FX_BOOL considered harmful, part 2.
[pdfium.git] / fpdfsdk / src / fpdfview.cpp
index 10eaf5d..5a72e8f 100644 (file)
@@ -1,52 +1,37 @@
 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
+
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
+#include "../../core/include/fxcodec/fx_codec.h"
+#include "../../core/include/fxcrt/fx_safe_types.h"
+#include "../../public/fpdf_ext.h"
+#include "../../public/fpdf_progressive.h"
+#include "../../public/fpdfview.h"
+#include "../../third_party/base/nonstd_unique_ptr.h"
+#include "../../third_party/base/numerics/safe_conversions_impl.h"
 #include "../include/fsdk_define.h"
-#include "../include/fpdfview.h"
+#include "../include/fsdk_mgr.h"
 #include "../include/fsdk_rendercontext.h"
-#include "../include/fpdf_progressive.h"
-#include "../include/fpdf_ext.h"
-
 
 CPDF_CustomAccess::CPDF_CustomAccess(FPDF_FILEACCESS* pFileAccess)
 {
-       m_FileAccess = *pFileAccess;
-       m_BufferOffset = (FX_DWORD)-1;
+    if (pFileAccess)
+        m_FileAccess = *pFileAccess;
 }
 
-FX_BOOL CPDF_CustomAccess::GetByte(FX_DWORD pos, FX_BYTE& ch)
+bool CPDF_CustomAccess::ReadBlock(void* buffer, FX_FILESIZE offset, size_t size)
 {
-       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, FX_LPBYTE 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);
-}
-
-FX_BOOL CPDF_CustomAccess::ReadBlock(void* buffer, FX_FILESIZE offset, size_t size)
-{
-       //      m_FileAccess = *pFileAccess;
-       //      m_BufferOffset = (FX_DWORD)-1;
-       if (offset + size > m_FileAccess.m_FileLen) return FALSE;
-       return m_FileAccess.m_GetBlock(m_FileAccess.m_Param, offset,(FX_LPBYTE) buffer, size);
-
-       //      return FALSE;
+    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
@@ -54,152 +39,81 @@ 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;
-       }
+    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:
-               {
-                       if(foxit_sandbox_policy&0x01)
-                               return TRUE;
-                       else
-                               return FALSE;
-               }
-               break;
-       default:
-               break;
-       }
-       return FALSE;
+    switch(policy)
+    {
+    case FPDF_POLICY_MACHINETIME_ACCESS:
+        return (foxit_sandbox_policy & 0x01) ? true : false;
+    default:
+        return false;
+    }
 }
 
-
 #ifndef _T
 #define _T(x) x
 #endif
 
-#ifdef API5
-       CPDF_ModuleMgr* g_pModuleMgr = NULL;
-#else
-       CCodec_ModuleMgr*       g_pCodecModule = NULL;
-#endif
-
-//extern CPDFSDK_FormFillApp* g_pFormFillApp;
+CCodec_ModuleMgr* g_pCodecModule = nullptr;
 
 #if _FX_OS_ == _FX_LINUX_EMBEDDED_
 class CFontMapper : public IPDF_FontMapper
 {
 public:
-       CFontMapper();
-       virtual ~CFontMapper();
-
-       virtual FT_Face FindSubstFont(
-                                                       CPDF_Document* pDoc,                            // [IN] The PDF document
-                                                       const CFX_ByteString& face_name,        // [IN] Original name
-                                                       FX_BOOL bTrueType,                                      // [IN] TrueType or Type1
-                                                       FX_DWORD flags,                                         // [IN] PDF font flags (see PDF Reference section 5.7.1)
-                                                       int font_weight,                                        // [IN] original font weight. 0 for not specified
-                                                       int CharsetCP,                                          // [IN] code page for charset (see Win32 GetACP())
-                                                       FX_BOOL bVertical,
-                                                       CPDF_SubstFont* pSubstFont                      // [OUT] Subst font data
-                                               );
-
-       FT_Face m_SysFace;
+    CFontMapper();
+    virtual ~CFontMapper();
+
+    virtual FT_Face FindSubstFont(
+                            CPDF_Document* pDoc,                // [IN] The PDF document
+                            const CFX_ByteString& face_name,    // [IN] Original name
+                            bool bTrueType,                  // [IN] TrueType or Type1
+                            FX_DWORD flags,                     // [IN] PDF font flags (see PDF Reference section 5.7.1)
+                            int font_weight,                    // [IN] original font weight. 0 for not specified
+                            int CharsetCP,                      // [IN] code page for charset (see Win32 GetACP())
+                            bool bVertical,
+                            CPDF_SubstFont* pSubstFont          // [OUT] Subst font data
+                        );
+
+    FT_Face m_SysFace;
 };
 
