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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_COMPOSITOR_LAYER_H_ | 5 #ifndef UI_COMPOSITOR_LAYER_H_ |
6 #define UI_COMPOSITOR_LAYER_H_ | 6 #define UI_COMPOSITOR_LAYER_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 | 9 |
10 #include <memory> | 10 #include <memory> |
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21 #include "cc/layers/layer_client.h" | 21 #include "cc/layers/layer_client.h" |
22 #include "cc/layers/surface_layer.h" | 22 #include "cc/layers/surface_layer.h" |
23 #include "cc/layers/texture_layer_client.h" | 23 #include "cc/layers/texture_layer_client.h" |
24 #include "cc/resources/texture_mailbox.h" | 24 #include "cc/resources/texture_mailbox.h" |
25 #include "cc/surfaces/surface_id.h" | 25 #include "cc/surfaces/surface_id.h" |
26 #include "third_party/skia/include/core/SkColor.h" | 26 #include "third_party/skia/include/core/SkColor.h" |
27 #include "third_party/skia/include/core/SkRegion.h" | 27 #include "third_party/skia/include/core/SkRegion.h" |
28 #include "ui/compositor/compositor.h" | 28 #include "ui/compositor/compositor.h" |
29 #include "ui/compositor/layer_animation_delegate.h" | 29 #include "ui/compositor/layer_animation_delegate.h" |
30 #include "ui/compositor/layer_delegate.h" | 30 #include "ui/compositor/layer_delegate.h" |
| 31 #include "ui/compositor/layer_observer.h" |
31 #include "ui/compositor/layer_type.h" | 32 #include "ui/compositor/layer_type.h" |
32 #include "ui/gfx/geometry/rect.h" | 33 #include "ui/gfx/geometry/rect.h" |
33 #include "ui/gfx/image/image_skia.h" | 34 #include "ui/gfx/image/image_skia.h" |
34 #include "ui/gfx/transform.h" | 35 #include "ui/gfx/transform.h" |
35 | 36 |
36 class SkCanvas; | 37 class SkCanvas; |
37 | 38 |
38 namespace cc { | 39 namespace cc { |
39 class ContentLayer; | 40 class ContentLayer; |
40 class CopyOutputRequest; | 41 class CopyOutputRequest; |
41 class Layer; | 42 class Layer; |
42 class NinePatchLayer; | 43 class NinePatchLayer; |
43 class ResourceUpdateQueue; | 44 class ResourceUpdateQueue; |
44 class SolidColorLayer; | 45 class SolidColorLayer; |
45 class SurfaceLayer; | 46 class SurfaceLayer; |
46 class TextureLayer; | 47 class TextureLayer; |
47 struct ReturnedResource; | 48 struct ReturnedResource; |
48 typedef std::vector<ReturnedResource> ReturnedResourceArray; | 49 typedef std::vector<ReturnedResource> ReturnedResourceArray; |
49 } | 50 } |
50 | 51 |
51 namespace ui { | 52 namespace ui { |
52 | 53 |
53 class Compositor; | 54 class Compositor; |
54 class LayerAnimator; | 55 class LayerAnimator; |
55 class LayerObserver; | |
56 class LayerOwner; | 56 class LayerOwner; |
57 class LayerThreadedAnimationDelegate; | 57 class LayerThreadedAnimationDelegate; |
58 | 58 |
59 // Layer manages a texture, transform and a set of child Layers. Any View that | 59 // Layer manages a texture, transform and a set of child Layers. Any View that |
60 // has enabled layers ends up creating a Layer to manage the texture. | 60 // has enabled layers ends up creating a Layer to manage the texture. |
61 // A Layer can also be created without a texture, in which case it renders | 61 // A Layer can also be created without a texture, in which case it renders |
62 // nothing and is simply used as a node in a hierarchy of layers. | 62 // nothing and is simply used as a node in a hierarchy of layers. |
63 // Coordinate system used in layers is DIP (Density Independent Pixel) | 63 // Coordinate system used in layers is DIP (Density Independent Pixel) |
64 // coordinates unless explicitly mentioned as pixel coordinates. | 64 // coordinates unless explicitly mentioned as pixel coordinates. |
65 // | 65 // |
66 // NOTE: Unlike Views, each Layer does *not* own its child Layers. If you | 66 // NOTE: Unlike Views, each Layer does *not* own its child Layers. If you |
67 // delete a Layer and it has children, the parent of each child Layer is set to | 67 // delete a Layer and it has children, the parent of each child Layer is set to |
68 // NULL, but the children are not deleted. | 68 // NULL, but the children are not deleted. |
69 class COMPOSITOR_EXPORT Layer | 69 class COMPOSITOR_EXPORT Layer |
70 : public LayerAnimationDelegate, | 70 : public LayerAnimationDelegate, |
| 71 public LayerObserver, |
71 NON_EXPORTED_BASE(public cc::ContentLayerClient), | 72 NON_EXPORTED_BASE(public cc::ContentLayerClient), |
72 NON_EXPORTED_BASE(public cc::TextureLayerClient), | 73 NON_EXPORTED_BASE(public cc::TextureLayerClient), |
