Move fpdfsdk/src up to fpdfsdk/.

fpdfsdk/src/fpdfview.cpp

Index: fpdfsdk/src/fpdfview.cpp
diff --git a/fpdfsdk/src/fpdfview.cpp b/fpdfsdk/src/fpdfview.cpp
deleted file mode 100644
index 1f6d11d3feb3fb8b481f2075a4ac82b1731c94e6..0000000000000000000000000000000000000000
--- a/fpdfsdk/src/fpdfview.cpp
+++ /dev/null
@@ -1,1145 +0,0 @@
-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#include "public/fpdfview.h"
-
-#include <memory>
-
-#include "core/include/fpdfapi/cpdf_array.h"
-#include "core/include/fpdfapi/cpdf_document.h"
-#include "core/include/fxcodec/fx_codec.h"
-#include "core/include/fxcrt/fx_safe_types.h"
-#include "fpdfsdk/include/fsdk_define.h"
-#include "fpdfsdk/include/fsdk_mgr.h"
-#include "fpdfsdk/include/fsdk_rendercontext.h"
-#include "fpdfsdk/include/javascript/IJavaScript.h"
-#include "public/fpdf_ext.h"
-#include "public/fpdf_progressive.h"
-#include "third_party/base/numerics/safe_conversions_impl.h"
-
-#ifdef PDF_ENABLE_XFA
-#include "core/include/fpdfapi/fpdf_module.h"
-#include "fpdfsdk/include/fpdfxfa/fpdfxfa_app.h"
-#include "fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h"
-#include "fpdfsdk/include/fpdfxfa/fpdfxfa_page.h"
-#include "fpdfsdk/include/fpdfxfa/fpdfxfa_util.h"
-#include "public/fpdf_formfill.h"
-#endif  // PDF_ENABLE_XFA
-
-UnderlyingDocumentType* UnderlyingFromFPDFDocument(FPDF_DOCUMENT doc) {
-  return static_cast<UnderlyingDocumentType*>(doc);
-}
-
-FPDF_DOCUMENT FPDFDocumentFromUnderlying(UnderlyingDocumentType* doc) {
-  return static_cast<FPDF_DOCUMENT>(doc);
-}
-
-UnderlyingPageType* UnderlyingFromFPDFPage(FPDF_PAGE page) {
-  return static_cast<UnderlyingPageType*>(page);
-}
-
-CPDF_Document* CPDFDocumentFromFPDFDocument(FPDF_DOCUMENT doc) {
-#ifdef PDF_ENABLE_XFA
-  return doc ? UnderlyingFromFPDFDocument(doc)->GetPDFDoc() : nullptr;
-#else   // PDF_ENABLE_XFA
-  return UnderlyingFromFPDFDocument(doc);
-#endif  // PDF_ENABLE_XFA
-}
-
-FPDF_DOCUMENT FPDFDocumentFromCPDFDocument(CPDF_Document* doc) {
-#ifdef PDF_ENABLE_XFA
-  return doc ? FPDFDocumentFromUnderlying(
-                   new CPDFXFA_Document(doc, CPDFXFA_App::GetInstance()))
-             : nullptr;
-#else   // PDF_ENABLE_XFA
-  return FPDFDocumentFromUnderlying(doc);
-#endif  // PDF_ENABLE_XFA
-}
-
-CPDF_Page* CPDFPageFromFPDFPage(FPDF_PAGE page) {
-#ifdef PDF_ENABLE_XFA
-  return page ? UnderlyingFromFPDFPage(page)->GetPDFPage() : nullptr;
-#else   // PDF_ENABLE_XFA
-  return UnderlyingFromFPDFPage(page);
-#endif  // PDF_ENABLE_XFA
-}
-
-#ifdef PDF_ENABLE_XFA
-CFPDF_FileStream::CFPDF_FileStream(FPDF_FILEHANDLER* pFS) {
-  m_pFS = pFS;
-  m_nCurPos = 0;
-}
-
-IFX_FileStream* CFPDF_FileStream::Retain() {
-  return this;
-}
-
-void CFPDF_FileStream::Release() {
-  if (m_pFS && m_pFS->Release)
-    m_pFS->Release(m_pFS->clientData);
-  delete this;
-}
-
-FX_FILESIZE CFPDF_FileStream::GetSize() {
-  if (m_pFS && m_pFS->GetSize)
-    return (FX_FILESIZE)m_pFS->GetSize(m_pFS->clientData);
-  return 0;
-}
-
-FX_BOOL CFPDF_FileStream::IsEOF() {
-  return m_nCurPos >= GetSize();
-}
-
-FX_BOOL CFPDF_FileStream::ReadBlock(void* buffer,
-                                    FX_FILESIZE offset,
-                                    size_t size) {
-  if (!buffer || !size || !m_pFS->ReadBlock)
-    return FALSE;
-
-  if (m_pFS->ReadBlock(m_pFS->clientData, (FPDF_DWORD)offset, buffer,
-                       (FPDF_DWORD)size) == 0) {
-    m_nCurPos = offset + size;