 CFontMapper* g_pFontMapper = NULL;
-#endif         // #if _FX_OS_ == _FX_LINUX_EMBEDDED_
-
-DLLEXPORT void STDCALL FPDF_InitLibrary(FX_LPVOID hInstance)
-{
-#ifdef API5
-       CPDF_ModuleMgr::Create();
-       g_pModuleMgr = CPDF_ModuleMgr::Get();
-        #if _FX_OS_ == _FX_WIN32_MOBILE_ || _FX_OS_ == _FX_LINUX_EMBEDDED_
-               g_pModuleMgr->InitEmbedded();
-        #ifdef _GB1_CMAPS_
-               g_pModuleMgr->LoadEmbeddedGB1CMaps();
-        #endif
-        #ifdef _GB1_CMAPS_4_
-               g_pModuleMgr->LoadEmbeddedGB1CMaps_4();
-        #endif
-        #ifdef _CNS1_CMAPS_
-               g_pModuleMgr->LoadEmbeddedCNS1CMaps();
-        #endif
-        #ifdef _JAPAN1_CMAPS_
-               g_pModuleMgr->LoadEmbeddedJapan1CMaps();
-        #endif
-        #ifdef _JAPAN1_CMAPS_6_
-               g_pModuleMgr->LoadEmbeddedJapan1CMaps_6();
-        #endif
-        #ifdef _KOREA1_CMAPS_
-               g_pModuleMgr->LoadEmbeddedKorea1CMaps();
-        #endif
-        #ifdef _JPX_DECODER_
-               g_pModuleMgr->InitJpxModule();
-               g_pModuleMgr->InitJbig2Module();
-        //     g_pModuleMgr->InitIccModule();
-        #endif
-        #else
-               g_pModuleMgr->InitDesktop();
-        #endif
-#else
-       g_pCodecModule = CCodec_ModuleMgr::Create();
-       
-       CFX_GEModule::Create();
-       CFX_GEModule::Get()->SetCodecModule(g_pCodecModule);
-       
-       CPDF_ModuleMgr::Create();
-       CPDF_ModuleMgr::Get()->SetCodecModule(g_pCodecModule);
-       CPDF_ModuleMgr::Get()->InitPageModule();
-       CPDF_ModuleMgr::Get()->InitRenderModule();
-#ifdef FOXIT_CHROME_BUILD
-       CPDF_ModuleMgr * pModuleMgr = CPDF_ModuleMgr::Get();
-       if ( pModuleMgr )
-       {
-               pModuleMgr->LoadEmbeddedGB1CMaps();
-               pModuleMgr->LoadEmbeddedJapan1CMaps();
-               pModuleMgr->LoadEmbeddedCNS1CMaps();
-               pModuleMgr->LoadEmbeddedKorea1CMaps();
-       }
-#endif 
-#endif
+#endif      // #if _FX_OS_ == _FX_LINUX_EMBEDDED_
 
-#ifdef _WIN32
-       // Get module path
-       TCHAR app_path[MAX_PATH];
-       ::GetModuleFileName((HINSTANCE)hInstance, app_path, MAX_PATH);
-       size_t len = _tcslen(app_path);
-       for (size_t i = len; i >= 0; i --)
-               if (app_path[i] == '\\') {
-                       app_path[i] = 0;
-                       break;
-               }
-               
-#ifdef _UNICODE
-               #ifndef _FXSDK_OPENSOURCE_
-               CPDF_ModuleMgr::Get()->SetModulePath(NULL, CFX_ByteString::FromUnicode(app_path));
-               #endif
-#else
-#ifndef _FXSDK_OPENSOURCE_
-               CPDF_ModuleMgr::Get()->SetModulePath(NULL, app_path);
-#endif
-#endif
-#endif
+DLLEXPORT void STDCALL FPDF_InitLibrary()
+{
+    g_pCodecModule = new CCodec_ModuleMgr();
+
+    CFX_GEModule::Create();
+    CFX_GEModule::Get()->SetCodecModule(g_pCodecModule);
+
+    CPDF_ModuleMgr::Create();
+    CPDF_ModuleMgr::Get()->SetCodecModule(g_pCodecModule);
+    CPDF_ModuleMgr::Get()->InitPageModule();
+    CPDF_ModuleMgr::Get()->InitRenderModule();
+    CPDF_ModuleMgr * pModuleMgr = CPDF_ModuleMgr::Get();
+    if ( pModuleMgr )
+    {
+        pModuleMgr->LoadEmbeddedGB1CMaps();
+        pModuleMgr->LoadEmbeddedJapan1CMaps();
+        pModuleMgr->LoadEmbeddedCNS1CMaps();
+        pModuleMgr->LoadEmbeddedKorea1CMaps();
+    }
 }
 
 
@@ -207,667 +121,731 @@ DLLEXPORT void STDCALL FPDF_DestroyLibrary()
 {
 
 #if _FX_OS_ == _FX_LINUX_EMBEDDED_
-       if (g_pFontMapper) delete g_pFontMapper;
-#endif
-#ifdef API5
-       g_pModuleMgr->Destroy();
-#else
-       CPDF_ModuleMgr::Destroy();
-       CFX_GEModule::Destroy();
-       g_pCodecModule->Destroy();
-#endif
-#ifndef _FXSDK_OPENSOURCE_
-       FXMEM_CollectAll(FXMEM_GetDefaultMgr());
-#else
-
+    delete g_pFontMapper;
+    g_pFontMapper = nullptr;
 #endif
+    CPDF_ModuleMgr::Destroy();
+    CFX_GEModule::Destroy();
+    delete g_pCodecModule;
+    g_pCodecModule = nullptr;
 }
 
 #ifndef _WIN32
 int g_LastError;
 void SetLastError(int err)
 {
-       g_LastError = err;
+    g_LastError = err;
 }
 
 int GetLastError()
 {
-       return g_LastError;
+    return g_LastError;
 }
 #endif
 
 void ProcessParseError(FX_DWORD err_code)
 {
-       // Translate FPDFAPI error code to FPDFVIEW error code
-       switch (err_code) {
-               case PDFPARSE_ERROR_FILE:
-                       err_code = FPDF_ERR_FILE;
-                       break;
-               case PDFPARSE_ERROR_FORMAT:
-                       err_code = FPDF_ERR_FORMAT;
-                       break;
-               case PDFPARSE_ERROR_PASSWORD:
-                       err_code = FPDF_ERR_PASSWORD;
-                       break;
-               case PDFPARSE_ERROR_HANDLER:
-                       err_code = FPDF_ERR_SECURITY;
-                       break;
-       }
-       SetLastError(err_code);
+    // Translate FPDFAPI error code to FPDFVIEW error code
+    switch (err_code) {
+        case PDFPARSE_ERROR_FILE:
+            err_code = FPDF_ERR_FILE;
+            break;
+        case PDFPARSE_ERROR_FORMAT:
+            err_code = FPDF_ERR_FORMAT;
+            break;
+        case PDFPARSE_ERROR_PASSWORD:
+            err_code = FPDF_ERR_PASSWORD;
+            break;
+        case PDFPARSE_ERROR_HANDLER:
+            err_code = FPDF_ERR_SECURITY;
+            break;
+    }
+    SetLastError(err_code);
 }
 
