source: trunk/demos/composition/composition.cpp

Last change on this file was 846, checked in by Dmitry A. Kuminov, 14 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
File size: 20.4 KB
RevLine 
[2]1/****************************************************************************
2**
[846]3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
[561]4** All rights reserved.
5** Contact: Nokia Corporation (qt-info@nokia.com)
[2]6**
7** This file is part of the demonstration applications of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
[561]24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
[2]27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
35**
[561]36** If you have questions regarding the use of this file, please contact
37** Nokia at qt-info@nokia.com.
[2]38** $QT_END_LICENSE$
39**
40****************************************************************************/
41
42#include "composition.h"
43#include <QBoxLayout>
44#include <QRadioButton>
45#include <QTimer>
46#include <QDateTime>
47#include <QSlider>
48#include <QMouseEvent>
49#include <qmath.h>
50
[769]51const int animationInterval = 15; // update every 16 ms = ~60FPS
52
[2]53CompositionWidget::CompositionWidget(QWidget *parent)
54 : QWidget(parent)
55{
56 CompositionRenderer *view = new CompositionRenderer(this);
57
58 QGroupBox *mainGroup = new QGroupBox(parent);
59 mainGroup->setTitle(tr("Composition Modes"));
60
61 QGroupBox *modesGroup = new QGroupBox(mainGroup);
62 modesGroup->setTitle(tr("Mode"));
63
64 rbClear = new QRadioButton(tr("Clear"), modesGroup);
65 connect(rbClear, SIGNAL(clicked()), view, SLOT(setClearMode()));
66 rbSource = new QRadioButton(tr("Source"), modesGroup);
67 connect(rbSource, SIGNAL(clicked()), view, SLOT(setSourceMode()));
68 rbDest = new QRadioButton(tr("Destination"), modesGroup);
69 connect(rbDest, SIGNAL(clicked()), view, SLOT(setDestMode()));
70 rbSourceOver = new QRadioButton(tr("Source Over"), modesGroup);
71 connect(rbSourceOver, SIGNAL(clicked()), view, SLOT(setSourceOverMode()));
72 rbDestOver = new QRadioButton(tr("Destination Over"), modesGroup);
73 connect(rbDestOver, SIGNAL(clicked()), view, SLOT(setDestOverMode()));
74 rbSourceIn = new QRadioButton(tr("Source In"), modesGroup);
75 connect(rbSourceIn, SIGNAL(clicked()), view, SLOT(setSourceInMode()));
76 rbDestIn = new QRadioButton(tr("Dest In"), modesGroup);
77 connect(rbDestIn, SIGNAL(clicked()), view, SLOT(setDestInMode()));
78 rbSourceOut = new QRadioButton(tr("Source Out"), modesGroup);
79 connect(rbSourceOut, SIGNAL(clicked()), view, SLOT(setSourceOutMode()));
80 rbDestOut = new QRadioButton(tr("Dest Out"), modesGroup);
81 connect(rbDestOut, SIGNAL(clicked()), view, SLOT(setDestOutMode()));
82 rbSourceAtop = new QRadioButton(tr("Source Atop"), modesGroup);
83 connect(rbSourceAtop, SIGNAL(clicked()), view, SLOT(setSourceAtopMode()));
84 rbDestAtop = new QRadioButton(tr("Dest Atop"), modesGroup);
85 connect(rbDestAtop, SIGNAL(clicked()), view, SLOT(setDestAtopMode()));
86 rbXor = new QRadioButton(tr("Xor"), modesGroup);
87 connect(rbXor, SIGNAL(clicked()), view, SLOT(setXorMode()));
88
89 rbPlus = new QRadioButton(tr("Plus"), modesGroup);
90 connect(rbPlus, SIGNAL(clicked()), view, SLOT(setPlusMode()));
