// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "public/fpdfview.h"
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#include <memory>
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#include <utility>
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#include <vector>
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#include "core/fpdfapi/cpdf_modulemgr.h"
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#include "core/fpdfapi/cpdf_pagerendercontext.h"
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#include "core/fpdfapi/page/cpdf_image.h"
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#include "core/fpdfapi/page/cpdf_imageobject.h"
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#include "core/fpdfapi/page/cpdf_page.h"
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#include "core/fpdfapi/page/cpdf_pageobject.h"
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#include "core/fpdfapi/page/cpdf_pathobject.h"
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#include "core/fpdfapi/parser/cpdf_array.h"
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#include "core/fpdfapi/parser/cpdf_dictionary.h"
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#include "core/fpdfapi/parser/cpdf_document.h"
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#include "core/fpdfapi/parser/fpdf_parser_decode.h"
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#include "core/fpdfapi/render/cpdf_progressiverenderer.h"
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#include "core/fpdfapi/render/cpdf_renderoptions.h"
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#include "core/fpdfdoc/cpdf_annotlist.h"
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#include "core/fpdfdoc/cpdf_nametree.h"
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#include "core/fpdfdoc/cpdf_occontext.h"
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#include "core/fpdfdoc/cpdf_viewerpreferences.h"
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#include "core/fxcrt/fx_memory.h"
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#include "core/fxcrt/fx_safe_types.h"
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#include "core/fxcrt/fx_stream.h"
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#include "core/fxge/cfx_defaultrenderdevice.h"
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#include "core/fxge/cfx_gemodule.h"
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#include "fpdfsdk/cpdfsdk_formfillenvironment.h"
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#include "fpdfsdk/cpdfsdk_pageview.h"
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#include "fpdfsdk/fsdk_define.h"
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#include "fpdfsdk/fsdk_pauseadapter.h"
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#include "fxjs/ijs_runtime.h"
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#include "public/fpdf_edit.h"
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#include "public/fpdf_ext.h"
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#include "public/fpdf_formfill.h"
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#include "public/fpdf_progressive.h"
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#include "third_party/base/allocator/partition_allocator/partition_alloc.h"
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#include "third_party/base/numerics/safe_conversions_impl.h"
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#include "third_party/base/ptr_util.h"
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#ifdef PDF_ENABLE_XFA
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#include "fpdfsdk/fpdfxfa/cpdfxfa_context.h"
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#include "fpdfsdk/fpdfxfa/cpdfxfa_page.h"
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#include "fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h"
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#include "fxbarcode/BC_Library.h"
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#endif // PDF_ENABLE_XFA
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#if _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_
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#include "core/fxge/cfx_windowsrenderdevice.h"
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// These checks are here because core/ and public/ cannot depend on each other.
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static_assert(WindowsPrintMode::kModeEmf == FPDF_PRINTMODE_EMF,
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"WindowsPrintMode::kModeEmf value mismatch");
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static_assert(WindowsPrintMode::kModeTextOnly == FPDF_PRINTMODE_TEXTONLY,
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"WindowsPrintMode::kModeTextOnly value mismatch");
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static_assert(WindowsPrintMode::kModePostScript2 == FPDF_PRINTMODE_POSTSCRIPT2,
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"WindowsPrintMode::kModePostScript2 value mismatch");
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static_assert(WindowsPrintMode::kModePostScript3 == FPDF_PRINTMODE_POSTSCRIPT3,
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"WindowsPrintMode::kModePostScript3 value mismatch");
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#endif
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namespace {
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bool g_bLibraryInitialized = false;
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void RenderPageImpl(CPDF_PageRenderContext* pContext,
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CPDF_Page* pPage,
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const CFX_Matrix& matrix,
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const FX_RECT& clipping_rect,
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int flags,
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bool bNeedToRestore,
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IFSDK_PAUSE_Adapter* pause) {
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if (!pContext->m_pOptions)
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pContext->m_pOptions = pdfium::MakeUnique<CPDF_RenderOptions>();
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uint32_t option_flags = pContext->m_pOptions->GetFlags();
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if (flags & FPDF_LCD_TEXT)
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option_flags |= RENDER_CLEARTYPE;
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else
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option_flags &= ~RENDER_CLEARTYPE;
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if (flags & FPDF_NO_NATIVETEXT)
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option_flags |= RENDER_NO_NATIVETEXT;
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if (flags & FPDF_RENDER_LIMITEDIMAGECACHE)
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option_flags |= RENDER_LIMITEDIMAGECACHE;
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if (flags & FPDF_RENDER_FORCEHALFTONE)
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option_flags |= RENDER_FORCE_HALFTONE;
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#ifndef PDF_ENABLE_XFA
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if (flags & FPDF_RENDER_NO_SMOOTHTEXT)
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option_flags |= RENDER_NOTEXTSMOOTH;
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if (flags & FPDF_RENDER_NO_SMOOTHIMAGE)
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option_flags |= RENDER_NOIMAGESMOOTH;
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if (flags & FPDF_RENDER_NO_SMOOTHPATH)
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option_flags |= RENDER_NOPATHSMOOTH;
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#endif // PDF_ENABLE_XFA
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pContext->m_pOptions->SetFlags(option_flags);
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// Grayscale output
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if (flags & FPDF_GRAYSCALE)
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pContext->m_pOptions->SetColorMode(CPDF_RenderOptions::kGray);
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const CPDF_OCContext::UsageType usage =
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(flags & FPDF_PRINTING) ? CPDF_OCContext::Print : CPDF_OCContext::View;
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pContext->m_pOptions->SetOCContext(
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pdfium::MakeRetain<CPDF_OCContext>(pPage->m_pDocument.Get(), usage));
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pContext->m_pDevice->SaveState();
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pContext->m_pDevice->SetClip_Rect(clipping_rect);
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pContext->m_pContext = pdfium::MakeUnique<CPDF_RenderContext>(pPage);
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pContext->m_pContext->AppendLayer(pPage, &matrix);
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if (flags & FPDF_ANNOT) {
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pContext->m_pAnnots = pdfium::MakeUnique<CPDF_AnnotList>(pPage);
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bool bPrinting = pContext->m_pDevice->GetDeviceClass() != FXDC_DISPLAY;
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pContext->m_pAnnots->DisplayAnnots(pPage, pContext->m_pContext.get(),
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bPrinting, &matrix, false, nullptr);
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}
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pContext->m_pRenderer = pdfium::MakeUnique<CPDF_ProgressiveRenderer>(
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pContext->m_pContext.get(), pContext->m_pDevice.get(),
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pContext->m_pOptions.get());
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pContext->m_pRenderer->Start(pause);
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if (bNeedToRestore)
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pContext->m_pDevice->RestoreState(false);
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}
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class CPDF_CustomAccess final : public IFX_SeekableReadStream {
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public:
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template <typename T, typename... Args>
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friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
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// IFX_SeekableReadStream
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FX_FILESIZE GetSize() override;
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bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
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private:
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explicit CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess);
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FPDF_FILEACCESS m_FileAccess;
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};
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CPDF_CustomAccess::CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess)
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: m_FileAccess(*pFileAccess) {}
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FX_FILESIZE CPDF_CustomAccess::GetSize() {
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return m_FileAccess.m_FileLen;
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}
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bool CPDF_CustomAccess::ReadBlock(void* buffer,
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FX_FILESIZE offset,
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size_t size) {
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if (offset < 0)
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return false;
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FX_SAFE_FILESIZE newPos = pdfium::base::checked_cast<FX_FILESIZE>(size);
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newPos += offset;
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if (!newPos.IsValid() ||
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newPos.ValueOrDie() > static_cast<FX_FILESIZE>(m_FileAccess.m_FileLen)) {
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return false;
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}
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return !!m_FileAccess.m_GetBlock(m_FileAccess.m_Param, offset,
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static_cast<uint8_t*>(buffer), size);
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}
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#ifdef PDF_ENABLE_XFA
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class FPDF_FileHandlerContext : public IFX_SeekableStream {
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public:
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template <typename T, typename... Args>
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friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
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~FPDF_FileHandlerContext() override;
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// IFX_SeekableStream:
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FX_FILESIZE GetSize() override;
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bool IsEOF() override;
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FX_FILESIZE GetPosition() override;
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bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
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size_t ReadBlock(void* buffer, size_t size) override;
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bool WriteBlock(const void* buffer, FX_FILESIZE offset, size_t size) override;
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bool Flush() override;
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void SetPosition(FX_FILESIZE pos) { m_nCurPos = pos; }
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protected:
