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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef PDF_DRAW_UTILS_H_ | 5 #ifndef PDF_DRAW_UTILS_H_ |
6 #define PDF_DRAW_UTILS_H_ | 6 #define PDF_DRAW_UTILS_H_ |
7 | 7 |
| 8 #include <stdint.h> |
| 9 |
8 #include <vector> | 10 #include <vector> |
9 | 11 |
10 #include "base/basictypes.h" | |
11 #include "ppapi/cpp/image_data.h" | 12 #include "ppapi/cpp/image_data.h" |
12 #include "ppapi/cpp/rect.h" | 13 #include "ppapi/cpp/rect.h" |
13 | 14 |
14 namespace chrome_pdf { | 15 namespace chrome_pdf { |
15 | 16 |
16 const uint8 kOpaqueAlpha = 0xFF; | 17 const uint8_t kOpaqueAlpha = 0xFF; |
17 const uint8 kTransparentAlpha = 0x00; | 18 const uint8_t kTransparentAlpha = 0x00; |
18 | 19 |
19 void AlphaBlend(const pp::ImageData& src, const pp::Rect& src_rc, | 20 void AlphaBlend(const pp::ImageData& src, |
20 pp::ImageData* dest, const pp::Point& dest_origin, | 21 const pp::Rect& src_rc, |
21 uint8 alpha_adjustment); | 22 pp::ImageData* dest, |
| 23 const pp::Point& dest_origin, |
| 24 uint8_t alpha_adjustment); |
22 | 25 |
23 // Fill rectangle with gradient horizontally or vertically. Start is a color of | 26 // Fill rectangle with gradient horizontally or vertically. Start is a color of |
24 // top-left point of the rectangle, end color is a color of | 27 // top-left point of the rectangle, end color is a color of |
25 // top-right (horizontal==true) or bottom-left (horizontal==false) point. | 28 // top-right (horizontal==true) or bottom-left (horizontal==false) point. |
26 void GradientFill(pp::ImageData* image, | 29 void GradientFill(pp::ImageData* image, |
27 const pp::Rect& rc, | 30 const pp::Rect& rc, |
28 uint32 start_color, | 31 uint32_t start_color, |
29 uint32 end_color, | 32 uint32_t end_color, |
30 bool horizontal); | 33 bool horizontal); |
31 | 34 |
32 // Fill dirty rectangle with gradient, where gradient color set for corners of | 35 // Fill dirty rectangle with gradient, where gradient color set for corners of |
33 // gradient rectangle. Parts of the dirty rect outside of gradient rect will | 36 // gradient rectangle. Parts of the dirty rect outside of gradient rect will |
34 // be unchanged. | 37 // be unchanged. |
35 void GradientFill(pp::Instance* instance, | 38 void GradientFill(pp::Instance* instance, |
36 pp::ImageData* image, | 39 pp::ImageData* image, |
37 const pp::Rect& dirty_rc, | 40 const pp::Rect& dirty_rc, |
38 const pp::Rect& gradient_rc, | 41 const pp::Rect& gradient_rc, |
39 uint32 start_color, | 42 uint32_t start_color, |
40 uint32 end_color, | 43 uint32_t end_color, |
41 bool horizontal, | 44 bool horizontal, |
42 uint8 transparency); | 45 uint8_t transparency); |
43 | 46 |
44 // Copy one image into another. If stretch is true, the result occupy the entire | 47 // Copy one image into another. If stretch is true, the result occupy the entire |
45 // dest_rc. If stretch is false, dest_rc.point will be used as an origin of the | 48 // dest_rc. If stretch is false, dest_rc.point will be used as an origin of the |
46 // result image. Copy will ignore all pixels with transparent alpha from the | 49 // result image. Copy will ignore all pixels with transparent alpha from the |
47 // source image. | 50 // source image. |
48 void CopyImage(const pp::ImageData& src, const pp::Rect& src_rc, | 51 void CopyImage(const pp::ImageData& src, const pp::Rect& src_rc, |