73 NON_EXPORTED_BASE(public cc::LayerClient) { | 74 NON_EXPORTED_BASE(public cc::LayerClient) { |
74 public: | 75 public: |
75 Layer(); | 76 Layer(); |
76 explicit Layer(LayerType type); | 77 explicit Layer(LayerType type); |
77 ~Layer() override; | 78 ~Layer() override; |
78 | 79 |
| 80 // Note that only solid color and surface content is copied. |
| 81 std::unique_ptr<Layer> Clone() const; |
| 82 |
79 // Retrieves the Layer's compositor. The Layer will walk up its parent chain | 83 // Retrieves the Layer's compositor. The Layer will walk up its parent chain |
80 // to locate it. Returns NULL if the Layer is not attached to a compositor. | 84 // to locate it. Returns NULL if the Layer is not attached to a compositor. |
81 Compositor* GetCompositor() { | 85 Compositor* GetCompositor() { |
82 return const_cast<Compositor*>( | 86 return const_cast<Compositor*>( |
83 const_cast<const Layer*>(this)->GetCompositor()); | 87 const_cast<const Layer*>(this)->GetCompositor()); |
84 } | 88 } |
85 const Compositor* GetCompositor() const; | 89 const Compositor* GetCompositor() const; |
86 | 90 |
87 // Called by the compositor when the Layer is set as its root Layer. This can | 91 // Called by the compositor when the Layer is set as its root Layer. This can |
88 // only ever be called on the root layer. | 92 // only ever be called on the root layer. |
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287 bool TextureFlipped() const; | 291 bool TextureFlipped() const; |
288 | 292 |
289 // Begins showing content from a surface with a particular id. | 293 // Begins showing content from a surface with a particular id. |
290 void SetShowSurface(const cc::SurfaceId& surface_id, | 294 void SetShowSurface(const cc::SurfaceId& surface_id, |
291 const cc::SurfaceLayer::SatisfyCallback& satisfy_callback, | 295 const cc::SurfaceLayer::SatisfyCallback& satisfy_callback, |
292 const cc::SurfaceLayer::RequireCallback& require_callback, | 296 const cc::SurfaceLayer::RequireCallback& require_callback, |
293 gfx::Size surface_size, | 297 gfx::Size surface_size, |
294 float scale, | 298 float scale, |
295 gfx::Size frame_size_in_dip); | 299 gfx::Size frame_size_in_dip); |
296 | 300 |
| 301 // Returns a new layer that mirrors this layer and is optionally synchronized |
| 302 // with the bounds thereof. Note that children are not mirrored, and that the |
| 303 // content is only mirrored if painted by a delegate or backed by a surface. |
| 304 std::unique_ptr<Layer> Mirror(); |
| 305 |
| 306 void set_sync_bounds(bool sync_bounds) { sync_bounds_ = sync_bounds; } |
| 307 |
297 bool has_external_content() { | 308 bool has_external_content() { |
298 return texture_layer_.get() || surface_layer_.get(); | 309 return texture_layer_.get() || surface_layer_.get(); |
299 } | 310 } |
300 | 311 |
301 // Show a solid color instead of delegated or surface contents. | 312 // Show a solid color instead of delegated or surface contents. |
302 void SetShowSolidColorContent(); | 313 void SetShowSolidColorContent(); |
303 | 314 |
304 // Sets the layer's fill color. May only be called for LAYER_SOLID_COLOR. | 315 // Sets the layer's fill color. May only be called for LAYER_SOLID_COLOR. |
305 void SetColor(SkColor color); | 316 void SetColor(SkColor color); |
306 SkColor GetTargetColor(); | 317 SkColor GetTargetColor() const; |
307 SkColor background_color() const; | 318 SkColor background_color() const; |
308 | 319 |
309 // Updates the nine patch layer's image, aperture and border. May only be | 320 // Updates the nine patch layer's image, aperture and border. May only be |
310 // called for LAYER_NINE_PATCH. | 321 // called for LAYER_NINE_PATCH. |
311 void UpdateNinePatchLayerImage(const gfx::ImageSkia& image); | 322 void UpdateNinePatchLayerImage(const gfx::ImageSkia& image); |
312 void UpdateNinePatchLayerAperture(const gfx::Rect& aperture_in_dip); | 323 void UpdateNinePatchLayerAperture(const gfx::Rect& aperture_in_dip); |
313 void UpdateNinePatchLayerBorder(const gfx::Rect& border); | 324 void UpdateNinePatchLayerBorder(const gfx::Rect& border); |
314 // Updates the area completely occluded by another layer, this can be an | 325 // Updates the area completely occluded by another layer, this can be an |
315 // empty rectangle if nothing is occluded. | 326 // empty rectangle if nothing is occluded. |
316 void UpdateNinePatchOcclusion(const gfx::Rect& occlusion); | 327 void UpdateNinePatchOcclusion(const gfx::Rect& occlusion); |