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explicit FPDF_FileHandlerContext(FPDF_FILEHANDLER* pFS);
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FPDF_FILEHANDLER* m_pFS;
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FX_FILESIZE m_nCurPos;
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};
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FPDF_FileHandlerContext::FPDF_FileHandlerContext(FPDF_FILEHANDLER* pFS) {
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m_pFS = pFS;
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m_nCurPos = 0;
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}
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FPDF_FileHandlerContext::~FPDF_FileHandlerContext() {
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if (m_pFS && m_pFS->Release)
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m_pFS->Release(m_pFS->clientData);
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}
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FX_FILESIZE FPDF_FileHandlerContext::GetSize() {
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if (m_pFS && m_pFS->GetSize)
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return (FX_FILESIZE)m_pFS->GetSize(m_pFS->clientData);
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return 0;
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}
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bool FPDF_FileHandlerContext::IsEOF() {
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return m_nCurPos >= GetSize();
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}
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FX_FILESIZE FPDF_FileHandlerContext::GetPosition() {
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return m_nCurPos;
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}
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bool FPDF_FileHandlerContext::ReadBlock(void* buffer,
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FX_FILESIZE offset,
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size_t size) {
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if (!buffer || !size || !m_pFS->ReadBlock)
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return false;
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if (m_pFS->ReadBlock(m_pFS->clientData, (FPDF_DWORD)offset, buffer,
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(FPDF_DWORD)size) == 0) {
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m_nCurPos = offset + size;
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return true;
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}
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return false;
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}
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size_t FPDF_FileHandlerContext::ReadBlock(void* buffer, size_t size) {
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if (!buffer || !size || !m_pFS->ReadBlock)
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return 0;
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FX_FILESIZE nSize = GetSize();
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if (m_nCurPos >= nSize)
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return 0;
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FX_FILESIZE dwAvail = nSize - m_nCurPos;
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if (dwAvail < (FX_FILESIZE)size)
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size = static_cast<size_t>(dwAvail);
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if (m_pFS->ReadBlock(m_pFS->clientData, (FPDF_DWORD)m_nCurPos, buffer,
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(FPDF_DWORD)size) == 0) {
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m_nCurPos += size;
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return size;
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}
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return 0;
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}
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bool FPDF_FileHandlerContext::WriteBlock(const void* buffer,
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FX_FILESIZE offset,
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size_t size) {
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if (!m_pFS || !m_pFS->WriteBlock)
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return false;
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if (m_pFS->WriteBlock(m_pFS->clientData, (FPDF_DWORD)offset, buffer,
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(FPDF_DWORD)size) == 0) {
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m_nCurPos = offset + size;
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return true;
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}
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return false;
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}
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bool FPDF_FileHandlerContext::Flush() {
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if (!m_pFS || !m_pFS->Flush)
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return true;
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return m_pFS->Flush(m_pFS->clientData) == 0;
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}
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#endif // PDF_ENABLE_XFA
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FPDF_DOCUMENT LoadDocumentImpl(
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const RetainPtr<IFX_SeekableReadStream>& pFileAccess,
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FPDF_BYTESTRING password) {
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if (!pFileAccess) {
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ProcessParseError(CPDF_Parser::FILE_ERROR);
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return nullptr;
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}
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auto pParser = pdfium::MakeUnique<CPDF_Parser>();
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pParser->SetPassword(password);
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auto pDocument = pdfium::MakeUnique<CPDF_Document>(std::move(pParser));
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CPDF_Parser::Error error =
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pDocument->GetParser()->StartParse(pFileAccess, pDocument.get());
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if (error != CPDF_Parser::SUCCESS) {
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ProcessParseError(error);
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return nullptr;
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}
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CheckUnSupportError(pDocument.get(), error);
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return FPDFDocumentFromCPDFDocument(pDocument.release());
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}
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} // namespace
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UnderlyingDocumentType* UnderlyingFromFPDFDocument(FPDF_DOCUMENT doc) {
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return static_cast<UnderlyingDocumentType*>(doc);
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}
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FPDF_DOCUMENT FPDFDocumentFromUnderlying(UnderlyingDocumentType* doc) {
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return static_cast<FPDF_DOCUMENT>(doc);
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}
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UnderlyingPageType* UnderlyingFromFPDFPage(FPDF_PAGE page) {
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return static_cast<UnderlyingPageType*>(page);
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}
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CPDF_Document* CPDFDocumentFromFPDFDocument(FPDF_DOCUMENT doc) {
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#ifdef PDF_ENABLE_XFA
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return doc ? UnderlyingFromFPDFDocument(doc)->GetPDFDoc() : nullptr;
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#else // PDF_ENABLE_XFA
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return UnderlyingFromFPDFDocument(doc);
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#endif // PDF_ENABLE_XFA
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}
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FPDF_DOCUMENT FPDFDocumentFromCPDFDocument(CPDF_Document* doc) {
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#ifdef PDF_ENABLE_XFA
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return doc ? FPDFDocumentFromUnderlying(
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new CPDFXFA_Context(pdfium::WrapUnique(doc)))
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: nullptr;
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#else // PDF_ENABLE_XFA
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return FPDFDocumentFromUnderlying(doc);
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#endif // PDF_ENABLE_XFA
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}
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CPDF_Page* CPDFPageFromFPDFPage(FPDF_PAGE page) {
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#ifdef PDF_ENABLE_XFA
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return page ? UnderlyingFromFPDFPage(page)->GetPDFPage() : nullptr;
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#else // PDF_ENABLE_XFA
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return UnderlyingFromFPDFPage(page);
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#endif // PDF_ENABLE_XFA
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}
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CPDF_PathObject* CPDFPathObjectFromFPDFPageObject(FPDF_PAGEOBJECT page_object) {
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auto* obj = CPDFPageObjectFromFPDFPageObject(page_object);
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return obj ? obj->AsPath() : nullptr;
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}
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CPDF_PageObject* CPDFPageObjectFromFPDFPageObject(FPDF_PAGEOBJECT page_object) {
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return static_cast<CPDF_PageObject*>(page_object);
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}
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CPDF_Object* CPDFObjectFromFPDFAttachment(FPDF_ATTACHMENT attachment) {
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return static_cast<CPDF_Object*>(attachment);
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}
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ByteString CFXByteStringFromFPDFWideString(FPDF_WIDESTRING wide_string) {
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return WideString::FromUTF16LE(wide_string,
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WideString::WStringLength(wide_string))
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.UTF8Encode();
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}
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CFX_DIBitmap* CFXBitmapFromFPDFBitmap(FPDF_BITMAP bitmap) {
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return static_cast<CFX_DIBitmap*>(bitmap);
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}
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CFX_FloatRect CFXFloatRectFromFSRECTF(const FS_RECTF& rect) {
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return CFX_FloatRect(rect.left, rect.bottom, rect.right, rect.top);
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}
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void FSRECTFFromCFXFloatRect(const CFX_FloatRect& rect, FS_RECTF* out_rect) {
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out_rect->left = rect.left;
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out_rect->top = rect.top;
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out_rect->right = rect.right;
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out_rect->bottom = rect.bottom;
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}
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const FX_PATHPOINT* FXPathPointFromFPDFPathSegment(FPDF_PATHSEGMENT segment) {
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return static_cast<const FX_PATHPOINT*>(segment);
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}
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unsigned long Utf16EncodeMaybeCopyAndReturnLength(const WideString& text,
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void* buffer,
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unsigned long buflen) {
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ByteString encoded_text = text.UTF16LE_Encode();
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unsigned long len = encoded_text.GetLength();
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if (buffer && len <= buflen)
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memcpy(buffer, encoded_text.c_str(), len);
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return len;
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}
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unsigned long DecodeStreamMaybeCopyAndReturnLength(const CPDF_Stream* stream,
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void* buffer,
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unsigned long buflen) {
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ASSERT(stream);
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uint8_t* data = stream->GetRawData();
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uint32_t len = stream->GetRawSize();
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CPDF_Dictionary* dict = stream->GetDict();
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CPDF_Object* decoder = dict ? dict->GetDirectObjectFor("Filter") : nullptr;
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if (decoder && (decoder->IsArray() || decoder->IsName())) {
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// Decode the stream if one or more stream filters are specified.
