// 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 #ifndef CORE_INCLUDE_FPDFAPI_FPDF_RENDER_H_ #define CORE_INCLUDE_FPDFAPI_FPDF_RENDER_H_ #include <map> #include <memory> #include "core/include/fpdfapi/fpdf_page.h" #include "core/include/fxge/fx_ge.h" class CFX_GraphStateData; class CFX_PathData; class CFX_RenderDevice; class CPDF_FormObject; class CPDF_ImageCacheEntry; class CPDF_ImageObject; class CPDF_PathObject; class CPDF_RenderStatus; class CPDF_ShadingObject; class CPDF_TextObject; class IFX_Pause; class IPDF_OCContext { public: virtual ~IPDF_OCContext() {} virtual FX_BOOL CheckOCGVisible(const CPDF_Dictionary* pOCG) = 0; FX_BOOL CheckObjectVisible(const CPDF_PageObject* pObj); }; #define RENDER_COLOR_NORMAL 0 #define RENDER_COLOR_GRAY 1 #define RENDER_COLOR_TWOCOLOR 2 #define RENDER_COLOR_ALPHA 3 #define RENDER_CLEARTYPE 0x00000001 #define RENDER_PRINTGRAPHICTEXT 0x00000002 #define RENDER_FORCE_DOWNSAMPLE 0x00000004 #define RENDER_PRINTPREVIEW 0x00000008 #define RENDER_BGR_STRIPE 0x00000010 #define RENDER_NO_NATIVETEXT 0x00000020 #define RENDER_FORCE_HALFTONE 0x00000040 #define RENDER_RECT_AA 0x00000080 #define RENDER_FILL_FULLCOVER 0x00000100 #define RENDER_PRINTIMAGETEXT 0x00000200 #define RENDER_OVERPRINT 0x00000400 #define RENDER_THINLINE 0x00000800 #define RENDER_NOTEXTSMOOTH 0x10000000 #define RENDER_NOPATHSMOOTH 0x20000000 #define RENDER_NOIMAGESMOOTH 0x40000000 #define RENDER_LIMITEDIMAGECACHE 0x80000000 class CPDF_RenderOptions { public: CPDF_RenderOptions(); FX_ARGB TranslateColor(FX_ARGB argb) const; int m_ColorMode; FX_COLORREF m_BackColor; FX_COLORREF m_ForeColor; FX_DWORD m_Flags; int m_Interpolation; FX_DWORD m_AddFlags; IPDF_OCContext* m_pOCContext; FX_DWORD m_dwLimitCacheSize; int m_HalftoneLimit; }; class CPDF_RenderContext { public: class Layer { public: CPDF_PageObjectHolder* m_pObjectHolder; CFX_Matrix m_Matrix; }; explicit CPDF_RenderContext(CPDF_Page* pPage); CPDF_RenderContext(CPDF_Document* pDoc, CPDF_PageRenderCache* pPageCache); ~CPDF_RenderContext(); void AppendLayer(CPDF_PageObjectHolder* pObjectHolder, const CFX_Matrix* pObject2Device); void Render(CFX_RenderDevice* pDevice, const CPDF_RenderOptions* pOptions, const CFX_Matrix* pFinalMatrix); void Render(CFX_RenderDevice* pDevice, const CPDF_PageObject* pStopObj, const CPDF_RenderOptions* pOptions, const CFX_Matrix* pFinalMatrix); void GetBackground(CFX_DIBitmap* pBuffer, const CPDF_PageObject* pObj, const CPDF_RenderOptions* pOptions, CFX_Matrix* pFinalMatrix); FX_DWORD CountLayers() const { return m_Layers.GetSize(); } Layer* GetLayer(FX_DWORD index) { return m_Layers.GetDataPtr(index); } CPDF_Document* GetDocument() const { return m_pDocument; } CPDF_Dictionary* GetPageResources() const { return m_pPageResources; } CPDF_PageRenderCache* GetPageCache() const { return m_pPageCache; } protected: CPDF_Document* const m_pDocument; CPDF_Dictionary* m_pPageResources; CPDF_PageRenderCache* m_pPageCache; FX_BOOL m_bFirstLayer; CFX_ArrayTemplate<Layer> m_Layers; }; class CPDF_ProgressiveRenderer { public: // Must match FDF_RENDER_* definitions in public/fpdf_progressive.h, but // cannot #include that header. fpdfsdk/src/fpdf_progressive.cpp has // static_asserts to make sure the two sets of values match. enum Status { Ready, // FPDF_RENDER_READER ToBeContinued, // FPDF_RENDER_TOBECOUNTINUED Done, // FPDF_RENDER_DONE Failed // FPDF_RENDER_FAILED }; static int ToFPDFStatus(Status status) { return static_cast<int>(status); } CPDF_ProgressiveRenderer(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice, const