-DLLEXPORT void STDCALL FPDF_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable)
+DLLEXPORT void  STDCALL FPDF_SetSandBoxPolicy(FPDF_DWORD policy, FPDF_BOOL enable)
 {
-       return FSDK_SetSandBoxPolicy(policy, enable);
+    return FSDK_SetSandBoxPolicy(policy, enable);
 }
 
 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadDocument(FPDF_STRING file_path, FPDF_BYTESTRING password)
 {
-       CPDF_Parser* pParser = FX_NEW CPDF_Parser;
-       pParser->SetPassword(password);
-       try {
-               FX_DWORD err_code = pParser->StartParse((FX_LPCSTR)file_path);
-               if (err_code) {
-                       delete pParser;
-                       ProcessParseError(err_code);
-                       return NULL;
-               }
-       }
-       catch (...) {
-               delete pParser;
-               SetLastError(FPDF_ERR_UNKNOWN);
-               return NULL;
-       }
-       return pParser->GetDocument();
+    CPDF_Parser* pParser = new CPDF_Parser;
+    pParser->SetPassword(password);
+
+    FX_DWORD err_code = pParser->StartParse((const FX_CHAR*)file_path);
+    if (err_code) {
+        delete pParser;
+        ProcessParseError(err_code);
+        return NULL;
+    }
+    return pParser->GetDocument();
 }
 
 extern void CheckUnSupportError(CPDF_Document * pDoc, FX_DWORD err_code);
 
-class CMemFile: public IFX_FileRead, public CFX_Object
+class CMemFile final: public IFX_FileRead
 {
 public:
-       CMemFile(FX_BYTE* pBuf, FX_FILESIZE size):m_pBuf(pBuf),m_size(size) {}
-
-       virtual void                    Release() {delete this;}
-       virtual FX_FILESIZE             GetSize() {return m_size;}
-       virtual FX_BOOL                 ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) 
-       {
-               if(offset+size > (FX_DWORD)m_size) return FALSE;
-               FXSYS_memcpy(buffer, m_pBuf+offset, size);
-               return TRUE;
-       }
+    CMemFile(uint8_t* pBuf, FX_FILESIZE size):m_pBuf(pBuf),m_size(size) {}
+
+    virtual void            Release() {delete this;}
+    virtual FX_FILESIZE     GetSize() {return m_size;}
+    virtual bool         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() > (FX_DWORD)m_size) {
+                return false;
+            }
+        FXSYS_memcpy(buffer, m_pBuf+offset, size);
+        return true;
+    }
 private:
-       FX_BYTE* m_pBuf;
-       FX_FILESIZE m_size;
+    uint8_t* m_pBuf;
+    FX_FILESIZE m_size;
 };
 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadMemDocument(const void* data_buf, int size, FPDF_BYTESTRING password)
 {
-       CPDF_Parser* pParser = FX_NEW CPDF_Parser;
-       pParser->SetPassword(password);
-       try {
-               CMemFile* pMemFile = FX_NEW CMemFile((FX_BYTE*)data_buf, size);
-               FX_DWORD err_code = pParser->StartParse(pMemFile);
-               if (err_code) {
-                       delete pParser;
-                       ProcessParseError(err_code);
-                       return NULL;
-               }
-               CPDF_Document * pDoc = NULL;
-               pDoc = pParser?pParser->GetDocument():NULL;
-               CheckUnSupportError(pDoc, err_code);
-       }
-       catch (...) {
-               delete pParser;
-               SetLastError(FPDF_ERR_UNKNOWN);
-               return NULL;
-       }
-       return pParser->GetDocument();
+    CPDF_Parser* pParser = new CPDF_Parser;
+    pParser->SetPassword(password);
+    CMemFile* pMemFile = new CMemFile((uint8_t*)data_buf, size);
+    FX_DWORD err_code = pParser->StartParse(pMemFile);
+    if (err_code) {
+        delete pParser;
+        ProcessParseError(err_code);
+        return NULL;
+    }
+    CPDF_Document * pDoc = NULL;
+    pDoc = pParser?pParser->GetDocument():NULL;
+    CheckUnSupportError(pDoc, err_code);
+    return pParser->GetDocument();
 }
 
 DLLEXPORT FPDF_DOCUMENT STDCALL FPDF_LoadCustomDocument(FPDF_FILEACCESS* pFileAccess, FPDF_BYTESTRING password)
 {
-       CPDF_Parser* pParser = FX_NEW CPDF_Parser;
-       pParser->SetPassword(password);
-       CPDF_CustomAccess* pFile = FX_NEW CPDF_CustomAccess(pFileAccess);
-       try {
-               FX_DWORD err_code = pParser->StartParse(pFile);
-               if (err_code) {
-                       delete pParser;
-                       ProcessParseError(err_code);
-                       return NULL;
-               }
-               CPDF_Document * pDoc = NULL;
-               pDoc = pParser?pParser->GetDocument():NULL;
-               CheckUnSupportError(pDoc, err_code);
-       }
-       catch (...) {
-               delete pParser;
-               SetLastError(FPDF_ERR_UNKNOWN);
-               return NULL;
-       }
-       return pParser->GetDocument();
+    CPDF_Parser* pParser = new CPDF_Parser;
+    pParser->SetPassword(password);
+    CPDF_CustomAccess* pFile = new CPDF_CustomAccess(pFileAccess);
+    FX_DWORD err_code = pParser->StartParse(pFile);
+    if (err_code) {
+        delete pParser;
+        ProcessParseError(err_code);
+        return NULL;
+    }
+    CPDF_Document * pDoc = NULL;
+    pDoc = pParser?pParser->GetDocument():NULL;
+    CheckUnSupportError(pDoc, err_code);
+    return pParser->GetDocument();
 }
 
