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pdfium/pdfium.git/b29de118877984c6e28edc1ec85cd35e49f0e9ea/./core/fpdfapi/render/cpdf_renderstatus.cpp
blob: 79d31b95d0afdc8efb7a015a7d1bd14d51f70834 [file]
// Copyright 2016 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/cpdf_renderstatus.h"
#include <algorithm>
#include <cmath>
#include <limits>
#include <memory>
#include <numeric>
#include <set>
#include <utility>
#include <vector>
#include "build/build_config.h"
#include "constants/transparency.h"
#include "core/fpdfapi/font/cpdf_font.h"
#include "core/fpdfapi/font/cpdf_type3char.h"
#include "core/fpdfapi/font/cpdf_type3font.h"
#include "core/fpdfapi/page/cpdf_docpagedata.h"
#include "core/fpdfapi/page/cpdf_form.h"
#include "core/fpdfapi/page/cpdf_formobject.h"
#include "core/fpdfapi/page/cpdf_function.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_occontext.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_shadingobject.h"
#include "core/fpdfapi/page/cpdf_shadingpattern.h"
#include "core/fpdfapi/page/cpdf_textobject.h"
#include "core/fpdfapi/page/cpdf_tilingpattern.h"
#include "core/fpdfapi/page/cpdf_transferfunc.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_document.h"
#include "core/fpdfapi/parser/cpdf_stream.h"
#include "core/fpdfapi/parser/fpdf_parser_utility.h"
#include "core/fpdfapi/render/cpdf_charposlist.h"
#include "core/fpdfapi/render/cpdf_docrenderdata.h"
#include "core/fpdfapi/render/cpdf_imagerenderer.h"
#include "core/fpdfapi/render/cpdf_pagerendercache.h"
#include "core/fpdfapi/render/cpdf_rendercontext.h"
#include "core/fpdfapi/render/cpdf_renderoptions.h"
#include "core/fpdfapi/render/cpdf_rendershading.h"
#include "core/fpdfapi/render/cpdf_scaledrenderbuffer.h"
#include "core/fpdfapi/render/cpdf_textrenderer.h"
#include "core/fpdfapi/render/cpdf_type3cache.h"
#include "core/fxcrt/autorestorer.h"
#include "core/fxcrt/fx_safe_types.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxge/cfx_defaultrenderdevice.h"
#include "core/fxge/cfx_glyphbitmap.h"
#include "core/fxge/cfx_pathdata.h"
#include "core/fxge/dib/cfx_dibitmap.h"
#include "core/fxge/fx_font.h"
#include "core/fxge/renderdevicedriver_iface.h"
#include "core/fxge/text_char_pos.h"
#include "core/fxge/text_glyph_pos.h"
#include "third_party/base/compiler_specific.h"
#include "third_party/base/logging.h"
#include "third_party/base/numerics/safe_math.h"
#include "third_party/base/ptr_util.h"
#include "third_party/base/stl_util.h"
#ifdef _SKIA_SUPPORT_
#include "core/fxge/skia/fx_skia_device.h"
#endif
namespace {
constexpr int kRenderMaxRecursionDepth = 64;
int g_CurrentRecursionDepth = 0;
RetainPtr<CFX_DIBitmap> DrawPatternBitmap(
CPDF_Document* pDoc,
CPDF_PageRenderCache* pCache,
CPDF_TilingPattern* pPattern,
CPDF_Form* pPatternForm,
const CFX_Matrix& mtObject2Device,
int width,
int height,
const CPDF_RenderOptions::Options& draw_options) {
auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
if (!pBitmap->Create(width, height,
pPattern->colored() ? FXDIB_Argb : FXDIB_8bppMask)) {
return nullptr;
}
CFX_DefaultRenderDevice bitmap_device;
bitmap_device.Attach(pBitmap, false, nullptr, false);
pBitmap->Clear(0);
CFX_FloatRect cell_bbox =
pPattern->pattern_to_form().TransformRect(pPattern->bbox());
cell_bbox = mtObject2Device.TransformRect(cell_bbox);
CFX_FloatRect bitmap_rect(0.0f, 0.0f, width, height);
CFX_Matrix mtAdjust;
mtAdjust.MatchRect(bitmap_rect, cell_bbox);
CFX_Matrix mtPattern2Bitmap = mtObject2Device * mtAdjust;
CPDF_RenderOptions options;
if (!pPattern->colored())
options.SetColorMode(CPDF_RenderOptions::kAlpha);
options.GetOptions() = draw_options;
options.GetOptions().bForceHalftone = true;
CPDF_RenderContext context(pDoc, nullptr, pCache);
context.AppendLayer(pPatternForm, &mtPattern2Bitmap);
context.Render(&bitmap_device, &options, nullptr);
#if defined _SKIA_SUPPORT_PATHS_
bitmap_device.Flush(true);
pBitmap->UnPreMultiply();
#endif
return pBitmap;
}
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;
}
bool MissingFillColor(const CPDF_ColorState* pColorState) {
return !pColorState->HasRef() || pColorState->GetFillColor()->IsNull();
}
bool MissingStrokeColor(const CPDF_ColorState* pColorState) {
return !pColorState->HasRef() || pColorState->GetStrokeColor()->IsNull();
}
bool Type3CharMissingFillColor(const CPDF_Type3Char* pChar,
const CPDF_ColorState* pColorState) {
return pChar && (!pChar->colored() || MissingFillColor(pColorState));
}
bool Type3CharMissingStrokeColor(const CPDF_Type3Char* pChar,
const CPDF_ColorState* pColorState) {
return pChar && (!pChar->colored() || MissingStrokeColor(pColorState));
}
#if defined(_SKIA_SUPPORT_) || defined(_SKIA_SUPPORT_PATHS_)
class ScopedSkiaDeviceFlush {
public:
explicit ScopedSkiaDeviceFlush(CFX_RenderDevice* pDevice)
: m_pDevice(pDevice) {}
ScopedSkiaDeviceFlush(const ScopedSkiaDeviceFlush&) = delete;
ScopedSkiaDeviceFlush& operator=(const ScopedSkiaDeviceFlush&) = delete;
~ScopedSkiaDeviceFlush() { m_pDevice->Flush(/*release=*/false); }
private:
CFX_RenderDevice* const m_pDevice;
};
#endif
} // namespace
CPDF_RenderStatus::CPDF_RenderStatus(CPDF_RenderContext* pContext,
CFX_RenderDevice* pDevice)
: m_pContext(pContext), m_pDevice(pDevice) {}
CPDF_RenderStatus::~CPDF_RenderStatus() {}
void CPDF_RenderStatus::Initialize(const CPDF_RenderStatus* pParentStatus,
const CPDF_GraphicStates* pInitialStates) {
m_bPrint = m_pDevice->GetDeviceType() != DeviceType::kDisplay;
m_pPageResource.Reset(m_pContext->GetPageResources());
if (pInitialStates && !m_pType3Char) {
m_InitialStates.CopyStates(*pInitialStates);
if (pParentStatus) {
if (!m_InitialStates.m_ColorState.HasFillColor()) {
m_InitialStates.m_ColorState.SetFillColorRef(
pParentStatus->m_InitialStates.m_ColorState.GetFillColorRef());
*m_InitialStates.m_ColorState.GetMutableFillColor() =
*pParentStatus->m_InitialStates.m_ColorState.GetFillColor();
}
if (!m_InitialStates.m_ColorState.HasStrokeColor()) {
m_InitialStates.m_ColorState.SetStrokeColorRef(
pParentStatus->m_InitialStates.m_ColorState.GetFillColorRef());
*m_InitialStates.m_ColorState.GetMutableStrokeColor() =
*pParentStatus->m_InitialStates.m_ColorState.GetStrokeColor();
}
}
} else {
m_InitialStates.DefaultStates();
}
}
void CPDF_RenderStatus::RenderObjectList(
const CPDF_PageObjectHolder* pObjectHolder,
const CFX_Matrix& mtObj2Device) {
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
CFX_FloatRect clip_rect = mtObj2Device.GetInverse().TransformRect(
CFX_FloatRect(m_pDevice->GetClipBox()));
for (const auto& pCurObj : *pObjectHolder) {
if (pCurObj.get() == m_pStopObj) {
m_bStopped = true;
return;
}
if (!pCurObj)
continue;
if (pCurObj->GetRect().left > clip_rect.right ||
pCurObj->GetRect().right < clip_rect.left ||
