qstyleanimation.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtWidgets module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
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 https://www.qt.io/terms-conditions. For further-
15** information use the contact form at https://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 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
29** Qt Foundation. The licenses are as published by the Free Software-
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3-
31** included in the packaging of this file. Please review the following-
32** information to ensure the GNU General Public License requirements will-
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34** https://www.gnu.org/licenses/gpl-3.0.html.-
35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#include "qstyleanimation_p.h"-
41-
42#ifndef QT_NO_ANIMATION-
43-
44#include <qcoreapplication.h>-
45#include <qwidget.h>-
46#include <qevent.h>-
47-
48QT_BEGIN_NAMESPACE-
49-
50static const qreal ScrollBarFadeOutDuration = 200.0;-
51static const qreal ScrollBarFadeOutDelay = 450.0;-
52-
53QStyleAnimation::QStyleAnimation(QObject *target) : QAbstractAnimation(target),-
54 _delay(0), _duration(-1), _startTime(QTime::currentTime()), _fps(ThirtyFps), _skip(0)-
55{-
56}
never executed: end of block
0
57-
58QStyleAnimation::~QStyleAnimation()-
59{-
60}-
61-
62QObject *QStyleAnimation::target() const-
63{-
64 return parent();
never executed: return parent();
0
65}-
66-
67int QStyleAnimation::duration() const-
68{-
69 return _duration;
never executed: return _duration;
0
70}-
71-
72void QStyleAnimation::setDuration(int duration)-
73{-
74 _duration = duration;-
75}
never executed: end of block
0
76-
77int QStyleAnimation::delay() const-
78{-
79 return _delay;
never executed: return _delay;
0
80}-
81-
82void QStyleAnimation::setDelay(int delay)-
83{-
84 _delay = delay;-
85}
never executed: end of block
0
86-
87QTime QStyleAnimation::startTime() const-
88{-
89 return _startTime;
never executed: return _startTime;
0
90}-
91-
92void QStyleAnimation::setStartTime(const QTime &time)-
93{-
94 _startTime = time;-
95}
never executed: end of block
0
96-
97QStyleAnimation::FrameRate QStyleAnimation::frameRate() const-
98{-
99 return _fps;
never executed: return _fps;
0
100}-
101-
102void QStyleAnimation::setFrameRate(FrameRate fps)-
103{-
104 _fps = fps;-
105}
never executed: end of block
0
106-
107void QStyleAnimation::updateTarget()-
108{-
109 QEvent event(QEvent::StyleAnimationUpdate);-
110 event.setAccepted(false);-
111 QCoreApplication::sendEvent(target(), &event);-
112 if (!event.isAccepted())
!event.isAccepted()Description
TRUEnever evaluated
FALSEnever evaluated
0
113 stop();
never executed: stop();
0
114}
never executed: end of block
0
115-
116void QStyleAnimation::start()-
117{-
118 _skip = 0;-
119 QAbstractAnimation::start(DeleteWhenStopped);-
120}
never executed: end of block
0
121-
122bool QStyleAnimation::isUpdateNeeded() const-
123{-
124 return currentTime() > _delay;
never executed: return currentTime() > _delay;
0
125}-
126-
127void QStyleAnimation::updateCurrentTime(int)-
128{-
129 if (++_skip >= _fps) {
++_skip >= _fpsDescription
TRUEnever evaluated
FALSEnever evaluated
0
130 _skip = 0;-
131 if (target() && isUpdateNeeded())
target()Description
TRUEnever evaluated
FALSEnever evaluated
isUpdateNeeded()Description
TRUEnever evaluated
FALSEnever evaluated
0
132 updateTarget();
never executed: updateTarget();
0
133 }
never executed: end of block
0
134}
never executed: end of block
0
135-
136QProgressStyleAnimation::QProgressStyleAnimation(int speed, QObject *target) :-
137 QStyleAnimation(target), _speed(speed), _step(-1)-
138{-
139}
never executed: end of block
0
140-
141int QProgressStyleAnimation::animationStep() const-
142{-
143 return currentTime() / (1000.0 / _speed);
never executed: return currentTime() / (1000.0 / _speed);
0
144}-
145-
146int QProgressStyleAnimation::progressStep(int width) const-
147{-
148 int step = animationStep();-
149 int progress = (step * width / _speed) % width;-