 DLLEXPORT FPDF_BOOL STDCALL FPDF_GetFileVersion(FPDF_DOCUMENT doc, int* fileVersion)
 {
-       if(!doc||!fileVersion) return FALSE;
-       *fileVersion = 0;
-       CPDF_Document* pDoc = (CPDF_Document*)doc;
-       CPDF_Parser* pParser = (CPDF_Parser*)pDoc->GetParser();
-       if(!pParser)
-               return FALSE;
-       *fileVersion = pParser->GetFileVersion();
-       return TRUE;
+    if(!doc||!fileVersion) return false;
+    *fileVersion = 0;
+    CPDF_Document* pDoc = (CPDF_Document*)doc;
+    CPDF_Parser* pParser = (CPDF_Parser*)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)
 {
-       if (document == NULL) return 0;
-       CPDF_Document*pDoc = (CPDF_Document*)document;
-       CPDF_Parser* pParser =  (CPDF_Parser*)pDoc->GetParser();
-       CPDF_Dictionary* pDict = pParser->GetEncryptDict();
-       if (pDict == NULL) return (FX_DWORD)-1;
+    if (document == NULL) return 0;
+    CPDF_Document*pDoc = (CPDF_Document*)document;
+    CPDF_Parser* pParser =  (CPDF_Parser*)pDoc->GetParser();
+    CPDF_Dictionary* pDict = pParser->GetEncryptDict();
+    if (pDict == NULL) return (FX_DWORD)-1;
 
-       return pDict->GetInteger("P");
+    return pDict->GetInteger("P");
+}
+
+DLLEXPORT int STDCALL FPDF_GetSecurityHandlerRevision(FPDF_DOCUMENT document)
+{
+    if (document == NULL) return -1;
+    CPDF_Document*pDoc = (CPDF_Document*)document;
+    CPDF_Parser* pParser = (CPDF_Parser*)pDoc->GetParser();
+    CPDF_Dictionary* pDict = pParser->GetEncryptDict();
+    if (pDict == NULL) return -1;
+
+    return pDict->GetInteger("R");
 }
 
 DLLEXPORT int STDCALL FPDF_GetPageCount(FPDF_DOCUMENT document)
 {
-       if (document == NULL) return 0;
-       return ((CPDF_Document*)document)->GetPageCount();
+    if (document == NULL) return 0;
+    return ((CPDF_Document*)document)->GetPageCount();
 }
 
 DLLEXPORT FPDF_PAGE STDCALL FPDF_LoadPage(FPDF_DOCUMENT document, int page_index)
 {
-       if (document == NULL) return NULL;
-       if (page_index < 0 || page_index >= FPDF_GetPageCount(document)) return NULL;
-//     CPDF_Parser* pParser = (CPDF_Parser*)document;
-       CPDF_Document* pDoc = (CPDF_Document*)document;
-       if (pDoc == NULL) return NULL;
-       CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
-       if (pDict == NULL) return NULL;
-       CPDF_Page* pPage = FX_NEW CPDF_Page;
-       pPage->Load(pDoc, pDict);
-       try {
-               pPage->ParseContent();
-       }
-       catch (...) {
-               delete pPage;
-               return NULL;
-       }
-       
-//     CheckUnSupportError(pDoc, 0);
-
-       return pPage;
+    if (document == NULL) return NULL;
+    if (page_index < 0 || page_index >= FPDF_GetPageCount(document)) return NULL;
+
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+    if (pDoc == NULL) return NULL;
+    CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
+    if (pDict == NULL) return NULL;
+    CPDF_Page* pPage = new CPDF_Page;
+    pPage->Load(pDoc, pDict);
+    pPage->ParseContent();
+    return pPage;
 }
 
 DLLEXPORT double STDCALL FPDF_GetPageWidth(FPDF_PAGE page)
 {
-       if (!page)
-               return 0.0;
-       return ((CPDF_Page*)page)->GetPageWidth();
+    if (!page)
+        return 0.0;
+    return ((CPDF_Page*)page)->GetPageWidth();
 }
 
 DLLEXPORT double STDCALL FPDF_GetPageHeight(FPDF_PAGE page)
 {
-       if (!page) return 0.0;
-       return ((CPDF_Page*)page)->GetPageHeight();
+    if (!page) return 0.0;
+    return ((CPDF_Page*)page)->GetPageHeight();
 }
 
 void DropContext(void* data)
 {
-       delete (CRenderContext*)data;
+    delete (CRenderContext*)data;
 }
 
-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  );
-void (*Func_RenderPage)(CRenderContext*, 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  ) = FPDF_RenderPage_Retail;
-
 #if defined(_DEBUG) || defined(DEBUG)
 #define DEBUG_TRACE
 #endif
 
 #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)
+                        int rotate, int flags)
 {
-       if (page==NULL) return;
-       CPDF_Page* pPage = (CPDF_Page*)page;
+    if (page==NULL) return;
+    CPDF_Page* pPage = (CPDF_Page*)page;
 
-       CRenderContext* pContext = FX_NEW CRenderContext;
-       pPage->SetPrivateData((void*)1, pContext, DropContext);
+    CRenderContext* pContext = new CRenderContext;
+    pPage->SetPrivateData((void*)1, pContext, DropContext);
 
