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authordsinclair <dsinclair@chromium.org>2016-10-04 12:18:35 -0700
committerCommit bot <commit-bot@chromium.org>2016-10-04 12:18:35 -0700
commit69d9c68e705afa7a4008feb9bbeb19cea887ed47 (patch)
treeb5509c51aeeb89c99c7a4e0a60f8e5f29af5245c /core/fpdfapi/render/fpdf_render.cpp
parent488b7ad845d6de212d89cd957303b294ecfa5922 (diff)
downloadpdfium-69d9c68e705afa7a4008feb9bbeb19cea887ed47.tar.xz
Move core/fpdfapi/fpdf_render to core/fpdfapi/render
BUG=pdfium:603 Review-Url: https://codereview.chromium.org/2393593002
Diffstat (limited to 'core/fpdfapi/render/fpdf_render.cpp')
-rw-r--r--core/fpdfapi/render/fpdf_render.cpp1289
1 files changed, 1289 insertions, 0 deletions
diff --git a/core/fpdfapi/render/fpdf_render.cpp b/core/fpdfapi/render/fpdf_render.cpp
new file mode 100644
index 0000000000..5feeae8f53
--- /dev/null
+++ b/core/fpdfapi/render/fpdf_render.cpp
@@ -0,0 +1,1289 @@
+// 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/render/render_int.h"
+
+#include <memory>
+
+#include "core/fpdfapi/cpdf_modulemgr.h"
+#include "core/fpdfapi/font/cpdf_type3char.h"
+#include "core/fpdfapi/font/cpdf_type3font.h"
+#include "core/fpdfapi/page/cpdf_form.h"
+#include "core/fpdfapi/page/cpdf_formobject.h"
+#include "core/fpdfapi/page/cpdf_graphicstates.h"
+#include "core/fpdfapi/page/cpdf_image.h"
+#include "core/fpdfapi/page/cpdf_imageobject.h"
+#include "core/fpdfapi/page/cpdf_page.h"
+#include "core/fpdfapi/page/cpdf_pageobject.h"
+#include "core/fpdfapi/page/cpdf_pathobject.h"
+#include "core/fpdfapi/page/cpdf_textobject.h"
+#include "core/fpdfapi/page/pageint.h"
+#include "core/fpdfapi/parser/cpdf_array.h"
+#include "core/fpdfapi/parser/cpdf_dictionary.h"
+#include "core/fpdfapi/parser/cpdf_document.h"
+#include "core/fpdfapi/render/cpdf_pagerendercache.h"
+#include "core/fpdfapi/render/cpdf_progressiverenderer.h"
+#include "core/fpdfapi/render/cpdf_renderoptions.h"
+#include "core/fpdfapi/render/cpdf_textrenderer.h"
+#include "core/fpdfapi/render/cpdf_type3cache.h"
+#include "core/fpdfdoc/cpdf_occontext.h"
+#include "core/fxge/cfx_fxgedevice.h"
+#include "core/fxge/cfx_graphstatedata.h"
+#include "core/fxge/cfx_pathdata.h"
+#include "core/fxge/cfx_renderdevice.h"
+
+CPDF_DocRenderData::CPDF_DocRenderData(CPDF_Document* pPDFDoc)
+ : m_pPDFDoc(pPDFDoc) {}
+
+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);
+ }
+ }
+}
+
+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();
+}
+
+CPDF_RenderOptions::CPDF_RenderOptions()
+ : m_ColorMode(RENDER_COLOR_NORMAL),
+ m_Flags(RENDER_CLEARTYPE),
+ m_Interpolation(0),
+ m_AddFlags(0),
+ m_pOCContext(nullptr),
+ m_dwLimitCacheSize(1024 * 1024 * 100),
+ m_HalftoneLimit(-1),
+ m_bDrawAnnots(false) {}
+
+CPDF_RenderOptions::CPDF_RenderOptions(const CPDF_RenderOptions& rhs)
+ : m_ColorMode(rhs.m_ColorMode),
+ m_BackColor(rhs.m_BackColor),
+ m_ForeColor(rhs.m_ForeColor),
+ m_Flags(rhs.m_Flags),
+ m_Interpolation(rhs.m_Interpolation),
+ m_AddFlags(rhs.m_AddFlags),
+ m_pOCContext(rhs.m_pOCContext),
+ m_dwLimitCacheSize(rhs.m_dwLimitCacheSize),
+ m_HalftoneLimit(rhs.m_HalftoneLimit),
+ m_bDrawAnnots(rhs.m_bDrawAnnots) {}
+
+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_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,
+ uint32_t GroupFamily,
+ FX_BOOL bLoadMask) {
+ m_pContext = pContext;
+ m_pDevice = pDevice;
+ 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) {
+ if (!m_InitialStates.m_ColorState.HasFillColor()) {
