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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 rendering_buffer | |
| 18 // | |
| 19 //---------------------------------------------------------------------------- | |
| 20 #ifndef AGG_RENDERING_BUFFER_INCLUDED | |
| 21 #define AGG_RENDERING_BUFFER_INCLUDED | |
| 22 #include "agg_basics.h" | |
| 23 namespace agg | |
| 24 { | |
| 25 class rendering_buffer : public CFX_Object | |
| 26 { | |
| 27 public: | |
| 28 struct row_data : public CFX_Object { | |
| 29 int x1, x2; | |
| 30 const int8u* ptr; | |
| 31 row_data() {} | |
| 32 row_data(int x1_, int x2_, const int8u* ptr_) : | |
| 33 x1(x1_), x2(x2_), ptr(ptr_) {} | |
| 34 }; | |
| 35 struct span_data : public CFX_Object { | |
| 36 int x; | |
| 37 unsigned len; | |
| 38 int8u* ptr; | |
| 39 span_data() {} | |
| 40 span_data(int) : x(0), len(0), ptr(0) {} | |
| 41 span_data(int x_, unsigned len_, int8u* ptr_) : | |
| 42 x(x_), len(len_), ptr(ptr_) {} | |
| 43 }; | |
| 44 ~rendering_buffer() | |
| 45 { | |
| 46 FX_Free(m_rows); | |
| 47 } | |
| 48 rendering_buffer() : | |
| 49 m_buf(0), | |
| 50 m_rows(0), | |
| 51 m_width(0), | |
| 52 m_height(0), | |
| 53 m_stride(0), | |
| 54 m_max_height(0) | |
| 55 { | |
| 56 } | |
| 57 rendering_buffer(int8u* buf, unsigned width, unsigned height, int stride) : | |
| 58 m_buf(0), | |
| 59 m_rows(0), | |
| 60 m_width(0), | |
| 61 m_height(0), | |
| 62 m_stride(0), | |
| 63 m_max_height(0) | |
| 64 { | |
| 65 attach(buf, width, height, stride); | |
| 66 } | |
| 67 void attach(int8u* buf, unsigned width, unsigned height, int stride) | |
| 68 { | |
| 69 m_buf = buf; | |
| 70 m_width = width; | |
| 71 m_height = height; | |
| 72 m_stride = stride; | |
| 73 if(height > m_max_height) { | |
| 74 FX_Free(m_rows); | |
| 75 m_rows = FX_Alloc(int8u*, m_max_height = height); | |
| 76 } | |
| 77 int8u* row_ptr = m_buf; | |
| 78 if(stride < 0) { | |
| 79 row_ptr = m_buf - int(height - 1) * stride; | |
| 80 } | |
| 81 int8u** rows = m_rows; | |
| 82 while(height--) { | |
| 83 *rows++ = row_ptr; | |
| 84 row_ptr += stride; | |
| 85 } | |
| 86 } | |
| 87 int8u* buf() | |
| 88 { | |
| 89 return m_buf; | |
| 90 } | |
| 91 const int8u* buf() const | |
| 92 { | |
| 93 return m_buf; | |
| 94 } | |
| 95 unsigned width() const | |
| 96 { | |
| 97 return m_width; | |
| 98 } | |
| 99 unsigned height() const | |
| 100 { | |
| 101 return m_height; | |
| 102 } | |
| 103 int stride() const | |
| 104 { | |
| 105 return m_stride; | |
| 106 } | |
| 107 unsigned stride_abs() const | |
| 108 { | |
| 109 return (m_stride < 0) ? | |
| 110 unsigned(-m_stride) : | |
| 111 unsigned(m_stride); | |
| 112 } | |
| 113 int8u* row(unsigned y) | |
| 114 { | |
| 115 return m_rows[y]; | |
| 116 } | |
| 117 const int8u* row(unsigned y) const | |
| 118 { | |
| 119 return m_rows[y]; | |
| 120 } | |
| 121 int8u* next_row(void* p) | |
| 122 { | |
| 123 return (int8u*)p + m_stride; | |
| 124 } | |
| 125 const int8u* next_row(const void* p) const | |
| 126 { | |
| 127 return (int8u*)p + m_stride; | |
| 128 } | |
| 129 int8u const* const* rows() const | |
| 130 { | |
| 131 return m_rows; | |
| 132 } | |
| 133 private: | |
| 134 rendering_buffer(const rendering_buffer&); | |
| 135 const rendering_buffer& operator = (const rendering_buffer&); | |
| 136 private: | |
| 137 int8u* m_buf; | |
| 138 int8u** m_rows; | |
| 139 unsigned m_width; | |
| 140 unsigned m_height; | |
| 141 int m_stride; | |
| 142 unsigned m_max_height; | |
| 143 }; | |
| 144 } | |
| 145 #endif | |
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Chromium Code Reviews
Issue 402463002:
Replace agg with skia (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master