1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_INCLUDE_FPDFAPI_FPDF_RENDER_H_ 8 #define CORE_INCLUDE_FPDFAPI_FPDF_RENDER_H_ 9 10 #include <map> 11 #include <memory> 12 13 #include "core/include/fpdfapi/fpdf_page.h" 14 #include "core/include/fxge/fx_ge.h" 15 16 class CFX_GraphStateData; 17 class CFX_PathData; 18 class CFX_RenderDevice; 19 class CPDF_FormObject; 20 class CPDF_ImageCacheEntry; 21 class CPDF_ImageObject; 22 class CPDF_PathObject; 23 class CPDF_RenderContext; 24 class CPDF_RenderOptions; 25 class CPDF_RenderStatus; 26 class CPDF_ShadingObject; 27 class CPDF_TextObject; 28 class IFX_Pause; 29 30 class IPDF_OCContext { 31 public: 32 virtual ~IPDF_OCContext() {} 33 34 virtual FX_BOOL CheckOCGVisible(const CPDF_Dictionary* pOCG) = 0; 35 36 FX_BOOL CheckObjectVisible(const CPDF_PageObject* pObj); 37 }; 38 #define RENDER_COLOR_NORMAL 0 39 #define RENDER_COLOR_GRAY 1 40 #define RENDER_COLOR_TWOCOLOR 2 41 #define RENDER_COLOR_ALPHA 3 42 #define RENDER_CLEARTYPE 0x00000001 43 #define RENDER_PRINTGRAPHICTEXT 0x00000002 44 #define RENDER_FORCE_DOWNSAMPLE 0x00000004 45 #define RENDER_PRINTPREVIEW 0x00000008 46 #define RENDER_BGR_STRIPE 0x00000010 47 #define RENDER_NO_NATIVETEXT 0x00000020 48 #define RENDER_FORCE_HALFTONE 0x00000040 49 #define RENDER_RECT_AA 0x00000080 50 #define RENDER_FILL_FULLCOVER 0x00000100 51 #define RENDER_PRINTIMAGETEXT 0x00000200 52 #define RENDER_OVERPRINT 0x00000400 53 #define RENDER_THINLINE 0x00000800 54 #define RENDER_NOTEXTSMOOTH 0x10000000 55 #define RENDER_NOPATHSMOOTH 0x20000000 56 #define RENDER_NOIMAGESMOOTH 0x40000000 57 #define RENDER_LIMITEDIMAGECACHE 0x80000000 58 class CPDF_RenderOptions { 59 public: 60 CPDF_RenderOptions(); 61 62 int m_ColorMode; 63 64 FX_COLORREF m_BackColor; 65 66 FX_COLORREF m_ForeColor; 67 68 FX_DWORD m_Flags; 69 70 int m_Interpolation; 71 72 FX_DWORD m_AddFlags; 73 74 IPDF_OCContext* m_pOCContext; 75 76 FX_DWORD m_dwLimitCacheSize; 77 78 int m_HalftoneLimit; 79 80 FX_ARGB TranslateColor(FX_ARGB argb) const; 81 }; 82 class CPDF_RenderContext { 83 public: 84 explicit CPDF_RenderContext(CPDF_Page* pPage); 85 CPDF_RenderContext(CPDF_Document* pDoc, CPDF_PageRenderCache* pPageCache); 86 ~CPDF_RenderContext(); 87 88 void AppendObjectList(CPDF_PageObjects* pObjs, 89 const CFX_Matrix* pObject2Device); 90 91 void Render(CFX_RenderDevice* pDevice, 92 const CPDF_RenderOptions* pOptions = NULL, 93 const CFX_Matrix* pFinalMatrix = NULL); 94 95 void DrawObjectList(CFX_RenderDevice* pDevice, 96 CPDF_PageObjects* pObjs, 97 const CFX_Matrix* pObject2Device, 98 const CPDF_RenderOptions* pOptions); 99 100 void GetBackground(CFX_DIBitmap* pBuffer, 101 const CPDF_PageObject* pObj, 