91 rbMultiply = new QRadioButton(tr("Multiply"), modesGroup);
92 connect(rbMultiply, SIGNAL(clicked()), view, SLOT(setMultiplyMode()));
93 rbScreen = new QRadioButton(tr("Screen"), modesGroup);
94 connect(rbScreen, SIGNAL(clicked()), view, SLOT(setScreenMode()));
95 rbOverlay = new QRadioButton(tr("Overlay"), modesGroup);
96 connect(rbOverlay, SIGNAL(clicked()), view, SLOT(setOverlayMode()));
97 rbDarken = new QRadioButton(tr("Darken"), modesGroup);
98 connect(rbDarken, SIGNAL(clicked()), view, SLOT(setDarkenMode()));
99 rbLighten = new QRadioButton(tr("Lighten"), modesGroup);
100 connect(rbLighten, SIGNAL(clicked()), view, SLOT(setLightenMode()));
101 rbColorDodge = new QRadioButton(tr("Color Dodge"), modesGroup);
102 connect(rbColorDodge, SIGNAL(clicked()), view, SLOT(setColorDodgeMode()));
103 rbColorBurn = new QRadioButton(tr("Color Burn"), modesGroup);
104 connect(rbColorBurn, SIGNAL(clicked()), view, SLOT(setColorBurnMode()));
105 rbHardLight = new QRadioButton(tr("Hard Light"), modesGroup);
106 connect(rbHardLight, SIGNAL(clicked()), view, SLOT(setHardLightMode()));
107 rbSoftLight = new QRadioButton(tr("Soft Light"), modesGroup);
108 connect(rbSoftLight, SIGNAL(clicked()), view, SLOT(setSoftLightMode()));
109 rbDifference = new QRadioButton(tr("Difference"), modesGroup);
110 connect(rbDifference, SIGNAL(clicked()), view, SLOT(setDifferenceMode()));
111 rbExclusion = new QRadioButton(tr("Exclusion"), modesGroup);
112 connect(rbExclusion, SIGNAL(clicked()), view, SLOT(setExclusionMode()));
113
114 QGroupBox *circleColorGroup = new QGroupBox(mainGroup);
115 circleColorGroup->setTitle(tr("Circle color"));
116 QSlider *circleColorSlider = new QSlider(Qt::Horizontal, circleColorGroup);
117 circleColorSlider->setRange(0, 359);
118 circleColorSlider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
119 connect(circleColorSlider, SIGNAL(valueChanged(int)), view, SLOT(setCircleColor(int)));
120
121 QGroupBox *circleAlphaGroup = new QGroupBox(mainGroup);
122 circleAlphaGroup->setTitle(tr("Circle alpha"));
123 QSlider *circleAlphaSlider = new QSlider(Qt::Horizontal, circleAlphaGroup);
124 circleAlphaSlider->setRange(0, 255);
125 circleAlphaSlider->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
126 connect(circleAlphaSlider, SIGNAL(valueChanged(int)), view, SLOT(setCircleAlpha(int)));
127
128 QPushButton *showSourceButton = new QPushButton(mainGroup);
129 showSourceButton->setText(tr("Show Source"));
130#if defined(QT_OPENGL_SUPPORT) && !defined(QT_OPENGL_ES)
131 QPushButton *enableOpenGLButton = new QPushButton(mainGroup);
132 enableOpenGLButton->setText(tr("Use OpenGL"));
133 enableOpenGLButton->setCheckable(true);
134 enableOpenGLButton->setChecked(view->usesOpenGL());
135
136 if (!QGLFormat::hasOpenGL() || !QGLPixelBuffer::hasOpenGLPbuffers())
137 enableOpenGLButton->hide();
138#endif
139 QPushButton *whatsThisButton = new QPushButton(mainGroup);
140 whatsThisButton->setText(tr("What's This?"));
141 whatsThisButton->setCheckable(true);
142
143 QPushButton *animateButton = new QPushButton(mainGroup);
144 animateButton->setText(tr("Animated"));
145 animateButton->setCheckable(true);
146 animateButton->setChecked(true);