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uint8_t* decoded_data = nullptr;
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uint32_t decoded_len = 0;
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ByteString dummy_last_decoder;
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CPDF_Dictionary* dummy_last_param;
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if (PDF_DataDecode(data, len, dict, dict->GetIntegerFor("DL"), false,
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&decoded_data, &decoded_len, &dummy_last_decoder,
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&dummy_last_param)) {
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if (buffer && buflen >= decoded_len)
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memcpy(buffer, decoded_data, decoded_len);
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// Free the buffer for the decoded data if it was allocated by
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// PDF_DataDecode(). Note that for images with a single image-specific
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// filter, |decoded_data| is directly assigned to be |data|, so
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// |decoded_data| does not need to be freed.
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if (decoded_data != data)
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FX_Free(decoded_data);
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return decoded_len;
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}
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}
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// Copy the raw data and return its length if there is no valid filter
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// specified or if decoding failed.
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if (buffer && buflen >= len)
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memcpy(buffer, data, len);
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return len;
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}
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RetainPtr<IFX_SeekableReadStream> MakeSeekableReadStream(
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FPDF_FILEACCESS* pFileAccess) {
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return pdfium::MakeRetain<CPDF_CustomAccess>(pFileAccess);
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}
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#ifdef PDF_ENABLE_XFA
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RetainPtr<IFX_SeekableStream> MakeSeekableStream(
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FPDF_FILEHANDLER* pFilehandler) {
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return pdfium::MakeRetain<FPDF_FileHandlerContext>(pFilehandler);
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}
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#endif // PDF_ENABLE_XFA
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// 0 bit: FPDF_POLICY_MACHINETIME_ACCESS
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static uint32_t foxit_sandbox_policy = 0xFFFFFFFF;
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void FSDK_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable) {
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switch (policy) {
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case FPDF_POLICY_MACHINETIME_ACCESS: {
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if (enable)
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foxit_sandbox_policy |= 0x01;
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else
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foxit_sandbox_policy &= 0xFFFFFFFE;
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} break;
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default:
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break;
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}
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}
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FPDF_BOOL FSDK_IsSandBoxPolicyEnabled(FPDF_DWORD policy) {
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switch (policy) {
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case FPDF_POLICY_MACHINETIME_ACCESS:
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return !!(foxit_sandbox_policy & 0x01);
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default:
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return false;
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}
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}
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FPDF_EXPORT void FPDF_CALLCONV FPDF_InitLibrary() {
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FPDF_InitLibraryWithConfig(nullptr);
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}
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FPDF_EXPORT void FPDF_CALLCONV
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FPDF_InitLibraryWithConfig(const FPDF_LIBRARY_CONFIG* cfg) {
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if (g_bLibraryInitialized)
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return;
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FXMEM_InitializePartitionAlloc();
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CFX_GEModule* pModule = CFX_GEModule::Get();
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pModule->Init(cfg ? cfg->m_pUserFontPaths : nullptr);
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CPDF_ModuleMgr* pModuleMgr = CPDF_ModuleMgr::Get();
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pModuleMgr->Init();
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#ifdef PDF_ENABLE_XFA
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BC_Library_Init();
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#endif // PDF_ENABLE_XFA
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if (cfg && cfg->version >= 2)
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IJS_Runtime::Initialize(cfg->m_v8EmbedderSlot, cfg->m_pIsolate);
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g_bLibraryInitialized = true;
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}
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FPDF_EXPORT void FPDF_CALLCONV FPDF_DestroyLibrary() {
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if (!g_bLibraryInitialized)
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return;
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#ifdef PDF_ENABLE_XFA
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BC_Library_Destroy();
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#endif // PDF_ENABLE_XFA
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CPDF_ModuleMgr::Destroy();
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CFX_GEModule::Destroy();
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IJS_Runtime::Destroy();
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g_bLibraryInitialized = false;
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}
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#ifndef _WIN32
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int g_LastError;
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void SetLastError(int err) {
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g_LastError = err;
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}
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int GetLastError() {
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return g_LastError;
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}
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#endif // _WIN32
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void ProcessParseError(CPDF_Parser::Error err) {
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uint32_t err_code = FPDF_ERR_SUCCESS;
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// Translate FPDFAPI error code to FPDFVIEW error code
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switch (err) {
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case CPDF_Parser::SUCCESS:
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err_code = FPDF_ERR_SUCCESS;
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break;
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case CPDF_Parser::FILE_ERROR:
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err_code = FPDF_ERR_FILE;
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break;
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case CPDF_Parser::FORMAT_ERROR:
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err_code = FPDF_ERR_FORMAT;
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break;
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case CPDF_Parser::PASSWORD_ERROR:
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err_code = FPDF_ERR_PASSWORD;
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break;
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case CPDF_Parser::HANDLER_ERROR:
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err_code = FPDF_ERR_SECURITY;
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break;
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}
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SetLastError(err_code);
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}
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FPDF_EXPORT void FPDF_CALLCONV FPDF_SetSandBoxPolicy(FPDF_DWORD policy,
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FPDF_BOOL enable) {
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return FSDK_SetSandBoxPolicy(policy, enable);
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}
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#if defined(_WIN32)
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#if defined(PDFIUM_PRINT_TEXT_WITH_GDI)
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FPDF_EXPORT void FPDF_CALLCONV
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FPDF_SetTypefaceAccessibleFunc(PDFiumEnsureTypefaceCharactersAccessible func) {
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g_pdfium_typeface_accessible_func = func;
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}
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FPDF_EXPORT void FPDF_CALLCONV FPDF_SetPrintTextWithGDI(FPDF_BOOL use_gdi) {
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g_pdfium_print_text_with_gdi = !!use_gdi;
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}
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#endif // PDFIUM_PRINT_TEXT_WITH_GDI
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FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
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FPDF_SetPrintPostscriptLevel(int postscript_level) {
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return postscript_level != 1 && FPDF_SetPrintMode(postscript_level);
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}
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FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDF_SetPrintMode(int mode) {
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if (mode < FPDF_PRINTMODE_EMF || mode > FPDF_PRINTMODE_POSTSCRIPT3)
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return FALSE;
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g_pdfium_print_mode = mode;
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return TRUE;
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}
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#endif // defined(_WIN32)
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FPDF_EXPORT FPDF_DOCUMENT FPDF_CALLCONV
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FPDF_LoadDocument(FPDF_STRING file_path, FPDF_BYTESTRING password) {
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// NOTE: the creation of the file needs to be by the embedder on the
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// other side of this API.