+ m_InitialStates.m_ColorState.SetFillRGB(
+ pParentState->m_InitialStates.m_ColorState.GetFillRGB());
+ m_InitialStates.m_ColorState.GetMutableFillColor()->Copy(
+ pParentState->m_InitialStates.m_ColorState.GetFillColor());
+ }
+ if (!m_InitialStates.m_ColorState.HasStrokeColor()) {
+ m_InitialStates.m_ColorState.SetStrokeRGB(
+ pParentState->m_InitialStates.m_ColorState.GetFillRGB());
+ m_InitialStates.m_ColorState.GetMutableStrokeColor()->Copy(
+ pParentState->m_InitialStates.m_ColorState.GetStrokeColor());
+ }
+ }
+ } else {
+ m_InitialStates.DefaultStates();
+ }
+ m_pImageRenderer.reset();
+ m_Transparency = transparency;
+ return TRUE;
+}
+void CPDF_RenderStatus::RenderObjectList(
+ const CPDF_PageObjectHolder* pObjectHolder,
+ const CFX_Matrix* pObj2Device) {
+#if defined _SKIA_SUPPORT_
+ DebugVerifyDeviceIsPreMultiplied();
+#endif
+ 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;
+ }
+#if defined _SKIA_SUPPORT_
+ DebugVerifyDeviceIsPreMultiplied();
+#endif
+}
+
+void CPDF_RenderStatus::RenderSingleObject(CPDF_PageObject* pObj,
+ const CFX_Matrix* pObj2Device) {
+#if defined _SKIA_SUPPORT_
+ DebugVerifyDeviceIsPreMultiplied();
+#endif
+ CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
+ if (++s_CurrentRecursionDepth > kRenderMaxRecursionDepth) {
+ return;
+ }
+ m_pCurObj = pObj;
+ if (m_Options.m_pOCContext && pObj->m_ContentMark) {
+ if (!m_Options.m_pOCContext->CheckObjectVisible(pObj)) {
+ return;
+ }
+ }
+ ProcessClipPath(pObj->m_ClipPath, pObj2Device);
+ if (ProcessTransparency(pObj, pObj2Device)) {
+ return;
+ }
+ ProcessObjectNoClip(pObj, pObj2Device);
+#if defined _SKIA_SUPPORT_
+ DebugVerifyDeviceIsPreMultiplied();
+#endif
+}
+
+FX_BOOL CPDF_RenderStatus::ContinueSingleObject(CPDF_PageObject* pObj,
+ const CFX_Matrix* pObj2Device,
+ IFX_Pause* pPause) {
+ if (m_pImageRenderer) {
+ if (m_pImageRenderer->Continue(pPause))
+ return TRUE;
+
+ if (!m_pImageRenderer->m_Result)
+ DrawObjWithBackground(pObj, pObj2Device);
+ m_pImageRenderer.reset();
+ return FALSE;
+ }
+
+ m_pCurObj = pObj;
+ if (m_Options.m_pOCContext && pObj->m_ContentMark &&
+ !m_Options.m_pOCContext->CheckObjectVisible(pObj)) {
+ return FALSE;
+ }
+
+ ProcessClipPath(pObj->m_ClipPath, pObj2Device);
+ if (ProcessTransparency(pObj, pObj2Device))
+ return FALSE;
+
+ if (pObj->IsImage()) {
+ m_pImageRenderer.reset(new CPDF_ImageRenderer);
+ if (!m_pImageRenderer->Start(this, pObj, pObj2Device, FALSE)) {
+ if (!m_pImageRenderer->m_Result)
+ DrawObjWithBackground(pObj, pObj2Device);
+ m_pImageRenderer.reset();
+ return FALSE;
+ }
+ return ContinueSingleObject(pObj, pObj2Device, pPause);
+ }
+
+ ProcessObjectNoClip(pObj, pObj2Device);
+ return FALSE;
+}
+
+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::ProcessObjectNoClip(CPDF_PageObject* pObj,
+ const CFX_Matrix* pObj2Device) {
+#if defined _SKIA_SUPPORT_
+ DebugVerifyDeviceIsPreMultiplied();
+#endif
+ FX_BOOL bRet = FALSE;
+ switch (pObj->GetType()) {
+ case CPDF_PageObject::TEXT:
+ bRet = ProcessText(pObj->AsText(), pObj2Device, nullptr);
+ 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:
+ ProcessShading(pObj->AsShading(), pObj2Device);
+ return;
+ case CPDF_PageObject::FORM:
+ bRet = ProcessForm(pObj->AsForm(), pObj2Device);
+ break;
+ }
+ if (!bRet)
+ DrawObjWithBackground(pObj, pObj2Device);
+#if defined _SKIA_SUPPORT_
+ DebugVerifyDeviceIsPreMultiplied();
+#endif
+}
+
+FX_BOOL CPDF_RenderStatus::DrawObjWithBlend(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(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 = nullptr;