102 const CPDF_RenderOptions* pOptions, 103 CFX_Matrix* pFinalMatrix); 104 105 CPDF_PageRenderCache* GetPageCache() const { return m_pPageCache; } 106 107 protected: 108 void Render(CFX_RenderDevice* pDevice, 109 const CPDF_PageObject* pStopObj, 110 const CPDF_RenderOptions* pOptions, 111 const CFX_Matrix* pFinalMatrix); 112 113 CPDF_Document* const m_pDocument; 114 CPDF_Dictionary* m_pPageResources; 115 CPDF_PageRenderCache* m_pPageCache; 116 CFX_ArrayTemplate<struct _PDF_RenderItem> m_ContentList; 117 FX_BOOL m_bFirstLayer; 118 119 friend class CPDF_RenderStatus; 120 friend class CPDF_ProgressiveRenderer; 121 }; 122 123 class CPDF_ProgressiveRenderer { 124 public: 125 // Must match FDF_RENDER_* definitions in public/fpdf_progressive.h, but 126 // cannot #include that header. fpdfsdk/src/fpdf_progressive.cpp has 127 // static_asserts to make sure the two sets of values match. 128 enum Status { 129 Ready, // FPDF_RENDER_READER 130 ToBeContinued, // FPDF_RENDER_TOBECOUNTINUED 131 Done, // FPDF_RENDER_DONE 132 Failed // FPDF_RENDER_FAILED 133 }; 134 135 static int ToFPDFStatus(Status status) { return static_cast<int>(status); } 136 137 CPDF_ProgressiveRenderer(CPDF_RenderContext* pContext, 138 CFX_RenderDevice* pDevice, 139 const CPDF_RenderOptions* pOptions); 140 ~CPDF_ProgressiveRenderer(); 141 142 Status GetStatus() const { return m_Status; } 143 void Start(IFX_Pause* pPause); 144 void Continue(IFX_Pause* pPause); 145 int EstimateProgress(); 146 147 private: 148 void RenderStep(); 149 150 Status m_Status; 151 CPDF_RenderContext* const m_pContext; 152 CFX_RenderDevice* const m_pDevice; 153 const CPDF_RenderOptions* const m_pOptions; 154 std::unique_ptr<CPDF_RenderStatus> m_pRenderStatus; 155 CFX_FloatRect m_ClipRect; 156 FX_DWORD m_LayerIndex; 157 FX_DWORD m_ObjectIndex; 158 FX_POSITION m_ObjectPos; 159 FX_POSITION m_PrevLastPos; 160 }; 161 162 class CPDF_TextRenderer { 163 public: 164 static void DrawTextString(CFX_RenderDevice* pDevice, 165 int left, 166 int top, 167 CPDF_Font* pFont, 168 int height, 169 const CFX_ByteString& str, 170 FX_ARGB argb); 171 172 static void DrawTextString(CFX_RenderDevice* pDevice, 173 FX_FLOAT origin_x, 174 FX_FLOAT origin_y, 175 CPDF_Font* pFont, 176 FX_FLOAT font_size, 177 const CFX_Matrix* matrix, 178 const CFX_ByteString& str, 179 FX_ARGB fill_argb, 180 FX_ARGB stroke_argb = 0, 181 const CFX_GraphStateData* pGraphState = NULL, 182 const CPDF_RenderOptions* pOptions = NULL); 183 184 static FX_BOOL DrawTextPath(CFX_RenderDevice* pDevice, 185 int nChars, 186 FX_DWORD* pCharCodes, 187 FX_FLOAT* pCharPos, 188 CPDF_Font* pFont, 189 FX_FLOAT font_size, 190 const CFX_Matrix* pText2User, 191 