|
return LoadDocumentImpl(IFX_SeekableReadStream::CreateFromFilename(file_path),
|
password);
|
}
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDF_GetFormType(FPDF_DOCUMENT document) {
|
if (!document)
|
return false;
|
|
const CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return FORMTYPE_NONE;
|
|
const CPDF_Dictionary* pRoot = pDoc->GetRoot();
|
if (!pRoot)
|
return FORMTYPE_NONE;
|
|
CPDF_Dictionary* pAcroForm = pRoot->GetDictFor("AcroForm");
|
if (!pAcroForm)
|
return FORMTYPE_NONE;
|
|
CPDF_Object* pXFA = pAcroForm->GetObjectFor("XFA");
|
if (!pXFA)
|
return FORMTYPE_ACRO_FORM;
|
|
bool needsRendering = pRoot->GetBooleanFor("NeedsRendering", false);
|
return needsRendering ? FORMTYPE_XFA_FULL : FORMTYPE_XFA_FOREGROUND;
|
}
|
|
#ifdef PDF_ENABLE_XFA
|
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDF_LoadXFA(FPDF_DOCUMENT document) {
|
return document && static_cast<CPDFXFA_Context*>(document)->LoadXFADoc();
|
}
|
#endif // PDF_ENABLE_XFA
|
|
class CMemFile final : public IFX_SeekableReadStream {
|
public:
|
static RetainPtr<CMemFile> Create(const uint8_t* pBuf, FX_FILESIZE size) {
|
return RetainPtr<CMemFile>(new CMemFile(pBuf, size));
|
}
|
|
FX_FILESIZE GetSize() override { return m_size; }
|
bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override {
|
if (offset < 0)
|
return false;
|
|
FX_SAFE_FILESIZE newPos = pdfium::base::checked_cast<FX_FILESIZE>(size);
|
newPos += offset;
|
if (!newPos.IsValid() || newPos.ValueOrDie() > m_size)
|
return false;
|
|
memcpy(buffer, m_pBuf + offset, size);
|
return true;
|
}
|
|
private:
|
CMemFile(const uint8_t* pBuf, FX_FILESIZE size)
|
: m_pBuf(pBuf), m_size(size) {}
|
|
const uint8_t* const m_pBuf;
|
const FX_FILESIZE m_size;
|
};
|
|
FPDF_EXPORT FPDF_DOCUMENT FPDF_CALLCONV
|
FPDF_LoadMemDocument(const void* data_buf, int size, FPDF_BYTESTRING password) {
|
return LoadDocumentImpl(
|
CMemFile::Create(static_cast<const uint8_t*>(data_buf), size), password);
|
}
|
|
FPDF_EXPORT FPDF_DOCUMENT FPDF_CALLCONV
|
FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess,
|
FPDF_BYTESTRING password) {
|
return LoadDocumentImpl(pdfium::MakeRetain<CPDF_CustomAccess>(pFileAccess),
|
password);
|
}
|
|
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDF_GetFileVersion(FPDF_DOCUMENT doc,
|
int* fileVersion) {
|
if (!fileVersion)
|
return false;
|
|
*fileVersion = 0;
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(doc);
|
if (!pDoc)
|
return false;
|
|
const CPDF_Parser* pParser = pDoc->GetParser();
|
if (!pParser)
|
return false;
|
|
*fileVersion = pParser->GetFileVersion();
|
return true;
|
}
|
|
// jabdelmalek: changed return type from uint32_t to build on Linux (and match
|
// header).
|
FPDF_EXPORT unsigned long FPDF_CALLCONV
|
FPDF_GetDocPermissions(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
// https://bugs.chromium.org/p/pdfium/issues/detail?id=499
|
if (!pDoc) {
|
#ifndef PDF_ENABLE_XFA
|
return 0;
|
#else // PDF_ENABLE_XFA
|
return 0xFFFFFFFF;
|
#endif // PDF_ENABLE_XFA
|
}
|
|
return pDoc->GetUserPermissions();
|
}
|
|
FPDF_EXPORT int FPDF_CALLCONV
|
FPDF_GetSecurityHandlerRevision(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc || !pDoc->GetParser())
|
return -1;
|
|
CPDF_Dictionary* pDict = pDoc->GetParser()->GetEncryptDict();
|
return pDict ? pDict->GetIntegerFor("R") : -1;
|
}
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDF_GetPageCount(FPDF_DOCUMENT document) {
|
UnderlyingDocumentType* pDoc = UnderlyingFromFPDFDocument(document);
|
return pDoc ? pDoc->GetPageCount() : 0;
|
}
|
|
FPDF_EXPORT FPDF_PAGE FPDF_CALLCONV FPDF_LoadPage(FPDF_DOCUMENT document,
|
int page_index) {
|
UnderlyingDocumentType* pDoc = UnderlyingFromFPDFDocument(document);
|
if (!pDoc)
|
return nullptr;
|
|
if (page_index < 0 || page_index >= pDoc->GetPageCount())
|
return nullptr;
|
|
#ifdef PDF_ENABLE_XFA
|
return pDoc->GetXFAPage(page_index).Leak();
|
#else // PDF_ENABLE_XFA
|
CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
|
if (!pDict)
|
return nullptr;
|
|
CPDF_Page* pPage = new CPDF_Page(pDoc, pDict, true);
|
pPage->ParseContent();
|
return pPage;
|
#endif // PDF_ENABLE_XFA
|
}
|
|
FPDF_EXPORT double FPDF_CALLCONV FPDF_GetPageWidth(FPDF_PAGE page) {
|
UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
|
return pPage ? pPage->GetPageWidth() : 0.0;
|
}
|
|
FPDF_EXPORT double FPDF_CALLCONV FPDF_GetPageHeight(FPDF_PAGE page) {
|
UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
|
return pPage ? pPage->GetPageHeight() : 0.0;
|
}
|
|
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDF_GetPageBoundingBox(FPDF_PAGE page,
|
FS_RECTF* rect) {
|
if (!rect)
|
return false;
|
|
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
|
if (!pPage)
|
return false;
|
|
FSRECTFFromCFXFloatRect(pPage->GetPageBBox(), rect);
|
return true;
|
}
|
|
#if defined(_WIN32)
|
namespace {
|
|
const double kEpsilonSize = 0.01f;
|
|
void GetScaling(CPDF_Page* pPage,
|
int size_x,
|
int size_y,
|
int rotate,
|
double* scale_x,
|
double* scale_y) {
|
ASSERT(pPage);
|
ASSERT(scale_x);
|
ASSERT(scale_y);
|
double page_width = pPage->GetPageWidth();
|
double page_height = pPage->GetPageHeight();
|
if (page_width < kEpsilonSize || page_height < kEpsilonSize)
|
return;
|
|
if (rotate % 2 == 0) {
|
*scale_x = size_x / page_width;
|
*scale_y = size_y / page_height;
|
} else {
|
*scale_x = size_y / page_width;
|
*scale_y = size_x / page_height;
|
}
|
}
|
|
FX_RECT GetMaskDimensionsAndOffsets(CPDF_Page* pPage,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
const CFX_FloatRect& mask_box) {
|
double scale_x = 0.0f;
|
double scale_y = 0.0f;
|
GetScaling(pPage, size_x, size_y, rotate, &scale_x, &scale_y);
|
if (scale_x < kEpsilonSize || scale_y < kEpsilonSize)
|
return FX_RECT();
|
|
// Compute sizes in page points. Round down to catch the entire bitmap.