-    return TRUE;
-  }
-  return FALSE;
-}
-
-size_t CFPDF_FileStream::ReadBlock(void* buffer, size_t size) {
-  if (!buffer || !size || !m_pFS->ReadBlock)
-    return 0;
-
-  FX_FILESIZE nSize = GetSize();
-  if (m_nCurPos >= nSize)
-    return 0;
-  FX_FILESIZE dwAvail = nSize - m_nCurPos;
-  if (dwAvail < (FX_FILESIZE)size)
-    size = (size_t)dwAvail;
-  if (m_pFS->ReadBlock(m_pFS->clientData, (FPDF_DWORD)m_nCurPos, buffer,
-                       (FPDF_DWORD)size) == 0) {
-    m_nCurPos += size;
-    return size;
-  }
-
-  return 0;
-}
-
-FX_BOOL CFPDF_FileStream::WriteBlock(const void* buffer,
-                                     FX_FILESIZE offset,
-                                     size_t size) {
-  if (!m_pFS || !m_pFS->WriteBlock)
-    return FALSE;
-
-  if (m_pFS->WriteBlock(m_pFS->clientData, (FPDF_DWORD)offset, buffer,
-                        (FPDF_DWORD)size) == 0) {
-    m_nCurPos = offset + size;
-    return TRUE;
-  }
-  return FALSE;
-}
-
-FX_BOOL CFPDF_FileStream::Flush() {
-  if (!m_pFS || !m_pFS->Flush)
-    return TRUE;
-
-  return m_pFS->Flush(m_pFS->clientData) == 0;
-}
-#endif  // PDF_ENABLE_XFA
-
-CPDF_CustomAccess::CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess) {
-  m_FileAccess = *pFileAccess;
-#ifdef PDF_ENABLE_XFA
-  m_BufferOffset = (FX_DWORD)-1;
-#endif  // PDF_ENABLE_XFA
-}
-
-#ifdef PDF_ENABLE_XFA
-FX_BOOL CPDF_CustomAccess::GetByte(FX_DWORD pos, uint8_t& ch) {
-  if (pos >= m_FileAccess.m_FileLen)
-    return FALSE;
-  if (m_BufferOffset == (FX_DWORD)-1 || pos < m_BufferOffset ||
-      pos >= m_BufferOffset + 512) {
-    // Need to read from file access
-    m_BufferOffset = pos;
-    int size = 512;
-    if (pos + 512 > m_FileAccess.m_FileLen)
-      size = m_FileAccess.m_FileLen - pos;
-    if (!m_FileAccess.m_GetBlock(m_FileAccess.m_Param, m_BufferOffset, m_Buffer,
-                                 size))
-      return FALSE;
-  }
-  ch = m_Buffer[pos - m_BufferOffset];
-  return TRUE;
-}
-
-FX_BOOL CPDF_CustomAccess::GetBlock(FX_DWORD pos,
-                                    uint8_t* pBuf,
-                                    FX_DWORD size) {
-  if (pos + size > m_FileAccess.m_FileLen)
-    return FALSE;
-  return m_FileAccess.m_GetBlock(m_FileAccess.m_Param, pos, pBuf, size);
-}
-#endif  // PDF_ENABLE_XFA
-
-FX_BOOL CPDF_CustomAccess::ReadBlock(void* buffer,
-                                     FX_FILESIZE offset,
-                                     size_t size) {
-  if (offset < 0) {
-    return FALSE;
-  }
-  FX_SAFE_FILESIZE newPos =
-      pdfium::base::checked_cast<FX_FILESIZE, size_t>(size);
-  newPos += offset;
-  if (!newPos.IsValid() || newPos.ValueOrDie() > m_FileAccess.m_FileLen) {
-    return FALSE;
-  }
-  return m_FileAccess.m_GetBlock(m_FileAccess.m_Param, offset, (uint8_t*)buffer,
-                                 size);
-}
-
-// 0 bit: FPDF_POLICY_MACHINETIME_ACCESS
-static FX_DWORD foxit_sandbox_policy = 0xFFFFFFFF;
-
-void FSDK_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable) {
-  switch (policy) {
-    case FPDF_POLICY_MACHINETIME_ACCESS: {
-      if (enable)
-        foxit_sandbox_policy |= 0x01;
-      else
-        foxit_sandbox_policy &= 0xFFFFFFFE;
-    } break;
-    default:
-      break;
-  }
-}
-
-FPDF_BOOL FSDK_IsSandBoxPolicyEnabled(FPDF_DWORD policy) {
-  switch (policy) {
-    case FPDF_POLICY_MACHINETIME_ACCESS:
-      return !!(foxit_sandbox_policy & 0x01);