 #ifndef _WIN32_WCE
-       CFX_DIBitmap* pBitmap = NULL;
-       FX_BOOL bBackgroundAlphaNeeded=FALSE;
-       bBackgroundAlphaNeeded = pPage->BackgroundAlphaNeeded();
-       if (bBackgroundAlphaNeeded)
-       {
-               
-               pBitmap = FX_NEW CFX_DIBitmap;
-               pBitmap->Create(size_x, size_y, FXDIB_Argb);
-               pBitmap->Clear(0x00ffffff);
+    CFX_DIBitmap* pBitmap = NULL;
+    bool bBackgroundAlphaNeeded=false;
+    bBackgroundAlphaNeeded = pPage->BackgroundAlphaNeeded();
+    if (bBackgroundAlphaNeeded)
+    {
+
+        pBitmap = new CFX_DIBitmap;
+        pBitmap->Create(size_x, size_y, FXDIB_Argb);
+        pBitmap->Clear(0x00ffffff);
 #ifdef _SKIA_SUPPORT_
-               pContext->m_pDevice = FX_NEW CFX_SkiaDevice;
-               ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)pBitmap);
+        pContext->m_pDevice = new CFX_SkiaDevice;
+        ((CFX_SkiaDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)pBitmap);
 #else
-               pContext->m_pDevice = FX_NEW CFX_FxgeDevice;
-               ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)pBitmap);
+        pContext->m_pDevice = new CFX_FxgeDevice;
+        ((CFX_FxgeDevice*)pContext->m_pDevice)->Attach((CFX_DIBitmap*)pBitmap);
 #endif
-       }
-       else
-       pContext->m_pDevice = FX_NEW CFX_WindowsDevice(dc);
-       if (flags & FPDF_NO_CATCH)
-               Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,TRUE,NULL);
-       else {
-               try {
-                       Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,TRUE,NULL);
-               } catch (...) {
-               }
-       }
-       if (bBackgroundAlphaNeeded) 
-       {
-               if (pBitmap)
-               {
-                       CFX_WindowsDevice WinDC(dc);
-                       
-                       if (WinDC.GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER)
-                       {
-                               CFX_DIBitmap* pDst = FX_NEW CFX_DIBitmap;
-                               pDst->Create(pBitmap->GetWidth(), pBitmap->GetHeight(),FXDIB_Rgb32);
-                               FXSYS_memcpy(pDst->GetBuffer(), pBitmap->GetBuffer(), pBitmap->GetPitch()*pBitmap->GetHeight());
-//                             WinDC.SetDIBits(pDst,0,0);
-                               WinDC.StretchDIBits(pDst,0,0,size_x*2,size_y*2);
-                               delete pDst;
-                       }
-                       else
-                               WinDC.SetDIBits(pBitmap,0,0);
-
-               }
-       }
+    }
+    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)
+    {
+        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;
+    // 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;
 
 #ifdef DEBUG_TRACE
-       {
-               char str[128];
-               sprintf(str, "Rendering DIB %d x %d", width, height);
-               CPDF_ModuleMgr::Get()->ReportError(999, str);
-       }
+    {
+        char str[128];
+        memset(str, 0, sizeof(str));
+        FXSYS_snprintf(str, sizeof(str) - 1, "Rendering DIB %d x %d", width, height);
+        CPDF_ModuleMgr::Get()->ReportError(999, str);
+    }
 #endif
 
-       // 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);
-       if (pContext->m_hBitmap == NULL) {
+    // 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);
+    if (pContext->m_hBitmap == NULL) {
 #if defined(DEBUG) || defined(_DEBUG)
-               char str[128];
-               sprintf(str, "Error CreateDIBSection: %d x %d, error code = %d", width, height, GetLastError());
-               CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, str);
+        char str[128];
+        memset(str, 0, sizeof(str));
+        FXSYS_snprintf(str, sizeof(str) - 1, "Error CreateDIBSection: %d x %d, error code = %d", width, height, GetLastError());
+        CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, str);
 #else
-               CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, NULL);
+        CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, NULL);
 #endif
-       }
-       FXSYS_memset(pBuffer, 0xff, height*((width*3+3)/4*4));
+    }
+    FXSYS_memset(pBuffer, 0xff, height*((width*3+3)/4*4));
 
 #ifdef DEBUG_TRACE
-       {
-               CPDF_ModuleMgr::Get()->ReportError(999, "DIBSection created");
-       }
+    {
+        CPDF_ModuleMgr::Get()->ReportError(999, "DIBSection created");
+    }
 #endif
 
-       // Create a device with this external buffer
-       pContext->m_pBitmap = FX_NEW CFX_DIBitmap;
-       pContext->m_pBitmap->Create(width, height, FXDIB_Rgb, (FX_LPBYTE)pBuffer);
-       pContext->m_pDevice = FX_NEW CPDF_FxgeDevice;
-       ((CPDF_FxgeDevice*)pContext->m_pDevice)->Attach(pContext->m_pBitmap);
-       
+    // 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);
+
 #ifdef DEBUG_TRACE
-       CPDF_ModuleMgr::Get()->ReportError(999, "Ready for PDF rendering");
+    CPDF_ModuleMgr::Get()->ReportError(999, "Ready for PDF rendering");
 #endif
 
-       // output to bitmap device
-       if (flags & FPDF_NO_CATCH)
-               Func_RenderPage(pContext, page, start_x - rect.left, start_y - rect.top, size_x, size_y, rotate, flags);
-       else {
-               try {
-                       Func_RenderPage(pContext, page, start_x - rect.left, start_y - rect.top, size_x, size_y, rotate, flags);
-               } catch (...) {
-               }
-       }
+    // output to bitmap device
+    FPDF_RenderPage_Retail(pContext, page, start_x - rect.left,
+                           start_y - rect.top, size_x, size_y, rotate, flags);
 
 #ifdef DEBUG_TRACE
-       CPDF_ModuleMgr::Get()->ReportError(999, "Finished PDF rendering");
+    CPDF_ModuleMgr::Get()->ReportError(999, "Finished PDF rendering");
 #endif
 