|
int start_x_bm = static_cast<int>(mask_box.left * scale_x);
|
int start_y_bm = static_cast<int>(mask_box.bottom * scale_y);
|
int size_x_bm = static_cast<int>(mask_box.right * scale_x + 1.0f) -
|
static_cast<int>(mask_box.left * scale_x);
|
int size_y_bm = static_cast<int>(mask_box.top * scale_y + 1.0f) -
|
static_cast<int>(mask_box.bottom * scale_y);
|
|
// Get page rotation
|
int page_rotation = pPage->GetPageRotation();
|
|
// Compute offsets
|
int offset_x = 0;
|
int offset_y = 0;
|
if (size_x > size_y)
|
std::swap(size_x_bm, size_y_bm);
|
|
switch ((rotate + page_rotation) % 4) {
|
case 0:
|
offset_x = start_x_bm + start_x;
|
offset_y = start_y + size_y - size_y_bm - start_y_bm;
|
break;
|
case 1:
|
offset_x = start_y_bm + start_x;
|
offset_y = start_x_bm + start_y;
|
break;
|
case 2:
|
offset_x = start_x + size_x - size_x_bm - start_x_bm;
|
offset_y = start_y_bm + start_y;
|
break;
|
case 3:
|
offset_x = start_x + size_x - size_x_bm - start_y_bm;
|
offset_y = start_y + size_y - size_y_bm - start_x_bm;
|
break;
|
}
|
return FX_RECT(offset_x, offset_y, offset_x + size_x_bm,
|
offset_y + size_y_bm);
|
}
|
|
// Get a bitmap of just the mask section defined by |mask_box| from a full page
|
// bitmap |pBitmap|.
|
RetainPtr<CFX_DIBitmap> GetMaskBitmap(CPDF_Page* pPage,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
const RetainPtr<CFX_DIBitmap>& pSrc,
|
const CFX_FloatRect& mask_box,
|
FX_RECT* bitmap_area) {
|
ASSERT(bitmap_area);
|
*bitmap_area = GetMaskDimensionsAndOffsets(pPage, start_x, start_y, size_x,
|
size_y, rotate, mask_box);
|
if (bitmap_area->IsEmpty())
|
return nullptr;
|
|
// Create a new bitmap to transfer part of the page bitmap to.
|
RetainPtr<CFX_DIBitmap> pDst = pdfium::MakeRetain<CFX_DIBitmap>();
|
pDst->Create(bitmap_area->Width(), bitmap_area->Height(), FXDIB_Argb);
|
pDst->Clear(0x00ffffff);
|
pDst->TransferBitmap(0, 0, bitmap_area->Width(), bitmap_area->Height(), pSrc,
|
bitmap_area->left, bitmap_area->top);
|
return pDst;
|
}
|
|
void RenderBitmap(CFX_RenderDevice* device,
|
const RetainPtr<CFX_DIBitmap>& pSrc,
|
const FX_RECT& mask_area) {
|
int size_x_bm = mask_area.Width();
|
int size_y_bm = mask_area.Height();
|
if (size_x_bm == 0 || size_y_bm == 0)
|
return;
|
|
// Create a new bitmap from the old one
|
RetainPtr<CFX_DIBitmap> pDst = pdfium::MakeRetain<CFX_DIBitmap>();
|
pDst->Create(size_x_bm, size_y_bm, FXDIB_Rgb32);
|
pDst->Clear(0xffffffff);
|
pDst->CompositeBitmap(0, 0, size_x_bm, size_y_bm, pSrc, 0, 0,
|
FXDIB_BLEND_NORMAL, nullptr, false);
|
|
if (device->GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) {
|
device->StretchDIBits(pDst, mask_area.left, mask_area.top, size_x_bm,
|
size_y_bm);
|
} else {
|
device->SetDIBits(pDst, mask_area.left, mask_area.top);
|
}
|
}
|
|
} // namespace
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDF_RenderPage(HDC dc,
|
FPDF_PAGE page,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
int flags) {
|
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
|
if (!pPage)
|
return;
|
pPage->SetRenderContext(pdfium::MakeUnique<CPDF_PageRenderContext>());
|
CPDF_PageRenderContext* pContext = pPage->GetRenderContext();
|
|
RetainPtr<CFX_DIBitmap> pBitmap;
|
// Don't render the full page to bitmap for a mask unless there are a lot
|
// of masks. Full page bitmaps result in large spool sizes, so they should
|
// only be used when necessary. For large numbers of masks, rendering each
|
// individually is inefficient and unlikely to significantly improve spool
|
// size. TODO (rbpotter): Find out why this still breaks printing for some
|
// PDFs (see crbug.com/777837).
|
const bool bEnableImageMasks = false;
|
const bool bNewBitmap = pPage->BackgroundAlphaNeeded() ||
|
(pPage->HasImageMask() && !bEnableImageMasks) ||
|
pPage->GetMaskBoundingBoxes().size() > 100;
|
const bool bHasMask = pPage->HasImageMask() && !bNewBitmap;
|
if (bNewBitmap || bHasMask) {
|
pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
|
pBitmap->Create(size_x, size_y, FXDIB_Argb);
|
pBitmap->Clear(0x00ffffff);
|
CFX_DefaultRenderDevice* pDevice = new CFX_DefaultRenderDevice;
|
pContext->m_pDevice = pdfium::WrapUnique(pDevice);
|
pDevice->Attach(pBitmap, false, nullptr, false);
|
if (bHasMask) {
|
pContext->m_pOptions = pdfium::MakeUnique<CPDF_RenderOptions>();
|
uint32_t option_flags = pContext->m_pOptions->GetFlags();
|
option_flags |= RENDER_BREAKFORMASKS;
|
pContext->m_pOptions->SetFlags(option_flags);
|
}
|
} else {
|
pContext->m_pDevice = pdfium::MakeUnique<CFX_WindowsRenderDevice>(dc);
|
}
|
|
FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
|
rotate, flags, true, nullptr);
|
|
if (bHasMask) {
|
// Finish rendering the page to bitmap and copy the correct segments
|
// of the page to individual image mask bitmaps.