-    default:
-      return FALSE;
-  }
-}
-
-CCodec_ModuleMgr* g_pCodecModule = nullptr;
-
-DLLEXPORT void STDCALL FPDF_InitLibrary() {
-  FPDF_InitLibraryWithConfig(nullptr);
-}
-
-DLLEXPORT void STDCALL FPDF_InitLibraryWithConfig(
-    const FPDF_LIBRARY_CONFIG* cfg) {
-  g_pCodecModule = new CCodec_ModuleMgr();
-
-  CFX_GEModule::Create(cfg ? cfg->m_pUserFontPaths : nullptr);
-  CFX_GEModule::Get()->SetCodecModule(g_pCodecModule);
-
-  CPDF_ModuleMgr::Create();
-  CPDF_ModuleMgr* pModuleMgr = CPDF_ModuleMgr::Get();
-  pModuleMgr->SetCodecModule(g_pCodecModule);
-  pModuleMgr->InitPageModule();
-  pModuleMgr->InitRenderModule();
-#ifdef PDF_ENABLE_XFA
-  CPDFXFA_App::GetInstance()->Initialize(
-      (cfg && cfg->version >= 2)
-          ? reinterpret_cast<FXJSE_HRUNTIME>(cfg->m_pIsolate)
-          : nullptr);
-#else   // PDF_ENABLE_XFA
-  pModuleMgr->LoadEmbeddedGB1CMaps();
-  pModuleMgr->LoadEmbeddedJapan1CMaps();
-  pModuleMgr->LoadEmbeddedCNS1CMaps();
-  pModuleMgr->LoadEmbeddedKorea1CMaps();
-#endif  // PDF_ENABLE_XFA
-  if (cfg && cfg->version >= 2)
-    IJS_Runtime::Initialize(cfg->m_v8EmbedderSlot, cfg->m_pIsolate);
-}
-
-DLLEXPORT void STDCALL FPDF_DestroyLibrary() {
-#ifdef PDF_ENABLE_XFA
-  CPDFXFA_App::ReleaseInstance();
-#endif  // PDF_ENABLE_XFA
-  CPDF_ModuleMgr::Destroy();
-  CFX_GEModule::Destroy();
-
-  delete g_pCodecModule;
-  g_pCodecModule = nullptr;
-}
-
-#ifndef _WIN32
-int g_LastError;
-void SetLastError(int err) {
-  g_LastError = err;
-}
-
-int GetLastError() {
-  return g_LastError;
-}
-#endif  // _WIN32
-
-void ProcessParseError(CPDF_Parser::Error err) {
-  FX_DWORD err_code;
-  // Translate FPDFAPI error code to FPDFVIEW error code
-  switch (err) {
-    case CPDF_Parser::SUCCESS:
-      err_code = FPDF_ERR_SUCCESS;
-      break;
-    case CPDF_Parser::FILE_ERROR:
-      err_code = FPDF_ERR_FILE;
-      break;
-    case CPDF_Parser::FORMAT_ERROR:
-      err_code = FPDF_ERR_FORMAT;
-      break;
-    case CPDF_Parser::PASSWORD_ERROR:
-      err_code = FPDF_ERR_PASSWORD;
-      break;
-    case CPDF_Parser::HANDLER_ERROR:
-      err_code = FPDF_ERR_SECURITY;
-      break;
-  }
-  SetLastError(err_code);
-}
-
-DLLEXPORT void STDCALL FPDF_SetSandBoxPolicy(FPDF_DWORD policy,
-                                             FPDF_BOOL enable) {
-  return FSDK_SetSandBoxPolicy(policy, enable);
-}
-
-DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadDocument(FPDF_STRING file_path,
-                                                  FPDF_BYTESTRING password) {
-  // NOTE: the creation of the file needs to be by the embedder on the
-  // other side of this API.
-  IFX_FileRead* pFileAccess = FX_CreateFileRead((const FX_CHAR*)file_path);
-  if (!pFileAccess) {
-    return nullptr;
-  }
-
-  CPDF_Parser* pParser = new CPDF_Parser;
-  pParser->SetPassword(password);
-
-  CPDF_Parser::Error error = pParser->StartParse(pFileAccess);
-  if (error != CPDF_Parser::SUCCESS) {
-    delete pParser;
-    ProcessParseError(error);
-    return NULL;
-  }
-#ifdef PDF_ENABLE_XFA
-  CPDF_Document* pPDFDoc = pParser->GetDocument();
-  if (!pPDFDoc)
-    return NULL;
-
-  CPDFXFA_App* pProvider = CPDFXFA_App::GetInstance();
-  return new CPDFXFA_Document(pPDFDoc, pProvider);
-#else   // PDF_ENABLE_XFA
-  return pParser->GetDocument();
-#endif  // PDF_ENABLE_XFA
-}
-
-#ifdef PDF_ENABLE_XFA
-DLLEXPORT FPDF_BOOL STDCALL FPDF_HasXFAField(FPDF_DOCUMENT document,