pCurObj->GetRect().bottom > clip_rect.top ||
pCurObj->GetRect().top < clip_rect.bottom) {
continue;
}
RenderSingleObject(pCurObj.get(), mtObj2Device);
if (m_bStopped)
return;
}
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
}
void CPDF_RenderStatus::RenderSingleObject(CPDF_PageObject* pObj,
const CFX_Matrix& mtObj2Device) {
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
AutoRestorer<int> restorer(&g_CurrentRecursionDepth);
if (++g_CurrentRecursionDepth > kRenderMaxRecursionDepth) {
return;
}
m_pCurObj = pObj;
if (m_Options.GetOCContext() &&
!m_Options.GetOCContext()->CheckObjectVisible(pObj)) {
return;
}
ProcessClipPath(pObj->m_ClipPath, mtObj2Device);
if (ProcessTransparency(pObj, mtObj2Device)) {
return;
}
ProcessObjectNoClip(pObj, mtObj2Device);
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
}
bool CPDF_RenderStatus::ContinueSingleObject(CPDF_PageObject* pObj,
const CFX_Matrix& mtObj2Device,
PauseIndicatorIface* pPause) {
if (m_pImageRenderer) {
if (m_pImageRenderer->Continue(pPause))
return true;
if (!m_pImageRenderer->GetResult())
DrawObjWithBackground(pObj, mtObj2Device);
m_pImageRenderer.reset();
return false;
}
m_pCurObj = pObj;
if (m_Options.GetOCContext() &&
!m_Options.GetOCContext()->CheckObjectVisible(pObj)) {
return false;
}
ProcessClipPath(pObj->m_ClipPath, mtObj2Device);
if (ProcessTransparency(pObj, mtObj2Device))
return false;
if (!pObj->IsImage()) {
ProcessObjectNoClip(pObj, mtObj2Device);
return false;
}
m_pImageRenderer = pdfium::MakeUnique<CPDF_ImageRenderer>();
if (!m_pImageRenderer->Start(this, pObj->AsImage(), mtObj2Device, false,
BlendMode::kNormal)) {
if (!m_pImageRenderer->GetResult())
DrawObjWithBackground(pObj, mtObj2Device);
m_pImageRenderer.reset();
return false;
}
return ContinueSingleObject(pObj, mtObj2Device, pPause);
}
FX_RECT CPDF_RenderStatus::GetObjectClippedRect(
const CPDF_PageObject* pObj,
const CFX_Matrix& mtObj2Device) const {
FX_RECT rect = pObj->GetTransformedBBox(mtObj2Device);
rect.Intersect(m_pDevice->GetClipBox());
return rect;
}
void CPDF_RenderStatus::ProcessObjectNoClip(CPDF_PageObject* pObj,
const CFX_Matrix& mtObj2Device) {
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
bool bRet = false;
switch (pObj->GetType()) {
case CPDF_PageObject::TEXT:
bRet = ProcessText(pObj->AsText(), mtObj2Device, nullptr);
break;
case CPDF_PageObject::PATH:
bRet = ProcessPath(pObj->AsPath(), mtObj2Device);
break;
case CPDF_PageObject::IMAGE:
bRet = ProcessImage(pObj->AsImage(), mtObj2Device);
break;
case CPDF_PageObject::SHADING:
ProcessShading(pObj->AsShading(), mtObj2Device);
return;
case CPDF_PageObject::FORM:
bRet = ProcessForm(pObj->AsForm(), mtObj2Device);
break;
}
if (!bRet)
DrawObjWithBackground(pObj, mtObj2Device);
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
}
bool CPDF_RenderStatus::DrawObjWithBlend(CPDF_PageObject* pObj,
const CFX_Matrix& mtObj2Device) {
switch (pObj->GetType()) {
case CPDF_PageObject::PATH:
return ProcessPath(pObj->AsPath(), mtObj2Device);
case CPDF_PageObject::IMAGE:
return ProcessImage(pObj->AsImage(), mtObj2Device);
case CPDF_PageObject::FORM:
return ProcessForm(pObj->AsForm(), mtObj2Device);
default:
return false;
}
}
void CPDF_RenderStatus::DrawObjWithBackground(CPDF_PageObject* pObj,
const CFX_Matrix& mtObj2Device) {
FX_RECT rect = GetObjectClippedRect(pObj, mtObj2Device);
if (rect.IsEmpty())
return;
int res = 300;
if (pObj->IsImage() && m_pDevice->GetDeviceType() == DeviceType::kPrinter)
res = 0;
CPDF_ScaledRenderBuffer buffer;
if (!buffer.Initialize(m_pContext.Get(), m_pDevice, rect, pObj, &m_Options,
res)) {
return;
}
CFX_Matrix matrix = mtObj2Device * buffer.GetMatrix();
const CPDF_Dictionary* pFormResource = nullptr;
const CPDF_FormObject* pFormObj = pObj->AsForm();
if (pFormObj)
pFormResource = pFormObj->form()->GetDict()->GetDictFor("Resources");
CPDF_RenderStatus status(m_pContext.Get(), buffer.GetDevice());
status.SetOptions(m_Options);
status.SetDeviceMatrix(buffer.GetMatrix());
status.SetTransparency(m_Transparency);
status.SetDropObjects(m_bDropObjects);
status.SetFormResource(pFormResource);
status.Initialize(nullptr, nullptr);
status.RenderSingleObject(pObj, matrix);
buffer.OutputToDevice();
}
bool CPDF_RenderStatus::ProcessForm(const CPDF_FormObject* pFormObj,
const CFX_Matrix& mtObj2Device) {
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
const CPDF_Dictionary* pOC = pFormObj->form()->GetDict()->GetDictFor("OC");
if (pOC && m_Options.GetOCContext() &&
!m_Options.GetOCContext()->CheckOCGVisible(pOC)) {
return true;
}
CFX_Matrix matrix = pFormObj->form_matrix() * mtObj2Device;
const CPDF_Dictionary* pResources =
pFormObj->form()->GetDict()->GetDictFor("Resources");
CPDF_RenderStatus status(m_pContext.Get(), m_pDevice);
status.SetOptions(m_Options);
status.SetStopObject(m_pStopObj.Get());
status.SetTransparency(m_Transparency);
status.SetDropObjects(m_bDropObjects);
status.SetFormResource(pResources);
status.Initialize(this, pFormObj);
status.m_curBlend = m_curBlend;
{
CFX_RenderDevice::StateRestorer restorer(m_pDevice);
status.RenderObjectList(pFormObj->form(), matrix);
m_bStopped = status.m_bStopped;
}
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
return true;
}
bool CPDF_RenderStatus::ProcessPath(CPDF_PathObject* pPathObj,
const CFX_Matrix& mtObj2Device) {
int FillType = pPathObj->filltype();
bool bStroke = pPathObj->stroke();
ProcessPathPattern(pPathObj, mtObj2Device, &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->matrix() * mtObj2Device;
if (!IsAvailableMatrix(path_matrix))
return true;
if (FillType && m_Options.GetOptions().bRectAA)
FillType |= FXFILL_RECT_AA;
if (m_Options.GetOptions().bFillFullcover)
FillType |= FXFILL_FULLCOVER;
if (m_Options.GetOptions().bNoPathSmooth)
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.GetOptions().bThinLine)
graphState.SetLineWidth(0);
return m_pDevice->DrawPathWithBlend(
pPathObj->path().GetObject(), &path_matrix, graphState.GetObject(),
fill_argb, stroke_argb, FillType, m_curBlend);
}
RetainPtr<CPDF_TransferFunc> CPDF_RenderStatus::GetTransferFunc(
const CPDF_Object* pObj) const {
ASSERT(pObj);
auto* pDocCache = CPDF_DocRenderData::FromDocument(m_pContext->GetDocument());
return pDocCache ? pDocCache->GetTransferFunc(pObj) : nullptr;
}
FX_ARGB CPDF_RenderStatus::GetFillArgbInternal(CPDF_PageObject* pObj,
bool bType3) const {
const CPDF_ColorState* pColorState = &pObj->m_ColorState;
if (!bType3 && Type3CharMissingFillColor(m_pType3Char.Get(), pColorState))
return m_T3FillColor;
if (MissingFillColor(pColorState))
pColorState = &m_InitialStates.m_ColorState;
FX_COLORREF colorref = pColorState->GetFillColorRef();
if (colorref == 0xFFFFFFFF)
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()) {
colorref =
pObj->m_GeneralState.GetTransferFunc()->TranslateColor(colorref);
