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1152 lines
38 KiB
1152 lines
38 KiB
// 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 "build/build_config.h"
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#include "core/fpdfapi/page/cpdf_docpagedata.h"
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#include "core/fpdfapi/page/cpdf_occontext.h"
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#include "core/fpdfapi/page/cpdf_page.h"
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#include "core/fpdfapi/page/cpdf_pagemodule.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/cpdf_name.h"
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#include "core/fpdfapi/parser/cpdf_parser.h"
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#include "core/fpdfapi/parser/fpdf_parser_decode.h"
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#include "core/fpdfapi/render/cpdf_docrenderdata.h"
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#include "core/fpdfapi/render/cpdf_pagerendercache.h"
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#include "core/fpdfapi/render/cpdf_pagerendercontext.h"
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#include "core/fpdfapi/render/cpdf_rendercontext.h"
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#include "core/fpdfapi/render/cpdf_renderoptions.h"
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#include "core/fpdfdoc/cpdf_nametree.h"
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#include "core/fpdfdoc/cpdf_viewerpreferences.h"
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#include "core/fxcrt/cfx_readonlymemorystream.h"
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#include "core/fxcrt/fx_stream.h"
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#include "core/fxcrt/fx_system.h"
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#include "core/fxcrt/unowned_ptr.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 "core/fxge/cfx_renderdevice.h"
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#include "fpdfsdk/cpdfsdk_customaccess.h"
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#include "fpdfsdk/cpdfsdk_formfillenvironment.h"
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#include "fpdfsdk/cpdfsdk_helpers.h"
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#include "fpdfsdk/cpdfsdk_pageview.h"
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#include "fpdfsdk/cpdfsdk_renderpage.h"
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#include "fxjs/ijs_runtime.h"
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#include "public/fpdf_formfill.h"
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#include "third_party/base/ptr_util.h"
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#include "third_party/base/span.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 "fxbarcode/BC_Library.h"
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#endif // PDF_ENABLE_XFA
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#if defined(OS_WIN)
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#include "core/fpdfapi/render/cpdf_progressiverenderer.h"
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#include "core/fpdfapi/render/cpdf_windowsrenderdevice.h"
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#include "public/fpdf_edit.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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static_assert(WindowsPrintMode::kModePostScript2PassThrough ==
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FPDF_PRINTMODE_POSTSCRIPT2_PASSTHROUGH,
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"WindowsPrintMode::kModePostScript2PassThrough value mismatch");
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static_assert(WindowsPrintMode::kModePostScript3PassThrough ==
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FPDF_PRINTMODE_POSTSCRIPT3_PASSTHROUGH,
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"WindowsPrintMode::kModePostScript3PassThrough value mismatch");
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#endif // defined(OS_WIN)
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namespace {
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bool g_bLibraryInitialized = false;
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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 pDocument = pdfium::MakeUnique<CPDF_Document>(
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pdfium::MakeUnique<CPDF_DocRenderData>(),
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pdfium::MakeUnique<CPDF_DocPageData>());
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CPDF_Parser::Error error = pDocument->LoadDoc(pFileAccess, password);
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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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ReportUnsupportedFeatures(pDocument.get());
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return FPDFDocumentFromCPDFDocument(pDocument.release());
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}
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} // namespace
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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* config) {
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if (g_bLibraryInitialized)
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return;
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FXMEM_InitializePartitionAlloc();
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CFX_GEModule::Create(config ? config->m_pUserFontPaths : nullptr);
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CPDF_PageModule::Create();
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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 (config && config->version >= 2)
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IJS_Runtime::Initialize(config->m_v8EmbedderSlot, config->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_PageModule::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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FPDF_EXPORT void FPDF_CALLCONV FPDF_SetSandBoxPolicy(FPDF_DWORD policy,
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FPDF_BOOL enable) {
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return SetPDFSandboxPolicy(policy, enable);
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}
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#if defined(OS_WIN)
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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 FPDF_SetPrintMode(int mode) {
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if (mode < FPDF_PRINTMODE_EMF ||
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mode > FPDF_PRINTMODE_POSTSCRIPT3_PASSTHROUGH) {
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return FALSE;
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}
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g_pdfium_print_mode = static_cast<WindowsPrintMode>(mode);
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return TRUE;
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}
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#endif // defined(OS_WIN)
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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.
