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| 1 | |
| 2 //---------------------------------------------------------------------------- | |
| 3 // Anti-Grain Geometry - Version 2.3 | |
| 4 // Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com) | |
| 5 // | |
| 6 // Permission to copy, use, modify, sell and distribute this software | |
| 7 // is granted provided this copyright notice appears in all copies. | |
| 8 // This software is provided "as is" without express or implied | |
| 9 // warranty, and with no claim as to its suitability for any purpose. | |
| 10 // | |
| 11 //---------------------------------------------------------------------------- | |
| 12 // Contact: mcseem@antigrain.com | |
| 13 // mcseemagg@yahoo.com | |
| 14 // http://www.antigrain.com | |
| 15 //---------------------------------------------------------------------------- | |
| 16 // | |
| 17 // class renderer_base | |
| 18 // | |
| 19 //---------------------------------------------------------------------------- | |
| 20 #ifndef AGG_RENDERER_BASE_INCLUDED | |
| 21 #define AGG_RENDERER_BASE_INCLUDED | |
| 22 #include "agg_basics.h" | |
| 23 #include "agg_rendering_buffer.h" | |
| 24 namespace agg | |
| 25 { | |
| 26 template<class PixelFormat> class renderer_base : public CFX_Object | |
| 27 { | |
| 28 public: | |
| 29 typedef PixelFormat pixfmt_type; | |
| 30 typedef typename pixfmt_type::color_type color_type; | |
| 31 typedef typename pixfmt_type::row_data row_data; | |
| 32 typedef typename pixfmt_type::span_data span_data; | |
| 33 renderer_base() : m_ren(0), m_clip_box(1, 1, 0, 0) {} | |
| 34 renderer_base(pixfmt_type& ren) : | |
| 35 m_ren(&ren), | |
| 36 m_clip_box(0, 0, ren.width() - 1, ren.height() - 1) | |
| 37 {} | |
| 38 void attach(pixfmt_type& ren) | |
| 39 { | |
| 40 m_ren = &ren; | |
| 41 m_clip_box = rect(0, 0, ren.width() - 1, ren.height() - 1); | |
| 42 } | |
| 43 const pixfmt_type& ren() const | |
| 44 { | |
| 45 return *m_ren; | |
| 46 } | |
| 47 pixfmt_type& ren() | |
| 48 { | |
| 49 return *m_ren; | |
| 50 } | |
| 51 unsigned width() const | |
| 52 { | |
| 53 return m_ren->width(); | |
| 54 } | |
| 55 unsigned height() const | |
| 56 { | |
| 57 return m_ren->height(); | |
| 58 } | |
| 59 void first_clip_box() {} | |
| 60 bool next_clip_box() | |
| 61 { | |
| 62 return false; | |
| 63 } | |
| 64 const rect& clip_box() const | |
| 65 { | |
| 66 return m_clip_box; | |
| 67 } | |
| 68 int xmin() const | |
| 69 { | |
| 70 return m_clip_box.x1; | |
| 71 } | |
| 72 int ymin() const | |
| 73 { | |
| 74 return m_clip_box.y1; | |
| 75 } | |
| 76 int xmax() const | |
| 77 { | |
| 78 return m_clip_box.x2; | |
| 79 } | |
| 80 int ymax() const | |
| 81 { | |
| 82 return m_clip_box.y2; | |
| 83 } | |
| 84 const rect& bounding_clip_box() const | |
| 85 { | |
| 86 return m_clip_box; | |
| 87 } | |
| 88 int bounding_xmin() const | |
| 89 { | |
| 90 return m_clip_box.x1; | |
| 91 } | |
| 92 int bounding_ymin() const | |
| 93 { | |
| 94 return m_clip_box.y1; | |
| 95 } | |
| 96 int bounding_xmax() const | |
| 97 { | |
| 98 return m_clip_box.x2; | |
| 99 } | |
| 100 int bounding_ymax() const | |
| 101 { | |
| 102 return m_clip_box.y2; | |
| 103 } | |
| 104 void blend_hline(int x1, int y, int x2, | |
| 105 const color_type& c, cover_type cover) | |
| 106 { | |
| 107 if(x1 > x2) { | |
| 108 int t = x2; | |
| 109 x2 = x1; | |
| 110 x1 = t; | |
| 111 } | |
| 112 if(y > ymax()) { | |
| 113 return; | |
| 114 } | |
| 115 if(y < ymin()) { | |
| 116 return; | |
| 117 } | |
| 118 if(x1 > xmax()) { | |
| 119 return; | |
| 120 } | |
| 121 if(x2 < xmin()) { | |
| 122 return; | |
| 123 } | |
| 124 if(x1 < xmin()) { | |
| 125 x1 = xmin(); | |
| 126 } | |
| 127 if(x2 > xmax()) { | |
| 128 x2 = xmax(); | |
| 129 } | |
| 130 m_ren->blend_hline(x1, y, x2 - x1 + 1, c, cover); | |
| 131 } | |
| 132 void blend_solid_hspan(int x, int y, int len, | |
| 133 const color_type& c, | |
| 134 const cover_type* covers) | |
| 135 { | |
| 136 if(y > ymax()) { | |
| 137 return; | |
| 138 } | |
| 139 if(y < ymin()) { | |
| 140 return; | |
| 141 } | |
| 142 if(x < xmin()) { | |
| 143 len -= xmin() - x; | |
| 144 if(len <= 0) { | |
| 145 return; | |
| 146 } | |
| 147 covers += xmin() - x; | |
| 148 x = xmin(); | |
| 149 } | |
| 150 if(x + len > xmax()) { | |
| 151 len = xmax() - x + 1; | |
| 152 if(len <= 0) { | |
| 153 return; | |
| 154 } | |
| 155 } | |
| 156 m_ren->blend_solid_hspan(x, y, len, c, covers); | |
| 157 } | |
| 158 private: | |
| 159 pixfmt_type* m_ren; | |
| 160 rect m_clip_box; | |
| 161 }; | |
| 162 } | |
| 163 #endif | |
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Chromium Code Reviews
Issue 402463002:
Replace agg with skia (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master