}
}
return m_Options.TranslateColor(AlphaAndColorRefToArgb(alpha, colorref));
}
FX_ARGB CPDF_RenderStatus::GetStrokeArgb(CPDF_PageObject* pObj) const {
const CPDF_ColorState* pColorState = &pObj->m_ColorState;
if (Type3CharMissingStrokeColor(m_pType3Char.Get(), pColorState))
return m_T3FillColor;
if (MissingStrokeColor(pColorState))
pColorState = &m_InitialStates.m_ColorState;
FX_COLORREF colorref = pColorState->GetStrokeColorRef();
if (colorref == 0xFFFFFFFF)
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()) {
colorref =
pObj->m_GeneralState.GetTransferFunc()->TranslateColor(colorref);
}
}
return m_Options.TranslateColor(AlphaAndColorRefToArgb(alpha, colorref));
}
void CPDF_RenderStatus::ProcessClipPath(const CPDF_ClipPath& ClipPath,
const CFX_Matrix& mtObj2Device) {
if (!ClipPath.HasRef()) {
if (m_LastClipPath.HasRef()) {
m_pDevice->RestoreState(true);
m_LastClipPath.SetNull();
}
return;
}
if (m_LastClipPath == ClipPath)
return;
m_LastClipPath = ClipPath;
m_pDevice->RestoreState(true);
for (size_t i = 0; i < ClipPath.GetPathCount(); ++i) {
const CFX_PathData* pPathData = ClipPath.GetPath(i).GetObject();
if (!pPathData)
continue;
if (pPathData->GetPoints().empty()) {
CFX_PathData EmptyPath;
EmptyPath.AppendRect(-1, -1, 0, 0);
m_pDevice->SetClip_PathFill(&EmptyPath, nullptr, FXFILL_WINDING);
} else {
m_pDevice->SetClip_PathFill(pPathData, &mtObj2Device,
ClipPath.GetClipType(i));
}
}
if (ClipPath.GetTextCount() == 0)
return;
if (m_pDevice->GetDeviceType() == DeviceType::kDisplay &&
!(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP)) {
return;
}
std::unique_ptr<CFX_PathData> pTextClippingPath;
for (size_t i = 0; i < ClipPath.GetTextCount(); ++i) {
CPDF_TextObject* pText = ClipPath.GetText(i);
if (pText) {
if (!pTextClippingPath)
pTextClippingPath = pdfium::MakeUnique<CFX_PathData>();
ProcessText(pText, mtObj2Device, pTextClippingPath.get());
continue;
}
if (!pTextClippingPath)
continue;
int fill_mode = FXFILL_WINDING;
if (m_Options.GetOptions().bNoTextSmooth)
fill_mode |= FXFILL_NOPATHSMOOTH;
m_pDevice->SetClip_PathFill(pTextClippingPath.get(), nullptr, fill_mode);
pTextClippingPath.reset();
}
}
bool CPDF_RenderStatus::ClipPattern(const CPDF_PageObject* pPageObj,
const CFX_Matrix& mtObj2Device,
bool bStroke) {
if (pPageObj->IsPath())
return SelectClipPath(pPageObj->AsPath(), mtObj2Device, bStroke);
if (pPageObj->IsImage()) {
m_pDevice->SetClip_Rect(pPageObj->GetTransformedBBox(mtObj2Device));
return true;
}
return false;
}
bool CPDF_RenderStatus::SelectClipPath(const CPDF_PathObject* pPathObj,
const CFX_Matrix& mtObj2Device,
bool bStroke) {
CFX_Matrix path_matrix = pPathObj->matrix() * mtObj2Device;
if (bStroke) {
CFX_GraphState graphState = pPathObj->m_GraphState;
if (m_Options.GetOptions().bThinLine)
graphState.SetLineWidth(0);
return m_pDevice->SetClip_PathStroke(pPathObj->path().GetObject(),
&path_matrix, graphState.GetObject());
}
int fill_mode = pPathObj->filltype();
if (m_Options.GetOptions().bNoPathSmooth) {
fill_mode |= FXFILL_NOPATHSMOOTH;
}
return m_pDevice->SetClip_PathFill(pPathObj->path().GetObject(), &path_matrix,
fill_mode);
}
bool CPDF_RenderStatus::ProcessTransparency(CPDF_PageObject* pPageObj,
const CFX_Matrix& mtObj2Device) {
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
BlendMode blend_type = pPageObj->m_GeneralState.GetBlendType();
CPDF_Dictionary* pSMaskDict =
ToDictionary(pPageObj->m_GeneralState.GetSoftMask());
if (pSMaskDict) {
if (pPageObj->IsImage() &&
pPageObj->AsImage()->GetImage()->GetDict()->KeyExist("SMask")) {
pSMaskDict = nullptr;
}
}
const CPDF_Dictionary* pFormResource = nullptr;
float group_alpha = 1.0f;
CPDF_Transparency transparency = m_Transparency;
bool bGroupTransparent = false;
const CPDF_FormObject* pFormObj = pPageObj->AsForm();
if (pFormObj) {
group_alpha = pFormObj->m_GeneralState.GetFillAlpha();
transparency = pFormObj->form()->GetTransparency();
bGroupTransparent = transparency.IsIsolated();
pFormResource = pFormObj->form()->GetDict()->GetDictFor("Resources");
}
bool bTextClip =
(pPageObj->m_ClipPath.HasRef() &&
pPageObj->m_ClipPath.GetTextCount() > 0 &&
m_pDevice->GetDeviceType() == DeviceType::kDisplay &&
!(m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_SOFT_CLIP));
if (m_Options.GetOptions().bOverprint && 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->GetDocument();
} else {
pDocument = pPageObj->AsImage()->GetImage()->GetDocument();
}
const CPDF_Dictionary* pPageResources =
pPage ? pPage->m_pPageResources.Get() : nullptr;
auto* pImageStream = pPageObj->AsImage()->GetImage()->GetStream();
const CPDF_Object* pCSObj =
pImageStream->GetDict()->GetDirectObjectFor("ColorSpace");
RetainPtr<CPDF_ColorSpace> pColorSpace =
CPDF_DocPageData::FromDocument(pDocument)->GetColorSpace(
pCSObj, pPageResources);
if (pColorSpace) {
int format = pColorSpace->GetFamily();
if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION ||
format == PDFCS_DEVICEN) {
blend_type = BlendMode::kDarken;
}
}
}
if (!pSMaskDict && group_alpha == 1.0f && blend_type == BlendMode::kNormal &&
!bTextClip && !bGroupTransparent) {
return false;
}
if (m_bPrint) {
bool bRet = false;
int rendCaps = m_pDevice->GetRenderCaps();
if (!(transparency.IsIsolated() || pSMaskDict || bTextClip) &&
(rendCaps & FXRC_BLEND_MODE)) {
BlendMode oldBlend = m_curBlend;
m_curBlend = blend_type;
bRet = DrawObjWithBlend(pPageObj, mtObj2Device);
m_curBlend = oldBlend;
}
if (!bRet) {
DrawObjWithBackground(pPageObj, mtObj2Device);
}
return true;
}
FX_RECT rect = pPageObj->GetTransformedBBox(mtObj2Device);
rect.Intersect(m_pDevice->GetClipBox());
if (rect.IsEmpty())
return true;
int width = rect.Width();
int height = rect.Height();
CFX_DefaultRenderDevice bitmap_device;
RetainPtr<CFX_DIBitmap> backdrop;
if (!transparency.IsIsolated() &&
(m_pDevice->GetRenderCaps() & FXRC_GET_BITS)) {
backdrop = pdfium::MakeRetain<CFX_DIBitmap>();
if (!m_pDevice->CreateCompatibleBitmap(backdrop, width, height))
return true;
m_pDevice->GetDIBits(backdrop, rect.left, rect.top);
}
if (!bitmap_device.Create(width, height, FXDIB_Argb, backdrop))
return true;
RetainPtr<CFX_DIBitmap> bitmap = bitmap_device.GetBitmap();
bitmap->Clear(0);
CFX_Matrix new_matrix = mtObj2Device;
new_matrix.Translate(-rect.left, -rect.top);
RetainPtr<CFX_DIBitmap> pTextMask;
if (bTextClip) {
pTextMask = pdfium::MakeRetain<CFX_DIBitmap>();
if (!pTextMask->Create(width, height, FXDIB_8bppMask))
return true;
pTextMask->Clear(0);
CFX_DefaultRenderDevice text_device;
text_device.Attach(pTextMask, false, nullptr, false);
for (size_t i = 0; i < pPageObj->m_ClipPath.GetTextCount(); ++i) {
CPDF_TextObject* textobj = pPageObj->m_ClipPath.GetText(i);
if (!textobj)
break;
// TODO(thestig): Should we check the return value here?