+ if (pObj->IsForm()) {
+ const CPDF_FormObject* pFormObj = pObj->AsForm();
+ if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) {
+ pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources");
+ }
+ }
+ CPDF_RenderStatus status;
+ status.Initialize(m_pContext, buffer.GetDevice(), buffer.GetMatrix(), nullptr,
+ nullptr, nullptr, &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) {
+#if defined _SKIA_SUPPORT_
+ DebugVerifyDeviceIsPreMultiplied();
+#endif
+ CPDF_Dictionary* pOC = pFormObj->m_pForm->m_pFormDict->GetDictFor("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 = nullptr;
+ if (pFormObj->m_pForm && pFormObj->m_pForm->m_pFormDict) {
+ pResources = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources");
+ }
+ CPDF_RenderStatus status;
+ status.Initialize(m_pContext, m_pDevice, nullptr, 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.get(), &matrix);
+ m_bStopped = status.m_bStopped;
+ m_pDevice->RestoreState(false);
+#if defined _SKIA_SUPPORT_
+ DebugVerifyDeviceIsPreMultiplied();
+#endif
+ 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(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;
+
+ uint32_t fill_argb = FillType ? GetFillArgb(pPathObj) : 0;
+ uint32_t stroke_argb = bStroke ? GetStrokeArgb(pPathObj) : 0;
+ 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_PageObject* pPageObj =
+ static_cast<const CPDF_PageObject*>(pPathObj);
+ if (pPageObj->m_GeneralState.GetStrokeAdjust())
+ FillType |= FX_STROKE_ADJUST;
+ if (m_pType3Char)
+ FillType |= FX_FILL_TEXT_MODE;
+
+ CFX_GraphState graphState = pPathObj->m_GraphState;
+ if (m_Options.m_Flags & RENDER_THINLINE)
+ graphState.SetLineWidth(0);
+ return m_pDevice->DrawPathWithBlend(
+ pPathObj->m_Path.GetObject(), &path_matrix, graphState.GetObject(),
+ fill_argb, stroke_argb, FillType, 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(CPDF_PageObject* pObj,
+ FX_BOOL bType3) const {
+ const CPDF_ColorState* pColorState = &pObj->m_ColorState;
+ if (m_pType3Char && !bType3 &&
+ (!m_pType3Char->m_bColored ||
+ (m_pType3Char->m_bColored &&
+ (!*pColorState || pColorState->GetFillColor()->IsNull())))) {
+ return m_T3FillColor;
+ }
+ if (!*pColorState || pColorState->GetFillColor()->IsNull())
+ pColorState = &m_InitialStates.m_ColorState;
+
+ FX_COLORREF rgb = pColorState->GetFillRGB();
+ if (rgb == (uint32_t)-1)
+ return 0;
+
+ int32_t alpha =
+ static_cast<int32_t>((pObj->m_GeneralState.GetFillAlpha() * 255));
+ if (pObj->m_GeneralState.GetTR()) {
+ if (!pObj->m_GeneralState.GetTransferFunc()) {
+ pObj->m_GeneralState.SetTransferFunc(
+ GetTransferFunc(pObj->m_GeneralState.GetTR()));
+ }
+ if (pObj->m_GeneralState.GetTransferFunc())
+ rgb = pObj->m_GeneralState.GetTransferFunc()->TranslateColor(rgb);
+ }
+ return m_Options.TranslateColor(ArgbEncode(alpha, rgb));
+}
+
+FX_ARGB CPDF_RenderStatus::GetStrokeArgb(CPDF_PageObject* pObj) const {
+ const CPDF_ColorState* pColorState = &pObj->m_ColorState;
+ if (m_pType3Char &&
+ (!m_pType3Char->m_bColored ||
+ (m_pType3Char->m_bColored &&
+ (!*pColorState || pColorState->GetStrokeColor()->IsNull())))) {
+ return m_T3FillColor;
+ }
+ if (!*pColorState || pColorState->GetStrokeColor()->IsNull())
+ pColorState = &m_InitialStates.m_ColorState;
+
+ FX_COLORREF rgb = pColorState->GetStrokeRGB();
+ if (rgb == (uint32_t)-1)
+ return 0;
+
+ int32_t alpha = static_cast<int32_t>(pObj->m_GeneralState.GetStrokeAlpha() *
+ 255); // not rounded.
