blob: 68bad3ba3b55d5b21699c38d7d9cc14eb70f53c4 (
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
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
|
// 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_ANIMATION_ANIMATION_CURVE_H_
#define CC_ANIMATION_ANIMATION_CURVE_H_
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "cc/base/cc_export.h"
#include "cc/output/filter_operations.h"
#include "ui/gfx/transform.h"
namespace gfx {
class BoxF;
}
namespace cc {
class ColorAnimationCurve;
class FilterAnimationCurve;
class FloatAnimationCurve;
class ScrollOffsetAnimationCurve;
class TransformAnimationCurve;
class TransformOperations;
// An animation curve is a function that returns a value given a time.
class CC_EXPORT AnimationCurve {
public:
enum CurveType { COLOR, FLOAT, TRANSFORM, FILTER, SCROLL_OFFSET };
virtual ~AnimationCurve() {}
virtual base::TimeDelta Duration() const = 0;
virtual CurveType Type() const = 0;
virtual scoped_ptr<AnimationCurve> Clone() const = 0;
const ColorAnimationCurve* ToColorAnimationCurve() const;
const FloatAnimationCurve* ToFloatAnimationCurve() const;
const TransformAnimationCurve* ToTransformAnimationCurve() const;
const FilterAnimationCurve* ToFilterAnimationCurve() const;
const ScrollOffsetAnimationCurve* ToScrollOffsetAnimationCurve() const;
ScrollOffsetAnimationCurve* ToScrollOffsetAnimationCurve();
};
class CC_EXPORT ColorAnimationCurve : public AnimationCurve {
public:
~ColorAnimationCurve() override {}
virtual SkColor GetValue(base::TimeDelta t) const = 0;
// Partial Animation implementation.
CurveType Type() const override;
};
class CC_EXPORT FloatAnimationCurve : public AnimationCurve {
public:
~FloatAnimationCurve() override {}
virtual float GetValue(base::TimeDelta t) const = 0;
// Partial Animation implementation.
CurveType Type() const override;
};
class CC_EXPORT TransformAnimationCurve : public AnimationCurve {
public:
~TransformAnimationCurve() override {}
virtual gfx::Transform GetValue(base::TimeDelta t) const = 0;
// Sets |bounds| to be the bounding box for the region within which |box|
// will move during this animation. If this region cannot be computed,
// returns false.
virtual bool AnimatedBoundsForBox(const gfx::BoxF& box,
gfx::BoxF* bounds) const = 0;
// Returns true if this animation affects scale.
virtual bool AffectsScale() const = 0;
// Returns true if this animation is a translation.
virtual bool IsTranslation() const = 0;
// Returns true if this animation preserves axis alignment.
virtual bool PreservesAxisAlignment() const = 0;
// Animation start scale
virtual bool AnimationStartScale(bool forward_direction,
float* start_scale) const = 0;
// Set |max_scale| to the maximum scale along any dimension at the end of
// intermediate animation target points (eg keyframe end points). When
// |forward_direction| is true, the animation curve assumes it plays from
// the first keyframe to the last, otherwise it assumes the opposite. Returns
// false if the maximum scale cannot be computed.
virtual bool MaximumTargetScale(bool forward_direction,
float* max_scale) const = 0;
// Partial Animation implementation.
CurveType Type() const override;
};
class CC_EXPORT FilterAnimationCurve : public AnimationCurve {
public:
~FilterAnimationCurve() override {}
virtual FilterOperations GetValue(base::TimeDelta t) const = 0;
virtual bool HasFilterThatMovesPixels() const = 0;
// Partial Animation implementation.
CurveType Type() const override;
};
} // namespace cc
#endif // CC_ANIMATION_ANIMATION_CURVE_H_
|
