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 _FPDF_RENDER_ 8 #define _FPDF_RENDER_ 9 #ifndef _FPDF_PAGE_ 10 #include "fpdf_page.h" 11 #endif 12 #ifndef _FX_GE_H_ 13 #include "../fxge/fx_ge.h" 14 #endif 15 class CPDF_RenderContext; 16 class CPDF_RenderOptions; 17 class CPDF_ImageCache; 18 class IPDF_OCContext; 19 class CPDF_QuickStretcher; 20 class CFX_PathData; 21 class CFX_GraphStateData; 22 class CFX_RenderDevice; 23 class CPDF_TextObject; 24 class CPDF_PathObject; 25 class CPDF_ImageObject; 26 class CPDF_ShadingObject; 27 class CPDF_FormObject; 28 class IPDF_OCContext 29 { 30 public: 31 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 : public CFX_Object 59 { 60 public: 61 62 CPDF_RenderOptions(); 63 64 int m_ColorMode; 65 66 FX_COLORREF m_BackColor; 67 68 FX_COLORREF m_ForeColor; 69 70 FX_DWORD m_Flags; 71 72 int m_Interpolation; 73 74 FX_DWORD m_AddFlags; 75 76 IPDF_OCContext* m_pOCContext; 77 78 FX_DWORD m_dwLimitCacheSize; 79 80 int m_HalftoneLimit; 81 82 FX_ARGB TranslateColor(FX_ARGB argb) const; 83 }; 84 class CPDF_RenderContext : public CFX_Object 85 { 86 public: 87 88 CPDF_RenderContext(); 89 90 void Create(CPDF_Page* pPage, FX_BOOL bFirstLayer = TRUE); 91 92 void Create(CPDF_Document* pDoc = NULL, CPDF_PageRenderCache* pPageCache = NULL, 93 CPDF_Dictionary* pPageResources = NULL, FX_BOOL bFirstLayer = TRUE); 94 95 ~CPDF_RenderContext(); 96 97 void Clear(); 98 99 void AppendObjectList(CPDF_PageObjects* pObjs, const CFX_AffineMatrix* pObject2Device); 100 101 void SetBackground(class IPDF_BackgroundDraw* pBackground); 102 103 void Render(CFX_RenderDevice* pDevice, const CPDF_RenderOptions* pOptions = NULL, 104 const CFX_AffineMatrix* pFinalMatrix = NULL); 105 106 void DrawObjectList(CFX_RenderDevice* pDevice, CPDF_PageObjects* pObjs, 107 const CFX_AffineMatrix* pObject2Device, const CPDF_RenderOptions* pOptions); 108 109 void GetBackground(CFX_DIBitmap* pBuffer, const CPDF_PageObject* pObj, 110 const CPDF_RenderOptions* pOptions, CFX_AffineMatrix* pFinalMatrix); 111 112 CPDF_PageRenderCache* GetPageCache() const 113 { 114 return m_pPageCache; 115 } 116 117 118 119 CPDF_Document* m_pDocument; 120 121 CPDF_Dictionary* m_pPageResources; 122 123 CPDF_PageRenderCache* m_pPageCache; 124 125 protected: 126 127 CFX_ArrayTemplate<struct _PDF_RenderItem> m_ContentList; 128 129 IPDF_BackgroundDraw* m_pBackgroundDraw; 130 131 FX_BOOL m_bFirstLayer; 132 133 void Render(CFX_RenderDevice* pDevice, const CPDF_PageObject* pStopObj, 134 const CPDF_RenderOptions* pOptions, const CFX_AffineMatrix* pFinalMatrix); 135 friend class CPDF_RenderStatus; 136 friend class CPDF_ProgressiveRenderer; 137 }; 138 class IPDF_BackgroundDraw 139 { 140 public: 141 142 virtual void OnDrawBackground( 143 CFX_RenderDevice* pBitmapDevice, 144 const CFX_AffineMatrix* pOriginal2Bitmap 145 ) = 0; 146 }; 147 class CPDF_ProgressiveRenderer : public CFX_Object 148 { 149 public: 150 151 CPDF_ProgressiveRenderer(); 152 153 ~CPDF_ProgressiveRenderer(); 154 155 typedef enum { 156 Ready, 157 ToBeContinued, 158 Done, 159 Failed 160 } RenderStatus; 161 162 RenderStatus GetStatus() 163 { 164 return m_Status; 165 } 166 167 168 169 void Start(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice, 170 const CPDF_RenderOptions* pOptions, class IFX_Pause* pPause, FX_BOOL bDropObjects = FALSE); 171 172 void Continue(class IFX_Pause* pPause); 173 174 175 int EstimateProgress(); 176 177 void Clear(); 178 protected: 179 180 RenderStatus m_Status; 181 182 CPDF_RenderContext* m_pContext; 183 184 CFX_RenderDevice* m_pDevice; 185 186 const CPDF_RenderOptions* m_pOptions; 187 188 FX_BOOL m_bDropObjects; 189 190 class CPDF_RenderStatus* m_pRenderer; 191 192 CFX_FloatRect m_ClipRect; 193 194 FX_DWORD m_LayerIndex; 195 196 FX_DWORD m_ObjectIndex; 197 198 FX_POSITION m_ObjectPos; 199 200 