+ if (pObj->m_GeneralState.GetTR()) {
+ if (!pObj->m_GeneralState.GetTransferFunc()) {
+ pObj->m_GeneralState.SetTransferFunc(
+ GetTransferFunc(pObj->m_GeneralState.GetTR()));
+ }
+ if (pObj->m_GeneralState.GetTransferFunc())
+ rgb = pObj->m_GeneralState.GetTransferFunc()->TranslateColor(rgb);
+ }
+ return m_Options.TranslateColor(ArgbEncode(alpha, rgb));
+}
+void CPDF_RenderStatus::ProcessClipPath(CPDF_ClipPath ClipPath,
+ const CFX_Matrix* pObj2Device) {
+ if (!ClipPath) {
+ if (m_LastClipPath) {
+ 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).GetObject();
+ 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)
+ 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).GetObject();
+ 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_GraphState graphState = pPathObj->m_GraphState;
+ if (m_Options.m_Flags & RENDER_THINLINE)
+ graphState.SetLineWidth(0);
+ return m_pDevice->SetClip_PathStroke(pPathObj->m_Path.GetObject(),
+ &path_matrix, graphState.GetObject());
+ }
+ 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.GetObject(), &path_matrix,
+ fill_mode);
+}
+FX_BOOL CPDF_RenderStatus::ProcessTransparency(CPDF_PageObject* pPageObj,
+ const CFX_Matrix* pObj2Device) {
+#if defined _SKIA_SUPPORT_
+ DebugVerifyDeviceIsPreMultiplied();
+#endif
+ int blend_type = pPageObj->m_GeneralState.GetBlendType();
+ if (blend_type == FXDIB_BLEND_UNSUPPORTED)
+ return TRUE;
+
+ CPDF_Dictionary* pSMaskDict =
+ ToDictionary(pPageObj->m_GeneralState.GetSoftMask());
+ if (pSMaskDict) {
+ if (pPageObj->IsImage() &&
+ pPageObj->AsImage()->GetImage()->GetDict()->KeyExist("SMask")) {
+ pSMaskDict = nullptr;
+ }
+ }
+ CPDF_Dictionary* pFormResource = nullptr;
+ FX_FLOAT group_alpha = 1.0f;
+ int Transparency = m_Transparency;
+ FX_BOOL bGroupTransparent = FALSE;
+ if (pPageObj->IsForm()) {
+ const CPDF_FormObject* pFormObj = pPageObj->AsForm();
+ group_alpha = pFormObj->m_GeneralState.GetFillAlpha();
+ Transparency = pFormObj->m_pForm->m_Transparency;
+ bGroupTransparent = !!(Transparency & PDFTRANS_ISOLATED);
+ if (pFormObj->m_pForm->m_pFormDict) {
+ pFormResource = pFormObj->m_pForm->m_pFormDict->GetDictFor("Resources");
+ }
+ }
+ bool bTextClip =
+ (pPageObj->m_ClipPath && pPageObj->m_ClipPath.GetTextCount() &&
+ m_pDevice->GetDeviceClass() == FXDC_DISPLAY &&
+ !(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP));
+ if ((m_Options.m_Flags & RENDER_OVERPRINT) && pPageObj->IsImage() &&
+ pPageObj->m_GeneralState.GetFillOP() &&
+ pPageObj->m_GeneralState.GetStrokeOP()) {
+ CPDF_Document* pDocument = nullptr;
+ CPDF_Page* pPage = nullptr;
+ if (m_pContext->GetPageCache()) {
+ pPage = m_pContext->GetPageCache()->GetPage();
+ pDocument = pPage->m_pDocument;
+ } else {
+ pDocument = pPageObj->AsImage()->GetImage()->GetDocument();
+ }
+ CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : nullptr;
+ CPDF_Object* pCSObj = pPageObj->AsImage()
+ ->GetImage()
+ ->GetStream()
+ ->GetDict()
+ ->GetDirectObjectFor("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;
+ }
+ 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, 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(), false, nullptr, false);
+ for (uint32_t 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.GetObject(), (FX_ARGB)-1, 0, nullptr, 0);
+ }
+ }
+ CPDF_RenderStatus bitmap_render;
+ bitmap_render.Initialize(m_pContext, &bitmap_device, nullptr, m_pStopObj,
