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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #include "ui/gfx/image/image_family.h" | 5 #include "ui/gfx/image/image_family.h" |
6 | 6 |
7 #include <cmath> | 7 #include <cmath> |
8 | 8 |
9 #include "ui/gfx/image/image.h" | 9 #include "ui/gfx/image/image.h" |
10 #include "ui/gfx/image/image_skia.h" | 10 #include "ui/gfx/image/image_skia.h" |
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32 float aspect = static_cast<float>(size.width()) / size.height(); | 32 float aspect = static_cast<float>(size.width()) / size.height(); |
33 DCHECK_GT(aspect, 0.0f); | 33 DCHECK_GT(aspect, 0.0f); |
34 map_[MapKey(aspect, size.width())] = image; | 34 map_[MapKey(aspect, size.width())] = image; |
35 } | 35 } |
36 } | 36 } |
37 | 37 |
38 void ImageFamily::Add(const gfx::ImageSkia& image_skia) { | 38 void ImageFamily::Add(const gfx::ImageSkia& image_skia) { |
39 Add(gfx::Image(image_skia)); | 39 Add(gfx::Image(image_skia)); |
40 } | 40 } |
41 | 41 |
42 const gfx::Image* ImageFamily::Get(int width, int height) const { | 42 const gfx::Image* ImageFamily::GetBest(int width, int height) const { |
43 if (map_.empty()) | 43 if (map_.empty()) |
44 return NULL; | 44 return NULL; |
45 | 45 |
46 // If either |width| or |height| is 0, both are. | 46 // If either |width| or |height| is 0, both are. |
47 float desired_aspect; | 47 float desired_aspect; |
48 if (height == 0 || width == 0) { | 48 if (height == 0 || width == 0) { |
49 desired_aspect = 1.0f; | 49 desired_aspect = 1.0f; |
50 height = 0; | 50 height = 0; |
51 width = 0; | 51 width = 0; |
52 } else { | 52 } else { |
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115 DCHECK(greater_or_equal != map_.begin()); | 115 DCHECK(greater_or_equal != map_.begin()); |
116 std::map<MapKey, gfx::Image>::const_iterator less_than = greater_or_equal; | 116 std::map<MapKey, gfx::Image>::const_iterator less_than = greater_or_equal; |
117 --less_than; | 117 --less_than; |
118 // This must be true because there must be at least one image with |aspect|. | 118 // This must be true because there must be at least one image with |aspect|. |
119 DCHECK_EQ(less_than->first.aspect(), aspect); | 119 DCHECK_EQ(less_than->first.aspect(), aspect); |
120 // We have found the largest image smaller than desired. | 120 // We have found the largest image smaller than desired. |
121 return &less_than->second; | 121 return &less_than->second; |
122 } | 122 } |
123 | 123 |
124 } // namespace gfx | 124 } // namespace gfx |
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