qstyleanimation.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2015 The Qt Company Ltd.-
4** Contact: http://www.qt.io/licensing/-
5**-
6** This file is part of the QtWidgets module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL21$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
11** accordance with the commercial license agreement provided with the-
12** Software or, alternatively, in accordance with the terms contained in-
13** a written agreement between you and The Qt Company. For licensing terms-
14** and conditions see http://www.qt.io/terms-conditions. For further-
15** information use the contact form at http://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 2.1 or version 3 as published by the Free-
20** Software Foundation and appearing in the file LICENSE.LGPLv21 and-
21** LICENSE.LGPLv3 included in the packaging of this file. Please review the-
22** following information to ensure the GNU Lesser General Public License-
23** requirements will be met: https://www.gnu.org/licenses/lgpl.html and-
24** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.-
25**-
26** As a special exception, The Qt Company gives you certain additional-
27** rights. These rights are described in The Qt Company LGPL Exception-
28** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.-
29**-
30** $QT_END_LICENSE$-
31**-
32****************************************************************************/-
33-
34#include "qstyleanimation_p.h"-
35-
36#ifndef QT_NO_ANIMATION-
37-
38#include <qcoreapplication.h>-
39#include <qwidget.h>-
40#include <qevent.h>-
41-
42QT_BEGIN_NAMESPACE-
43-
44static const qreal ScrollBarFadeOutDuration = 200.0;-
45static const qreal ScrollBarFadeOutDelay = 450.0;-
46-
47QStyleAnimation::QStyleAnimation(QObject *target) : QAbstractAnimation(target),-
48 _delay(0), _duration(-1), _startTime(QTime::currentTime()), _fps(ThirtyFps), _skip(0)-
49{-
50}
never executed: end of block
0
51-
52QStyleAnimation::~QStyleAnimation()-
53{-
54}-
55-
56QObject *QStyleAnimation::target() const-
57{-
58 return parent();
never executed: return parent();
0
59}-
60-
61int QStyleAnimation::duration() const-
62{-
63 return _duration;
never executed: return _duration;
0
64}-
65-
66void QStyleAnimation::setDuration(int duration)-
67{-
68 _duration = duration;-
69}
never executed: end of block
0
70-
71int QStyleAnimation::delay() const-
72{-
73 return _delay;
never executed: return _delay;
0
74}-
75-
76void QStyleAnimation::setDelay(int delay)-
77{-
78 _delay = delay;-
79}
never executed: end of block
0
80-
81QTime QStyleAnimation::startTime() const-
82{-
83 return _startTime;
never executed: return _startTime;
0
84}-
85-
86void QStyleAnimation::setStartTime(const QTime &time)-
87{-
88 _startTime = time;-
89}
never executed: end of block
0
90-
91QStyleAnimation::FrameRate QStyleAnimation::frameRate() const-
92{-
93 return _fps;
never executed: return _fps;
0
94}-
95-
96void QStyleAnimation::setFrameRate(FrameRate fps)-
97{-
98 _fps = fps;-
99}
never executed: end of block
0
100-
101void QStyleAnimation::updateTarget()-
102{-
103 QEvent event(QEvent::StyleAnimationUpdate);-
104 event.setAccepted(false);-
105 QCoreApplication::sendEvent(target(), &event);-
106 if (!event.isAccepted())
!event.isAccepted()Description
TRUEnever evaluated
FALSEnever evaluated
0
107 stop();
never executed: stop();
0
108}
never executed: end of block
0
109-
110void QStyleAnimation::start()-
111{-
112 _skip = 0;-
113 QAbstractAnimation::start(DeleteWhenStopped);-
114}
never executed: end of block
0
115-
116bool QStyleAnimation::isUpdateNeeded() const-
117{-
118 return currentTime() > _delay;
never executed: return currentTime() > _delay;
0
119}-
120-
121void QStyleAnimation::updateCurrentTime(int)-
122{-
123 if (++_skip >= _fps) {
++_skip >= _fpsDescription
TRUEnever evaluated
FALSEnever evaluated
0
124 _skip = 0;-
125 if (target() && isUpdateNeeded())
target()Description
TRUEnever evaluated
FALSEnever evaluated
isUpdateNeeded()Description
TRUEnever evaluated
FALSEnever evaluated
0
126 updateTarget();
never executed: updateTarget();
0
127 }
never executed: end of block
0
128}
never executed: end of block
0
129-
130QProgressStyleAnimation::QProgressStyleAnimation(int speed, QObject *target) :-
131 QStyleAnimation(target), _speed(speed), _step(-1)-