150 if (((step * width / _speed) % (2 * width)) >= width)
((step * width...dth)) >= widthDescription
TRUEnever evaluated
FALSEnever evaluated
0
151 progress = width - progress;
never executed: progress = width - progress;
0
152 return progress;
never executed: return progress;
0
153}-
154-
155int QProgressStyleAnimation::speed() const-
156{-
157 return _speed;
never executed: return _speed;
0
158}-
159-
160void QProgressStyleAnimation::setSpeed(int speed)-
161{-
162 _speed = speed;-
163}
never executed: end of block
0
164-
165bool QProgressStyleAnimation::isUpdateNeeded() const-
166{-
167 if (QStyleAnimation::isUpdateNeeded()) {
QStyleAnimatio...UpdateNeeded()Description
TRUEnever evaluated
FALSEnever evaluated
0
168 int current = animationStep();-
169 if (_step == -1 || _step != current)
_step == -1Description
TRUEnever evaluated
FALSEnever evaluated
_step != currentDescription
TRUEnever evaluated
FALSEnever evaluated
0
170 {-
171 _step = current;-
172 return true;
never executed: return true;
0
173 }-
174 }
never executed: end of block
0
175 return false;
never executed: return false;
0
176}-
177-
178QNumberStyleAnimation::QNumberStyleAnimation(QObject *target) :-
179 QStyleAnimation(target), _start(0.0), _end(1.0), _prev(0.0)-
180{-
181 setDuration(250);-
182}
never executed: end of block
0
183-
184qreal QNumberStyleAnimation::startValue() const-
185{-
186 return _start;
never executed: return _start;
0
187}-
188-
189void QNumberStyleAnimation::setStartValue(qreal value)-
190{-
191 _start = value;-
192}
never executed: end of block
0
193-
194qreal QNumberStyleAnimation::endValue() const-
195{-
196 return _end;
never executed: return _end;
0
197}-
198-
199void QNumberStyleAnimation::setEndValue(qreal value)-
200{-
201 _end = value;-
202}
never executed: end of block
0
203-
204qreal QNumberStyleAnimation::currentValue() const-
205{-
206 qreal step = qreal(currentTime() - delay()) / (duration() - delay());-
207 return _start + qMax(qreal(0), step) * (_end - _start);
never executed: return _start + qMax(qreal(0), step) * (_end - _start);
0
208}-
209-
210bool QNumberStyleAnimation::isUpdateNeeded() const-
211{-
212 if (QStyleAnimation::isUpdateNeeded()) {
QStyleAnimatio...UpdateNeeded()Description
TRUEnever evaluated
FALSEnever evaluated
0
213 qreal current = currentValue();-
214 if (!qFuzzyCompare(_prev, current))
!qFuzzyCompare(_prev, current)Description
TRUEnever evaluated
FALSEnever evaluated
0
215 {-
216 _prev = current;-
217 return true;
never executed: return true;
0
218 }-
219 }
never executed: end of block
0
220 return false;
never executed: return false;
0
221}-
222-
223QBlendStyleAnimation::QBlendStyleAnimation(Type type, QObject *target) :-
224 QStyleAnimation(target), _type(type)-
225{-
226 setDuration(250);-
227}
never executed: end of block
0
228-
229QImage QBlendStyleAnimation::startImage() const-
230{-
231 return _start;
never executed: return _start;
0
232}-
233-
234void QBlendStyleAnimation::setStartImage(const QImage& image)-
235{-
236 _start = image;-
237}
never executed: end of block
0
238-
239QImage QBlendStyleAnimation::endImage() const-
240{-
241 return _end;
never executed: return _end;
0
242}-
243-
244void QBlendStyleAnimation::setEndImage(const QImage& image)-
245{-
246 _end = image;-
247}
never executed: end of block
0
248-
249QImage QBlendStyleAnimation::currentImage() const-
250{-
251 return _current;
never executed: return _current;
0
252}-
253-
254/*! \internal-
255-
256 A helper function to blend two images.-
257-
258 The result consists of ((alpha)*startImage) + ((1-alpha)*endImage)-
259-
260*/-
261static QImage blendedImage(const QImage &start, const QImage &end, float alpha)-
262{-
263 if (start.isNull() || end.isNull())
start.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
end.isNull()Description
TRUEnever evaluated
FALSEnever evaluated
0
264 return QImage();
never executed: return QImage();
0
265-
266 QImage blended;-
267 const int a = qRound(alpha*256);-
268 const int ia = 256 - a;-
269 const int sw = start.width();-
270 const int sh = start.height();-
271 const int bpl = start.bytesPerLine();-