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return LoadDocumentImpl(IFX_SeekableReadStream::CreateFromFilename(file_path),
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password);
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}
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FPDF_EXPORT int FPDF_CALLCONV FPDF_GetFormType(FPDF_DOCUMENT document) {
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const CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
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if (!pDoc)
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return FORMTYPE_NONE;
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const CPDF_Dictionary* pRoot = pDoc->GetRoot();
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if (!pRoot)
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return FORMTYPE_NONE;
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const CPDF_Dictionary* pAcroForm = pRoot->GetDictFor("AcroForm");
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if (!pAcroForm)
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return FORMTYPE_NONE;
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const CPDF_Object* pXFA = pAcroForm->GetObjectFor("XFA");
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if (!pXFA)
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return FORMTYPE_ACRO_FORM;
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bool bNeedsRendering = pRoot->GetBooleanFor("NeedsRendering", false);
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return bNeedsRendering ? FORMTYPE_XFA_FULL : FORMTYPE_XFA_FOREGROUND;
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}
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FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDF_LoadXFA(FPDF_DOCUMENT document) {
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#ifdef PDF_ENABLE_XFA
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auto* pDoc = CPDFDocumentFromFPDFDocument(document);
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if (!pDoc)
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return false;
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auto* pContext = static_cast<CPDFXFA_Context*>(pDoc->GetExtension());
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if (pContext)
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return pContext->LoadXFADoc();
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#endif // PDF_ENABLE_XFA
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return false;
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}
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FPDF_EXPORT FPDF_DOCUMENT FPDF_CALLCONV
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FPDF_LoadMemDocument(const void* data_buf, int size, FPDF_BYTESTRING password) {
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return LoadDocumentImpl(
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pdfium::MakeRetain<CFX_ReadOnlyMemoryStream>(
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pdfium::make_span(static_cast<const uint8_t*>(data_buf), size)),
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password);
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}
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FPDF_EXPORT FPDF_DOCUMENT FPDF_CALLCONV
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FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess,
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FPDF_BYTESTRING password) {
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if (!pFileAccess)
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return nullptr;
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return LoadDocumentImpl(pdfium::MakeRetain<CPDFSDK_CustomAccess>(pFileAccess),
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password);
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}
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FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDF_GetFileVersion(FPDF_DOCUMENT doc,
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int* fileVersion) {
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if (!fileVersion)
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return false;
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*fileVersion = 0;
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CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(doc);
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if (!pDoc)
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return false;
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const CPDF_Parser* pParser = pDoc->GetParser();
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if (!pParser)
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return false;
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*fileVersion = pParser->GetFileVersion();
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return true;
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}
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FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
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FPDF_DocumentHasValidCrossReferenceTable(FPDF_DOCUMENT document) {
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CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
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return pDoc && pDoc->has_valid_cross_reference_table();
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}
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FPDF_EXPORT unsigned long FPDF_CALLCONV
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FPDF_GetDocPermissions(FPDF_DOCUMENT document) {
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CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
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return pDoc ? pDoc->GetUserPermissions() : 0;
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}
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FPDF_EXPORT int FPDF_CALLCONV
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FPDF_GetSecurityHandlerRevision(FPDF_DOCUMENT document) {
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CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
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if (!pDoc || !pDoc->GetParser())
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return -1;
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const CPDF_Dictionary* pDict = pDoc->GetParser()->GetEncryptDict();
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return pDict ? pDict->GetIntegerFor("R") : -1;
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}
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FPDF_EXPORT int FPDF_CALLCONV FPDF_GetPageCount(FPDF_DOCUMENT document) {
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auto* pDoc = CPDFDocumentFromFPDFDocument(document);
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if (!pDoc)
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return 0;
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auto* pExtension = pDoc->GetExtension();
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return pExtension ? pExtension->GetPageCount() : pDoc->GetPageCount();
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}
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FPDF_EXPORT FPDF_PAGE FPDF_CALLCONV FPDF_LoadPage(FPDF_DOCUMENT document,
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int page_index) {
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auto* pDoc = CPDFDocumentFromFPDFDocument(document);
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if (!pDoc)
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return nullptr;
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if (page_index < 0 || page_index >= FPDF_GetPageCount(document))
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return nullptr;
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#ifdef PDF_ENABLE_XFA
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auto* pContext = static_cast<CPDFXFA_Context*>(pDoc->GetExtension());
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if (pContext)
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return FPDFPageFromIPDFPage(pContext->GetXFAPage(page_index).Leak());
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#endif // PDF_ENABLE_XFA
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CPDF_Dictionary* pDict = pDoc->GetPageDictionary(page_index);
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if (!pDict)