FX_POSITION m_PrevLastPos; 201 202 void RenderStep(); 203 }; 204 class CPDF_TextRenderer : public CFX_Object 205 { 206 public: 207 208 static void DrawTextString(CFX_RenderDevice* pDevice, int left, int top, 209 CPDF_Font* pFont, 210 int height, 211 const CFX_ByteString& str, 212 FX_ARGB argb); 213 214 static void DrawTextString(CFX_RenderDevice* pDevice, FX_FLOAT origin_x, FX_FLOAT origin_y, 215 CPDF_Font* pFont, 216 FX_FLOAT font_size, 217 const CFX_AffineMatrix* matrix, 218 const CFX_ByteString& str, 219 FX_ARGB fill_argb, 220 FX_ARGB stroke_argb = 0, 221 const CFX_GraphStateData* pGraphState = NULL, 222 const CPDF_RenderOptions* pOptions = NULL 223 ); 224 225 static FX_BOOL DrawTextPath(CFX_RenderDevice* pDevice, int nChars, FX_DWORD* pCharCodes, FX_FLOAT* pCharPos, 226 CPDF_Font* pFont, FX_FLOAT font_size, 227 const CFX_AffineMatrix* pText2User, const CFX_AffineMatrix* pUser2Device, 228 const CFX_GraphStateData* pGraphState, 229 FX_ARGB fill_argb, FX_ARGB stroke_argb, CFX_PathData* pClippingPath, int nFlag = 0); 230 231 static FX_BOOL DrawNormalText(CFX_RenderDevice* pDevice, int nChars, FX_DWORD* pCharCodes, FX_FLOAT* pCharPos, 232 CPDF_Font* pFont, FX_FLOAT font_size, const CFX_AffineMatrix* pText2Device, 233 FX_ARGB fill_argb, const CPDF_RenderOptions* pOptions); 234 235 static FX_BOOL DrawType3Text(CFX_RenderDevice* pDevice, int nChars, FX_DWORD* pCharCodes, FX_FLOAT* pCharPos, 236 CPDF_Font* pFont, FX_FLOAT font_size, const CFX_AffineMatrix* pText2Device, 237 FX_ARGB fill_argb); 238 }; 239 class IPDF_PageImageCache 240 { 241 public: 242 243 static IPDF_PageImageCache* Create(); 244 245 virtual ~IPDF_PageImageCache() {} 246 247 virtual void OutputPage(CFX_RenderDevice* pDevice, CPDF_Page* pPage, 248 int pos_x, int pos_y, int size_x, int size_y, int rotate) = 0; 249 250 virtual void SetCacheLimit(FX_DWORD limit) = 0; 251 }; 252 class CPDF_PageRenderCache : public CFX_Object 253 { 254 public: 255 CPDF_PageRenderCache(CPDF_Page* pPage) 256 { 257 m_pPage = pPage; 258 m_nTimeCount = 0; 259 m_nCacheSize = 0; 260 m_pCurImageCache = NULL; 261 m_bCurFindCache = FALSE; 262 m_pCurImageCaches = NULL; 263 } 264 ~CPDF_PageRenderCache() 265 { 266 ClearAll(); 267 } 268 void ClearAll(); 269 void ClearImageData(); 270 271 FX_DWORD EstimateSize(); 272 void CacheOptimization(FX_INT32 dwLimitCacheSize); 273 FX_DWORD GetCachedSize(CPDF_Stream* pStream) const; 274 FX_DWORD GetTimeCount() const 275 { 276 return m_nTimeCount; 277 } 278 void SetTimeCount(FX_DWORD dwTimeCount) 279 { 280 m_nTimeCount = dwTimeCount; 281 } 282 283 void GetCachedBitmap(CPDF_Stream* pStream, CFX_DIBSource*& pBitmap, CFX_DIBSource*& pMask, FX_DWORD& MatteColor, 284 FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0, FX_BOOL bLoadMask = FALSE, 285 CPDF_RenderStatus* pRenderStatus = NULL, FX_INT32 downsampleWidth = 0, FX_INT32 downsampleHeight = 0); 286 287 void ResetBitmap(CPDF_Stream* pStream, const CFX_DIBitmap* pBitmap); 288 void ClearImageCache(CPDF_Stream* pStream); 289 CPDF_Page* GetPage() 290 { 291 return m_pPage; 292 } 293 CFX_MapPtrToPtr m_ImageCaches; 294 public: 295 FX_BOOL StartGetCachedBitmap(CPDF_Stream* pStream, FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0, 296 FX_BOOL bLoadMask = FALSE, CPDF_RenderStatus* pRenderStatus = NULL, 297 FX_INT32 downsampleWidth = 0, FX_INT32 downsampleHeight = 0); 298 299 FX_BOOL Continue(IFX_Pause* pPause); 300 CPDF_ImageCache* m_pCurImageCache; 301 CFX_PtrArray* m_pCurImageCaches; 302 protected: 303 friend class CPDF_Page; 304 CPDF_Page* m_pPage; 305 306 FX_DWORD m_nTimeCount; 307 FX_DWORD m_nCacheSize; 308 FX_BOOL m_bCurFindCache; 309 }; 310 class CPDF_RenderConfig : public CFX_Object 311 { 312 public: 313 CPDF_RenderConfig(); 314 ~CPDF_RenderConfig(); 315 int m_HalftoneLimit; 316 int m_RenderStepLimit; 317 }; 318 #endif 319
