From 764ec513eecbebd12781bcc96ce81ed5e736ee92 Mon Sep 17 00:00:00 2001 From: Dan Sinclair Date: Mon, 14 Mar 2016 13:35:12 -0400 Subject: Move core/src/ up to core/. This CL moves the core/src/ files up to core/ and fixes up the include guards, includes and build files. R=tsepez@chromium.org Review URL: https://codereview.chromium.org/1800523005 . --- core/fpdfapi/fpdf_render/fpdf_render.cpp | 1337 ++++++++++++++++ core/fpdfapi/fpdf_render/fpdf_render_cache.cpp | 334 ++++ core/fpdfapi/fpdf_render/fpdf_render_image.cpp | 998 ++++++++++++ core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp | 1654 ++++++++++++++++++++ .../fpdf_render_loadimage_embeddertest.cpp | 29 + core/fpdfapi/fpdf_render/fpdf_render_pattern.cpp | 1207 ++++++++++++++ .../fpdf_render_pattern_embeddertest.cpp | 17 + core/fpdfapi/fpdf_render/fpdf_render_text.cpp | 787 ++++++++++ core/fpdfapi/fpdf_render/render_int.h | 619 ++++++++ 9 files changed, 6982 insertions(+) create mode 100644 core/fpdfapi/fpdf_render/fpdf_render.cpp create mode 100644 core/fpdfapi/fpdf_render/fpdf_render_cache.cpp create mode 100644 core/fpdfapi/fpdf_render/fpdf_render_image.cpp create mode 100644 core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp create mode 100644 core/fpdfapi/fpdf_render/fpdf_render_loadimage_embeddertest.cpp create mode 100644 core/fpdfapi/fpdf_render/fpdf_render_pattern.cpp create mode 100644 core/fpdfapi/fpdf_render/fpdf_render_pattern_embeddertest.cpp create mode 100644 core/fpdfapi/fpdf_render/fpdf_render_text.cpp create mode 100644 core/fpdfapi/fpdf_render/render_int.h (limited to 'core/fpdfapi/fpdf_render') diff --git a/core/fpdfapi/fpdf_render/fpdf_render.cpp b/core/fpdfapi/fpdf_render/fpdf_render.cpp new file mode 100644 index 0000000000..2b82ed4cc6 --- /dev/null +++ b/core/fpdfapi/fpdf_render/fpdf_render.cpp @@ -0,0 +1,1337 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "core/fpdfapi/fpdf_render/render_int.h" + +#include "core/fpdfapi/fpdf_page/pageint.h" +#include "core/include/fpdfapi/cpdf_array.h" +#include "core/include/fpdfapi/cpdf_dictionary.h" +#include "core/include/fpdfapi/cpdf_document.h" +#include "core/include/fpdfapi/fpdf_module.h" +#include "core/include/fpdfapi/fpdf_render.h" +#include "core/include/fxge/fx_ge.h" + +CPDF_DocRenderData::CPDF_DocRenderData(CPDF_Document* pPDFDoc) + : m_pPDFDoc(pPDFDoc), m_pFontCache(new CFX_FontCache) {} + +CPDF_DocRenderData::~CPDF_DocRenderData() { + Clear(TRUE); +} + +void CPDF_DocRenderData::Clear(FX_BOOL bRelease) { + for (auto it = m_Type3FaceMap.begin(); it != m_Type3FaceMap.end();) { + auto curr_it = it++; + CPDF_CountedObject* cache = curr_it->second; + if (bRelease || cache->use_count() < 2) { + delete cache->get(); + delete cache; + m_Type3FaceMap.erase(curr_it); + } + } + + for (auto it = m_TransferFuncMap.begin(); it != m_TransferFuncMap.end();) { + auto curr_it = it++; + CPDF_CountedObject* value = curr_it->second; + if (bRelease || value->use_count() < 2) { + delete value->get(); + delete value; + m_TransferFuncMap.erase(curr_it); + } + } + + if (m_pFontCache) { + if (bRelease) { + delete m_pFontCache; + m_pFontCache = NULL; + } else { + m_pFontCache->FreeCache(FALSE); + } + } +} + +CPDF_Type3Cache* CPDF_DocRenderData::GetCachedType3(CPDF_Type3Font* pFont) { + CPDF_CountedObject* pCache; + auto it = m_Type3FaceMap.find(pFont); + if (it == m_Type3FaceMap.end()) { + CPDF_Type3Cache* pType3 = new CPDF_Type3Cache(pFont); + pCache = new CPDF_CountedObject(pType3); + m_Type3FaceMap[pFont] = pCache; + } else { + pCache = it->second; + } + return pCache->AddRef(); +} + +void CPDF_DocRenderData::ReleaseCachedType3(CPDF_Type3Font* pFont) { + auto it = m_Type3FaceMap.find(pFont); + if (it != m_Type3FaceMap.end()) + it->second->RemoveRef(); +} + +class CPDF_RenderModule : public IPDF_RenderModule { + public: + CPDF_RenderModule() {} + + private: + ~CPDF_RenderModule() override {} + + CPDF_DocRenderData* CreateDocData(CPDF_Document* pDoc) override; + void DestroyDocData(CPDF_DocRenderData* p) override; + void ClearDocData(CPDF_DocRenderData* p) override; + + CPDF_DocRenderData* GetRenderData() override { return &m_RenderData; } + + CPDF_PageRenderCache* CreatePageCache(CPDF_Page* pPage) override { + return new CPDF_PageRenderCache(pPage); + } + + void DestroyPageCache(CPDF_PageRenderCache* pCache) override; + + CPDF_DocRenderData m_RenderData; +}; + +CPDF_DocRenderData* CPDF_RenderModule::CreateDocData(CPDF_Document* pDoc) { + return new CPDF_DocRenderData(pDoc); +} +void CPDF_RenderModule::DestroyDocData(CPDF_DocRenderData* pDocData) { + delete pDocData; +} +void CPDF_RenderModule::ClearDocData(CPDF_DocRenderData* p) { + if (p) { + p->Clear(FALSE); + } +} +void CPDF_RenderModule::DestroyPageCache(CPDF_PageRenderCache* pCache) { + delete pCache; +} + +void CPDF_ModuleMgr::InitRenderModule() { + m_pRenderModule.reset(new CPDF_RenderModule); +} + +CPDF_RenderOptions::CPDF_RenderOptions() + : m_ColorMode(RENDER_COLOR_NORMAL), + m_Flags(RENDER_CLEARTYPE), + m_Interpolation(0), + m_AddFlags(0), + m_pOCContext(NULL), + m_dwLimitCacheSize(1024 * 1024 * 100), + m_HalftoneLimit(-1) {} +FX_ARGB CPDF_RenderOptions::TranslateColor(FX_ARGB argb) const { + if (m_ColorMode == RENDER_COLOR_NORMAL) { + return argb; + } + if (m_ColorMode == RENDER_COLOR_ALPHA) { + return argb; + } + int a, r, g, b; + ArgbDecode(argb, a, r, g, b); + int gray = FXRGB2GRAY(r, g, b); + if (m_ColorMode == RENDER_COLOR_TWOCOLOR) { + int color = (r - gray) * (r - gray) + (g - gray) * (g - gray) + + (b - gray) * (b - gray); + if (gray < 35 && color < 20) { + return ArgbEncode(a, m_ForeColor); + } + if (gray > 221 && color < 20) { + return ArgbEncode(a, m_BackColor); + } + return argb; + } + int fr = FXSYS_GetRValue(m_ForeColor); + int fg = FXSYS_GetGValue(m_ForeColor); + int fb = FXSYS_GetBValue(m_ForeColor); + int br = FXSYS_GetRValue(m_BackColor); + int bg = FXSYS_GetGValue(m_BackColor); + int bb = FXSYS_GetBValue(m_BackColor); + r = (br - fr) * gray / 255 + fr; + g = (bg - fg) * gray / 255 + fg; + b = (bb - fb) * gray / 255 + fb; + return ArgbEncode(a, r, g, b); +} + +// static +int CPDF_RenderStatus::s_CurrentRecursionDepth = 0; + +CPDF_RenderStatus::CPDF_RenderStatus() + : m_pFormResource(nullptr), + m_pPageResource(nullptr), + m_pContext(nullptr), + m_bStopped(FALSE), + m_pDevice(nullptr), + m_pCurObj(nullptr), + m_pStopObj(nullptr), + m_HalftoneLimit(0), + m_bPrint(FALSE), + m_Transparency(0), + m_DitherBits(0), + m_bDropObjects(FALSE), + m_bStdCS(FALSE), + m_GroupFamily(0), + m_bLoadMask(FALSE), + m_pType3Char(nullptr), + m_T3FillColor(0), + m_curBlend(FXDIB_BLEND_NORMAL) {} + +CPDF_RenderStatus::~CPDF_RenderStatus() {} + +FX_BOOL CPDF_RenderStatus::Initialize(CPDF_RenderContext* pContext, + CFX_RenderDevice* pDevice, + const CFX_Matrix* pDeviceMatrix, + const CPDF_PageObject* pStopObj, + const CPDF_RenderStatus* pParentState, + const CPDF_GraphicStates* pInitialStates, + const CPDF_RenderOptions* pOptions, + int transparency, + FX_BOOL bDropObjects, + CPDF_Dictionary* pFormResource, + FX_BOOL bStdCS, + CPDF_Type3Char* pType3Char, + FX_ARGB fill_color, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask) { + m_pContext = pContext; + m_pDevice = pDevice; + m_DitherBits = pDevice->GetDeviceCaps(FXDC_DITHER_BITS); + m_bPrint = m_pDevice->GetDeviceClass() != FXDC_DISPLAY; + if (pDeviceMatrix) { + m_DeviceMatrix = *pDeviceMatrix; + } + m_pStopObj = pStopObj; + if (pOptions) { + m_Options = *pOptions; + } + m_bDropObjects = bDropObjects; + m_bStdCS = bStdCS; + m_T3FillColor = fill_color; + m_pType3Char = pType3Char; + m_GroupFamily = GroupFamily; + m_bLoadMask = bLoadMask; + m_pFormResource = pFormResource; + m_pPageResource = m_pContext->GetPageResources(); + if (pInitialStates && !m_pType3Char) { + m_InitialStates.CopyStates(*pInitialStates); + if (pParentState) { + CPDF_ColorStateData* pColorData = + (CPDF_ColorStateData*)(const CPDF_ColorStateData*) + m_InitialStates.m_ColorState; + CPDF_ColorStateData* pParentData = + (CPDF_ColorStateData*)(const CPDF_ColorStateData*) + pParentState->m_InitialStates.m_ColorState; + if (!pColorData || pColorData->m_FillColor.IsNull()) { + CPDF_ColorStateData* pData = m_InitialStates.m_ColorState.GetModify(); + pData->m_FillRGB = pParentData->m_FillRGB; + pData->m_FillColor.Copy(&pParentData->m_FillColor); + } + if (!pColorData || pColorData->m_StrokeColor.IsNull()) { + CPDF_ColorStateData* pData = m_InitialStates.m_ColorState.GetModify(); + pData->m_StrokeRGB = pParentData->m_FillRGB; + pData->m_StrokeColor.Copy(&pParentData->m_StrokeColor); + } + } + } else { + m_InitialStates.DefaultStates(); + } + m_pObjectRenderer.reset(); + m_Transparency = transparency; + return TRUE; +} +void CPDF_RenderStatus::RenderObjectList( + const CPDF_PageObjectHolder* pObjectHolder, + const CFX_Matrix* pObj2Device) { + CFX_FloatRect clip_rect(m_pDevice->GetClipBox()); + CFX_Matrix device2object; + device2object.SetReverse(*pObj2Device); + device2object.TransformRect(clip_rect); + + for (const auto& pCurObj : *pObjectHolder->GetPageObjectList()) { + if (pCurObj.get() == m_pStopObj) { + m_bStopped = TRUE; + return; + } + if (!pCurObj) + continue; + + if (pCurObj->m_Left > clip_rect.right || + pCurObj->m_Right < clip_rect.left || + pCurObj->m_Bottom > clip_rect.top || + pCurObj->m_Top < clip_rect.bottom) { + continue; + } + RenderSingleObject(pCurObj.get(), pObj2Device); + if (m_bStopped) + return; + } +} +void CPDF_RenderStatus::RenderSingleObject(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device) { + CFX_AutoRestorer restorer(&s_CurrentRecursionDepth); + if (++s_CurrentRecursionDepth > kRenderMaxRecursionDepth) { + return; + } + m_pCurObj = pObj; + if (m_Options.m_pOCContext && pObj->m_ContentMark.NotNull()) { + if (!m_Options.m_pOCContext->CheckObjectVisible(pObj)) { + return; + } + } + ProcessClipPath(pObj->m_ClipPath, pObj2Device); + if (ProcessTransparency(pObj, pObj2Device)) { + return; + } + ProcessObjectNoClip(pObj, pObj2Device); +} + +FX_BOOL CPDF_RenderStatus::ContinueSingleObject(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device, + IFX_Pause* pPause) { + if (m_pObjectRenderer) { + if (m_pObjectRenderer->Continue(pPause)) + return TRUE; + + if (!m_pObjectRenderer->m_Result) + DrawObjWithBackground(pObj, pObj2Device); + m_pObjectRenderer.reset(); + return FALSE; + } + + m_pCurObj = pObj; + if (m_Options.m_pOCContext && pObj->m_ContentMark.NotNull() && + !m_Options.m_pOCContext->CheckObjectVisible(pObj)) { + return FALSE; + } + + ProcessClipPath(pObj->m_ClipPath, pObj2Device); + if (ProcessTransparency(pObj, pObj2Device)) + return FALSE; + + if (pObj->IsImage()) { + m_pObjectRenderer.reset(IPDF_ObjectRenderer::Create()); + if (!m_pObjectRenderer->Start(this, pObj, pObj2Device, FALSE)) { + if (!m_pObjectRenderer->m_Result) + DrawObjWithBackground(pObj, pObj2Device); + m_pObjectRenderer.reset(); + return FALSE; + } + return ContinueSingleObject(pObj, pObj2Device, pPause); + } + + ProcessObjectNoClip(pObj, pObj2Device); + return FALSE; +} + +IPDF_ObjectRenderer* IPDF_ObjectRenderer::Create() { + return new CPDF_ImageRenderer; +} + +FX_BOOL CPDF_RenderStatus::GetObjectClippedRect(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bLogical, + FX_RECT& rect) const { + rect = pObj->GetBBox(pObj2Device); + FX_RECT rtClip = m_pDevice->GetClipBox(); + if (!bLogical) { + CFX_Matrix dCTM = m_pDevice->GetCTM(); + FX_FLOAT a = FXSYS_fabs(dCTM.a); + FX_FLOAT d = FXSYS_fabs(dCTM.d); + if (a != 1.0f || d != 1.0f) { + rect.right = rect.left + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Width() * a); + rect.bottom = rect.top + (int32_t)FXSYS_ceil((FX_FLOAT)rect.Height() * d); + rtClip.right = + rtClip.left + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Width() * a); + rtClip.bottom = + rtClip.top + (int32_t)FXSYS_ceil((FX_FLOAT)rtClip.Height() * d); + } + } + rect.Intersect(rtClip); + return rect.IsEmpty(); +} +void CPDF_RenderStatus::DitherObjectArea(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device) { + CFX_DIBitmap* pBitmap = m_pDevice->GetBitmap(); + if (!pBitmap) { + return; + } + FX_RECT rect; + if (GetObjectClippedRect(pObj, pObj2Device, FALSE, rect)) { + return; + } + if (m_DitherBits == 2) { + static FX_ARGB pal[4] = {0, 85, 170, 255}; + pBitmap->DitherFS(pal, 4, &rect); + } else if (m_DitherBits == 3) { + static FX_ARGB pal[8] = {0, 36, 73, 109, 146, 182, 219, 255}; + pBitmap->DitherFS(pal, 8, &rect); + } else if (m_DitherBits == 4) { + static FX_ARGB pal[16] = {0, 17, 34, 51, 68, 85, 102, 119, + 136, 153, 170, 187, 204, 221, 238, 255}; + pBitmap->DitherFS(pal, 16, &rect); + } +} +void CPDF_RenderStatus::ProcessObjectNoClip(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device) { + FX_BOOL bRet = FALSE; + switch (pObj->GetType()) { + case CPDF_PageObject::TEXT: + bRet = ProcessText(pObj->AsText(), pObj2Device, NULL); + break; + case CPDF_PageObject::PATH: + bRet = ProcessPath(pObj->AsPath(), pObj2Device); + break; + case CPDF_PageObject::IMAGE: + bRet = ProcessImage(pObj->AsImage(), pObj2Device); + break; + case CPDF_PageObject::SHADING: + bRet = ProcessShading(pObj->AsShading(), pObj2Device); + break; + case CPDF_PageObject::FORM: + bRet = ProcessForm(pObj->AsForm(), pObj2Device); + break; + } + if (!bRet) { + DrawObjWithBackground(pObj, pObj2Device); + } +} +FX_BOOL CPDF_RenderStatus::DrawObjWithBlend(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device) { + FX_BOOL bRet = FALSE; + switch (pObj->GetType()) { + case CPDF_PageObject::PATH: + bRet = ProcessPath(pObj->AsPath(), pObj2Device); + break; + case CPDF_PageObject::IMAGE: + bRet = ProcessImage(pObj->AsImage(), pObj2Device); + break; + case CPDF_PageObject::FORM: + bRet = ProcessForm(pObj->AsForm(), pObj2Device); + break; + default: + break; + } + return bRet; +} +void CPDF_RenderStatus::GetScaledMatrix(CFX_Matrix& matrix) const { + CFX_Matrix dCTM = m_pDevice->GetCTM(); + matrix.a *= FXSYS_fabs(dCTM.a); + matrix.d *= FXSYS_fabs(dCTM.d); +} +void CPDF_RenderStatus::DrawObjWithBackground(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device) { + FX_RECT rect; + if (GetObjectClippedRect(pObj, pObj2Device, FALSE, rect)) { + return; + } + int res = 300; + if (pObj->IsImage() && + m_pDevice->GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) { + res = 0; + } + CPDF_ScaledRenderBuffer buffer; + if (!buffer.Initialize(m_pContext, m_pDevice, rect, pObj, &m_Options, res)) { + return; + } + CFX_Matrix matrix = *pObj2Device; + matrix.Concat(*buffer.GetMatrix()); + GetScaledMatrix(matrix); + CPDF_Dictionary* pFormResource = NULL; + if (pObj->IsForm()) { + const CPDF_FormObject* pFormObj = pObj->AsForm(); + if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) { + pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictBy("Resources"); + } + } + CPDF_RenderStatus status; + status.Initialize(m_pContext, buffer.GetDevice(), buffer.GetMatrix(), NULL, + NULL, NULL, &m_Options, m_Transparency, m_bDropObjects, + pFormResource); + status.RenderSingleObject(pObj, &matrix); + buffer.OutputToDevice(); +} +FX_BOOL CPDF_RenderStatus::ProcessForm(const CPDF_FormObject* pFormObj, + const CFX_Matrix* pObj2Device) { + CPDF_Dictionary* pOC = pFormObj->m_pForm->m_pFormDict->GetDictBy("OC"); + if (pOC && m_Options.m_pOCContext && + !m_Options.m_pOCContext->CheckOCGVisible(pOC)) { + return TRUE; + } + CFX_Matrix matrix = pFormObj->m_FormMatrix; + matrix.Concat(*pObj2Device); + CPDF_Dictionary* pResources = NULL; + if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) { + pResources = pFormObj->m_pForm->m_pFormDict->GetDictBy("Resources"); + } + CPDF_RenderStatus status; + status.Initialize(m_pContext, m_pDevice, NULL, m_pStopObj, this, pFormObj, + &m_Options, m_Transparency, m_bDropObjects, pResources, + FALSE); + status.m_curBlend = m_curBlend; + m_pDevice->SaveState(); + status.RenderObjectList(pFormObj->m_pForm, &matrix); + m_bStopped = status.m_bStopped; + m_pDevice->RestoreState(); + return TRUE; +} +FX_BOOL IsAvailableMatrix(const CFX_Matrix& matrix) { + if (matrix.a == 0 || matrix.d == 0) { + return matrix.b != 0 && matrix.c != 0; + } + if (matrix.b == 0 || matrix.c == 0) { + return matrix.a != 0 && matrix.d != 0; + } + return TRUE; +} +FX_BOOL CPDF_RenderStatus::ProcessPath(const CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device) { + int FillType = pPathObj->m_FillType; + FX_BOOL bStroke = pPathObj->m_bStroke; + ProcessPathPattern(pPathObj, pObj2Device, FillType, bStroke); + if (FillType == 0 && !bStroke) { + return TRUE; + } + FX_DWORD fill_argb = 0; + if (FillType) { + fill_argb = GetFillArgb(pPathObj); + } + FX_DWORD stroke_argb = 0; + if (bStroke) { + stroke_argb = GetStrokeArgb(pPathObj); + } + CFX_Matrix path_matrix = pPathObj->m_Matrix; + path_matrix.Concat(*pObj2Device); + if (!IsAvailableMatrix(path_matrix)) { + return TRUE; + } + if (FillType && (m_Options.m_Flags & RENDER_RECT_AA)) { + FillType |= FXFILL_RECT_AA; + } + if (m_Options.m_Flags & RENDER_FILL_FULLCOVER) { + FillType |= FXFILL_FULLCOVER; + } + if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) { + FillType |= FXFILL_NOPATHSMOOTH; + } + if (bStroke) { + FillType |= FX_FILL_STROKE; + } + const CPDF_GeneralStateData* pGeneralData = + ((CPDF_PageObject*)pPathObj)->m_GeneralState; + if (pGeneralData && pGeneralData->m_StrokeAdjust) { + FillType |= FX_STROKE_ADJUST; + } + if (m_pType3Char) { + FillType |= FX_FILL_TEXT_MODE; + } + CFX_GraphStateData graphState(*pPathObj->m_GraphState); + if (m_Options.m_Flags & RENDER_THINLINE) { + graphState.m_LineWidth = 0; + } + return m_pDevice->DrawPath(pPathObj->m_Path, &path_matrix, &graphState, + fill_argb, stroke_argb, FillType, 0, NULL, + m_curBlend); +} +CPDF_TransferFunc* CPDF_RenderStatus::GetTransferFunc(CPDF_Object* pObj) const { + ASSERT(pObj); + CPDF_DocRenderData* pDocCache = m_pContext->GetDocument()->GetRenderData(); + return pDocCache ? pDocCache->GetTransferFunc(pObj) : nullptr; +} +FX_ARGB CPDF_RenderStatus::GetFillArgb(const CPDF_PageObject* pObj, + FX_BOOL bType3) const { + CPDF_ColorStateData* pColorData = + (CPDF_ColorStateData*)(const CPDF_ColorStateData*)pObj->m_ColorState; + if (m_pType3Char && !bType3 && + (!m_pType3Char->m_bColored || + (m_pType3Char->m_bColored && + (!pColorData || pColorData->m_FillColor.IsNull())))) { + return m_T3FillColor; + } + if (!pColorData || pColorData->m_FillColor.IsNull()) { + pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*) + m_InitialStates.m_ColorState; + } + FX_COLORREF rgb = pColorData->m_FillRGB; + if (rgb == (FX_DWORD)-1) { + return 0; + } + const CPDF_GeneralStateData* pGeneralData = pObj->m_GeneralState; + int alpha; + if (pGeneralData) { + alpha = (int32_t)(pGeneralData->m_FillAlpha * 255); + if (pGeneralData->m_pTR) { + if (!pGeneralData->m_pTransferFunc) { + ((CPDF_GeneralStateData*)pGeneralData)->m_pTransferFunc = + GetTransferFunc(pGeneralData->m_pTR); + } + if (pGeneralData->m_pTransferFunc) { + rgb = pGeneralData->m_pTransferFunc->TranslateColor(rgb); + } + } + } else { + alpha = 255; + } + return m_Options.TranslateColor(ArgbEncode(alpha, rgb)); +} +FX_ARGB CPDF_RenderStatus::GetStrokeArgb(const CPDF_PageObject* pObj) const { + CPDF_ColorStateData* pColorData = + (CPDF_ColorStateData*)(const CPDF_ColorStateData*)pObj->m_ColorState; + if (m_pType3Char && (!m_pType3Char->m_bColored || + (m_pType3Char->m_bColored && + (!pColorData || pColorData->m_StrokeColor.IsNull())))) { + return m_T3FillColor; + } + if (!pColorData || pColorData->m_StrokeColor.IsNull()) { + pColorData = (CPDF_ColorStateData*)(const CPDF_ColorStateData*) + m_InitialStates.m_ColorState; + } + FX_COLORREF rgb = pColorData->m_StrokeRGB; + if (rgb == (FX_DWORD)-1) { + return 0; + } + const CPDF_GeneralStateData* pGeneralData = pObj->m_GeneralState; + int alpha; + if (pGeneralData) { + alpha = (int32_t)(pGeneralData->m_StrokeAlpha * 255); + if (pGeneralData->m_pTR) { + if (!pGeneralData->m_pTransferFunc) { + ((CPDF_GeneralStateData*)pGeneralData)->m_pTransferFunc = + GetTransferFunc(pGeneralData->m_pTR); + } + if (pGeneralData->m_pTransferFunc) { + rgb = pGeneralData->m_pTransferFunc->TranslateColor(rgb); + } + } + } else { + alpha = 255; + } + return m_Options.TranslateColor(ArgbEncode(alpha, rgb)); +} +void CPDF_RenderStatus::ProcessClipPath(CPDF_ClipPath ClipPath, + const CFX_Matrix* pObj2Device) { + if (ClipPath.IsNull()) { + if (!m_LastClipPath.IsNull()) { + m_pDevice->RestoreState(TRUE); + m_LastClipPath.SetNull(); + } + return; + } + if (m_LastClipPath == ClipPath) + return; + + m_LastClipPath = ClipPath; + m_pDevice->RestoreState(TRUE); + int nClipPath = ClipPath.GetPathCount(); + for (int i = 0; i < nClipPath; ++i) { + const CFX_PathData* pPathData = ClipPath.GetPath(i); + if (!pPathData) + continue; + + if (pPathData->GetPointCount() == 0) { + CFX_PathData EmptyPath; + EmptyPath.AppendRect(-1, -1, 0, 0); + int fill_mode = FXFILL_WINDING; + m_pDevice->SetClip_PathFill(&EmptyPath, nullptr, fill_mode); + } else { + int ClipType = ClipPath.GetClipType(i); + m_pDevice->SetClip_PathFill(pPathData, pObj2Device, ClipType); + } + } + int textcount = ClipPath.GetTextCount(); + if (textcount == 0) + return; + + if (m_pDevice->GetDeviceClass() == FXDC_DISPLAY && + !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) { + return; + } + + std::unique_ptr pTextClippingPath; + for (int i = 0; i < textcount; ++i) { + CPDF_TextObject* pText = ClipPath.GetText(i); + if (pText) { + if (!pTextClippingPath) + pTextClippingPath.reset(new CFX_PathData); + ProcessText(pText, pObj2Device, pTextClippingPath.get()); + continue; + } + + if (!pTextClippingPath) + continue; + + int fill_mode = FXFILL_WINDING; + if (m_Options.m_Flags & RENDER_NOTEXTSMOOTH) + fill_mode |= FXFILL_NOPATHSMOOTH; + m_pDevice->SetClip_PathFill(pTextClippingPath.get(), nullptr, fill_mode); + pTextClippingPath.reset(); + } +} + +void CPDF_RenderStatus::DrawClipPath(CPDF_ClipPath ClipPath, + const CFX_Matrix* pObj2Device) { + if (ClipPath.IsNull()) { + return; + } + int fill_mode = 0; + if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) { + fill_mode |= FXFILL_NOPATHSMOOTH; + } + int nClipPath = ClipPath.GetPathCount(); + int i; + for (i = 0; i < nClipPath; i++) { + const CFX_PathData* pPathData = ClipPath.GetPath(i); + if (!pPathData) { + continue; + } + CFX_GraphStateData stroke_state; + if (m_Options.m_Flags & RENDER_THINLINE) { + stroke_state.m_LineWidth = 0; + } + m_pDevice->DrawPath(pPathData, pObj2Device, &stroke_state, 0, 0xffff0000, + fill_mode); + } +} +FX_BOOL CPDF_RenderStatus::SelectClipPath(const CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bStroke) { + CFX_Matrix path_matrix = pPathObj->m_Matrix; + path_matrix.Concat(*pObj2Device); + if (bStroke) { + CFX_GraphStateData graphState(*pPathObj->m_GraphState); + if (m_Options.m_Flags & RENDER_THINLINE) { + graphState.m_LineWidth = 0; + } + return m_pDevice->SetClip_PathStroke(pPathObj->m_Path, &path_matrix, + &graphState); + } + int fill_mode = pPathObj->m_FillType; + if (m_Options.m_Flags & RENDER_NOPATHSMOOTH) { + fill_mode |= FXFILL_NOPATHSMOOTH; + } + return m_pDevice->SetClip_PathFill(pPathObj->m_Path, &path_matrix, fill_mode); +} +FX_BOOL CPDF_RenderStatus::ProcessTransparency(const CPDF_PageObject* pPageObj, + const CFX_Matrix* pObj2Device) { + const CPDF_GeneralStateData* pGeneralState = pPageObj->m_GeneralState; + int blend_type = + pGeneralState ? pGeneralState->m_BlendType : FXDIB_BLEND_NORMAL; + if (blend_type == FXDIB_BLEND_UNSUPPORTED) { + return TRUE; + } + CPDF_Dictionary* pSMaskDict = + pGeneralState ? ToDictionary(pGeneralState->m_pSoftMask) : NULL; + if (pSMaskDict) { + if (pPageObj->IsImage() && + pPageObj->AsImage()->m_pImage->GetDict()->KeyExist("SMask")) { + pSMaskDict = NULL; + } + } + CPDF_Dictionary* pFormResource = NULL; + FX_FLOAT group_alpha = 1.0f; + int Transparency = m_Transparency; + FX_BOOL bGroupTransparent = FALSE; + if (pPageObj->IsForm()) { + const CPDF_FormObject* pFormObj = pPageObj->AsForm(); + const CPDF_GeneralStateData* pStateData = + pFormObj->m_GeneralState.GetObject(); + if (pStateData) { + group_alpha = pStateData->m_FillAlpha; + } + Transparency = pFormObj->m_pForm->m_Transparency; + bGroupTransparent = !!(Transparency & PDFTRANS_ISOLATED); + if (pFormObj->m_pForm->m_pFormDict) { + pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictBy("Resources"); + } + } + FX_BOOL bTextClip = FALSE; + if (pPageObj->m_ClipPath.NotNull() && pPageObj->m_ClipPath.GetTextCount() && + m_pDevice->GetDeviceClass() == FXDC_DISPLAY && + !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) { + bTextClip = TRUE; + } + if ((m_Options.m_Flags & RENDER_OVERPRINT) && pPageObj->IsImage() && + pGeneralState && pGeneralState->m_FillOP && pGeneralState->m_StrokeOP) { + CPDF_Document* pDocument = NULL; + CPDF_Page* pPage = NULL; + if (m_pContext->GetPageCache()) { + pPage = m_pContext->GetPageCache()->GetPage(); + pDocument = pPage->m_pDocument; + } else { + pDocument = pPageObj->AsImage()->m_pImage->GetDocument(); + } + CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL; + CPDF_Object* pCSObj = + pPageObj->AsImage()->m_pImage->GetStream()->GetDict()->GetElementValue( + "ColorSpace"); + CPDF_ColorSpace* pColorSpace = + pDocument->LoadColorSpace(pCSObj, pPageResources); + if (pColorSpace) { + int format = pColorSpace->GetFamily(); + if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION || + format == PDFCS_DEVICEN) { + blend_type = FXDIB_BLEND_DARKEN; + } + pDocument->GetPageData()->ReleaseColorSpace(pCSObj); + } + } + if (!pSMaskDict && group_alpha == 1.0f && blend_type == FXDIB_BLEND_NORMAL && + !bTextClip && !bGroupTransparent) { + return FALSE; + } + FX_BOOL isolated = Transparency & PDFTRANS_ISOLATED; + if (m_bPrint) { + FX_BOOL bRet = FALSE; + int rendCaps = m_pDevice->GetRenderCaps(); + if (!