147
148 QHBoxLayout *viewLayout = new QHBoxLayout(this);
149 viewLayout->addWidget(view);
150 viewLayout->addWidget(mainGroup);
151
152 QVBoxLayout *mainGroupLayout = new QVBoxLayout(mainGroup);
153 mainGroupLayout->addWidget(circleColorGroup);
154 mainGroupLayout->addWidget(circleAlphaGroup);
155 mainGroupLayout->addWidget(modesGroup);
156 mainGroupLayout->addStretch();
157 mainGroupLayout->addWidget(animateButton);
158 mainGroupLayout->addWidget(whatsThisButton);
159 mainGroupLayout->addWidget(showSourceButton);
160#if defined(QT_OPENGL_SUPPORT) && !defined(QT_OPENGL_ES)
161 mainGroupLayout->addWidget(enableOpenGLButton);
162#endif
163
164 QGridLayout *modesLayout = new QGridLayout(modesGroup);
165 modesLayout->addWidget(rbClear, 0, 0);
166 modesLayout->addWidget(rbSource, 1, 0);
167 modesLayout->addWidget(rbDest, 2, 0);
168 modesLayout->addWidget(rbSourceOver, 3, 0);
169 modesLayout->addWidget(rbDestOver, 4, 0);
170 modesLayout->addWidget(rbSourceIn, 5, 0);
171 modesLayout->addWidget(rbDestIn, 6, 0);
172 modesLayout->addWidget(rbSourceOut, 7, 0);
173 modesLayout->addWidget(rbDestOut, 8, 0);
174 modesLayout->addWidget(rbSourceAtop, 9, 0);
175 modesLayout->addWidget(rbDestAtop, 10, 0);
176 modesLayout->addWidget(rbXor, 11, 0);
177
178 modesLayout->addWidget(rbPlus, 0, 1);
179 modesLayout->addWidget(rbMultiply, 1, 1);
180 modesLayout->addWidget(rbScreen, 2, 1);
181 modesLayout->addWidget(rbOverlay, 3, 1);
182 modesLayout->addWidget(rbDarken, 4, 1);
183 modesLayout->addWidget(rbLighten, 5, 1);
184 modesLayout->addWidget(rbColorDodge, 6, 1);
185 modesLayout->addWidget(rbColorBurn, 7, 1);
186 modesLayout->addWidget(rbHardLight, 8, 1);
187 modesLayout->addWidget(rbSoftLight, 9, 1);
188 modesLayout->addWidget(rbDifference, 10, 1);
189 modesLayout->addWidget(rbExclusion, 11, 1);
190
191
192 QVBoxLayout *circleColorLayout = new QVBoxLayout(circleColorGroup);
193 circleColorLayout->addWidget(circleColorSlider);
194
195 QVBoxLayout *circleAlphaLayout = new QVBoxLayout(circleAlphaGroup);
196 circleAlphaLayout->addWidget(circleAlphaSlider);
197
198 view->loadDescription(":res/composition/composition.html");
199 view->loadSourceFile(":res/composition/composition.cpp");
200
201 connect(whatsThisButton, SIGNAL(clicked(bool)), view, SLOT(setDescriptionEnabled(bool)));
202 connect(view, SIGNAL(descriptionEnabledChanged(bool)), whatsThisButton, SLOT(setChecked(bool)));
203 connect(showSourceButton, SIGNAL(clicked()), view, SLOT(showSource()));
204#if defined(QT_OPENGL_SUPPORT) && !defined(QT_OPENGL_ES)
205 connect(enableOpenGLButton, SIGNAL(clicked(bool)), view, SLOT(enableOpenGL(bool)));
206#endif
207 connect(animateButton, SIGNAL(toggled(bool)), view, SLOT(setAnimationEnabled(bool)));
208
209 circleColorSlider->setValue(270);
210 circleAlphaSlider->setValue(200);
211 rbSourceOut->animateClick();
212
213 setWindowTitle(tr("Composition Modes"));
214}
215
216
217void CompositionWidget::nextMode()
218{
219 /*
220 if (!m_animation_enabled)
221 return;
222 if (rbClear->isChecked()) rbSource->animateClick();
223 if (rbSource->isChecked()) rbDest->animateClick();
224 if (rbDest->isChecked()) rbSourceOver->animateClick();
225 if (rbSourceOver->isChecked()) rbDestOver->animateClick();