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return nullptr;
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auto pPage = pdfium::MakeRetain<CPDF_Page>(pDoc, pDict);
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pPage->SetRenderCache(pdfium::MakeUnique<CPDF_PageRenderCache>(pPage.Get()));
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pPage->ParseContent();
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return FPDFPageFromIPDFPage(pPage.Leak());
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}
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FPDF_EXPORT float FPDF_CALLCONV FPDF_GetPageWidthF(FPDF_PAGE page) {
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IPDF_Page* pPage = IPDFPageFromFPDFPage(page);
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return pPage ? pPage->GetPageWidth() : 0.0f;
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}
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FPDF_EXPORT double FPDF_CALLCONV FPDF_GetPageWidth(FPDF_PAGE page) {
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return FPDF_GetPageWidthF(page);
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}
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FPDF_EXPORT float FPDF_CALLCONV FPDF_GetPageHeightF(FPDF_PAGE page) {
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IPDF_Page* pPage = IPDFPageFromFPDFPage(page);
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return pPage ? pPage->GetPageHeight() : 0.0f;
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}
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FPDF_EXPORT double FPDF_CALLCONV FPDF_GetPageHeight(FPDF_PAGE page) {
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return FPDF_GetPageHeightF(page);
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}
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FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDF_GetPageBoundingBox(FPDF_PAGE page,
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FS_RECTF* rect) {
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if (!rect)
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return false;
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CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
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if (!pPage)
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return false;
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*rect = FSRectFFromCFXFloatRect(pPage->GetBBox());
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return true;
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}
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#if defined(OS_WIN)
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namespace {
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const double kEpsilonSize = 0.01f;
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void GetScaling(CPDF_Page* pPage,
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int size_x,
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int size_y,
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int rotate,
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double* scale_x,
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double* scale_y) {
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ASSERT(pPage);
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ASSERT(scale_x);
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ASSERT(scale_y);
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double page_width = pPage->GetPageWidth();
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double page_height = pPage->GetPageHeight();
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if (page_width < kEpsilonSize || page_height < kEpsilonSize)
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return;
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if (rotate % 2 == 0) {
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*scale_x = size_x / page_width;
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*scale_y = size_y / page_height;
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} else {
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*scale_x = size_y / page_width;
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*scale_y = size_x / page_height;
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}
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}
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FX_RECT GetMaskDimensionsAndOffsets(CPDF_Page* pPage,
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int start_x,
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int start_y,
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int size_x,
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int size_y,
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int rotate,
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const CFX_FloatRect& mask_box) {
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double scale_x = 0.0f;
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double scale_y = 0.0f;
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GetScaling(pPage, size_x, size_y, rotate, &scale_x, &scale_y);
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if (scale_x < kEpsilonSize || scale_y < kEpsilonSize)
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return FX_RECT();
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// Compute sizes in page points. Round down to catch the entire bitmap.
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int start_x_bm = static_cast<int>(mask_box.left * scale_x);
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int start_y_bm = static_cast<int>(mask_box.bottom * scale_y);
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int size_x_bm = static_cast<int>(mask_box.right * scale_x + 1.0f) -
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static_cast<int>(mask_box.left * scale_x);
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int size_y_bm = static_cast<int>(mask_box.top * scale_y + 1.0f) -
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static_cast<int>(mask_box.bottom * scale_y);
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// Get page rotation
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int page_rotation = pPage->GetPageRotation();
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// Compute offsets
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int offset_x = 0;
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int offset_y = 0;
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if (size_x > size_y)
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std::swap(size_x_bm, size_y_bm);
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switch ((rotate + page_rotation) % 4) {
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case 0:
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offset_x = start_x_bm + start_x;
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offset_y = start_y + size_y - size_y_bm - start_y_bm;
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break;
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case 1:
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offset_x = start_y_bm + start_x;
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offset_y = start_x_bm + start_y;
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break;
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case 2:
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offset_x = start_x + size_x - size_x_bm - start_x_bm;
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offset_y = start_y_bm + start_y;
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break;
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case 3:
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offset_x = start_x + size_x - size_x_bm - start_y_bm;
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offset_y = start_y + size_y - size_y_bm - start_x_bm;
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break;
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}
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return FX_RECT(offset_x, offset_y, offset_x + size_x_bm,
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offset_y + size_y_bm);
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}
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// Get a bitmap of just the mask section defined by |mask_box| from a full page
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// bitmap |pBitmap|.