((Transparency & PDFTRANS_ISOLATED) || pSMaskDict || bTextClip) && + (rendCaps & FXRC_BLEND_MODE)) { + int oldBlend = m_curBlend; + m_curBlend = blend_type; + bRet = DrawObjWithBlend(pPageObj, pObj2Device); + m_curBlend = oldBlend; + } + if (!bRet) { + DrawObjWithBackground(pPageObj, pObj2Device); + } + return TRUE; + } + FX_RECT rect = pPageObj->GetBBox(pObj2Device); + rect.Intersect(m_pDevice->GetClipBox()); + if (rect.IsEmpty()) { + return TRUE; + } + CFX_Matrix deviceCTM = m_pDevice->GetCTM(); + FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a); + FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d); + int width = FXSYS_round((FX_FLOAT)rect.Width() * scaleX); + int height = FXSYS_round((FX_FLOAT)rect.Height() * scaleY); + CFX_FxgeDevice bitmap_device; + std::unique_ptr oriDevice; + if (!isolated && (m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) { + oriDevice.reset(new CFX_DIBitmap); + if (!m_pDevice->CreateCompatibleBitmap(oriDevice.get(), width, height)) + return TRUE; + + m_pDevice->GetDIBits(oriDevice.get(), rect.left, rect.top); + } + if (!bitmap_device.Create(width, height, FXDIB_Argb, 0, oriDevice.get())) + return TRUE; + + CFX_DIBitmap* bitmap = bitmap_device.GetBitmap(); + bitmap->Clear(0); + CFX_Matrix new_matrix = *pObj2Device; + new_matrix.TranslateI(-rect.left, -rect.top); + new_matrix.Scale(scaleX, scaleY); + std::unique_ptr pTextMask; + if (bTextClip) { + pTextMask.reset(new CFX_DIBitmap); + if (!pTextMask->Create(width, height, FXDIB_8bppMask)) + return TRUE; + + pTextMask->Clear(0); + CFX_FxgeDevice text_device; + text_device.Attach(pTextMask.get()); + for (FX_DWORD i = 0; i < pPageObj->m_ClipPath.GetTextCount(); i++) { + CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i); + if (!textobj) { + break; + } + CFX_Matrix text_matrix; + textobj->GetTextMatrix(&text_matrix); + CPDF_TextRenderer::DrawTextPath( + &text_device, textobj->m_nChars, textobj->m_pCharCodes, + textobj->m_pCharPos, textobj->m_TextState.GetFont(), + textobj->m_TextState.GetFontSize(), &text_matrix, &new_matrix, + textobj->m_GraphState, (FX_ARGB)-1, 0, NULL); + } + } + CPDF_RenderStatus bitmap_render; + bitmap_render.Initialize(m_pContext, &bitmap_device, NULL, m_pStopObj, NULL, + NULL, &m_Options, 0, m_bDropObjects, pFormResource, + TRUE); + bitmap_render.ProcessObjectNoClip(pPageObj, &new_matrix); + m_bStopped = bitmap_render.m_bStopped; + if (pSMaskDict) { + CFX_Matrix smask_matrix; + FXSYS_memcpy(&smask_matrix, pGeneralState->m_SMaskMatrix, + sizeof smask_matrix); + smask_matrix.Concat(*pObj2Device); + std::unique_ptr pSMaskSource( + LoadSMask(pSMaskDict, &rect, &smask_matrix)); + if (pSMaskSource) + bitmap->MultiplyAlpha(pSMaskSource.get()); + } + if (pTextMask) { + bitmap->MultiplyAlpha(pTextMask.get()); + pTextMask.reset(); + } + if (Transparency & PDFTRANS_GROUP && group_alpha != 1.0f) { + bitmap->MultiplyAlpha((int32_t)(group_alpha * 255)); + } + Transparency = m_Transparency; + if (pPageObj->IsForm()) { + Transparency |= PDFTRANS_GROUP; + } + CompositeDIBitmap(bitmap, rect.left, rect.top, 0, 255, blend_type, + Transparency); + return TRUE; +} + +CFX_DIBitmap* CPDF_RenderStatus::GetBackdrop(const CPDF_PageObject* pObj, + const FX_RECT& rect, + int& left, + int& top, + FX_BOOL bBackAlphaRequired) { + FX_RECT bbox = rect; + bbox.Intersect(m_pDevice->GetClipBox()); + left = bbox.left; + top = bbox.top; + CFX_Matrix deviceCTM = m_pDevice->GetCTM(); + FX_FLOAT scaleX = FXSYS_fabs(deviceCTM.a); + FX_FLOAT scaleY = FXSYS_fabs(deviceCTM.d); + int width = FXSYS_round(bbox.Width() * scaleX); + int height = FXSYS_round(bbox.Height() * scaleY); + std::unique_ptr pBackdrop(new CFX_DIBitmap); + if (bBackAlphaRequired && !m_bDropObjects) + pBackdrop->Create(width, height, FXDIB_Argb); + else + m_pDevice->CreateCompatibleBitmap(pBackdrop.get(), width, height); + + if (!pBackdrop->GetBuffer()) + return nullptr; + + FX_BOOL bNeedDraw; + if (pBackdrop->HasAlpha()) + bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT); + else + bNeedDraw = !(m_pDevice->GetRenderCaps() & FXRC_GET_BITS); + + if (!bNeedDraw) { + m_pDevice->GetDIBits(pBackdrop.get(), left, top); + return pBackdrop.release(); + } + + CFX_Matrix FinalMatrix = m_DeviceMatrix; + FinalMatrix.TranslateI(-left, -top); + FinalMatrix.Scale(scaleX, scaleY); + pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff); + CFX_FxgeDevice device; + device.Attach(pBackdrop.get()); + m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix); + return pBackdrop.release(); +} + +void CPDF_RenderContext::GetBackground(CFX_DIBitmap* pBuffer, + const CPDF_PageObject* pObj, + const CPDF_RenderOptions* pOptions, + CFX_Matrix* pFinalMatrix) { + CFX_FxgeDevice device; + device.Attach(pBuffer); + + FX_RECT rect(0, 0, device.GetWidth(), device.GetHeight()); + device.FillRect(&rect, 0xffffffff); + Render(&device, pObj, pOptions, pFinalMatrix); +} +CPDF_GraphicStates* CPDF_RenderStatus::CloneObjStates( + const CPDF_GraphicStates* pSrcStates, + FX_BOOL bStroke) { + if (!pSrcStates) { + return NULL; + } + CPDF_GraphicStates* pStates = new CPDF_GraphicStates; + pStates->CopyStates(*pSrcStates); + CPDF_Color* pObjColor = bStroke ? pSrcStates->m_ColorState.GetStrokeColor() + : pSrcStates->m_ColorState.GetFillColor(); + if (!pObjColor->IsNull()) { + CPDF_ColorStateData* pColorData = pStates->m_ColorState.GetModify(); + pColorData->m_FillRGB = + bStroke ? pSrcStates->m_ColorState.GetObject()->m_StrokeRGB + : pSrcStates->m_ColorState.GetObject()->m_FillRGB; + pColorData->m_StrokeRGB = pColorData->m_FillRGB; + } + return pStates; +} + +CPDF_RenderContext::CPDF_RenderContext(CPDF_Page* pPage) + : m_pDocument(pPage->m_pDocument), + m_pPageResources(pPage->m_pPageResources), + m_pPageCache(pPage->GetRenderCache()), + m_bFirstLayer(TRUE) {} + +CPDF_RenderContext::CPDF_RenderContext(CPDF_Document* pDoc, + CPDF_PageRenderCache* pPageCache) + : m_pDocument(pDoc), + m_pPageResources(nullptr), + m_pPageCache(pPageCache), + m_bFirstLayer(TRUE) {} + +CPDF_RenderContext::~CPDF_RenderContext() {} + +void CPDF_RenderContext::AppendLayer(CPDF_PageObjectHolder* pObjectHolder, + const CFX_Matrix* pObject2Device) { + Layer* pLayer = m_Layers.AddSpace(); + pLayer->m_pObjectHolder = pObjectHolder; + if (pObject2Device) { + pLayer->m_Matrix = *pObject2Device; + } else { + pLayer->m_Matrix.SetIdentity(); + } +} +void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice, + const CPDF_RenderOptions* pOptions, + const CFX_Matrix* pLastMatrix) { + Render(pDevice, NULL, pOptions, pLastMatrix); +} +void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice, + const CPDF_PageObject* pStopObj, + const CPDF_RenderOptions* pOptions, + const CFX_Matrix* pLastMatrix) { + int count = m_Layers.GetSize(); + for (int j = 0; j < count; j++) { + pDevice->SaveState(); + Layer* pLayer = m_Layers.GetDataPtr(j); + if (pLastMatrix) { + CFX_Matrix FinalMatrix = pLayer->m_Matrix; + FinalMatrix.Concat(*pLastMatrix); + CPDF_RenderStatus status; + status.Initialize(this, pDevice, pLastMatrix, pStopObj, NULL, NULL, + pOptions, pLayer->m_pObjectHolder->m_Transparency, + FALSE, NULL); + status.RenderObjectList(pLayer->m_pObjectHolder, &FinalMatrix); + if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) { + m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize); + } + if (status.m_bStopped) { + pDevice->RestoreState(); + break; + } + } else { + CPDF_RenderStatus status; + status.Initialize(this, pDevice, NULL, pStopObj, NULL, NULL, pOptions, + pLayer->m_pObjectHolder->m_Transparency, FALSE, NULL); + status.RenderObjectList(pLayer->m_pObjectHolder, &pLayer->m_Matrix); + if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) { + m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize); + } + if (status.m_bStopped) { + pDevice->RestoreState(); + break; + } + } + pDevice->RestoreState(); + } +} + +CPDF_ProgressiveRenderer::CPDF_ProgressiveRenderer( + CPDF_RenderContext* pContext, + CFX_RenderDevice* pDevice, + const CPDF_RenderOptions* pOptions) + : m_Status(Ready), + m_pContext(pContext), + m_pDevice(pDevice), + m_pOptions(pOptions), + m_LayerIndex(0), + m_pCurrentLayer(nullptr) {} + +CPDF_ProgressiveRenderer::~CPDF_ProgressiveRenderer() { + if (m_pRenderStatus) + m_pDevice->RestoreState(); +} + +void CPDF_ProgressiveRenderer::Start(IFX_Pause* pPause) { + if (!m_pContext || !m_pDevice || m_Status != Ready) { + m_Status = Failed; + return; + } + m_Status = ToBeContinued; + Continue(pPause); +} + +void CPDF_ProgressiveRenderer::Continue(IFX_Pause* pPause) { + while (m_Status == ToBeContinued) { + if (!m_pCurrentLayer) { + if (m_LayerIndex >= m_pContext->CountLayers()) { + m_Status = Done; + return; + } + m_pCurrentLayer = m_pContext->GetLayer(m_LayerIndex); + m_LastObjectRendered = + m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->end(); + m_pRenderStatus.reset(new CPDF_RenderStatus()); + m_pRenderStatus->Initialize( + m_pContext, m_pDevice, NULL, NULL, NULL, NULL, m_pOptions, + m_pCurrentLayer->m_pObjectHolder->m_Transparency, FALSE, NULL); + m_pDevice->SaveState(); + m_ClipRect = CFX_FloatRect(m_pDevice->GetClipBox()); + CFX_Matrix device2object; + device2object.SetReverse(m_pCurrentLayer->m_Matrix); + device2object.TransformRect(m_ClipRect); + } + CPDF_PageObjectList::iterator iter; + CPDF_PageObjectList::iterator iterEnd = + m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->end(); + if (m_LastObjectRendered != iterEnd) { + iter = m_LastObjectRendered; + ++iter; + } else { + iter = m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->begin(); + } + int nObjsToGo = kStepLimit; + while (iter != iterEnd) { + CPDF_PageObject* pCurObj = iter->get(); + if (pCurObj && pCurObj->m_Left <= m_ClipRect.right && + pCurObj->m_Right >= m_ClipRect.left && + pCurObj->m_Bottom <= m_ClipRect.top && + pCurObj->m_Top >= m_ClipRect.bottom) { + if (m_pRenderStatus->ContinueSingleObject( + pCurObj, &m_pCurrentLayer->m_Matrix, pPause)) { + return; + } + if (pCurObj->IsImage() && + m_pRenderStatus->m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) { + m_pContext->GetPageCache()->CacheOptimization( + m_pRenderStatus->m_Options.m_dwLimitCacheSize); + } + if (pCurObj->IsForm() || pCurObj->IsShading()) { + nObjsToGo = 0; + } else { + --nObjsToGo; + } + } + m_LastObjectRendered = iter; + if (nObjsToGo == 0) { + if (pPause && pPause->NeedToPauseNow()) + return; + nObjsToGo = kStepLimit; + } + ++iter; + } + if (m_pCurrentLayer->m_pObjectHolder->IsParsed()) { + m_pRenderStatus.reset(); + m_pDevice->RestoreState(); + m_pCurrentLayer = nullptr; + m_LayerIndex++; + if (pPause && pPause->NeedToPauseNow()) { + return; + } + } else { + m_pCurrentLayer->m_pObjectHolder->ContinueParse(pPause); + if (!m_pCurrentLayer->m_pObjectHolder->IsParsed()) + return; + } + } +} + +CPDF_TransferFunc* CPDF_DocRenderData::GetTransferFunc(CPDF_Object* pObj) { + if (!pObj) + return nullptr; + + auto it = m_TransferFuncMap.find(pObj); + if (it != m_TransferFuncMap.end()) { + CPDF_CountedObject* pTransferCounter = it->second; + return pTransferCounter->AddRef(); + } + + std::unique_ptr pFuncs[3]; + FX_BOOL bUniTransfer = TRUE; + FX_BOOL bIdentity = TRUE; + if (CPDF_Array* pArray = pObj->AsArray()) { + bUniTransfer = FALSE; + if (pArray->GetCount() < 3) + return nullptr; + + for (FX_DWORD i = 0; i < 3; ++i) { + pFuncs[2 - i].reset(CPDF_Function::Load(pArray->GetElementValue(i))); + if (!pFuncs[2 - i]) + return nullptr; + } + } else { + pFuncs[0].reset(CPDF_Function::Load(pObj)); + if (!pFuncs[0]) + return nullptr; + } + CPDF_TransferFunc* pTransfer = new CPDF_TransferFunc(m_pPDFDoc); + CPDF_CountedObject* pTransferCounter = + new CPDF_CountedObject(pTransfer); + m_TransferFuncMap[pObj] = pTransferCounter; + static const int kMaxOutputs = 16; + FX_FLOAT output[kMaxOutputs]; + FXSYS_memset(output, 0, sizeof(output)); + FX_FLOAT input; + int noutput; + for (int v = 0; v < 256; ++v) { + input = (FX_FLOAT)v / 255.0f; + if (bUniTransfer) { + if (pFuncs[0] && pFuncs[0]->CountOutputs() <= kMaxOutputs) + pFuncs[0]->Call(&input, 1, output, noutput); + int o = FXSYS_round(output[0] * 255); + if (o != v) + bIdentity = FALSE; + for (int i = 0; i < 3; ++i) { + pTransfer->m_Samples[i * 256 + v] = o; + } + } else { + for (int i = 0; i < 3; ++i) { + if (pFuncs[i] && pFuncs[i]->CountOutputs() <= kMaxOutputs) { + pFuncs[i]->Call(&input, 1, output, noutput); + int o = FXSYS_round(output[0] * 255); + if (o != v) + bIdentity = FALSE; + pTransfer->m_Samples[i * 256 + v] = o; + } else { + pTransfer->m_Samples[i * 256 + v] = v; + } + } + } + } + + pTransfer->m_bIdentity = bIdentity; + return pTransferCounter->AddRef(); +} + +void CPDF_DocRenderData::ReleaseTransferFunc(CPDF_Object* pObj) { + auto it = m_TransferFuncMap.find(pObj); + if (it != m_TransferFuncMap.end()) + it->second->RemoveRef(); +} + +CPDF_DeviceBuffer::CPDF_DeviceBuffer() + : m_pDevice(nullptr), m_pContext(nullptr), m_pObject(nullptr) {} + +CPDF_DeviceBuffer::~CPDF_DeviceBuffer() {} + +FX_BOOL CPDF_DeviceBuffer::Initialize(CPDF_RenderContext* pContext, + CFX_RenderDevice* pDevice, + FX_RECT* pRect, + const CPDF_PageObject* pObj, + int max_dpi) { + m_pDevice = pDevice; + m_pContext = pContext; + m_Rect = *pRect; + m_pObject = pObj; + m_Matrix.TranslateI(-pRect->left, -pRect->top); +#if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_ + int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE); + int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE); + if (horz_size && vert_size && max_dpi) { + int dpih = + pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10); + int dpiv = + pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10); + if (dpih > max_dpi) { + m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f); + } + if (dpiv > max_dpi) { + m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv); + } + } +#endif + CFX_Matrix ctm = m_pDevice->GetCTM(); + FX_FLOAT fScaleX = FXSYS_fabs(ctm.a); + FX_FLOAT fScaleY = FXSYS_fabs(ctm.d); + m_Matrix.Concat(fScaleX, 0, 0, fScaleY, 0, 0); + CFX_FloatRect rect(*pRect); + m_Matrix.TransformRect(rect); + FX_RECT bitmap_rect = rect.GetOutterRect(); + m_pBitmap.reset(new CFX_DIBitmap); + m_pBitmap->Create(bitmap_rect.Width(), bitmap_rect.Height(), FXDIB_Argb); + return TRUE; +} +void CPDF_DeviceBuffer::OutputToDevice() { + if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) { + if (m_Matrix.a == 1.0f && m_Matrix.d == 1.0f) { + m_pDevice->SetDIBits(m_pBitmap.get(), m_Rect.left, m_Rect.top); + } else { + m_pDevice->StretchDIBits(m_pBitmap.get(), m_Rect.left, m_Rect.top, + m_Rect.Width(), m_Rect.Height()); + } + } else { + CFX_DIBitmap buffer; + m_pDevice->CreateCompatibleBitmap(&buffer, m_pBitmap->GetWidth(), + m_pBitmap->GetHeight()); + m_pContext->GetBackground(&buffer, m_pObject, NULL, &m_Matrix); + buffer.CompositeBitmap(0, 0, buffer.GetWidth(), buffer.GetHeight(), + m_pBitmap.get(), 0, 0); + m_pDevice->StretchDIBits(&buffer, m_Rect.left, m_Rect.top, m_Rect.Width(), + m_Rect.Height()); + } +} + +CPDF_ScaledRenderBuffer::CPDF_ScaledRenderBuffer() {} + +CPDF_ScaledRenderBuffer::~CPDF_ScaledRenderBuffer() {} + +#define _FPDFAPI_IMAGESIZE_LIMIT_ (30 * 1024 * 1024) +FX_BOOL CPDF_ScaledRenderBuffer::Initialize(CPDF_RenderContext* pContext, + CFX_RenderDevice* pDevice, + const FX_RECT& pRect, + const CPDF_PageObject* pObj, + const CPDF_RenderOptions* pOptions, + int max_dpi) { + m_pDevice = pDevice; + if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) { + return TRUE; + } + m_pContext = pContext; + m_Rect = pRect; + m_pObject = pObj; + m_Matrix.TranslateI(-pRect.left, -pRect.top); + int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE); + int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE); + if (horz_size && vert_size && max_dpi) { + int dpih = + pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10); + int dpiv = + pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10); + if (dpih > max_dpi) { + m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f); + } + if (dpiv > max_dpi) { + m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv); + } + } + m_pBitmapDevice.reset(new CFX_FxgeDevice); + FXDIB_Format dibFormat = FXDIB_Rgb; + int32_t bpp = 24; + if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_ALPHA_OUTPUT) { + dibFormat = FXDIB_Argb; + bpp = 32; + } + while (1) { + CFX_FloatRect rect(pRect); + m_Matrix.TransformRect(rect); + FX_RECT bitmap_rect = rect.GetOutterRect(); + int32_t iWidth = bitmap_rect.Width(); + int32_t iHeight = bitmap_rect.Height(); + int32_t iPitch = (iWidth * bpp + 31) / 32 * 4; + if (iWidth * iHeight < 1) + return FALSE; + + if (iPitch * iHeight <= _FPDFAPI_IMAGESIZE_LIMIT_ && + m_pBitmapDevice->Create(iWidth, iHeight, dibFormat)) { + break; + } + m_Matrix.Scale(0.5f, 0.5f); + } + m_pContext->GetBackground(m_pBitmapDevice->GetBitmap(), m_pObject, pOptions, + &m_Matrix); + return TRUE; +} +void CPDF_ScaledRenderBuffer::OutputToDevice() { + if (m_pBitmapDevice) { + m_pDevice->StretchDIBits(m_pBitmapDevice->GetBitmap(), m_Rect.left, + m_Rect.top, m_Rect.Width(), m_Rect.Height()); + } +} +FX_BOOL IPDF_OCContext::CheckObjectVisible(const CPDF_PageObject* pObj) { + const CPDF_ContentMarkData* pData = pObj->m_ContentMark; + int nItems = pData->CountItems(); + for (int i = 0; i < nItems; i++) { + const CPDF_ContentMarkItem& item = pData->GetItem(i); + if (item.GetName() == "OC" && + item.GetParamType() == CPDF_ContentMarkItem::PropertiesDict && + !CheckOCGVisible(item.GetParam())) { + return FALSE; + } + } + return TRUE; +} diff --git a/core/fpdfapi/fpdf_render/fpdf_render_cache.cpp b/core/fpdfapi/fpdf_render/fpdf_render_cache.cpp new file mode 100644 index 0000000000..f5ab7e0da5 --- /dev/null +++ b/core/fpdfapi/fpdf_render/fpdf_render_cache.cpp @@ -0,0 +1,334 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "core/fpdfapi/fpdf_render/render_int.h" + +#include "core/fpdfapi/fpdf_page/pageint.h" +#include "core/include/fpdfapi/cpdf_document.h" +#include "core/include/fpdfapi/fpdf_pageobj.h" +#include "core/include/fpdfapi/fpdf_render.h" +#include "core/include/fxge/fx_ge.h" + +struct CACHEINFO { + FX_DWORD time; + CPDF_Stream* pStream; +}; + +extern "C" { +static int compare(const void* data1, const void* data2) { + return ((CACHEINFO*)data1)->time - ((CACHEINFO*)data2)->time; +} +} // extern "C" + +CPDF_PageRenderCache::~CPDF_PageRenderCache() { + for (const auto& it : m_ImageCache) + delete it.second; +} +void CPDF_PageRenderCache::CacheOptimization(int32_t dwLimitCacheSize) { + if (m_nCacheSize <= (FX_DWORD)dwLimitCacheSize) + return; + + size_t nCount = m_ImageCache.size(); + CACHEINFO* pCACHEINFO = FX_Alloc(CACHEINFO, nCount); + size_t i = 0; + for (const auto& it : m_ImageCache) { + pCACHEINFO[i].time = it.second->GetTimeCount(); + pCACHEINFO[i++].pStream = it.second->GetStream(); + } + FXSYS_qsort(pCACHEINFO, nCount, sizeof(CACHEINFO), compare); + FX_DWORD nTimeCount = m_nTimeCount; + + // Check if time value is about to roll over and reset all entries. + // The comparision is legal because FX_DWORD is an unsigned type. + if (nTimeCount + 1 < nTimeCount) { + for (i = 0; i < nCount; i++) + m_ImageCache[pCACHEINFO[i].pStream]->m_dwTimeCount = i; + m_nTimeCount = nCount; + } + + i = 0; + while (i + 15 < nCount) + ClearImageCacheEntry(pCACHEINFO[i++].pStream); + + while (i < nCount && m_nCacheSize > (FX_DWORD)dwLimitCacheSize) + ClearImageCacheEntry(pCACHEINFO[i++].pStream); + + FX_Free(pCACHEINFO); +} +void CPDF_PageRenderCache::ClearImageCacheEntry(CPDF_Stream* pStream) { + auto it = m_ImageCache.find(pStream); + if (it == m_ImageCache.end()) + return; + + m_nCacheSize -= it->second->EstimateSize(); + delete it->second; + m_ImageCache.erase(it); +} +FX_DWORD CPDF_PageRenderCache::EstimateSize() { + FX_DWORD dwSize = 0; + for (const auto& it : m_ImageCache) + dwSize += it.second->EstimateSize(); + + m_nCacheSize = dwSize; + return dwSize; +} +void CPDF_PageRenderCache::GetCachedBitmap(CPDF_Stream* pStream, + CFX_DIBSource*& pBitmap, + CFX_DIBSource*& pMask, + FX_DWORD& MatteColor, + FX_BOOL bStdCS, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask, + CPDF_RenderStatus* pRenderStatus, + int32_t downsampleWidth, + int32_t downsampleHeight) { + CPDF_ImageCacheEntry* pEntry; + const auto it = m_ImageCache.find(pStream); + FX_BOOL bFound = it != m_ImageCache.end(); + if (bFound) + pEntry = it->second; + else + pEntry = new CPDF_ImageCacheEntry(m_pPage->m_pDocument, pStream); + + m_nTimeCount++; + FX_BOOL bAlreadyCached = pEntry->GetCachedBitmap( + pBitmap, pMask, MatteColor, m_pPage->m_pPageResources, bStdCS, + GroupFamily, bLoadMask, pRenderStatus, downsampleWidth, downsampleHeight); + + if (!bFound) + m_ImageCache[pStream] = pEntry; + + if (!bAlreadyCached) + m_nCacheSize += pEntry->EstimateSize(); +} +FX_BOOL CPDF_PageRenderCache::StartGetCachedBitmap( + CPDF_Stream* pStream, + FX_BOOL bStdCS, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask, + CPDF_RenderStatus* pRenderStatus, + int32_t downsampleWidth, + int32_t downsampleHeight) { + const auto it = m_ImageCache.find(pStream); + m_bCurFindCache = it != m_ImageCache.end(); + if (m_bCurFindCache) { + m_pCurImageCacheEntry = it->second; + } else { + m_pCurImageCacheEntry = + new CPDF_ImageCacheEntry(m_pPage->m_pDocument, pStream); + } + int ret = m_pCurImageCacheEntry->StartGetCachedBitmap( + pRenderStatus->m_pFormResource, m_pPage->m_pPageResources, bStdCS, + GroupFamily, bLoadMask, pRenderStatus, downsampleWidth, downsampleHeight); + if (ret == 2) + return TRUE; + + m_nTimeCount++; + if (!m_bCurFindCache) + m_ImageCache[pStream] = m_pCurImageCacheEntry; + + if (!ret) + m_nCacheSize += m_pCurImageCacheEntry->EstimateSize(); + + return FALSE; +} +FX_BOOL CPDF_PageRenderCache::Continue(IFX_Pause* pPause) { + int ret = m_pCurImageCacheEntry->Continue(pPause); + if (ret == 2) + return TRUE; + m_nTimeCount++; + if (!m_bCurFindCache) + m_ImageCache[m_pCurImageCacheEntry->GetStream()] = m_pCurImageCacheEntry; + if (!ret) + m_nCacheSize += m_pCurImageCacheEntry->EstimateSize(); + return FALSE; +} +void CPDF_PageRenderCache::ResetBitmap(CPDF_Stream* pStream, + const CFX_DIBitmap* pBitmap) { + CPDF_ImageCacheEntry* pEntry; + const auto it = m_ImageCache.find(pStream); + if (it == m_ImageCache.end()) { + if (!pBitmap) + return; + pEntry = new CPDF_ImageCacheEntry(m_pPage->m_pDocument, pStream); + m_ImageCache[pStream] = pEntry; + } else { + pEntry = it->second; + } + m_nCacheSize -= pEntry->EstimateSize(); + pEntry->Reset(pBitmap); + m_nCacheSize += pEntry->EstimateSize(); +} +CPDF_ImageCacheEntry::CPDF_ImageCacheEntry(CPDF_Document* pDoc, + CPDF_Stream* pStream) + : m_dwTimeCount(0), + m_pCurBitmap(NULL), + m_pCurMask(NULL), + m_MatteColor(0), + m_pRenderStatus(NULL), + m_pDocument(pDoc), + m_pStream(pStream), + m_pCachedBitmap(NULL), + m_pCachedMask(NULL), + m_dwCacheSize(0) {} +CPDF_ImageCacheEntry::~CPDF_ImageCacheEntry() { + delete m_pCachedBitmap; + delete m_pCachedMask; +} +void CPDF_ImageCacheEntry::Reset(const CFX_DIBitmap* pBitmap) { + delete m_pCachedBitmap; + m_pCachedBitmap = NULL; + if (pBitmap) { + m_pCachedBitmap = pBitmap->Clone(); + } + CalcSize(); +} +void CPDF_PageRenderCache::ClearImageData() { + for (const auto& it : m_ImageCache) + it.second->ClearImageData(); +} +void CPDF_ImageCacheEntry::ClearImageData() { + if (m_pCachedBitmap && !m_pCachedBitmap->GetBuffer()) { + ((CPDF_DIBSource*)m_pCachedBitmap)->ClearImageData(); + } +} +static FX_DWORD FPDF_ImageCache_EstimateImageSize(const CFX_DIBSource* pDIB) { + return pDIB && pDIB->GetBuffer() + ? (FX_DWORD)pDIB->GetHeight() * pDIB->GetPitch() + + (FX_DWORD)pDIB->GetPaletteSize() * 4 + : 0; +} +FX_BOOL CPDF_ImageCacheEntry::GetCachedBitmap(CFX_DIBSource*& pBitmap, + CFX_DIBSource*& pMask, + FX_DWORD& MatteColor, + CPDF_Dictionary* pPageResources, + FX_BOOL bStdCS, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask, + CPDF_RenderStatus* pRenderStatus, + int32_t downsampleWidth, + int32_t downsampleHeight) { + if (m_pCachedBitmap) { + pBitmap = m_pCachedBitmap; + pMask = m_pCachedMask; + MatteColor = m_MatteColor; + return TRUE; + } + if (!pRenderStatus) { + return FALSE; + } + CPDF_RenderContext* pContext = pRenderStatus->GetContext(); + CPDF_PageRenderCache* pPageRenderCache = pContext->GetPageCache(); + m_dwTimeCount = pPageRenderCache->GetTimeCount(); + CPDF_DIBSource* pSrc = new CPDF_DIBSource; + CPDF_DIBSource* pMaskSrc = NULL; + if (!pSrc->Load(m_pDocument, m_pStream, &pMaskSrc, &MatteColor, + pRenderStatus->m_pFormResource, pPageResources, bStdCS, + GroupFamily, bLoadMask)) { + delete pSrc; + pBitmap = NULL; + return FALSE; + } + m_MatteColor = MatteColor; + if (pSrc->GetPitch() * pSrc->GetHeight() < FPDF_HUGE_IMAGE_SIZE) { + m_pCachedBitmap = pSrc->Clone(); + delete pSrc; + } else { + m_pCachedBitmap = pSrc; + } + if (pMaskSrc) { + m_pCachedMask = pMaskSrc->Clone(); + delete pMaskSrc; + } + + pBitmap = m_pCachedBitmap; + pMask = m_pCachedMask; + CalcSize(); + return FALSE; +} +CFX_DIBSource* CPDF_ImageCacheEntry::DetachBitmap() { + CFX_DIBSource* pDIBSource = m_pCurBitmap; + m_pCurBitmap = NULL; + return pDIBSource; +} +CFX_DIBSource* CPDF_ImageCacheEntry::DetachMask() { + CFX_DIBSource* pDIBSource = m_pCurMask; + m_pCurMask = NULL; + return pDIBSource; +} +int CPDF_ImageCacheEntry::StartGetCachedBitmap(CPDF_Dictionary* pFormResources, + CPDF_Dictionary* pPageResources, + FX_BOOL bStdCS, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask, + CPDF_RenderStatus* pRenderStatus, + int32_t downsampleWidth, + int32_t downsampleHeight) { + if (m_pCachedBitmap) { + m_pCurBitmap = m_pCachedBitmap; + m_pCurMask = m_pCachedMask; + return 1; + } + if (!pRenderStatus) { + return 0; + } + m_pRenderStatus = pRenderStatus; + m_pCurBitmap = new CPDF_DIBSource; + int ret = + ((CPDF_DIBSource*)m_pCurBitmap) + ->StartLoadDIBSource(m_pDocument, m_pStream, TRUE, pFormResources, + pPageResources, bStdCS, GroupFamily, bLoadMask); + if (ret == 2) { + return ret; + } + if (!ret) { + delete m_pCurBitmap; + m_pCurBitmap = NULL; + return 0; + } + ContinueGetCachedBitmap(); + return 0; +} +void CPDF_ImageCacheEntry::ContinueGetCachedBitmap() { + m_MatteColor = ((CPDF_DIBSource*)m_pCurBitmap)->GetMatteColor(); + m_pCurMask = ((CPDF_DIBSource*)m_pCurBitmap)->DetachMask(); + CPDF_RenderContext* pContext = m_pRenderStatus->GetContext(); + CPDF_PageRenderCache* pPageRenderCache = pContext->GetPageCache(); + m_dwTimeCount = pPageRenderCache->GetTimeCount(); + if (m_pCurBitmap->GetPitch() * m_pCurBitmap->GetHeight() < + FPDF_HUGE_IMAGE_SIZE) { + m_pCachedBitmap = m_pCurBitmap->Clone(); + delete m_pCurBitmap; + m_pCurBitmap = NULL; + } else { + m_pCachedBitmap = m_pCurBitmap; + } + if (m_pCurMask) { + m_pCachedMask = m_pCurMask->Clone(); + delete m_pCurMask; + m_pCurMask = NULL; + } + m_pCurBitmap = m_pCachedBitmap; + m_pCurMask = m_pCachedMask; + CalcSize(); +} +int CPDF_ImageCacheEntry::Continue(IFX_Pause* pPause) { + int ret = ((CPDF_DIBSource*)m_pCurBitmap)->ContinueLoadDIBSource(pPause); + if (ret == 2) { + return ret; + } + if (!ret) { + delete m_pCurBitmap; + m_pCurBitmap = NULL; + return 0; + } + ContinueGetCachedBitmap(); + return 0; +} +void CPDF_ImageCacheEntry::CalcSize() { + m_dwCacheSize = FPDF_ImageCache_EstimateImageSize(m_pCachedBitmap) + + FPDF_ImageCache_EstimateImageSize(m_pCachedMask); +} diff --git a/core/fpdfapi/fpdf_render/fpdf_render_image.cpp b/core/fpdfapi/fpdf_render/fpdf_render_image.cpp new file mode 100644 index 0000000000..6c235a0258 --- /dev/null +++ b/core/fpdfapi/fpdf_render/fpdf_render_image.cpp @@ -0,0 +1,998 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "core/fpdfapi/fpdf_render/render_int.h" + +#include +#include + +#include "core/fpdfapi/fpdf_page/pageint.h" +#include "core/include/fpdfapi/cpdf_array.h" +#include "core/include/fpdfapi/cpdf_dictionary.h" +#include "core/include/fpdfapi/cpdf_document.h" +#include "core/include/fpdfapi/fpdf_module.h" +#include "core/include/fpdfapi/fpdf_pageobj.h" +#include "core/include/fpdfapi/fpdf_render.h" +#include "core/include/fxcodec/fx_codec.h" +#include "core/include/fxcrt/fx_safe_types.h" +#include "core/include/fxge/fx_ge.h" + +FX_BOOL CPDF_RenderStatus::ProcessImage(const CPDF_ImageObject* pImageObj, + const CFX_Matrix* pObj2Device) { + CPDF_ImageRenderer render; + if (render.Start(this, pImageObj, pObj2Device, m_bStdCS, m_curBlend)) { + render.Continue(NULL); + } + return render.m_Result; +} +void CPDF_RenderStatus::CompositeDIBitmap(CFX_DIBitmap* pDIBitmap, + int left, + int top, + FX_ARGB mask_argb, + int bitmap_alpha, + int blend_mode, + int Transparency) { + if (!pDIBitmap) { + return; + } + FX_BOOL bIsolated = Transparency & PDFTRANS_ISOLATED; + FX_BOOL bGroup = Transparency & PDFTRANS_GROUP; + if (blend_mode == FXDIB_BLEND_NORMAL) { + if (!pDIBitmap->IsAlphaMask()) { + if (bitmap_alpha < 255) { + pDIBitmap->MultiplyAlpha(bitmap_alpha); + } + if (m_pDevice->SetDIBits(pDIBitmap, left, top)) { + return; + } + } else { + FX_DWORD fill_argb = m_Options.TranslateColor(mask_argb); + if (bitmap_alpha < 255) { + ((uint8_t*)&fill_argb)[3] = + ((uint8_t*)&fill_argb)[3] * bitmap_alpha / 255; + } + if (m_pDevice->SetBitMask(pDIBitmap, left, top, fill_argb)) { + return; + } + } + } + FX_BOOL bBackAlphaRequired = blend_mode && bIsolated && !m_bDropObjects; + FX_BOOL bGetBackGround = + ((m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT)) || + (!