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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_SHADOW_VALUE_H_ | 5 #ifndef UI_GFX_SHADOW_VALUE_H_ |
| 6 #define UI_GFX_SHADOW_VALUE_H_ | 6 #define UI_GFX_SHADOW_VALUE_H_ |
| 7 | 7 |
| 8 #include <string> | 8 #include <string> |
| 9 #include <vector> | 9 #include <vector> |
| 10 | 10 |
| 11 #include "third_party/skia/include/core/SkColor.h" | 11 #include "third_party/skia/include/core/SkColor.h" |
| 12 #include "ui/gfx/geometry/point.h" | 12 #include "ui/gfx/geometry/vector2d.h" |
| 13 #include "ui/gfx/gfx_export.h" | 13 #include "ui/gfx/gfx_export.h" |
| 14 | 14 |
| 15 namespace gfx { | 15 namespace gfx { |
| 16 | 16 |
| 17 class Insets; | 17 class Insets; |
| 18 | 18 |
| 19 class ShadowValue; | 19 class ShadowValue; |
| 20 typedef std::vector<ShadowValue> ShadowValues; | 20 typedef std::vector<ShadowValue> ShadowValues; |
| 21 | 21 |
| 22 // ShadowValue encapsulates parameters needed to define a shadow, including the | 22 // ShadowValue encapsulates parameters needed to define a shadow, including the |
| 23 // shadow's offset, blur amount and color. | 23 // shadow's offset, blur amount and color. |
| 24 class GFX_EXPORT ShadowValue { | 24 class GFX_EXPORT ShadowValue { |
| 25 public: | 25 public: |
| 26 ShadowValue(); | 26 ShadowValue(); |
| 27 ShadowValue(const gfx::Point& offset, double blur, SkColor color); | 27 ShadowValue(const gfx::Vector2d& offset, double blur, SkColor color); |
| 28 ~ShadowValue(); | 28 ~ShadowValue(); |
| 29 | 29 |
| 30 int x() const { return offset_.x(); } | 30 int x() const { return offset_.x(); } |
| 31 int y() const { return offset_.y(); } | 31 int y() const { return offset_.y(); } |
| 32 const gfx::Point& offset() const { return offset_; } | 32 const gfx::Vector2d& offset() const { return offset_; } |
| 33 double blur() const { return blur_; } | 33 double blur() const { return blur_; } |
| 34 SkColor color() const { return color_; } | 34 SkColor color() const { return color_; } |
| 35 | 35 |
| 36 ShadowValue Scale(float scale) const; | 36 ShadowValue Scale(float scale) const; |
| 37 | 37 |
| 38 std::string ToString() const; | 38 std::string ToString() const; |
| 39 | 39 |
| 40 // Gets margin space needed for shadows. Note that values in returned Insets | 40 // Gets margin space needed for shadows. Note that values in returned Insets |
| 41 // are negative because shadow margins are outside a boundary. | 41 // are negative because shadow margins are outside a boundary. |
| 42 static Insets GetMargin(const ShadowValues& shadows); | 42 static Insets GetMargin(const ShadowValues& shadows); |
| 43 | 43 |
| 44 private: | 44 private: |
| 45 gfx::Point offset_; | 45 gfx::Vector2d offset_; |
| 46 | 46 |
| 47 // Blur amount of the shadow in pixels. If underlying implementation supports | 47 // Blur amount of the shadow in pixels. If underlying implementation supports |
| 48 // (e.g. Skia), it can have fraction part such as 0.5 pixel. The value | 48 // (e.g. Skia), it can have fraction part such as 0.5 pixel. The value |
| 49 // defines a range from full shadow color at the start point inside the | 49 // defines a range from full shadow color at the start point inside the |
| 50 // shadow to fully transparent at the end point outside it. The range is | 50 // shadow to fully transparent at the end point outside it. The range is |
| 51 // perpendicular to and centered on the shadow edge. For example, a blur | 51 // perpendicular to and centered on the shadow edge. For example, a blur |
| 52 // amount of 4.0 means to have a blurry shadow edge of 4 pixels that | 52 // amount of 4.0 means to have a blurry shadow edge of 4 pixels that |
| 53 // transitions from full shadow color to fully transparent and with 2 pixels | 53 // transitions from full shadow color to fully transparent and with 2 pixels |
| 54 // inside the shadow and 2 pixels goes beyond the edge. | 54 // inside the shadow and 2 pixels goes beyond the edge. |
| 55 double blur_; | 55 double blur_; |
| 56 | 56 |
| 57 SkColor color_; | 57 SkColor color_; |
| 58 }; | 58 }; |
| 59 | 59 |
| 60 } // namespace gfx | 60 } // namespace gfx |
| 61 | 61 |
| 62 #endif // UI_GFX_SHADOW_VALUE_H_ | 62 #endif // UI_GFX_SHADOW_VALUE_H_ |
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