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RetainPtr<CFX_DIBitmap> GetMaskBitmap(CPDF_Page* pPage,
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int start_x,
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int start_y,
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int size_x,
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int size_y,
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int rotate,
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const RetainPtr<CFX_DIBitmap>& pSrc,
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const CFX_FloatRect& mask_box,
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FX_RECT* bitmap_area) {
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ASSERT(bitmap_area);
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*bitmap_area = GetMaskDimensionsAndOffsets(pPage, start_x, start_y, size_x,
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size_y, rotate, mask_box);
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if (bitmap_area->IsEmpty())
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return nullptr;
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// Create a new bitmap to transfer part of the page bitmap to.
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RetainPtr<CFX_DIBitmap> pDst = pdfium::MakeRetain<CFX_DIBitmap>();
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if (!pDst->Create(bitmap_area->Width(), bitmap_area->Height(), FXDIB_Argb))
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return nullptr;
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pDst->Clear(0x00ffffff);
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pDst->TransferBitmap(0, 0, bitmap_area->Width(), bitmap_area->Height(), pSrc,
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bitmap_area->left, bitmap_area->top);
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return pDst;
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}
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void RenderBitmap(CFX_RenderDevice* device,
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const RetainPtr<CFX_DIBitmap>& pSrc,
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const FX_RECT& mask_area) {
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int size_x_bm = mask_area.Width();
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int size_y_bm = mask_area.Height();
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if (size_x_bm == 0 || size_y_bm == 0)
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return;
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// Create a new bitmap from the old one
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RetainPtr<CFX_DIBitmap> pDst = pdfium::MakeRetain<CFX_DIBitmap>();
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if (!pDst->Create(size_x_bm, size_y_bm, FXDIB_Rgb32))
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return;
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pDst->Clear(0xffffffff);
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pDst->CompositeBitmap(0, 0, size_x_bm, size_y_bm, pSrc, 0, 0,
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BlendMode::kNormal, nullptr, false);
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if (device->GetDeviceType() == DeviceType::kPrinter) {
|
|
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;
|
|
|
|
auto pOwnedContext = pdfium::MakeUnique<CPDF_PageRenderContext>();
|
|
CPDF_PageRenderContext* pContext = pOwnedContext.get();
|
|
CPDF_Page::RenderContextClearer clearer(pPage);
|
|
pPage->SetRenderContext(std::move(pOwnedContext));
|
|
|
|
// 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) {
|
|
pContext->m_pDevice = pdfium::MakeUnique<CPDF_WindowsRenderDevice>(dc);
|
|
CPDFSDK_RenderPageWithContext(pContext, pPage, start_x, start_y, size_x,
|
|
size_y, rotate, flags,
|
|
/*need_to_restore=*/true, /*pause=*/nullptr);
|
|
return;
|
|
}
|
|
|
|
RetainPtr<CFX_DIBitmap> pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
|
|
// Create will probably work fine even if it fails here: we will just attach
|
|
// a zero-sized bitmap to |pDevice|.
|
|
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>();
|
|
pContext->m_pOptions->GetOptions().bBreakForMasks = true;
|
|
}
|
|
|
|
CPDFSDK_RenderPageWithContext(pContext, pPage, start_x, start_y, size_x,
|
|
size_y, rotate, flags, /*need_to_restore=*/true,
|
|
/*pause=*/nullptr);
|
|
|
|
if (!bHasMask) {
|
|
CPDF_WindowsRenderDevice WinDC(dc);
|
|
bool bitsStretched = false;
|
|
if (WinDC.GetDeviceType() == DeviceType::kPrinter) {
|
|
auto pDst = pdfium::MakeRetain<CFX_DIBitmap>();
|
|
if (pDst->Create(size_x, size_y, FXDIB_Rgb32)) {
|
|
memset(pDst->GetBuffer(), -1, pBitmap->GetPitch() * size_y);
|
|
pDst->CompositeBitmap(0, 0, size_x, size_y, pBitmap, 0, 0,
|
|
BlendMode::kNormal, nullptr, false);
|
|
WinDC.StretchDIBits(pDst, 0, 0, size_x, size_y);
|
|
bitsStretched = true;
|
|
}
|
|
}
|
|
if (!bitsStretched)
|
|
WinDC.SetDIBits(pBitmap, 0, 0);
|
|
return;
|
|
}
|
|
|
|
// 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);
|
|
}
|
|
|
|
// Begin rendering to the printer. Add flag to indicate the renderer should
|
|
// pause after each image mask.
