blob: 627ea6bb116d0195e36295cd2efc103a767049cb (
plain)
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
|
// 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 CCScrollbarAnimationController_h
#define CCScrollbarAnimationController_h
#include "FloatPoint.h"
#include "IntSize.h"
#include <wtf/PassOwnPtr.h>
namespace cc {
class CCLayerImpl;
class CCScrollbarLayerImpl;
// This abstract class represents the compositor-side analogy of ScrollbarAnimator.
// Individual platforms should subclass it to provide specialized implementation.
class CCScrollbarAnimationController {
public:
// Implemented by subclass.
static PassOwnPtr<CCScrollbarAnimationController> create(CCLayerImpl* scrollLayer);
virtual ~CCScrollbarAnimationController();
virtual bool animate(double monotonicTime) { return false; }
void didPinchGestureBegin();
void didPinchGestureUpdate();
void didPinchGestureEnd();
void updateScrollOffset(CCLayerImpl* scrollLayer);
void setHorizontalScrollbarLayer(CCScrollbarLayerImpl* layer) { m_horizontalScrollbarLayer = layer; }
CCScrollbarLayerImpl* horizontalScrollbarLayer() const { return m_horizontalScrollbarLayer; }
void setVerticalScrollbarLayer(CCScrollbarLayerImpl* layer) { m_verticalScrollbarLayer = layer; }
CCScrollbarLayerImpl* verticalScrollbarLayer() const { return m_verticalScrollbarLayer; }
FloatPoint currentPos() const { return m_currentPos; }
IntSize totalSize() const { return m_totalSize; }
IntSize maximum() const { return m_maximum; }
virtual void didPinchGestureBeginAtTime(double monotonicTime) { }
virtual void didPinchGestureUpdateAtTime(double monotonicTime) { }
virtual void didPinchGestureEndAtTime(double monotonicTime) { }
virtual void updateScrollOffsetAtTime(CCLayerImpl* scrollLayer, double monotonicTime);
protected:
explicit CCScrollbarAnimationController(CCLayerImpl* scrollLayer);
private:
static IntSize getScrollLayerBounds(const CCLayerImpl*);
// Beware of dangling pointer. Always update these during tree synchronization.
CCScrollbarLayerImpl* m_horizontalScrollbarLayer;
CCScrollbarLayerImpl* m_verticalScrollbarLayer;
FloatPoint m_currentPos;
IntSize m_totalSize;
IntSize m_maximum;
};
} // namespace cc
#endif // CCScrollbarAnimationController_h
|