+ nullptr, nullptr, &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 = *pPageObj->m_GeneralState.GetSMaskMatrix();
+ 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();
+ }
+ int32_t blitAlpha = 255;
+ if (Transparency & PDFTRANS_GROUP && group_alpha != 1.0f) {
+ blitAlpha = (int32_t)(group_alpha * 255);
+#ifndef _SKIA_SUPPORT_
+ bitmap->MultiplyAlpha(blitAlpha);
+ blitAlpha = 255;
+#endif
+ }
+ Transparency = m_Transparency;
+ if (pPageObj->IsForm()) {
+ Transparency |= PDFTRANS_GROUP;
+ }
+ CompositeDIBitmap(bitmap, rect.left, rect.top, 0, blitAlpha, blend_type,
+ Transparency);
+#if defined _SKIA_SUPPORT_
+ DebugVerifyDeviceIsPreMultiplied();
+#endif
+ 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(), false, nullptr, false);
+ 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, false, nullptr, false);
+
+ 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 nullptr;
+
+ CPDF_GraphicStates* pStates = new CPDF_GraphicStates;
+ pStates->CopyStates(*pSrcStates);
+ const CPDF_Color* pObjColor = bStroke
+ ? pSrcStates->m_ColorState.GetStrokeColor()
+ : pSrcStates->m_ColorState.GetFillColor();
+ if (!pObjColor->IsNull()) {
+ pStates->m_ColorState.SetFillRGB(
+ bStroke ? pSrcStates->m_ColorState.GetStrokeRGB()
+ : pSrcStates->m_ColorState.GetFillRGB());
+ pStates->m_ColorState.SetStrokeRGB(pStates->m_ColorState.GetFillRGB());
+ }
+ return pStates;
+}
+
+CPDF_RenderContext::CPDF_RenderContext(CPDF_Page* pPage)
+ : m_pDocument(pPage->m_pDocument),
+ m_pPageResources(pPage->m_pPageResources),
+ m_pPageCache(pPage->GetRenderCache()) {}
+
+CPDF_RenderContext::CPDF_RenderContext(CPDF_Document* pDoc,
+ CPDF_PageRenderCache* pPageCache)
+ : m_pDocument(pDoc), m_pPageResources(nullptr), m_pPageCache(pPageCache) {}
+
+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, nullptr, 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, nullptr, nullptr,
+ pOptions, pLayer->m_pObjectHolder->m_Transparency,
+ FALSE, nullptr);
+ 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(false);
+ break;
+ }
+ } else {
+ CPDF_RenderStatus status;
+ status.Initialize(this, pDevice, nullptr, pStopObj, nullptr, nullptr,
+ pOptions, pLayer->m_pObjectHolder->m_Transparency,
+ FALSE, nullptr);
+ 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(false);
+ break;
+ }
+ }
+ pDevice->RestoreState(false);
+ }
+}
+
+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(false);
+}
+
+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, nullptr, nullptr, nullptr, nullptr, m_pOptions,
+ m_pCurrentLayer->m_pObjectHolder->m_Transparency, FALSE, nullptr);
+ 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(false);
+ 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 (uint32_t i = 0; i < 3; ++i) {
+ pFuncs[2 - i] = CPDF_Function::Load(pArray->GetDirectObjectAt(i));
+ if (!pFuncs[2 - i])
+ return nullptr;
+ }
+ } else {
+ pFuncs[0] = 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.GetOuterRect();
+ 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, nullptr, &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.GetOuterRect();
+ 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, nullptr)) {
+ 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());
+ }
+}
+
+#if defined _SKIA_SUPPORT_
+void CPDF_RenderStatus::DebugVerifyDeviceIsPreMultiplied() const {
+ m_pDevice->DebugVerifyBitmapIsPreMultiplied();
+}
+#endif