// 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_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; }