-                                             int* docType) {
-  if (!document)
-    return FALSE;
-
-  CPDF_Document* pdfDoc =
-      (static_cast<CPDFXFA_Document*>(document))->GetPDFDoc();
-  if (!pdfDoc)
-    return FALSE;
-
-  CPDF_Dictionary* pRoot = pdfDoc->GetRoot();
-  if (!pRoot)
-    return FALSE;
-
-  CPDF_Dictionary* pAcroForm = pRoot->GetDictBy("AcroForm");
-  if (!pAcroForm)
-    return FALSE;
-
-  CPDF_Object* pXFA = pAcroForm->GetElement("XFA");
-  if (!pXFA)
-    return FALSE;
-
-  FX_BOOL bDynamicXFA = pRoot->GetBooleanBy("NeedsRendering", FALSE);
-
-  if (bDynamicXFA)
-    *docType = DOCTYPE_DYNAMIC_XFA;
-  else
-    *docType = DOCTYPE_STATIC_XFA;
-
-  return TRUE;
-}
-
-DLLEXPORT FPDF_BOOL STDCALL FPDF_LoadXFA(FPDF_DOCUMENT document) {
-  return document && (static_cast<CPDFXFA_Document*>(document))->LoadXFADoc();
-}
-#endif  // PDF_ENABLE_XFA
-
-class CMemFile final : public IFX_FileRead {
- public:
-  CMemFile(uint8_t* pBuf, FX_FILESIZE size) : m_pBuf(pBuf), m_size(size) {}
-
-  void Release() override { delete this; }
-  FX_FILESIZE GetSize() override { return m_size; }
-  FX_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_t>(size);
-    newPos += offset;
-    if (!newPos.IsValid() || newPos.ValueOrDie() > (FX_DWORD)m_size) {
-      return FALSE;
-    }
-    FXSYS_memcpy(buffer, m_pBuf + offset, size);
-    return TRUE;
-  }
-
- private:
-  ~CMemFile() override {}
-
-  uint8_t* const m_pBuf;
-  const FX_FILESIZE m_size;
-};
-
-DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadMemDocument(const void* data_buf,
-                                                     int size,
-                                                     FPDF_BYTESTRING password) {
-  CPDF_Parser* pParser = new CPDF_Parser;
-  pParser->SetPassword(password);
-  CMemFile* pMemFile = new CMemFile((uint8_t*)data_buf, size);
-  CPDF_Parser::Error error = pParser->StartParse(pMemFile);
-  if (error != CPDF_Parser::SUCCESS) {
-    delete pParser;
-    ProcessParseError(error);
-    return NULL;
-  }
-  CPDF_Document* pDoc = NULL;
-  pDoc = pParser ? pParser->GetDocument() : NULL;
-  CheckUnSupportError(pDoc, error);
-  return FPDFDocumentFromCPDFDocument(pParser->GetDocument());
-}
-
-DLLEXPORT FPDF_DOCUMENT STDCALL
-FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess,
-                        FPDF_BYTESTRING password) {
-  CPDF_Parser* pParser = new CPDF_Parser;
-  pParser->SetPassword(password);
-  CPDF_CustomAccess* pFile = new CPDF_CustomAccess(pFileAccess);
-  CPDF_Parser::Error error = pParser->StartParse(pFile);
-  if (error != CPDF_Parser::SUCCESS) {
-    delete pParser;
-    ProcessParseError(error);
-    return NULL;
-  }
-  CPDF_Document* pDoc = NULL;
-  pDoc = pParser ? pParser->GetDocument() : NULL;
-  CheckUnSupportError(pDoc, error);
-  return FPDFDocumentFromCPDFDocument(pParser->GetDocument());
-}
-
-DLLEXPORT FPDF_BOOL STDCALL FPDF_GetFileVersion(FPDF_DOCUMENT doc,
-                                                int* fileVersion) {
-  if (!fileVersion)
-    return FALSE;
-
-  *fileVersion = 0;
-  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(doc);
-  if (!pDoc)
-    return FALSE;
-
-  CPDF_Parser* pParser = pDoc->GetParser();
-  if (!pParser)
-    return FALSE;
-
-  *fileVersion = pParser->GetFileVersion();
-  return TRUE;
-}
-
-// jabdelmalek: changed return type from FX_DWORD to build on Linux (and match
-// header).