|
|
pOwnedContext = pdfium::MakeUnique<CPDF_PageRenderContext>();
|
|
pContext = pOwnedContext.get();
|
|
pPage->SetRenderContext(std::move(pOwnedContext));
|
|
pContext->m_pDevice = pdfium::MakeUnique<CPDF_WindowsRenderDevice>(dc);
|
|
pContext->m_pOptions = pdfium::MakeUnique<CPDF_RenderOptions>();
|
|
pContext->m_pOptions->GetOptions().bBreakForMasks = true;
|
|
|
|
CPDFSDK_RenderPageWithContext(pContext, pPage, start_x, start_y, size_x,
|
|
size_y, rotate, flags, /*need_to_restore=*/true,
|
|
/*pause=*/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);
|
|
}
|
|
}
|
|
#endif // defined(OS_WIN)
|
|
|
|
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;
|
|
|
|
auto pOwnedContext = pdfium::MakeUnique<CPDF_PageRenderContext>();
|
|
CPDF_PageRenderContext* pContext = pOwnedContext.get();
|
|
CPDF_Page::RenderContextClearer clearer(pPage);
|
|
pPage->SetRenderContext(std::move(pOwnedContext));
|
|
|
|
auto pOwnedDevice = pdfium::MakeUnique<CFX_DefaultRenderDevice>();
|
|
CFX_DefaultRenderDevice* pDevice = pOwnedDevice.get();
|
|
pContext->m_pDevice = std::move(pOwnedDevice);
|
|
|
|
RetainPtr<CFX_DIBitmap> pBitmap(CFXDIBitmapFromFPDFBitmap(bitmap));
|
|
pDevice->Attach(pBitmap, !!(flags & FPDF_REVERSE_BYTE_ORDER), nullptr, false);
|
|
CPDFSDK_RenderPageWithContext(pContext, pPage, start_x, start_y, size_x,
|
|
size_y, rotate, flags, /*need_to_restore=*/true,
|
|
/*pause=*/nullptr);
|
|
|
|
#ifdef _SKIA_SUPPORT_PATHS_
|
|
pDevice->Flush(true);
|
|
pBitmap->UnPreMultiply();
|
|
#endif
|
|
}
|
|
|
|
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;
|
|
|
|
auto pOwnedContext = pdfium::MakeUnique<CPDF_PageRenderContext>();
|
|
CPDF_PageRenderContext* pContext = pOwnedContext.get();
|
|
CPDF_Page::RenderContextClearer clearer(pPage);
|
|
pPage->SetRenderContext(std::move(pOwnedContext));
|
|
|
|
auto pOwnedDevice = pdfium::MakeUnique<CFX_DefaultRenderDevice>();
|
|
CFX_DefaultRenderDevice* pDevice = pOwnedDevice.get();
|
|
pContext->m_pDevice = std::move(pOwnedDevice);
|
|
|
|
RetainPtr<CFX_DIBitmap> pBitmap(CFXDIBitmapFromFPDFBitmap(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();
|
|
|
|
const FX_RECT rect(0, 0, pPage->GetPageWidth(), pPage->GetPageHeight());
|
|
CFX_Matrix transform_matrix = pPage->GetDisplayMatrix(rect, 0);
|
|
if (matrix)
|
|
transform_matrix *= CFXMatrixFromFSMatrix(*matrix);
|
|
CPDFSDK_RenderPage(pContext, pPage, transform_matrix, clip_rect, flags);
|
|
}
|
|
|
|
#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;
|
|
|
|
auto pOwnedContext = pdfium::MakeUnique<CPDF_PageRenderContext>();
|
|
CPDF_PageRenderContext* pContext = pOwnedContext.get();
|
|
CPDF_Page::RenderContextClearer clearer(pPage);
|
|
pPage->SetRenderContext(std::move(pOwnedContext));
|
|
|
|
auto skDevice = pdfium::MakeUnique<CFX_DefaultRenderDevice>();
|
|
FPDF_RECORDER recorder = skDevice->CreateRecorder(size_x, size_y);
|
|
pContext->m_pDevice = std::move(skDevice);
|
|
|
|
CPDFSDK_RenderPageWithContext(pContext, pPage, 0, 0, size_x, size_y, 0, 0,
|
|
/*need_to_restore=*/true, /*pause=*/nullptr);
|
|
return recorder;
|
|
}
|
|
#endif // _SKIA_SUPPORT_
|
|
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDF_ClosePage(FPDF_PAGE page) {
|
|
if (!page)
|
|
return;
|
|
|
|
// Take it back across the API and hold for duration of this function.