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407 float GetOpacityForAnimation() const override; | 418 float GetOpacityForAnimation() const override; |
408 bool GetVisibilityForAnimation() const override; | 419 bool GetVisibilityForAnimation() const override; |
409 float GetBrightnessForAnimation() const override; | 420 float GetBrightnessForAnimation() const override; |
410 float GetGrayscaleForAnimation() const override; | 421 float GetGrayscaleForAnimation() const override; |
411 SkColor GetColorForAnimation() const override; | 422 SkColor GetColorForAnimation() const override; |
412 float GetDeviceScaleFactor() const override; | 423 float GetDeviceScaleFactor() const override; |
413 cc::Layer* GetCcLayer() const override; | 424 cc::Layer* GetCcLayer() const override; |
414 LayerThreadedAnimationDelegate* GetThreadedAnimationDelegate() override; | 425 LayerThreadedAnimationDelegate* GetThreadedAnimationDelegate() override; |
415 LayerAnimatorCollection* GetLayerAnimatorCollection() override; | 426 LayerAnimatorCollection* GetLayerAnimatorCollection() override; |
416 | 427 |
| 428 // LayerObserver: |
| 429 void LayerDestroyed(Layer* layer) override; |
| 430 |
417 // Creates a corresponding composited layer for |type_|. | 431 // Creates a corresponding composited layer for |type_|. |
418 void CreateCcLayer(); | 432 void CreateCcLayer(); |
419 | 433 |
420 // Recomputes and sets to |cc_layer_|. | 434 // Recomputes and sets to |cc_layer_|. |
421 void RecomputeDrawsContentAndUVRect(); | 435 void RecomputeDrawsContentAndUVRect(); |
422 void RecomputePosition(); | 436 void RecomputePosition(); |
423 | 437 |
424 // Set all filters which got applied to the layer. | 438 // Set all filters which got applied to the layer. |
425 void SetLayerFilters(); | 439 void SetLayerFilters(); |
426 | 440 |
427 // Set all filters which got applied to the layer background. | 441 // Set all filters which got applied to the layer background. |
428 void SetLayerBackgroundFilters(); | 442 void SetLayerBackgroundFilters(); |
429 | 443 |
430 // Cleanup |cc_layer_| and replaces it with |new_layer|. | 444 // Cleanup |cc_layer_| and replaces it with |new_layer|. |
431 void SwitchToLayer(scoped_refptr<cc::Layer> new_layer); | 445 void SwitchToLayer(scoped_refptr<cc::Layer> new_layer); |
432 | 446 |
433 void SetCompositorForAnimatorsInTree(Compositor* compositor); | 447 void SetCompositorForAnimatorsInTree(Compositor* compositor); |
434 void ResetCompositorForAnimatorsInTree(Compositor* compositor); | 448 void ResetCompositorForAnimatorsInTree(Compositor* compositor); |
435 | 449 |
436 const LayerType type_; | 450 const LayerType type_; |
437 | 451 |
438 Compositor* compositor_; | 452 Compositor* compositor_; |
439 | 453 |
440 Layer* parent_; | 454 Layer* parent_; |
441 | 455 |
442 // This layer's children, in bottom-to-top stacking order. | 456 // This layer's children, in bottom-to-top stacking order. |
443 std::vector<Layer*> children_; | 457 std::vector<Layer*> children_; |
444 | 458 |
| 459 class LayerMirror; |
| 460 std::vector<std::unique_ptr<LayerMirror>> mirrors_; |
| 461 |
| 462 // If true, changes to the bounds of this layer are propagated to mirrors. |
| 463 bool sync_bounds_ = false; |
| 464 |
445 gfx::Rect bounds_; | 465 gfx::Rect bounds_; |
446 gfx::Vector2dF subpixel_position_offset_; | 466 gfx::Vector2dF subpixel_position_offset_; |
447 | 467 |
448 // Visibility of this layer. See SetVisible/IsDrawn for more details. | 468 // Visibility of this layer. See SetVisible/IsDrawn for more details. |
449 bool visible_; | 469 bool visible_; |
450 | 470 |
451 bool fills_bounds_opaquely_; | 471 bool fills_bounds_opaquely_; |
452 bool fills_bounds_completely_; | 472 bool fills_bounds_completely_; |
453 | 473 |
454 // Union of damaged rects, in layer space, that SetNeedsDisplayRect should | 474 // Union of damaged rects, in layer space, that SetNeedsDisplayRect should |
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522 // The size of the frame or texture in DIP, set when SetShowDelegatedContent | 542 // The size of the frame or texture in DIP, set when SetShowDelegatedContent |
523 // or SetTextureMailbox was called. | 543 // or SetTextureMailbox was called. |
524 gfx::Size frame_size_in_dip_; | 544 gfx::Size frame_size_in_dip_; |
525 | 545 |
526 DISALLOW_COPY_AND_ASSIGN(Layer); | 546 DISALLOW_COPY_AND_ASSIGN(Layer); |
527 }; | 547 }; |
528 | 548 |
529 } // namespace ui | 549 } // namespace ui |
530 | 550 |
531 #endif // UI_COMPOSITOR_LAYER_H_ | 551 #endif // UI_COMPOSITOR_LAYER_H_ |
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