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_FXGE_FX_DIB_H_
8 #define CORE_FXGE_FX_DIB_H_
9
10 #include <tuple>
11 #include <utility>
12
13 #include "core/fxcrt/fx_coordinates.h"
14 #include "core/fxcrt/widestring.h"
15
16 enum FXDIB_Format {
17 FXDIB_Invalid = 0,
18 FXDIB_1bppRgb = 0x001,
19 FXDIB_8bppRgb = 0x008,
20 FXDIB_Rgb = 0x018,
21 FXDIB_Rgb32 = 0x020,
22 FXDIB_1bppMask = 0x101,
23 FXDIB_8bppMask = 0x108,
24 FXDIB_8bppRgba = 0x208,
25 FXDIB_Rgba = 0x218,
26 FXDIB_Argb = 0x220,
27 FXDIB_1bppCmyk = 0x401,
28 FXDIB_8bppCmyk = 0x408,
29 FXDIB_Cmyk = 0x420,
30 FXDIB_8bppCmyka = 0x608,
31 FXDIB_Cmyka = 0x620,
32 };
33
34 struct PixelWeight {
35 int m_SrcStart;
36 int m_SrcEnd;
37 int m_Weights[1];
38 };
39
40 typedef uint32_t FX_ARGB;
41 typedef uint32_t FX_COLORREF;
42 typedef uint32_t FX_CMYK;
43 class CFX_ClipRgn;
44 class CFX_DIBSource;
45 class CStretchEngine;
46
47 extern const int16_t SDP_Table[513];
48
49 #define FXDIB_DOWNSAMPLE 0x04
50 #define FXDIB_INTERPOL 0x20
51 #define FXDIB_BICUBIC_INTERPOL 0x80
52 #define FXDIB_NOSMOOTH 0x100
53
54 #define FXDIB_BLEND_NORMAL 0
55 #define FXDIB_BLEND_MULTIPLY 1
56 #define FXDIB_BLEND_SCREEN 2
57 #define FXDIB_BLEND_OVERLAY 3
58 #define FXDIB_BLEND_DARKEN 4
59 #define FXDIB_BLEND_LIGHTEN 5
60 #define FXDIB_BLEND_COLORDODGE 6
61 #define FXDIB_BLEND_COLORBURN 7
62 #define FXDIB_BLEND_HARDLIGHT 8
63 #define FXDIB_BLEND_SOFTLIGHT 9
64 #define FXDIB_BLEND_DIFFERENCE 10
65 #define FXDIB_BLEND_EXCLUSION 11
66 #define FXDIB_BLEND_NONSEPARABLE 21
67 #define FXDIB_BLEND_HUE 21
68 #define FXDIB_BLEND_SATURATION 22
69 #define FXDIB_BLEND_COLOR 23
70 #define FXDIB_BLEND_LUMINOSITY 24
71 #define FXDIB_BLEND_UNSUPPORTED -1
72
73 #define FXSYS_RGB(r, g, b) ((r) | ((g) << 8) | ((b) << 16))
74 #define FXSYS_GetRValue(rgb) ((rgb)&0xff)
75 #define FXSYS_GetGValue(rgb) (((rgb) >> 8) & 0xff)
76 #define FXSYS_GetBValue(rgb) (((rgb) >> 16) & 0xff)
77
78 #define FXSYS_GetCValue(cmyk) ((uint8_t)((cmyk) >> 24) & 0xff)
79 #define FXSYS_GetMValue(cmyk) ((uint8_t)((cmyk) >> 16) & 0xff)
80 #define FXSYS_GetYValue(cmyk) ((uint8_t)((cmyk) >> 8) & 0xff)
81 #define FXSYS_GetKValue(cmyk) ((uint8_t)(cmyk)&0xff)
82
CmykEncode(int c,int m,int y,int k)83 inline FX_CMYK CmykEncode(int c, int m, int y, int k) {
84 return (c << 24) | (m << 16) | (y << 8) | k;
85 }
86
87 // Returns tuple a, r, g, b
88 std::tuple<int, int, int, int> ArgbDecode(FX_ARGB argb);
89
90 // Returns pair a, rgb
91 std::pair<int, FX_COLORREF> ArgbToColorRef(FX_ARGB argb);
92
ArgbEncode(int a,int r,int g,int b)93 inline FX_ARGB ArgbEncode(int a, int r, int g, int b) {
94 return (a << 24) | (r << 16) | (g << 8) | b;
95 }
96 FX_ARGB ArgbEncode(int a, FX_COLORREF rgb);
97
98 FX_ARGB StringToFXARGB(const WideStringView& view);
99
100 #define FXARGB_A(argb) ((uint8_t)((argb) >> 24))
101 #define FXARGB_R(argb) ((uint8_t)((argb) >> 16))
102 #define FXARGB_G(argb) ((uint8_t)((argb) >> 8))
103 #define FXARGB_B(argb) ((uint8_t)(argb))
104 #define FXARGB_MAKE(a, r, g, b) \
105 (((uint32_t)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))
106 #define FXARGB_MUL_ALPHA(argb, alpha) \
107 (((((argb) >> 24) * (alpha) / 255) << 24) | ((argb)&0xffffff))
108
109 #define FXRGB2GRAY(r, g, b) (((b)*11 + (g)*59 + (r)*30) / 100)
110 #define FXDIB_ALPHA_MERGE(backdrop, source, source_alpha) \
111 (((backdrop) * (255 - (source_alpha)) + (source) * (source_alpha)) / 255)
112 #define FXARGB_GETDIB(p) \
113 ((((uint8_t*)(p))[0]) | (((uint8_t*)(p))[1] << 8) | \
114 (((uint8_t*)(p))[2] << 16) | (((uint8_t*)(p))[3] << 24))
115 #define FXARGB_SETDIB(p, argb) \
116 ((uint8_t*)(p))[0] = (uint8_t)(argb), \
117 ((uint8_t*)(p))[1] = (uint8_t)((argb) >> 8), \
118 ((uint8_t*)(p))[2] = (uint8_t)((argb) >> 16), \
119 ((uint8_t*)(p))[3] = (uint8_t)((argb) >> 24)
120 #define FXARGB_SETRGBORDERDIB(p, argb) \
121 ((uint8_t*)(p))[3] = (uint8_t)(argb >> 24), \
122 ((uint8_t*)(p))[0] = (uint8_t)((argb) >> 16), \
123 ((uint8_t*)(p))[1] = (uint8_t)((argb) >> 8), \
124 ((uint8_t*)(p))[2] = (uint8_t)(argb)
125 #define FXARGB_TODIB(argb) (argb)
126 #define FXCMYK_TODIB(cmyk) \
127 ((uint8_t)((cmyk) >> 24) | ((uint8_t)((cmyk) >> 16)) << 8 | \
128 ((uint8_t)((cmyk) >> 8)) << 16 | ((uint8_t)(cmyk) << 24))
129 #define FXARGB_TOBGRORDERDIB(argb) \
130 ((uint8_t)(argb >> 16) | ((uint8_t)(argb >> 8)) << 8 | \
131 ((uint8_t)(argb)) << 16 | ((uint8_t)(argb >> 24) << 24))
132
133 FX_RECT FXDIB_SwapClipBox(FX_RECT& clip,
134 int width,
135 int height,
136 bool bFlipX,
137 bool bFlipY);
138
139 #endif // CORE_FXGE_FX_DIB_H_
140