226 if (rbDestOver->isChecked()) rbSourceIn->animateClick();
227 if (rbSourceIn->isChecked()) rbDestIn->animateClick();
228 if (rbDestIn->isChecked()) rbSourceOut->animateClick();
229 if (rbSourceOut->isChecked()) rbDestOut->animateClick();
230 if (rbDestOut->isChecked()) rbSourceAtop->animateClick();
231 if (rbSourceAtop->isChecked()) rbDestAtop->animateClick();
232 if (rbDestAtop->isChecked()) rbXor->animateClick();
233 if (rbXor->isChecked()) rbClear->animateClick();
234 */
235}
236
237CompositionRenderer::CompositionRenderer(QWidget *parent)
238 : ArthurFrame(parent)
239{
240 m_animation_enabled = true;
[769]241 m_animationTimer = startTimer(animationInterval);
[2]242#ifdef Q_WS_QWS
243 m_image = QPixmap(":res/composition/flower.jpg");
244 m_image.setAlphaChannel(QPixmap(":res/composition/flower_alpha.jpg"));
245#else
246 m_image = QImage(":res/composition/flower.jpg");
247 m_image.setAlphaChannel(QImage(":res/composition/flower_alpha.jpg"));
248#endif
249 m_circle_alpha = 127;
250 m_circle_hue = 255;
251 m_current_object = NoObject;
252 m_composition_mode = QPainter::CompositionMode_SourceOut;
253
254 m_circle_pos = QPoint(200, 100);
255
256 setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
257#ifdef QT_OPENGL_SUPPORT
258 m_pbuffer = 0;
259 m_pbuffer_size = 1024;
260#endif
261}
262
263QRectF rectangle_around(const QPointF &p, const QSizeF &size = QSize(250, 200))
264{
265 QRectF rect(p, size);
266 rect.translate(-size.width()/2, -size.height()/2);
267 return rect;
268}
269
[769]270void CompositionRenderer::setAnimationEnabled(bool enabled)
271{
272 if (m_animation_enabled == enabled)
273 return;
274 m_animation_enabled = enabled;
275 if (enabled) {
276 Q_ASSERT(!m_animationTimer);
277 m_animationTimer = startTimer(animationInterval);
278 } else {
279 killTimer(m_animationTimer);
280 m_animationTimer = 0;
281 }
282}
283
[2]284void CompositionRenderer::updateCirclePos()
285{
286 if (m_current_object != NoObject)
287 return;
288 QDateTime dt = QDateTime::currentDateTime();
289 qreal t = (dt.toTime_t() * 1000 + dt.time().msec()) / 1000.0;
290
291 qreal x = width() / qreal(2) + (qCos(t*8/11) + qSin(-t)) * width() / qreal(4);
292 qreal y = height() / qreal(2) + (qSin(t*6/7) + qCos(t * qreal(1.5))) * height() / qreal(4);
293
294 setCirclePos(QLineF(m_circle_pos, QPointF(x, y)).pointAt(0.02));
295}
296
297void CompositionRenderer::drawBase(QPainter &p)
298{
299 p.setPen(Qt::NoPen);
300
301 QLinearGradient rect_gradient(0, 0, 0, height());
302 rect_gradient.setColorAt(0, Qt::red);
303 rect_gradient.setColorAt(.17, Qt::yellow);
304 rect_gradient.setColorAt(.33, Qt::green);
305 rect_gradient.setColorAt(.50, Qt::cyan);
306 rect_gradient.setColorAt(.66, Qt::blue);
307 rect_gradient.setColorAt(.81, Qt::magenta);
308 rect_gradient.setColorAt(1, Qt::red);
309 p.setBrush(rect_gradient);
310 p.drawRect(width() / 2, 0, width() / 2, height());
311
312 QLinearGradient alpha_gradient(0, 0, width(), 0);
313 alpha_gradient.setColorAt(0, Qt::white);
314 alpha_gradient.setColorAt(0.2, Qt::white);
315 alpha_gradient.setColorAt(0.5, Qt::transparent);
316 alpha_gradient.setColorAt(0.8, Qt::white);
317 alpha_gradient.setColorAt(1, Qt::white);
