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Side by Side Diff: ui/gfx/skbitmap_operations.h

Issue 10453035: Clean up SkBitmapOperations. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: rebase Created 8 years, 7 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 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 UI_GFX_SKBITMAP_OPERATIONS_H_ 5 #ifndef UI_GFX_SKBITMAP_OPERATIONS_H_
6 #define UI_GFX_SKBITMAP_OPERATIONS_H_ 6 #define UI_GFX_SKBITMAP_OPERATIONS_H_
7 #pragma once 7 #pragma once
8 8
9 #include "base/gtest_prod_util.h" 9 #include "base/gtest_prod_util.h"
10 #include "ui/base/ui_export.h" 10 #include "ui/base/ui_export.h"
11 #include "ui/gfx/color_utils.h" 11 #include "ui/gfx/color_utils.h"
12 #include "ui/gfx/shadow_value.h"
12 13
13 namespace gfx { 14 namespace gfx {
14 class Point; 15 class Point;
15 class Size; 16 class Size;
16 } 17 }
17 18
18 class SkBitmap; 19 class SkBitmap;
19 20
20 class UI_EXPORT SkBitmapOperations { 21 class UI_EXPORT SkBitmapOperations {
21 public: 22 public:
(...skipping 69 matching lines...) Expand 10 before | Expand all | Expand 10 after
91 92
92 // Unpremultiplies all pixels in |bitmap|. You almost never want to call 93 // Unpremultiplies all pixels in |bitmap|. You almost never want to call
93 // this, as |SkBitmap|s are always premultiplied by conversion. Call this 94 // this, as |SkBitmap|s are always premultiplied by conversion. Call this
94 // only if you will pass the bitmap's data into a system function that 95 // only if you will pass the bitmap's data into a system function that
95 // doesn't expect premultiplied colors. 96 // doesn't expect premultiplied colors.
96 static SkBitmap UnPreMultiply(const SkBitmap& bitmap); 97 static SkBitmap UnPreMultiply(const SkBitmap& bitmap);
97 98
98 // Transpose the pixels in |bitmap| by swapping x and y. 99 // Transpose the pixels in |bitmap| by swapping x and y.
99 static SkBitmap CreateTransposedBtmap(const SkBitmap& bitmap); 100 static SkBitmap CreateTransposedBtmap(const SkBitmap& bitmap);
100 101
101 // Create a copy of |bitmap| with specified |size|. The image must use the
102 // kARGB_8888_Config config.
103 static SkBitmap CreateResizedBitmap(const SkBitmap& bitmap,
104 const gfx::Size& size);
105
106 // Create a bitmap by combining alpha channel of |bitmap| and color |c|. 102 // Create a bitmap by combining alpha channel of |bitmap| and color |c|.
107 // The image must use the kARGB_8888_Config config. 103 // The image must use the kARGB_8888_Config config.
108 static SkBitmap CreateColorMask(const SkBitmap& bitmap, SkColor c); 104 static SkBitmap CreateColorMask(const SkBitmap& bitmap, SkColor c);
109 105
110 // Create a bitmap with drop shadow added to |bitmap|. |shadow_count| is the 106 // Create a bitmap with drop shadow added to |bitmap|. |shadows| defines
111 // number of shadows to add. |shadow_offset| and |shadow_radius| are arrays 107 // the shadows to add. The created bitmap would be padded to have enough space
112 // with |shadow_count| elements to provide definition for each shadow. The 108 // for shadows and have original bitmap in the center. The image must use the
113 // created bitmap would be padded to have enough space for shadows and have 109 // kARGB_8888_Config config.
114 // original bitmap in the center. The image must use the kARGB_8888_Config
115 // config.
116 static SkBitmap CreateDropShadow(const SkBitmap& bitmap, 110 static SkBitmap CreateDropShadow(const SkBitmap& bitmap,
117 int shadow_count, 111 const gfx::ShadowValues& shadows);
118 const SkColor* shadow_color, 112
119 const gfx::Point* shadow_offset,
120 const SkScalar* shadow_radius);
121 private: 113 private:
122 SkBitmapOperations(); // Class for scoping only. 114 SkBitmapOperations(); // Class for scoping only.
123 115
124 FRIEND_TEST_ALL_PREFIXES(SkBitmapOperationsTest, DownsampleByTwo); 116 FRIEND_TEST_ALL_PREFIXES(SkBitmapOperationsTest, DownsampleByTwo);
125 FRIEND_TEST_ALL_PREFIXES(SkBitmapOperationsTest, DownsampleByTwoSmall); 117 FRIEND_TEST_ALL_PREFIXES(SkBitmapOperationsTest, DownsampleByTwoSmall);
126 }; 118 };
127 119
128 #endif // UI_GFX_SKBITMAP_OPERATIONS_H_ 120 #endif // UI_GFX_SKBITMAP_OPERATIONS_H_
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