-DLLEXPORT unsigned long STDCALL FPDF_GetDocPermissions(FPDF_DOCUMENT document) {
-  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
-  if (!pDoc)
-#ifndef PDF_ENABLE_XFA
-    return 0;
-#else   // PDF_ENABLE_XFA
-    return (FX_DWORD)-1;
-#endif  // PDF_ENABLE_XFA
-
-  CPDF_Dictionary* pDict = pDoc->GetParser()->GetEncryptDict();
-  return pDict ? pDict->GetIntegerBy("P") : (FX_DWORD)-1;
-}
-
-DLLEXPORT int STDCALL FPDF_GetSecurityHandlerRevision(FPDF_DOCUMENT document) {
-  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
-  if (!pDoc)
-    return -1;
-
-  CPDF_Dictionary* pDict = pDoc->GetParser()->GetEncryptDict();
-  return pDict ? pDict->GetIntegerBy("R") : -1;
-}
-
-DLLEXPORT int STDCALL FPDF_GetPageCount(FPDF_DOCUMENT document) {
-  UnderlyingDocumentType* pDoc = UnderlyingFromFPDFDocument(document);
-  return pDoc ? pDoc->GetPageCount() : 0;
-}
-
-DLLEXPORT FPDF_PAGE STDCALL 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->GetPage(page_index);
-#else   // PDF_ENABLE_XFA
-  CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
-  if (!pDict)
-    return NULL;
-  CPDF_Page* pPage = new CPDF_Page;
-  pPage->Load(pDoc, pDict);
-  pPage->ParseContent(nullptr);
-  return pPage;
-#endif  // PDF_ENABLE_XFA
-}
-
-DLLEXPORT double STDCALL FPDF_GetPageWidth(FPDF_PAGE page) {
-  UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
-  return pPage ? pPage->GetPageWidth() : 0.0;
-}
-
-DLLEXPORT double STDCALL FPDF_GetPageHeight(FPDF_PAGE page) {
-  UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
-  return pPage ? pPage->GetPageHeight() : 0.0;
-}
-
-void DropContext(void* data) {
-  delete (CRenderContext*)data;
-}
-
-#if defined(_WIN32)
-DLLEXPORT void STDCALL 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;
-
-  CRenderContext* pContext = new CRenderContext;
-  pPage->SetPrivateData((void*)1, pContext, DropContext);
-
-#if !defined(_WIN32_WCE)
-  CFX_DIBitmap* pBitmap = nullptr;
-  FX_BOOL bBackgroundAlphaNeeded = pPage->BackgroundAlphaNeeded();
-  FX_BOOL bHasImageMask = pPage->HasImageMask();
-  if (bBackgroundAlphaNeeded || bHasImageMask) {
-    pBitmap = new CFX_DIBitmap;
-    pBitmap->Create(size_x, size_y, FXDIB_Argb);
-    pBitmap->Clear(0x00ffffff);
-#ifdef _SKIA_SUPPORT_
-    pContext->m_pDevice = new CFX_SkiaDevice;
-    ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)pBitmap);
-#else
-    pContext->m_pDevice = new CFX_FxgeDevice;
-    ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)pBitmap);
-#endif
-  } else {
-    pContext->m_pDevice = new CFX_WindowsDevice(dc);
-  }
-
-  FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
-                         rotate, flags, TRUE, NULL);
-
-  if (bBackgroundAlphaNeeded || bHasImageMask) {
-    if (pBitmap) {
-      CFX_WindowsDevice WinDC(dc);
-
-      if (WinDC.GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) {
-        CFX_DIBitmap* pDst = new CFX_DIBitmap;
-        int pitch = pBitmap->GetPitch();
-        pDst->Create(size_x, size_y, FXDIB_Rgb32);
-        FXSYS_memset(pDst->GetBuffer(), -1, pitch * size_y);
-        pDst->CompositeBitmap(0, 0, size_x, size_y, pBitmap, 0, 0,
-                              FXDIB_BLEND_NORMAL, NULL, FALSE, NULL);
-        WinDC.StretchDIBits(pDst, 0, 0, size_x, size_y);
-        delete pDst;
-      } else {
-        WinDC.SetDIBits(pBitmap, 0, 0);
-      }
-    }
-  }
-#else
-  // get clip region
-  RECT rect, cliprect;
-  rect.left = start_x;
-  rect.top = start_y;
-  rect.right = start_x + size_x;
-  rect.bottom = start_y + size_y;
-  GetClipBox(dc, &cliprect);
-  IntersectRect(&rect, &rect, &cliprect);
-  int width = rect.right - rect.left;
-  int height = rect.bottom - rect.top;
-
-  // Create a DIB section
-  LPVOID pBuffer;
-  BITMAPINFOHEADER bmih;
-  FXSYS_memset(&bmih, 0, sizeof bmih);
-  bmih.biSize = sizeof bmih;
-  bmih.biBitCount = 24;
-  bmih.biHeight = -height;
-  bmih.biPlanes = 1;
-  bmih.biWidth = width;
-  pContext->m_hBitmap = CreateDIBSection(dc, (BITMAPINFO*)&bmih, DIB_RGB_COLORS,
-                                         &pBuffer, NULL, 0);
-  FXSYS_memset(pBuffer, 0xff, height * ((width * 3 + 3) / 4 * 4));
-
-  // Create a device with this external buffer