318
319 p.setCompositionMode(QPainter::CompositionMode_DestinationIn);
320 p.setBrush(alpha_gradient);
321 p.drawRect(0, 0, width(), height());
322
323 p.setCompositionMode(QPainter::CompositionMode_DestinationOver);
324
325 p.setPen(Qt::NoPen);
326 p.setRenderHint(QPainter::SmoothPixmapTransform);
327#ifdef Q_WS_QWS
328 p.drawPixmap(rect(), m_image);
329#else
330 p.drawImage(rect(), m_image);
331#endif
332}
333
334void CompositionRenderer::drawSource(QPainter &p)
335{
336 p.setPen(Qt::NoPen);
337 p.setRenderHint(QPainter::Antialiasing);
338 p.setCompositionMode(m_composition_mode);
339
340 QRectF circle_rect = rectangle_around(m_circle_pos);
341 QColor color = QColor::fromHsvF(m_circle_hue / 360.0, 1, 1, m_circle_alpha / 255.0);
342 QLinearGradient circle_gradient(circle_rect.topLeft(), circle_rect.bottomRight());
343 circle_gradient.setColorAt(0, color.light());
344 circle_gradient.setColorAt(0.5, color);
345 circle_gradient.setColorAt(1, color.dark());
346 p.setBrush(circle_gradient);
347
348 p.drawEllipse(circle_rect);
349}
350
351void CompositionRenderer::paint(QPainter *painter)
352{
353#if defined(QT_OPENGL_SUPPORT) && !defined(QT_OPENGL_ES)
354 if (usesOpenGL()) {
355
356 int new_pbuf_size = m_pbuffer_size;
357 if (size().width() > m_pbuffer_size ||
358 size().height() > m_pbuffer_size)
359 new_pbuf_size *= 2;
360
361 if (size().width() < m_pbuffer_size/2 &&
362 size().height() < m_pbuffer_size/2)
363 new_pbuf_size /= 2;
364
365 if (!m_pbuffer || new_pbuf_size != m_pbuffer_size) {
366 if (m_pbuffer) {
367 m_pbuffer->deleteTexture(m_base_tex);
368 m_pbuffer->deleteTexture(m_compositing_tex);
369 delete m_pbuffer;
370 }
371
372 m_pbuffer = new QGLPixelBuffer(QSize(new_pbuf_size, new_pbuf_size), QGLFormat::defaultFormat(), glWidget());
373 m_pbuffer->makeCurrent();
374 m_base_tex = m_pbuffer->generateDynamicTexture();
375 m_compositing_tex = m_pbuffer->generateDynamicTexture();
376 m_pbuffer_size = new_pbuf_size;
377 }
378
379 if (size() != m_previous_size) {
380 m_previous_size = size();
381 QPainter p(m_pbuffer);
382 p.setCompositionMode(QPainter::CompositionMode_Source);
383 p.fillRect(QRect(0, 0, m_pbuffer->width(), m_pbuffer->height()), Qt::transparent);
384 drawBase(p);
385 p.end();
386 m_pbuffer->updateDynamicTexture(m_base_tex);
387 }
388
389 qreal x_fraction = width()/float(m_pbuffer->width());
390 qreal y_fraction = height()/float(m_pbuffer->height());
391
392 {
393 QPainter p(m_pbuffer);
394 p.setCompositionMode(QPainter::CompositionMode_Source);
395 p.fillRect(QRect(0, 0, m_pbuffer->width(), m_pbuffer->height()), Qt::transparent);
396
[561]397 p.save(); // Needed when using the GL1 engine
398 p.beginNativePainting(); // Needed when using the GL2 engine
399
[2]400 glBindTexture(GL_TEXTURE_2D, m_base_tex);
401 glEnable(GL_TEXTURE_2D);
402 glColor4f(1.,1.,1.,1.);
403
404 glBegin(GL_QUADS);
405 {
406 glTexCoord2f(0, 1.0);
407 glVertex2f(0, 0);
408
409 glTexCoord2f(x_fraction, 1.0);
410 glVertex2f(width(), 0);
411
412 glTexCoord2f(x_fraction, 1.0-y_fraction);
413 glVertex2f(width(), height());
414
415 glTexCoord2f(0, 1.0-y_fraction);
416 glVertex2f(0, height());
417 }
418 glEnd();
419
420 glDisable(GL_TEXTURE_2D);
421