-       // Now output to real device
-       HDC hMemDC = CreateCompatibleDC(dc);
-       if (hMemDC == NULL) {
+    // Now output to real device
+    HDC hMemDC = CreateCompatibleDC(dc);
+    if (hMemDC == NULL) {
 #if defined(DEBUG) || defined(_DEBUG)
-               char str[128];
-               sprintf(str, "Error CreateCompatibleDC. Error code = %d", GetLastError());
-               CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, str);
+        char str[128];
+        memset(str, 0, sizeof(str));
+        FXSYS_snprintf(str, sizeof(str) - 1, "Error CreateCompatibleDC. Error code = %d", GetLastError());
+        CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, str);
 #else
-               CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, NULL);
+        CPDF_ModuleMgr::Get()->ReportError(FPDFERR_OUT_OF_MEMORY, NULL);
 #endif
-       }
+    }
 
-       HGDIOBJ hOldBitmap = SelectObject(hMemDC, pContext->m_hBitmap);
+    HGDIOBJ hOldBitmap = SelectObject(hMemDC, pContext->m_hBitmap);
 
 #ifdef DEBUG_TRACE
-       CPDF_ModuleMgr::Get()->ReportError(999, "Ready for screen rendering");
+    CPDF_ModuleMgr::Get()->ReportError(999, "Ready for screen rendering");
 #endif
 
-       BitBlt(dc, rect.left, rect.top, width, height, hMemDC, 0, 0, SRCCOPY);
-       SelectObject(hMemDC, hOldBitmap);
-       DeleteDC(hMemDC);
+    BitBlt(dc, rect.left, rect.top, width, height, hMemDC, 0, 0, SRCCOPY);
+    SelectObject(hMemDC, hOldBitmap);
+    DeleteDC(hMemDC);
 
 #ifdef DEBUG_TRACE
-       CPDF_ModuleMgr::Get()->ReportError(999, "Finished screen rendering");
+    CPDF_ModuleMgr::Get()->ReportError(999, "Finished screen rendering");
 #endif
 
 #endif
-       if (bBackgroundAlphaNeeded)
-       {
-               if (pBitmap)
-                       delete pBitmap;
-               pBitmap = NULL;
-       }
-       delete pContext;
-       pPage->RemovePrivateData((void*)1);
+    if (bBackgroundAlphaNeeded) {
+        delete pBitmap;
+        pBitmap = NULL;
+    }
+    delete pContext;
+    pPage->RemovePrivateData((void*)1);
 }
 #endif
 
-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)
+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 == NULL || page == NULL) return;
-       CPDF_Page* pPage = (CPDF_Page*)page;
+    if (bitmap == NULL || page == NULL) return;
+    CPDF_Page* pPage = (CPDF_Page*)page;
 
 
-       CRenderContext* pContext = FX_NEW CRenderContext;
-       pPage->SetPrivateData((void*)1, pContext, DropContext);
+    CRenderContext* pContext = new CRenderContext;
+    pPage->SetPrivateData((void*)1, pContext, DropContext);
 #ifdef _SKIA_SUPPORT_
-       pContext->m_pDevice = FX_NEW CFX_SkiaDevice;
+    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);
+    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 = FX_NEW CFX_FxgeDevice;
+    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);
+    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
-       if (flags & FPDF_NO_CATCH)
-               Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,TRUE,NULL);
-       else {
-               try {
-                       Func_RenderPage(pContext, page, start_x, start_y, size_x, size_y, rotate, flags,TRUE,NULL);
-               } catch (...) {
-               }
-       }
 
-       delete pContext;
-       pPage->RemovePrivateData((void*)1);
+    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;
-       delete (CPDF_Page*)page;
+    if (!page) return;
+        CPDFSDK_PageView* pPageView = (CPDFSDK_PageView*)(((CPDF_Page*)page))->GetPrivateData((void*)page);
+        if (pPageView && pPageView->IsLocked()) {
+            pPageView->TakeOverPage();
+            return;
+        }
+    delete (CPDF_Page*)page;
 
 }
 
 DLLEXPORT void STDCALL FPDF_CloseDocument(FPDF_DOCUMENT document)
 {
-       if (!document)
-               return;
-       CPDF_Document* pDoc = (CPDF_Document*)document; 
-       CPDF_Parser* pParser = (CPDF_Parser*)pDoc->GetParser();
-       if (pParser == NULL) 
-       {
-               delete pDoc;
-               return;
-       }
-       delete pParser;
-//     delete pDoc;
+    if (!document)
+        return;
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+    CPDF_Parser* pParser = (CPDF_Parser*)pDoc->GetParser();
+    if (pParser == NULL)
+    {
+        delete pDoc;
+        return;
+    }
+    delete pParser;
 }
 
 DLLEXPORT unsigned long STDCALL FPDF_GetLastError()
 {
-       return 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)
+                        int rotate, int device_x, int device_y, double* page_x, double* page_y)
 {
-       if (page == NULL || page_x == NULL || page_y == NULL) return;
-       CPDF_Page* pPage = (CPDF_Page*)page;
+    if (page == NULL || page_x == NULL || page_y == NULL) return;
+    CPDF_Page* pPage = (CPDF_Page*)page;
 
-       CPDF_Matrix page2device;
-       pPage->GetDisplayMatrix(page2device, start_x, start_y, size_x, size_y, rotate);
-       CPDF_Matrix device2page;
-       device2page.SetReverse(page2device);
+    CPDF_Matrix page2device;
+    pPage->GetDisplayMatrix(page2device, start_x, start_y, size_x, size_y, rotate);
+    CPDF_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);
+    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);
+    *page_x = (page_x_f);
+    *page_y = (page_y_f);
 }
 