-  pContext->m_pBitmap = new CFX_DIBitmap;
-  pContext->m_pBitmap->Create(width, height, FXDIB_Rgb, (uint8_t*)pBuffer);
-  pContext->m_pDevice = new CPDF_FxgeDevice;
-  ((CPDF_FxgeDevice*)pContext->m_pDevice)->Attach(pContext->m_pBitmap);
-
-  // output to bitmap device
-  FPDF_RenderPage_Retail(pContext, page, start_x - rect.left,
-                         start_y - rect.top, size_x, size_y, rotate, flags);
-
-  // Now output to real device
-  HDC hMemDC = CreateCompatibleDC(dc);
-  HGDIOBJ hOldBitmap = SelectObject(hMemDC, pContext->m_hBitmap);
-
-  BitBlt(dc, rect.left, rect.top, width, height, hMemDC, 0, 0, SRCCOPY);
-  SelectObject(hMemDC, hOldBitmap);
-  DeleteDC(hMemDC);
-
-#endif  // !defined(_WIN32_WCE)
-  if (bBackgroundAlphaNeeded || bHasImageMask)
-    delete pBitmap;
-
-  delete pContext;
-  pPage->RemovePrivateData((void*)1);
-}
-#endif  // defined(_WIN32)
-
-DLLEXPORT void STDCALL 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;
-  CRenderContext* pContext = new CRenderContext;
-  pPage->SetPrivateData((void*)1, pContext, DropContext);
-#ifdef _SKIA_SUPPORT_
-  pContext->m_pDevice = new CFX_SkiaDevice;
-
-  if (flags & FPDF_REVERSE_BYTE_ORDER)
-    ((CFX_SkiaDevice*)pContext->m_pDevice)
-        ->Attach((CFX_DIBitmap*)bitmap, 0, TRUE);
-  else
-    ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap);
-#else
-  pContext->m_pDevice = new CFX_FxgeDevice;
-
-  if (flags & FPDF_REVERSE_BYTE_ORDER)
-    ((CFX_FxgeDevice*)pContext->m_pDevice)
-        ->Attach((CFX_DIBitmap*)bitmap, 0, TRUE);
-  else
-    ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)bitmap);
-#endif
-
-  FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
-                         rotate, flags, TRUE, NULL);
-
-  delete pContext;
-  pPage->RemovePrivateData((void*)1);
-}
-
-DLLEXPORT void STDCALL FPDF_ClosePage(FPDF_PAGE page) {
-  if (!page)
-    return;
-#ifdef PDF_ENABLE_XFA
-  CPDFXFA_Page* pPage = (CPDFXFA_Page*)page;
-  pPage->Release();
-#else   // PDF_ENABLE_XFA
-  CPDFSDK_PageView* pPageView =
-      (CPDFSDK_PageView*)(((CPDF_Page*)page))->GetPrivateData((void*)page);
-  if (pPageView && pPageView->IsLocked()) {
-    pPageView->TakeOverPage();
-    return;
-  }
-  delete (CPDF_Page*)page;
-#endif  // PDF_ENABLE_XFA
-}
-
-DLLEXPORT void STDCALL FPDF_CloseDocument(FPDF_DOCUMENT document) {
-#ifdef PDF_ENABLE_XFA
-  delete UnderlyingFromFPDFDocument(document);
-#else   // PDF_ENABLE_XFA
-  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
-  if (!pDoc)
-    return;
-  CPDF_Parser* pParser = pDoc->GetParser();
-  if (!pParser) {
-    delete pDoc;
-    return;
-  }
-  delete pParser;
-#endif  // PDF_ENABLE_XFA
-}
-
-DLLEXPORT unsigned long STDCALL FPDF_GetLastError() {
-  return GetLastError();
-}
-
-DLLEXPORT void STDCALL 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(page2device, start_x, start_y, size_x, size_y,
-                          rotate);
-  CFX_Matrix device2page;
-  device2page.SetReverse(page2device);
-  FX_FLOAT page_x_f, page_y_f;
-  device2page.Transform((FX_FLOAT)(device_x), (FX_FLOAT)(device_y), page_x_f,
-                        page_y_f);
-  *page_x = (page_x_f);
-  *page_y = (page_y_f);
-#endif  // PDF_ENABLE_XFA
-}
-
-DLLEXPORT void STDCALL 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(page2device, start_x, start_y, size_x, size_y,
-                          rotate);
-  FX_FLOAT device_x_f, device_y_f;
-  page2device.Transform(((FX_FLOAT)page_x), ((FX_FLOAT)page_y), device_x_f,
-                        device_y_f);
-  *device_x = FXSYS_round(device_x_f);
-  *device_y = FXSYS_round(device_y_f);
-#endif  // PDF_ENABLE_XFA
-}
-
-DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_Create(int width,
-                                                int height,
-                                                int alpha) {
-  std::unique_ptr<CFX_DIBitmap> pBitmap(new CFX_DIBitmap);
-  if (!pBitmap->Create(width, height, alpha ? FXDIB_Argb : FXDIB_Rgb32)) {
-    return NULL;
-  }
-  return pBitmap.release();
-}
-
-DLLEXPORT FPDF_BITMAP STDCALL 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 NULL;
-  }
-  CFX_DIBitmap* pBitmap = new CFX_DIBitmap;
-  pBitmap->Create(width, height, fx_format, (uint8_t*)first_scan, stride);