|
const std::vector<CFX_FloatRect>& mask_boxes =
|
pPage->GetMaskBoundingBoxes();
|
std::vector<FX_RECT> bitmap_areas(mask_boxes.size());
|
std::vector<RetainPtr<CFX_DIBitmap>> bitmaps(mask_boxes.size());
|
for (size_t i = 0; i < mask_boxes.size(); i++) {
|
bitmaps[i] =
|
GetMaskBitmap(pPage, start_x, start_y, size_x, size_y, rotate,
|
pBitmap, mask_boxes[i], &bitmap_areas[i]);
|
pContext->m_pRenderer->Continue(nullptr);
|
}
|
|
// Reset rendering context
|
pPage->SetRenderContext(nullptr);
|
|
// Begin rendering to the printer. Add flag to indicate the renderer should
|
// pause after each image mask.
|
pPage->SetRenderContext(pdfium::MakeUnique<CPDF_PageRenderContext>());
|
pContext = pPage->GetRenderContext();
|
pContext->m_pDevice = pdfium::MakeUnique<CFX_WindowsRenderDevice>(dc);
|
pContext->m_pOptions = pdfium::MakeUnique<CPDF_RenderOptions>();
|
|
uint32_t option_flags = pContext->m_pOptions->GetFlags();
|
option_flags |= RENDER_BREAKFORMASKS;
|
pContext->m_pOptions->SetFlags(option_flags);
|
|
FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
|
rotate, flags, true, nullptr);
|
|
// Render masks
|
for (size_t i = 0; i < mask_boxes.size(); i++) {
|
// Render the bitmap for the mask and free the bitmap.
|
if (bitmaps[i]) { // will be null if mask has zero area
|
RenderBitmap(pContext->m_pDevice.get(), bitmaps[i], bitmap_areas[i]);
|
}
|
// Render the next portion of page.
|
pContext->m_pRenderer->Continue(nullptr);
|
}
|
} else if (bNewBitmap) {
|
CFX_WindowsRenderDevice WinDC(dc);
|
if (WinDC.GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) {
|
auto pDst = pdfium::MakeRetain<CFX_DIBitmap>();
|
int pitch = pBitmap->GetPitch();
|
pDst->Create(size_x, size_y, FXDIB_Rgb32);
|
memset(pDst->GetBuffer(), -1, pitch * size_y);
|
pDst->CompositeBitmap(0, 0, size_x, size_y, pBitmap, 0, 0,
|
FXDIB_BLEND_NORMAL, nullptr, false);
|
WinDC.StretchDIBits(pDst, 0, 0, size_x, size_y);
|
} else {
|
WinDC.SetDIBits(pBitmap, 0, 0);
|
}
|
}
|
|
pPage->SetRenderContext(nullptr);
|
}
|
#endif // defined(_WIN32)
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDF_RenderPageBitmap(FPDF_BITMAP bitmap,
|
FPDF_PAGE page,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
int flags) {
|
if (!bitmap)
|
return;
|
|
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
|
if (!pPage)
|
return;
|
|
CPDF_PageRenderContext* pContext = new CPDF_PageRenderContext;
|
pPage->SetRenderContext(pdfium::WrapUnique(pContext));
|
|
CFX_DefaultRenderDevice* pDevice = new CFX_DefaultRenderDevice;
|
pContext->m_pDevice.reset(pDevice);
|
|
RetainPtr<CFX_DIBitmap> pBitmap(CFXBitmapFromFPDFBitmap(bitmap));
|
pDevice->Attach(pBitmap, !!(flags & FPDF_REVERSE_BYTE_ORDER), nullptr, false);
|
FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
|
rotate, flags, true, nullptr);
|
|
#ifdef _SKIA_SUPPORT_PATHS_
|
pDevice->Flush(true);
|
pBitmap->UnPreMultiply();
|
#endif
|
pPage->SetRenderContext(nullptr);
|
}
|
|
FPDF_EXPORT void FPDF_CALLCONV
|
FPDF_RenderPageBitmapWithMatrix(FPDF_BITMAP bitmap,
|
FPDF_PAGE page,
|
const FS_MATRIX* matrix,
|
const FS_RECTF* clipping,
|
int flags) {
|
if (!bitmap)
|
return;
|
|
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
|
if (!pPage)
|
return;
|
|
CPDF_PageRenderContext* pContext = new CPDF_PageRenderContext;
|
pPage->SetRenderContext(pdfium::WrapUnique(pContext));
|
|
CFX_DefaultRenderDevice* pDevice = new CFX_DefaultRenderDevice;
|
pContext->m_pDevice.reset(pDevice);
|
|
RetainPtr<CFX_DIBitmap> pBitmap(CFXBitmapFromFPDFBitmap(bitmap));
|
pDevice->Attach(pBitmap, !!(flags & FPDF_REVERSE_BYTE_ORDER), nullptr, false);
|
|
CFX_FloatRect clipping_rect;
|
if (clipping)
|
clipping_rect = CFXFloatRectFromFSRECTF(*clipping);
|
FX_RECT clip_rect = clipping_rect.ToFxRect();
|
|
CFX_Matrix transform_matrix = pPage->GetDisplayMatrix(
|
0, 0, pPage->GetPageWidth(), pPage->GetPageHeight(), 0);
|
|
if (matrix) {
|
transform_matrix.Concat(CFX_Matrix(matrix->a, matrix->b, matrix->c,
|
matrix->d, matrix->e, matrix->f));
|
}
|
RenderPageImpl(pContext, pPage, transform_matrix, clip_rect, flags, true,
|
nullptr);
|
|
pPage->SetRenderContext(nullptr);
|
}
|
|
#ifdef _SKIA_SUPPORT_
|
FPDF_EXPORT FPDF_RECORDER FPDF_CALLCONV FPDF_RenderPageSkp(FPDF_PAGE page,
|
int size_x,
|
int size_y) {
|
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
|
if (!pPage)
|
return nullptr;
|
|
CPDF_PageRenderContext* pContext = new CPDF_PageRenderContext;
|
pPage->SetRenderContext(pdfium::WrapUnique(pContext));
|
CFX_DefaultRenderDevice* skDevice = new CFX_DefaultRenderDevice;
|
FPDF_RECORDER recorder = skDevice->CreateRecorder(size_x, size_y);
|
pContext->m_pDevice.reset(skDevice);
|
FPDF_RenderPage_Retail(pContext, page, 0, 0, size_x, size_y, 0, 0, true,
|
nullptr);
|
pPage->SetRenderContext(nullptr);
|
return recorder;
|
}
|
#endif
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDF_ClosePage(FPDF_PAGE page) {
|
UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
|
if (!page)
|
return;
|
#ifdef PDF_ENABLE_XFA
|
// Take it back across the API and throw it away.
|
RetainPtr<CPDFXFA_Page>().Unleak(pPage);
|
#else // PDF_ENABLE_XFA
|
CPDFSDK_PageView* pPageView =
|
static_cast<CPDFSDK_PageView*>(pPage->GetView());
|
if (pPageView) {
|
// We're already destroying the pageview, so bail early.
|
if (pPageView->IsBeingDestroyed())
|
return;
|
|
if (pPageView->IsLocked()) {
|
pPageView->TakePageOwnership();
|
return;
|
}
|
|
bool owned = pPageView->OwnsPage();
|
// This will delete the |pPageView| object. We must cleanup the PageView
|
// first because it will attempt to reset the View on the |pPage| during
|
// destruction.
