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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 BoxReflection_h | 5 #ifndef BoxReflection_h |
| 6 #define BoxReflection_h | 6 #define BoxReflection_h |
| 7 | 7 |
| 8 #include "platform/PlatformExport.h" | 8 #include "platform/PlatformExport.h" |
| 9 #include "platform/geometry/FloatRect.h" |
| 9 #include "platform/graphics/paint/PaintRecord.h" | 10 #include "platform/graphics/paint/PaintRecord.h" |
| 10 #include "third_party/skia/include/core/SkRefCnt.h" | 11 #include "third_party/skia/include/core/SkRefCnt.h" |
| 11 | 12 |
| 12 class SkMatrix; | 13 class SkMatrix; |
| 13 | 14 |
| 14 namespace blink { | 15 namespace blink { |
| 15 | 16 |
| 16 class FloatRect; | |
| 17 | |
| 18 // A reflection, as created by -webkit-box-reflect. Consists of: | 17 // A reflection, as created by -webkit-box-reflect. Consists of: |
| 19 // * a direction (either vertical or horizontal) | 18 // * a direction (either vertical or horizontal) |
| 20 // * an offset to be applied to the reflection after flipping about the | 19 // * an offset to be applied to the reflection after flipping about the |
| 21 // x- or y-axis, according to the direction | 20 // x- or y-axis, according to the direction |
| 22 // * a mask image, which will be applied to the reflection before the | 21 // * a mask image, which will be applied to the reflection before the |
| 23 // reflection matrix is applied | 22 // reflection matrix is applied |
| 24 class PLATFORM_EXPORT BoxReflection { | 23 class PLATFORM_EXPORT BoxReflection { |
| 25 public: | 24 public: |
| 26 enum ReflectionDirection { | 25 enum ReflectionDirection { |
| 27 // Vertically flipped (to appear above or below). | 26 // Vertically flipped (to appear above or below). |
| 28 kVerticalReflection, | 27 kVerticalReflection, |
| 29 // Horizontally flipped (to appear to the left or right). | 28 // Horizontally flipped (to appear to the left or right). |
| 30 kHorizontalReflection, | 29 kHorizontalReflection, |
| 31 }; | 30 }; |
| 32 | 31 |
| 32 BoxReflection(ReflectionDirection direction, float offset) |
| 33 : BoxReflection(direction, offset, nullptr, FloatRect()) {} |
| 34 |
| 33 BoxReflection(ReflectionDirection direction, | 35 BoxReflection(ReflectionDirection direction, |
| 34 float offset, | 36 float offset, |
| 35 sk_sp<PaintRecord> mask = nullptr) | 37 sk_sp<PaintRecord> mask, |
| 36 : direction_(direction), offset_(offset), mask_(std::move(mask)) {} | 38 const FloatRect& mask_bounds) |
| 39 : direction_(direction), |
| 40 offset_(offset), |
| 41 mask_(std::move(mask)), |
| 42 mask_bounds_(mask_bounds) {} |
| 37 | 43 |
| 38 ReflectionDirection Direction() const { return direction_; } | 44 ReflectionDirection Direction() const { return direction_; } |
| 39 float Offset() const { return offset_; } | 45 float Offset() const { return offset_; } |
| 40 const sk_sp<PaintRecord>& Mask() const { return mask_; } | 46 const sk_sp<PaintRecord>& Mask() const { return mask_; } |
| 47 const FloatRect& MaskBounds() const { return mask_bounds_; } |
| 41 | 48 |
| 42 // Returns a matrix which maps points between the original content and its | 49 // Returns a matrix which maps points between the original content and its |
| 43 // reflection. Reflections are self-inverse, so this matrix can be used to | 50 // reflection. Reflections are self-inverse, so this matrix can be used to |
| 44 // map in either direction. | 51 // map in either direction. |
| 45 SkMatrix ReflectionMatrix() const; | 52 SkMatrix ReflectionMatrix() const; |
| 46 | 53 |
| 47 // Maps a source rectangle to the destination rectangle it can affect, | 54 // Maps a source rectangle to the destination rectangle it can affect, |
| 48 // including this reflection. Due to the symmetry of reflections, this can | 55 // including this reflection. Due to the symmetry of reflections, this can |
| 49 // also be used to map from a destination rectangle to the source rectangle | 56 // also be used to map from a destination rectangle to the source rectangle |
| 50 // which contributes to it. | 57 // which contributes to it. |
| 51 FloatRect MapRect(const FloatRect&) const; | 58 FloatRect MapRect(const FloatRect&) const; |
| 52 | 59 |
| 53 private: | 60 private: |
| 54 ReflectionDirection direction_; | 61 ReflectionDirection direction_; |
| 55 float offset_; | 62 float offset_; |
| 56 sk_sp<PaintRecord> mask_; | 63 sk_sp<PaintRecord> mask_; |
| 64 FloatRect mask_bounds_; |
| 57 }; | 65 }; |
| 58 | 66 |
| 59 inline bool operator==(const BoxReflection& a, const BoxReflection& b) { | 67 inline bool operator==(const BoxReflection& a, const BoxReflection& b) { |
| 60 return a.Direction() == b.Direction() && a.Offset() == b.Offset() && | 68 return a.Direction() == b.Direction() && a.Offset() == b.Offset() && |
| 61 a.Mask() == b.Mask(); | 69 a.Mask() == b.Mask() && a.MaskBounds() == b.MaskBounds(); |
| 62 } | 70 } |
| 63 | 71 |
| 64 inline bool operator!=(const BoxReflection& a, const BoxReflection& b) { | 72 inline bool operator!=(const BoxReflection& a, const BoxReflection& b) { |
| 65 return !(a == b); | 73 return !(a == b); |
| 66 } | 74 } |
| 67 | 75 |
| 68 } // namespace blink | 76 } // namespace blink |
| 69 | 77 |
| 70 #endif // BoxReflection_h | 78 #endif // BoxReflection_h |
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