|
|
RetainPtr<IPDF_Page> pPage;
|
|
pPage.Unleak(IPDFPageFromFPDFPage(page));
|
|
|
|
if (pPage->AsXFAPage())
|
|
return;
|
|
|
|
CPDFSDK_PageView* pPageView =
|
|
static_cast<CPDFSDK_PageView*>(pPage->AsPDFPage()->GetView());
|
|
if (!pPageView || pPageView->IsBeingDestroyed())
|
|
return;
|
|
|
|
if (pPageView->IsLocked()) {
|
|
pPageView->TakePageOwnership();
|
|
return;
|
|
}
|
|
|
|
// 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.Get());
|
|
}
|
|
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDF_CloseDocument(FPDF_DOCUMENT document) {
|
|
// Take it back across the API and throw it away,
|
|
std::unique_ptr<CPDF_Document>(CPDFDocumentFromFPDFDocument(document));
|
|
}
|
|
|
|
FPDF_EXPORT unsigned long FPDF_CALLCONV FPDF_GetLastError() {
|
|
return FXSYS_GetLastError();
|
|
}
|
|
|
|
FPDF_EXPORT FPDF_BOOL 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 false;
|
|
|
|
IPDF_Page* pPage = IPDFPageFromFPDFPage(page);
|
|
const FX_RECT rect(start_x, start_y, start_x + size_x, start_y + size_y);
|
|
Optional<CFX_PointF> pos =
|
|
pPage->DeviceToPage(rect, rotate, CFX_PointF(device_x, device_y));
|
|
if (!pos)
|
|
return false;
|
|
|
|
*page_x = pos->x;
|
|
*page_y = pos->y;
|
|
return true;
|
|
}
|
|
|
|
FPDF_EXPORT FPDF_BOOL 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 (!page || !device_x || !device_y)
|
|
return false;
|
|
|
|
IPDF_Page* pPage = IPDFPageFromFPDFPage(page);
|
|
const FX_RECT rect(start_x, start_y, start_x + size_x, start_y + size_y);
|
|
CFX_PointF page_point(static_cast<float>(page_x), static_cast<float>(page_y));
|
|
Optional<CFX_PointF> pos = pPage->PageToDevice(rect, rotate, page_point);
|
|
if (!pos)
|
|
return false;
|
|
|
|
*device_x = FXSYS_roundf(pos->x);
|
|
*device_y = FXSYS_roundf(pos->y);
|
|
return true;
|
|
}
|
|
|
|
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 FPDFBitmapFromCFXDIBitmap(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;
|
|
}
|
|
|
|
// Ensure external memory is good at least for the duration of this call.
|
|
UnownedPtr<uint8_t> pChecker(static_cast<uint8_t*>(first_scan));
|
|
auto pBitmap = pdfium::MakeRetain<CFX_DIBitmap>();
|
|
if (!pBitmap->Create(width, height, fx_format, pChecker.Get(), stride))
|
|
return nullptr;
|
|
|
|
return FPDFBitmapFromCFXDIBitmap(pBitmap.Leak());
|
|
}
|
|
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDFBitmap_GetFormat(FPDF_BITMAP bitmap) {
|
|
if (!bitmap)
|
|
return FPDFBitmap_Unknown;
|
|
|
|
FXDIB_Format format = CFXDIBitmapFromFPDFBitmap(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(CFXDIBitmapFromFPDFBitmap(bitmap));
|
|
device.Attach(pBitmap, false, nullptr, false);
|
|
if (!pBitmap->HasAlpha())
|
|
color |= 0xFF000000;
|
|
device.FillRect(FX_RECT(left, top, left + width, top + height), color);
|
|
}
|
|
|
|
FPDF_EXPORT void* FPDF_CALLCONV FPDFBitmap_GetBuffer(FPDF_BITMAP bitmap) {
|
|
return bitmap ? CFXDIBitmapFromFPDFBitmap(bitmap)->GetBuffer() : nullptr;
|
|
}
|
|
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDFBitmap_GetWidth(FPDF_BITMAP bitmap) {
|
|
return bitmap ? CFXDIBitmapFromFPDFBitmap(bitmap)->GetWidth() : 0;
|
|
}
|
|
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDFBitmap_GetHeight(FPDF_BITMAP bitmap) {
|
|
return bitmap ? CFXDIBitmapFromFPDFBitmap(bitmap)->GetHeight() : 0;
|
|
}
|
|
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDFBitmap_GetStride(FPDF_BITMAP bitmap) {
|
|
return bitmap ? CFXDIBitmapFromFPDFBitmap(bitmap)->GetPitch() : 0;
|
|
}
|
|
|
|
FPDF_EXPORT void FPDF_CALLCONV FPDFBitmap_Destroy(FPDF_BITMAP bitmap) {