CPDF_RenderOptions* pOptions); ~CPDF_ProgressiveRenderer(); Status GetStatus() const { return m_Status; } void Start(IFX_Pause* pPause); void Continue(IFX_Pause* pPause); private: void RenderStep(); // Maximum page objects to render before checking for pause. static const int kStepLimit = 100; Status m_Status; CPDF_RenderContext* const m_pContext; CFX_RenderDevice* const m_pDevice; const CPDF_RenderOptions* const m_pOptions; std::unique_ptr<CPDF_RenderStatus> m_pRenderStatus; CFX_FloatRect m_ClipRect; FX_DWORD m_LayerIndex; CPDF_RenderContext::Layer* m_pCurrentLayer; CPDF_PageObjectList::iterator m_LastObjectRendered; }; class CPDF_TextRenderer { public: static void DrawTextString(CFX_RenderDevice* pDevice, int left, int top, CPDF_Font* pFont, int height, const CFX_ByteString& str, FX_ARGB argb); static void DrawTextString(CFX_RenderDevice* pDevice, FX_FLOAT origin_x, FX_FLOAT origin_y, CPDF_Font* pFont, FX_FLOAT font_size, const CFX_Matrix* matrix, const CFX_ByteString& str, FX_ARGB fill_argb, FX_ARGB stroke_argb = 0, const CFX_GraphStateData* pGraphState = NULL, const CPDF_RenderOptions* pOptions = NULL); static FX_BOOL DrawTextPath(CFX_RenderDevice* pDevice, int nChars, FX_DWORD* pCharCodes, FX_FLOAT* pCharPos, CPDF_Font* pFont, FX_FLOAT font_size, const CFX_Matrix* pText2User, const CFX_Matrix* pUser2Device, const CFX_GraphStateData* pGraphState, FX_ARGB fill_argb, FX_ARGB stroke_argb, CFX_PathData* pClippingPath, int nFlag = 0); static FX_BOOL DrawNormalText(CFX_RenderDevice* pDevice, int nChars, FX_DWORD* pCharCodes, FX_FLOAT* pCharPos, CPDF_Font* pFont, FX_FLOAT font_size, const CFX_Matrix* pText2Device, FX_ARGB fill_argb, const CPDF_RenderOptions* pOptions); static FX_BOOL DrawType3Text(CFX_RenderDevice* pDevice, int nChars, FX_DWORD* pCharCodes, FX_FLOAT* pCharPos, CPDF_Font* pFont, FX_FLOAT font_size, const CFX_Matrix* pText2Device, FX_ARGB fill_argb); }; class CPDF_PageRenderCache { public: explicit CPDF_PageRenderCache(CPDF_Page* pPage) : m_pPage(pPage), m_pCurImageCacheEntry(nullptr), m_nTimeCount(0), m_nCacheSize(0), m_bCurFindCache(FALSE) {} ~CPDF_PageRenderCache(); void ClearImageData(); FX_DWORD EstimateSize(); void CacheOptimization(int32_t dwLimitCacheSize); FX_DWORD GetTimeCount() const { return m_nTimeCount; } void SetTimeCount(FX_DWORD dwTimeCount) { m_nTimeCount = dwTimeCount; } void GetCachedBitmap(CPDF_Stream* pStream, CFX_DIBSource*& pBitmap, CFX_DIBSource*& pMask, FX_DWORD& MatteColor, FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0, FX_BOOL bLoadMask = FALSE, CPDF_RenderStatus* pRenderStatus = NULL, int32_t downsampleWidth = 0, int32_t downsampleHeight = 0); void ResetBitmap(CPDF_Stream* pStream, const CFX_DIBitmap* pBitmap); void ClearImageCacheEntry(CPDF_Stream* pStream); CPDF_Page* GetPage() const { return m_pPage; } CPDF_ImageCacheEntry* GetCurImageCacheEntry() const { return m_pCurImageCacheEntry; } FX_BOOL StartGetCachedBitmap(CPDF_Stream* pStream, FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0, FX_BOOL bLoadMask = FALSE, CPDF_RenderStatus* pRenderStatus = NULL, int32_t downsampleWidth = 0, int32_t downsampleHeight = 0); FX_BOOL Continue(IFX_Pause* pPause); protected: friend class CPDF_Page; CPDF_Page* const m_pPage; CPDF_ImageCacheEntry* m_pCurImageCacheEntry; std::map<CPDF_Stream*, CPDF_ImageCacheEntry*> m_ImageCache; FX_DWORD m_nTimeCount; FX_DWORD m_nCacheSize; FX_BOOL m_bCurFindCache; }; FX_BOOL IsAvailableMatrix(const CFX_Matrix& matrix); #endif // CORE_INCLUDE_FPDFAPI_FPDF_RENDER_H_