|
pPageView->GetFormFillEnv()->RemovePageView(pPage);
|
// If the page was owned then the pageview will have deleted the page.
|
if (owned)
|
return;
|
}
|
delete pPage;
|
#endif // PDF_ENABLE_XFA
|
}
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDF_CloseDocument(FPDF_DOCUMENT document) {
|
delete UnderlyingFromFPDFDocument(document);
|
}
|
|
FPDF_EXPORT unsigned long FPDF_CALLCONV FPDF_GetLastError() {
|
return GetLastError();
|
}
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDF_DeviceToPage(FPDF_PAGE page,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
int device_x,
|
int device_y,
|
double* page_x,
|
double* page_y) {
|
if (!page || !page_x || !page_y)
|
return;
|
UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
|
#ifdef PDF_ENABLE_XFA
|
pPage->DeviceToPage(start_x, start_y, size_x, size_y, rotate, device_x,
|
device_y, page_x, page_y);
|
#else // PDF_ENABLE_XFA
|
CFX_Matrix page2device =
|
pPage->GetDisplayMatrix(start_x, start_y, size_x, size_y, rotate);
|
|
CFX_PointF pos = page2device.GetInverse().Transform(
|
CFX_PointF(static_cast<float>(device_x), static_cast<float>(device_y)));
|
|
*page_x = pos.x;
|
*page_y = pos.y;
|
#endif // PDF_ENABLE_XFA
|
}
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDF_PageToDevice(FPDF_PAGE page,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
double page_x,
|
double page_y,
|
int* device_x,
|
int* device_y) {
|
if (!device_x || !device_y)
|
return;
|
UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
|
if (!pPage)
|
return;
|
#ifdef PDF_ENABLE_XFA
|
pPage->PageToDevice(start_x, start_y, size_x, size_y, rotate, page_x, page_y,
|
device_x, device_y);
|
#else // PDF_ENABLE_XFA
|
CFX_Matrix page2device =
|
pPage->GetDisplayMatrix(start_x, start_y, size_x, size_y, rotate);
|
CFX_PointF pos = page2device.Transform(
|
CFX_PointF(static_cast<float>(page_x), static_cast<float>(page_y)));
|
|
*device_x = FXSYS_round(pos.x);
|
*device_y = FXSYS_round(pos.y);
|
#endif // PDF_ENABLE_XFA
|
}
|
|
FPDF_EXPORT FPDF_BITMAP FPDF_CALLCONV FPDFBitmap_Create(int width,
|
int height,
|
int alpha) {
|
auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
|
if (!pBitmap->Create(width, height, alpha ? FXDIB_Argb : FXDIB_Rgb32))
|
return nullptr;
|
|
return pBitmap.Leak();
|
}
|
|
FPDF_EXPORT FPDF_BITMAP FPDF_CALLCONV FPDFBitmap_CreateEx(int width,
|
int height,
|
int format,
|
void* first_scan,
|
int stride) {
|
FXDIB_Format fx_format;
|
switch (format) {
|
case FPDFBitmap_Gray:
|
fx_format = FXDIB_8bppRgb;
|
break;
|
case FPDFBitmap_BGR:
|
fx_format = FXDIB_Rgb;
|
break;
|
case FPDFBitmap_BGRx:
|
fx_format = FXDIB_Rgb32;
|
break;
|
case FPDFBitmap_BGRA:
|
fx_format = FXDIB_Argb;
|
break;
|
default:
|
return nullptr;
|
}
|
auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
|
pBitmap->Create(width, height, fx_format, static_cast<uint8_t*>(first_scan),
|
stride);
|
return pBitmap.Leak();
|
}
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDFBitmap_GetFormat(FPDF_BITMAP bitmap) {
|
if (!bitmap)
|
return FPDFBitmap_Unknown;
|
|
FXDIB_Format format = CFXBitmapFromFPDFBitmap(bitmap)->GetFormat();
|
switch (format) {
|
case FXDIB_8bppRgb:
|
case FXDIB_8bppMask:
|
return FPDFBitmap_Gray;
|
case FXDIB_Rgb:
|
return FPDFBitmap_BGR;
|
case FXDIB_Rgb32:
|
return FPDFBitmap_BGRx;
|
case FXDIB_Argb:
|
return FPDFBitmap_BGRA;
|
default:
|
return FPDFBitmap_Unknown;
|
}
|
}
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDFBitmap_FillRect(FPDF_BITMAP bitmap,
|
int left,
|
int top,
|
int width,
|
int height,
|
FPDF_DWORD color) {
|
if (!bitmap)
|
return;
|
|
CFX_DefaultRenderDevice device;
|
RetainPtr<CFX_DIBitmap> pBitmap(CFXBitmapFromFPDFBitmap(bitmap));
|
device.Attach(pBitmap, false, nullptr, false);
|
if (!pBitmap->HasAlpha())
|
color |= 0xFF000000;
|
FX_RECT rect(left, top, left + width, top + height);
|
device.FillRect(&rect, color);
|
}
|
|
FPDF_EXPORT void* FPDF_CALLCONV FPDFBitmap_GetBuffer(FPDF_BITMAP bitmap) {
|
return bitmap ? CFXBitmapFromFPDFBitmap(bitmap)->GetBuffer() : nullptr;
|
}
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDFBitmap_GetWidth(FPDF_BITMAP bitmap) {
|
return bitmap ? CFXBitmapFromFPDFBitmap(bitmap)->GetWidth() : 0;
|
}
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDFBitmap_GetHeight(FPDF_BITMAP bitmap) {
|
return bitmap ? CFXBitmapFromFPDFBitmap(bitmap)->GetHeight() : 0;
|
}
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDFBitmap_GetStride(FPDF_BITMAP bitmap) {
|
return bitmap ? CFXBitmapFromFPDFBitmap(bitmap)->GetPitch() : 0;
|
}
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDFBitmap_Destroy(FPDF_BITMAP bitmap) {
|
RetainPtr<CFX_DIBitmap> destroyer;
|
destroyer.Unleak(CFXBitmapFromFPDFBitmap(bitmap));
|
}
|
|
void FPDF_RenderPage_Retail(CPDF_PageRenderContext* pContext,
|
FPDF_PAGE page,
|
int start_x,
|
int start_y,
|
int size_x,
|
int size_y,
|
int rotate,
|
int flags,
|
bool bNeedToRestore,
|
IFSDK_PAUSE_Adapter* pause) {
|
CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
|
if (!pPage)
|
return;
|
|
RenderPageImpl(pContext, pPage, pPage->GetDisplayMatrix(
|
start_x, start_y, size_x, size_y, rotate),
|
FX_RECT(start_x, start_y, start_x + size_x, start_y + size_y),
|
flags, bNeedToRestore, pause);
|
}
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDF_GetPageSizeByIndex(FPDF_DOCUMENT document,
|
int page_index,
|
double* width,
|
double* height) {
|
UnderlyingDocumentType* pDoc = UnderlyingFromFPDFDocument(document);
|
if (!pDoc)
|
return false;
|
|
#ifdef PDF_ENABLE_XFA
|
