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
|
/*
* 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 INC. 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 INC. 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 CCLayerTreeHostCommon_h
#define CCLayerTreeHostCommon_h
#include "IntRect.h"
#include "IntSize.h"
#include <public/WebTransformationMatrix.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class CCLayerImpl;
class CCLayerSorter;
class LayerChromium;
class CCLayerTreeHostCommon {
public:
static IntRect calculateVisibleRect(const IntRect& targetSurfaceRect, const IntRect& layerBoundRect, const WebKit::WebTransformationMatrix&);
static void calculateDrawTransforms(LayerChromium* rootLayer, const IntSize& deviceViewportSize, float deviceScaleFactor, int maxTextureSize, Vector<RefPtr<LayerChromium> >& renderSurfaceLayerList);
static void calculateDrawTransforms(CCLayerImpl* rootLayer, const IntSize& deviceViewportSize, float deviceScaleFactor, CCLayerSorter*, int maxTextureSize, Vector<CCLayerImpl*>& renderSurfaceLayerList);
static void calculateVisibleRects(Vector<CCLayerImpl*>& renderSurfaceLayerList);
static void calculateVisibleRects(Vector<RefPtr<LayerChromium> >& renderSurfaceLayerList);
// Performs hit testing for a given renderSurfaceLayerList.
static CCLayerImpl* findLayerThatIsHitByPoint(const IntPoint& viewportPoint, Vector<CCLayerImpl*>& renderSurfaceLayerList);
template<typename LayerType> static bool renderSurfaceContributesToTarget(LayerType*, int targetSurfaceLayerID);
// Returns a layer with the given id if one exists in the subtree starting
// from the given root layer (including mask and replica layers).
template<typename LayerType> static LayerType* findLayerInSubtree(LayerType* rootLayer, int layerId);
struct ScrollUpdateInfo {
int layerId;
IntSize scrollDelta;
};
};
struct CCScrollAndScaleSet {
Vector<CCLayerTreeHostCommon::ScrollUpdateInfo> scrolls;
float pageScaleDelta;
};
template<typename LayerType>
bool CCLayerTreeHostCommon::renderSurfaceContributesToTarget(LayerType* layer, int targetSurfaceLayerID)
{
// A layer will either contribute its own content, or its render surface's content, to
// the target surface. The layer contributes its surface's content when both the
// following are true:
// (1) The layer actually has a renderSurface, and
// (2) The layer's renderSurface is not the same as the targetSurface.
//
// Otherwise, the layer just contributes itself to the target surface.
return layer->renderSurface() && layer->id() != targetSurfaceLayerID;
}
template<typename LayerType>
LayerType* CCLayerTreeHostCommon::findLayerInSubtree(LayerType* rootLayer, int layerId)
{
if (rootLayer->id() == layerId)
return rootLayer;
if (rootLayer->maskLayer() && rootLayer->maskLayer()->id() == layerId)
return rootLayer->maskLayer();
if (rootLayer->replicaLayer() && rootLayer->replicaLayer()->id() == layerId)
return rootLayer->replicaLayer();
for (size_t i = 0; i < rootLayer->children().size(); ++i) {
if (LayerType* found = findLayerInSubtree(rootLayer->children()[i].get(), layerId))
return found;
}
return 0;
}
} // namespace WebCore
#endif
|