(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT) && + (m_pDevice->GetRenderCaps() & FXRC_GET_BITS) && !bBackAlphaRequired); + if (bGetBackGround) { + if (bIsolated || !bGroup) { + if (pDIBitmap->IsAlphaMask()) { + return; + } + m_pDevice->SetDIBits(pDIBitmap, left, top, blend_mode); + } else { + FX_RECT rect(left, top, left + pDIBitmap->GetWidth(), + top + pDIBitmap->GetHeight()); + rect.Intersect(m_pDevice->GetClipBox()); + CFX_DIBitmap* pClone = NULL; + FX_BOOL bClone = FALSE; + if (m_pDevice->GetBackDrop() && m_pDevice->GetBitmap()) { + bClone = TRUE; + pClone = m_pDevice->GetBackDrop()->Clone(&rect); + CFX_DIBitmap* pForeBitmap = m_pDevice->GetBitmap(); + pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(), + pForeBitmap, rect.left, rect.top); + left = left >= 0 ? 0 : left; + top = top >= 0 ? 0 : top; + if (!pDIBitmap->IsAlphaMask()) + pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(), + pDIBitmap, left, top, blend_mode); + else + pClone->CompositeMask(0, 0, pClone->GetWidth(), pClone->GetHeight(), + pDIBitmap, mask_argb, left, top, blend_mode); + } else { + pClone = pDIBitmap; + } + if (m_pDevice->GetBackDrop()) { + m_pDevice->SetDIBits(pClone, rect.left, rect.top); + } else { + if (pDIBitmap->IsAlphaMask()) { + return; + } + m_pDevice->SetDIBits(pDIBitmap, rect.left, rect.top, blend_mode); + } + if (bClone) { + delete pClone; + } + } + return; + } + int back_left, back_top; + FX_RECT rect(left, top, left + pDIBitmap->GetWidth(), + top + pDIBitmap->GetHeight()); + std::unique_ptr pBackdrop( + GetBackdrop(m_pCurObj, rect, back_left, back_top, + blend_mode > FXDIB_BLEND_NORMAL && bIsolated)); + if (!pBackdrop) + return; + + if (!pDIBitmap->IsAlphaMask()) { + pBackdrop->CompositeBitmap(left - back_left, top - back_top, + pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), + pDIBitmap, 0, 0, blend_mode); + } else { + pBackdrop->CompositeMask(left - back_left, top - back_top, + pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), + pDIBitmap, mask_argb, 0, 0, blend_mode); + } + + std::unique_ptr pBackdrop1(new CFX_DIBitmap); + pBackdrop1->Create(pBackdrop->GetWidth(), pBackdrop->GetHeight(), + FXDIB_Rgb32); + pBackdrop1->Clear((FX_DWORD)-1); + pBackdrop1->CompositeBitmap(0, 0, pBackdrop->GetWidth(), + pBackdrop->GetHeight(), pBackdrop.get(), 0, 0); + pBackdrop = std::move(pBackdrop1); + m_pDevice->SetDIBits(pBackdrop.get(), back_left, back_top); +} + +CPDF_TransferFunc::CPDF_TransferFunc(CPDF_Document* pDoc) : m_pPDFDoc(pDoc) {} + +FX_COLORREF CPDF_TransferFunc::TranslateColor(FX_COLORREF rgb) const { + return FXSYS_RGB(m_Samples[FXSYS_GetRValue(rgb)], + m_Samples[256 + FXSYS_GetGValue(rgb)], + m_Samples[512 + FXSYS_GetBValue(rgb)]); +} + +CFX_DIBSource* CPDF_TransferFunc::TranslateImage(const CFX_DIBSource* pSrc, + FX_BOOL bAutoDropSrc) { + CPDF_DIBTransferFunc* pDest = new CPDF_DIBTransferFunc(this); + pDest->LoadSrc(pSrc, bAutoDropSrc); + return pDest; +} + +CPDF_DIBTransferFunc::~CPDF_DIBTransferFunc() {} + +FXDIB_Format CPDF_DIBTransferFunc::GetDestFormat() { + if (m_pSrc->IsAlphaMask()) { + return FXDIB_8bppMask; + } +#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ + return (m_pSrc->HasAlpha()) ? FXDIB_Argb : FXDIB_Rgb32; +#else + return (m_pSrc->HasAlpha()) ? FXDIB_Argb : FXDIB_Rgb; +#endif +} +CPDF_DIBTransferFunc::CPDF_DIBTransferFunc( + const CPDF_TransferFunc* pTransferFunc) { + m_RampR = pTransferFunc->m_Samples; + m_RampG = &pTransferFunc->m_Samples[256]; + m_RampB = &pTransferFunc->m_Samples[512]; +} +void CPDF_DIBTransferFunc::TranslateScanline(uint8_t* dest_buf, + const uint8_t* src_buf) const { + int i; + FX_BOOL bSkip = FALSE; + switch (m_pSrc->GetFormat()) { + case FXDIB_1bppRgb: { + int r0 = m_RampR[0], g0 = m_RampG[0], b0 = m_RampB[0]; + int r1 = m_RampR[255], g1 = m_RampG[255], b1 = m_RampB[255]; + for (i = 0; i < m_Width; i++) { + if (src_buf[i / 8] & (1 << (7 - i % 8))) { + *dest_buf++ = b1; + *dest_buf++ = g1; + *dest_buf++ = r1; + } else { + *dest_buf++ = b0; + *dest_buf++ = g0; + *dest_buf++ = r0; + } +#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ + dest_buf++; +#endif + } + break; + } + case FXDIB_1bppMask: { + int m0 = m_RampR[0], m1 = m_RampR[255]; + for (i = 0; i < m_Width; i++) { + if (src_buf[i / 8] & (1 << (7 - i % 8))) { + *dest_buf++ = m1; + } else { + *dest_buf++ = m0; + } + } + break; + } + case FXDIB_8bppRgb: { + FX_ARGB* pPal = m_pSrc->GetPalette(); + for (i = 0; i < m_Width; i++) { + if (pPal) { + FX_ARGB src_argb = pPal[*src_buf]; + *dest_buf++ = m_RampB[FXARGB_R(src_argb)]; + *dest_buf++ = m_RampG[FXARGB_G(src_argb)]; + *dest_buf++ = m_RampR[FXARGB_B(src_argb)]; + } else { + FX_DWORD src_byte = *src_buf; + *dest_buf++ = m_RampB[src_byte]; + *dest_buf++ = m_RampG[src_byte]; + *dest_buf++ = m_RampR[src_byte]; + } + src_buf++; +#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ + dest_buf++; +#endif + } + break; + } + case FXDIB_8bppMask: + for (i = 0; i < m_Width; i++) { + *dest_buf++ = m_RampR[*(src_buf++)]; + } + break; + case FXDIB_Rgb: + for (i = 0; i < m_Width; i++) { + *dest_buf++ = m_RampB[*(src_buf++)]; + *dest_buf++ = m_RampG[*(src_buf++)]; + *dest_buf++ = m_RampR[*(src_buf++)]; +#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ + dest_buf++; +#endif + } + break; + case FXDIB_Rgb32: + bSkip = TRUE; + case FXDIB_Argb: + for (i = 0; i < m_Width; i++) { + *dest_buf++ = m_RampB[*(src_buf++)]; + *dest_buf++ = m_RampG[*(src_buf++)]; + *dest_buf++ = m_RampR[*(src_buf++)]; + if (!bSkip) { + *dest_buf++ = *src_buf; +#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ + } else { + dest_buf++; +#endif + } + src_buf++; + } + break; + default: + break; + } +} +void CPDF_DIBTransferFunc::TranslateDownSamples(uint8_t* dest_buf, + const uint8_t* src_buf, + int pixels, + int Bpp) const { + if (Bpp == 8) { + for (int i = 0; i < pixels; i++) { + *dest_buf++ = m_RampR[*(src_buf++)]; + } + } else if (Bpp == 24) { + for (int i = 0; i < pixels; i++) { + *dest_buf++ = m_RampB[*(src_buf++)]; + *dest_buf++ = m_RampG[*(src_buf++)]; + *dest_buf++ = m_RampR[*(src_buf++)]; + } + } else { +#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ + if (!m_pSrc->HasAlpha()) { + for (int i = 0; i < pixels; i++) { + *dest_buf++ = m_RampB[*(src_buf++)]; + *dest_buf++ = m_RampG[*(src_buf++)]; + *dest_buf++ = m_RampR[*(src_buf++)]; + dest_buf++; + src_buf++; + } + } else { +#endif + for (int i = 0; i < pixels; i++) { + *dest_buf++ = m_RampB[*(src_buf++)]; + *dest_buf++ = m_RampG[*(src_buf++)]; + *dest_buf++ = m_RampR[*(src_buf++)]; + *dest_buf++ = *(src_buf++); + } +#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ + } +#endif + } +} +CPDF_ImageRenderer::CPDF_ImageRenderer() { + m_pRenderStatus = NULL; + m_pImageObject = NULL; + m_Result = TRUE; + m_Status = 0; + m_pTransformer = NULL; + m_DeviceHandle = NULL; + m_LoadHandle = NULL; + m_pClone = NULL; + m_bStdCS = FALSE; + m_bPatternColor = FALSE; + m_BlendType = FXDIB_BLEND_NORMAL; + m_pPattern = NULL; + m_pObj2Device = NULL; +} +CPDF_ImageRenderer::~CPDF_ImageRenderer() { + delete m_pTransformer; + if (m_DeviceHandle) { + m_pRenderStatus->m_pDevice->CancelDIBits(m_DeviceHandle); + } + delete m_LoadHandle; + delete m_pClone; +} +FX_BOOL CPDF_ImageRenderer::StartLoadDIBSource() { + CFX_FloatRect image_rect_f = m_ImageMatrix.GetUnitRect(); + FX_RECT image_rect = image_rect_f.GetOutterRect(); + int dest_width = image_rect.Width(); + int dest_height = image_rect.Height(); + if (m_ImageMatrix.a < 0) { + dest_width = -dest_width; + } + if (m_ImageMatrix.d > 0) { + dest_height = -dest_height; + } + if (m_Loader.Start(m_pImageObject, + m_pRenderStatus->m_pContext->GetPageCache(), m_LoadHandle, + m_bStdCS, m_pRenderStatus->m_GroupFamily, + m_pRenderStatus->m_bLoadMask, m_pRenderStatus, dest_width, + dest_height)) { + if (m_LoadHandle) { + m_Status = 4; + return TRUE; + } + } + return FALSE; +} +FX_BOOL CPDF_ImageRenderer::StartRenderDIBSource() { + if (!m_Loader.m_pBitmap) { + return FALSE; + } + m_BitmapAlpha = 255; + const CPDF_GeneralStateData* pGeneralState = m_pImageObject->m_GeneralState; + if (pGeneralState) { + m_BitmapAlpha = FXSYS_round(pGeneralState->m_FillAlpha * 255); + } + m_pDIBSource = m_Loader.m_pBitmap; + if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_ALPHA && + !m_Loader.m_pMask) { + return StartBitmapAlpha(); + } + if (pGeneralState && pGeneralState->m_pTR) { + if (!pGeneralState->m_pTransferFunc) { + ((CPDF_GeneralStateData*)pGeneralState)->m_pTransferFunc = + m_pRenderStatus->GetTransferFunc(pGeneralState->m_pTR); + } + if (pGeneralState->m_pTransferFunc && + !pGeneralState->m_pTransferFunc->m_bIdentity) { + m_pDIBSource = m_Loader.m_pBitmap = + pGeneralState->m_pTransferFunc->TranslateImage(m_Loader.m_pBitmap, + !m_Loader.m_bCached); + if (m_Loader.m_bCached && m_Loader.m_pMask) { + m_Loader.m_pMask = m_Loader.m_pMask->Clone(); + } + m_Loader.m_bCached = FALSE; + } + } + m_FillArgb = 0; + m_bPatternColor = FALSE; + m_pPattern = NULL; + if (m_pDIBSource->IsAlphaMask()) { + CPDF_Color* pColor = m_pImageObject->m_ColorState.GetFillColor(); + if (pColor && pColor->IsPattern()) { + m_pPattern = pColor->GetPattern(); + if (m_pPattern) { + m_bPatternColor = TRUE; + } + } + m_FillArgb = m_pRenderStatus->GetFillArgb(m_pImageObject); + } else if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_GRAY) { + m_pClone = m_pDIBSource->Clone(); + m_pClone->ConvertColorScale(m_pRenderStatus->m_Options.m_BackColor, + m_pRenderStatus->m_Options.m_ForeColor); + m_pDIBSource = m_pClone; + } + m_Flags = 0; + if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_DOWNSAMPLE) { + m_Flags |= RENDER_FORCE_DOWNSAMPLE; + } else if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_HALFTONE) { + m_Flags |= RENDER_FORCE_HALFTONE; + } + if (m_pRenderStatus->m_pDevice->GetDeviceClass() != FXDC_DISPLAY) { + CPDF_Object* pFilters = + m_pImageObject->m_pImage->GetStream()->GetDict()->GetElementValue( + "Filter"); + if (pFilters) { + if (pFilters->IsName()) { + CFX_ByteStringC bsDecodeType = pFilters->GetConstString(); + if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode") { + m_Flags |= FXRENDER_IMAGE_LOSSY; + } + } else if (CPDF_Array* pArray = pFilters->AsArray()) { + for (FX_DWORD i = 0; i < pArray->GetCount(); i++) { + CFX_ByteStringC bsDecodeType = pArray->GetConstStringAt(i); + if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode") { + m_Flags |= FXRENDER_IMAGE_LOSSY; + break; + } + } + } + } + } + if (m_pRenderStatus->m_Options.m_Flags & RENDER_NOIMAGESMOOTH) { + m_Flags |= FXDIB_NOSMOOTH; + } else if (m_pImageObject->m_pImage->IsInterpol()) { + m_Flags |= FXDIB_INTERPOL; + } + if (m_Loader.m_pMask) { + return DrawMaskedImage(); + } + if (m_bPatternColor) { + return DrawPatternImage(m_pObj2Device); + } + if (m_BitmapAlpha == 255 && pGeneralState && pGeneralState->m_FillOP && + pGeneralState->m_OPMode == 0 && + pGeneralState->m_BlendType == FXDIB_BLEND_NORMAL && + pGeneralState->m_StrokeAlpha == 1 && pGeneralState->m_FillAlpha == 1) { + CPDF_Document* pDocument = NULL; + CPDF_Page* pPage = NULL; + if (m_pRenderStatus->m_pContext->GetPageCache()) { + pPage = m_pRenderStatus->m_pContext->GetPageCache()->GetPage(); + pDocument = pPage->m_pDocument; + } else { + pDocument = m_pImageObject->m_pImage->GetDocument(); + } + CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL; + CPDF_Object* pCSObj = + m_pImageObject->m_pImage->GetStream()->GetDict()->GetElementValue( + "ColorSpace"); + CPDF_ColorSpace* pColorSpace = + pDocument->LoadColorSpace(pCSObj, pPageResources); + if (pColorSpace) { + int format = pColorSpace->GetFamily(); + if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION || + format == PDFCS_DEVICEN) { + m_BlendType = FXDIB_BLEND_DARKEN; + } + pDocument->GetPageData()->ReleaseColorSpace(pCSObj); + } + } + return StartDIBSource(); +} +FX_BOOL CPDF_ImageRenderer::Start(CPDF_RenderStatus* pStatus, + const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bStdCS, + int blendType) { + m_pRenderStatus = pStatus; + m_bStdCS = bStdCS; + m_pImageObject = pObj->AsImage(); + m_BlendType = blendType; + m_pObj2Device = pObj2Device; + CPDF_Dictionary* pOC = m_pImageObject->m_pImage->GetOC(); + if (pOC && m_pRenderStatus->m_Options.m_pOCContext && + !m_pRenderStatus->m_Options.m_pOCContext->CheckOCGVisible(pOC)) { + return FALSE; + } + m_ImageMatrix = m_pImageObject->m_Matrix; + m_ImageMatrix.Concat(*pObj2Device); + if (StartLoadDIBSource()) { + return TRUE; + } + return StartRenderDIBSource(); +} +FX_BOOL CPDF_ImageRenderer::Start(CPDF_RenderStatus* pStatus, + const CFX_DIBSource* pDIBSource, + FX_ARGB bitmap_argb, + int bitmap_alpha, + const CFX_Matrix* pImage2Device, + FX_DWORD flags, + FX_BOOL bStdCS, + int blendType) { + m_pRenderStatus = pStatus; + m_pDIBSource = pDIBSource; + m_FillArgb = bitmap_argb; + m_BitmapAlpha = bitmap_alpha; + m_ImageMatrix = *pImage2Device; + m_Flags = flags; + m_bStdCS = bStdCS; + m_BlendType = blendType; + return StartDIBSource(); +} +FX_BOOL CPDF_ImageRenderer::DrawPatternImage(const CFX_Matrix* pObj2Device) { + if (m_pRenderStatus->m_bPrint && + !(m_pRenderStatus->m_pDevice->GetRenderCaps() & FXRC_BLEND_MODE)) { + m_Result = FALSE; + return FALSE; + } + FX_RECT rect = m_ImageMatrix.GetUnitRect().GetOutterRect(); + rect.Intersect(m_pRenderStatus->m_pDevice->GetClipBox()); + if (rect.IsEmpty()) { + return FALSE; + } + CFX_Matrix new_matrix = m_ImageMatrix; + new_matrix.TranslateI(-rect.left, -rect.top); + int width = rect.Width(); + int height = rect.Height(); + CFX_FxgeDevice bitmap_device1; + if (!bitmap_device1.Create(rect.Width(), rect.Height(), FXDIB_Rgb32)) { + return TRUE; + } + bitmap_device1.GetBitmap()->Clear(0xffffff); + { + CPDF_RenderStatus bitmap_render; + bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1, NULL, + NULL, NULL, NULL, &m_pRenderStatus->m_Options, 0, + m_pRenderStatus->m_bDropObjects, NULL, TRUE); + CFX_Matrix patternDevice = *pObj2Device; + patternDevice.Translate((FX_FLOAT)-rect.left, (FX_FLOAT)-rect.top); + if (m_pPattern->m_PatternType == CPDF_Pattern::TILING) { + bitmap_render.DrawTilingPattern( + static_cast(m_pPattern), m_pImageObject, + &patternDevice, FALSE); + } else { + bitmap_render.DrawShadingPattern( + static_cast(m_pPattern), m_pImageObject, + &patternDevice, FALSE); + } + } + { + CFX_FxgeDevice bitmap_device2; + if (!bitmap_device2.Create(rect.Width(), rect.Height(), FXDIB_8bppRgb)) { + return TRUE; + } + bitmap_device2.GetBitmap()->Clear(0); + CPDF_RenderStatus bitmap_render; + bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device2, NULL, + NULL, NULL, NULL, NULL, 0, + m_pRenderStatus->m_bDropObjects, NULL, TRUE); + CPDF_ImageRenderer image_render; + if (image_render.Start(&bitmap_render, m_pDIBSource, 0xffffffff, 255, + &new_matrix, m_Flags, TRUE)) { + image_render.Continue(NULL); + } + if (m_Loader.m_MatteColor != 0xffffffff) { + int matte_r = FXARGB_R(m_Loader.m_MatteColor); + int matte_g = FXARGB_G(m_Loader.m_MatteColor); + int matte_b = FXARGB_B(m_Loader.m_MatteColor); + for (int row = 0; row < height; row++) { + uint8_t* dest_scan = + (uint8_t*)bitmap_device1.GetBitmap()->GetScanline(row); + const uint8_t* mask_scan = bitmap_device2.GetBitmap()->GetScanline(row); + for (int col = 0; col < width; col++) { + int alpha = *mask_scan++; + if (alpha) { + int orig = (*dest_scan - matte_b) * 255 / alpha + matte_b; + if (orig < 0) { + orig = 0; + } else if (orig > 255) { + orig = 255; + } + *dest_scan++ = orig; + orig = (*dest_scan - matte_g) * 255 / alpha + matte_g; + if (orig < 0) { + orig = 0; + } else if (orig > 255) { + orig = 255; + } + *dest_scan++ = orig; + orig = (*dest_scan - matte_r) * 255 / alpha + matte_r; + if (orig < 0) { + orig = 0; + } else if (orig > 255) { + orig = 255; + } + *dest_scan++ = orig; + dest_scan++; + } else { + dest_scan += 4; + } + } + } + } + bitmap_device2.GetBitmap()->ConvertFormat(FXDIB_8bppMask); + bitmap_device1.GetBitmap()->MultiplyAlpha(bitmap_device2.GetBitmap()); + bitmap_device1.GetBitmap()->MultiplyAlpha(255); + } + m_pRenderStatus->m_pDevice->SetDIBits(bitmap_device1.GetBitmap(), rect.left, + rect.top, m_BlendType); + return FALSE; +} +FX_BOOL CPDF_ImageRenderer::DrawMaskedImage() { + if (m_pRenderStatus->m_bPrint && + !(m_pRenderStatus->m_pDevice->GetRenderCaps() & FXRC_BLEND_MODE)) { + m_Result = FALSE; + return FALSE; + } + FX_RECT rect = m_ImageMatrix.GetUnitRect().GetOutterRect(); + rect.Intersect(m_pRenderStatus->m_pDevice->GetClipBox()); + if (rect.IsEmpty()) { + return FALSE; + } + CFX_Matrix new_matrix = m_ImageMatrix; + new_matrix.TranslateI(-rect.left, -rect.top); + int width = rect.Width(); + int height = rect.Height(); + CFX_FxgeDevice bitmap_device1; + if (!bitmap_device1.Create(width, height, FXDIB_Rgb32)) { + return TRUE; + } + bitmap_device1.GetBitmap()->Clear(0xffffff); + { + CPDF_RenderStatus bitmap_render; + bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1, NULL, + NULL, NULL, NULL, NULL, 0, + m_pRenderStatus->m_bDropObjects, NULL, TRUE); + CPDF_ImageRenderer image_render; + if (image_render.Start(&bitmap_render, m_pDIBSource, 0, 255, &new_matrix, + m_Flags, TRUE)) { + image_render.Continue(NULL); + } + } + { + CFX_FxgeDevice bitmap_device2; + if (!bitmap_device2.Create(width, height, FXDIB_8bppRgb)) { + return TRUE; + } + bitmap_device2.GetBitmap()->Clear(0); + CPDF_RenderStatus bitmap_render; + bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device2, NULL, + NULL, NULL, NULL, NULL, 0, + m_pRenderStatus->m_bDropObjects, NULL, TRUE); + CPDF_ImageRenderer image_render; + if (image_render.Start(&bitmap_render, m_Loader.m_pMask, 0xffffffff, 255, + &new_matrix, m_Flags, TRUE)) { + image_render.Continue(NULL); + } + if (m_Loader.m_MatteColor != 0xffffffff) { + int matte_r = FXARGB_R(m_Loader.m_MatteColor); + int matte_g = FXARGB_G(m_Loader.m_MatteColor); + int matte_b = FXARGB_B(m_Loader.m_MatteColor); + for (int row = 0; row < height; row++) { + uint8_t* dest_scan = + (uint8_t*)bitmap_device1.GetBitmap()->GetScanline(row); + const uint8_t* mask_scan = bitmap_device2.GetBitmap()->GetScanline(row); + for (int col = 0; col < width; col++) { + int alpha = *mask_scan++; + if (alpha) { + int orig = (*dest_scan - matte_b) * 255 / alpha + matte_b; + if (orig < 0) { + orig = 0; + } else if (orig > 255) { + orig = 255; + } + *dest_scan++ = orig; + orig = (*dest_scan - matte_g) * 255 / alpha + matte_g; + if (orig < 0) { + orig = 0; + } else if (orig > 255) { + orig = 255; + } + *dest_scan++ = orig; + orig = (*dest_scan - matte_r) * 255 / alpha + matte_r; + if (orig < 0) { + orig = 0; + } else if (orig > 255) { + orig = 255; + } + *dest_scan++ = orig; + dest_scan++; + } else { + dest_scan += 4; + } + } + } + } + bitmap_device2.GetBitmap()->ConvertFormat(FXDIB_8bppMask); + bitmap_device1.GetBitmap()->MultiplyAlpha(bitmap_device2.GetBitmap()); + if (m_BitmapAlpha < 255) { + bitmap_device1.GetBitmap()->MultiplyAlpha(m_BitmapAlpha); + } + } + m_pRenderStatus->m_pDevice->SetDIBits(bitmap_device1.GetBitmap(), rect.left, + rect.top, m_BlendType); + return FALSE; +} +FX_BOOL CPDF_ImageRenderer::StartDIBSource() { + if (!(m_Flags & RENDER_FORCE_DOWNSAMPLE) && m_pDIBSource->GetBPP() > 1) { + int image_size = m_pDIBSource->GetBPP() / 8 * m_pDIBSource->GetWidth() * + m_pDIBSource->GetHeight(); + if (image_size > FPDF_HUGE_IMAGE_SIZE && + !(m_Flags & RENDER_FORCE_HALFTONE)) { + m_Flags |= RENDER_FORCE_DOWNSAMPLE; + } + } + if (m_pRenderStatus->m_pDevice->StartDIBits( + m_pDIBSource, m_BitmapAlpha, m_FillArgb, &m_ImageMatrix, m_Flags, + m_DeviceHandle, 0, NULL, m_BlendType)) { + if (m_DeviceHandle) { + m_Status = 3; + return TRUE; + } + return FALSE; + } + CFX_FloatRect image_rect_f = m_ImageMatrix.GetUnitRect(); + FX_RECT image_rect = image_rect_f.GetOutterRect(); + int dest_width = image_rect.Width(); + int dest_height = image_rect.Height(); + if ((FXSYS_fabs(m_ImageMatrix.b) >= 0.5f || m_ImageMatrix.a == 0) || + (FXSYS_fabs(m_ImageMatrix.c) >= 0.5f || m_ImageMatrix.d == 0)) { + if (m_pRenderStatus->m_bPrint && + !(m_pRenderStatus->m_pDevice->GetRenderCaps() & FXRC_BLEND_MODE)) { + m_Result = FALSE; + return FALSE; + } + FX_RECT clip_box = m_pRenderStatus->m_pDevice->GetClipBox(); + clip_box.Intersect(image_rect); + m_Status = 2; + m_pTransformer = new CFX_ImageTransformer; + m_pTransformer->Start(m_pDIBSource, &m_ImageMatrix, m_Flags, &clip_box); + return TRUE; + } + if (m_ImageMatrix.a < 0) { + dest_width = -dest_width; + } + if (m_ImageMatrix.d > 0) { + dest_height = -dest_height; + } + int dest_left, dest_top; + dest_left = dest_width > 0 ? image_rect.left : image_rect.right; + dest_top = dest_height > 0 ? image_rect.top : image_rect.bottom; + if (m_pDIBSource->IsOpaqueImage() && m_BitmapAlpha == 255) { + if (m_pRenderStatus->m_pDevice->StretchDIBits( + m_pDIBSource, dest_left, dest_top, dest_width, dest_height, m_Flags, + NULL, m_BlendType)) { + return FALSE; + } + } + if (m_pDIBSource->IsAlphaMask()) { + if (m_BitmapAlpha != 255) { + m_FillArgb = FXARGB_MUL_ALPHA(m_FillArgb, m_BitmapAlpha); + } + if (m_pRenderStatus->m_pDevice->StretchBitMask( + m_pDIBSource, dest_left, dest_top, dest_width, dest_height, + m_FillArgb, m_Flags)) { + return FALSE; + } + } + if (m_pRenderStatus->m_bPrint && + !(m_pRenderStatus->m_pDevice->GetRenderCaps() & FXRC_BLEND_MODE)) { + m_Result = FALSE; + return TRUE; + } + FX_RECT clip_box = m_pRenderStatus->m_pDevice->GetClipBox(); + FX_RECT dest_rect = clip_box; + dest_rect.Intersect(image_rect); + FX_RECT dest_clip( + dest_rect.left - image_rect.left, dest_rect.top - image_rect.top, + dest_rect.right - image_rect.left, dest_rect.bottom - image_rect.top); + std::unique_ptr pStretched( + m_pDIBSource->StretchTo(dest_width, dest_height, m_Flags, &dest_clip)); + if (pStretched) { + m_pRenderStatus->CompositeDIBitmap(pStretched.get(), dest_rect.left, + dest_rect.top, m_FillArgb, m_BitmapAlpha, + m_BlendType, FALSE); + } + return FALSE; +} +FX_BOOL CPDF_ImageRenderer::StartBitmapAlpha() { + if (m_pDIBSource->IsOpaqueImage()) { + CFX_PathData path; + path.AppendRect(0, 0, 1, 1); + path.Transform(&m_ImageMatrix); + FX_DWORD fill_color = + ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha); + m_pRenderStatus->m_pDevice->DrawPath(&path, NULL, NULL, fill_color, 0, + FXFILL_WINDING); + } else { + const CFX_DIBSource* pAlphaMask = m_pDIBSource->IsAlphaMask() + ? m_pDIBSource + : m_pDIBSource->GetAlphaMask(); + if (FXSYS_fabs(m_ImageMatrix.b) >= 0.5f || + FXSYS_fabs(m_ImageMatrix.c) >= 0.5f) { + int left, top; + std::unique_ptr pTransformed( + pAlphaMask->TransformTo(&m_ImageMatrix, left, top)); + if (!pTransformed) + return TRUE; + + m_pRenderStatus->m_pDevice->SetBitMask( + pTransformed.get(), left, top, + ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha)); + } else { + CFX_FloatRect image_rect_f = m_ImageMatrix.GetUnitRect(); + FX_RECT image_rect = image_rect_f.GetOutterRect(); + int dest_width = + m_ImageMatrix.a > 0 ? image_rect.Width() : -image_rect.Width(); + int dest_height = + m_ImageMatrix.d > 0 ? -image_rect.Height() : image_rect.Height(); + int left = dest_width > 0 ? image_rect.left : image_rect.right; + int top = dest_height > 0 ? image_rect.top : image_rect.bottom; + m_pRenderStatus->m_pDevice->StretchBitMask( + pAlphaMask, left, top, dest_width, dest_height, + ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha)); + } + if (m_pDIBSource != pAlphaMask) { + delete pAlphaMask; + } + } + return FALSE; +} +FX_BOOL CPDF_ImageRenderer::Continue(IFX_Pause* pPause) { + if (m_Status == 2) { + if (m_pTransformer->Continue(pPause)) { + return TRUE; + } + CFX_DIBitmap* pBitmap = m_pTransformer->m_Storer.Detach(); + if (!pBitmap) { + return FALSE; + } + if (pBitmap->IsAlphaMask()) { + if (m_BitmapAlpha != 255) { + m_FillArgb = FXARGB_MUL_ALPHA(m_FillArgb, m_BitmapAlpha); + } + m_Result = m_pRenderStatus->m_pDevice->SetBitMask( + pBitmap, m_pTransformer->m_ResultLeft, m_pTransformer->m_ResultTop, + m_FillArgb); + } else { + if (m_BitmapAlpha != 255) { + pBitmap->MultiplyAlpha(m_BitmapAlpha); + } + m_Result = m_pRenderStatus->m_pDevice->SetDIBits( + pBitmap, m_pTransformer->m_ResultLeft, m_pTransformer->m_ResultTop, + m_BlendType); + } + delete pBitmap; + return FALSE; + } + if (m_Status == 3) { + return m_pRenderStatus->m_pDevice->ContinueDIBits(m_DeviceHandle, pPause); + } + if (m_Status == 4) { + if (m_Loader.Continue(m_LoadHandle, pPause)) { + return TRUE; + } + if (StartRenderDIBSource()) { + return Continue(pPause); + } + } + return FALSE; +} +ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder( + const uint8_t* src_buf, + FX_DWORD src_size, + int width, + int height, + int nComps, + int bpc, + const CPDF_Dictionary* pParams); +CFX_DIBitmap* CPDF_RenderStatus::LoadSMask(CPDF_Dictionary* pSMaskDict, + FX_RECT* pClipRect, + const CFX_Matrix* pMatrix) { + if (!pSMaskDict) { + return NULL; + } + int width = pClipRect->right - pClipRect->left; + int height = pClipRect->bottom - pClipRect->top; + FX_BOOL bLuminosity = FALSE; + bLuminosity = pSMaskDict->GetConstStringBy("S") != "Alpha"; + CPDF_Stream* pGroup = pSMaskDict->GetStreamBy("G"); + if (!pGroup) { + return NULL; + } + std::unique_ptr pFunc; + CPDF_Object* pFuncObj = pSMaskDict->GetElementValue("TR"); + if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream())) + pFunc.reset(CPDF_Function::Load(pFuncObj)); + + CFX_Matrix matrix = *pMatrix; + matrix.TranslateI(-pClipRect->left, -pClipRect->top); + CPDF_Form form(m_pContext->GetDocument(), m_pContext->GetPageResources(), + pGroup); + form.ParseContent(NULL, NULL, NULL, NULL); + CFX_FxgeDevice bitmap_device; +#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ + if (!bitmap_device.Create(width, height, + bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask)) { + return NULL; + } +#else + if (!bitmap_device.Create(width, height, + bLuminosity ? FXDIB_Rgb : FXDIB_8bppMask)) { + return NULL; + } +#endif + CFX_DIBitmap& bitmap = *bitmap_device.GetBitmap(); + CPDF_Object* pCSObj = NULL; + CPDF_ColorSpace* pCS = NULL; + if (bLuminosity) { + CPDF_Array* pBC = pSMaskDict->GetArrayBy("BC"); + FX_ARGB back_color = 0xff000000; + if (pBC) { + CPDF_Dictionary* pDict = pGroup->GetDict(); + if (pDict && pDict->GetDictBy("Group")) + pCSObj = pDict->GetDictBy("Group")->GetElementValue("CS"); + else + pCSObj = NULL; + pCS = m_pContext->GetDocument()->LoadColorSpace(pCSObj); + if (pCS) { + FX_FLOAT R, G, B; + FX_DWORD comps = 8; + if (pCS->CountComponents() > comps) { + comps = pCS->CountComponents(); + } + CFX_FixedBufGrow float_array(comps); + FX_FLOAT* pFloats = float_array; + FX_SAFE_DWORD num_floats = comps; + num_floats *= sizeof(FX_FLOAT); + if (!num_floats.IsValid()) { + return NULL; + } + FXSYS_memset(pFloats, 0, num_floats.ValueOrDie()); + int count = pBC->GetCount() > 8 ? 