CPDF_TextRenderer::DrawTextPath(
&text_device, textobj->GetCharCodes(), textobj->GetCharPositions(),
textobj->m_TextState.GetFont().Get(),
textobj->m_TextState.GetFontSize(), textobj->GetTextMatrix(),
&new_matrix, textobj->m_GraphState.GetObject(), 0xffffffff, 0,
nullptr, 0);
}
}
CPDF_RenderStatus bitmap_render(m_pContext.Get(), &bitmap_device);
bitmap_render.SetOptions(m_Options);
bitmap_render.SetStopObject(m_pStopObj.Get());
bitmap_render.SetStdCS(true);
bitmap_render.SetDropObjects(m_bDropObjects);
bitmap_render.SetFormResource(pFormResource);
bitmap_render.Initialize(nullptr, nullptr);
bitmap_render.ProcessObjectNoClip(pPageObj, new_matrix);
#if defined _SKIA_SUPPORT_PATHS_
bitmap_device.Flush(true);
bitmap->UnPreMultiply();
#endif
m_bStopped = bitmap_render.m_bStopped;
if (pSMaskDict) {
CFX_Matrix smask_matrix =
*pPageObj->m_GeneralState.GetSMaskMatrix() * mtObj2Device;
RetainPtr<CFX_DIBBase> pSMaskSource =
LoadSMask(pSMaskDict, &rect, &smask_matrix);
if (pSMaskSource)
bitmap->MultiplyAlpha(pSMaskSource);
}
if (pTextMask) {
bitmap->MultiplyAlpha(pTextMask);
pTextMask.Reset();
}
int32_t blitAlpha = 255;
if (group_alpha != 1.0f && transparency.IsGroup()) {
blitAlpha = (int32_t)(group_alpha * 255);
#ifndef _SKIA_SUPPORT_
bitmap->MultiplyAlpha(blitAlpha);
blitAlpha = 255;
#endif
}
transparency = m_Transparency;
if (pPageObj->IsForm()) {
transparency.SetGroup();
}
CompositeDIBitmap(bitmap, rect.left, rect.top, 0, blitAlpha, blend_type,
transparency);
#if defined _SKIA_SUPPORT_
DebugVerifyDeviceIsPreMultiplied();
#endif
return true;
}
RetainPtr<CFX_DIBitmap> CPDF_RenderStatus::GetBackdrop(
const CPDF_PageObject* pObj,
const FX_RECT& rect,
bool bBackAlphaRequired,
int* left,
int* top) {
FX_RECT bbox = rect;
bbox.Intersect(m_pDevice->GetClipBox());
*left = bbox.left;
*top = bbox.top;
int width = bbox.Width();
int height = bbox.Height();
auto pBackdrop = pdfium::MakeRetain<CFX_DIBitmap>();
if (bBackAlphaRequired && !m_bDropObjects)
pBackdrop->Create(width, height, FXDIB_Argb);
else
m_pDevice->CreateCompatibleBitmap(pBackdrop, width, height);
if (!pBackdrop->GetBuffer())
return nullptr;
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, *left, *top);
return pBackdrop;
}
CFX_Matrix FinalMatrix = m_DeviceMatrix;
FinalMatrix.Translate(-*left, -*top);
pBackdrop->Clear(pBackdrop->HasAlpha() ? 0 : 0xffffffff);
CFX_DefaultRenderDevice device;
device.Attach(pBackdrop, false, nullptr, false);
m_pContext->Render(&device, pObj, &m_Options, &FinalMatrix);
return pBackdrop;
}
std::unique_ptr<CPDF_GraphicStates> CPDF_RenderStatus::CloneObjStates(
const CPDF_GraphicStates* pSrcStates,
bool bStroke) {
if (!pSrcStates)
return nullptr;
auto pStates = pdfium::MakeUnique<CPDF_GraphicStates>();
pStates->CopyStates(*pSrcStates);
const CPDF_Color* pObjColor = bStroke
? pSrcStates->m_ColorState.GetStrokeColor()
: pSrcStates->m_ColorState.GetFillColor();
if (!pObjColor->IsNull()) {
pStates->m_ColorState.SetFillColorRef(
bStroke ? pSrcStates->m_ColorState.GetStrokeColorRef()
: pSrcStates->m_ColorState.GetFillColorRef());
pStates->m_ColorState.SetStrokeColorRef(
pStates->m_ColorState.GetFillColorRef());
}
return pStates;
}
#if defined _SKIA_SUPPORT_
void CPDF_RenderStatus::DebugVerifyDeviceIsPreMultiplied() const {
m_pDevice->DebugVerifyBitmapIsPreMultiplied();
}
#endif
bool CPDF_RenderStatus::ProcessText(CPDF_TextObject* textobj,
const CFX_Matrix& mtObj2Device,
CFX_PathData* pClippingPath) {
if (textobj->GetCharCodes().empty())
return true;
const TextRenderingMode text_render_mode = textobj->m_TextState.GetTextMode();
if (text_render_mode == TextRenderingMode::MODE_INVISIBLE)
return true;
RetainPtr<CPDF_Font> pFont = textobj->m_TextState.GetFont();
if (pFont->IsType3Font())
return ProcessType3Text(textobj, mtObj2Device);
bool bFill = false;
bool bStroke = false;
bool bClip = false;
if (pClippingPath) {
bClip = true;
} else {
switch (text_render_mode) {
case TextRenderingMode::MODE_FILL:
case TextRenderingMode::MODE_FILL_CLIP:
bFill = true;
break;
case TextRenderingMode::MODE_STROKE:
case TextRenderingMode::MODE_STROKE_CLIP:
if (pFont->HasFace())
bStroke = true;
else
bFill = true;
break;
case TextRenderingMode::MODE_FILL_STROKE:
case TextRenderingMode::MODE_FILL_STROKE_CLIP:
bFill = true;
if (pFont->HasFace())
bStroke = true;
break;
case TextRenderingMode::MODE_INVISIBLE:
// Already handled above, but the compiler is not smart enough to
// realize it.