const CFX_Matrix* pUser2Device, 192 const CFX_GraphStateData* pGraphState, 193 FX_ARGB fill_argb, 194 FX_ARGB stroke_argb, 195 CFX_PathData* pClippingPath, 196 int nFlag = 0); 197 198 static FX_BOOL DrawNormalText(CFX_RenderDevice* pDevice, 199 int nChars, 200 FX_DWORD* pCharCodes, 201 FX_FLOAT* pCharPos, 202 CPDF_Font* pFont, 203 FX_FLOAT font_size, 204 const CFX_Matrix* pText2Device, 205 FX_ARGB fill_argb, 206 const CPDF_RenderOptions* pOptions); 207 208 static FX_BOOL DrawType3Text(CFX_RenderDevice* pDevice, 209 int nChars, 210 FX_DWORD* pCharCodes, 211 FX_FLOAT* pCharPos, 212 CPDF_Font* pFont, 213 FX_FLOAT font_size, 214 const CFX_Matrix* pText2Device, 215 FX_ARGB fill_argb); 216 }; 217 class CPDF_PageRenderCache { 218 public: 219 explicit CPDF_PageRenderCache(CPDF_Page* pPage) 220 : m_pPage(pPage), 221 m_pCurImageCacheEntry(nullptr), 222 m_nTimeCount(0), 223 m_nCacheSize(0), 224 m_bCurFindCache(FALSE) {} 225 ~CPDF_PageRenderCache(); 226 void ClearImageData(); 227 228 FX_DWORD EstimateSize(); 229 void CacheOptimization(int32_t dwLimitCacheSize); 230 FX_DWORD GetTimeCount() const { return m_nTimeCount; } 231 void SetTimeCount(FX_DWORD dwTimeCount) { m_nTimeCount = dwTimeCount; } 232 233 void GetCachedBitmap(CPDF_Stream* pStream, 234 CFX_DIBSource*& pBitmap, 235 CFX_DIBSource*& pMask, 236 FX_DWORD& MatteColor, 237 FX_BOOL bStdCS = FALSE, 238 FX_DWORD GroupFamily = 0, 239 FX_BOOL bLoadMask = FALSE, 240 CPDF_RenderStatus* pRenderStatus = NULL, 241 int32_t downsampleWidth = 0, 242 int32_t downsampleHeight = 0); 243 244 void ResetBitmap(CPDF_Stream* pStream, const CFX_DIBitmap* pBitmap); 245 void ClearImageCacheEntry(CPDF_Stream* pStream); 246 CPDF_Page* GetPage() const { return m_pPage; } 247 CPDF_ImageCacheEntry* GetCurImageCacheEntry() const { 248 return m_pCurImageCacheEntry; 249 } 250 251 FX_BOOL StartGetCachedBitmap(CPDF_Stream* pStream, 252 FX_BOOL bStdCS = FALSE, 253 FX_DWORD GroupFamily = 0, 254 FX_BOOL bLoadMask = FALSE, 255 CPDF_RenderStatus* pRenderStatus = NULL, 256 int32_t downsampleWidth = 0, 257 int32_t downsampleHeight = 0); 258 259 FX_BOOL Continue(IFX_Pause* pPause); 260 261 protected: 262 friend class CPDF_Page; 263 CPDF_Page* const m_pPage; 264 CPDF_ImageCacheEntry* m_pCurImageCacheEntry; 265 std::map<CPDF_Stream*, CPDF_ImageCacheEntry*> m_ImageCache; 266 FX_DWORD m_nTimeCount; 267 FX_DWORD m_nCacheSize; 268 FX_BOOL m_bCurFindCache; 269 }; 270 class CPDF_RenderConfig { 271 public: 272 CPDF_RenderConfig(); 273 ~CPDF_RenderConfig(); 274 int m_HalftoneLimit; 275 int m_RenderStepLimit; 276 }; 277 278 FX_BOOL IsAvailableMatrix(const CFX_Matrix& matrix); 279 280 #endif // CORE_INCLUDE_FPDFAPI_FPDF_RENDER_H_ 281