8 : pBC->GetCount(); + for (int i = 0; i < count; i++) { + pFloats[i] = pBC->GetNumberAt(i); + } + pCS->GetRGB(pFloats, R, G, B); + back_color = 0xff000000 | ((int32_t)(R * 255) << 16) | + ((int32_t)(G * 255) << 8) | (int32_t)(B * 255); + m_pContext->GetDocument()->GetPageData()->ReleaseColorSpace(pCSObj); + } + } + bitmap.Clear(back_color); + } else { + bitmap.Clear(0); + } + CPDF_Dictionary* pFormResource = NULL; + if (form.m_pFormDict) { + pFormResource = form.m_pFormDict->GetDictBy("Resources"); + } + CPDF_RenderOptions options; + options.m_ColorMode = bLuminosity ? RENDER_COLOR_NORMAL : RENDER_COLOR_ALPHA; + CPDF_RenderStatus status; + status.Initialize(m_pContext, &bitmap_device, NULL, NULL, NULL, NULL, + &options, 0, m_bDropObjects, pFormResource, TRUE, NULL, 0, + pCS ? pCS->GetFamily() : 0, bLuminosity); + status.RenderObjectList(&form, &matrix); + std::unique_ptr pMask(new CFX_DIBitmap); + if (!pMask->Create(width, height, FXDIB_8bppMask)) + return nullptr; + + uint8_t* dest_buf = pMask->GetBuffer(); + int dest_pitch = pMask->GetPitch(); + uint8_t* src_buf = bitmap.GetBuffer(); + int src_pitch = bitmap.GetPitch(); + std::vector transfers(256); + if (pFunc) { + CFX_FixedBufGrow results(pFunc->CountOutputs()); + for (int i = 0; i < 256; i++) { + FX_FLOAT input = (FX_FLOAT)i / 255.0f; + int nresult; + pFunc->Call(&input, 1, results, nresult); + transfers[i] = FXSYS_round(results[0] * 255); + } + } else { + for (int i = 0; i < 256; i++) { + transfers[i] = i; + } + } + if (bLuminosity) { + int Bpp = bitmap.GetBPP() / 8; + for (int row = 0; row < height; row++) { + uint8_t* dest_pos = dest_buf + row * dest_pitch; + uint8_t* src_pos = src_buf + row * src_pitch; + for (int col = 0; col < width; col++) { + *dest_pos++ = transfers[FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos)]; + src_pos += Bpp; + } + } + } else if (pFunc) { + int size = dest_pitch * height; + for (int i = 0; i < size; i++) { + dest_buf[i] = transfers[src_buf[i]]; + } + } else { + FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height); + } + return pMask.release(); +} diff --git a/core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp b/core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp new file mode 100644 index 0000000000..f1a06c4fc7 --- /dev/null +++ b/core/fpdfapi/fpdf_render/fpdf_render_loadimage.cpp @@ -0,0 +1,1654 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "core/fpdfapi/fpdf_render/render_int.h" + +#include +#include +#include + +#include "core/fpdfapi/fpdf_page/pageint.h" +#include "core/include/fpdfapi/cpdf_array.h" +#include "core/include/fpdfapi/cpdf_dictionary.h" +#include "core/include/fpdfapi/cpdf_document.h" +#include "core/include/fpdfapi/fpdf_module.h" +#include "core/include/fpdfapi/fpdf_pageobj.h" +#include "core/include/fpdfapi/fpdf_render.h" +#include "core/include/fxcodec/fx_codec.h" +#include "core/include/fxcrt/fx_safe_types.h" +#include "core/include/fxge/fx_ge.h" + +namespace { + +unsigned int GetBits8(const uint8_t* pData, uint64_t bitpos, size_t nbits) { + ASSERT(nbits == 1 || nbits == 2 || nbits == 4 || nbits == 8 || nbits == 16); + ASSERT((bitpos & (nbits - 1)) == 0); + unsigned int byte = pData[bitpos / 8]; + if (nbits == 8) { + return byte; + } else if (nbits == 16) { + return byte * 256 + pData[bitpos / 8 + 1]; + } + + return (byte >> (8 - nbits - (bitpos % 8))) & ((1 << nbits) - 1); +} + +FX_SAFE_DWORD CalculatePitch8(FX_DWORD bpc, FX_DWORD components, int width) { + FX_SAFE_DWORD pitch = bpc; + pitch *= components; + pitch *= width; + pitch += 7; + pitch /= 8; + return pitch; +} + +FX_SAFE_DWORD CalculatePitch32(int bpp, int width) { + FX_SAFE_DWORD pitch = bpp; + pitch *= width; + pitch += 31; + pitch /= 32; // quantized to number of 32-bit words. + pitch *= 4; // and then back to bytes, (not just /8 in one step). + return pitch; +} + +bool IsAllowedBPCValue(int bpc) { + return bpc == 1 || bpc == 2 || bpc == 4 || bpc == 8 || bpc == 16; +} + +template +T ClampValue(T value, T max_value) { + value = std::min(value, max_value); + value = std::max(0, value); + return value; +} + +// Wrapper class to use with std::unique_ptr for CJPX_Decoder. +class JpxBitMapContext { + public: + explicit JpxBitMapContext(ICodec_JpxModule* jpx_module) + : jpx_module_(jpx_module), decoder_(nullptr) {} + + ~JpxBitMapContext() { jpx_module_->DestroyDecoder(decoder_); } + + // Takes ownership of |decoder|. + void set_decoder(CJPX_Decoder* decoder) { decoder_ = decoder; } + + CJPX_Decoder* decoder() { return decoder_; } + + private: + ICodec_JpxModule* const jpx_module_; // Weak pointer. + CJPX_Decoder* decoder_; // Decoder, owned. + + // Disallow evil constructors + JpxBitMapContext(const JpxBitMapContext&); + void operator=(const JpxBitMapContext&); +}; + +const int kMaxImageDimension = 0x01FFFF; + +} // namespace + +CFX_DIBSource* CPDF_Image::LoadDIBSource(CFX_DIBSource** ppMask, + FX_DWORD* pMatteColor, + FX_BOOL bStdCS, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask) const { + std::unique_ptr source(new CPDF_DIBSource); + if (source->Load(m_pDocument, m_pStream, + reinterpret_cast(ppMask), pMatteColor, + nullptr, nullptr, bStdCS, GroupFamily, bLoadMask)) { + return source.release(); + } + return nullptr; +} + +CFX_DIBSource* CPDF_Image::DetachBitmap() { + CFX_DIBSource* pBitmap = m_pDIBSource; + m_pDIBSource = nullptr; + return pBitmap; +} + +CFX_DIBSource* CPDF_Image::DetachMask() { + CFX_DIBSource* pBitmap = m_pMask; + m_pMask = nullptr; + return pBitmap; +} + +FX_BOOL CPDF_Image::StartLoadDIBSource(CPDF_Dictionary* pFormResource, + CPDF_Dictionary* pPageResource, + FX_BOOL bStdCS, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask) { + std::unique_ptr source(new CPDF_DIBSource); + int ret = + source->StartLoadDIBSource(m_pDocument, m_pStream, TRUE, pFormResource, + pPageResource, bStdCS, GroupFamily, bLoadMask); + if (ret == 2) { + m_pDIBSource = source.release(); + return TRUE; + } + if (!ret) { + m_pDIBSource = nullptr; + return FALSE; + } + m_pMask = source->DetachMask(); + m_MatteColor = source->GetMatteColor(); + m_pDIBSource = source.release(); + return FALSE; +} + +FX_BOOL CPDF_Image::Continue(IFX_Pause* pPause) { + CPDF_DIBSource* pSource = static_cast(m_pDIBSource); + int ret = pSource->ContinueLoadDIBSource(pPause); + if (ret == 2) { + return TRUE; + } + if (!ret) { + delete m_pDIBSource; + m_pDIBSource = nullptr; + return FALSE; + } + m_pMask = pSource->DetachMask(); + m_MatteColor = pSource->GetMatteColor(); + return FALSE; +} + +CPDF_DIBSource::CPDF_DIBSource() + : m_pDocument(nullptr), + m_pStream(nullptr), + m_pDict(nullptr), + m_pColorSpace(nullptr), + m_Family(0), + m_bpc(0), + m_bpc_orig(0), + m_nComponents(0), + m_GroupFamily(0), + m_MatteColor(0), + m_bLoadMask(FALSE), + m_bDefaultDecode(TRUE), + m_bImageMask(FALSE), + m_bDoBpcCheck(TRUE), + m_bColorKey(FALSE), + m_bHasMask(FALSE), + m_bStdCS(FALSE), + m_pCompData(nullptr), + m_pLineBuf(nullptr), + m_pMaskedLine(nullptr), + m_pJbig2Context(nullptr), + m_pMask(nullptr), + m_pMaskStream(nullptr), + m_Status(0) {} + +CPDF_DIBSource::~CPDF_DIBSource() { + FX_Free(m_pMaskedLine); + FX_Free(m_pLineBuf); + m_pCachedBitmap.reset(); + FX_Free(m_pCompData); + CPDF_ColorSpace* pCS = m_pColorSpace; + if (pCS && m_pDocument) { + m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray()); + } + if (m_pJbig2Context) { + ICodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module(); + pJbig2Module->DestroyJbig2Context(m_pJbig2Context); + } +} + +CFX_DIBitmap* CPDF_DIBSource::GetBitmap() const { + return m_pCachedBitmap ? m_pCachedBitmap.get() : Clone(); +} + +void CPDF_DIBSource::ReleaseBitmap(CFX_DIBitmap* pBitmap) const { + if (pBitmap && pBitmap != m_pCachedBitmap.get()) { + delete pBitmap; + } +} + +FX_BOOL CPDF_DIBSource::Load(CPDF_Document* pDoc, + const CPDF_Stream* pStream, + CPDF_DIBSource** ppMask, + FX_DWORD* pMatteColor, + CPDF_Dictionary* pFormResources, + CPDF_Dictionary* pPageResources, + FX_BOOL bStdCS, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask) { + if (!pStream) { + return FALSE; + } + m_pDocument = pDoc; + m_pDict = pStream->GetDict(); + if (!m_pDict) { + return FALSE; + } + m_pStream = pStream; + m_Width = m_pDict->GetIntegerBy("Width"); + m_Height = m_pDict->GetIntegerBy("Height"); + if (m_Width <= 0 || m_Height <= 0 || m_Width > kMaxImageDimension || + m_Height > kMaxImageDimension) { + return FALSE; + } + m_GroupFamily = GroupFamily; + m_bLoadMask = bLoadMask; + if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? nullptr : pFormResources, + pPageResources)) { + return FALSE; + } + if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) { + return FALSE; + } + FX_SAFE_DWORD src_size = + CalculatePitch8(m_bpc, m_nComponents, m_Width) * m_Height; + if (!src_size.IsValid()) { + return FALSE; + } + m_pStreamAcc.reset(new CPDF_StreamAcc); + m_pStreamAcc->LoadAllData(pStream, FALSE, src_size.ValueOrDie(), TRUE); + if (m_pStreamAcc->GetSize() == 0 || !m_pStreamAcc->GetData()) { + return FALSE; + } + if (!CreateDecoder()) { + return FALSE; + } + if (m_bImageMask) { + m_bpp = 1; + m_bpc = 1; + m_nComponents = 1; + m_AlphaFlag = 1; + } else if (m_bpc * m_nComponents == 1) { + m_bpp = 1; + } else if (m_bpc * m_nComponents <= 8) { + m_bpp = 8; + } else { + m_bpp = 24; + } + FX_SAFE_DWORD pitch = CalculatePitch32(m_bpp, m_Width); + if (!pitch.IsValid()) { + return FALSE; + } + m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie()); + if (m_pColorSpace && bStdCS) { + m_pColorSpace->EnableStdConversion(TRUE); + } + LoadPalette(); + if (m_bColorKey) { + m_bpp = 32; + m_AlphaFlag = 2; + pitch = CalculatePitch32(m_bpp, m_Width); + if (!pitch.IsValid()) { + return FALSE; + } + m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie()); + } + m_Pitch = pitch.ValueOrDie(); + if (ppMask) { + *ppMask = LoadMask(*pMatteColor); + } + if (m_pColorSpace && bStdCS) { + m_pColorSpace->EnableStdConversion(FALSE); + } + return TRUE; +} + +int CPDF_DIBSource::ContinueToLoadMask() { + if (m_bImageMask) { + m_bpp = 1; + m_bpc = 1; + m_nComponents = 1; + m_AlphaFlag = 1; + } else if (m_bpc * m_nComponents == 1) { + m_bpp = 1; + } else if (m_bpc * m_nComponents <= 8) { + m_bpp = 8; + } else { + m_bpp = 24; + } + if (!m_bpc || !m_nComponents) { + return 0; + } + FX_SAFE_DWORD pitch = CalculatePitch32(m_bpp, m_Width); + if (!pitch.IsValid()) { + return 0; + } + m_pLineBuf = FX_Alloc(uint8_t, pitch.ValueOrDie()); + if (m_pColorSpace && m_bStdCS) { + m_pColorSpace->EnableStdConversion(TRUE); + } + LoadPalette(); + if (m_bColorKey) { + m_bpp = 32; + m_AlphaFlag = 2; + pitch = CalculatePitch32(m_bpp, m_Width); + if (!pitch.IsValid()) { + return 0; + } + m_pMaskedLine = FX_Alloc(uint8_t, pitch.ValueOrDie()); + } + m_Pitch = pitch.ValueOrDie(); + return 1; +} + +int CPDF_DIBSource::StartLoadDIBSource(CPDF_Document* pDoc, + const CPDF_Stream* pStream, + FX_BOOL bHasMask, + CPDF_Dictionary* pFormResources, + CPDF_Dictionary* pPageResources, + FX_BOOL bStdCS, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask) { + if (!pStream) { + return 0; + } + m_pDocument = pDoc; + m_pDict = pStream->GetDict(); + m_pStream = pStream; + m_bStdCS = bStdCS; + m_bHasMask = bHasMask; + m_Width = m_pDict->GetIntegerBy("Width"); + m_Height = m_pDict->GetIntegerBy("Height"); + if (m_Width <= 0 || m_Height <= 0 || m_Width > kMaxImageDimension || + m_Height > kMaxImageDimension) { + return 0; + } + m_GroupFamily = GroupFamily; + m_bLoadMask = bLoadMask; + if (!LoadColorInfo(m_pStream->GetObjNum() != 0 ? nullptr : pFormResources, + pPageResources)) { + return 0; + } + if (m_bDoBpcCheck && (m_bpc == 0 || m_nComponents == 0)) { + return 0; + } + FX_SAFE_DWORD src_size = + CalculatePitch8(m_bpc, m_nComponents, m_Width) * m_Height; + if (!src_size.IsValid()) { + return 0; + } + m_pStreamAcc.reset(new CPDF_StreamAcc); + m_pStreamAcc->LoadAllData(pStream, FALSE, src_size.ValueOrDie(), TRUE); + if (m_pStreamAcc->GetSize() == 0 || !m_pStreamAcc->GetData()) { + return 0; + } + int ret = CreateDecoder(); + if (!ret) + return ret; + + if (ret != 1) { + if (!ContinueToLoadMask()) { + return 0; + } + if (m_bHasMask) { + StratLoadMask(); + } + return ret; + } + if (!ContinueToLoadMask()) { + return 0; + } + if (m_bHasMask) { + ret = StratLoadMask(); + } + if (ret == 2) { + return ret; + } + if (m_pColorSpace && m_bStdCS) { + m_pColorSpace->EnableStdConversion(FALSE); + } + return ret; +} + +int CPDF_DIBSource::ContinueLoadDIBSource(IFX_Pause* pPause) { + FXCODEC_STATUS ret; + if (m_Status == 1) { + const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); + if (decoder == "JPXDecode") { + return 0; + } + ICodec_Jbig2Module* pJbig2Module = CPDF_ModuleMgr::Get()->GetJbig2Module(); + if (!m_pJbig2Context) { + m_pJbig2Context = pJbig2Module->CreateJbig2Context(); + if (m_pStreamAcc->GetImageParam()) { + CPDF_Stream* pGlobals = + m_pStreamAcc->GetImageParam()->GetStreamBy("JBIG2Globals"); + if (pGlobals) { + m_pGlobalStream.reset(new CPDF_StreamAcc); + m_pGlobalStream->LoadAllData(pGlobals, FALSE); + } + } + ret = pJbig2Module->StartDecode( + m_pJbig2Context, m_pDocument, m_Width, m_Height, m_pStreamAcc.get(), + m_pGlobalStream.get(), m_pCachedBitmap->GetBuffer(), + m_pCachedBitmap->GetPitch(), pPause); + if (ret < 0) { + m_pCachedBitmap.reset(); + m_pGlobalStream.reset(); + pJbig2Module->DestroyJbig2Context(m_pJbig2Context); + m_pJbig2Context = nullptr; + return 0; + } + if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) { + return 2; + } + int ret1 = 1; + if (m_bHasMask) { + ret1 = ContinueLoadMaskDIB(pPause); + m_Status = 2; + } + if (ret1 == 2) { + return ret1; + } + if (m_pColorSpace && m_bStdCS) { + m_pColorSpace->EnableStdConversion(FALSE); + } + return ret1; + } + FXCODEC_STATUS ret = pJbig2Module->ContinueDecode(m_pJbig2Context, pPause); + if (ret < 0) { + m_pCachedBitmap.reset(); + m_pGlobalStream.reset(); + pJbig2Module->DestroyJbig2Context(m_pJbig2Context); + m_pJbig2Context = nullptr; + return 0; + } + if (ret == FXCODEC_STATUS_DECODE_TOBECONTINUE) { + return 2; + } + int ret1 = 1; + if (m_bHasMask) { + ret1 = ContinueLoadMaskDIB(pPause); + m_Status = 2; + } + if (ret1 == 2) { + return ret1; + } + if (m_pColorSpace && m_bStdCS) { + m_pColorSpace->EnableStdConversion(FALSE); + } + return ret1; + } + if (m_Status == 2) { + return ContinueLoadMaskDIB(pPause); + } + return 0; +} + +bool CPDF_DIBSource::LoadColorInfo(const CPDF_Dictionary* pFormResources, + const CPDF_Dictionary* pPageResources) { + m_bpc_orig = m_pDict->GetIntegerBy("BitsPerComponent"); + if (m_pDict->GetIntegerBy("ImageMask")) + m_bImageMask = TRUE; + + if (m_bImageMask || !m_pDict->KeyExist("ColorSpace")) { + if (!m_bImageMask) { + CPDF_Object* pFilter = m_pDict->GetElementValue("Filter"); + if (pFilter) { + CFX_ByteString filter; + if (pFilter->IsName()) { + filter = pFilter->GetString(); + } else if (CPDF_Array* pArray = pFilter->AsArray()) { + filter = pArray->GetStringAt(pArray->GetCount() - 1); + } + + if (filter == "JPXDecode") { + m_bDoBpcCheck = FALSE; + return true; + } + } + } + m_bImageMask = TRUE; + m_bpc = m_nComponents = 1; + CPDF_Array* pDecode = m_pDict->GetArrayBy("Decode"); + m_bDefaultDecode = !pDecode || !pDecode->GetIntegerAt(0); + return true; + } + + CPDF_Object* pCSObj = m_pDict->GetElementValue("ColorSpace"); + if (!pCSObj) + return false; + + CPDF_DocPageData* pDocPageData = m_pDocument->GetPageData(); + if (pFormResources) + m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pFormResources); + if (!m_pColorSpace) + m_pColorSpace = pDocPageData->GetColorSpace(pCSObj, pPageResources); + if (!m_pColorSpace) + return false; + + m_Family = m_pColorSpace->GetFamily(); + m_nComponents = m_pColorSpace->CountComponents(); + if (m_Family == PDFCS_ICCBASED && pCSObj->IsName()) { + CFX_ByteString cs = pCSObj->GetString(); + if (cs == "DeviceGray") { + m_nComponents = 1; + } else if (cs == "DeviceRGB") { + m_nComponents = 3; + } else if (cs == "DeviceCMYK") { + m_nComponents = 4; + } + } + ValidateDictParam(); + m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey); + return !!m_pCompData; +} + +DIB_COMP_DATA* CPDF_DIBSource::GetDecodeAndMaskArray(FX_BOOL& bDefaultDecode, + FX_BOOL& bColorKey) { + if (!m_pColorSpace) { + return nullptr; + } + DIB_COMP_DATA* pCompData = FX_Alloc(DIB_COMP_DATA, m_nComponents); + int max_data = (1 << m_bpc) - 1; + CPDF_Array* pDecode = m_pDict->GetArrayBy("Decode"); + if (pDecode) { + for (FX_DWORD i = 0; i < m_nComponents; i++) { + pCompData[i].m_DecodeMin = pDecode->GetNumberAt(i * 2); + FX_FLOAT max = pDecode->GetNumberAt(i * 2 + 1); + pCompData[i].m_DecodeStep = (max - pCompData[i].m_DecodeMin) / max_data; + FX_FLOAT def_value; + FX_FLOAT def_min; + FX_FLOAT def_max; + m_pColorSpace->GetDefaultValue(i, def_value, def_min, def_max); + if (m_Family == PDFCS_INDEXED) { + def_max = max_data; + } + if (def_min != pCompData[i].m_DecodeMin || def_max != max) { + bDefaultDecode = FALSE; + } + } + } else { + for (FX_DWORD i = 0; i < m_nComponents; i++) { + FX_FLOAT def_value; + m_pColorSpace->GetDefaultValue(i, def_value, pCompData[i].m_DecodeMin, + pCompData[i].m_DecodeStep); + if (m_Family == PDFCS_INDEXED) { + pCompData[i].m_DecodeStep = max_data; + } + pCompData[i].m_DecodeStep = + (pCompData[i].m_DecodeStep - pCompData[i].m_DecodeMin) / max_data; + } + } + if (!m_pDict->KeyExist("SMask")) { + CPDF_Object* pMask = m_pDict->GetElementValue("Mask"); + if (!pMask) { + return pCompData; + } + if (CPDF_Array* pArray = pMask->AsArray()) { + if (pArray->GetCount() >= m_nComponents * 2) { + for (FX_DWORD i = 0; i < m_nComponents; i++) { + int min_num = pArray->GetIntegerAt(i * 2); + int max_num = pArray->GetIntegerAt(i * 2 + 1); + pCompData[i].m_ColorKeyMin = std::max(min_num, 0); + pCompData[i].m_ColorKeyMax = std::min(max_num, max_data); + } + } + bColorKey = TRUE; + } + } + return pCompData; +} + +ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder( + const uint8_t* src_buf, + FX_DWORD src_size, + int width, + int height, + const CPDF_Dictionary* pParams); + +ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder( + const uint8_t* src_buf, + FX_DWORD src_size, + int width, + int height, + int nComps, + int bpc, + const CPDF_Dictionary* pParams); + +int CPDF_DIBSource::CreateDecoder() { + const CFX_ByteString& decoder = m_pStreamAcc->GetImageDecoder(); + if (decoder.IsEmpty()) { + return 1; + } + if (m_bDoBpcCheck && m_bpc == 0) { + return 0; + } + const uint8_t* src_data = m_pStreamAcc->GetData(); + FX_DWORD src_size = m_pStreamAcc->GetSize(); + const CPDF_Dictionary* pParams = m_pStreamAcc->GetImageParam(); + if (decoder == "CCITTFaxDecode") { + m_pDecoder.reset(FPDFAPI_CreateFaxDecoder(src_data, src_size, m_Width, + m_Height, pParams)); + } else if (decoder == "DCTDecode") { + m_pDecoder.reset(CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder( + src_data, src_size, m_Width, m_Height, m_nComponents, + pParams ? pParams->GetIntegerBy("ColorTransform", 1) : 1)); + if (!m_pDecoder) { + FX_BOOL bTransform = FALSE; + int comps; + int bpc; + ICodec_JpegModule* pJpegModule = CPDF_ModuleMgr::Get()->GetJpegModule(); + if (pJpegModule->LoadInfo(src_data, src_size, m_Width, m_Height, comps, + bpc, bTransform)) { + if (m_nComponents != static_cast(comps)) { + FX_Free(m_pCompData); + m_nComponents = static_cast(comps); + if (m_Family == PDFCS_LAB && m_nComponents != 3) { + m_pCompData = nullptr; + return 0; + } + m_pCompData = GetDecodeAndMaskArray(m_bDefaultDecode, m_bColorKey); + if (!m_pCompData) { + return 0; + } + } + m_bpc = bpc; + m_pDecoder.reset(CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder( + src_data, src_size, m_Width, m_Height, m_nComponents, bTransform)); + } + } + } else if (decoder == "FlateDecode") { + m_pDecoder.reset(FPDFAPI_CreateFlateDecoder( + src_data, src_size, m_Width, m_Height, m_nComponents, m_bpc, pParams)); + } else if (decoder == "JPXDecode") { + LoadJpxBitmap(); + return m_pCachedBitmap ? 1 : 0; + } else if (decoder == "JBIG2Decode") { + m_pCachedBitmap.reset(new CFX_DIBitmap); + if (!m_pCachedBitmap->Create( + m_Width, m_Height, m_bImageMask ? FXDIB_1bppMask : FXDIB_1bppRgb)) { + m_pCachedBitmap.reset(); + return 0; + } + m_Status = 1; + return 2; + } else if (decoder == "RunLengthDecode") { + m_pDecoder.reset(CPDF_ModuleMgr::Get() + ->GetCodecModule() + ->GetBasicModule() + ->CreateRunLengthDecoder(src_data, src_size, m_Width, + m_Height, m_nComponents, + m_bpc)); + } + if (!m_pDecoder) + return 0; + + FX_SAFE_DWORD requested_pitch = + CalculatePitch8(m_bpc, m_nComponents, m_Width); + if (!requested_pitch.IsValid()) { + return 0; + } + FX_SAFE_DWORD provided_pitch = CalculatePitch8( + m_pDecoder->GetBPC(), m_pDecoder->CountComps(), m_pDecoder->GetWidth()); + if (!provided_pitch.IsValid()) { + return 0; + } + if (provided_pitch.ValueOrDie() < requested_pitch.ValueOrDie()) { + return 0; + } + return 1; +} + +void CPDF_DIBSource::LoadJpxBitmap() { + ICodec_JpxModule* pJpxModule = CPDF_ModuleMgr::Get()->GetJpxModule(); + if (!pJpxModule) + return; + + std::unique_ptr context(new JpxBitMapContext(pJpxModule)); + context->set_decoder(pJpxModule->CreateDecoder( + m_pStreamAcc->GetData(), m_pStreamAcc->GetSize(), m_pColorSpace)); + if (!context->decoder()) + return; + + FX_DWORD width = 0; + FX_DWORD height = 0; + FX_DWORD components = 0; + pJpxModule->GetImageInfo(context->decoder(), &width, &height, &components); + if (static_cast(width) < m_Width || static_cast(height) < m_Height) + return; + + FX_BOOL bSwapRGB = FALSE; + if (m_pColorSpace) { + if (components != m_pColorSpace->CountComponents()) + return; + + if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB)) { + bSwapRGB = TRUE; + m_pColorSpace = nullptr; + } + } else { + if (components == 3) { + bSwapRGB = TRUE; + } else if (components == 4) { + m_pColorSpace = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICECMYK); + } + m_nComponents = components; + } + + FXDIB_Format format; + if (components == 1) { + format = FXDIB_8bppRgb; + } else if (components <= 3) { + format = FXDIB_Rgb; + } else if (components == 4) { + format = FXDIB_Rgb32; + } else { + width = (width * components + 2) / 3; + format = FXDIB_Rgb; + } + + m_pCachedBitmap.reset(new CFX_DIBitmap); + if (!m_pCachedBitmap->Create(width, height, format)) { + m_pCachedBitmap.reset(); + return; + } + m_pCachedBitmap->Clear(0xFFFFFFFF); + std::vector output_offsets(components); + for (FX_DWORD i = 0; i < components; ++i) + output_offsets[i] = i; + if (bSwapRGB) { + output_offsets[0] = 2; + output_offsets[2] = 0; + } + if (!pJpxModule->Decode(context->decoder(), m_pCachedBitmap->GetBuffer(), + m_pCachedBitmap->GetPitch(), output_offsets)) { + m_pCachedBitmap.reset(); + return; + } + if (m_pColorSpace && m_pColorSpace->GetFamily() == PDFCS_INDEXED && + m_bpc < 8) { + int scale = 8 - m_bpc; + for (FX_DWORD row = 0; row < height; ++row) { + uint8_t* scanline = + const_cast(m_pCachedBitmap->GetScanline(row)); + for (FX_DWORD col = 0; col < width; ++col) { + *scanline = (*scanline) >> scale; + ++scanline; + } + } + } + m_bpc = 8; +} + +CPDF_DIBSource* CPDF_DIBSource::LoadMask(FX_DWORD& MatteColor) { + MatteColor = 0xFFFFFFFF; + CPDF_Stream* pSoftMask = m_pDict->GetStreamBy("SMask"); + if (pSoftMask) { + CPDF_Array* pMatte = pSoftMask->GetDict()->GetArrayBy("Matte"); + if (pMatte && m_pColorSpace && + m_pColorSpace->CountComponents() <= m_nComponents) { + std::vector colors(m_nComponents); + for (FX_DWORD i = 0; i < m_nComponents; i++) { + colors[i] = pMatte->GetFloatAt(i); + } + FX_FLOAT R, G, B; + m_pColorSpace->GetRGB(colors.data(), R, G, B); + MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255), + FXSYS_round(B * 255)); + } + return LoadMaskDIB(pSoftMask); + } + + if (CPDF_Stream* pStream = ToStream(m_pDict->GetElementValue("Mask"))) + return LoadMaskDIB(pStream); + + return nullptr; +} + +int CPDF_DIBSource::StratLoadMask() { + m_MatteColor = 0XFFFFFFFF; + m_pMaskStream = m_pDict->GetStreamBy("SMask"); + if (m_pMaskStream) { + CPDF_Array* pMatte = m_pMaskStream->GetDict()->GetArrayBy("Matte"); + if (pMatte && m_pColorSpace && + m_pColorSpace->CountComponents() <= m_nComponents) { + FX_FLOAT R, G, B; + std::vector colors(m_nComponents); + for (FX_DWORD i = 0; i < m_nComponents; i++) { + colors[i] = pMatte->GetFloatAt(i); + } + m_pColorSpace->GetRGB(colors.data(), R, G, B); + m_MatteColor = FXARGB_MAKE(0, FXSYS_round(R * 255), FXSYS_round(G * 255), + FXSYS_round(B * 255)); + } + return StartLoadMaskDIB(); + } + + m_pMaskStream = ToStream(m_pDict->GetElementValue("Mask")); + return m_pMaskStream ? StartLoadMaskDIB() : 1; +} + +int CPDF_DIBSource::ContinueLoadMaskDIB(IFX_Pause* pPause) { + if (!m_pMask) { + return 1; + } + int ret = m_pMask->ContinueLoadDIBSource(pPause); + if (ret == 2) { + return ret; + } + if (m_pColorSpace && m_bStdCS) { + m_pColorSpace->EnableStdConversion(FALSE); + } + if (!ret) { + delete m_pMask; + m_pMask = nullptr; + return ret; + } + return 1; +} + +CPDF_DIBSource* CPDF_DIBSource::DetachMask() { + CPDF_DIBSource* pDIBSource = m_pMask; + m_pMask = nullptr; + return pDIBSource; +} + +CPDF_DIBSource* CPDF_DIBSource::LoadMaskDIB(CPDF_Stream* pMask) { + CPDF_DIBSource* pMaskSource = new CPDF_DIBSource; + if (!pMaskSource->Load(m_pDocument, pMask, nullptr, nullptr, nullptr, nullptr, + TRUE)) { + delete pMaskSource; + return nullptr; + } + return pMaskSource; +} + +int CPDF_DIBSource::StartLoadMaskDIB() { + m_pMask = new CPDF_DIBSource; + int ret = m_pMask->StartLoadDIBSource(m_pDocument, m_pMaskStream, FALSE, + nullptr, nullptr, TRUE); + if (ret == 2) { + if (m_Status == 0) + m_Status = 2; + return 2; + } + if (!ret) { + delete m_pMask; + m_pMask = nullptr; + return 1; + } + return 1; +} + +void CPDF_DIBSource::LoadPalette() { + if (m_bpc == 0) { + return; + } + if (m_bpc * m_nComponents > 8) { + return; + } + if (!m_pColorSpace) { + return; + } + if (m_bpc * m_nComponents == 1) { + if (m_bDefaultDecode && + (m_Family == PDFCS_DEVICEGRAY || m_Family == PDFCS_DEVICERGB)) { + return; + } + if (m_pColorSpace->CountComponents() > 3) { + return; + } + FX_FLOAT color_values[3]; + color_values[0] = m_pCompData[0].m_DecodeMin; + color_values[1] = color_values[2] = color_values[0]; + FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; + m_pColorSpace->GetRGB(color_values, R, G, B); + FX_ARGB argb0 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), + FXSYS_round(B * 255)); + color_values[0] += m_pCompData[0].m_DecodeStep; + color_values[1] += m_pCompData[0].m_DecodeStep; + color_values[2] += m_pCompData[0].m_DecodeStep; + m_pColorSpace->GetRGB(color_values, R, G, B); + FX_ARGB argb1 = ArgbEncode(255, FXSYS_round(R * 255), FXSYS_round(G * 255), + FXSYS_round(B * 255)); + if (argb0 != 0xFF000000 || argb1 != 0xFFFFFFFF) { + SetPaletteArgb(0, argb0); + SetPaletteArgb(1, argb1); + } + return; + } + if (m_pColorSpace == CPDF_ColorSpace::GetStockCS(PDFCS_DEVICEGRAY) && + m_bpc == 8 && m_bDefaultDecode) { + } else { + int palette_count = 1 << (m_bpc * m_nComponents); + CFX_FixedBufGrow color_values(m_nComponents); + FX_FLOAT* color_value = color_values; + for (int i = 0; i < palette_count; i++) { + int color_data = i; + for (FX_DWORD j = 0; j < m_nComponents; j++) { + int encoded_component = color_data % (1 << m_bpc); + color_data /= 1 << m_bpc; + color_value[j] = m_pCompData[j].m_DecodeMin + + m_pCompData[j].m_DecodeStep * encoded_component; + } + FX_FLOAT R = 0, G = 0, B = 0; + if (m_nComponents == 1 && m_Family == PDFCS_ICCBASED && + m_pColorSpace->CountComponents() > 1) { + int nComponents = m_pColorSpace->CountComponents(); + std::vector temp_buf(nComponents); + for (int i = 0; i < nComponents; i++) { + temp_buf[i] = *color_value; + } + m_pColorSpace->GetRGB(temp_buf.data(), R, G, B); + } else { + m_pColorSpace->GetRGB(color_value, R, G, B); + } + SetPaletteArgb(i, ArgbEncode(255, FXSYS_round(R * 255), + FXSYS_round(G * 255), FXSYS_round(B * 255))); + } + } +} + +void CPDF_DIBSource::ValidateDictParam() { + m_bpc = m_bpc_orig; + CPDF_Object* pFilter = m_pDict->GetElementValue("Filter"); + if (pFilter) { + if (pFilter->IsName()) { + CFX_ByteString filter = pFilter->GetString(); + if (filter == "CCITTFaxDecode" || filter == "JBIG2Decode") { + m_bpc = 1; + m_nComponents = 1; + } else if (filter == "RunLengthDecode") { + if (m_bpc != 1) { + m_bpc = 8; + } + } else if (filter == "DCTDecode") { + m_bpc = 8; + } + } else if (CPDF_Array* pArray = pFilter->AsArray()) { + CFX_ByteString filter = pArray->GetStringAt(pArray->GetCount() - 1); + if (filter == "CCITTFaxDecode" || filter == "JBIG2Decode") { + m_bpc = 1; + m_nComponents = 1; + } else if (filter == "DCTDecode") { + // Previously, filter == "RunLengthDecode" was checked in the "if" + // statement as well, but too many documents don't conform to it. + m_bpc = 8; + } + } + } + + if (!IsAllowedBPCValue(m_bpc)) + m_bpc = 0; +} + +void CPDF_DIBSource::TranslateScanline24bpp(uint8_t* dest_scan, + const uint8_t* src_scan) const { + if (m_bpc == 0) { + return; + } + unsigned int max_data = (1 << m_bpc) - 1; + if (m_bDefaultDecode) { + if (m_Family == PDFCS_DEVICERGB || m_Family == PDFCS_CALRGB) { + const uint8_t* src_pos = src_scan; + switch (m_bpc) { + case 16: + for (int col = 0; col < m_Width; col++) { + *dest_scan++ = src_pos[4]; + *dest_scan++ = src_pos[2]; + *dest_scan++ = *src_pos; + src_pos += 6; + } + break; + case 8: + for (int column = 0; column < m_Width; column++) { + *dest_scan++ = src_pos[2]; + *dest_scan++ = src_pos[1]; + *dest_scan++ = *src_pos; + src_pos += 3; + } + break; + default: + uint64_t src_bit_pos = 0; + size_t dest_byte_pos = 0; + for (int column = 0; column < m_Width; column++) { + unsigned int R = GetBits8(src_scan, src_bit_pos, m_bpc); + src_bit_pos += m_bpc; + unsigned int G = GetBits8(src_scan, src_bit_pos, m_bpc); + src_bit_pos += m_bpc; + unsigned int B = GetBits8(src_scan, src_bit_pos, m_bpc); + src_bit_pos += m_bpc; + R = std::min(R, max_data); + G = std::min(G, max_data); + B = std::min(B, max_data); + dest_scan[dest_byte_pos] = B * 255 / max_data; + dest_scan[dest_byte_pos + 1] = G * 255 / max_data; + dest_scan[dest_byte_pos + 2] = R * 255 / max_data; + dest_byte_pos += 3; + } + break; + } + return; + } + if (m_bpc == 8) { + if (m_nComponents == m_pColorSpace->CountComponents()) + m_pColorSpace->TranslateImageLine(dest_scan, src_scan, m_Width, m_Width, + m_Height, TransMask()); + return; + } + } + CFX_FixedBufGrow color_values1(m_nComponents); + FX_FLOAT* color_values = color_values1; + FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; + if (m_bpc == 8) { + uint64_t src_byte_pos = 0; + size_t dest_byte_pos = 0; + for (int column = 0; column < m_Width; column++) { + for (FX_DWORD color = 0; color < m_nComponents; color++) { + uint8_t data = src_scan[src_byte_pos++]; + color_values[color] = m_pCompData[color].m_DecodeMin + + m_pCompData[color].m_DecodeStep * data; + } + if (TransMask()) { + FX_FLOAT k = 1.0f - color_values[3]; + R = (1.0f - color_values[0]) * k; + G = (1.0f - color_values[1]) * k; + B = (1.0f - color_values[2]) * k; + } else { + m_pColorSpace->GetRGB(color_values, R, G, B); + } + R = ClampValue(R, 1.0f); + G = ClampValue(G, 1.0f); + B = ClampValue(B, 1.0f); + dest_scan[dest_byte_pos] = static_cast(B * 255); + dest_scan[dest_byte_pos + 1] = static_cast(G * 255); + dest_scan[dest_byte_pos + 2] = static_cast(R * 255); + dest_byte_pos += 3; + } + } else { + uint64_t src_bit_pos = 0; + size_t dest_byte_pos = 0; + for (int column = 0; column < m_Width; column++) { + for (FX_DWORD color = 0; color < m_nComponents; color++) { + unsigned int data = GetBits8(src_scan, src_bit_pos, m_bpc); + color_values[color] = m_pCompData[color].m_DecodeMin + + m_pCompData[color].m_DecodeStep * data; + src_bit_pos += m_bpc; + } + if (TransMask()) { + FX_FLOAT k = 1.0f - color_values[3]; + R = (1.0f - color_values[0]) * k; + G = (1.0f - color_values[1]) * k; + B = (1.0f - color_values[2]) * k; + } else { + m_pColorSpace->GetRGB(color_values, R, G, B); + } + R = ClampValue(R, 1.0f); + G = ClampValue(G, 1.0f); + B = ClampValue(B, 1.0f); + dest_scan[dest_byte_pos] = static_cast(B * 255); + dest_scan[dest_byte_pos + 1] = static_cast(G * 255); + dest_scan[dest_byte_pos + 2] = static_cast(R * 255); + dest_byte_pos += 3; + } + } +} + +uint8_t* CPDF_DIBSource::GetBuffer() const { + return m_pCachedBitmap ? m_pCachedBitmap->GetBuffer() : nullptr; +} + +const uint8_t* CPDF_DIBSource::GetScanline(int line) const { + if (m_bpc == 0) { + return nullptr; + } + FX_SAFE_DWORD src_pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width); + if (!src_pitch.IsValid()) + return nullptr; + FX_DWORD src_pitch_value = src_pitch.ValueOrDie(); + const uint8_t* pSrcLine = nullptr; + if (m_pCachedBitmap && src_pitch_value <= m_pCachedBitmap->GetPitch()) { + if (line >= m_pCachedBitmap->GetHeight()) { + line = m_pCachedBitmap->GetHeight() - 1; + } + pSrcLine = m_pCachedBitmap->GetScanline(line); + } else if (m_pDecoder) { + pSrcLine = m_pDecoder->GetScanline(line); + } else { + if (m_pStreamAcc->GetSize() >= (line + 1) * src_pitch_value) { + pSrcLine = m_pStreamAcc->GetData() + line * src_pitch_value; + } + } + if (!pSrcLine) { + uint8_t* pLineBuf = m_pMaskedLine ? m_pMaskedLine : m_pLineBuf; + FXSYS_memset(pLineBuf, 0xFF, m_Pitch); + return pLineBuf; + } + if (m_bpc * m_nComponents == 1) { + if (m_bImageMask && m_bDefaultDecode) { + for (FX_DWORD i = 0; i < src_pitch_value; i++) { + m_pLineBuf[i] = ~pSrcLine[i]; + } + } else if (m_bColorKey) { + FX_DWORD reset_argb, set_argb; + reset_argb = m_pPalette ? m_pPalette[0] : 0xFF000000; + set_argb = m_pPalette ? m_pPalette[1] : 0xFFFFFFFF; + if (m_pCompData[0].m_ColorKeyMin == 0) { + reset_argb = 0; + } + if (m_pCompData[0].m_ColorKeyMax == 1) { + set_argb = 0; + } + set_argb = FXARGB_TODIB(set_argb); + reset_argb = FXARGB_TODIB(reset_argb); + FX_DWORD* dest_scan = reinterpret_cast(m_pMaskedLine); + for (int col = 0; col < m_Width; col++) { + if (pSrcLine[col / 8] & (1 << (7 - col % 8))) { + *dest_scan = set_argb; + } else { + *dest_scan = reset_argb; + } + dest_scan++; + } + return m_pMaskedLine; + } else { + FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value); + } + return m_pLineBuf; + } + if (m_bpc * m_nComponents <= 8) { + if (m_bpc == 8) { + FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value); + } else { + uint64_t src_bit_pos = 0; + for (int col = 0; col < m_Width; col++) { + unsigned int color_index = 0; + for (FX_DWORD color = 0; color < m_nComponents; color++) { + unsigned int data = GetBits8(pSrcLine, src_bit_pos, m_bpc); + color_index |= data << (color * m_bpc); + src_bit_pos += m_bpc; + } + m_pLineBuf[col] = color_index; + } + } + if (m_bColorKey) { + uint8_t* pDestPixel = m_pMaskedLine; + const uint8_t* pSrcPixel = m_pLineBuf; + for (int col = 0; col < m_Width; col++) { + uint8_t index = *pSrcPixel++; + if (m_pPalette) { + *pDestPixel++ = FXARGB_B(m_pPalette[index]); + *pDestPixel++ = FXARGB_G(m_pPalette[index]); + *pDestPixel++ = FXARGB_R(m_pPalette[index]); + } else { + *pDestPixel++ = index; + *pDestPixel++ = index; + *pDestPixel++ = index; + } + *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin || + index > m_pCompData[0].m_ColorKeyMax) + ? 0xFF + : 0; + pDestPixel++; + } + return m_pMaskedLine; + } + return m_pLineBuf; + } + if (m_bColorKey) { + if (m_nComponents == 3 && m_bpc == 8) { + uint8_t* alpha_channel = m_pMaskedLine + 3; + for (int col = 0; col < m_Width; col++) { + const uint8_t* pPixel = pSrcLine + col * 3; + alpha_channel[col * 4] = (pPixel[0] < m_pCompData[0].m_ColorKeyMin || + pPixel[0] > m_pCompData[0].m_ColorKeyMax || + pPixel[1] < m_pCompData[1].m_ColorKeyMin || + pPixel[1] > m_pCompData[1].m_ColorKeyMax || + pPixel[2] < m_pCompData[2].m_ColorKeyMin || + pPixel[2] > m_pCompData[2].m_ColorKeyMax) + ? 0xFF + : 0; + } + } else { + FXSYS_memset(m_pMaskedLine, 0xFF, m_Pitch); + } + } + if (m_pColorSpace) { + TranslateScanline24bpp(m_pLineBuf, pSrcLine); + pSrcLine = m_pLineBuf; + } + if (m_bColorKey) { + const uint8_t* pSrcPixel = pSrcLine; + uint8_t* pDestPixel = m_pMaskedLine; + for (int col = 0; col < m_Width; col++) { + *pDestPixel++ = *pSrcPixel++; + *pDestPixel++ = *pSrcPixel++; + *pDestPixel++ = *pSrcPixel++; + pDestPixel++; + } + return m_pMaskedLine; + } + return pSrcLine; +} + +FX_BOOL CPDF_DIBSource::SkipToScanline(int line, IFX_Pause* pPause) const { + return m_pDecoder && m_pDecoder->SkipToScanline(line, pPause); +} + +void CPDF_DIBSource::DownSampleScanline(int line, + uint8_t* dest_scan, + int dest_bpp, + int dest_width, + FX_BOOL bFlipX, + int clip_left, + int clip_width) const { + if (line < 0 || !dest_scan || dest_bpp <= 0 || dest_width <= 0 || + clip_left < 0 || clip_width <= 0) { + return; + } + + FX_DWORD src_width = m_Width; + FX_SAFE_DWORD pitch = CalculatePitch8(m_bpc, m_nComponents, m_Width); + if (!pitch.IsValid()) + return; + + const uint8_t* pSrcLine = nullptr; + if (m_pCachedBitmap) { + pSrcLine = m_pCachedBitmap->GetScanline(line); + } else if (m_pDecoder) { + pSrcLine = m_pDecoder->GetScanline(line); + } else { + FX_DWORD src_pitch = pitch.ValueOrDie(); + pitch *= (line + 1); + if (!pitch.IsValid()) { + return; + } + + if (m_pStreamAcc->GetSize() >= pitch.ValueOrDie()) { + pSrcLine = m_pStreamAcc->GetData() + line * src_pitch; + } + } + int orig_Bpp = m_bpc * m_nComponents / 8; + int dest_Bpp = dest_bpp / 8; + if (!pSrcLine) { + FXSYS_memset(dest_scan, 0xFF, dest_Bpp * clip_width); + return; + } + + FX_SAFE_INT32 max_src_x = clip_left; + max_src_x += clip_width - 1; + max_src_x *= src_width; + max_src_x /= dest_width; + if (!max_src_x.IsValid()) + return; + + if (m_bpc * m_nComponents == 1) { + DownSampleScanline1Bit(orig_Bpp, dest_Bpp, src_width, pSrcLine, dest_scan, + dest_width, bFlipX, clip_left, clip_width); + } else if (m_bpc * m_nComponents <= 8) { + DownSampleScanline8Bit(orig_Bpp, dest_Bpp, src_width, pSrcLine, dest_scan, + dest_width, bFlipX, clip_left, clip_width); + } else { + DownSampleScanline32Bit(orig_Bpp, dest_Bpp, src_width, pSrcLine, dest_scan, + dest_width, bFlipX, clip_left, clip_width); + } +} + +void CPDF_DIBSource::DownSampleScanline1Bit(int orig_Bpp, + int dest_Bpp, + FX_DWORD src_width, + const uint8_t* pSrcLine, + uint8_t* dest_scan, + int dest_width, + FX_BOOL bFlipX, + int clip_left, + int clip_width) const { + FX_DWORD set_argb = (FX_DWORD)-1; + FX_DWORD reset_argb = 0; + if (m_bImageMask) { + if (m_bDefaultDecode) { + set_argb = 0; + reset_argb = (FX_DWORD)-1; + } + } else if (m_bColorKey) { + reset_argb = m_pPalette ? m_pPalette[0] : 0xFF000000; + set_argb = m_pPalette ? m_pPalette[1] : 0xFFFFFFFF; + if (m_pCompData[0].m_ColorKeyMin == 0) { + reset_argb = 0; + } + if (m_pCompData[0].m_ColorKeyMax == 1) { + set_argb = 0; + } + set_argb = FXARGB_TODIB(set_argb); + reset_argb = FXARGB_TODIB(reset_argb); + FX_DWORD* dest_scan_dword = reinterpret_cast(dest_scan); + for (int i = 0; i < clip_width; i++) { + FX_DWORD src_x = (clip_left + i) * src_width / dest_width; + if (bFlipX) { + src_x = src_width - src_x - 1; + } + src_x %= src_width; + if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) { + dest_scan_dword[i] = set_argb; + } else { + dest_scan_dword[i] = reset_argb; + } + } + return; + } else { + if (dest_Bpp == 1) { + } else if (m_pPalette) { + reset_argb = m_pPalette[0]; + set_argb = m_pPalette[1]; + } + } + for (int i = 0; i < clip_width; i++) { + FX_DWORD src_x = (clip_left + i) * src_width / dest_width; + if (bFlipX) { + src_x = src_width - src_x - 1; + } + src_x %= src_width; + int dest_pos = i * dest_Bpp; + if (pSrcLine[src_x / 8] & (1 << (7 - src_x % 8))) { + if (dest_Bpp == 1) { + dest_scan[dest_pos] = static_cast(set_argb); + } else if (dest_Bpp == 3) { + dest_scan[dest_pos] = FXARGB_B(set_argb); + dest_scan[dest_pos + 1] = FXARGB_G(set_argb); + dest_scan[dest_pos + 2] = FXARGB_R(set_argb); + } else { + *reinterpret_cast(dest_scan + dest_pos) = set_argb; + } + } else { + if (dest_Bpp == 1) { + dest_scan[dest_pos] = static_cast(reset_argb); + } else if (dest_Bpp == 3) { + dest_scan[dest_pos] = FXARGB_B(reset_argb); + dest_scan[dest_pos + 1] = FXARGB_G(reset_argb); + dest_scan[dest_pos + 2] = FXARGB_R(reset_argb); + } else { + *reinterpret_cast(dest_scan + dest_pos) = reset_argb; + } + } + } +} + +void CPDF_DIBSource::DownSampleScanline8Bit(int orig_Bpp, + int dest_Bpp, + FX_DWORD src_width, + const uint8_t* pSrcLine, + uint8_t* dest_scan, + int dest_width, + FX_BOOL bFlipX, + int clip_left, + int clip_width) const { + if (m_bpc < 8) { + uint64_t src_bit_pos = 0; + for (FX_DWORD col = 0; col < src_width; col++) { + unsigned int color_index = 0; + for (FX_DWORD color = 0; color < m_nComponents; color++) { + unsigned int data = GetBits8(pSrcLine, src_bit_pos, m_bpc); + color_index |= data << (color * m_bpc); + src_bit_pos += m_bpc; + } + m_pLineBuf[col] = color_index; + } + pSrcLine = m_pLineBuf; + } + if (m_bColorKey) { + for (int i = 0; i < clip_width; i++) { + FX_DWORD src_x = (clip_left + i) * src_width / dest_width; + if (bFlipX) { + src_x = src_width - src_x - 1; + } + src_x %= src_width; + uint8_t* pDestPixel = dest_scan + i * 4; + uint8_t index = pSrcLine[src_x]; + if (m_pPalette) { + *pDestPixel++ = FXARGB_B(m_pPalette[index]); + *pDestPixel++ = FXARGB_G(m_pPalette[index]); + *pDestPixel++ = FXARGB_R(m_pPalette[index]); + } else { + *pDestPixel++ = index; + *pDestPixel++ = index; + *pDestPixel++ = index; + } + *pDestPixel = (index < m_pCompData[0].m_ColorKeyMin || + index > m_pCompData[0].m_ColorKeyMax) + ? 0xFF + : 0; + } + return; + } + for (int i = 0; i < clip_width; i++) { + FX_DWORD src_x = (clip_left + i) * src_width / dest_width; + if (bFlipX) { + src_x = src_width - src_x - 1; + } + src_x %= src_width; + uint8_t index = pSrcLine[src_x]; + if (dest_Bpp == 1) { + dest_scan[i] = index; + } else { + int dest_pos = i * dest_Bpp; + FX_ARGB argb = m_pPalette[index]; + dest_scan[dest_pos] = FXARGB_B(argb); + dest_scan[dest_pos + 1] = FXARGB_G(argb); + dest_scan[dest_pos + 2] = FXARGB_R(argb); + } + } +} + +void CPDF_DIBSource::DownSampleScanline32Bit(int orig_Bpp, + int dest_Bpp, + FX_DWORD src_width, + const uint8_t* pSrcLine, + uint8_t* dest_scan, + int dest_width, + FX_BOOL bFlipX, + int clip_left, + int clip_width) const { + // last_src_x used to store the last seen src_x position which should be + // in [0, src_width). Set the initial value to be an invalid src_x value. + FX_DWORD last_src_x = src_width; + FX_ARGB last_argb = FXARGB_MAKE(0xFF, 0xFF, 0xFF, 0xFF); + FX_FLOAT unit_To8Bpc = 255.0f / ((1 << m_bpc) - 1); + for (int i = 0; i < clip_width; i++) { + int dest_x = clip_left + i; + FX_DWORD src_x = (bFlipX ? (dest_width - dest_x - 1) : dest_x) * + (int64_t)src_width / dest_width; + src_x %= src_width; + + uint8_t* pDestPixel = dest_scan + i * dest_Bpp; + FX_ARGB argb; + if (src_x == last_src_x) { + argb = last_argb; + } else { + CFX_FixedBufGrow extracted_components(m_nComponents); + const uint8_t* pSrcPixel = nullptr; + if (m_bpc % 8 != 0) { + // No need to check for 32-bit overflow, as |src_x| is bounded by + // |src_width| and DownSampleScanline() already checked for overflow + // with the pitch calculation. + size_t num_bits = src_x * m_bpc * m_nComponents; + uint64_t src_bit_pos = num_bits % 8; + pSrcPixel = pSrcLine + num_bits / 8; + for (FX_DWORD j = 0; j < m_nComponents; ++j) { + extracted_components[j] = static_cast( + GetBits8(pSrcPixel, src_bit_pos, m_bpc) * unit_To8Bpc); + src_bit_pos += m_bpc; + } + pSrcPixel = extracted_components; + } else { + pSrcPixel = pSrcLine + src_x * orig_Bpp; + if (m_bpc == 16) { + for (FX_DWORD j = 0; j < m_nComponents; ++j) + extracted_components[j] = pSrcPixel[j * 2]; + pSrcPixel = extracted_components; + } + } + + if (m_pColorSpace) { + uint8_t color[4]; + const FX_BOOL bTransMask = TransMask(); + if (m_bDefaultDecode) { + m_pColorSpace->TranslateImageLine(color, pSrcPixel, 1, 0, 0, + bTransMask); + } else { + for (FX_DWORD j = 0; j < m_nComponents; ++j) { + FX_FLOAT component_value = + static_cast(extracted_components[j]); + int color_value = static_cast( + (m_pCompData[j].m_DecodeMin + + m_pCompData[j].m_DecodeStep * component_value) * + 255.0f + + 0.5f); + extracted_components[j] = + color_value > 255 ? 255 : (color_value < 0 ? 0 : color_value); + } + m_pColorSpace->TranslateImageLine(color, extracted_components, 1, 0, + 0, bTransMask); + } + argb = FXARGB_MAKE(0xFF, color[2], color[1], color[0]); + } else { + argb = FXARGB_MAKE(0xFF, pSrcPixel[2], pSrcPixel[1], pSrcPixel[0]); + } + if (m_bColorKey) { + int alpha = 0xFF; + if (m_nComponents == 3 && m_bpc == 8) { + alpha = (pSrcPixel[0] < m_pCompData[0].m_ColorKeyMin || + pSrcPixel[0] > m_pCompData[0].m_ColorKeyMax || + pSrcPixel[1] < m_pCompData[1].m_ColorKeyMin || + pSrcPixel[1] > m_pCompData[1].m_ColorKeyMax || + pSrcPixel[2] < m_pCompData[2].m_ColorKeyMin || + pSrcPixel[2] > m_pCompData[2].m_ColorKeyMax) + ? 0xFF + : 0; + } + argb &= 0xFFFFFF; + argb |= alpha << 24; + } + last_src_x = src_x; + last_argb = argb; + } + if (dest_Bpp == 4) { + *reinterpret_cast(pDestPixel) = FXARGB_TODIB(argb); + } else { + *pDestPixel++ = FXARGB_B(argb); + *pDestPixel++ = FXARGB_G(argb); + *pDestPixel = FXARGB_R(argb); + } + } +} + +FX_BOOL CPDF_DIBSource::TransMask() const { + return m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && + m_Family == PDFCS_DEVICECMYK; +} + +void CPDF_DIBSource::SetDownSampleSize(int dest_width, int dest_height) { + if (m_pDecoder) { + m_pDecoder->DownScale(dest_width, dest_height); + m_Width = m_pDecoder->GetWidth(); + m_Height = m_pDecoder->GetHeight(); + } +} + +void CPDF_DIBSource::ClearImageData() { + if (m_pDecoder) { + m_pDecoder->ClearImageData(); + } +} + +CPDF_ImageLoaderHandle::CPDF_ImageLoaderHandle() { + m_pImageLoader = nullptr; + m_pCache = nullptr; + m_pImage = nullptr; +} + +CPDF_ImageLoaderHandle::~CPDF_ImageLoaderHandle() {} + +FX_BOOL CPDF_ImageLoaderHandle::Start(CPDF_ImageLoader* pImageLoader, + const CPDF_ImageObject* pImage, + CPDF_PageRenderCache* pCache, + FX_BOOL bStdCS, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask, + CPDF_RenderStatus* pRenderStatus, + int32_t nDownsampleWidth, + int32_t nDownsampleHeight) { + m_pImageLoader = pImageLoader; + m_pCache = pCache; + m_pImage = const_cast(pImage); + m_nDownsampleWidth = nDownsampleWidth; + m_nDownsampleHeight = nDownsampleHeight; + FX_BOOL ret; + if (pCache) { + ret = pCache->StartGetCachedBitmap(pImage->m_pImage->GetStream(), bStdCS, + GroupFamily, bLoadMask, pRenderStatus, + m_nDownsampleWidth, m_nDownsampleHeight); + if (!ret) { + m_pImageLoader->m_bCached = TRUE; + m_pImageLoader->m_pBitmap = + pCache->GetCurImageCacheEntry()->DetachBitmap(); + m_pImageLoader->m_pMask = pCache->GetCurImageCacheEntry()->DetachMask(); + m_pImageLoader->m_MatteColor = + pCache->GetCurImageCacheEntry()->m_MatteColor; + } + } else { + ret = pImage->m_pImage->StartLoadDIBSource(pRenderStatus->m_pFormResource, + pRenderStatus->m_pPageResource, + bStdCS, GroupFamily, bLoadMask); + if (!ret) { + m_pImageLoader->m_bCached = FALSE; + m_pImageLoader->m_pBitmap = m_pImage->m_pImage->DetachBitmap(); + m_pImageLoader->m_pMask = m_pImage->m_pImage->DetachMask(); + m_pImageLoader->m_MatteColor = m_pImage->m_pImage->m_MatteColor; + } + } + return ret; +} + +FX_BOOL CPDF_ImageLoaderHandle::Continue(IFX_Pause* pPause) { + FX_BOOL ret; + if (m_pCache) { + ret = m_pCache->Continue(pPause); + if (!ret) { + m_pImageLoader->m_bCached = TRUE; + m_pImageLoader->m_pBitmap = + m_pCache->GetCurImageCacheEntry()->DetachBitmap(); + m_pImageLoader->m_pMask = m_pCache->GetCurImageCacheEntry()->DetachMask(); + m_pImageLoader->m_MatteColor = + m_pCache->GetCurImageCacheEntry()->m_MatteColor; + } + } else { + ret = m_pImage->m_pImage->Continue(pPause); + if (!ret) { + m_pImageLoader->m_bCached = FALSE; + m_pImageLoader->m_pBitmap = m_pImage->m_pImage->DetachBitmap(); + m_pImageLoader->m_pMask = m_pImage->m_pImage->DetachMask(); + m_pImageLoader->m_MatteColor = m_pImage->m_pImage->m_MatteColor; + } + } + return ret; +} + +FX_BOOL CPDF_ImageLoader::Start(const CPDF_ImageObject* pImage, + CPDF_PageRenderCache* pCache, + CPDF_ImageLoaderHandle*& LoadHandle, + FX_BOOL bStdCS, + FX_DWORD GroupFamily, + FX_BOOL bLoadMask, + CPDF_RenderStatus* pRenderStatus, + int32_t nDownsampleWidth, + int32_t nDownsampleHeight) { + m_nDownsampleWidth = nDownsampleWidth; + m_nDownsampleHeight = nDownsampleHeight; + LoadHandle = new CPDF_ImageLoaderHandle; + return LoadHandle->Start(this, pImage, pCache, bStdCS, GroupFamily, bLoadMask, + pRenderStatus, m_nDownsampleWidth, + m_nDownsampleHeight); +} + +FX_BOOL CPDF_ImageLoader::Continue(CPDF_ImageLoaderHandle* LoadHandle, + IFX_Pause* pPause) { + return LoadHandle->Continue(pPause); +} + +CPDF_ImageLoader::~CPDF_ImageLoader() { + if (!m_bCached) { + delete m_pBitmap; + delete m_pMask; + } +} diff --git a/core/fpdfapi/fpdf_render/fpdf_render_loadimage_embeddertest.cpp b/core/fpdfapi/fpdf_render/fpdf_render_loadimage_embeddertest.cpp new file mode 100644 index 0000000000..427abb8e37 --- /dev/null +++ b/core/fpdfapi/fpdf_render/fpdf_render_loadimage_embeddertest.cpp @@ -0,0 +1,29 @@ +// Copyright 2015 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "testing/embedder_test.h" +#include "testing/gtest/include/gtest/gtest.h" + +class FPDFRenderLoadImageEmbeddertest : public EmbedderTest {}; + +TEST_F(FPDFRenderLoadImageEmbeddertest, Bug_554151) { + // Test scanline downsampling with a BitsPerComponent of 4. + // Should not crash. + EXPECT_TRUE(OpenDocument("bug_554151.pdf")); + FPDF_PAGE page = LoadPage(0); + EXPECT_NE(nullptr, page); + FPDF_BITMAP bitmap = RenderPage(page); + FPDFBitmap_Destroy(bitmap); + UnloadPage(page); +} + +TEST_F(FPDFRenderLoadImageEmbeddertest, Bug_557223) { + // Should not crash + EXPECT_TRUE(OpenDocument("bug_557223.pdf")); + FPDF_PAGE page = LoadPage(0); + EXPECT_NE(nullptr, page); + FPDF_BITMAP bitmap = RenderPage(page); + FPDFBitmap_Destroy(bitmap); + UnloadPage(page); +} diff --git a/core/fpdfapi/fpdf_render/fpdf_render_pattern.cpp b/core/fpdfapi/fpdf_render/fpdf_render_pattern.cpp new file mode 100644 index 0000000000..5ad8db1646 --- /dev/null +++ b/core/fpdfapi/fpdf_render/fpdf_render_pattern.cpp @@ -0,0 +1,1207 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "core/fpdfapi/fpdf_render/render_int.h" + +#include "core/fpdfapi/fpdf_page/pageint.h" +#include "core/include/fpdfapi/cpdf_array.h" +#include "core/include/fpdfapi/cpdf_dictionary.h" +#include "core/include/fpdfapi/fpdf_pageobj.h" +#include "core/include/fpdfapi/fpdf_render.h" +#include "core/include/fxge/fx_ge.h" + +#define SHADING_STEPS 256 +static void DrawAxialShading(CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Dictionary* pDict, + CPDF_Function** pFuncs, + int nFuncs, + CPDF_ColorSpace* pCS, + int alpha) { + ASSERT(pBitmap->GetFormat() == FXDIB_Argb); + CPDF_Array* pCoords = pDict->GetArrayBy("Coords"); + if (!pCoords) { + return; + } + FX_FLOAT start_x = pCoords->GetNumberAt(0); + FX_FLOAT start_y = pCoords->GetNumberAt(1); + FX_FLOAT end_x = pCoords->GetNumberAt(2); + FX_FLOAT end_y = pCoords->GetNumberAt(3); + FX_FLOAT t_min = 0, t_max = 1.0f; + CPDF_Array* pArray = pDict->GetArrayBy("Domain"); + if (pArray) { + t_min = pArray->GetNumberAt(0); + t_max = pArray->GetNumberAt(1); + } + FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE; + pArray = pDict->GetArrayBy("Extend"); + if (pArray) { + bStartExtend = pArray->GetIntegerAt(0); + bEndExtend = pArray->GetIntegerAt(1); + } + int width = pBitmap->GetWidth(); + int height = pBitmap->GetHeight(); + FX_FLOAT x_span = end_x - start_x; + FX_FLOAT y_span = end_y - start_y; + FX_FLOAT axis_len_square = (x_span * x_span) + (y_span * y_span); + CFX_Matrix matrix; + matrix.SetReverse(*pObject2Bitmap); + int total_results = 0; + for (int j = 0; j < nFuncs; j++) { + if (pFuncs[j]) { + total_results += pFuncs[j]->CountOutputs(); + } + } + if (pCS->CountComponents() > total_results) { + total_results = pCS->CountComponents(); + } + CFX_FixedBufGrow result_array(total_results); + FX_FLOAT* pResults = result_array; + FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); + FX_DWORD rgb_array[SHADING_STEPS]; + for (int i = 0; i < SHADING_STEPS; i++) { + FX_FLOAT input = (t_max - t_min) * i / SHADING_STEPS + t_min; + int offset = 0; + for (int j = 0; j < nFuncs; j++) { + if (pFuncs[j]) { + int nresults = 0; + if (pFuncs[j]->Call(&input, 1, pResults + offset, nresults)) { + offset += nresults; + } + } + } + FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; + pCS->GetRGB(pResults, R, G, B); + rgb_array[i] = + FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255), + FXSYS_round(G * 255), FXSYS_round(B * 255))); + } + int pitch = pBitmap->GetPitch(); + for (int row = 0; row < height; row++) { + FX_DWORD* dib_buf = (FX_DWORD*)(pBitmap->GetBuffer() + row * pitch); + for (int column = 0; column < width; column++) { + FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row; + matrix.Transform(x, y); + FX_FLOAT scale = (((x - start_x) * x_span) + ((y - start_y) * y_span)) / + axis_len_square; + int index = (int32_t)(scale * (SHADING_STEPS - 1)); + if (index < 0) { + if (!bStartExtend) { + continue; + } + index = 0; + } else if (index >= SHADING_STEPS) { + if (!bEndExtend) { + continue; + } + index = SHADING_STEPS - 1; + } + dib_buf[column] = rgb_array[index]; + } + } +} +static void DrawRadialShading(CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Dictionary* pDict, + CPDF_Function** pFuncs, + int nFuncs, + CPDF_ColorSpace* pCS, + int alpha) { + ASSERT(pBitmap->GetFormat() == FXDIB_Argb); + CPDF_Array* pCoords = pDict->GetArrayBy("Coords"); + if (!pCoords) { + return; + } + FX_FLOAT start_x = pCoords->GetNumberAt(0); + FX_FLOAT start_y = pCoords->GetNumberAt(1); + FX_FLOAT start_r = pCoords->GetNumberAt(2); + FX_FLOAT end_x = pCoords->GetNumberAt(3); + FX_FLOAT end_y = pCoords->GetNumberAt(4); + FX_FLOAT end_r = pCoords->GetNumberAt(5); + CFX_Matrix matrix; + matrix.SetReverse(*pObject2Bitmap); + FX_FLOAT t_min = 0, t_max = 1.0f; + CPDF_Array* pArray = pDict->GetArrayBy("Domain"); + if (pArray) { + t_min = pArray->GetNumberAt(0); + t_max = pArray->GetNumberAt(1); + } + FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE; + pArray = pDict->GetArrayBy("Extend"); + if (pArray) { + bStartExtend = pArray->GetIntegerAt(0); + bEndExtend = pArray->GetIntegerAt(1); + } + int total_results = 0; + for (int j = 0; j < nFuncs; j++) { + if (pFuncs[j]) { + total_results += pFuncs[j]->CountOutputs(); + } + } + if (pCS->CountComponents() > total_results) { + total_results = pCS->CountComponents(); + } + CFX_FixedBufGrow result_array(total_results); + FX_FLOAT* pResults = result_array; + FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); + FX_DWORD rgb_array[SHADING_STEPS]; + for (int i = 0; i < SHADING_STEPS; i++) { + FX_FLOAT input = (t_max - t_min) * i / SHADING_STEPS + t_min; + int offset = 0; + for (int j = 0; j < nFuncs; j++) { + if (pFuncs[j]) { + int nresults; + if (pFuncs[j]->Call(&input, 1, pResults + offset, nresults)) { + offset += nresults; + } + } + } + FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; + pCS->GetRGB(pResults, R, G, B); + rgb_array[i] = + FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255), + FXSYS_round(G * 255), FXSYS_round(B * 255))); + } + FX_FLOAT a = ((start_x - end_x) * (start_x - end_x)) + + ((start_y - end_y) * (start_y - end_y)) - + ((start_r - end_r) * (start_r - end_r)); + int width = pBitmap->GetWidth(); + int height = pBitmap->GetHeight(); + int pitch = pBitmap->GetPitch(); + FX_BOOL bDecreasing = FALSE; + if (start_r > end_r) { + int length = (int)FXSYS_sqrt((((start_x - end_x) * (start_x - end_x)) + + ((start_y - end_y) * (start_y - end_y)))); + if (length < start_r - end_r) { + bDecreasing = TRUE; + } + } + for (int row = 0; row < height; row++) { + FX_DWORD* dib_buf = (FX_DWORD*)(pBitmap->GetBuffer() + row * pitch); + for (int column = 0; column < width; column++) { + FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row; + matrix.Transform(x, y); + FX_FLOAT b = -2 * (((x - start_x) * (end_x - start_x)) + + ((y - start_y) * (end_y - start_y)) + + (start_r * (end_r - start_r))); + FX_FLOAT c = ((x - start_x) * (x - start_x)) + + ((y - start_y) * (y - start_y)) - (start_r * start_r); + FX_FLOAT s; + if (a == 0) { + s = -c / b; + } else { + FX_FLOAT b2_4ac = (b * b) - 4 * (a * c); + if (b2_4ac < 0) { + continue; + } + FX_FLOAT root = FXSYS_sqrt(b2_4ac); + FX_FLOAT s1, s2; + if (a > 0) { + s1 = (-b - root) / (2 * a); + s2 = (-b + root) / (2 * a); + } else { + s2 = (-b - root) / (2 * a); + s1 = (-b + root) / (2 * a); + } + if (bDecreasing) { + if (s1 >= 0 || bStartExtend) { + s = s1; + } else { + s = s2; + } + } else { + if (s2 <= 1.0f || bEndExtend) { + s = s2; + } else { + s = s1; + } + } + if ((start_r + s * (end_r - start_r)) < 0) { + continue; + } + } + int index = (int32_t)(s * (SHADING_STEPS - 1)); + if (index < 0) { + if (!bStartExtend) { + continue; + } + index = 0; + } + if (index >= SHADING_STEPS) { + if (!bEndExtend) { + continue; + } + index = SHADING_STEPS - 1; + } + dib_buf[column] = rgb_array[index]; + } + } +} +static void DrawFuncShading(CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Dictionary* pDict, + CPDF_Function** pFuncs, + int nFuncs, + CPDF_ColorSpace* pCS, + int alpha) { + ASSERT(pBitmap->GetFormat() == FXDIB_Argb); + CPDF_Array* pDomain = pDict->GetArrayBy("Domain"); + FX_FLOAT xmin = 0, ymin = 0, xmax = 1.0f, ymax = 1.0f; + if (pDomain) { + xmin = pDomain->GetNumberAt(0); + xmax = pDomain->GetNumberAt(1); + ymin = pDomain->GetNumberAt(2); + ymax = pDomain->GetNumberAt(3); + } + CFX_Matrix mtDomain2Target = pDict->GetMatrixBy("Matrix"); + CFX_Matrix matrix, reverse_matrix; + matrix.SetReverse(*pObject2Bitmap); + reverse_matrix.SetReverse(mtDomain2Target); + matrix.Concat(reverse_matrix); + int width = pBitmap->GetWidth(); + int height = pBitmap->GetHeight(); + int pitch = pBitmap->GetPitch(); + int total_results = 0; + for (int j = 0; j < nFuncs; j++) { + if (pFuncs[j]) { + total_results += pFuncs[j]->CountOutputs(); + } + } + if (pCS->CountComponents() > total_results) { + total_results = pCS->CountComponents(); + } + CFX_FixedBufGrow result_array(total_results); + FX_FLOAT* pResults = result_array; + FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT)); + for (int row = 0; row < height; row++) { + FX_DWORD* dib_buf = (FX_DWORD*)(pBitmap->GetBuffer() + row * pitch); + for (int column = 0; column < width; column++) { + FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row; + matrix.Transform(x, y); + if (x < xmin || x > xmax || y < ymin || y > ymax) { + continue; + } + FX_FLOAT input[2]; + int offset = 0; + input[0] = x; + input[1] = y; + for (int j = 0; j < nFuncs; j++) { + if (pFuncs[j]) { + int nresults; + if (pFuncs[j]->Call(input, 2, pResults + offset, nresults)) { + offset += nresults; + } + } + } + FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; + pCS->GetRGB(pResults, R, G, B); + dib_buf[column] = FXARGB_TODIB(FXARGB_MAKE( + alpha, (int32_t)(R * 255), (int32_t)(G * 255), (int32_t)(B * 255))); + } + } +} +FX_BOOL _GetScanlineIntersect(int y, + FX_FLOAT x1, + FX_FLOAT y1, + FX_FLOAT x2, + FX_FLOAT y2, + FX_FLOAT& x) { + if (y1 == y2) { + return FALSE; + } + if (y1 < y2) { + if (y < y1 || y > y2) { + return FALSE; + } + } else { + if (y < y2 || y > y1) { + return FALSE; + } + } + x = x1 + ((x2 - x1) * (y - y1) / (y2 - y1)); + return TRUE; +} +static void DrawGouraud(CFX_DIBitmap* pBitmap, + int alpha, + CPDF_MeshVertex triangle[3]) { + FX_FLOAT min_y = triangle[0].y, max_y = triangle[0].y; + for (int i = 1; i < 3; i++) { + if (min_y > triangle[i].y) { + min_y = triangle[i].y; + } + if (max_y < triangle[i].y) { + max_y = triangle[i].y; + } + } + if (min_y == max_y) { + return; + } + int min_yi = (int)FXSYS_floor(min_y), max_yi = (int)FXSYS_ceil(max_y); + if (min_yi < 0) { + min_yi = 0; + } + if (max_yi >= pBitmap->GetHeight()) { + max_yi = pBitmap->GetHeight() - 1; + } + for (int y = min_yi; y <= max_yi; y++) { + int nIntersects = 0; + FX_FLOAT inter_x[3], r[3], g[3], b[3]; + for (int i = 0; i < 3; i++) { + CPDF_MeshVertex& vertex1 = triangle[i]; + CPDF_MeshVertex& vertex2 = triangle[(i + 1) % 3]; + FX_BOOL bIntersect = _GetScanlineIntersect( + y, vertex1.x, vertex1.y, vertex2.x, vertex2.y, inter_x[nIntersects]); + if (!bIntersect) { + continue; + } + + FX_FLOAT y_dist = (y - vertex1.y) / (vertex2.y - vertex1.y); + r[nIntersects] = vertex1.r + ((vertex2.r - vertex1.r) * y_dist); + g[nIntersects] = vertex1.g + ((vertex2.g - vertex1.g) * y_dist); + b[nIntersects] = vertex1.b + ((vertex2.b - vertex1.b) * y_dist); + nIntersects++; + } + if (nIntersects != 2) { + continue; + } + int min_x, max_x, start_index, end_index; + if (inter_x[0] < inter_x[1]) { + min_x = (int)FXSYS_floor(inter_x[0]); + max_x = (int)FXSYS_ceil(inter_x[1]); + start_index = 0; + end_index = 1; + } else { + min_x = (int)FXSYS_floor(inter_x[1]); + max_x = (int)FXSYS_ceil(inter_x[0]); + start_index = 1; + end_index = 0; + } + int start_x = min_x, end_x = max_x; + if (start_x < 0) { + start_x = 0; + } + if (end_x > pBitmap->GetWidth()) { + end_x = pBitmap->GetWidth(); + } + uint8_t* dib_buf = + pBitmap->GetBuffer() + y * pBitmap->GetPitch() + start_x * 4; + FX_FLOAT r_unit = (r[end_index] - r[start_index]) / (max_x - min_x); + FX_FLOAT g_unit = (g[end_index] - g[start_index]) / (max_x - min_x); + FX_FLOAT b_unit = (b[end_index] - b[start_index]) / (max_x - min_x); + FX_FLOAT R = r[start_index] + (start_x - min_x) * r_unit; + FX_FLOAT G = g[start_index] + (start_x - min_x) * g_unit; + FX_FLOAT B = b[start_index] + (start_x - min_x) * b_unit; + for (int x = start_x; x < end_x; x++) { + R += r_unit; + G += g_unit; + B += b_unit; + FXARGB_SETDIB(dib_buf, + FXARGB_MAKE(alpha, (int32_t)(R * 255), (int32_t)(G * 255), + (int32_t)(B * 255))); + dib_buf += 4; + } + } +} +static void DrawFreeGouraudShading(CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Stream* pShadingStream, + CPDF_Function** pFuncs, + int nFuncs, + CPDF_ColorSpace* pCS, + int alpha) { + ASSERT(pBitmap->GetFormat() == FXDIB_Argb); + + CPDF_MeshStream stream; + if (!stream.Load(pShadingStream, pFuncs, nFuncs, pCS)) + return; + + CPDF_MeshVertex triangle[3]; + FXSYS_memset(triangle, 0, sizeof(triangle)); + + while (!stream.m_BitStream.IsEOF()) { + CPDF_MeshVertex vertex; + FX_DWORD flag = stream.GetVertex(vertex, pObject2Bitmap); + if (flag == 0) { + triangle[0] = vertex; + for (int j = 1; j < 3; j++) { + stream.GetVertex(triangle[j], pObject2Bitmap); + } + } else { + if (flag == 1) { + triangle[0] = triangle[1]; + } + triangle[1] = triangle[2]; + triangle[2] = vertex; + } + DrawGouraud(pBitmap, alpha, triangle); + } +} +static void DrawLatticeGouraudShading(CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Stream* pShadingStream, + CPDF_Function** pFuncs, + int nFuncs, + CPDF_ColorSpace* pCS, + int alpha) { + ASSERT(pBitmap->GetFormat() == FXDIB_Argb); + + int row_verts = pShadingStream->GetDict()->GetIntegerBy("VerticesPerRow"); + if (row_verts < 2) + return; + + CPDF_MeshStream stream; + if (!stream.Load(pShadingStream, pFuncs, nFuncs, pCS)) + return; + + CPDF_MeshVertex* vertex = FX_Alloc2D(CPDF_MeshVertex, row_verts, 2); + if (!stream.GetVertexRow(vertex, row_verts, pObject2Bitmap)) { + FX_Free(vertex); + return; + } + int last_index = 0; + while (1) { + CPDF_MeshVertex* last_row = vertex + last_index * row_verts; + CPDF_MeshVertex* this_row = vertex + (1 - last_index) * row_verts; + if (!stream.GetVertexRow(this_row, row_verts, pObject2Bitmap)) { + FX_Free(vertex); + return; + } + CPDF_MeshVertex triangle[3]; + for (int i = 1; i < row_verts; i++) { + triangle[0] = last_row[i]; + triangle[1] = this_row[i - 1]; + triangle[2] = last_row[i - 1]; + DrawGouraud(pBitmap, alpha, triangle); + triangle[2] = this_row[i]; + DrawGouraud(pBitmap, alpha, triangle); + } + last_index = 1 - last_index; + } + FX_Free(vertex); +} +struct Coon_BezierCoeff { + float a, b, c, d; + void FromPoints(float p0, float p1, float p2, float p3) { + a = -p0 + 3 * p1 - 3 * p2 + p3; + b = 3 * p0 - 6 * p1 + 3 * p2; + c = -3 * p0 + 3 * p1; + d = p0; + } + Coon_BezierCoeff first_half() { + Coon_BezierCoeff result; + result.a = a / 8; + result.b = b / 4; + result.c = c / 2; + result.d = d; + return result; + } + Coon_BezierCoeff second_half() { + Coon_BezierCoeff result; + result.a = a / 8; + result.b = 3 * a / 8 + b / 4; + result.c = 3 * a / 8 + b / 2 + c / 2; + result.d = a / 8 + b / 4 + c / 2 + d; + return result; + } + void GetPoints(float p[4]) { + p[0] = d; + p[1] = c / 3 + p[0]; + p[2] = b / 3 - p[0] + 2 * p[1]; + p[3] = a + p[0] - 3 * p[1] + 3 * p[2]; + } + void GetPointsReverse(float p[4]) { + p[3] = d; + p[2] = c / 3 + p[3]; + p[1] = b / 3 - p[3] + 2 * p[2]; + p[0] = a + p[3] - 3 * p[2] + 3 * p[1]; + } + void BezierInterpol(Coon_BezierCoeff& C1, + Coon_BezierCoeff& C2, + Coon_BezierCoeff& D1, + Coon_BezierCoeff& D2) { + a = (D1.a + D2.a) / 2; + b = (D1.b + D2.b) / 2; + c = (D1.c + D2.c) / 2 - (C1.a / 8 + C1.b / 4 + C1.c / 2) + + (C2.a / 8 + C2.b / 4) + (-C1.d + D2.d) / 2 - (C2.a + C2.b) / 2; + d = C1.a / 8 + C1.b / 4 + C1.c / 2 + C1.d; + } + float Distance() { + float dis = a + b + c; + return dis < 0 ? -dis : dis; + } +}; +struct Coon_Bezier { + Coon_BezierCoeff x, y; + void FromPoints(float x0, + float y0, + float x1, + float y1, + float x2, + float y2, + float x3, + float y3) { + x.FromPoints(x0, x1, x2, x3); + y.FromPoints(y0, y1, y2, y3); + } + Coon_Bezier first_half() { + Coon_Bezier result; + result.x = x.first_half(); + result.y = y.first_half(); + return result; + } + Coon_Bezier second_half() { + Coon_Bezier result; + result.x = x.second_half(); + result.y = y.second_half(); + return result; + } + void BezierInterpol(Coon_Bezier& C1, + Coon_Bezier& C2, + Coon_Bezier& D1, + Coon_Bezier& D2) { + x.BezierInterpol(C1.x, C2.x, D1.x, D2.x); + y.BezierInterpol(C1.y, C2.y, D1.y, D2.y); + } + void GetPoints(FX_PATHPOINT* pPoints) { + float p[4]; + int i; + x.GetPoints(p); + for (i = 0; i < 4; i++) { + pPoints[i].m_PointX = p[i]; + } + y.GetPoints(p); + for (i = 0; i < 4; i++) { + pPoints[i].m_PointY = p[i]; + } + } + void GetPointsReverse(FX_PATHPOINT* pPoints) { + float p[4]; + int i; + x.GetPointsReverse(p); + for (i = 0; i < 4; i++) { + pPoints[i].m_PointX = p[i]; + } + y.GetPointsReverse(p); + for (i = 0; i < 4; i++) { + pPoints[i].m_PointY = p[i]; + } + } + float Distance() { return x.Distance() + y.Distance(); } +}; +static int _BiInterpol(int c0, + int c1, + int c2, + int c3, + int x, + int y, + int x_scale, + int y_scale) { + int x1 = c0 + (c3 - c0) * x / x_scale; + int x2 = c1 + (c2 - c1) * x / x_scale; + return x1 + (x2 - x1) * y / y_scale; +} +struct Coon_Color { + Coon_Color() { FXSYS_memset(comp, 0, sizeof(int) * 3); } + int comp[3]; + void BiInterpol(Coon_Color colors[4], + int x, + int y, + int x_scale, + int y_scale) { + for (int i = 0; i < 3; i++) + comp[i] = + _BiInterpol(colors[0].comp[i], colors[1].comp[i], colors[2].comp[i], + colors[3].comp[i], x, y, x_scale, y_scale); + } + int Distance(Coon_Color& o) { + int max, diff; + max = FXSYS_abs(comp[0] - o.comp[0]); + diff = FXSYS_abs(comp[1] - o.comp[1]); + if (max < diff) { + max = diff; + } + diff = FXSYS_abs(comp[2] - o.comp[2]); + if (max < diff) { + max = diff; + } + return max; + } +}; +struct CPDF_PatchDrawer { + Coon_Color patch_colors[4]; + int max_delta; + CFX_PathData path; + CFX_RenderDevice* pDevice; + int fill_mode; + int alpha; + void Draw(int x_scale, + int y_scale, + int left, + int bottom, + Coon_Bezier C1, + Coon_Bezier C2, + Coon_Bezier D1, + Coon_Bezier D2) { + FX_BOOL bSmall = C1.Distance() < 2 && C2.Distance() < 2 && + D1.Distance() < 2 && D2.Distance() < 2; + Coon_Color div_colors[4]; + int d_bottom, d_left, d_top, d_right; + div_colors[0].BiInterpol(patch_colors, left, bottom, x_scale, y_scale); + if (!bSmall) { + div_colors[1].BiInterpol(patch_colors, left, bottom + 1, x_scale, + y_scale); + div_colors[2].BiInterpol(patch_colors, left + 1, bottom + 1, x_scale, + y_scale); + div_colors[3].BiInterpol(patch_colors, left + 1, bottom, x_scale, + y_scale); + d_bottom = div_colors[3].Distance(div_colors[0]); + d_left = div_colors[1].Distance(div_colors[0]); + d_top = div_colors[1].Distance(div_colors[2]); + d_right = div_colors[2].Distance(div_colors[3]); + } +#define COONCOLOR_THRESHOLD 4 + if (bSmall || + (d_bottom < COONCOLOR_THRESHOLD && d_left < COONCOLOR_THRESHOLD && + d_top < COONCOLOR_THRESHOLD && d_right < COONCOLOR_THRESHOLD)) { + FX_PATHPOINT* pPoints = path.GetPoints(); + C1.GetPoints(pPoints); + D2.GetPoints(pPoints + 3); + C2.GetPointsReverse(pPoints + 6); + D1.GetPointsReverse(pPoints + 9); + int fillFlags = FXFILL_WINDING | FXFILL_FULLCOVER; + if (fill_mode & RENDER_NOPATHSMOOTH) { + fillFlags |= FXFILL_NOPATHSMOOTH; + } + pDevice->DrawPath( + &path, NULL, NULL, + FXARGB_MAKE(alpha, div_colors[0].comp[0], div_colors[0].comp[1], + div_colors[0].comp[2]), + 0, fillFlags); + } else { + if (d_bottom < COONCOLOR_THRESHOLD && d_top < COONCOLOR_THRESHOLD) { + Coon_Bezier m1; + m1.BezierInterpol(D1, D2, C1, C2); + y_scale *= 2; + bottom *= 2; + Draw(x_scale, y_scale, left, bottom, C1, m1, D1.first_half(), + D2.first_half()); + Draw(x_scale, y_scale, left, bottom + 1, m1, C2, D1.second_half(), + D2.second_half()); + } else if (d_left < COONCOLOR_THRESHOLD && + d_right < COONCOLOR_THRESHOLD) { + Coon_Bezier m2; + m2.BezierInterpol(C1, C2, D1, D2); + x_scale *= 2; + left *= 2; + Draw(x_scale, y_scale, left, bottom, C1.first_half(), C2.first_half(), + D1, m2); + Draw(x_scale, y_scale, left + 1, bottom, C1.second_half(), + C2.second_half(), m2, D2); + } else { + Coon_Bezier m1, m2; + m1.BezierInterpol(D1, D2, C1, C2); + m2.BezierInterpol(C1, C2, D1, D2); + Coon_Bezier m1f = m1.first_half(); + Coon_Bezier m1s = m1.second_half(); + Coon_Bezier m2f = m2.first_half(); + Coon_Bezier m2s = m2.second_half(); + x_scale *= 2; + y_scale *= 2; + left *= 2; + bottom *= 2; + Draw(x_scale, y_scale, left, bottom, C1.first_half(), m1f, + D1.first_half(), m2f); + Draw(x_scale, y_scale, left, bottom + 1, m1f, C2.first_half(), + D1.second_half(), m2s); + Draw(x_scale, y_scale, left + 1, bottom, C1.second_half(), m1s, m2f, + D2.first_half()); + Draw(x_scale, y_scale, left + 1, bottom + 1, m1s, C2.second_half(), m2s, + D2.second_half()); + } + } + } +}; + +bool _CheckCoonTensorPara(const CPDF_MeshStream& stream) { + bool bCoorBits = (stream.m_nCoordBits == 1 || stream.m_nCoordBits == 2 || + stream.m_nCoordBits == 4 || stream.m_nCoordBits == 8 || + stream.m_nCoordBits == 12 || stream.m_nCoordBits == 16 || + stream.m_nCoordBits == 24 || stream.m_nCoordBits == 32); + + bool bCompBits = (stream.m_nCompBits == 1 || stream.m_nCompBits == 2 || + stream.m_nCompBits == 4 || stream.m_nCompBits == 8 || + stream.m_nCompBits == 12 || stream.m_nCompBits == 16); + + bool bFlagBits = (stream.m_nFlagBits == 2 || stream.m_nFlagBits == 4 || + stream.m_nFlagBits == 8); + + return bCoorBits && bCompBits && bFlagBits; +} + +static void DrawCoonPatchMeshes(FX_BOOL bTensor, + CFX_DIBitmap* pBitmap, + CFX_Matrix* pObject2Bitmap, + CPDF_Stream* pShadingStream, + CPDF_Function** pFuncs, + int nFuncs, + CPDF_ColorSpace* pCS, + int fill_mode, + int alpha) { + ASSERT(pBitmap->GetFormat() == FXDIB_Argb); + + CFX_FxgeDevice device; + device.Attach(pBitmap); + CPDF_MeshStream stream; + if (!stream.Load(pShadingStream, pFuncs, nFuncs, pCS)) + return; + if (!_CheckCoonTensorPara(stream)) + return; + + CPDF_PatchDrawer patch; + patch.alpha = alpha; + patch.pDevice = &device; + patch.fill_mode = fill_mode; + patch.path.SetPointCount(13); + FX_PATHPOINT* pPoints = patch.path.GetPoints(); + pPoints[0].m_Flag = FXPT_MOVETO; + for (int i = 1; i < 13; i++) { + pPoints[i].m_Flag = FXPT_BEZIERTO; + } + CFX_PointF coords[16]; + int point_count = bTensor ? 16 : 12; + while (!stream.m_BitStream.IsEOF()) { + FX_DWORD flag = stream.GetFlag(); + int iStartPoint = 0, iStartColor = 0, i = 0; + if (flag) { + iStartPoint = 4; + iStartColor = 2; + CFX_PointF tempCoords[4]; + for (i = 0; i < 4; i++) { + tempCoords[i] = coords[(flag * 3 + i) % 12]; + } + FXSYS_memcpy(coords, tempCoords, sizeof(tempCoords)); + Coon_Color tempColors[2]; + tempColors[0] = patch.patch_colors[flag]; + tempColors[1] = patch.patch_colors[(flag + 1) % 4]; + FXSYS_memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2); + } + for (i = iStartPoint; i < point_count; i++) { + stream.GetCoords(coords[i].x, coords[i].y); + pObject2Bitmap->Transform(coords[i].x, coords[i].y); + } + for (i = iStartColor; i < 4; i++) { + FX_FLOAT r = 0.0f, g = 0.0f, b = 0.0f; + stream.GetColor(r, g, b); + patch.patch_colors[i].comp[0] = (int32_t)(r * 255); + patch.patch_colors[i].comp[1] = (int32_t)(g * 255); + patch.patch_colors[i].comp[2] = (int32_t)(b * 255); + } + CFX_FloatRect bbox = CFX_FloatRect::GetBBox(coords, point_count); + if (bbox.right <= 0 || bbox.left >= (FX_FLOAT)pBitmap->GetWidth() || + bbox.top <= 0 || bbox.bottom >= (FX_FLOAT)pBitmap->GetHeight()) { + continue; + } + Coon_Bezier C1, C2, D1, D2; + C1.FromPoints(coords[0].x, coords[0].y, coords[11].x, coords[11].y, + coords[10].x, coords[10].y, coords[9].x, coords[9].y); + C2.FromPoints(coords[3].x, coords[3].y, coords[4].x, coords[4].y, + coords[5].x, coords[5].y, coords[6].x, coords[6].y); + D1.FromPoints(coords[0].x, coords[0].y, coords[1].x, coords[1].y, + coords[2].x, coords[2].y, coords[3].x, coords[3].y); + D2.FromPoints(coords[9].x, coords[9].y, coords[8].x, coords[8].y, + coords[7].x, coords[7].y, coords[6].x, coords[6].y); + patch.Draw(1, 1, 0, 0, C1, C2, D1, D2); + } +} +void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern, + CFX_Matrix* pMatrix, + FX_RECT& clip_rect, + int alpha, + FX_BOOL bAlphaMode) { + CPDF_Function** pFuncs = pPattern->m_pFunctions; + int nFuncs = pPattern->m_nFuncs; + CPDF_Dictionary* pDict = pPattern->m_pShadingObj->GetDict(); + CPDF_ColorSpace* pColorSpace = pPattern->m_pCS; + if (!pColorSpace) { + return; + } + FX_ARGB background = 0; + if (!pPattern->m_bShadingObj && + pPattern->m_pShadingObj->GetDict()->KeyExist("Background")) { + CPDF_Array* pBackColor = + pPattern->m_pShadingObj->GetDict()->GetArrayBy("Background"); + if (pBackColor && + pBackColor->GetCount() >= pColorSpace->CountComponents()) { + CFX_FixedBufGrow comps(pColorSpace->CountComponents()); + for (int i = 0; i < pColorSpace->CountComponents(); i++) { + comps[i] = pBackColor->GetNumberAt(i); + } + FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f; + pColorSpace->GetRGB(comps, R, G, B); + background = ArgbEncode(255, (int32_t)(R * 255), (int32_t)(G * 255), + (int32_t)(B * 255)); + } + } + if (pDict->KeyExist("BBox")) { + CFX_FloatRect rect = pDict->GetRectBy("BBox"); + rect.Transform(pMatrix); + clip_rect.Intersect(rect.GetOutterRect()); + } + CPDF_DeviceBuffer buffer; + buffer.Initialize(m_pContext, m_pDevice, &clip_rect, m_pCurObj, 150); + CFX_Matrix FinalMatrix = *pMatrix; + FinalMatrix.Concat(*buffer.GetMatrix()); + CFX_DIBitmap* pBitmap = buffer.GetBitmap(); + if (!pBitmap->GetBuffer()) { + return; + } + pBitmap->Clear(background); + int fill_mode = m_Options.m_Flags; + switch (pPattern->m_ShadingType) { + case kInvalidShading: + case kMaxShading: + return; + case kFunctionBasedShading: + DrawFuncShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs, pColorSpace, + alpha); + break; + case kAxialShading: + DrawAxialShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs, + pColorSpace, alpha); + break; + case kRadialShading: + DrawRadialShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs, + pColorSpace, alpha); + break; + case kFreeFormGouraudTriangleMeshShading: { + DrawFreeGouraudShading(pBitmap, &FinalMatrix, + ToStream(pPattern->m_pShadingObj), pFuncs, nFuncs, + pColorSpace, alpha); + } break; + case kLatticeFormGouraudTriangleMeshShading: { + DrawLatticeGouraudShading(pBitmap, &FinalMatrix, + ToStream(pPattern->m_pShadingObj), pFuncs, + nFuncs, pColorSpace, alpha); + } break; + case kCoonsPatchMeshShading: + case kTensorProductPatchMeshShading: { + DrawCoonPatchMeshes( + pPattern->m_ShadingType == kTensorProductPatchMeshShading, pBitmap, + &FinalMatrix, ToStream(pPattern->m_pShadingObj), pFuncs, nFuncs, + pColorSpace, fill_mode, alpha); + } break; + } + if (bAlphaMode) { + pBitmap->LoadChannel(FXDIB_Red, pBitmap, FXDIB_Alpha); + } + if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) { + pBitmap->ConvertColorScale(m_Options.m_ForeColor, m_Options.m_BackColor); + } + buffer.OutputToDevice(); +} +void CPDF_RenderStatus::DrawShadingPattern(CPDF_ShadingPattern* pattern, + const CPDF_PageObject* pPageObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bStroke) { + if (!pattern->Load()) { + return; + } + m_pDevice->SaveState(); + if (pPageObj->IsPath()) { + if (!SelectClipPath(pPageObj->AsPath(), pObj2Device, bStroke)) { + m_pDevice->RestoreState(); + return; + } + } else if (pPageObj->IsImage()) { + m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device)); + } else { + return; + } + FX_RECT rect; + if (GetObjectClippedRect(pPageObj, pObj2Device, FALSE, rect)) { + m_pDevice->RestoreState(); + return; + } + CFX_Matrix matrix = pattern->m_Pattern2Form; + matrix.Concat(*pObj2Device); + GetScaledMatrix(matrix); + int alpha = pPageObj->m_GeneralState.GetAlpha(bStroke); + DrawShading(pattern, &matrix, rect, alpha, + m_Options.m_ColorMode == RENDER_COLOR_ALPHA); + m_pDevice->RestoreState(); +} +FX_BOOL CPDF_RenderStatus::ProcessShading(const CPDF_ShadingObject* pShadingObj, + const CFX_Matrix* pObj2Device) { + FX_RECT rect = pShadingObj->GetBBox(pObj2Device); + FX_RECT clip_box = m_pDevice->GetClipBox(); + rect.Intersect(clip_box); + if (rect.IsEmpty()) { + return TRUE; + } + CFX_Matrix matrix = pShadingObj->m_Matrix; + matrix.Concat(*pObj2Device); + DrawShading(pShadingObj->m_pShading, &matrix, rect, + pShadingObj->m_GeneralState.GetAlpha(FALSE), + m_Options.m_ColorMode == RENDER_COLOR_ALPHA); + return TRUE; +} +static CFX_DIBitmap* DrawPatternBitmap(CPDF_Document* pDoc, + CPDF_PageRenderCache* pCache, + CPDF_TilingPattern* pPattern, + const CFX_Matrix* pObject2Device, + int width, + int height, + int flags) { + CFX_DIBitmap* pBitmap = new CFX_DIBitmap; + if (!pBitmap->Create(width, height, + pPattern->m_bColored ? FXDIB_Argb : FXDIB_8bppMask)) { + delete pBitmap; + return NULL; + } + CFX_FxgeDevice bitmap_device; + bitmap_device.Attach(pBitmap); + pBitmap->Clear(0); + CFX_FloatRect cell_bbox = pPattern->m_BBox; + pPattern->m_Pattern2Form.TransformRect(cell_bbox); + pObject2Device->TransformRect(cell_bbox); + CFX_FloatRect bitmap_rect(0.0f, 0.0f, (FX_FLOAT)width, (FX_FLOAT)height); + CFX_Matrix mtAdjust; + mtAdjust.MatchRect(bitmap_rect, cell_bbox); + CFX_Matrix mtPattern2Bitmap = *pObject2Device; + mtPattern2Bitmap.Concat(mtAdjust); + CPDF_RenderOptions options; + if (!pPattern->m_bColored) { + options.m_ColorMode = RENDER_COLOR_ALPHA; + } + flags |= RENDER_FORCE_HALFTONE; + options.m_Flags = flags; + CPDF_RenderContext context(pDoc, pCache); + context.AppendLayer(pPattern->m_pForm, &mtPattern2Bitmap); + context.Render(&bitmap_device, &options, nullptr); + return pBitmap; +} +void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern, + const CPDF_PageObject* pPageObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bStroke) { + if (!pPattern->Load()) { + return; + } + m_pDevice->SaveState(); + if (pPageObj->IsPath()) { + if (!SelectClipPath(pPageObj->AsPath(), pObj2Device, bStroke)) { + m_pDevice->RestoreState(); + return; + } + } else if (pPageObj->IsImage()) { + m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device)); + } else { + return; + } + FX_RECT clip_box = m_pDevice->GetClipBox(); + if (clip_box.IsEmpty()) { + m_pDevice->RestoreState(); + return; + } + CFX_Matrix dCTM = m_pDevice->GetCTM(); + FX_FLOAT sa = FXSYS_fabs(dCTM.a); + FX_FLOAT sd = FXSYS_fabs(dCTM.d); + clip_box.right = clip_box.left + (int32_t)FXSYS_ceil(clip_box.Width() * sa); + clip_box.bottom = clip_box.top + (int32_t)FXSYS_ceil(clip_box.Height() * sd); + CFX_Matrix mtPattern2Device = pPattern->m_Pattern2Form; + mtPattern2Device.Concat(*pObj2Device); + GetScaledMatrix(mtPattern2Device); + FX_BOOL bAligned = FALSE; + if (pPattern->m_BBox.left == 0 && pPattern->m_BBox.bottom == 0 && + pPattern->m_BBox.right == pPattern->m_XStep && + pPattern->m_BBox.top == pPattern->m_YStep && + (mtPattern2Device.IsScaled() || mtPattern2Device.Is90Rotated())) { + bAligned = TRUE; + } + CFX_FloatRect cell_bbox = pPattern->m_BBox; + mtPattern2Device.TransformRect(cell_bbox); + int width = (int)FXSYS_ceil(cell_bbox.Width()); + int height = (int)FXSYS_ceil(cell_bbox.Height()); + if (width == 0) { + width = 1; + } + if (height == 0) { + height = 1; + } + int min_col, max_col, min_row, max_row; + CFX_Matrix mtDevice2Pattern; + mtDevice2Pattern.SetReverse(mtPattern2Device); + CFX_FloatRect clip_box_p(clip_box); + clip_box_p.Transform(&mtDevice2Pattern); + + min_col = (int)FXSYS_ceil((clip_box_p.left - pPattern->m_BBox.right) / + pPattern->m_XStep); + max_col = (int)FXSYS_floor((clip_box_p.right - pPattern->m_BBox.left) / + pPattern->m_XStep); + min_row = (int)FXSYS_ceil((clip_box_p.bottom - pPattern->m_BBox.top) / + pPattern->m_YStep); + max_row = (int)FXSYS_floor((clip_box_p.top - pPattern->m_BBox.bottom) / + pPattern->m_YStep); + + if (width > clip_box.Width() || height > clip_box.Height() || + width * height > clip_box.Width() * clip_box.Height()) { + CPDF_GraphicStates* pStates = NULL; + if (!pPattern->m_bColored) { + pStates = CloneObjStates(pPageObj, bStroke); + } + CPDF_Dictionary* pFormResource = NULL; + if (pPattern->m_pForm->m_pFormDict) { + pFormResource = pPattern->m_pForm->m_pFormDict->GetDictBy("Resources"); + } + for (int col = min_col; col <= max_col; col++) + for (int row = min_row; row <= max_row; row++) { + FX_FLOAT orig_x, orig_y; + orig_x = col * pPattern->m_XStep; + orig_y = row * pPattern->m_YStep; + mtPattern2Device.Transform(orig_x, orig_y); + CFX_Matrix matrix = *pObj2Device; + matrix.Translate(orig_x - mtPattern2Device.e, + orig_y - mtPattern2Device.f); + m_pDevice->SaveState(); + CPDF_RenderStatus status; + status.Initialize(m_pContext, m_pDevice, NULL, NULL, this, pStates, + &m_Options, pPattern->m_pForm->m_Transparency, + m_bDropObjects, pFormResource); + status.RenderObjectList(pPattern->m_pForm, &matrix); + m_pDevice->RestoreState(); + } + m_pDevice->RestoreState(); + delete pStates; + return; + } + if (bAligned) { + int orig_x = FXSYS_round(mtPattern2Device.e); + int orig_y = FXSYS_round(mtPattern2Device.f); + min_col = (clip_box.left - orig_x) / width; + if (clip_box.left < orig_x) { + min_col--; + } + max_col = (clip_box.right - orig_x) / width; + if (clip_box.right <= orig_x) { + max_col--; + } + min_row = (clip_box.top - orig_y) / height; + if (clip_box.top < orig_y) { + min_row--; + } + max_row = (clip_box.bottom - orig_y) / height; + if (clip_box.bottom <= orig_y) { + max_row--; + } + } + FX_FLOAT left_offset = cell_bbox.left - mtPattern2Device.e; + FX_FLOAT top_offset = cell_bbox.bottom - mtPattern2Device.f; + CFX_DIBitmap* pPatternBitmap = NULL; + if (width * height < 16) { + CFX_DIBitmap* pEnlargedBitmap = + DrawPatternBitmap(m_pContext->GetDocument(), m_pContext->GetPageCache(), + pPattern, pObj2Device, 8, 8, m_Options.m_Flags); + pPatternBitmap = pEnlargedBitmap->StretchTo(width, height); + delete pEnlargedBitmap; + } else { + pPatternBitmap = DrawPatternBitmap( + m_pContext->GetDocument(), m_pContext->GetPageCache(), pPattern, + pObj2Device, width, height, m_Options.m_Flags); + } + if (!pPatternBitmap) { + m_pDevice->RestoreState(); + return; + } + if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) { + pPatternBitmap->ConvertColorScale(m_Options.m_ForeColor, + m_Options.m_BackColor); + } + FX_ARGB fill_argb = GetFillArgb(pPageObj); + int clip_width = clip_box.right - clip_box.left; + int clip_height = clip_box.bottom - clip_box.top; + CFX_DIBitmap screen; + if (!screen.Create(clip_width, clip_height, FXDIB_Argb)) { + return; + } + screen.Clear(0); + FX_DWORD* src_buf = (FX_DWORD*)pPatternBitmap->GetBuffer(); + for (int col = min_col; col <= max_col; col++) { + for (int row = min_row; row <= max_row; row++) { + int start_x, start_y; + if (bAligned) { + start_x = FXSYS_round(mtPattern2Device.e) + col * width - clip_box.left; + start_y = FXSYS_round(mtPattern2Device.f) + row * height - clip_box.top; + } else { + FX_FLOAT orig_x = col * pPattern->m_XStep; + FX_FLOAT orig_y = row * pPattern->m_YStep; + mtPattern2Device.Transform(orig_x, orig_y); + start_x = FXSYS_round(orig_x + left_offset) - clip_box.left; + start_y = FXSYS_round(orig_y + top_offset) - clip_box.top; + } + if (width == 1 && height == 1) { + if (start_x < 0 || start_x >= clip_box.Width() || start_y < 0 || + start_y >= clip_box.Height()) { + continue; + } + FX_DWORD* dest_buf = + (FX_DWORD*)(screen.GetBuffer() + screen.GetPitch() * start_y + + start_x * 4); + if (pPattern->m_bColored) { + *dest_buf = *src_buf; + } else { + *dest_buf = (*(uint8_t*)src_buf << 24) | (fill_argb & 0xffffff); + } + } else { + if (pPattern->m_bColored) { + screen.CompositeBitmap(start_x, start_y, width, height, + pPatternBitmap, 0, 0); + } else { + screen.CompositeMask(start_x, start_y, width, height, pPatternBitmap, + fill_argb, 0, 0); + } + } + } + } + CompositeDIBitmap(&screen, clip_box.left, clip_box.top, 0, 255, + FXDIB_BLEND_NORMAL, FALSE); + m_pDevice->RestoreState(); + delete pPatternBitmap; +} +void CPDF_RenderStatus::DrawPathWithPattern(const CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device, + CPDF_Color* pColor, + FX_BOOL bStroke) { + CPDF_Pattern* pattern = pColor->GetPattern(); + if (!pattern) { + return; + } + if (pattern->m_PatternType == CPDF_Pattern::TILING) { + DrawTilingPattern(static_cast(pattern), pPathObj, + pObj2Device, bStroke); + } else { + DrawShadingPattern(static_cast(pattern), pPathObj, + pObj2Device, bStroke); + } +} +void CPDF_RenderStatus::ProcessPathPattern(const CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device, + int& filltype, + FX_BOOL& bStroke) { + if (filltype) { + CPDF_Color& FillColor = *pPathObj->m_ColorState.GetFillColor(); + if (FillColor.m_pCS && FillColor.m_pCS->GetFamily() == PDFCS_PATTERN) { + DrawPathWithPattern(pPathObj, pObj2Device, &FillColor, FALSE); + filltype = 0; + } + } + if (bStroke) { + CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor(); + if (StrokeColor.m_pCS && StrokeColor.m_pCS->GetFamily() == PDFCS_PATTERN) { + DrawPathWithPattern(pPathObj, pObj2Device, &StrokeColor, TRUE); + bStroke = FALSE; + } + } +} diff --git a/core/fpdfapi/fpdf_render/fpdf_render_pattern_embeddertest.cpp b/core/fpdfapi/fpdf_render/fpdf_render_pattern_embeddertest.cpp new file mode 100644 index 0000000000..176c923372 --- /dev/null +++ b/core/fpdfapi/fpdf_render/fpdf_render_pattern_embeddertest.cpp @@ -0,0 +1,17 @@ +// Copyright 2015 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "testing/embedder_test.h" +#include "testing/gtest/include/gtest/gtest.h" + +class FPDFRenderPatternEmbeddertest : public EmbedderTest {}; + +TEST_F(FPDFRenderPatternEmbeddertest, LoadError_547706) { + // Test shading where object is a dictionary instead of a stream. + EXPECT_TRUE(OpenDocument("bug_547706.pdf")); + FPDF_PAGE page = LoadPage(0); + FPDF_BITMAP bitmap = RenderPage(page); + FPDFBitmap_Destroy(bitmap); + UnloadPage(page); +} diff --git a/core/fpdfapi/fpdf_render/fpdf_render_text.cpp b/core/fpdfapi/fpdf_render/fpdf_render_text.cpp new file mode 100644 index 0000000000..24b77ed368 --- /dev/null +++ b/core/fpdfapi/fpdf_render/fpdf_render_text.cpp @@ -0,0 +1,787 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "core/fpdfapi/fpdf_render/render_int.h" + +#include "core/fpdfapi/fpdf_page/pageint.h" +#include "core/include/fpdfapi/cpdf_dictionary.h" +#include "core/include/fpdfapi/cpdf_document.h" +#include "core/include/fpdfapi/fpdf_pageobj.h" +#include "core/include/fpdfapi/fpdf_render.h" +#include "core/include/fxge/fx_ge.h" + +CPDF_Type3Cache::~CPDF_Type3Cache() { + for (const auto& pair : m_SizeMap) { + delete pair.second; + } + m_SizeMap.clear(); +} +CFX_GlyphBitmap* CPDF_Type3Cache::LoadGlyph(FX_DWORD charcode, + const CFX_Matrix* pMatrix, + FX_FLOAT retinaScaleX, + FX_FLOAT retinaScaleY) { + _CPDF_UniqueKeyGen keygen; + keygen.Generate( + 4, FXSYS_round(pMatrix->a * 10000), FXSYS_round(pMatrix->b * 10000), + FXSYS_round(pMatrix->c * 10000), FXSYS_round(pMatrix->d * 10000)); + CFX_ByteStringC FaceGlyphsKey(keygen.m_Key, keygen.m_KeyLen); + CPDF_Type3Glyphs* pSizeCache; + auto it = m_SizeMap.find(FaceGlyphsKey); + if (it == m_SizeMap.end()) { + pSizeCache = new CPDF_Type3Glyphs; + m_SizeMap[FaceGlyphsKey] = pSizeCache; + } else { + pSizeCache = it->second; + } + auto it2 = pSizeCache->m_GlyphMap.find(charcode); + if (it2 != pSizeCache->m_GlyphMap.end()) + return it2->second; + + CFX_GlyphBitmap* pGlyphBitmap = + RenderGlyph(pSizeCache, charcode, pMatrix, retinaScaleX, retinaScaleY); + pSizeCache->m_GlyphMap[charcode] = pGlyphBitmap; + return pGlyphBitmap; +} +CPDF_Type3Glyphs::~CPDF_Type3Glyphs() { + for (const auto& pair : m_GlyphMap) + delete pair.second; +} +static int _AdjustBlue(FX_FLOAT pos, int& count, int blues[]) { + FX_FLOAT min_distance = 1000000.0f * 1.0f; + int closest_pos = -1; + for (int i = 0; i < count; i++) { + FX_FLOAT distance = (FX_FLOAT)FXSYS_fabs(pos - (FX_FLOAT)blues[i]); + if (distance < 1.0f * 80.0f / 100.0f && distance < min_distance) { + min_distance = distance; + closest_pos = i; + } + } + if (closest_pos >= 0) { + return blues[closest_pos]; + } + int new_pos = FXSYS_round(pos); + if (count == TYPE3_MAX_BLUES) { + return new_pos; + } + blues[count++] = new_pos; + return new_pos; +} +void CPDF_Type3Glyphs::AdjustBlue(FX_FLOAT top, + FX_FLOAT bottom, + int& top_line, + int& bottom_line) { + top_line = _AdjustBlue(top, m_TopBlueCount, m_TopBlue); + bottom_line = _AdjustBlue(bottom, m_BottomBlueCount, m_BottomBlue); +} + +static FX_BOOL _IsScanLine1bpp(uint8_t* pBuf, int width) { + int size = width / 8; + for (int i = 0; i < size; i++) { + if (pBuf[i]) + return TRUE; + } + return (width % 8) && (pBuf[width / 8] & (0xff << (8 - width % 8))); +} + +static FX_BOOL _IsScanLine8bpp(uint8_t* pBuf, int width) { + for (int i = 0; i < width; i++) { + if (pBuf[i] > 0x40) + return TRUE; + } + return FALSE; +} + +static int _DetectFirstLastScan(const CFX_DIBitmap* pBitmap, FX_BOOL bFirst) { + int height = pBitmap->GetHeight(), pitch = pBitmap->GetPitch(), + width = pBitmap->GetWidth(); + int bpp = pBitmap->GetBPP(); + if (bpp > 8) { + width *= bpp / 8; + } + uint8_t* pBuf = pBitmap->GetBuffer(); + int line = bFirst ? 0 : height - 1; + int line_step = bFirst ? 1 : -1; + int line_end = bFirst ? height : -1; + while (line != line_end) { + if (bpp == 1) { + if (_IsScanLine1bpp(pBuf + line * pitch, width)) { + return line; + } + } else { + if (_IsScanLine8bpp(pBuf + line * pitch, width)) { + return line; + } + } + line += line_step; + } + return -1; +} +CFX_GlyphBitmap* CPDF_Type3Cache::RenderGlyph(CPDF_Type3Glyphs* pSize, + FX_DWORD charcode, + const CFX_Matrix* pMatrix, + FX_FLOAT retinaScaleX, + FX_FLOAT retinaScaleY) { + const CPDF_Type3Char* pChar = m_pFont->LoadChar(charcode); + if (!pChar || !pChar->m_pBitmap) + return nullptr; + + CFX_DIBitmap* pBitmap = pChar->m_pBitmap; + CFX_Matrix image_matrix, text_matrix; + image_matrix = pChar->m_ImageMatrix; + text_matrix.Set(pMatrix->a, pMatrix->b, pMatrix->c, pMatrix->d, 0, 0); + image_matrix.Concat(text_matrix); + CFX_DIBitmap* pResBitmap = NULL; + int left, top; + if (FXSYS_fabs(image_matrix.b) < FXSYS_fabs(image_matrix.a) / 100 && + FXSYS_fabs(image_matrix.c) < FXSYS_fabs(image_matrix.d) / 100) { + int top_line, bottom_line; + top_line = _DetectFirstLastScan(pBitmap, TRUE); + bottom_line = _DetectFirstLastScan(pBitmap, FALSE); + if (top_line == 0 && bottom_line == pBitmap->GetHeight() - 1) { + FX_FLOAT top_y = image_matrix.d + image_matrix.f; + FX_FLOAT bottom_y = image_matrix.f; + FX_BOOL bFlipped = top_y > bottom_y; + if (bFlipped) { + FX_FLOAT temp = top_y; + top_y = bottom_y; + bottom_y = temp; + } + pSize->AdjustBlue(top_y, bottom_y, top_line, bottom_line); + pResBitmap = pBitmap->StretchTo( + (int)(FXSYS_round(image_matrix.a) * retinaScaleX), + (int)((bFlipped ? top_line - bottom_line : bottom_line - top_line) * + retinaScaleY)); + top = top_line; + if (image_matrix.a < 0) { + image_matrix.Scale(retinaScaleX, retinaScaleY); + left = FXSYS_round(image_matrix.e + image_matrix.a); + } else { + left = FXSYS_round(image_matrix.e); + } + } else { + } + } + if (!pResBitmap) { + image_matrix.Scale(retinaScaleX, retinaScaleY); + pResBitmap = pBitmap->TransformTo(&image_matrix, left, top); + } + if (!pResBitmap) { + return NULL; + } + CFX_GlyphBitmap* pGlyph = new CFX_GlyphBitmap; + pGlyph->m_Left = left; + pGlyph->m_Top = -top; + pGlyph->m_Bitmap.TakeOver(pResBitmap); + delete pResBitmap; + return pGlyph; +} +void _CPDF_UniqueKeyGen::Generate(int count, ...) { + va_list argList; + va_start(argList, count); + for (int i = 0; i < count; i++) { + int p = va_arg(argList, int); + ((FX_DWORD*)m_Key)[i] = p; + } + va_end(argList); + m_KeyLen = count * sizeof(FX_DWORD); +} +FX_BOOL CPDF_RenderStatus::ProcessText(const CPDF_TextObject* textobj, + const CFX_Matrix* pObj2Device, + CFX_PathData* pClippingPath) { + if (textobj->m_nChars == 0) { + return TRUE; + } + int text_render_mode = textobj->m_TextState.GetObject()->m_TextMode; + if (text_render_mode == 3) { + return TRUE; + } + CPDF_Font* pFont = textobj->m_TextState.GetFont(); + if (pFont->IsType3Font()) { + return ProcessType3Text(textobj, pObj2Device); + } + FX_BOOL bFill = FALSE, bStroke = FALSE, bClip = FALSE; + if (pClippingPath) { + bClip = TRUE; + } else { + switch (text_render_mode) { + case 0: + case 4: + bFill = TRUE; + break; + case 1: + case 5: + if (!pFont->GetFace() && + !(pFont->GetSubstFont()->m_SubstFlags & FXFONT_SUBST_GLYPHPATH)) { + bFill = TRUE; + } else { + bStroke = TRUE; + } + break; + case 2: + case 6: + if (!pFont->GetFace() && + !(pFont->GetSubstFont()->m_SubstFlags & FXFONT_SUBST_GLYPHPATH)) { + bFill = TRUE; + } else { + bFill = bStroke = TRUE; + } + break; + case 3: + case 7: + return TRUE; + default: + bFill = TRUE; + } + } + FX_ARGB stroke_argb = 0, fill_argb = 0; + FX_BOOL bPattern = FALSE; + if (bStroke) { + if (textobj->m_ColorState.GetStrokeColor()->IsPattern()) { + bPattern = TRUE; + } else { + stroke_argb = GetStrokeArgb(textobj); + } + } + if (bFill) { + if (textobj->m_ColorState.GetFillColor()->IsPattern()) { + bPattern = TRUE; + } else { + fill_argb = GetFillArgb(textobj); + } + } + CFX_Matrix text_matrix; + textobj->GetTextMatrix(&text_matrix); + if (IsAvailableMatrix(text_matrix) == FALSE) { + return TRUE; + } + FX_FLOAT font_size = textobj->m_TextState.GetFontSize(); + if (bPattern) { + DrawTextPathWithPattern(textobj, pObj2Device, pFont, font_size, + &text_matrix, bFill, bStroke); + return TRUE; + } + if (bClip || bStroke) { + const CFX_Matrix* pDeviceMatrix = pObj2Device; + CFX_Matrix device_matrix; + if (bStroke) { + const FX_FLOAT* pCTM = textobj->m_TextState.GetObject()->m_CTM; + if (pCTM[0] != 1.0f || pCTM[3] != 1.0f) { + CFX_Matrix ctm(pCTM[0], pCTM[1], pCTM[2], pCTM[3], 0, 0); + text_matrix.ConcatInverse(ctm); + device_matrix.Copy(ctm); + device_matrix.Concat(*pObj2Device); + pDeviceMatrix = &device_matrix; + } + } + int flag = 0; + if (bStroke && bFill) { + flag |= FX_FILL_STROKE; + flag |= FX_STROKE_TEXT_MODE; + } + const CPDF_GeneralStateData* pGeneralData = + ((CPDF_PageObject*)textobj)->m_GeneralState; + if (pGeneralData && pGeneralData->m_StrokeAdjust) { + flag |= FX_STROKE_ADJUST; + } + if (m_Options.m_Flags & RENDER_NOTEXTSMOOTH) { + flag |= FXFILL_NOPATHSMOOTH; + } + return CPDF_TextRenderer::DrawTextPath( + m_pDevice, textobj->m_nChars, textobj->m_pCharCodes, + textobj->m_pCharPos, pFont, font_size, &text_matrix, pDeviceMatrix, + textobj->m_GraphState, fill_argb, stroke_argb, pClippingPath, flag); + } + text_matrix.Concat(*pObj2Device); + return CPDF_TextRenderer::DrawNormalText( + m_pDevice, textobj->m_nChars, textobj->m_pCharCodes, textobj->m_pCharPos, + pFont, font_size, &text_matrix, fill_argb, &m_Options); +} +CPDF_Type3Cache* CPDF_RenderStatus::GetCachedType3(CPDF_Type3Font* pFont) { + if (!pFont->m_pDocument) { + return NULL; + } + pFont->m_pDocument->GetPageData()->GetFont(pFont->GetFontDict(), FALSE); + return pFont->m_pDocument->GetRenderData()->GetCachedType3(pFont); +} +static void ReleaseCachedType3(CPDF_Type3Font* pFont) { + if (!pFont->m_pDocument) { + return; + } + pFont->m_pDocument->GetRenderData()->ReleaseCachedType3(pFont); + pFont->m_pDocument->GetPageData()->ReleaseFont(pFont->GetFontDict()); +} +FX_BOOL CPDF_Type3Char::LoadBitmap(CPDF_RenderContext* pContext) { + if (m_pBitmap || !m_pForm) { + return TRUE; + } + if (m_pForm->GetPageObjectList()->size() == 1 && !m_bColored) { + auto& pPageObj = m_pForm->GetPageObjectList()->front(); + if (pPageObj->IsImage()) { + m_ImageMatrix = pPageObj->AsImage()->m_Matrix; + const CFX_DIBSource* pSource = + pPageObj->AsImage()->m_pImage->LoadDIBSource(); + if (pSource) { + m_pBitmap = pSource->Clone(); + delete pSource; + } + delete m_pForm; + m_pForm = NULL; + return TRUE; + } + } + return FALSE; +} +class CPDF_RefType3Cache { + public: + CPDF_RefType3Cache(CPDF_Type3Font* pType3Font) { + m_dwCount = 0; + m_pType3Font = pType3Font; + } + ~CPDF_RefType3Cache() { + while (m_dwCount--) { + ReleaseCachedType3(m_pType3Font); + } + } + FX_DWORD m_dwCount; + CPDF_Type3Font* m_pType3Font; +}; +FX_BOOL CPDF_RenderStatus::ProcessType3Text(const CPDF_TextObject* textobj, + const CFX_Matrix* pObj2Device) { + CPDF_Type3Font* pType3Font = textobj->m_TextState.GetFont()->AsType3Font(); + for (int j = 0; j < m_Type3FontCache.GetSize(); j++) { + if (m_Type3FontCache.GetAt(j) == pType3Font) + return TRUE; + } + CFX_Matrix dCTM = m_pDevice->GetCTM(); + FX_FLOAT sa = FXSYS_fabs(dCTM.a); + FX_FLOAT sd = FXSYS_fabs(dCTM.d); + CFX_Matrix text_matrix; + textobj->GetTextMatrix(&text_matrix); + CFX_Matrix char_matrix = pType3Font->GetFontMatrix(); + FX_FLOAT font_size = textobj->m_TextState.GetFontSize(); + char_matrix.Scale(font_size, font_size); + FX_ARGB fill_argb = GetFillArgb(textobj, TRUE); + int fill_alpha = FXARGB_A(fill_argb); + int device_class = m_pDevice->GetDeviceClass(); + FXTEXT_GLYPHPOS* pGlyphAndPos = NULL; + if (device_class == FXDC_DISPLAY) { + pGlyphAndPos = FX_Alloc(FXTEXT_GLYPHPOS, textobj->m_nChars); + } else if (fill_alpha < 255) { + return FALSE; + } + CPDF_RefType3Cache refTypeCache(pType3Font); + FX_DWORD* pChars = textobj->m_pCharCodes; + if (textobj->m_nChars == 1) { + pChars = (FX_DWORD*)(&textobj->m_pCharCodes); + } + for (int iChar = 0; iChar < textobj->m_nChars; iChar++) { + FX_DWORD charcode = pChars[iChar]; + if (charcode == (FX_DWORD)-1) { + continue; + } + CPDF_Type3Char* pType3Char = pType3Font->LoadChar(charcode); + if (!pType3Char) { + continue; + } + CFX_Matrix matrix = char_matrix; + matrix.e += iChar ? textobj->m_pCharPos[iChar - 1] : 0; + matrix.Concat(text_matrix); + matrix.Concat(*pObj2Device); + if (!pType3Char->LoadBitmap(m_pContext)) { + if (pGlyphAndPos) { + for (int i = 0; i < iChar; i++) { + FXTEXT_GLYPHPOS& glyph = pGlyphAndPos[i]; + if (!glyph.m_pGlyph) { + continue; + } + m_pDevice->SetBitMask(&glyph.m_pGlyph->m_Bitmap, + glyph.m_OriginX + glyph.m_pGlyph->m_Left, + glyph.m_OriginY - glyph.m_pGlyph->m_Top, + fill_argb); + } + FX_Free(pGlyphAndPos); + pGlyphAndPos = NULL; + } + CPDF_GraphicStates* pStates = CloneObjStates(textobj, FALSE); + CPDF_RenderOptions Options = m_Options; + Options.m_Flags |= RENDER_FORCE_HALFTONE | RENDER_RECT_AA; + Options.m_Flags &= ~RENDER_FORCE_DOWNSAMPLE; + CPDF_Dictionary* pFormResource = NULL; + if (pType3Char->m_pForm && pType3Char->m_pForm->m_pFormDict) { + pFormResource = + pType3Char->m_pForm->m_pFormDict->GetDictBy("Resources"); + } + if (fill_alpha == 255) { + CPDF_RenderStatus status; + status.Initialize(m_pContext, m_pDevice, NULL, NULL, this, pStates, + &Options, pType3Char->m_pForm->m_Transparency, + m_bDropObjects, pFormResource, FALSE, pType3Char, + fill_argb); + status.m_Type3FontCache.Append(m_Type3FontCache); + status.m_Type3FontCache.Add(pType3Font); + m_pDevice->SaveState(); + status.RenderObjectList(pType3Char->m_pForm, &matrix); + m_pDevice->RestoreState(); + } else { + CFX_FloatRect rect_f = pType3Char->m_pForm->CalcBoundingBox(); + rect_f.Transform(&matrix); + FX_RECT rect = rect_f.GetOutterRect(); + CFX_FxgeDevice bitmap_device; + if (!bitmap_device.Create((int)(rect.Width() * sa), + (int)(rect.Height() * sd), FXDIB_Argb)) { + return TRUE; + } + bitmap_device.GetBitmap()->Clear(0); + CPDF_RenderStatus status; + status.Initialize(m_pContext, &bitmap_device, NULL, NULL, this, pStates, + &Options, pType3Char->m_pForm->m_Transparency, + m_bDropObjects, pFormResource, FALSE, pType3Char, + fill_argb); + status.m_Type3FontCache.Append(m_Type3FontCache); + status.m_Type3FontCache.Add(pType3Font); + matrix.TranslateI(-rect.left, -rect.top); + matrix.Scale(sa, sd); + status.RenderObjectList(pType3Char->m_pForm, &matrix); + m_pDevice->SetDIBits(bitmap_device.GetBitmap(), rect.left, rect.top); + } + delete pStates; + } else if (pType3Char->m_pBitmap) { + if (device_class == FXDC_DISPLAY) { + CPDF_Type3Cache* pCache = GetCachedType3(pType3Font); + refTypeCache.m_dwCount++; + CFX_GlyphBitmap* pBitmap = pCache->LoadGlyph(charcode, &matrix, sa, sd); + if (!pBitmap) { + continue; + } + int origin_x = FXSYS_round(matrix.e); + int origin_y = FXSYS_round(matrix.f); + if (pGlyphAndPos) { + pGlyphAndPos[iChar].m_pGlyph = pBitmap; + pGlyphAndPos[iChar].m_OriginX = origin_x; + pGlyphAndPos[iChar].m_OriginY = origin_y; + } else { + m_pDevice->SetBitMask(&pBitmap->m_Bitmap, origin_x + pBitmap->m_Left, + origin_y - pBitmap->m_Top, fill_argb); + } + } else { + CFX_Matrix image_matrix = pType3Char->m_ImageMatrix; + image_matrix.Concat(matrix); + CPDF_ImageRenderer renderer; + if (renderer.Start(this, pType3Char->m_pBitmap, fill_argb, 255, + &image_matrix, 0, FALSE)) { + renderer.Continue(NULL); + } + if (!renderer.m_Result) { + return FALSE; + } + } + } + } + if (pGlyphAndPos) { + FX_RECT rect = + FXGE_GetGlyphsBBox(pGlyphAndPos, textobj->m_nChars, 0, sa, sd); + CFX_DIBitmap bitmap; + if (!bitmap.Create((int)(rect.Width() * sa), (int)(rect.Height() * sd), + FXDIB_8bppMask)) { + FX_Free(pGlyphAndPos); + return TRUE; + } + bitmap.Clear(0); + for (int iChar = 0; iChar < textobj->m_nChars; iChar++) { + FXTEXT_GLYPHPOS& glyph = pGlyphAndPos[iChar]; + if (!glyph.m_pGlyph) { + continue; + } + bitmap.TransferBitmap( + (int)((glyph.m_OriginX + glyph.m_pGlyph->m_Left - rect.left) * sa), + (int)((glyph.m_OriginY - glyph.m_pGlyph->m_Top - rect.top) * sd), + glyph.m_pGlyph->m_Bitmap.GetWidth(), + glyph.m_pGlyph->m_Bitmap.GetHeight(), &glyph.m_pGlyph->m_Bitmap, 0, + 0); + } + m_pDevice->SetBitMask(&bitmap, rect.left, rect.top, fill_argb); + FX_Free(pGlyphAndPos); + } + return TRUE; +} +class CPDF_CharPosList { + public: + CPDF_CharPosList(); + ~CPDF_CharPosList(); + void Load(int nChars, + FX_DWORD* pCharCodes, + FX_FLOAT* pCharPos, + CPDF_Font* pFont, + FX_FLOAT font_size); + FXTEXT_CHARPOS* m_pCharPos; + FX_DWORD m_nChars; +}; + +CPDF_CharPosList::CPDF_CharPosList() { + m_pCharPos = NULL; +} +CPDF_CharPosList::~CPDF_CharPosList() { + FX_Free(m_pCharPos); +} +void