1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef WebLayer_h
#define WebLayer_h
#include "WebAnimation.h"
#include "WebBlendMode.h"
#include "WebColor.h"
#include "WebCommon.h"
#include "WebCompositingReasons.h"
#include "WebPoint.h"
#include "WebRect.h"
#include "WebString.h"
#include "WebVector.h"
class SkMatrix44;
class SkImageFilter;
namespace blink {
class WebAnimationDelegate;
class WebFilterOperations;
class WebLayerClient;
class WebLayerScrollClient;
struct WebFloatPoint;
struct WebFloatRect;
struct WebLayerPositionConstraint;
struct WebSize;
class WebLayer {
public:
virtual ~WebLayer() { }
// Returns a positive ID that will be unique across all WebLayers allocated in this process.
virtual int id() const = 0;
// Sets a region of the layer as invalid, i.e. needs to update its content.
virtual void invalidateRect(const WebFloatRect&) = 0;
// Sets the entire layer as invalid, i.e. needs to update its content.
virtual void invalidate() = 0;
// These functions do not take ownership of the WebLayer* parameter.
virtual void addChild(WebLayer*) = 0;
virtual void insertChild(WebLayer*, size_t index) = 0;
virtual void replaceChild(WebLayer* reference, WebLayer* newLayer) = 0;
virtual void removeFromParent() = 0;
virtual void removeAllChildren() = 0;
virtual void setAnchorPoint(const WebFloatPoint&) = 0;
virtual WebFloatPoint anchorPoint() const = 0;
virtual void setAnchorPointZ(float) = 0;
virtual float anchorPointZ() const = 0;
virtual void setBounds(const WebSize&) = 0;
virtual WebSize bounds() const = 0;
virtual void setMasksToBounds(bool) = 0;
virtual bool masksToBounds() const = 0;
virtual void setMaskLayer(WebLayer*) = 0;
virtual void setReplicaLayer(WebLayer*) = 0;
virtual void setOpacity(float) = 0;
virtual float opacity() const = 0;
virtual void setBlendMode(WebBlendMode) = 0;
virtual WebBlendMode blendMode() const = 0;
virtual void setIsRootForIsolatedGroup(bool) = 0;
virtual bool isRootForIsolatedGroup() = 0;
virtual void setOpaque(bool) = 0;
virtual bool opaque() const = 0;
virtual void setPosition(const WebFloatPoint&) = 0;
virtual WebFloatPoint position() const = 0;
virtual void setSublayerTransform(const SkMatrix44&) = 0;
virtual SkMatrix44 sublayerTransform() const = 0;
virtual void setTransform(const SkMatrix44&) = 0;
virtual SkMatrix44 transform() const = 0;
// Sets whether the layer draws its content when compositing.
virtual void setDrawsContent(bool) = 0;
virtual bool drawsContent() const = 0;
virtual void setPreserves3D(bool) = 0;
// Mark that this layer should use its parent's transform and double-sided
// properties in determining this layer's backface visibility instead of
// using its own properties. If this property is set, this layer must
// have a parent, and the parent may not have this property set.
// Note: This API is to work around issues with visibility the handling of
// WebKit layers that have a contents layer (canvas, plugin, WebGL, video,
// etc).
virtual void setUseParentBackfaceVisibility(bool) = 0;
virtual void setBackgroundColor(WebColor) = 0;
virtual WebColor backgroundColor() const = 0;
// Clear the filters in use by passing in a newly instantiated
// WebFilterOperations object.
virtual void setFilters(const WebFilterOperations&) = 0;
// Apply filters to pixels that show through the background of this layer.
// Note: These filters are only possible on layers that are drawn directly
// to a root render surface with an opaque background. This means if an
// ancestor of the background-filtered layer sets certain properties
// (opacity, transforms), it may conflict and hide the background filters.
virtual void setBackgroundFilters(const WebFilterOperations&) = 0;
// Provides a bitfield that describe why this composited layer was created.
virtual void setCompositingReasons(WebCompositingReasons) = 0;
// An animation delegate is notified when animations are started and
// stopped. The WebLayer does not take ownership of the delegate, and it is
// the responsibility of the client to reset the layer's delegate before
// deleting the delegate.
virtual void setAnimationDelegate(WebAnimationDelegate*) = 0;
// Returns false if the animation cannot be added.
// Takes ownership of the WebAnimation object.
virtual bool addAnimation(WebAnimation*) = 0;
// Removes all animations with the given id.
virtual void removeAnimation(int animationId) = 0;
// Removes all animations with the given id targeting the given property.
virtual void removeAnimation(int animationId, WebAnimation::TargetProperty) = 0;
// Pauses all animations with the given id.
virtual void pauseAnimation(int animationId, double timeOffset) = 0;
// Returns true if this layer has any active animations - useful for tests.
virtual bool hasActiveAnimation() = 0;
// If a scroll parent is set, this layer will inherit its parent's scroll
// delta and offset even though it will not be a descendant of the scroll
// in the layer hierarchy.
virtual void setScrollParent(WebLayer*) = 0;
// A layer will not respect any clips established by layers between it and
// its nearest clipping ancestor. Note, the clip parent must be an ancestor.
// This is not a requirement of the scroll parent.
virtual void setClipParent(WebLayer*) = 0;
// Scrolling
virtual void setScrollPosition(WebPoint) = 0;
virtual WebPoint scrollPosition() const = 0;
virtual void setMaxScrollPosition(WebSize) = 0;
virtual WebSize maxScrollPosition() const = 0;
virtual void setScrollable(bool) = 0;
virtual bool scrollable() const = 0;
virtual void setUserScrollable(bool horizontal, bool vertical) = 0;
virtual bool userScrollableHorizontal() const = 0;
virtual bool userScrollableVertical() const = 0;
virtual void setHaveWheelEventHandlers(bool) = 0;
virtual bool haveWheelEventHandlers() const = 0;
virtual void setShouldScrollOnMainThread(bool) = 0;
virtual bool shouldScrollOnMainThread() const = 0;
virtual void setNonFastScrollableRegion(const WebVector<WebRect>&) = 0;
virtual WebVector<WebRect> nonFastScrollableRegion() const = 0;
virtual void setTouchEventHandlerRegion(const WebVector<WebRect>&) = 0;
virtual WebVector<WebRect> touchEventHandlerRegion() const = 0;
virtual void setIsContainerForFixedPositionLayers(bool) = 0;
virtual bool isContainerForFixedPositionLayers() const = 0;
// This function sets layer position constraint. The constraint will be used
// to adjust layer position during threaded scrolling.
virtual void setPositionConstraint(const WebLayerPositionConstraint&) = 0;
virtual WebLayerPositionConstraint positionConstraint() const = 0;
// The scroll client is notified when the scroll position of the WebLayer
// changes. Only a single scroll client can be set for a WebLayer at a time.
// The WebLayer does not take ownership of the scroll client, and it is the
// responsibility of the client to reset the layer's scroll client before
// deleting the scroll client.
virtual void setScrollClient(WebLayerScrollClient*) = 0;
// Forces this layer to use a render surface. There is no benefit in doing
// so, but this is to facilitate benchmarks and tests.
virtual void setForceRenderSurface(bool) = 0;
// True if the layer is not part of a tree attached to a WebLayerTreeView.
virtual bool isOrphan() const = 0;
virtual void setWebLayerClient(WebLayerClient*) = 0;
};
} // namespace blink
#endif // WebLayer_h
|
