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29 #include "WebAnimation.h"
30 #include "WebBlendMode.h"
32 #include "WebCommon.h"
36 #include "WebString.h"
37 #include "WebVector.h"
43 class WebAnimationDelegate;
44 class WebFilterOperations;
46 class WebLayerScrollClient;
49 struct WebLayerPositionConstraint;
53 virtual ~WebLayer() { }
55 // Returns a positive ID that will be unique across all WebLayers allocated in this process.
56 virtual int id() const = 0;
58 // Sets a region of the layer as invalid, i.e. needs to update its content.
59 virtual void invalidateRect(const WebFloatRect&) = 0;
61 // Sets the entire layer as invalid, i.e. needs to update its content.
62 virtual void invalidate() = 0;
64 // These functions do not take ownership of the WebLayer* parameter.
65 virtual void addChild(WebLayer*) = 0;
66 virtual void insertChild(WebLayer*, size_t index) = 0;
67 virtual void replaceChild(WebLayer* reference, WebLayer* newLayer) = 0;
68 virtual void removeFromParent() = 0;
69 virtual void removeAllChildren() = 0;
71 virtual void setAnchorPoint(const WebFloatPoint&) = 0;
72 virtual WebFloatPoint anchorPoint() const = 0;
74 virtual void setAnchorPointZ(float) = 0;
75 virtual float anchorPointZ() const = 0;
77 virtual void setBounds(const WebSize&) = 0;
78 virtual WebSize bounds() const = 0;
80 virtual void setMasksToBounds(bool) = 0;
81 virtual bool masksToBounds() const = 0;
83 virtual void setMaskLayer(WebLayer*) = 0;
84 virtual void setReplicaLayer(WebLayer*) = 0;
86 virtual void setOpacity(float) = 0;
87 virtual float opacity() const = 0;
89 virtual void setBlendMode(WebBlendMode) = 0;
90 virtual WebBlendMode blendMode() const = 0;
92 virtual void setIsRootForIsolatedGroup(bool) = 0;
93 virtual bool isRootForIsolatedGroup() = 0;
95 virtual void setOpaque(bool) = 0;
96 virtual bool opaque() const = 0;
98 virtual void setPosition(const WebFloatPoint&) = 0;
99 virtual WebFloatPoint position() const = 0;
101 virtual void setTransform(const SkMatrix44&) = 0;
102 virtual SkMatrix44 transform() const = 0;
104 // Sets whether the layer draws its content when compositing.
105 virtual void setDrawsContent(bool) = 0;
106 virtual bool drawsContent() const = 0;
108 // Sets whether the layer's transform should be flattened.
109 virtual void setShouldFlattenTransform(bool) = 0;
111 // Sets the id of the layer's 3d rendering context. Layers in the same 3d
112 // rendering context id are sorted with one another according to their 3d
113 // position rather than their tree order.
114 virtual void setRenderingContext(int id) = 0;
116 // Mark that this layer should use its parent's transform and double-sided
117 // properties in determining this layer's backface visibility instead of
118 // using its own properties. If this property is set, this layer must
119 // have a parent, and the parent may not have this property set.
120 // Note: This API is to work around issues with visibility the handling of
121 // WebKit layers that have a contents layer (canvas, plugin, WebGL, video,
123 virtual void setUseParentBackfaceVisibility(bool) = 0;
125 virtual void setBackgroundColor(WebColor) = 0;
126 virtual WebColor backgroundColor() const = 0;
128 // Clear the filters in use by passing in a newly instantiated
129 // WebFilterOperations object.
130 virtual void setFilters(const WebFilterOperations&) = 0;
132 // Apply filters to pixels that show through the background of this layer.
133 // Note: These filters are only possible on layers that are drawn directly
134 // to a root render surface with an opaque background. This means if an
135 // ancestor of the background-filtered layer sets certain properties
136 // (opacity, transforms), it may conflict and hide the background filters.
