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
|
// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_SCROLLBAR_LAYER_H_
#define CC_SCROLLBAR_LAYER_H_
#include "cc/cc_export.h"
#include "cc/contents_scaling_layer.h"
#include "cc/layer_updater.h"
#include "cc/scrollbar_theme_painter.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebScrollbar.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebScrollbarThemeGeometry.h"
namespace cc {
class CachingBitmapContentLayerUpdater;
class ResourceUpdateQueue;
class Scrollbar;
class ScrollbarThemeComposite;
class CC_EXPORT ScrollbarLayer : public ContentsScalingLayer {
public:
virtual scoped_ptr<LayerImpl> createLayerImpl(LayerTreeImpl* treeImpl) OVERRIDE;
static scoped_refptr<ScrollbarLayer> create(
scoped_ptr<WebKit::WebScrollbar>,
scoped_ptr<ScrollbarThemePainter>,
scoped_ptr<WebKit::WebScrollbarThemeGeometry>,
int scrollLayerId);
int scrollLayerId() const { return m_scrollLayerId; }
void setScrollLayerId(int id);
WebKit::WebScrollbar::Orientation orientation() const;
// Layer interface
virtual void setTexturePriorities(const PriorityCalculator&) OVERRIDE;
virtual void update(ResourceUpdateQueue&, const OcclusionTracker*, RenderingStats*) OVERRIDE;
virtual void setLayerTreeHost(LayerTreeHost*) OVERRIDE;
virtual void pushPropertiesTo(LayerImpl*) OVERRIDE;
virtual void calculateContentsScale(
float idealContentsScale,
float* contentsScaleX,
float* contentsScaleY,
gfx::Size* contentBounds) OVERRIDE;
virtual ScrollbarLayer* toScrollbarLayer() OVERRIDE;
protected:
ScrollbarLayer(
scoped_ptr<WebKit::WebScrollbar>,
scoped_ptr<ScrollbarThemePainter>,
scoped_ptr<WebKit::WebScrollbarThemeGeometry>,
int scrollLayerId);
virtual ~ScrollbarLayer();
private:
void updatePart(CachingBitmapContentLayerUpdater*, LayerUpdater::Resource*, const gfx::Rect&, ResourceUpdateQueue&, RenderingStats*);
void createUpdaterIfNeeded();
gfx::Rect scrollbarLayerRectToContentRect(const gfx::Rect& layerRect) const;
bool isDirty() const { return !m_dirtyRect.IsEmpty(); }
int maxTextureSize();
float clampScaleToMaxTextureSize(float scale);
scoped_ptr<WebKit::WebScrollbar> m_scrollbar;
scoped_ptr<ScrollbarThemePainter> m_painter;
scoped_ptr<WebKit::WebScrollbarThemeGeometry> m_geometry;
gfx::Size m_thumbSize;
int m_scrollLayerId;
unsigned m_textureFormat;
gfx::RectF m_dirtyRect;
scoped_refptr<CachingBitmapContentLayerUpdater> m_backTrackUpdater;
scoped_refptr<CachingBitmapContentLayerUpdater> m_foreTrackUpdater;
scoped_refptr<CachingBitmapContentLayerUpdater> m_thumbUpdater;
// All the parts of the scrollbar except the thumb
scoped_ptr<LayerUpdater::Resource> m_backTrack;
scoped_ptr<LayerUpdater::Resource> m_foreTrack;
scoped_ptr<LayerUpdater::Resource> m_thumb;
};
}
#endif // CC_SCROLLBAR_LAYER_H_
|