|
|
RetainPtr<CFX_DIBitmap> destroyer;
|
|
destroyer.Unleak(CFXDIBitmapFromFPDFBitmap(bitmap));
|
|
}
|
|
|
|
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
|
|
FPDF_GetPageSizeByIndexF(FPDF_DOCUMENT document,
|
|
int page_index,
|
|
FS_SIZEF* size) {
|
|
if (!size)
|
|
return false;
|
|
|
|
auto* pDoc = CPDFDocumentFromFPDFDocument(document);
|
|
if (!pDoc)
|
|
return false;
|
|
|
|
#ifdef PDF_ENABLE_XFA
|
|
if (page_index < 0 || page_index >= FPDF_GetPageCount(document))
|
|
return false;
|
|
|
|
auto* pContext = static_cast<CPDFXFA_Context*>(pDoc->GetExtension());
|
|
if (pContext) {
|
|
RetainPtr<CPDFXFA_Page> pPage = pContext->GetXFAPage(page_index);
|
|
if (!pPage)
|
|
return false;
|
|
|
|
size->width = pPage->GetPageWidth();
|
|
size->height = pPage->GetPageHeight();
|
|
return true;
|
|
}
|
|
#endif // PDF_ENABLE_XFA
|
|
|
|
CPDF_Dictionary* pDict = pDoc->GetPageDictionary(page_index);
|
|
if (!pDict)
|
|
return false;
|
|
|
|
auto page = pdfium::MakeRetain<CPDF_Page>(pDoc, pDict);
|
|
page->SetRenderCache(pdfium::MakeUnique<CPDF_PageRenderCache>(page.Get()));
|
|
size->width = page->GetPageWidth();
|
|
size->height = page->GetPageHeight();
|
|
return true;
|
|
}
|
|
|
|
FPDF_EXPORT int FPDF_CALLCONV FPDF_GetPageSizeByIndex(FPDF_DOCUMENT document,
|
|
int page_index,
|
|
double* width,
|
|
double* height) {
|
|
if (!width || !height)
|
|
return false;
|
|
|
|
FS_SIZEF size;
|
|
if (!FPDF_GetPageSizeByIndexF(document, page_index, &size))
|
|
return false;
|
|
|
|
*width = size.width;
|
|
*height = size.height;
|
|
return true;
|
|
}
|
|
|
|
FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
|
|
FPDF_VIEWERREF_GetPrintScaling(FPDF_DOCUMENT document) {
|
|
const 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) {
|
|
const 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) {
|
|
const CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
|
if (!pDoc)
|
|
return nullptr;
|
|
CPDF_ViewerPreferences viewRef(pDoc);
|
|
return FPDFPageRangeFromCPDFArray(viewRef.PrintPageRange());
|
|
}
|
|
|
|
FPDF_EXPORT size_t FPDF_CALLCONV
|
|
FPDF_VIEWERREF_GetPrintPageRangeCount(FPDF_PAGERANGE pagerange) {
|
|
const CPDF_Array* pArray = CPDFArrayFromFPDFPageRange(pagerange);
|
|
return pArray ? pArray->size() : 0;
|
|
}
|
|
|
|
FPDF_EXPORT int FPDF_CALLCONV
|
|
FPDF_VIEWERREF_GetPrintPageRangeElement(FPDF_PAGERANGE pagerange,
|
|
size_t index) {
|
|
const CPDF_Array* pArray = CPDFArrayFromFPDFPageRange(pagerange);
|
|
if (!pArray || index >= pArray->size())
|
|
return -1;
|
|
return pArray->GetIntegerAt(index);
|
|
}
|
|
|
|
FPDF_EXPORT FPDF_DUPLEXTYPE FPDF_CALLCONV
|
|
FPDF_VIEWERREF_GetDuplex(FPDF_DOCUMENT document) {
|
|
const 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) {
|
|
const CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
|
|
if (!pDoc)
|
|
return 0;
|
|
|
|
CPDF_ViewerPreferences viewRef(pDoc);
|
|
Optional<ByteString> bsVal = viewRef.GenericName(key);
|
|
if (!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();
|
|
const CPDF_Dictionary* pDest = pRoot->GetDictFor("Dests");
|
|
if (pDest)
|
|
count += pDest->size();
|
|
|
|
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");
|
|
ByteStringView name_view(name);
|
|
return FPDFDestFromCPDFArray(
|
|
name_tree.LookupNamedDest(pDoc, PDF_DecodeText(name_view.raw_span())));
|
|
}
|
|
|
|
#ifdef PDF_ENABLE_V8
|
|
FPDF_EXPORT const char* FPDF_CALLCONV FPDF_GetRecommendedV8Flags() {
|
|
// Reduce exposure since no PDF should contain web assembly.