137 virtual void setBackgroundFilters(const WebFilterOperations&) = 0;
139 // An animation delegate is notified when animations are started and
140 // stopped. The WebLayer does not take ownership of the delegate, and it is
141 // the responsibility of the client to reset the layer's delegate before
142 // deleting the delegate.
143 virtual void setAnimationDelegate(WebAnimationDelegate*) = 0;
146 // Returns false if the animation cannot be added.
147 // Takes ownership of the WebAnimation object.
148 virtual bool addAnimation(WebAnimation*) = 0;
150 // Removes all animations with the given id.
151 virtual void removeAnimation(int animationId) = 0;
153 // Removes all animations with the given id targeting the given property.
154 virtual void removeAnimation(int animationId, WebAnimation::TargetProperty) = 0;
156 // Pauses all animations with the given id.
157 virtual void pauseAnimation(int animationId, double timeOffset) = 0;
159 // Returns true if this layer has any active animations - useful for tests.
160 virtual bool hasActiveAnimation() = 0;
162 // If a scroll parent is set, this layer will inherit its parent's scroll
163 // delta and offset even though it will not be a descendant of the scroll
164 // in the layer hierarchy.
165 virtual void setScrollParent(WebLayer*) = 0;
167 // A layer will not respect any clips established by layers between it and
168 // its nearest clipping ancestor. Note, the clip parent must be an ancestor.
169 // This is not a requirement of the scroll parent.
170 virtual void setClipParent(WebLayer*) = 0;
173 virtual void setScrollPosition(WebPoint) = 0;
174 virtual WebPoint scrollPosition() const = 0;
176 // To set a WebLayer as scrollable we must specify the corresponding clip layer.
177 virtual void setScrollClipLayer(WebLayer*) = 0;
178 virtual bool scrollable() const = 0;
179 virtual void setUserScrollable(bool horizontal, bool vertical) = 0;
180 virtual bool userScrollableHorizontal() const = 0;
181 virtual bool userScrollableVertical() const = 0;
183 virtual void setHaveWheelEventHandlers(bool) = 0;
184 virtual bool haveWheelEventHandlers() const = 0;
186 virtual void setHaveScrollEventHandlers(bool) = 0;
187 virtual bool haveScrollEventHandlers() const = 0;
189 virtual void setShouldScrollOnMainThread(bool) = 0;
190 virtual bool shouldScrollOnMainThread() const = 0;
192 virtual void setNonFastScrollableRegion(const WebVector<WebRect>&) = 0;
193 virtual WebVector<WebRect> nonFastScrollableRegion() const = 0;
195 virtual void setTouchEventHandlerRegion(const WebVector<WebRect>&) = 0;
196 virtual WebVector<WebRect> touchEventHandlerRegion() const = 0;
198 virtual void setIsContainerForFixedPositionLayers(bool) = 0;
199 virtual bool isContainerForFixedPositionLayers() const = 0;
201 // This function sets layer position constraint. The constraint will be used
202 // to adjust layer position during threaded scrolling.
203 virtual void setPositionConstraint(const WebLayerPositionConstraint&) = 0;
204 virtual WebLayerPositionConstraint positionConstraint() const = 0;
206 // The scroll client is notified when the scroll position of the WebLayer
207 // changes. Only a single scroll client can be set for a WebLayer at a time.
208 // The WebLayer does not take ownership of the scroll client, and it is the
209 // responsibility of the client to reset the layer's scroll client before
210 // deleting the scroll client.
211 virtual void setScrollClient(WebLayerScrollClient*) = 0;
213 // Forces this layer to use a render surface. There is no benefit in doing
214 // so, but this is to facilitate benchmarks and tests.
215 virtual void setForceRenderSurface(bool) = 0;
217 // True if the layer is not part of a tree attached to a WebLayerTreeView.
218 virtual bool isOrphan() const = 0;
220 virtual void setWebLayerClient(WebLayerClient*) = 0;