 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)
+                        int rotate, double page_x, double page_y, int* device_x, int* device_y)
 {
-       if (page == NULL || device_x == NULL || device_y == NULL) return;
-       CPDF_Page* pPage = (CPDF_Page*)page;
+    if (page == NULL || device_x == NULL || device_y == NULL) return;
+    CPDF_Page* pPage = (CPDF_Page*)page;
 
-       CPDF_Matrix page2device;
-       pPage->GetDisplayMatrix(page2device, start_x, start_y, size_x, size_y, rotate);
+    CPDF_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);
+    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);
+    *device_x = FXSYS_round(device_x_f);
+    *device_y = FXSYS_round(device_y_f);
 }
 
 DLLEXPORT FPDF_BITMAP STDCALL FPDFBitmap_Create(int width, int height, int alpha)
 {
-       CFX_DIBitmap* pBitmap = FX_NEW CFX_DIBitmap;
-       pBitmap->Create(width, height, alpha ? FXDIB_Argb : FXDIB_Rgb32);
-       return pBitmap;
+    nonstd::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 = FX_NEW CFX_DIBitmap;
-       pBitmap->Create(width, height, fx_format, (FX_LPBYTE)first_scan, stride);
-       return pBitmap;
-}
-
-DLLEXPORT void STDCALL FPDFBitmap_FillRect(FPDF_BITMAP bitmap, int left, int top, int width, int height, 
-                                                                       int red, int green, int blue, int alpha)
-{
-       if (bitmap == NULL) return;
+    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 == NULL) return;
 #ifdef _SKIA_SUPPORT_
-       CFX_SkiaDevice device;
+    CFX_SkiaDevice device;
 #else
-       CFX_FxgeDevice device;
+    CFX_FxgeDevice device;
 #endif
-       device.Attach((CFX_DIBitmap*)bitmap);
-       if (!((CFX_DIBitmap*)bitmap)->HasAlpha()) alpha = 255;
-       FX_RECT rect(left, top, left+width, top+height);
-       device.FillRect(&rect, FXARGB_MAKE(alpha, red, green, blue));
+    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)
 {
-       if (bitmap == NULL) return NULL;
-       return ((CFX_DIBitmap*)bitmap)->GetBuffer();
+    if (bitmap == NULL) return NULL;
+    return ((CFX_DIBitmap*)bitmap)->GetBuffer();
 }
 
 DLLEXPORT int STDCALL FPDFBitmap_GetWidth(FPDF_BITMAP bitmap)
 {
-       if (bitmap == NULL) return 0;
-       return ((CFX_DIBitmap*)bitmap)->GetWidth();
+    if (bitmap == NULL) return 0;
+    return ((CFX_DIBitmap*)bitmap)->GetWidth();
 }
 
 DLLEXPORT int STDCALL FPDFBitmap_GetHeight(FPDF_BITMAP bitmap)
 {
-       if (bitmap == NULL) return 0;
-       return ((CFX_DIBitmap*)bitmap)->GetHeight();
+    if (bitmap == NULL) return 0;
+    return ((CFX_DIBitmap*)bitmap)->GetHeight();
 }
 
 DLLEXPORT int STDCALL FPDFBitmap_GetStride(FPDF_BITMAP bitmap)
 {
-       if (bitmap == NULL) return 0;
-       return ((CFX_DIBitmap*)bitmap)->GetPitch();
+    if (bitmap == NULL) return 0;
+    return ((CFX_DIBitmap*)bitmap)->GetPitch();
 }
 
 DLLEXPORT void STDCALL FPDFBitmap_Destroy(FPDF_BITMAP bitmap)
 {
-       if (bitmap == NULL) return;
-       delete (CFX_DIBitmap*)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 )
-{
-//#ifdef _LICENSED_BUILD_
-       CPDF_Page* pPage = (CPDF_Page*)page;
-       if (pPage == NULL) return;
-
-       if (!pContext->m_pOptions)
-               pContext->m_pOptions = new CPDF_RenderOptions;
-//     CPDF_RenderOptions options;
-       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;
-       //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_AffineMatrix matrix;
-       pPage->GetDisplayMatrix(matrix, start_x, start_y, size_x, size_y, rotate); 
-
-       FX_RECT clip;
-       clip.left = start_x;
-       clip.right = start_x + size_x;
-       clip.top = start_y;
-       clip.bottom = start_y + size_y;
-       pContext->m_pDevice->SaveState();
-       pContext->m_pDevice->SetClip_Rect(&clip);
-
-       pContext->m_pContext = FX_NEW CPDF_RenderContext;
-       pContext->m_pContext->Create(pPage);
-       pContext->m_pContext->AppendObjectList(pPage, &matrix);
-
-       if (flags & FPDF_ANNOT) {
-               pContext->m_pAnnots = FX_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 = FX_NEW CPDF_ProgressiveRenderer;
-       pContext->m_pRenderer->Start(pContext->m_pContext, pContext->m_pDevice, pContext->m_pOptions, pause);
-       if (bNeedToRestore)
-       {
-         pContext->m_pDevice->RestoreState();
-       }
-       
-//#endif
+                            int rotate, int flags,bool bNeedToRestore, IFSDK_PAUSE_Adapter * pause )
+{
+    CPDF_Page* pPage = (CPDF_Page*)page;
+    if (pPage == NULL) 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;
+    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;
+    //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_AffineMatrix matrix;
+    pPage->GetDisplayMatrix(matrix, start_x, start_y, size_x, size_y, rotate);
+
+    FX_RECT clip;
+    clip.left = start_x;
+    clip.right = start_x + size_x;
+    clip.top = start_y;
+    clip.bottom = start_y + size_y;
+    pContext->m_pDevice->SaveState();
+    pContext->m_pDevice->SetClip_Rect(&clip);
+
+    pContext->m_pContext = new CPDF_RenderContext;
+    pContext->m_pContext->Create(pPage);
+    pContext->m_pContext->AppendObjectList(pPage, &matrix);
+
+    if (flags & FPDF_ANNOT) {
+        pContext->m_pAnnots = new CPDF_AnnotList(pPage);
+        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)
 {
-       CPDF_Document* pDoc = (CPDF_Document*)document;
-       if(pDoc == NULL)
-               return FALSE;
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+    if(pDoc == NULL)
+        return false;
 