|
|
// Use interpreted JS only to avoid RWX pages in our address space.
|
|
return "--no-expose-wasm --jitless";
|
|
}
|
|
#endif // PDF_ENABLE_V8
|
|
|
|
#ifdef PDF_ENABLE_XFA
|
|
FPDF_EXPORT FPDF_RESULT FPDF_CALLCONV FPDF_BStr_Init(FPDF_BSTR* bstr) {
|
|
if (!bstr)
|
|
return -1;
|
|
|
|
bstr->str = nullptr;
|
|
bstr->len = 0;
|
|
return 0;
|
|
}
|
|
|
|
FPDF_EXPORT FPDF_RESULT FPDF_CALLCONV FPDF_BStr_Set(FPDF_BSTR* bstr,
|
|
const char* cstr,
|
|
int length) {
|
|
if (!bstr || !cstr)
|
|
return -1;
|
|
|
|
if (length == -1)
|
|
length = strlen(cstr);
|
|
|
|
if (length == 0) {
|
|
FPDF_BStr_Clear(bstr);
|
|
return 0;
|
|
}
|
|
|
|
if (bstr->str && bstr->len < length)
|
|
bstr->str = FX_Realloc(char, bstr->str, length + 1);
|
|
else if (!bstr->str)
|
|
bstr->str = FX_Alloc(char, length + 1);
|
|
|
|
bstr->str[length] = 0;
|
|
memcpy(bstr->str, cstr, length);
|
|
bstr->len = length;
|
|
return 0;
|
|
}
|
|
|
|
FPDF_EXPORT FPDF_RESULT FPDF_CALLCONV FPDF_BStr_Clear(FPDF_BSTR* bstr) {
|
|
if (!bstr)
|
|
return -1;
|
|
|
|
if (bstr->str) {
|
|
FX_Free(bstr->str);
|
|
bstr->str = nullptr;
|
|
}
|
|
bstr->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) {
|
|
const CPDF_Dictionary* pDest = pRoot->GetDictFor("Dests");
|
|
if (!pDest)
|
|
return nullptr;
|
|
|
|
pdfium::base::CheckedNumeric<int> checked_count = count;
|
|
checked_count += pDest->size();
|
|
if (!checked_count.IsValid() || index >= checked_count.ValueOrDie())
|
|
return nullptr;
|
|
|
|
index -= count;
|
|
int i = 0;
|
|
ByteStringView bsName;
|
|
CPDF_DictionaryLocker locker(pDest);
|
|
for (const auto& it : locker) {
|
|
bsName = it.first.AsStringView();
|
|
pDestObj = it.second.Get();
|
|
if (!pDestObj)
|
|
continue;
|
|
if (i == index)
|
|
break;
|
|
i++;
|
|
}
|
|
wsName = PDF_DecodeText(bsName.raw_span());
|
|
} 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.ToUTF16LE();
|
|
int len = utf16Name.GetLength();
|
|
if (!buffer) {
|
|
*buflen = len;
|
|
} else if (len <= *buflen) {
|
|
memcpy(buffer, utf16Name.c_str(), len);
|
|
*buflen = len;
|
|
} else {
|
|
*buflen = -1;
|
|
}
|
|
return FPDFDestFromCPDFArray(pDestObj->AsArray());
|
|
}
|