int count = pDoc->GetPageCount();
|
if (page_index < 0 || page_index >= count)
|
return false;
|
RetainPtr<CPDFXFA_Page> pPage = pDoc->GetXFAPage(page_index);
|
if (!pPage)
|
return false;
|
*width = pPage->GetPageWidth();
|
*height = pPage->GetPageHeight();
|
#else // PDF_ENABLE_XFA
|
CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
|
if (!pDict)
|
return false;
|
|
CPDF_Page page(pDoc, pDict, true);
|
*width = page.GetPageWidth();
|
*height = page.GetPageHeight();
|
#endif // PDF_ENABLE_XFA
|
|
return true;
|
}
|
|
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
|
FPDF_VIEWERREF_GetPrintScaling(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return true;
|
CPDF_ViewerPreferences viewRef(pDoc);
|
return viewRef.PrintScaling();
|
}
|
|
FPDF_EXPORT int FPDF_CALLCONV
|
FPDF_VIEWERREF_GetNumCopies(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return 1;
|
CPDF_ViewerPreferences viewRef(pDoc);
|
return viewRef.NumCopies();
|
}
|
|
FPDF_EXPORT FPDF_PAGERANGE FPDF_CALLCONV
|
FPDF_VIEWERREF_GetPrintPageRange(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return nullptr;
|
CPDF_ViewerPreferences viewRef(pDoc);
|
return viewRef.PrintPageRange();
|
}
|
|
FPDF_EXPORT FPDF_DUPLEXTYPE FPDF_CALLCONV
|
FPDF_VIEWERREF_GetDuplex(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return DuplexUndefined;
|
CPDF_ViewerPreferences viewRef(pDoc);
|
ByteString duplex = viewRef.Duplex();
|
if ("Simplex" == duplex)
|
return Simplex;
|
if ("DuplexFlipShortEdge" == duplex)
|
return DuplexFlipShortEdge;
|
if ("DuplexFlipLongEdge" == duplex)
|
return DuplexFlipLongEdge;
|
return DuplexUndefined;
|
}
|
|
FPDF_EXPORT unsigned long FPDF_CALLCONV
|
FPDF_VIEWERREF_GetName(FPDF_DOCUMENT document,
|
FPDF_BYTESTRING key,
|
char* buffer,
|
unsigned long length) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return 0;
|
|
CPDF_ViewerPreferences viewRef(pDoc);
|
ByteString bsVal;
|
if (!viewRef.GenericName(key, &bsVal))
|
return 0;
|
|
unsigned long dwStringLen = bsVal.GetLength() + 1;
|
if (buffer && length >= dwStringLen)
|
memcpy(buffer, bsVal.c_str(), dwStringLen);
|
return dwStringLen;
|
}
|
|
FPDF_EXPORT FPDF_DWORD FPDF_CALLCONV
|
FPDF_CountNamedDests(FPDF_DOCUMENT document) {
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return 0;
|
|
const CPDF_Dictionary* pRoot = pDoc->GetRoot();
|
if (!pRoot)
|
return 0;
|
|
CPDF_NameTree nameTree(pDoc, "Dests");
|
pdfium::base::CheckedNumeric<FPDF_DWORD> count = nameTree.GetCount();
|
CPDF_Dictionary* pDest = pRoot->GetDictFor("Dests");
|
if (pDest)
|
count += pDest->GetCount();
|
|
if (!count.IsValid())
|
return 0;
|
|
return count.ValueOrDie();
|
}
|
|
FPDF_EXPORT FPDF_DEST FPDF_CALLCONV
|
FPDF_GetNamedDestByName(FPDF_DOCUMENT document, FPDF_BYTESTRING name) {
|
if (!name || name[0] == 0)
|
return nullptr;
|
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return nullptr;
|
|
CPDF_NameTree name_tree(pDoc, "Dests");
|
return name_tree.LookupNamedDest(pDoc, PDF_DecodeText(ByteString(name)));
|
}
|
|
#ifdef PDF_ENABLE_XFA
|
FPDF_EXPORT FPDF_RESULT FPDF_CALLCONV FPDF_BStr_Init(FPDF_BSTR* str) {
|
if (!str)
|
return -1;
|
|
memset(str, 0, sizeof(FPDF_BSTR));
|
return 0;
|
}
|
|
FPDF_EXPORT FPDF_RESULT FPDF_CALLCONV FPDF_BStr_Set(FPDF_BSTR* str,
|
FPDF_LPCSTR bstr,
|
int length) {
|
if (!str || !bstr || !length)
|
return -1;
|
|
if (length == -1)
|
length = strlen(bstr);
|
|
if (length == 0) {
|
FPDF_BStr_Clear(str);
|
return 0;
|
}
|
|
if (str->str && str->len < length)
|
str->str = FX_Realloc(char, str->str, length + 1);
|
else if (!str->str)
|
str->str = FX_Alloc(char, length + 1);
|
|
str->str[length] = 0;
|
memcpy(str->str, bstr, length);
|
str->len = length;
|
|
return 0;
|
}
|
|
FPDF_EXPORT FPDF_RESULT FPDF_CALLCONV FPDF_BStr_Clear(FPDF_BSTR* str) {
|
if (!str)
|
return -1;
|
|
if (str->str) {
|
FX_Free(str->str);
|
str->str = nullptr;
|
}
|
str->len = 0;
|
return 0;
|
}
|
#endif // PDF_ENABLE_XFA
|
|
FPDF_EXPORT FPDF_DEST FPDF_CALLCONV FPDF_GetNamedDest(FPDF_DOCUMENT document,
|
int index,
|
void* buffer,
|
long* buflen) {
|
if (!buffer)
|
*buflen = 0;
|
|
if (index < 0)
|
return nullptr;
|
|
CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
if (!pDoc)
|
return nullptr;
|
|
const CPDF_Dictionary* pRoot = pDoc->GetRoot();
|
if (!pRoot)
|
return nullptr;
|
|
CPDF_Object* pDestObj = nullptr;
|
WideString wsName;
|
CPDF_NameTree nameTree(pDoc, "Dests");
|
int count = nameTree.GetCount();
|
if (index >= count) {
|
CPDF_Dictionary* pDest = pRoot->GetDictFor("Dests");
|
if (!pDest)
|
return nullptr;
|
|
pdfium::base::CheckedNumeric<int> checked_count = count;
|
checked_count += pDest->GetCount();
|
if (!checked_count.IsValid() || index >= checked_count.ValueOrDie())
|
return nullptr;
|
|
index -= count;
|
int i = 0;
|
ByteString bsName;
|
for (const auto& it : *pDest) {
|
bsName = it.first;
|
pDestObj = it.second.get();
|
if (!pDestObj)
|
continue;
|
if (i == index)
|
break;
|
i++;
|
}
|
wsName = PDF_DecodeText(bsName);
|
} else {
|
pDestObj = nameTree.LookupValueAndName(index, &wsName);
|
}
|
if (!pDestObj)
|
return nullptr;
|
if (CPDF_Dictionary* pDict = pDestObj->AsDictionary()) {
|
pDestObj = pDict->GetArrayFor("D");
|
if (!pDestObj)
|
return nullptr;
|
}
|
if (!pDestObj->IsArray())
|
return nullptr;
|
|
ByteString utf16Name = wsName.UTF16LE_Encode();
|
int len = utf16Name.GetLength();
|
if (!buffer) {
|
*buflen = len;
|
} else if (len <= *buflen) {
|
memcpy(buffer, utf16Name.c_str(), len);
|
*buflen = len;
|
} else {
|
*buflen = -1;
|
}
|
return (FPDF_DEST)pDestObj;
|
}
|