-  return pBitmap;
-}
-
-DLLEXPORT void STDCALL FPDFBitmap_FillRect(FPDF_BITMAP bitmap,
-                                           int left,
-                                           int top,
-                                           int width,
-                                           int height,
-                                           FPDF_DWORD color) {
-  if (!bitmap)
-    return;
-#ifdef _SKIA_SUPPORT_
-  CFX_SkiaDevice device;
-#else
-  CFX_FxgeDevice device;
-#endif
-  device.Attach((CFX_DIBitmap*)bitmap);
-  if (!((CFX_DIBitmap*)bitmap)->HasAlpha())
-    color |= 0xFF000000;
-  FX_RECT rect(left, top, left + width, top + height);
-  device.FillRect(&rect, color);
-}
-
-DLLEXPORT void* STDCALL FPDFBitmap_GetBuffer(FPDF_BITMAP bitmap) {
-  return bitmap ? ((CFX_DIBitmap*)bitmap)->GetBuffer() : nullptr;
-}
-
-DLLEXPORT int STDCALL FPDFBitmap_GetWidth(FPDF_BITMAP bitmap) {
-  return bitmap ? ((CFX_DIBitmap*)bitmap)->GetWidth() : 0;
-}
-
-DLLEXPORT int STDCALL FPDFBitmap_GetHeight(FPDF_BITMAP bitmap) {
-  return bitmap ? ((CFX_DIBitmap*)bitmap)->GetHeight() : 0;
-}
-
-DLLEXPORT int STDCALL FPDFBitmap_GetStride(FPDF_BITMAP bitmap) {
-  return bitmap ? ((CFX_DIBitmap*)bitmap)->GetPitch() : 0;
-}
-
-DLLEXPORT void STDCALL FPDFBitmap_Destroy(FPDF_BITMAP bitmap) {
-  delete (CFX_DIBitmap*)bitmap;
-}
-
-void FPDF_RenderPage_Retail(CRenderContext* pContext,
-                            FPDF_PAGE page,
-                            int start_x,
-                            int start_y,
-                            int size_x,
-                            int size_y,
-                            int rotate,
-                            int flags,
-                            FX_BOOL bNeedToRestore,
-                            IFSDK_PAUSE_Adapter* pause) {
-  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
-  if (!pPage)
-    return;
-
-  if (!pContext->m_pOptions)
-    pContext->m_pOptions = new CPDF_RenderOptions;
-
-  if (flags & FPDF_LCD_TEXT)
-    pContext->m_pOptions->m_Flags |= RENDER_CLEARTYPE;
-  else
-    pContext->m_pOptions->m_Flags &= ~RENDER_CLEARTYPE;
-  if (flags & FPDF_NO_NATIVETEXT)
-    pContext->m_pOptions->m_Flags |= RENDER_NO_NATIVETEXT;
-  if (flags & FPDF_RENDER_LIMITEDIMAGECACHE)
-    pContext->m_pOptions->m_Flags |= RENDER_LIMITEDIMAGECACHE;
-  if (flags & FPDF_RENDER_FORCEHALFTONE)
-    pContext->m_pOptions->m_Flags |= RENDER_FORCE_HALFTONE;
-#ifndef PDF_ENABLE_XFA
-  if (flags & FPDF_RENDER_NO_SMOOTHTEXT)
-    pContext->m_pOptions->m_Flags |= RENDER_NOTEXTSMOOTH;
-  if (flags & FPDF_RENDER_NO_SMOOTHIMAGE)
-    pContext->m_pOptions->m_Flags |= RENDER_NOIMAGESMOOTH;
-  if (flags & FPDF_RENDER_NO_SMOOTHPATH)
-    pContext->m_pOptions->m_Flags |= RENDER_NOPATHSMOOTH;
-#endif  // PDF_ENABLE_XFA
-  // Grayscale output
-  if (flags & FPDF_GRAYSCALE) {
-    pContext->m_pOptions->m_ColorMode = RENDER_COLOR_GRAY;
-    pContext->m_pOptions->m_ForeColor = 0;
-    pContext->m_pOptions->m_BackColor = 0xffffff;
-  }
-  const CPDF_OCContext::UsageType usage =
-      (flags & FPDF_PRINTING) ? CPDF_OCContext::Print : CPDF_OCContext::View;
-  pContext->m_pOptions->m_AddFlags = flags >> 8;
-  pContext->m_pOptions->m_pOCContext =
-      new CPDF_OCContext(pPage->m_pDocument, usage);
-
-  CFX_Matrix matrix;
-  pPage->GetDisplayMatrix(matrix, start_x, start_y, size_x, size_y, rotate);
-
-  pContext->m_pDevice->SaveState();
-  pContext->m_pDevice->SetClip_Rect(
-      FX_RECT(start_x, start_y, start_x + size_x, start_y + size_y));
-
-  pContext->m_pContext = new CPDF_RenderContext(pPage);
-  pContext->m_pContext->AppendLayer(pPage, &matrix);
-
-  if (flags & FPDF_ANNOT) {
-    pContext->m_pAnnots = new CPDF_AnnotList(pPage);
-    FX_BOOL bPrinting = pContext->m_pDevice->GetDeviceClass() != FXDC_DISPLAY;
-    pContext->m_pAnnots->DisplayAnnots(pPage, pContext->m_pContext, bPrinting,
-                                       &matrix, TRUE, NULL);
-  }
-
-  pContext->m_pRenderer = new CPDF_ProgressiveRenderer(
-      pContext->m_pContext, pContext->m_pDevice, pContext->m_pOptions);
-  pContext->m_pRenderer->Start(pause);
-  if (bNeedToRestore)
-    pContext->m_pDevice->RestoreState();
-}
-