-       CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
-       if (pDict == NULL) return FALSE;
+    CPDF_Dictionary* pDict = pDoc->GetPage(page_index);
+    if (pDict == NULL) return false;
 
-       CPDF_Page page;
-       page.Load(pDoc, pDict);
-       *width = page.GetPageWidth();
-       *height = page.GetPageHeight();
+    CPDF_Page page;
+    page.Load(pDoc, pDict);
+    *width = page.GetPageWidth();
+    *height = page.GetPageHeight();
 
-       return TRUE;
+    return true;
 }
 
 DLLEXPORT FPDF_BOOL STDCALL FPDF_VIEWERREF_GetPrintScaling(FPDF_DOCUMENT document)
 {
-       CPDF_Document* pDoc = (CPDF_Document*)document;
-       if (!pDoc) return TRUE;
-       CPDF_ViewerPreferences viewRef(pDoc);
-       return viewRef.PrintScaling();
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+    if (!pDoc) return true;
+    CPDF_ViewerPreferences viewRef(pDoc);
+    return viewRef.PrintScaling();
 }
 
-DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDestByName(FPDF_DOCUMENT document,FPDF_BYTESTRING name)
+DLLEXPORT int STDCALL FPDF_VIEWERREF_GetNumCopies(FPDF_DOCUMENT document)
+{
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+    if (!pDoc) return 1;
+    CPDF_ViewerPreferences viewRef(pDoc);
+    return viewRef.NumCopies();
+}
+
+DLLEXPORT FPDF_PAGERANGE STDCALL FPDF_VIEWERREF_GetPrintPageRange(FPDF_DOCUMENT document)
 {
-       if (document == NULL)
-               return NULL;
-       if (name == NULL || name[0] == 0) 
-               return NULL;
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+    if (!pDoc) return NULL;
+    CPDF_ViewerPreferences viewRef(pDoc);
+    return viewRef.PrintPageRange();
+}
 
-       CPDF_Document* pDoc = (CPDF_Document*)document;
-       CPDF_NameTree name_tree(pDoc, FX_BSTRC("Dests"));
-       return name_tree.LookupNamedDest(pDoc, name);
+DLLEXPORT FPDF_DUPLEXTYPE STDCALL FPDF_VIEWERREF_GetDuplex(FPDF_DOCUMENT document)
+{
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+    if (!pDoc) return DuplexUndefined;
+    CPDF_ViewerPreferences viewRef(pDoc);
+    CFX_ByteString duplex = viewRef.Duplex();
+    if (FX_BSTRC("Simplex") == duplex)
+        return Simplex;
+    if (FX_BSTRC("DuplexFlipShortEdge") == duplex)
+        return DuplexFlipShortEdge;
+    if (FX_BSTRC("DuplexFlipLongEdge") == duplex)
+        return DuplexFlipLongEdge;
+    return DuplexUndefined;
+}
+
+DLLEXPORT FPDF_DWORD STDCALL FPDF_CountNamedDests(FPDF_DOCUMENT document)
+{
+    if (!document) return 0;
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+
+    CPDF_Dictionary* pRoot = pDoc->GetRoot();
+    if (!pRoot) return 0;
+
+    CPDF_NameTree nameTree(pDoc, FX_BSTRC("Dests"));
+    int count = nameTree.GetCount();
+    CPDF_Dictionary* pDest = pRoot->GetDict(FX_BSTRC("Dests"));
+    if (pDest)
+        count += pDest->GetCount();
+    return count;
+}
+
+DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDestByName(FPDF_DOCUMENT document,FPDF_BYTESTRING name)
+{
+    if (!document)
+        return NULL;
+    if (!name || name[0] == 0)
+        return NULL;
+
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+    CPDF_NameTree name_tree(pDoc, FX_BSTRC("Dests"));
+    return name_tree.LookupNamedDest(pDoc, name);
+}
+
+DLLEXPORT FPDF_DEST STDCALL FPDF_GetNamedDest(FPDF_DOCUMENT document, int index, void* buffer, long* buflen)
+{
+    if (!buffer)
+        *buflen = 0;
+    if (!document || index < 0) return NULL;
+    CPDF_Document* pDoc = (CPDF_Document*)document;
+
+    CPDF_Dictionary* pRoot = pDoc->GetRoot();
+    if (!pRoot) return NULL;
+
+    CPDF_Object* pDestObj = NULL;
+    CFX_ByteString bsName;
+    CPDF_NameTree nameTree(pDoc, FX_BSTRC("Dests"));
+    int count = nameTree.GetCount();
+    if (index >= count) {
+        CPDF_Dictionary* pDest = pRoot->GetDict(FX_BSTRC("Dests"));
+        if (!pDest) return NULL;
+        if (index >= count + pDest->GetCount()) return NULL;
+        index -= count;
+        FX_POSITION pos = pDest->GetStartPos();
+        int i = 0;
+        while (pos) {
+            pDestObj = pDest->GetNextElement(pos, bsName);
+            if (!pDestObj) continue;
+            if (i == index) break;
+            i++;
+        }
+    } else {
+        pDestObj = nameTree.LookupValue(index, bsName);
+    }
+    if (!pDestObj) return NULL;
+    if (pDestObj->GetType() == PDFOBJ_DICTIONARY) {
+        pDestObj = ((CPDF_Dictionary*)pDestObj)->GetArray(FX_BSTRC("D"));
+        if (!pDestObj) return NULL;
+    }
+    if (pDestObj->GetType() != PDFOBJ_ARRAY) return NULL;
+    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;
 }