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
|
// 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.
#include "config.h"
#include "CCKeyframedAnimationCurve.h"
#include <wtf/OwnPtr.h>
using WebKit::WebTransformationMatrix;
namespace WebCore {
namespace {
template <class Keyframe>
void insertKeyframe(PassOwnPtr<Keyframe> popKeyframe, Vector<OwnPtr<Keyframe> >& keyframes)
{
OwnPtr<Keyframe> keyframe = popKeyframe;
// Usually, the keyframes will be added in order, so this loop would be unnecessary and
// we should skip it if possible.
if (!keyframes.isEmpty() && keyframe->time() < keyframes.last()->time()) {
for (size_t i = 0; i < keyframes.size(); ++i) {
if (keyframe->time() < keyframes[i]->time()) {
keyframes.insert(i, keyframe.release());
return;
}
}
}
keyframes.append(keyframe.release());
}
PassOwnPtr<CCTimingFunction> cloneTimingFunction(const CCTimingFunction* timingFunction)
{
ASSERT(timingFunction);
OwnPtr<CCAnimationCurve> curve(timingFunction->clone());
return adoptPtr(static_cast<CCTimingFunction*>(curve.leakPtr()));
}
} // namespace
CCKeyframe::CCKeyframe(double time, PassOwnPtr<CCTimingFunction> timingFunction)
: m_time(time)
, m_timingFunction(timingFunction)
{
}
CCKeyframe::~CCKeyframe()
{
}
double CCKeyframe::time() const
{
return m_time;
}
const CCTimingFunction* CCKeyframe::timingFunction() const
{
return m_timingFunction.get();
}
PassOwnPtr<CCFloatKeyframe> CCFloatKeyframe::create(double time, float value, PassOwnPtr<CCTimingFunction> timingFunction)
{
return adoptPtr(new CCFloatKeyframe(time, value, timingFunction));
}
CCFloatKeyframe::CCFloatKeyframe(double time, float value, PassOwnPtr<CCTimingFunction> timingFunction)
: CCKeyframe(time, timingFunction)
, m_value(value)
{
}
CCFloatKeyframe::~CCFloatKeyframe()
{
}
float CCFloatKeyframe::value() const
{
return m_value;
}
PassOwnPtr<CCFloatKeyframe> CCFloatKeyframe::clone() const
{
return CCFloatKeyframe::create(time(), value(), timingFunction() ? cloneTimingFunction(timingFunction()) : nullptr);
}
PassOwnPtr<CCTransformKeyframe> CCTransformKeyframe::create(double time, const WebKit::WebTransformOperations& value, PassOwnPtr<CCTimingFunction> timingFunction)
{
return adoptPtr(new CCTransformKeyframe(time, value, timingFunction));
}
CCTransformKeyframe::CCTransformKeyframe(double time, const WebKit::WebTransformOperations& value, PassOwnPtr<CCTimingFunction> timingFunction)
: CCKeyframe(time, timingFunction)
, m_value(value)
{
}
CCTransformKeyframe::~CCTransformKeyframe()
{
}
const WebKit::WebTransformOperations& CCTransformKeyframe::value() const
{
return m_value;
}
PassOwnPtr<CCTransformKeyframe> CCTransformKeyframe::clone() const
{
return CCTransformKeyframe::create(time(), value(), timingFunction() ? cloneTimingFunction(timingFunction()) : nullptr);
}
PassOwnPtr<CCKeyframedFloatAnimationCurve> CCKeyframedFloatAnimationCurve::create()
{
return adoptPtr(new CCKeyframedFloatAnimationCurve);
}
CCKeyframedFloatAnimationCurve::CCKeyframedFloatAnimationCurve()
{
}
CCKeyframedFloatAnimationCurve::~CCKeyframedFloatAnimationCurve()
{
}
void CCKeyframedFloatAnimationCurve::addKeyframe(PassOwnPtr<CCFloatKeyframe> keyframe)
{
insertKeyframe(keyframe, m_keyframes);
}
double CCKeyframedFloatAnimationCurve::duration() const
{
return m_keyframes.last()->time() - m_keyframes.first()->time();
}
PassOwnPtr<CCAnimationCurve> CCKeyframedFloatAnimationCurve::clone() const
{
OwnPtr<CCKeyframedFloatAnimationCurve> toReturn(CCKeyframedFloatAnimationCurve::create());
for (size_t i = 0; i < m_keyframes.size(); ++i)
toReturn->addKeyframe(m_keyframes[i]->clone());
return toReturn.release();
}
float CCKeyframedFloatAnimationCurve::getValue(double t) const
{
if (t <= m_keyframes.first()->time())
return m_keyframes.first()->value();
if (t >= m_keyframes.last()->time())
return m_keyframes.last()->value();
size_t i = 0;
for (; i < m_keyframes.size() - 1; ++i) {
if (t < m_keyframes[i+1]->time())
break;
}
float progress = static_cast<float>((t - m_keyframes[i]->time()) / (m_keyframes[i+1]->time() - m_keyframes[i]->time()));
if (m_keyframes[i]->timingFunction())
progress = m_keyframes[i]->timingFunction()->getValue(progress);
return m_keyframes[i]->value() + (m_keyframes[i+1]->value() - m_keyframes[i]->value()) * progress;
}
PassOwnPtr<CCKeyframedTransformAnimationCurve> CCKeyframedTransformAnimationCurve::create()
{
return adoptPtr(new CCKeyframedTransformAnimationCurve);
}
CCKeyframedTransformAnimationCurve::CCKeyframedTransformAnimationCurve()
{
}
CCKeyframedTransformAnimationCurve::~CCKeyframedTransformAnimationCurve()
{
}
void CCKeyframedTransformAnimationCurve::addKeyframe(PassOwnPtr<CCTransformKeyframe> keyframe)
{
insertKeyframe(keyframe, m_keyframes);
}
double CCKeyframedTransformAnimationCurve::duration() const
{
return m_keyframes.last()->time() - m_keyframes.first()->time();
}
PassOwnPtr<CCAnimationCurve> CCKeyframedTransformAnimationCurve::clone() const
{
OwnPtr<CCKeyframedTransformAnimationCurve> toReturn(CCKeyframedTransformAnimationCurve::create());
for (size_t i = 0; i < m_keyframes.size(); ++i)
toReturn->addKeyframe(m_keyframes[i]->clone());
return toReturn.release();
}
WebTransformationMatrix CCKeyframedTransformAnimationCurve::getValue(double t) const
{
if (t <= m_keyframes.first()->time())
return m_keyframes.first()->value().apply();
if (t >= m_keyframes.last()->time())
return m_keyframes.last()->value().apply();
size_t i = 0;
for (; i < m_keyframes.size() - 1; ++i) {
if (t < m_keyframes[i+1]->time())
break;
}
double progress = (t - m_keyframes[i]->time()) / (m_keyframes[i+1]->time() - m_keyframes[i]->time());
if (m_keyframes[i]->timingFunction())
progress = m_keyframes[i]->timingFunction()->getValue(progress);
return m_keyframes[i+1]->value().blend(m_keyframes[i]->value(), progress);
}
} // namespace WebCore
|