NOTREACHED();
return true;
case TextRenderingMode::MODE_CLIP:
return true;
case TextRenderingMode::MODE_UNKNOWN:
NOTREACHED();
return false;
}
}
FX_ARGB stroke_argb = 0;
FX_ARGB fill_argb = 0;
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();
if (!IsAvailableMatrix(text_matrix))
return true;
float font_size = textobj->m_TextState.GetFontSize();
if (bPattern) {
DrawTextPathWithPattern(textobj, mtObj2Device, pFont.Get(), font_size,
&text_matrix, bFill, bStroke);
return true;
}
if (bClip || bStroke) {
const CFX_Matrix* pDeviceMatrix = &mtObj2Device;
CFX_Matrix device_matrix;
if (bStroke) {
const float* pCTM = textobj->m_TextState.GetCTM();
if (pCTM[0] != 1.0f || pCTM[3] != 1.0f) {
CFX_Matrix ctm(pCTM[0], pCTM[1], pCTM[2], pCTM[3], 0, 0);
text_matrix *= ctm.GetInverse();
device_matrix = ctm * mtObj2Device;
pDeviceMatrix = &device_matrix;
}
}
int flag = 0;
if (bStroke && bFill) {
flag |= FX_FILL_STROKE;
flag |= FX_STROKE_TEXT_MODE;
}
if (textobj->m_GeneralState.GetStrokeAdjust())
flag |= FX_STROKE_ADJUST;
if (m_Options.GetOptions().bNoTextSmooth)
flag |= FXFILL_NOPATHSMOOTH;
return CPDF_TextRenderer::DrawTextPath(
m_pDevice, textobj->GetCharCodes(), textobj->GetCharPositions(),
pFont.Get(), font_size, text_matrix, pDeviceMatrix,
textobj->m_GraphState.GetObject(), fill_argb, stroke_argb,
pClippingPath, flag);
}
text_matrix.Concat(mtObj2Device);
return CPDF_TextRenderer::DrawNormalText(
m_pDevice, textobj->GetCharCodes(), textobj->GetCharPositions(),
pFont.Get(), font_size, text_matrix, fill_argb, m_Options);
}
// TODO(npm): Font fallback for type 3 fonts? (Completely separate code!!)
bool CPDF_RenderStatus::ProcessType3Text(CPDF_TextObject* textobj,
const CFX_Matrix& mtObj2Device) {
CPDF_Type3Font* pType3Font = textobj->m_TextState.GetFont()->AsType3Font();
if (pdfium::ContainsValue(m_Type3FontCache, pType3Font))
return true;
DeviceType device_type = m_pDevice->GetDeviceType();
FX_ARGB fill_argb = GetFillArgbForType3(textobj);
int fill_alpha = FXARGB_A(fill_argb);
if (device_type != DeviceType::kDisplay && fill_alpha < 255)
return false;
CFX_Matrix text_matrix = textobj->GetTextMatrix();
CFX_Matrix char_matrix = pType3Font->GetFontMatrix();
float font_size = textobj->m_TextState.GetFontSize();
char_matrix.Scale(font_size, font_size);
// Must come before |glyphs|, because |glyphs| points into |refTypeCache|.
std::set<RetainPtr<CPDF_Type3Cache>> refTypeCache;
std::vector<TextGlyphPos> glyphs;
if (device_type == DeviceType::kDisplay)
glyphs.resize(textobj->GetCharCodes().size());
for (size_t iChar = 0; iChar < textobj->GetCharCodes().size(); ++iChar) {
uint32_t charcode = textobj->GetCharCodes()[iChar];
if (charcode == static_cast<uint32_t>(-1))
continue;
CPDF_Type3Char* pType3Char = pType3Font->LoadChar(charcode);
if (!pType3Char)
continue;
CFX_Matrix matrix = char_matrix;
matrix.e += iChar > 0 ? textobj->GetCharPositions()[iChar - 1] : 0;
matrix.Concat(text_matrix);
matrix.Concat(mtObj2Device);
if (!pType3Char->LoadBitmapFromSoleImageOfForm()) {
if (!glyphs.empty()) {
for (size_t i = 0; i < iChar; ++i) {
const TextGlyphPos& glyph = glyphs[i];
if (!glyph.m_pGlyph)
continue;
Optional<CFX_Point> point = glyph.GetOrigin({0, 0});
if (!point.has_value())
continue;
m_pDevice->SetBitMask(glyph.m_pGlyph->GetBitmap(), point->x, point->y,
fill_argb);
}
glyphs.clear();
}
std::unique_ptr<CPDF_GraphicStates> pStates =
CloneObjStates(textobj, false);
CPDF_RenderOptions options = m_Options;
options.GetOptions().bForceHalftone = true;
options.GetOptions().bRectAA = true;
const auto* pForm = static_cast<const CPDF_Form*>(pType3Char->form());
const CPDF_Dictionary* pFormResource =
pForm->GetDict()->GetDictFor("Resources");
if (fill_alpha == 255) {
CPDF_RenderStatus status(m_pContext.Get(), m_pDevice);
status.SetOptions(options);
status.SetTransparency(pForm->GetTransparency());
status.SetType3Char(pType3Char);
status.SetFillColor(fill_argb);
status.SetDropObjects(m_bDropObjects);
status.SetFormResource(pFormResource);
status.Initialize(this, pStates.get());
status.m_Type3FontCache = m_Type3FontCache;
status.m_Type3FontCache.push_back(pType3Font);
CFX_RenderDevice::StateRestorer restorer(m_pDevice);
status.RenderObjectList(pForm, matrix);
} else {
FX_RECT rect =
matrix.TransformRect(pForm->CalcBoundingBox()).GetOuterRect();
if (!rect.Valid())
continue;
CFX_DefaultRenderDevice bitmap_device;
if (!bitmap_device.Create(rect.Width(), rect.Height(), FXDIB_Argb,
nullptr)) {
return true;
}
bitmap_device.GetBitmap()->Clear(0);
CPDF_RenderStatus status(m_pContext.Get(), &bitmap_device);
status.SetOptions(options);
status.SetTransparency(pForm->GetTransparency());
status.SetType3Char(pType3Char);
status.SetFillColor(fill_argb);
status.SetDropObjects(m_bDropObjects);
status.SetFormResource(pFormResource);
status.Initialize(this, pStates.get());
status.m_Type3FontCache = m_Type3FontCache;
status.m_Type3FontCache.push_back(pType3Font);
matrix.Translate(-rect.left, -rect.top);
status.RenderObjectList(pForm, matrix);
m_pDevice->SetDIBits(bitmap_device.GetBitmap(), rect.left, rect.top);
}
} else if (pType3Char->GetBitmap()) {
if (device_type == DeviceType::kDisplay) {
CPDF_Document* pDoc = pType3Font->GetDocument();
RetainPtr<CPDF_Type3Cache> pCache =
CPDF_DocRenderData::FromDocument(pDoc)->GetCachedType3(pType3Font);
const CFX_GlyphBitmap* pBitmap = pCache->LoadGlyph(charcode, &matrix);
if (!pBitmap)
continue;
refTypeCache.insert(std::move(pCache));
CFX_Point origin(FXSYS_roundf(matrix.e), FXSYS_roundf(matrix.f));
if (glyphs.empty()) {
FX_SAFE_INT32 left = origin.x;
left += pBitmap->left();
if (!left.IsValid())
continue;
FX_SAFE_INT32 top = origin.y;
top -= pBitmap->top();
if (!top.IsValid())
continue;