49 pp::ImageData* dest, const pp::Rect& dest_rc, | 52 pp::ImageData* dest, const pp::Rect& dest_rc, |
50 bool stretch); | 53 bool stretch); |
51 | 54 |
52 // Fill in rectangle with specified color. | 55 // Fill in rectangle with specified color. |
53 void FillRect(pp::ImageData* image, const pp::Rect& rc, uint32 color); | 56 void FillRect(pp::ImageData* image, const pp::Rect& rc, uint32_t color); |
54 | 57 |
55 // Shadow Matrix contains matrix for shadow rendering. To reduce amount of | 58 // Shadow Matrix contains matrix for shadow rendering. To reduce amount of |
56 // calculations user may choose to cache matrix and reuse it if nothing changed. | 59 // calculations user may choose to cache matrix and reuse it if nothing changed. |
57 class ShadowMatrix { | 60 class ShadowMatrix { |
58 public: | 61 public: |
59 // Matrix parameters. | 62 // Matrix parameters. |
60 // depth - how big matrix should be. Shadow will go smoothly across the | 63 // depth - how big matrix should be. Shadow will go smoothly across the |
61 // entire matrix from black to background color. | 64 // entire matrix from black to background color. |
62 // If factor == 1, smoothing will be linear from 0 to the end (depth), | 65 // If factor == 1, smoothing will be linear from 0 to the end (depth), |
63 // if 0 < factor < 1, smoothing will drop faster near 0. | 66 // if 0 < factor < 1, smoothing will drop faster near 0. |
64 // if factor > 1, smoothing will drop faster near the end (depth). | 67 // if factor > 1, smoothing will drop faster near the end (depth). |
65 ShadowMatrix(uint32 depth, double factor, uint32 background); | 68 ShadowMatrix(uint32_t depth, double factor, uint32_t background); |
66 | 69 |
67 ~ShadowMatrix(); | 70 ~ShadowMatrix(); |
68 | 71 |
69 uint32 GetValue(int32 x, int32 y) const { return matrix_[y * depth_ + x]; } | 72 uint32_t GetValue(int32_t x, int32_t y) const { |
| 73 return matrix_[y * depth_ + x]; |
| 74 } |
70 | 75 |
71 uint32 depth() const { return depth_; } | 76 uint32_t depth() const { return depth_; } |
72 double factor() const { return factor_; } | 77 double factor() const { return factor_; } |
73 uint32 background() const { return background_; } | 78 uint32_t background() const { return background_; } |
74 | 79 |
75 private: | 80 private: |
76 uint32 depth_; | 81 uint32_t depth_; |
77 double factor_; | 82 double factor_; |
78 uint32 background_; | 83 uint32_t background_; |
79 std::vector<uint32> matrix_; | 84 std::vector<uint32_t> matrix_; |
80 }; | 85 }; |
81 | 86 |
82 // Draw shadow on the image using provided ShadowMatrix. | 87 // Draw shadow on the image using provided ShadowMatrix. |
83 // shadow_rc - rectangle occupied by shadow | 88 // shadow_rc - rectangle occupied by shadow |
84 // object_rc - rectangle that drops the shadow | 89 // object_rc - rectangle that drops the shadow |
85 // clip_rc - clipping region | 90 // clip_rc - clipping region |
86 void DrawShadow(pp::ImageData* image, | 91 void DrawShadow(pp::ImageData* image, |
87 const pp::Rect& shadow_rc, | 92 const pp::Rect& shadow_rc, |
88 const pp::Rect& object_rc, | 93 const pp::Rect& object_rc, |
89 const pp::Rect& clip_rc, | 94 const pp::Rect& clip_rc, |
90 const ShadowMatrix& matrix); | 95 const ShadowMatrix& matrix); |
91 | 96 |
92 } // namespace chrome_pdf | 97 } // namespace chrome_pdf |
93 | 98 |
94 #endif // PDF_DRAW_UTILS_H_ | 99 #endif // PDF_DRAW_UTILS_H_ |
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