CPDF_CharPosList::Load(int nChars, + FX_DWORD* pCharCodes, + FX_FLOAT* pCharPos, + CPDF_Font* pFont, + FX_FLOAT FontSize) { + m_pCharPos = FX_Alloc(FXTEXT_CHARPOS, nChars); + m_nChars = 0; + CPDF_CIDFont* pCIDFont = pFont->AsCIDFont(); + FX_BOOL bVertWriting = pCIDFont && pCIDFont->IsVertWriting(); + for (int iChar = 0; iChar < nChars; iChar++) { + FX_DWORD CharCode = + nChars == 1 ? (FX_DWORD)(uintptr_t)pCharCodes : pCharCodes[iChar]; + if (CharCode == (FX_DWORD)-1) { + continue; + } + FX_BOOL bVert = FALSE; + FXTEXT_CHARPOS& charpos = m_pCharPos[m_nChars++]; + if (pCIDFont) { + charpos.m_bFontStyle = pCIDFont->IsFontStyleFromCharCode(CharCode); + } + charpos.m_GlyphIndex = pFont->GlyphFromCharCode(CharCode, &bVert); +#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ + charpos.m_ExtGID = pFont->GlyphFromCharCodeExt(CharCode); +#endif + if (!pFont->IsEmbedded() && !pFont->IsCIDFont()) { + charpos.m_FontCharWidth = pFont->GetCharWidthF(CharCode); + } else { + charpos.m_FontCharWidth = 0; + } + charpos.m_OriginX = iChar ? pCharPos[iChar - 1] : 0; + charpos.m_OriginY = 0; + charpos.m_bGlyphAdjust = FALSE; + if (!pCIDFont) { + continue; + } + FX_WORD CID = pCIDFont->CIDFromCharCode(CharCode); + if (bVertWriting) { + charpos.m_OriginY = charpos.m_OriginX; + charpos.m_OriginX = 0; + short vx, vy; + pCIDFont->GetVertOrigin(CID, vx, vy); + charpos.m_OriginX -= FontSize * vx / 1000; + charpos.m_OriginY -= FontSize * vy / 1000; + } + const uint8_t* pTransform = pCIDFont->GetCIDTransform(CID); + if (pTransform && !bVert) { + charpos.m_AdjustMatrix[0] = pCIDFont->CIDTransformToFloat(pTransform[0]); + charpos.m_AdjustMatrix[2] = pCIDFont->CIDTransformToFloat(pTransform[2]); + charpos.m_AdjustMatrix[1] = pCIDFont->CIDTransformToFloat(pTransform[1]); + charpos.m_AdjustMatrix[3] = pCIDFont->CIDTransformToFloat(pTransform[3]); + charpos.m_OriginX += + pCIDFont->CIDTransformToFloat(pTransform[4]) * FontSize; + charpos.m_OriginY += + pCIDFont->CIDTransformToFloat(pTransform[5]) * FontSize; + charpos.m_bGlyphAdjust = TRUE; + } + } +} +FX_BOOL CPDF_TextRenderer::DrawTextPath(CFX_RenderDevice* pDevice, + int nChars, + FX_DWORD* pCharCodes, + FX_FLOAT* pCharPos, + CPDF_Font* pFont, + FX_FLOAT font_size, + const CFX_Matrix* pText2User, + const CFX_Matrix* pUser2Device, + const CFX_GraphStateData* pGraphState, + FX_ARGB fill_argb, + FX_ARGB stroke_argb, + CFX_PathData* pClippingPath, + int nFlag) { + CFX_FontCache* pCache = + pFont->m_pDocument ? pFont->m_pDocument->GetRenderData()->GetFontCache() + : NULL; + CPDF_CharPosList CharPosList; + CharPosList.Load(nChars, pCharCodes, pCharPos, pFont, font_size); + return pDevice->DrawTextPath(CharPosList.m_nChars, CharPosList.m_pCharPos, + &pFont->m_Font, pCache, font_size, pText2User, + pUser2Device, pGraphState, fill_argb, + stroke_argb, pClippingPath, nFlag); +} +void CPDF_TextRenderer::DrawTextString(CFX_RenderDevice* pDevice, + int left, + int top, + CPDF_Font* pFont, + int height, + const CFX_ByteString& str, + FX_ARGB argb) { + FX_RECT font_bbox; + pFont->GetFontBBox(font_bbox); + FX_FLOAT font_size = + (FX_FLOAT)height * 1000.0f / (FX_FLOAT)(font_bbox.top - font_bbox.bottom); + FX_FLOAT origin_x = (FX_FLOAT)left; + FX_FLOAT origin_y = + (FX_FLOAT)top + font_size * (FX_FLOAT)font_bbox.top / 1000.0f; + CFX_Matrix matrix(1.0f, 0, 0, -1.0f, 0, 0); + DrawTextString(pDevice, origin_x, origin_y, pFont, font_size, &matrix, str, + argb); +} +void CPDF_TextRenderer::DrawTextString(CFX_RenderDevice* pDevice, + FX_FLOAT origin_x, + FX_FLOAT origin_y, + CPDF_Font* pFont, + FX_FLOAT font_size, + const CFX_Matrix* pMatrix, + const CFX_ByteString& str, + FX_ARGB fill_argb, + FX_ARGB stroke_argb, + const CFX_GraphStateData* pGraphState, + const CPDF_RenderOptions* pOptions) { + int nChars = pFont->CountChar(str, str.GetLength()); + if (nChars == 0) { + return; + } + FX_DWORD charcode; + int offset = 0; + FX_DWORD* pCharCodes; + FX_FLOAT* pCharPos; + if (nChars == 1) { + charcode = pFont->GetNextChar(str, str.GetLength(), offset); + pCharCodes = (FX_DWORD*)(uintptr_t)charcode; + pCharPos = NULL; + } else { + pCharCodes = FX_Alloc(FX_DWORD, nChars); + pCharPos = FX_Alloc(FX_FLOAT, nChars - 1); + FX_FLOAT cur_pos = 0; + for (int i = 0; i < nChars; i++) { + pCharCodes[i] = pFont->GetNextChar(str, str.GetLength(), offset); + if (i) { + pCharPos[i - 1] = cur_pos; + } + cur_pos += pFont->GetCharWidthF(pCharCodes[i]) * font_size / 1000; + } + } + CFX_Matrix matrix; + if (pMatrix) + matrix = *pMatrix; + + matrix.e = origin_x; + matrix.f = origin_y; + + if (!pFont->IsType3Font()) { + if (stroke_argb == 0) { + DrawNormalText(pDevice, nChars, pCharCodes, pCharPos, pFont, font_size, + &matrix, fill_argb, pOptions); + } else { + DrawTextPath(pDevice, nChars, pCharCodes, pCharPos, pFont, font_size, + &matrix, NULL, pGraphState, fill_argb, stroke_argb, NULL); + } + } + + if (nChars > 1) { + FX_Free(pCharCodes); + FX_Free(pCharPos); + } +} +FX_BOOL CPDF_TextRenderer::DrawNormalText(CFX_RenderDevice* pDevice, + int nChars, + FX_DWORD* pCharCodes, + FX_FLOAT* pCharPos, + CPDF_Font* pFont, + FX_FLOAT font_size, + const CFX_Matrix* pText2Device, + FX_ARGB fill_argb, + const CPDF_RenderOptions* pOptions) { + CFX_FontCache* pCache = + pFont->m_pDocument ? pFont->m_pDocument->GetRenderData()->GetFontCache() + : NULL; + CPDF_CharPosList CharPosList; + CharPosList.Load(nChars, pCharCodes, pCharPos, pFont, font_size); + int FXGE_flags = 0; + if (pOptions) { + FX_DWORD dwFlags = pOptions->m_Flags; + if (dwFlags & RENDER_CLEARTYPE) { + FXGE_flags |= FXTEXT_CLEARTYPE; + if (dwFlags & RENDER_BGR_STRIPE) { + FXGE_flags |= FXTEXT_BGR_STRIPE; + } + } + if (dwFlags & RENDER_NOTEXTSMOOTH) { + FXGE_flags |= FXTEXT_NOSMOOTH; + } + if (dwFlags & RENDER_PRINTGRAPHICTEXT) { + FXGE_flags |= FXTEXT_PRINTGRAPHICTEXT; + } + if (dwFlags & RENDER_NO_NATIVETEXT) { + FXGE_flags |= FXTEXT_NO_NATIVETEXT; + } + if (dwFlags & RENDER_PRINTIMAGETEXT) { + FXGE_flags |= FXTEXT_PRINTIMAGETEXT; + } + } else { + FXGE_flags = FXTEXT_CLEARTYPE; + } + if (pFont->IsCIDFont()) { + FXGE_flags |= FXFONT_CIDFONT; + } + return pDevice->DrawNormalText(CharPosList.m_nChars, CharPosList.m_pCharPos, + &pFont->m_Font, pCache, font_size, + pText2Device, fill_argb, FXGE_flags); +} +void CPDF_RenderStatus::DrawTextPathWithPattern(const CPDF_TextObject* textobj, + const CFX_Matrix* pObj2Device, + CPDF_Font* pFont, + FX_FLOAT font_size, + const CFX_Matrix* pTextMatrix, + FX_BOOL bFill, + FX_BOOL bStroke) { + if (!bStroke) { + CPDF_PathObject path; + CPDF_TextObject* pCopy = textobj->Clone(); + path.m_bStroke = FALSE; + path.m_FillType = FXFILL_WINDING; + path.m_ClipPath.AppendTexts(&pCopy, 1); + path.m_ColorState = textobj->m_ColorState; + path.m_Path.New()->AppendRect(textobj->m_Left, textobj->m_Bottom, + textobj->m_Right, textobj->m_Top); + path.m_Left = textobj->m_Left; + path.m_Bottom = textobj->m_Bottom; + path.m_Right = textobj->m_Right; + path.m_Top = textobj->m_Top; + RenderSingleObject(&path, pObj2Device); + return; + } + CFX_FontCache* pCache; + if (pFont->m_pDocument) { + pCache = pFont->m_pDocument->GetRenderData()->GetFontCache(); + } else { + pCache = CFX_GEModule::Get()->GetFontCache(); + } + CFX_FaceCache* pFaceCache = pCache->GetCachedFace(&pFont->m_Font); + FX_FONTCACHE_DEFINE(pCache, &pFont->m_Font); + CPDF_CharPosList CharPosList; + CharPosList.Load(textobj->m_nChars, textobj->m_pCharCodes, + textobj->m_pCharPos, pFont, font_size); + for (FX_DWORD i = 0; i < CharPosList.m_nChars; i++) { + FXTEXT_CHARPOS& charpos = CharPosList.m_pCharPos[i]; + const CFX_PathData* pPath = pFaceCache->LoadGlyphPath( + &pFont->m_Font, charpos.m_GlyphIndex, charpos.m_FontCharWidth); + if (!pPath) { + continue; + } + CPDF_PathObject path; + path.m_GraphState = textobj->m_GraphState; + path.m_ColorState = textobj->m_ColorState; + CFX_Matrix matrix; + if (charpos.m_bGlyphAdjust) + matrix.Set(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1], + charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3], 0, 0); + matrix.Concat(font_size, 0, 0, font_size, charpos.m_OriginX, + charpos.m_OriginY); + path.m_Path.New()->Append(pPath, &matrix); + path.m_Matrix = *pTextMatrix; + path.m_bStroke = bStroke; + path.m_FillType = bFill ? FXFILL_WINDING : 0; + path.CalcBoundingBox(); + ProcessPath(&path, pObj2Device); + } +} diff --git a/core/fpdfapi/fpdf_render/render_int.h b/core/fpdfapi/fpdf_render/render_int.h new file mode 100644 index 0000000000..c15612466c --- /dev/null +++ b/core/fpdfapi/fpdf_render/render_int.h @@ -0,0 +1,619 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#ifndef CORE_FPDFAPI_FPDF_RENDER_RENDER_INT_H_ +#define CORE_FPDFAPI_FPDF_RENDER_RENDER_INT_H_ + +#include +#include + +#include "core/include/fpdfapi/fpdf_pageobj.h" +#include "core/include/fpdfapi/fpdf_render.h" + +class CFX_GlyphBitmap; +class CFX_ImageTransformer; +class CPDF_ImageCacheEntry; +class CPDF_ImageLoaderHandle; +class ICodec_ScanlineDecoder; + +#define TYPE3_MAX_BLUES 16 + +class CPDF_Type3Glyphs { + public: + CPDF_Type3Glyphs() : m_TopBlueCount(0), m_BottomBlueCount(0) {} + ~CPDF_Type3Glyphs(); + void AdjustBlue(FX_FLOAT top, + FX_FLOAT bottom, + int& top_line, + int& bottom_line); + + std::map m_GlyphMap; + int m_TopBlue[TYPE3_MAX_BLUES]; + int m_BottomBlue[TYPE3_MAX_BLUES]; + int m_TopBlueCount; + int m_BottomBlueCount; +}; +class CPDF_Type3Cache { + public: + explicit CPDF_Type3Cache(CPDF_Type3Font* pFont) : m_pFont(pFont) {} + ~CPDF_Type3Cache(); + + CFX_GlyphBitmap* LoadGlyph(FX_DWORD charcode, + const CFX_Matrix* pMatrix, + FX_FLOAT retinaScaleX = 1.0f, + FX_FLOAT retinaScaleY = 1.0f); + + protected: + CFX_GlyphBitmap* RenderGlyph(CPDF_Type3Glyphs* pSize, + FX_DWORD charcode, + const CFX_Matrix* pMatrix, + FX_FLOAT retinaScaleX = 1.0f, + FX_FLOAT retinaScaleY = 1.0f); + CPDF_Type3Font* const m_pFont; + std::map m_SizeMap; +}; + +class CPDF_TransferFunc { + public: + explicit CPDF_TransferFunc(CPDF_Document* pDoc); + + FX_COLORREF TranslateColor(FX_COLORREF src) const; + CFX_DIBSource* TranslateImage(const CFX_DIBSource* pSrc, + FX_BOOL bAutoDropSrc); + + CPDF_Document* const m_pPDFDoc; + FX_BOOL m_bIdentity; + uint8_t m_Samples[256 * 3]; +}; + +class CPDF_DocRenderData { + public: + CPDF_DocRenderData(CPDF_Document* pPDFDoc = NULL); + ~CPDF_DocRenderData(); + CPDF_Type3Cache* GetCachedType3(CPDF_Type3Font* pFont); + CPDF_TransferFunc* GetTransferFunc(CPDF_Object* pObj); + CFX_FontCache* GetFontCache() { return m_pFontCache; } + void Clear(FX_BOOL bRelease = FALSE); + void ReleaseCachedType3(CPDF_Type3Font* pFont); + void ReleaseTransferFunc(CPDF_Object* pObj); + + private: + using CPDF_Type3CacheMap = + std::map*>; + using CPDF_TransferFuncMap = + std::map*>; + + CPDF_Document* m_pPDFDoc; + CFX_FontCache* m_pFontCache; + CPDF_Type3CacheMap m_Type3FaceMap; + CPDF_TransferFuncMap m_TransferFuncMap; +}; + +class IPDF_ObjectRenderer { + public: + static IPDF_ObjectRenderer* Create(); + virtual ~IPDF_ObjectRenderer() {} + virtual FX_BOOL Start(CPDF_RenderStatus* pRenderStatus, + const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bStdCS, + int blendType = FXDIB_BLEND_NORMAL) = 0; + virtual FX_BOOL Continue(IFX_Pause* pPause) = 0; + FX_BOOL m_Result; +}; + +class CPDF_RenderStatus { + public: + CPDF_RenderStatus(); + ~CPDF_RenderStatus(); + FX_BOOL Initialize(class CPDF_RenderContext* pContext, + CFX_RenderDevice* pDevice, + const CFX_Matrix* pDeviceMatrix, + const CPDF_PageObject* pStopObj, + const CPDF_RenderStatus* pParentStatus, + const CPDF_GraphicStates* pInitialStates, + const CPDF_RenderOptions* pOptions, + int transparency, + FX_BOOL bDropObjects, + CPDF_Dictionary* pFormResource = NULL, + FX_BOOL bStdCS = FALSE, + CPDF_Type3Char* pType3Char = NULL, + FX_ARGB fill_color = 0, + FX_DWORD GroupFamily = 0, + FX_BOOL bLoadMask = FALSE); + void RenderObjectList(const CPDF_PageObjectHolder* pObjectHolder, + const CFX_Matrix* pObj2Device); + void RenderSingleObject(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device); + FX_BOOL ContinueSingleObject(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device, + IFX_Pause* pPause); + CPDF_RenderContext* GetContext() { return m_pContext; } + + CPDF_RenderOptions m_Options; + CPDF_Dictionary* m_pFormResource; + CPDF_Dictionary* m_pPageResource; + CFX_ArrayTemplate m_Type3FontCache; + + protected: + friend class CPDF_ImageRenderer; + friend class CPDF_RenderContext; + void ProcessClipPath(CPDF_ClipPath ClipPath, const CFX_Matrix* pObj2Device); + void DrawClipPath(CPDF_ClipPath ClipPath, const CFX_Matrix* pObj2Device); + FX_BOOL ProcessTransparency(const CPDF_PageObject* PageObj, + const CFX_Matrix* pObj2Device); + void ProcessObjectNoClip(const CPDF_PageObject* PageObj, + const CFX_Matrix* pObj2Device); + void DrawObjWithBackground(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device); + FX_BOOL DrawObjWithBlend(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device); + FX_BOOL ProcessPath(const CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device); + void ProcessPathPattern(const CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device, + int& filltype, + FX_BOOL& bStroke); + void DrawPathWithPattern(const CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device, + CPDF_Color* pColor, + FX_BOOL bStroke); + void DrawTilingPattern(CPDF_TilingPattern* pPattern, + const CPDF_PageObject* pPageObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bStroke); + void DrawShadingPattern(CPDF_ShadingPattern* pPattern, + const CPDF_PageObject* pPageObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bStroke); + FX_BOOL SelectClipPath(const CPDF_PathObject* pPathObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bStroke); + FX_BOOL ProcessImage(const CPDF_ImageObject* pImageObj, + const CFX_Matrix* pObj2Device); + FX_BOOL OutputBitmapAlpha(CPDF_ImageObject* pImageObj, + const CFX_Matrix* pImage2Device); + FX_BOOL OutputImage(CPDF_ImageObject* pImageObj, + const CFX_Matrix* pImage2Device); + FX_BOOL OutputDIBSource(const CFX_DIBSource* pOutputBitmap, + FX_ARGB fill_argb, + int bitmap_alpha, + const CFX_Matrix* pImage2Device, + CPDF_ImageCacheEntry* pImageCache, + FX_DWORD flags); + void CompositeDIBitmap(CFX_DIBitmap* pDIBitmap, + int left, + int top, + FX_ARGB mask_argb, + int bitmap_alpha, + int blend_mode, + int bIsolated); + FX_BOOL ProcessShading(const CPDF_ShadingObject* pShadingObj, + const CFX_Matrix* pObj2Device); + void DrawShading(CPDF_ShadingPattern* pPattern, + CFX_Matrix* pMatrix, + FX_RECT& clip_rect, + int alpha, + FX_BOOL bAlphaMode); + FX_BOOL ProcessType3Text(const CPDF_TextObject* textobj, + const CFX_Matrix* pObj2Device); + FX_BOOL ProcessText(const CPDF_TextObject* textobj, + const CFX_Matrix* pObj2Device, + CFX_PathData* pClippingPath); + void DrawTextPathWithPattern(const CPDF_TextObject* textobj, + const CFX_Matrix* pObj2Device, + CPDF_Font* pFont, + FX_FLOAT font_size, + const CFX_Matrix* pTextMatrix, + FX_BOOL bFill, + FX_BOOL bStroke); + FX_BOOL ProcessForm(const CPDF_FormObject* pFormObj, + const CFX_Matrix* pObj2Device); + CFX_DIBitmap* GetBackdrop(const CPDF_PageObject* pObj, + const FX_RECT& rect, + int& left, + int& top, + FX_BOOL bBackAlphaRequired); + CFX_DIBitmap* LoadSMask(CPDF_Dictionary* pSMaskDict, + FX_RECT* pClipRect, + const CFX_Matrix* pMatrix); + void Init(CPDF_RenderContext* pParent); + static class CPDF_Type3Cache* GetCachedType3(CPDF_Type3Font* pFont); + static CPDF_GraphicStates* CloneObjStates(const CPDF_GraphicStates* pPathObj, + FX_BOOL bStroke); + CPDF_TransferFunc* GetTransferFunc(CPDF_Object* pObject) const; + FX_ARGB GetFillArgb(const CPDF_PageObject* pObj, + FX_BOOL bType3 = FALSE) const; + FX_ARGB GetStrokeArgb(const CPDF_PageObject* pObj) const; + CPDF_RenderContext* m_pContext; + FX_BOOL m_bStopped; + void DitherObjectArea(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device); + FX_BOOL GetObjectClippedRect(const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bLogical, + FX_RECT& rect) const; + void GetScaledMatrix(CFX_Matrix& matrix) const; + + protected: + static const int kRenderMaxRecursionDepth = 64; + static int s_CurrentRecursionDepth; + + CFX_RenderDevice* m_pDevice; + CFX_Matrix m_DeviceMatrix; + CPDF_ClipPath m_LastClipPath; + const CPDF_PageObject* m_pCurObj; + const CPDF_PageObject* m_pStopObj; + CPDF_GraphicStates m_InitialStates; + int m_HalftoneLimit; + std::unique_ptr m_pObjectRenderer; + FX_BOOL m_bPrint; + int m_Transparency; + int m_DitherBits; + FX_BOOL m_bDropObjects; + FX_BOOL m_bStdCS; + FX_DWORD m_GroupFamily; + FX_BOOL m_bLoadMask; + CPDF_Type3Char* m_pType3Char; + FX_ARGB m_T3FillColor; + int m_curBlend; +}; +class CPDF_ImageLoader { + public: + CPDF_ImageLoader() + : m_pBitmap(nullptr), + m_pMask(nullptr), + m_MatteColor(0), + m_bCached(FALSE), + m_nDownsampleWidth(0), + m_nDownsampleHeight(0) {} + ~CPDF_ImageLoader(); + + FX_BOOL Start(const CPDF_ImageObject* pImage, + CPDF_PageRenderCache* pCache, + CPDF_ImageLoaderHandle*& LoadHandle, + FX_BOOL bStdCS = FALSE, + FX_DWORD GroupFamily = 0, + FX_BOOL bLoadMask = FALSE, + CPDF_RenderStatus* pRenderStatus = NULL, + int32_t nDownsampleWidth = 0, + int32_t nDownsampleHeight = 0); + FX_BOOL Continue(CPDF_ImageLoaderHandle* LoadHandle, IFX_Pause* pPause); + + CFX_DIBSource* m_pBitmap; + CFX_DIBSource* m_pMask; + FX_DWORD m_MatteColor; + FX_BOOL m_bCached; + + protected: + int32_t m_nDownsampleWidth; + int32_t m_nDownsampleHeight; +}; +class CPDF_ImageLoaderHandle { + public: + CPDF_ImageLoaderHandle(); + ~CPDF_ImageLoaderHandle(); + + FX_BOOL Start(CPDF_ImageLoader* pImageLoader, + const CPDF_ImageObject* pImage, + CPDF_PageRenderCache* pCache, + FX_BOOL bStdCS = FALSE, + FX_DWORD GroupFamily = 0, + FX_BOOL bLoadMask = FALSE, + CPDF_RenderStatus* pRenderStatus = NULL, + int32_t nDownsampleWidth = 0, + int32_t nDownsampleHeight = 0); + FX_BOOL Continue(IFX_Pause* pPause); + + protected: + CPDF_ImageLoader* m_pImageLoader; + CPDF_PageRenderCache* m_pCache; + CPDF_ImageObject* m_pImage; + int32_t m_nDownsampleWidth; + int32_t m_nDownsampleHeight; +}; + +class CPDF_ImageRenderer : public IPDF_ObjectRenderer { + public: + CPDF_ImageRenderer(); + ~CPDF_ImageRenderer() override; + + // IPDF_ObjectRenderer + FX_BOOL Start(CPDF_RenderStatus* pStatus, + const CPDF_PageObject* pObj, + const CFX_Matrix* pObj2Device, + FX_BOOL bStdCS, + int blendType = FXDIB_BLEND_NORMAL) override; + FX_BOOL Continue(IFX_Pause* pPause) override; + + FX_BOOL Start(CPDF_RenderStatus* pStatus, + const CFX_DIBSource* pDIBSource, + FX_ARGB bitmap_argb, + int bitmap_alpha, + const CFX_Matrix* pImage2Device, + FX_DWORD flags, + FX_BOOL bStdCS, + int blendType = FXDIB_BLEND_NORMAL); + + protected: + CPDF_RenderStatus* m_pRenderStatus; + const CPDF_ImageObject* m_pImageObject; + int m_Status; + const CFX_Matrix* m_pObj2Device; + CFX_Matrix m_ImageMatrix; + CPDF_ImageLoader m_Loader; + const CFX_DIBSource* m_pDIBSource; + CFX_DIBitmap* m_pClone; + int m_BitmapAlpha; + FX_BOOL m_bPatternColor; + CPDF_Pattern* m_pPattern; + FX_ARGB m_FillArgb; + FX_DWORD m_Flags; + CFX_ImageTransformer* m_pTransformer; + void* m_DeviceHandle; + CPDF_ImageLoaderHandle* m_LoadHandle; + FX_BOOL m_bStdCS; + int m_BlendType; + FX_BOOL StartBitmapAlpha(); + FX_BOOL StartDIBSource(); + FX_BOOL StartRenderDIBSource(); + FX_BOOL StartLoadDIBSource(); + FX_BOOL DrawMaskedImage(); + FX_BOOL DrawPatternImage(const CFX_Matrix* pObj2Device); +}; + +class CPDF_ScaledRenderBuffer { + public: + CPDF_ScaledRenderBuffer(); + ~CPDF_ScaledRenderBuffer(); + + FX_BOOL Initialize(CPDF_RenderContext* pContext, + CFX_RenderDevice* pDevice, + const FX_RECT& pRect, + const CPDF_PageObject* pObj, + const CPDF_RenderOptions* pOptions = NULL, + int max_dpi = 0); + CFX_RenderDevice* GetDevice() { + return m_pBitmapDevice ? m_pBitmapDevice.get() : m_pDevice; + } + CFX_Matrix* GetMatrix() { return &m_Matrix; } + void OutputToDevice(); + + private: + CFX_RenderDevice* m_pDevice; + CPDF_RenderContext* m_pContext; + FX_RECT m_Rect; + const CPDF_PageObject* m_pObject; + std::unique_ptr m_pBitmapDevice; + CFX_Matrix m_Matrix; +}; + +class CPDF_DeviceBuffer { + public: + CPDF_DeviceBuffer(); + ~CPDF_DeviceBuffer(); + FX_BOOL Initialize(CPDF_RenderContext* pContext, + CFX_RenderDevice* pDevice, + FX_RECT* pRect, + const CPDF_PageObject* pObj, + int max_dpi = 0); + void OutputToDevice(); + CFX_DIBitmap* GetBitmap() const { return m_pBitmap.get(); } + const CFX_Matrix* GetMatrix() const { return &m_Matrix; } + + private: + CFX_RenderDevice* m_pDevice; + CPDF_RenderContext* m_pContext; + FX_RECT m_Rect; + const CPDF_PageObject* m_pObject; + std::unique_ptr m_pBitmap; + CFX_Matrix m_Matrix; +}; + +class CPDF_ImageCacheEntry { + public: + CPDF_ImageCacheEntry(CPDF_Document* pDoc, CPDF_Stream* pStream); + ~CPDF_ImageCacheEntry(); + void ClearImageData(); + void Reset(const CFX_DIBitmap* pBitmap); + FX_BOOL GetCachedBitmap(CFX_DIBSource*& pBitmap, + CFX_DIBSource*& pMask, + FX_DWORD& MatteColor, + CPDF_Dictionary* pPageResources, + FX_BOOL bStdCS = FALSE, + FX_DWORD GroupFamily = 0, + FX_BOOL bLoadMask = FALSE, + CPDF_RenderStatus* pRenderStatus = NULL, + int32_t downsampleWidth = 0, + int32_t downsampleHeight = 0); + FX_DWORD EstimateSize() const { return m_dwCacheSize; } + FX_DWORD GetTimeCount() const { return m_dwTimeCount; } + CPDF_Stream* GetStream() const { return m_pStream; } + void SetTimeCount(FX_DWORD dwTimeCount) { m_dwTimeCount = dwTimeCount; } + int m_dwTimeCount; + + public: + int StartGetCachedBitmap(CPDF_Dictionary* pFormResources, + CPDF_Dictionary* pPageResources, + FX_BOOL bStdCS = FALSE, + FX_DWORD GroupFamily = 0, + FX_BOOL bLoadMask = FALSE, + CPDF_RenderStatus* pRenderStatus = NULL, + int32_t downsampleWidth = 0, + int32_t downsampleHeight = 0); + int Continue(IFX_Pause* pPause); + CFX_DIBSource* DetachBitmap(); + CFX_DIBSource* DetachMask(); + CFX_DIBSource* m_pCurBitmap; + CFX_DIBSource* m_pCurMask; + FX_DWORD m_MatteColor; + CPDF_RenderStatus* m_pRenderStatus; + + protected: + void ContinueGetCachedBitmap(); + + CPDF_Document* m_pDocument; + CPDF_Stream* m_pStream; + CFX_DIBSource* m_pCachedBitmap; + CFX_DIBSource* m_pCachedMask; + FX_DWORD m_dwCacheSize; + void CalcSize(); +}; +typedef struct { + FX_FLOAT m_DecodeMin; + FX_FLOAT m_DecodeStep; + int m_ColorKeyMin; + int m_ColorKeyMax; +} DIB_COMP_DATA; + +class CPDF_DIBSource : public CFX_DIBSource { + public: + CPDF_DIBSource(); + ~CPDF_DIBSource() override; + + FX_BOOL Load(CPDF_Document* pDoc, + const CPDF_Stream* pStream, + CPDF_DIBSource** ppMask, + FX_DWORD* pMatteColor, + CPDF_Dictionary* pFormResources, + CPDF_Dictionary* pPageResources, + FX_BOOL bStdCS = FALSE, + FX_DWORD GroupFamily = 0, + FX_BOOL bLoadMask = FALSE); + + // CFX_DIBSource + FX_BOOL SkipToScanline(int line, IFX_Pause* pPause) const override; + uint8_t* GetBuffer() const override; + const uint8_t* GetScanline(int line) const override; + void DownSampleScanline(int line, + uint8_t* dest_scan, + int dest_bpp, + int dest_width, + FX_BOOL bFlipX, + int clip_left, + int clip_width) const override; + void SetDownSampleSize(int dest_width, int dest_height) override; + + CFX_DIBitmap* GetBitmap() const; + void ReleaseBitmap(CFX_DIBitmap* pBitmap) const; + void ClearImageData(); + FX_DWORD GetMatteColor() const { return m_MatteColor; } + + int StartLoadDIBSource(CPDF_Document* pDoc, + const CPDF_Stream* pStream, + FX_BOOL bHasMask, + CPDF_Dictionary* pFormResources, + CPDF_Dictionary* pPageResources, + FX_BOOL bStdCS = FALSE, + FX_DWORD GroupFamily = 0, + FX_BOOL bLoadMask = FALSE); + int ContinueLoadDIBSource(IFX_Pause* pPause); + int StratLoadMask(); + int StartLoadMaskDIB(); + int ContinueLoadMaskDIB(IFX_Pause* pPause); + int ContinueToLoadMask(); + CPDF_DIBSource* DetachMask(); + + private: + bool LoadColorInfo(const CPDF_Dictionary* pFormResources, + const CPDF_Dictionary* pPageResources); + DIB_COMP_DATA* GetDecodeAndMaskArray(FX_BOOL& bDefaultDecode, + FX_BOOL& bColorKey); + CPDF_DIBSource* LoadMask(FX_DWORD& MatteColor); + CPDF_DIBSource* LoadMaskDIB(CPDF_Stream* pMask); + void LoadJpxBitmap(); + void LoadPalette(); + int CreateDecoder(); + void TranslateScanline24bpp(uint8_t* dest_scan, + const uint8_t* src_scan) const; + void ValidateDictParam(); + void DownSampleScanline1Bit(int orig_Bpp, + int dest_Bpp, + FX_DWORD src_width, + const uint8_t* pSrcLine, + uint8_t* dest_scan, + int dest_width, + FX_BOOL bFlipX, + int clip_left, + int clip_width) const; + void DownSampleScanline8Bit(int orig_Bpp, + int dest_Bpp, + FX_DWORD src_width, + const uint8_t* pSrcLine, + uint8_t* dest_scan, + int dest_width, + FX_BOOL bFlipX, + int clip_left, + int clip_width) const; + void DownSampleScanline32Bit(int orig_Bpp, + int dest_Bpp, + FX_DWORD src_width, + const uint8_t* pSrcLine, + uint8_t* dest_scan, + int dest_width, + FX_BOOL bFlipX, + int clip_left, + int clip_width) const; + FX_BOOL TransMask() const; + + CPDF_Document* m_pDocument; + const CPDF_Stream* m_pStream; + std::unique_ptr m_pStreamAcc; + const CPDF_Dictionary* m_pDict; + CPDF_ColorSpace* m_pColorSpace; + FX_DWORD m_Family; + FX_DWORD m_bpc; + FX_DWORD m_bpc_orig; + FX_DWORD m_nComponents; + FX_DWORD m_GroupFamily; + FX_DWORD m_MatteColor; + FX_BOOL m_bLoadMask; + FX_BOOL m_bDefaultDecode; + FX_BOOL m_bImageMask; + FX_BOOL m_bDoBpcCheck; + FX_BOOL m_bColorKey; + FX_BOOL m_bHasMask; + FX_BOOL m_bStdCS; + DIB_COMP_DATA* m_pCompData; + uint8_t* m_pLineBuf; + uint8_t* m_pMaskedLine; + std::unique_ptr m_pCachedBitmap; + std::unique_ptr m_pDecoder; + void* m_pJbig2Context; + CPDF_DIBSource* m_pMask; + std::unique_ptr m_pGlobalStream; + CPDF_Stream* m_pMaskStream; + int m_Status; +}; + +#define FPDF_HUGE_IMAGE_SIZE 60000000 +class CPDF_DIBTransferFunc : public CFX_FilteredDIB { + public: + CPDF_DIBTransferFunc(const CPDF_TransferFunc* pTransferFunc); + ~CPDF_DIBTransferFunc() override; + + // CFX_FilteredDIB + FXDIB_Format GetDestFormat() override; + FX_ARGB* GetDestPalette() override { return NULL; } + void TranslateScanline(uint8_t* dest_buf, + const uint8_t* src_buf) const override; + void TranslateDownSamples(uint8_t* dest_buf, + const uint8_t* src_buf, + int pixels, + int Bpp) const override; + + const uint8_t* m_RampR; + const uint8_t* m_RampG; + const uint8_t* m_RampB; +}; + +struct _CPDF_UniqueKeyGen { + void Generate(int count, ...); + FX_CHAR m_Key[128]; + int m_KeyLen; +}; + +#endif // CORE_FPDFAPI_FPDF_RENDER_RENDER_INT_H_ -- cgit v1.2.3