m_pDevice->SetBitMask(pBitmap->GetBitmap(), left.ValueOrDie(),
top.ValueOrDie(), fill_argb);
} else {
glyphs[iChar].m_pGlyph = pBitmap;
glyphs[iChar].m_Origin = origin;
}
} else {
CFX_Matrix image_matrix = pType3Char->matrix() * matrix;
CPDF_ImageRenderer renderer;
if (renderer.Start(this, pType3Char->GetBitmap(), fill_argb, 255,
image_matrix, FXDIB_ResampleOptions(), false,
BlendMode::kNormal)) {
renderer.Continue(nullptr);
}
if (!renderer.GetResult())
return false;
}
}
}
if (glyphs.empty())
return true;
FX_RECT rect = GetGlyphsBBox(glyphs, 0);
auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
if (!pBitmap->Create(rect.Width(), rect.Height(), FXDIB_8bppMask))
return true;
pBitmap->Clear(0);
for (const TextGlyphPos& glyph : glyphs) {
if (!glyph.m_pGlyph)
continue;
Optional<CFX_Point> point = glyph.GetOrigin({rect.left, rect.top});
if (!point.has_value())
continue;
pBitmap->CompositeMask(
point->x, point->y, glyph.m_pGlyph->GetBitmap()->GetWidth(),
glyph.m_pGlyph->GetBitmap()->GetHeight(), glyph.m_pGlyph->GetBitmap(),
fill_argb, 0, 0, BlendMode::kNormal, nullptr, false);
}
m_pDevice->SetBitMask(pBitmap, rect.left, rect.top, fill_argb);
return true;
}
void CPDF_RenderStatus::DrawTextPathWithPattern(const CPDF_TextObject* textobj,
const CFX_Matrix& mtObj2Device,
CPDF_Font* pFont,
float font_size,
const CFX_Matrix* pTextMatrix,
bool bFill,
bool bStroke) {
if (!bStroke) {
std::vector<std::unique_ptr<CPDF_TextObject>> pCopy;
pCopy.push_back(std::unique_ptr<CPDF_TextObject>(textobj->Clone()));
CPDF_PathObject path;
path.set_filltype(FXFILL_WINDING);
path.m_ClipPath.CopyClipPath(m_LastClipPath);
path.m_ClipPath.AppendTexts(&pCopy);
path.m_ColorState = textobj->m_ColorState;
path.m_GeneralState = textobj->m_GeneralState;
path.path().AppendFloatRect(textobj->GetRect());
path.SetRect(textobj->GetRect());
AutoRestorer<UnownedPtr<const CPDF_PageObject>> restorer2(&m_pCurObj);
RenderSingleObject(&path, mtObj2Device);
return;
}
const CPDF_CharPosList CharPosList(
textobj->GetCharCodes(), textobj->GetCharPositions(), pFont, font_size);
for (const TextCharPos& charpos : CharPosList.Get()) {
auto* font = charpos.m_FallbackFontPosition == -1
? pFont->GetFont()
: pFont->GetFontFallback(charpos.m_FallbackFontPosition);
const CFX_PathData* pPath =
font->LoadGlyphPath(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 = CFX_Matrix(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1],
charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3],
0, 0);
}
matrix.Concat(CFX_Matrix(font_size, 0, 0, font_size, charpos.m_Origin.x,
charpos.m_Origin.y));
path.set_stroke(bStroke);
path.set_filltype(bFill ? FXFILL_WINDING : 0);
path.path().Append(pPath, &matrix);
path.set_matrix(*pTextMatrix);
path.CalcBoundingBox();
ProcessPath(&path, mtObj2Device);
}
}
void CPDF_RenderStatus::DrawShadingPattern(CPDF_ShadingPattern* pattern,
const CPDF_PageObject* pPageObj,
const CFX_Matrix& mtObj2Device,
bool bStroke) {
if (!pattern->Load())
return;
CFX_RenderDevice::StateRestorer restorer(m_pDevice);
if (!ClipPattern(pPageObj, mtObj2Device, bStroke))
return;
FX_RECT rect = GetObjectClippedRect(pPageObj, mtObj2Device);
if (rect.IsEmpty())
return;
CFX_Matrix matrix = pattern->pattern_to_form() * mtObj2Device;
int alpha =
FXSYS_roundf(255 * (bStroke ? pPageObj->m_GeneralState.GetStrokeAlpha()
: pPageObj->m_GeneralState.GetFillAlpha()));
CPDF_RenderShading::Draw(m_pDevice, m_pContext.Get(), m_pCurObj.Get(),
pattern, matrix, rect, alpha, m_Options);
}
void CPDF_RenderStatus::ProcessShading(const CPDF_ShadingObject* pShadingObj,
const CFX_Matrix& mtObj2Device) {
FX_RECT rect = pShadingObj->GetTransformedBBox(mtObj2Device);
FX_RECT clip_box = m_pDevice->GetClipBox();
rect.Intersect(clip_box);
if (rect.IsEmpty())
return;
CFX_Matrix matrix = pShadingObj->matrix() * mtObj2Device;
CPDF_RenderShading::Draw(
m_pDevice, m_pContext.Get(), m_pCurObj.Get(), pShadingObj->pattern(),
matrix, rect,
FXSYS_roundf(255 * pShadingObj->m_GeneralState.GetFillAlpha()),
m_Options);
}
void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern,
CPDF_PageObject* pPageObj,
const CFX_Matrix& mtObj2Device,
bool bStroke) {
const std::unique_ptr<CPDF_Form> pPatternForm = pPattern->Load(pPageObj);
if (!pPatternForm)
return;
CFX_RenderDevice::StateRestorer restorer(m_pDevice);
#if defined(_SKIA_SUPPORT_) || defined(_SKIA_SUPPORT_PATHS_)
ScopedSkiaDeviceFlush scoped_skia_device_flush(m_pDevice);
#endif
if (!ClipPattern(pPageObj, mtObj2Device, bStroke))
return;
FX_RECT clip_box = m_pDevice->GetClipBox();
if (clip_box.IsEmpty())
return;
const CFX_Matrix mtPattern2Device =
pPattern->pattern_to_form() * mtObj2Device;
CFX_FloatRect cell_bbox = mtPattern2Device.TransformRect(pPattern->bbox());
float ceil_height = std::ceil(cell_bbox.Height());
float ceil_width = std::ceil(cell_bbox.Width());
// Validate the float will fit into the int when the conversion is done.
if (!pdfium::base::IsValueInRangeForNumericType<int>(ceil_height) ||
!pdfium::base::IsValueInRangeForNumericType<int>(ceil_width)) {
return;
}
int width = static_cast<int>(ceil_width);
int height = static_cast<int>(ceil_height);
if (width <= 0)
width = 1;
if (height <= 0)
height = 1;
CFX_FloatRect clip_box_p =
mtPattern2Device.GetInverse().TransformRect(CFX_FloatRect(clip_box));
int min_col = static_cast<int>(
ceil((clip_box_p.left - pPattern->bbox().right) / pPattern->x_step()));
int max_col = static_cast<int>(
floor((clip_box_p.right - pPattern->bbox().left) / pPattern->x_step()));
int min_row = static_cast<int>(
ceil((clip_box_p.bottom - pPattern->bbox().top) / pPattern->y_step()));
int max_row = static_cast<int>(
floor((clip_box_p.top - pPattern->bbox().bottom) / pPattern->y_step()));
// Make sure we can fit the needed width * height into an int.
