diff options
Diffstat (limited to 'core/fpdfapi/fpdf_render/fpdf_render.cpp')
| -rw-r--r-- | core/fpdfapi/fpdf_render/fpdf_render.cpp | 1337 |
1 files changed, 1337 insertions, 0 deletions
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<CPDF_Type3Cache>* 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<CPDF_TransferFunc>* 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<CPDF_Type3Cache>* pCache; + auto it = m_Type3FaceMap.find(pFont); + if (it == m_Type3FaceMap.end()) { + CPDF_Type3Cache* pType3 = new CPDF_Type3Cache(pFont); + pCache = new CPDF_CountedObject<CPDF_Type3Cache>(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<int> 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<CFX_PathData> 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<CFX_DIBitmap> 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<CFX_DIBitmap> 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<CFX_DIBSource> 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<CFX_DIBitmap> 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<CPDF_TransferFunc>* pTransferCounter = it->second; + return pTransferCounter->AddRef(); + } + + std::unique_ptr<CPDF_Function> 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<CPDF_TransferFunc>* pTransferCounter = + new CPDF_CountedObject<CPDF_TransferFunc>(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; +} |