[561]422 p.endNativePainting(); // Needed when using the GL2 engine
423 p.restore(); // Needed when using the GL1 engine
424
[2]425 drawSource(p);
426 p.end();
427 m_pbuffer->updateDynamicTexture(m_compositing_tex);
428 }
429
[561]430 painter->beginNativePainting(); // Needed when using the GL2 engine
431 glWidget()->makeCurrent(); // Needed when using the GL1 engine
[2]432 glBindTexture(GL_TEXTURE_2D, m_compositing_tex);
433 glEnable(GL_TEXTURE_2D);
[561]434 glEnable(GL_BLEND);
435 glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
[2]436 glColor4f(1.,1.,1.,1.);
437 glBegin(GL_QUADS);
438 {
439 glTexCoord2f(0, 1.0);
440 glVertex2f(0, 0);
441
442 glTexCoord2f(x_fraction, 1.0);
443 glVertex2f(width(), 0);
444
445 glTexCoord2f(x_fraction, 1.0-y_fraction);
446 glVertex2f(width(), height());
447
448 glTexCoord2f(0, 1.0-y_fraction);
449 glVertex2f(0, height());
450 }
451 glEnd();
452 glDisable(GL_TEXTURE_2D);
[561]453 painter->endNativePainting(); // Needed when using the GL2 engine
[2]454 } else
455#endif
456 {
457 // using a QImage
458 if (m_buffer.size() != size()) {
459#ifdef Q_WS_QWS
460 m_base_buffer = QPixmap(size());
461 m_base_buffer.fill(Qt::transparent);
462#else
463 m_buffer = QImage(size(), QImage::Format_ARGB32_Premultiplied);
464 m_base_buffer = QImage(size(), QImage::Format_ARGB32_Premultiplied);
465
466 m_base_buffer.fill(0);
467#endif
468
469 QPainter p(&m_base_buffer);
470
471 drawBase(p);
472 }
473
474#ifdef Q_WS_QWS
475 m_buffer = m_base_buffer;
476#else
[561]477 memcpy(m_buffer.bits(), m_base_buffer.bits(), m_buffer.byteCount());
[2]478#endif
479
480 {
481 QPainter p(&m_buffer);
482 drawSource(p);
483 }
484
485#ifdef Q_WS_QWS
486 painter->drawPixmap(0, 0, m_buffer);
487#else
488 painter->drawImage(0, 0, m_buffer);
489#endif
490 }
491}
492
493void CompositionRenderer::mousePressEvent(QMouseEvent *e)
494{
495 setDescriptionEnabled(false);
496
497 QRectF circle = rectangle_around(m_circle_pos);
498
499 if (circle.contains(e->pos())) {
500 m_current_object = Circle;
501 m_offset = circle.center() - e->pos();
502 } else {
503 m_current_object = NoObject;
504 }
[769]505 if (m_animation_enabled) {
506 killTimer(m_animationTimer);
507 m_animationTimer = 0;
508 }
[2]509}
510
511void CompositionRenderer::mouseMoveEvent(QMouseEvent *e)
512{
513 if (m_current_object == Circle) setCirclePos(e->pos() + m_offset);
514}
515
516void CompositionRenderer::mouseReleaseEvent(QMouseEvent *)
517{
518 m_current_object = NoObject;
519
[769]520 if (m_animation_enabled) {
521 Q_ASSERT(!m_animationTimer);
522 m_animationTimer = startTimer(animationInterval);
523 }
524}
525
526void CompositionRenderer::timerEvent(QTimerEvent *event)
527{
528 if (event->timerId() == m_animationTimer)
[2]529 updateCirclePos();
530}
531
532void CompositionRenderer::setCirclePos(const QPointF &pos)
533{
534 const QRect oldRect = rectangle_around(m_circle_pos).toAlignedRect();
535 m_circle_pos = pos;
536 const QRect newRect = rectangle_around(m_circle_pos).toAlignedRect();
537#if defined(QT_OPENGL_SUPPORT) && !defined(QT_OPENGL_ES)
538 if (usesOpenGL())
539 update();
540 else
541#endif
542 update(oldRect | newRect);
543}
544
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