if (height > std::numeric_limits<int>::max() / width)
return;
if (width > clip_box.Width() || height > clip_box.Height() ||
width * height > clip_box.Width() * clip_box.Height()) {
std::unique_ptr<CPDF_GraphicStates> pStates;
if (!pPattern->colored())
pStates = CloneObjStates(pPageObj, bStroke);
const CPDF_Dictionary* pFormDict = pPatternForm->GetDict();
const CPDF_Dictionary* pFormResource =
pFormDict ? pFormDict->GetDictFor("Resources") : nullptr;
for (int col = min_col; col <= max_col; col++) {
for (int row = min_row; row <= max_row; row++) {
CFX_PointF original = mtPattern2Device.Transform(
CFX_PointF(col * pPattern->x_step(), row * pPattern->y_step()));
CFX_Matrix matrix = mtObj2Device;
matrix.Translate(original.x - mtPattern2Device.e,
original.y - mtPattern2Device.f);
CFX_RenderDevice::StateRestorer restorer2(m_pDevice);
CPDF_RenderStatus status(m_pContext.Get(), m_pDevice);
status.SetOptions(m_Options);
status.SetTransparency(pPatternForm->GetTransparency());
status.SetFormResource(pFormResource);
status.SetDropObjects(m_bDropObjects);
status.Initialize(this, pStates.get());
status.RenderObjectList(pPatternForm.get(), matrix);
}
}
return;
}
bool bAligned =
pPattern->bbox().left == 0 && pPattern->bbox().bottom == 0 &&
pPattern->bbox().right == pPattern->x_step() &&
pPattern->bbox().top == pPattern->y_step() &&
(mtPattern2Device.IsScaled() || mtPattern2Device.Is90Rotated());
if (bAligned) {
int orig_x = FXSYS_roundf(mtPattern2Device.e);
int orig_y = FXSYS_roundf(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--;
}
float left_offset = cell_bbox.left - mtPattern2Device.e;
float top_offset = cell_bbox.bottom - mtPattern2Device.f;
RetainPtr<CFX_DIBitmap> pPatternBitmap;
if (width * height < 16) {
RetainPtr<CFX_DIBitmap> pEnlargedBitmap = DrawPatternBitmap(
m_pContext->GetDocument(), m_pContext->GetPageCache(), pPattern,
pPatternForm.get(), mtObj2Device, 8, 8, m_Options.GetOptions());
pPatternBitmap = pEnlargedBitmap->StretchTo(
width, height, FXDIB_ResampleOptions(), nullptr);
} else {
pPatternBitmap =
DrawPatternBitmap(m_pContext->GetDocument(), m_pContext->GetPageCache(),
pPattern, pPatternForm.get(), mtObj2Device, width,
height, m_Options.GetOptions());
}
if (!pPatternBitmap)
return;
if (m_Options.ColorModeIs(CPDF_RenderOptions::kGray))
pPatternBitmap->ConvertColorScale(0, 0xffffff);
FX_ARGB fill_argb = GetFillArgb(pPageObj);
int clip_width = clip_box.right - clip_box.left;
int clip_height = clip_box.bottom - clip_box.top;
auto pScreen = pdfium::MakeRetain<CFX_DIBitmap>();
if (!pScreen->Create(clip_width, clip_height, FXDIB_Argb))
return;
pScreen->Clear(0);
const uint8_t* const src_buf = pPatternBitmap->GetBuffer();
for (int col = min_col; col <= max_col; col++) {
for (int row = min_row; row <= max_row; row++) {
int start_x;
int start_y;
if (bAligned) {
start_x =
FXSYS_roundf(mtPattern2Device.e) + col * width - clip_box.left;
start_y =
FXSYS_roundf(mtPattern2Device.f) + row * height - clip_box.top;
} else {
CFX_PointF original = mtPattern2Device.Transform(
CFX_PointF(col * pPattern->x_step(), row * pPattern->y_step()));
pdfium::base::CheckedNumeric<int> safeStartX =
FXSYS_roundf(original.x + left_offset);
pdfium::base::CheckedNumeric<int> safeStartY =
FXSYS_roundf(original.y + top_offset);
safeStartX -= clip_box.left;
safeStartY -= clip_box.top;
if (!safeStartX.IsValid() || !safeStartY.IsValid())
return;
start_x = safeStartX.ValueOrDie();
start_y = safeStartY.ValueOrDie();
}
if (width == 1 && height == 1) {
if (start_x < 0 || start_x >= clip_box.Width() || start_y < 0 ||
start_y >= clip_box.Height()) {
continue;
}
uint32_t* dest_buf = reinterpret_cast<uint32_t*>(
pScreen->GetBuffer() + pScreen->GetPitch() * start_y + start_x * 4);
if (pPattern->colored()) {
const auto* src_buf32 = reinterpret_cast<const uint32_t*>(src_buf);
*dest_buf = *src_buf32;
} else {
*dest_buf = (*src_buf << 24) | (fill_argb & 0xffffff);
}
} else {
if (pPattern->colored()) {
pScreen->CompositeBitmap(start_x, start_y, width, height,
pPatternBitmap, 0, 0, BlendMode::kNormal,
nullptr, false);
} else {
pScreen->CompositeMask(start_x, start_y, width, height,
pPatternBitmap, fill_argb, 0, 0,
BlendMode::kNormal, nullptr, false);
}
}
}
}
CompositeDIBitmap(pScreen, clip_box.left, clip_box.top, 0, 255,
BlendMode::kNormal, CPDF_Transparency());
}
void CPDF_RenderStatus::DrawPathWithPattern(CPDF_PathObject* pPathObj,
const CFX_Matrix& mtObj2Device,
const CPDF_Color* pColor,
bool bStroke) {
CPDF_Pattern* pattern = pColor->GetPattern();
if (!pattern)
return;
if (CPDF_TilingPattern* pTilingPattern = pattern->AsTilingPattern())
DrawTilingPattern(pTilingPattern, pPathObj, mtObj2Device, bStroke);
else if (CPDF_ShadingPattern* pShadingPattern = pattern->AsShadingPattern())
DrawShadingPattern(pShadingPattern, pPathObj, mtObj2Device, bStroke);
}
void CPDF_RenderStatus::ProcessPathPattern(CPDF_PathObject* pPathObj,
const CFX_Matrix& mtObj2Device,
int* filltype,
bool* bStroke) {
ASSERT(filltype);
ASSERT(bStroke);
if (*filltype) {
const CPDF_Color& FillColor = *pPathObj->m_ColorState.GetFillColor();
if (FillColor.IsPattern()) {
DrawPathWithPattern(pPathObj, mtObj2Device, &FillColor, false);
*filltype = 0;
}
}
if (*bStroke) {
const CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor();
if (StrokeColor.IsPattern()) {
DrawPathWithPattern(pPathObj, mtObj2Device, &StrokeColor, true);
*bStroke = false;
}
}
}
bool CPDF_RenderStatus::ProcessImage(CPDF_ImageObject* pImageObj,
const CFX_Matrix& mtObj2Device) {
CPDF_ImageRenderer render;
if (render.Start(this, pImageObj, mtObj2Device, m_bStdCS, m_curBlend))
render.Continue(nullptr);
return render.GetResult();
}
void CPDF_RenderStatus::CompositeDIBitmap(
const RetainPtr<CFX_DIBitmap>& pDIBitmap,
int left,
int top,
FX_ARGB mask_argb,
int bitmap_alpha,
BlendMode blend_mode,
const CPDF_Transparency& transparency) {
if (!pDIBitmap)
return;
if (blend_mode == BlendMode::kNormal) {
if (!pDIBitmap->IsAlphaMask()) {
if (bitmap_alpha < 255) {
#ifdef _SKIA_SUPPORT_
std::unique_ptr<CFX_ImageRenderer> dummy;
CFX_Matrix m = CFX_RenderDevice::GetFlipMatrix(
pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), left, top);
m_pDevice->StartDIBits(pDIBitmap, bitmap_alpha, 0, m,
FXDIB_ResampleOptions(), &dummy);
return;
#else
pDIBitmap->MultiplyAlpha(bitmap_alpha);
#endif
}
#ifdef _SKIA_SUPPORT_
CFX_SkiaDeviceDriver::PreMultiply(pDIBitmap);
#endif
if (m_pDevice->SetDIBits(pDIBitmap, left, top)) {
return;
}
} else {
uint32_t fill_argb = m_Options.TranslateColor(mask_argb);