-DLLEXPORT int STDCALL 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;
-  CPDFXFA_Page* pPage = pDoc->GetPage(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;
-  page.Load(pDoc, pDict);
-  *width = page.GetPageWidth();
-  *height = page.GetPageHeight();
-#endif  // PDF_ENABLE_XFA
-
-  return TRUE;
-}
-
-DLLEXPORT FPDF_BOOL STDCALL
-FPDF_VIEWERREF_GetPrintScaling(FPDF_DOCUMENT document) {
-  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
-  if (!pDoc)
-    return TRUE;
-  CPDF_ViewerPreferences viewRef(pDoc);
-  return viewRef.PrintScaling();
-}
-
-DLLEXPORT int STDCALL FPDF_VIEWERREF_GetNumCopies(FPDF_DOCUMENT document) {
-  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
-  if (!pDoc)
-    return 1;
-  CPDF_ViewerPreferences viewRef(pDoc);
-  return viewRef.NumCopies();
-}
-
-DLLEXPORT FPDF_PAGERANGE STDCALL
-FPDF_VIEWERREF_GetPrintPageRange(FPDF_DOCUMENT document) {
-  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
-  if (!pDoc)
-    return NULL;
-  CPDF_ViewerPreferences viewRef(pDoc);
-  return viewRef.PrintPageRange();
-}
-
-DLLEXPORT FPDF_DUPLEXTYPE STDCALL
-FPDF_VIEWERREF_GetDuplex(FPDF_DOCUMENT document) {
-  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
-  if (!pDoc)
-    return DuplexUndefined;
-  CPDF_ViewerPreferences viewRef(pDoc);
-  CFX_ByteString duplex = viewRef.Duplex();
-  if ("Simplex" == duplex)
-    return Simplex;
-  if ("DuplexFlipShortEdge" == duplex)
-    return DuplexFlipShortEdge;
-  if ("DuplexFlipLongEdge" == duplex)
-    return DuplexFlipLongEdge;
-  return DuplexUndefined;
-}
-
-DLLEXPORT FPDF_DWORD STDCALL FPDF_CountNamedDests(FPDF_DOCUMENT document) {
-  CPDF_Document* pDoc = CPDFDocumentFromFPDFDocument(document);
-  if (!pDoc)
-    return 0;
-
-  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->GetDictBy("Dests");
-  if (pDest)
-    count += pDest->GetCount();
-
-  if (!count.IsValid())
-    return 0;
-
-  return count.ValueOrDie();
-}
-
-DLLEXPORT FPDF_DEST STDCALL 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, name);
-}
-
-#ifdef PDF_ENABLE_XFA
-FPDF_RESULT FPDF_BStr_Init(FPDF_BSTR* str) {
-  if (!str)
-    return -1;
-
-  FXSYS_memset(str, 0, sizeof(FPDF_BSTR));
-  return 0;
-}
-
-FPDF_RESULT FPDF_BStr_Set(FPDF_BSTR* str, FPDF_LPCSTR bstr, int length) {
-  if (!str)
-    return -1;
-  if (!bstr || !length)
-    return -1;
-  if (length == -1)
-    length = FXSYS_strlen(bstr);
-
-  if (length == 0) {
-    if (str->str) {
-      FX_Free(str->str);
-      str->str = NULL;
-    }
-    str->len = 0;
-    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;
-  if (str->str == NULL)
-    return -1;
-
-  FXSYS_memcpy(str->str, bstr, length);
-  str->len = length;
-
-  return 0;
-}
-
-FPDF_RESULT FPDF_BStr_Clear(FPDF_BSTR* str) {
-  if (!str)
-    return -1;
-
-  if (str->str) {
-    FX_Free(str->str);
-    str->str = NULL;
-  }
-  str->len = 0;
-  return 0;
-}
-#endif  // PDF_ENABLE_XFA
-
-DLLEXPORT FPDF_DEST STDCALL 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;
-
-  CPDF_Dictionary* pRoot = pDoc->GetRoot();
-  if (!pRoot)
-    return nullptr;
-
-  CPDF_Object* pDestObj = nullptr;
-  CFX_ByteString bsName;
-  CPDF_NameTree nameTree(pDoc, "Dests");
-  int count = nameTree.GetCount();
-  if (index >= count) {
-    CPDF_Dictionary* pDest = pRoot->GetDictBy("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;
-    for (const auto& it : *pDest) {
-      bsName = it.first;
-      pDestObj = it.second;
-      if (!pDestObj)
-        continue;
-      if (i == index)
-        break;
-      i++;
-    }
-  } else {
-    pDestObj = nameTree.LookupValue(index, bsName);
-  }
-  if (!pDestObj)
-    return nullptr;
-  if (CPDF_Dictionary* pDict = pDestObj->AsDictionary()) {
-    pDestObj = pDict->GetArrayBy("D");
-    if (!pDestObj)
-      return nullptr;
-  }
-  if (!pDestObj->IsArray())
-    return nullptr;
-
-  CFX_WideString wsName = PDF_DecodeText(bsName);
-  CFX_ByteString utf16Name = wsName.UTF16LE_Encode();
-  unsigned int len = utf16Name.GetLength();
-  if (!buffer) {
-    *buflen = len;
-  } else if (*buflen >= len) {
-    memcpy(buffer, utf16Name.c_str(), len);
-    *buflen = len;
-  } else {
-    *buflen = -1;
-  }
-  return (FPDF_DEST)pDestObj;
-}