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29 #include "WebBlendMode.h"
31 #include "WebCommon.h"
32 #include "WebCompositorAnimation.h"
33 #include "WebDoublePoint.h"
34 #include "WebFloatPoint3D.h"
38 #include "WebString.h"
39 #include "WebVector.h"
45 class WebCompositorAnimationDelegate;
46 class WebFilterOperations;
48 class WebLayerScrollClient;
50 struct WebLayerPositionConstraint;
54 virtual ~WebLayer() { }
56 // Returns a positive ID that will be unique across all WebLayers allocated in this process.
57 virtual int id() const = 0;
59 // Sets a region of the layer as invalid, i.e. needs to update its content.
60 virtual void invalidateRect(const WebRect&) = 0;
62 // Sets the entire layer as invalid, i.e. needs to update its content.
63 virtual void invalidate() = 0;
65 // These functions do not take ownership of the WebLayer* parameter.
66 virtual void addChild(WebLayer*) = 0;
67 virtual void insertChild(WebLayer*, size_t index) = 0;
68 virtual void replaceChild(WebLayer* reference, WebLayer* newLayer) = 0;
69 virtual void removeFromParent() = 0;
70 virtual void removeAllChildren() = 0;
72 virtual void setBounds(const WebSize&) = 0;
73 virtual WebSize bounds() const = 0;
75 virtual void setMasksToBounds(bool) = 0;
76 virtual bool masksToBounds() const = 0;
78 virtual void setMaskLayer(WebLayer*) = 0;
79 virtual void setReplicaLayer(WebLayer*) = 0;
81 virtual void setOpacity(float) = 0;
82 virtual float opacity() const = 0;
84 virtual void setBlendMode(WebBlendMode) = 0;
85 virtual WebBlendMode blendMode() const = 0;
87 virtual void setIsRootForIsolatedGroup(bool) = 0;
88 virtual bool isRootForIsolatedGroup() = 0;
90 virtual void setOpaque(bool) = 0;
91 virtual bool opaque() const = 0;
93 virtual void setPosition(const WebFloatPoint&) = 0;
94 virtual WebFloatPoint position() const = 0;
96 virtual void setTransform(const SkMatrix44&) = 0;
97 virtual SkMatrix44 transform() const = 0;
99 virtual void setTransformOrigin(const WebFloatPoint3D&) { }
100 virtual WebFloatPoint3D transformOrigin() const { return WebFloatPoint3D(); }
102 // Sets whether the layer draws its content when compositing.
103 virtual void setDrawsContent(bool) = 0;
104 virtual bool drawsContent() const = 0;
106 // Sets whether the layer's transform should be flattened.
107 virtual void setShouldFlattenTransform(bool) = 0;
109 // Sets the id of the layer's 3d rendering context. Layers in the same 3d
110 // rendering context id are sorted with one another according to their 3d
111 // position rather than their tree order.
112 virtual void setRenderingContext(int id) = 0;
114 // Mark that this layer should use its parent's transform and double-sided
115 // properties in determining this layer's backface visibility instead of
116 // using its own properties. If this property is set, this layer must
117 // have a parent, and the parent may not have this property set.
118 // Note: This API is to work around issues with visibility the handling of
119 // WebKit layers that have a contents layer (canvas, plugin, WebGL, video,
121 virtual void setUseParentBackfaceVisibility(bool) = 0;
123 virtual void setBackgroundColor(WebColor) = 0;
124 virtual WebColor backgroundColor() const = 0;
126 // Clear the filters in use by passing in a newly instantiated
127 // WebFilterOperations object.
128 virtual void setFilters(const WebFilterOperations&) = 0;
130 // An animation delegate is notified when animations are started and
131 // stopped. The WebLayer does not take ownership of the delegate, and it is
132 // the responsibility of the client to reset the layer's delegate before
133 // deleting the delegate.
134 virtual void setAnimationDelegate(WebCompositorAnimationDelegate*) = 0;
137 // Returns false if the animation cannot be added.
138 // Takes ownership of the WebCompositorAnimation object.
139 virtual bool addAnimation(WebCompositorAnimation*) = 0;
141 // Removes all animations with the given id.
142 virtual void removeAnimation(int animationId) = 0;
144 // Removes all animations with the given id targeting the given property.
145 virtual void removeAnimation(int animationId, WebCompositorAnimation::TargetProperty) = 0;
147 // Pauses all animations with the given id.
148 virtual void pauseAnimation(int animationId, double timeOffset) = 0;
150 // Returns true if this layer has any active animations - useful for tests.
151 virtual bool hasActiveAnimation() = 0;
153 // If a scroll parent is set, this layer will inherit its parent's scroll
154 // delta and offset even though it will not be a descendant of the scroll
155 // in the layer hierarchy.
156 virtual void setScrollParent(WebLayer*) = 0;
158 // A layer will not respect any clips established by layers between it and
159 // its nearest clipping ancestor. Note, the clip parent must be an ancestor.
160 // This is not a requirement of the scroll parent.
161 virtual void setClipParent(WebLayer*) = 0;
164 virtual void setScrollPositionDouble(WebDoublePoint) = 0;
165 virtual WebDoublePoint scrollPositionDouble() const = 0;
167 // To set a WebLayer as scrollable we must specify the corresponding clip layer.
168 virtual void setScrollClipLayer(WebLayer*) = 0;
169 virtual bool scrollable() const = 0;
170 virtual void setUserScrollable(bool horizontal, bool vertical) = 0;
171 virtual bool userScrollableHorizontal() const = 0;
172 virtual bool userScrollableVertical() const = 0;
174 virtual void setHaveWheelEventHandlers(bool) = 0;
175 virtual bool haveWheelEventHandlers() const = 0;
177 virtual void setHaveScrollEventHandlers(bool) = 0;
178 virtual bool haveScrollEventHandlers() const = 0;
180 virtual void setShouldScrollOnMainThread(bool) = 0;
181 virtual bool shouldScrollOnMainThread() const = 0;
183 virtual void setNonFastScrollableRegion(const WebVector<WebRect>&) = 0;
184 virtual WebVector<WebRect> nonFastScrollableRegion() const = 0;
186 virtual void setTouchEventHandlerRegion(const WebVector<WebRect>&) = 0;
187 virtual WebVector<WebRect> touchEventHandlerRegion() const = 0;
189 virtual void setIsContainerForFixedPositionLayers(bool) = 0;
190 virtual bool isContainerForFixedPositionLayers() const = 0;
192 // This function sets layer position constraint. The constraint will be used
193 // to adjust layer position during threaded scrolling.
194 virtual void setPositionConstraint(const WebLayerPositionConstraint&) = 0;
195 virtual WebLayerPositionConstraint positionConstraint() const = 0;
197 // The scroll client is notified when the scroll position of the WebLayer
198 // changes. Only a single scroll client can be set for a WebLayer at a time.
199 // The WebLayer does not take ownership of the scroll client, and it is the
200 // responsibility of the client to reset the layer's scroll client before
201 // deleting the scroll client.
202 virtual void setScrollClient(WebLayerScrollClient*) = 0;
204 // Forces this layer to use a render surface. There is no benefit in doing
205 // so, but this is to facilitate benchmarks and tests.
206 virtual void setForceRenderSurface(bool) = 0;
208 // True if the layer is not part of a tree attached to a WebLayerTreeView.
209 virtual bool isOrphan() const = 0;
211 virtual void setWebLayerClient(WebLayerClient*) = 0;