272 switch (start.depth()) {-
273 case 32:
never executed: case 32:
0
274 {-
275 blended = QImage(sw, sh, start.format());-
276 blended.setDevicePixelRatio(start.devicePixelRatio());-
277 uchar *mixed_data = blended.bits();-
278 const uchar *back_data = start.bits();-
279 const uchar *front_data = end.bits();-
280 for (int sy = 0; sy < sh; sy++) {
sy < shDescription
TRUEnever evaluated
FALSEnever evaluated
0
281 quint32* mixed = (quint32*)mixed_data;-
282 const quint32* back = (const quint32*)back_data;-
283 const quint32* front = (const quint32*)front_data;-
284 for (int sx = 0; sx < sw; sx++) {
sx < swDescription
TRUEnever evaluated
FALSEnever evaluated
0
285 quint32 bp = back[sx];-
286 quint32 fp = front[sx];-
287 mixed[sx] = qRgba ((qRed(bp)*ia + qRed(fp)*a)>>8,-
288 (qGreen(bp)*ia + qGreen(fp)*a)>>8,-
289 (qBlue(bp)*ia + qBlue(fp)*a)>>8,-
290 (qAlpha(bp)*ia + qAlpha(fp)*a)>>8);-
291 }
never executed: end of block
0
292 mixed_data += bpl;-
293 back_data += bpl;-
294 front_data += bpl;-
295 }
never executed: end of block
0
296 }-
297 default:
code before this statement never executed: default:
never executed: default:
0
298 break;
never executed: break;
0
299 }-
300 return blended;
never executed: return blended;
0
301}-
302-
303void QBlendStyleAnimation::updateCurrentTime(int time)-
304{-
305 QStyleAnimation::updateCurrentTime(time);-
306-
307 float alpha = 1.0;-
308 if (duration() > 0) {
duration() > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
309 if (_type == Pulse) {
_type == PulseDescription
TRUEnever evaluated
FALSEnever evaluated
0
310 time = time % duration() * 2;-
311 if (time > duration())
time > duration()Description
TRUEnever evaluated
FALSEnever evaluated
0
312 time = duration() * 2 - time;
never executed: time = duration() * 2 - time;
0
313 }
never executed: end of block
0
314-
315 alpha = time / static_cast<float>(duration());-
316-
317 if (_type == Transition && time > duration()) {
_type == TransitionDescription
TRUEnever evaluated
FALSEnever evaluated
time > duration()Description
TRUEnever evaluated
FALSEnever evaluated
0
318 alpha = 1.0;-
319 stop();-
320 }
never executed: end of block
0
321 } else if (time > 0) {
never executed: end of block
time > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
322 stop();-
323 }
never executed: end of block
0
324-
325 _current = blendedImage(_start, _end, alpha);-
326}
never executed: end of block
0
327-
328QScrollbarStyleAnimation::QScrollbarStyleAnimation(Mode mode, QObject *target) : QNumberStyleAnimation(target), _mode(mode), _active(false)-
329{-
330 switch (mode) {-
331 case Activating:
never executed: case Activating:
0
332 setDuration(ScrollBarFadeOutDuration);-
333 setStartValue(0.0);-
334 setEndValue(1.0);-
335 break;
never executed: break;
0
336 case Deactivating:
never executed: case Deactivating:
0
337 setDuration(ScrollBarFadeOutDelay + ScrollBarFadeOutDuration);-
338 setDelay(ScrollBarFadeOutDelay);-
339 setStartValue(1.0);-
340 setEndValue(0.0);-
341 break;
never executed: break;
0
342 }-
343}
never executed: end of block
0
344-
345QScrollbarStyleAnimation::Mode QScrollbarStyleAnimation::mode() const-
346{-
347 return _mode;
never executed: return _mode;
0
348}-
349-
350bool QScrollbarStyleAnimation::wasActive() const-
351{-
352 return _active;
never executed: return _active;
0
353}-
354-
355void QScrollbarStyleAnimation::setActive(bool active)-
356{-
357 _active = active;-
358}
never executed: end of block
0
359-
360void QScrollbarStyleAnimation::updateCurrentTime(int time)-
361{-
362 QNumberStyleAnimation::updateCurrentTime(time);-
363 if (_mode == Deactivating && qFuzzyIsNull(currentValue()))
_mode == DeactivatingDescription
TRUEnever evaluated
FALSEnever evaluated
qFuzzyIsNull(currentValue())Description
TRUEnever evaluated
FALSEnever evaluated
0
364 target()->setProperty("visible", false);
never executed: target()->setProperty("visible", false);
0
365}
never executed: end of block
0
366-
367QT_END_NAMESPACE-
368-
369#include "moc_qstyleanimation_p.cpp"-
370-
371#endif //QT_NO_ANIMATION-
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