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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 CC_BASE_SIMPLE_ENCLOSED_REGION_H_ | 5 #ifndef CC_BASE_SIMPLE_ENCLOSED_REGION_H_ |
| 6 #define CC_BASE_SIMPLE_ENCLOSED_REGION_H_ | 6 #define CC_BASE_SIMPLE_ENCLOSED_REGION_H_ |
| 7 | 7 |
| 8 #include <stddef.h> | 8 #include <stddef.h> |
| 9 | 9 |
| 10 #include <string> | 10 #include <string> |
| 11 | 11 |
| 12 #include "cc/base/cc_export.h" | 12 #include "cc/base/base_export.h" |
| 13 #include "ui/gfx/geometry/rect.h" | 13 #include "ui/gfx/geometry/rect.h" |
| 14 | 14 |
| 15 namespace cc { | 15 namespace cc { |
| 16 | 16 |
| 17 class Region; | 17 class Region; |
| 18 | 18 |
| 19 // A constant-sized approximation of a Region. The SimpleEnclosedRegion may | 19 // A constant-sized approximation of a Region. The SimpleEnclosedRegion may |
| 20 // exclude points in its approximation (may have false negatives) but will never | 20 // exclude points in its approximation (may have false negatives) but will never |
| 21 // include a point that would not be in the actual Region (no false positives). | 21 // include a point that would not be in the actual Region (no false positives). |
| 22 class CC_EXPORT SimpleEnclosedRegion { | 22 class CC_BASE_EXPORT SimpleEnclosedRegion { |
| 23 public: | 23 public: |
| 24 SimpleEnclosedRegion() : rect_() {} | 24 SimpleEnclosedRegion() : rect_() {} |
| 25 SimpleEnclosedRegion(const SimpleEnclosedRegion& region) | 25 SimpleEnclosedRegion(const SimpleEnclosedRegion& region) |
| 26 : rect_(region.rect_) {} | 26 : rect_(region.rect_) {} |
| 27 explicit SimpleEnclosedRegion(const gfx::Rect& rect) : rect_(rect) {} | 27 explicit SimpleEnclosedRegion(const gfx::Rect& rect) : rect_(rect) {} |
| 28 SimpleEnclosedRegion(int x, int y, int w, int h) : rect_(x, y, w, h) {} | 28 SimpleEnclosedRegion(int x, int y, int w, int h) : rect_(x, y, w, h) {} |
| 29 SimpleEnclosedRegion(int w, int h) : rect_(w, h) {} | 29 SimpleEnclosedRegion(int w, int h) : rect_(w, h) {} |
| 30 explicit SimpleEnclosedRegion(const Region& region); | 30 explicit SimpleEnclosedRegion(const Region& region); |
| 31 ~SimpleEnclosedRegion(); | 31 ~SimpleEnclosedRegion(); |
| 32 | 32 |
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| 115 const SimpleEnclosedRegion& a, | 115 const SimpleEnclosedRegion& a, |
| 116 const SimpleEnclosedRegion& b) { | 116 const SimpleEnclosedRegion& b) { |
| 117 SimpleEnclosedRegion result = a; | 117 SimpleEnclosedRegion result = a; |
| 118 result.Union(b); | 118 result.Union(b); |
| 119 return result; | 119 return result; |
| 120 } | 120 } |
| 121 | 121 |
| 122 } // namespace cc | 122 } // namespace cc |
| 123 | 123 |
| 124 #endif // CC_BASE_SIMPLE_ENCLOSED_REGION_H_ | 124 #endif // CC_BASE_SIMPLE_ENCLOSED_REGION_H_ |
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