1 // Copyright 2017 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_FXGE_DIB_CFX_DIBITMAP_H_ 8 #define CORE_FXGE_DIB_CFX_DIBITMAP_H_ 9 10 #include "core/fxcrt/fx_coordinates.h" 11 #include "core/fxcrt/maybe_owned.h" 12 #include "core/fxcrt/retain_ptr.h" 13 #include "core/fxge/dib/cfx_dibsource.h" 14 #include "third_party/base/stl_util.h" 15 16 class CFX_DIBitmap : public CFX_DIBSource { 17 public: 18 template <typename T, typename... Args> 19 friend RetainPtr<T> pdfium::MakeRetain(Args&&... args); 20 21 ~CFX_DIBitmap() override; 22 23 bool Create(int width, 24 int height, 25 FXDIB_Format format, 26 uint8_t* pBuffer = nullptr, 27 uint32_t pitch = 0); 28 29 bool Copy(const RetainPtr<CFX_DIBSource>& pSrc); 30 31 // CFX_DIBSource 32 uint8_t* GetBuffer() const override; 33 const uint8_t* GetScanline(int line) const override; 34 void DownSampleScanline(int line, 35 uint8_t* dest_scan, 36 int dest_bpp, 37 int dest_width, 38 bool bFlipX, 39 int clip_left, 40 int clip_width) const override; 41 42 void TakeOver(RetainPtr<CFX_DIBitmap>&& pSrcBitmap); 43 bool ConvertFormat(FXDIB_Format format); 44 void Clear(uint32_t color); 45 46 uint32_t GetPixel(int x, int y) const; 47 void SetPixel(int x, int y, uint32_t color); 48 49 bool LoadChannel(FXDIB_Channel destChannel, 50 const RetainPtr<CFX_DIBSource>& pSrcBitmap, 51 FXDIB_Channel srcChannel); 52 bool LoadChannel(FXDIB_Channel destChannel, int value); 53 54 bool MultiplyAlpha(int alpha); 55 bool MultiplyAlpha(const RetainPtr<CFX_DIBSource>& pAlphaMask); 56 57 bool TransferBitmap(int dest_left, 58 int dest_top, 59 int width, 60 int height, 61 const RetainPtr<CFX_DIBSource>& pSrcBitmap, 62 int src_left, 63 int src_top); 64 65 bool CompositeBitmap(int dest_left, 66 int dest_top, 67 int width, 68 int height, 69 const RetainPtr<CFX_DIBSource>& pSrcBitmap, 70 int src_left, 71 int src_top, 72 int blend_type = FXDIB_BLEND_NORMAL, 73 const CFX_ClipRgn* pClipRgn = nullptr, 74 bool bRgbByteOrder = false); 75 76 bool CompositeMask(int dest_left, 77 int dest_top, 78 int width, 79 int height, 80 const RetainPtr<CFX_DIBSource>& pMask, 81 uint32_t color, 82 int src_left, 83 int src_top, 84 int blend_type = FXDIB_BLEND_NORMAL, 85 const CFX_ClipRgn* pClipRgn = nullptr, 86 bool bRgbByteOrder = false, 87 int alpha_flag = 0); 88 89 bool CompositeRect(int dest_left, 90 int dest_top, 91 int width, 92 int height, 93 uint32_t color, 94 int alpha_flag); 95 96 bool ConvertColorScale(uint32_t forecolor, uint32_t backcolor); 97 98 static bool CalculatePitchAndSize(int height, 99 int width, 100 FXDIB_Format format, 101 uint32_t* pitch, 102 uint32_t* size); 103 104 #if defined _SKIA_SUPPORT_ || _SKIA_SUPPORT_PATHS_ 105 void PreMultiply(); 106 #endif 107 #if defined _SKIA_SUPPORT_PATHS_ 108 void UnPreMultiply(); 109 #endif 110 111 protected: 112 CFX_DIBitmap(); 113 CFX_DIBitmap(const CFX_DIBitmap& src); 114 115 #if defined _SKIA_SUPPORT_PATHS_ 116 enum class Format { kCleared, kPreMultiplied, kUnPreMultiplied }; 117 #endif 118 119 MaybeOwned<uint8_t, FxFreeDeleter> m_pBuffer; 120 #if defined _SKIA_SUPPORT_PATHS_ 121 Format m_nFormat; 122 #endif 123 124 private: 125 void ConvertRGBColorScale(uint32_t forecolor, uint32_t backcolor); 126 void ConvertCMYKColorScale(uint32_t forecolor, uint32_t backcolor); 127 }; 128 129 #endif // CORE_FXGE_DIB_CFX_DIBITMAP_H_ 130