132{-
133}
never executed: end of block
0
134-
135int QProgressStyleAnimation::animationStep() const-
136{-
137 return currentTime() / (1000.0 / _speed);
never executed: return currentTime() / (1000.0 / _speed);
0
138}-
139-
140int QProgressStyleAnimation::progressStep(int width) const-
141{-
142 int step = animationStep();-
143 int progress = (step * width / _speed) % width;-
144 if (((step * width / _speed) % (2 * width)) >= width)
((step * width...dth)) >= widthDescription
TRUEnever evaluated
FALSEnever evaluated
0
145 progress = width - progress;
never executed: progress = width - progress;
0
146 return progress;
never executed: return progress;
0
147}-
148-
149int QProgressStyleAnimation::speed() const-
150{-
151 return _speed;
never executed: return _speed;
0
152}-
153-
154void QProgressStyleAnimation::setSpeed(int speed)-
155{-
156 _speed = speed;-
157}
never executed: end of block
0
158-
159bool QProgressStyleAnimation::isUpdateNeeded() const-
160{-
161 if (QStyleAnimation::isUpdateNeeded()) {
QStyleAnimatio...UpdateNeeded()Description
TRUEnever evaluated
FALSEnever evaluated
0
162 int current = animationStep();-
163 if (_step == -1 || _step != current)
_step == -1Description
TRUEnever evaluated
FALSEnever evaluated
_step != currentDescription
TRUEnever evaluated
FALSEnever evaluated
0
164 {-
165 _step = current;-
166 return true;
never executed: return true;
0
167 }-
168 }
never executed: end of block
0
169 return false;
never executed: return false;
0
170}-
171-
172QNumberStyleAnimation::QNumberStyleAnimation(QObject *target) :-
173 QStyleAnimation(target), _start(0.0), _end(1.0), _prev(0.0)-
174{-
175 setDuration(250);-
176}
never executed: end of block
0
177-
178qreal QNumberStyleAnimation::startValue() const-
179{-
180 return _start;
never executed: return _start;
0
181}-
182-
183void QNumberStyleAnimation::setStartValue(qreal value)-
184{-
185 _start = value;-
186}
never executed: end of block
0
187-
188qreal QNumberStyleAnimation::endValue() const-
189{-
190 return _end;
never executed: return _end;
0
191}-
192-
193void QNumberStyleAnimation::setEndValue(qreal value)-
194{-
195 _end = value;-
196}
never executed: end of block
0
197-
198qreal QNumberStyleAnimation::currentValue() const-
199{-
200 qreal step = qreal(currentTime() - delay()) / (duration() - delay());-
201 return _start + qMax(qreal(0), step) * (_end - _start);
never executed: return _start + qMax(qreal(0), step) * (_end - _start);
0
202}-
203-
204bool QNumberStyleAnimation::isUpdateNeeded() const-
205{-
206 if (QStyleAnimation::isUpdateNeeded()) {
QStyleAnimatio...UpdateNeeded()Description
TRUEnever evaluated
FALSEnever evaluated
0
207 qreal current = currentValue();-
208 if (!qFuzzyCompare(_prev, current))
!qFuzzyCompare(_prev, current)Description
TRUEnever evaluated
FALSEnever evaluated
0
209 {-
210 _prev = current;-
211 return true;
never executed: return true;
0
212 }-
213 }
never executed: end of block
0
214 return false;
never executed: return false;
0
215}-
216-
217QBlendStyleAnimation::QBlendStyleAnimation(Type type, QObject *target) :-
218 QStyleAnimation(target), _type(type)-
219{-
220 setDuration(250);-
221}
never executed: end of block
0
222-
223QImage QBlendStyleAnimation::startImage() const-
224{-
225 return _start;
never executed: return _start;
0
226}-
227-
228void QBlendStyleAnimation::setStartImage(const QImage& image)-
229{-
230 _start = image;-
231}
never executed: end of block
0
232-
233QImage QBlendStyleAnimation::endImage() const-
234{-
235 return _end;
never executed: return _end;
0
236}-
237-
238void QBlendStyleAnimation::setEndImage(const QImage& image)-
239{-
240 _end = image;-
241}
never executed: end of block
0
242-
243QImage QBlendStyleAnimation::currentImage() const-
244{-
245 return _current;
never executed: return _current;
0
246}-
247-
248/*! \internal-
249-
250 A helper function to blend two images.-
251-
252 The result consists of ((alpha)*startImage) + ((1-alpha)*endImage)-
253-
254*/-
255static QImage blendedImage(const QImage &start, const QImage &end, float alpha)-
256{-
257 if (start.isNull() || end.isNull())
start.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
end.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
258 return QImage();
never executed: return QImage();
0
259-