if (bitmap_alpha < 255) {
uint8_t* fill_argb8 = reinterpret_cast<uint8_t*>(&fill_argb);
fill_argb8[3] *= bitmap_alpha / 255;
}
if (m_pDevice->SetBitMask(pDIBitmap, left, top, fill_argb)) {
return;
}
}
}
bool bIsolated = transparency.IsIsolated();
bool bBackAlphaRequired =
blend_mode != BlendMode::kNormal && bIsolated && !m_bDropObjects;
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 || !transparency.IsGroup()) {
if (!pDIBitmap->IsAlphaMask())
m_pDevice->SetDIBitsWithBlend(pDIBitmap, left, top, blend_mode);
return;
}
FX_RECT rect(left, top, left + pDIBitmap->GetWidth(),
top + pDIBitmap->GetHeight());
rect.Intersect(m_pDevice->GetClipBox());
RetainPtr<CFX_DIBitmap> pClone;
if (m_pDevice->GetBackDrop() && m_pDevice->GetBitmap()) {
pClone = m_pDevice->GetBackDrop()->Clone(&rect);
if (!pClone)
return;
RetainPtr<CFX_DIBitmap> pForeBitmap = m_pDevice->GetBitmap();
pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(),
pForeBitmap, rect.left, rect.top,
BlendMode::kNormal, nullptr, false);
left = std::min(left, 0);
top = std::min(top, 0);
if (pDIBitmap->IsAlphaMask()) {
pClone->CompositeMask(0, 0, pClone->GetWidth(), pClone->GetHeight(),
pDIBitmap, mask_argb, left, top, blend_mode,
nullptr, false);
} else {
pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(),
pDIBitmap, left, top, blend_mode, nullptr,
false);
}
} else {
pClone = pDIBitmap;
}
if (m_pDevice->GetBackDrop()) {
m_pDevice->SetDIBits(pClone, rect.left, rect.top);
} else {
if (!pDIBitmap->IsAlphaMask()) {
m_pDevice->SetDIBitsWithBlend(pDIBitmap, rect.left, rect.top,
blend_mode);
}
}
return;
}
int back_left;
int back_top;
FX_RECT rect(left, top, left + pDIBitmap->GetWidth(),
top + pDIBitmap->GetHeight());
RetainPtr<CFX_DIBitmap> pBackdrop = GetBackdrop(
m_pCurObj.Get(), rect, blend_mode != BlendMode::kNormal && bIsolated,
&back_left, &back_top);
if (!pBackdrop)
return;
if (pDIBitmap->IsAlphaMask()) {
pBackdrop->CompositeMask(left - back_left, top - back_top,
pDIBitmap->GetWidth(), pDIBitmap->GetHeight(),
pDIBitmap, mask_argb, 0, 0, blend_mode, nullptr,
false);
} else {
pBackdrop->CompositeBitmap(left - back_left, top - back_top,
pDIBitmap->GetWidth(), pDIBitmap->GetHeight(),
pDIBitmap, 0, 0, blend_mode, nullptr, false);
}
auto pBackdrop1 = pdfium::MakeRetain<CFX_DIBitmap>();
pBackdrop1->Create(pBackdrop->GetWidth(), pBackdrop->GetHeight(),
FXDIB_Rgb32);
pBackdrop1->Clear((uint32_t)-1);
pBackdrop1->CompositeBitmap(0, 0, pBackdrop->GetWidth(),
pBackdrop->GetHeight(), pBackdrop, 0, 0,
BlendMode::kNormal, nullptr, false);
pBackdrop = std::move(pBackdrop1);
m_pDevice->SetDIBits(pBackdrop, back_left, back_top);
}
RetainPtr<CFX_DIBitmap> CPDF_RenderStatus::LoadSMask(
CPDF_Dictionary* pSMaskDict,
FX_RECT* pClipRect,
const CFX_Matrix* pMatrix) {
if (!pSMaskDict)
return nullptr;
CPDF_Stream* pGroup = pSMaskDict->GetStreamFor(pdfium::transparency::kG);
if (!pGroup)
return nullptr;
std::unique_ptr<CPDF_Function> pFunc;
const CPDF_Object* pFuncObj =
pSMaskDict->GetDirectObjectFor(pdfium::transparency::kTR);
if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream()))
pFunc = CPDF_Function::Load(pFuncObj);
CFX_Matrix matrix = *pMatrix;
matrix.Translate(-pClipRect->left, -pClipRect->top);
CPDF_Form form(m_pContext->GetDocument(), m_pContext->GetPageResources(),
pGroup);
form.ParseContent();
CFX_DefaultRenderDevice bitmap_device;
bool bLuminosity =
pSMaskDict->GetStringFor(pdfium::transparency::kSoftMaskSubType) !=
pdfium::transparency::kAlpha;
int width = pClipRect->right - pClipRect->left;
int height = pClipRect->bottom - pClipRect->top;
FXDIB_Format format;
#if defined(OS_MACOSX) || defined _SKIA_SUPPORT_ || defined _SKIA_SUPPORT_PATHS_
format = bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask;
#else
format = bLuminosity ? FXDIB_Rgb : FXDIB_8bppMask;
#endif
if (!bitmap_device.Create(width, height, format, nullptr))
return nullptr;
RetainPtr<CFX_DIBitmap> bitmap = bitmap_device.GetBitmap();
int nCSFamily = 0;
if (bLuminosity) {
FX_ARGB back_color =
GetBackColor(pSMaskDict, pGroup->GetDict(), &nCSFamily);
bitmap->Clear(back_color);
} else {
bitmap->Clear(0);
}
const CPDF_Dictionary* pFormResource =
form.GetDict()->GetDictFor("Resources");
CPDF_RenderOptions options;
options.SetColorMode(bLuminosity ? CPDF_RenderOptions::kNormal
: CPDF_RenderOptions::kAlpha);
CPDF_RenderStatus status(m_pContext.Get(), &bitmap_device);
status.SetOptions(options);
status.SetGroupFamily(nCSFamily);
status.SetLoadMask(bLuminosity);
status.SetStdCS(true);
status.SetFormResource(pFormResource);
status.SetDropObjects(m_bDropObjects);
status.Initialize(nullptr, nullptr);
status.RenderObjectList(&form, matrix);
auto pMask = pdfium::MakeRetain<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<uint8_t> transfers(256);
if (pFunc) {
std::vector<float> results(pFunc->CountOutputs());
for (size_t i = 0; i < transfers.size(); ++i) {
float input = i / 255.0f;
int nresult;
pFunc->Call(&input, 1, results.data(), &nresult);
transfers[i] = FXSYS_roundf(results[0] * 255);
}
} else {
// Fill |transfers| with 0, 1, ... N.
std::iota(transfers.begin(), transfers.end(), 0);
}
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 {
memcpy(dest_buf, src_buf, dest_pitch * height);
}
return pMask;
}
FX_ARGB CPDF_RenderStatus::GetBackColor(const CPDF_Dictionary* pSMaskDict,
const CPDF_Dictionary* pGroupDict,
int* pCSFamily) {
static constexpr FX_ARGB kDefaultColor = ArgbEncode(255, 0, 0, 0);
const CPDF_Array* pBC = pSMaskDict->GetArrayFor(pdfium::transparency::kBC);
if (!pBC)
return kDefaultColor;
const CPDF_Object* pCSObj = nullptr;
const CPDF_Dictionary* pGroup =
pGroupDict ? pGroupDict->GetDictFor("Group") : nullptr;
if (pGroup)
pCSObj = pGroup->GetDirectObjectFor(pdfium::transparency::kCS);
RetainPtr<CPDF_ColorSpace> pCS =
CPDF_DocPageData::FromDocument(m_pContext->GetDocument())
->GetColorSpace(pCSObj, nullptr);
if (!pCS)
return kDefaultColor;
int family = pCS->GetFamily();
if (family == PDFCS_LAB || pCS->IsSpecial() ||
(family == PDFCS_ICCBASED && !pCS->IsNormal())) {
return kDefaultColor;
}
// Store Color Space Family to use in CPDF_RenderStatus::Initialize().
*pCSFamily = family;
uint32_t comps = std::max(8u, pCS->CountComponents());
size_t count = std::min<size_t>(8, pBC->size());
std::vector<float> floats = ReadArrayElementsToVector(pBC, count);
floats.resize(comps);
float R;
float G;
float B;
pCS->GetRGB(floats.data(), &R, &G, &B);
return ArgbEncode(255, static_cast<int>(R * 255), static_cast<int>(G * 255),
static_cast<int>(B * 255));
}