260 QImage blended;-
261 const int a = qRound(alpha*256);-
262 const int ia = 256 - a;-
263 const int sw = start.width();-
264 const int sh = start.height();-
265 const int bpl = start.bytesPerLine();-
266 switch (start.depth()) {-
267 case 32:
never executed: case 32:
0
268 {-
269 blended = QImage(sw, sh, start.format());-
270 blended.setDevicePixelRatio(start.devicePixelRatio());-
271 uchar *mixed_data = blended.bits();-
272 const uchar *back_data = start.bits();-
273 const uchar *front_data = end.bits();-
274 for (int sy = 0; sy < sh; sy++) {
sy < shDescription
TRUEnever evaluated
FALSEnever evaluated
0
275 quint32* mixed = (quint32*)mixed_data;-
276 const quint32* back = (const quint32*)back_data;-
277 const quint32* front = (const quint32*)front_data;-
278 for (int sx = 0; sx < sw; sx++) {
sx < swDescription
TRUEnever evaluated
FALSEnever evaluated
0
279 quint32 bp = back[sx];-
280 quint32 fp = front[sx];-
281 mixed[sx] = qRgba ((qRed(bp)*ia + qRed(fp)*a)>>8,-
282 (qGreen(bp)*ia + qGreen(fp)*a)>>8,-
283 (qBlue(bp)*ia + qBlue(fp)*a)>>8,-
284 (qAlpha(bp)*ia + qAlpha(fp)*a)>>8);-
285 }
never executed: end of block
0
286 mixed_data += bpl;-
287 back_data += bpl;-
288 front_data += bpl;-
289 }
never executed: end of block
0
290 }-
291 default:
code before this statement never executed: default:
never executed: default:
0
292 break;
never executed: break;
0
293 }-
294 return blended;
never executed: return blended;
0
295}-
296-
297void QBlendStyleAnimation::updateCurrentTime(int time)-
298{-
299 QStyleAnimation::updateCurrentTime(time);-
300-
301 float alpha = 1.0;-
302 if (duration() > 0) {
duration() > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
303 if (_type == Pulse) {
_type == PulseDescription
TRUEnever evaluated
FALSEnever evaluated
0
304 time = time % duration() * 2;-
305 if (time > duration())
time > duration()Description
TRUEnever evaluated
FALSEnever evaluated
0
306 time = duration() * 2 - time;
never executed: time = duration() * 2 - time;
0
307 }
never executed: end of block
0
308-
309 alpha = time / static_cast<float>(duration());-
310-
311 if (_type == Transition && time > duration()) {
_type == TransitionDescription
TRUEnever evaluated
FALSEnever evaluated
time > duration()Description
TRUEnever evaluated
FALSEnever evaluated
0
312 alpha = 1.0;-
313 stop();-
314 }
never executed: end of block
0
315 } else if (time > 0) {
never executed: end of block
time > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
316 stop();-
317 }
never executed: end of block
0
318-
319 _current = blendedImage(_start, _end, alpha);-
320}
never executed: end of block
0
321-
322QScrollbarStyleAnimation::QScrollbarStyleAnimation(Mode mode, QObject *target) : QNumberStyleAnimation(target), _mode(mode), _active(false)-
323{-
324 switch (mode) {-
325 case Activating:
never executed: case Activating:
0
326 setDuration(ScrollBarFadeOutDuration);-
327 setStartValue(0.0);-
328 setEndValue(1.0);-
329 break;
never executed: break;
0
330 case Deactivating:
never executed: case Deactivating:
0
331 setDuration(ScrollBarFadeOutDelay + ScrollBarFadeOutDuration);-
332 setDelay(ScrollBarFadeOutDelay);-
333 setStartValue(1.0);-
334 setEndValue(0.0);-
335 break;
never executed: break;
0
336 }-
337}
never executed: end of block
0
338-
339QScrollbarStyleAnimation::Mode QScrollbarStyleAnimation::mode() const-
340{-
341 return _mode;
never executed: return _mode;
0
342}-
343-
344bool QScrollbarStyleAnimation::wasActive() const-
345{-
346 return _active;
never executed: return _active;
0
347}-
348-
349void QScrollbarStyleAnimation::setActive(bool active)-
350{-
351 _active = active;-
352}
never executed: end of block
0
353-
354void QScrollbarStyleAnimation::updateCurrentTime(int time)-
355{-
356 QNumberStyleAnimation::updateCurrentTime(time);-
357 if (_mode == Deactivating && qFuzzyIsNull(currentValue()))
_mode == DeactivatingDescription
TRUEnever evaluated
FALSEnever evaluated
qFuzzyIsNull(currentValue())Description
TRUEnever evaluated
FALSEnever evaluated
0
358 target()->setProperty("visible", false);
never executed: target()->setProperty("visible", false);
0
359}
never executed: end of block
0
360-
361QT_END_NAMESPACE-
362-
363#include "moc_qstyleanimation_p.cpp"-
364-
365#endif //QT_NO_ANIMATION-
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