source: trunk/examples/animation/moveblocks/main.cpp@ 953

Last change on this file since 953 was 846, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.
  • Property svn:eol-style set to native
File size: 10.2 KB
Line 
1/****************************************************************************
2**
3** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation (qt-info@nokia.com)
6**
7** This file is part of the QtCore module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:BSD$
10** You may use this file under the terms of the BSD license as follows:
11**
12** "Redistribution and use in source and binary forms, with or without
13** modification, are permitted provided that the following conditions are
14** met:
15** * Redistributions of source code must retain the above copyright
16** notice, this list of conditions and the following disclaimer.
17** * Redistributions in binary form must reproduce the above copyright
18** notice, this list of conditions and the following disclaimer in
19** the documentation and/or other materials provided with the
20** distribution.
21** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
22** the names of its contributors may be used to endorse or promote
23** products derived from this software without specific prior written
24** permission.
25**
26** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
27** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
28** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
29** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
30** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
31** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
32** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
33** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
34** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
35** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
36** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
37** $QT_END_LICENSE$
38**
39****************************************************************************/
40
41#include <QtCore>
42#include <QtGui>
43
44//![15]
45class StateSwitchEvent: public QEvent
46{
47public:
48 StateSwitchEvent()
49 : QEvent(Type(StateSwitchType))
50 {
51 }
52
53 StateSwitchEvent(int rand)
54 : QEvent(Type(StateSwitchType)),
55 m_rand(rand)
56 {
57 }
58
59 enum { StateSwitchType = QEvent::User + 256 };
60
61 int rand() const { return m_rand; }
62
63private:
64 int m_rand;
65};
66//![15]
67
68//![16]
69class QGraphicsRectWidget : public QGraphicsWidget
70{
71public:
72 void paint(QPainter *painter, const QStyleOptionGraphicsItem *,
73 QWidget *)
74 {
75 painter->fillRect(rect(), Qt::blue);
76 }
77};
78//![16]
79
80class StateSwitchTransition: public QAbstractTransition
81{
82public:
83 StateSwitchTransition(int rand)
84 : QAbstractTransition(),
85 m_rand(rand)
86 {
87 }
88
89protected:
90//![14]
91 virtual bool eventTest(QEvent *event)
92 {
93 return (event->type() == QEvent::Type(StateSwitchEvent::StateSwitchType))
94 && (static_cast<StateSwitchEvent *>(event)->rand() == m_rand);
95 }
96//![14]
97
98 virtual void onTransition(QEvent *) {}
99
100private:
101 int m_rand;
102};
103
104//![10]
105class StateSwitcher : public QState
106{
107 Q_OBJECT
108public:
109 StateSwitcher(QStateMachine *machine)
110 : QState(machine), m_stateCount(0), m_lastIndex(0)
111 { }
112//![10]
113
114//![11]
115 virtual void onEntry(QEvent *)
116 {
117 int n;
118 while ((n = (qrand() % m_stateCount + 1)) == m_lastIndex)
119 { }
120 m_lastIndex = n;
121 machine()->postEvent(new StateSwitchEvent(n));
122 }
123 virtual void onExit(QEvent *) {}
124//![11]
125
126//![12]
127 void addState(QState *state, QAbstractAnimation *animation) {
128 StateSwitchTransition *trans = new StateSwitchTransition(++m_stateCount);
129 trans->setTargetState(state);
130 addTransition(trans);
131 trans->addAnimation(animation);
132 }
133//![12]
134
135private:
136 int m_stateCount;
137 int m_lastIndex;
138};
139
140//![13]
141QState *createGeometryState(QObject *w1, const QRect &rect1,
142 QObject *w2, const QRect &rect2,
143 QObject *w3, const QRect &rect3,
144 QObject *w4, const QRect &rect4,
145 QState *parent)
146{
147 QState *result = new QState(parent);
148 result->assignProperty(w1, "geometry", rect1);
149 result->assignProperty(w2, "geometry", rect2);
150 result->assignProperty(w3, "geometry", rect3);
151 result->assignProperty(w4, "geometry", rect4);
152
153 return result;
154}
155//![13]
156
157int main(int argc, char **argv)
158{
159 QApplication app(argc, argv);
160
161#if 0
162 QWidget window;
163 QPalette palette;
164 palette.setBrush(QPalette::Window, Qt::black);
165 window.setPalette(palette);
166 QPushButton *button1 = new QPushButton("A", &window);
167 QPushButton *button2 = new QPushButton("B", &window);
168 QPushButton *button3 = new QPushButton("C", &window);
169 QPushButton *button4 = new QPushButton("D", &window);
170
171 button1->setObjectName("button1");
172 button2->setObjectName("button2");
173 button3->setObjectName("button3");
174 button4->setObjectName("button4");
175#else
176//![1]
177 QGraphicsRectWidget *button1 = new QGraphicsRectWidget;
178 QGraphicsRectWidget *button2 = new QGraphicsRectWidget;
179 QGraphicsRectWidget *button3 = new QGraphicsRectWidget;
180 QGraphicsRectWidget *button4 = new QGraphicsRectWidget;
181 button2->setZValue(1);
182 button3->setZValue(2);
183 button4->setZValue(3);
184 QGraphicsScene scene(0, 0, 300, 300);
185 scene.setBackgroundBrush(Qt::black);
186 scene.addItem(button1);
187 scene.addItem(button2);
188 scene.addItem(button3);
189 scene.addItem(button4);
190//![1]
191 QGraphicsView window(&scene);
192 window.setFrameStyle(0);
193 window.setAlignment(Qt::AlignLeft | Qt::AlignTop);
194 window.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
195 window.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
196#endif
197//![2]
198 QStateMachine machine;
199
200 QState *group = new QState();
201 group->setObjectName("group");
202 QTimer timer;
203 timer.setInterval(1250);
204 timer.setSingleShot(true);
205 QObject::connect(group, SIGNAL(entered()), &timer, SLOT(start()));
206//![2]
207
208//![3]
209 QState *state1;
210 QState *state2;
211 QState *state3;
212 QState *state4;
213 QState *state5;
214 QState *state6;
215 QState *state7;
216
217 state1 = createGeometryState(button1, QRect(100, 0, 50, 50),
218 button2, QRect(150, 0, 50, 50),
219 button3, QRect(200, 0, 50, 50),
220 button4, QRect(250, 0, 50, 50),
221 group);
222//![3]
223 state2 = createGeometryState(button1, QRect(250, 100, 50, 50),
224 button2, QRect(250, 150, 50, 50),
225 button3, QRect(250, 200, 50, 50),
226 button4, QRect(250, 250, 50, 50),
227 group);
228 state3 = createGeometryState(button1, QRect(150, 250, 50, 50),
229 button2, QRect(100, 250, 50, 50),
230 button3, QRect(50, 250, 50, 50),
231 button4, QRect(0, 250, 50, 50),
232 group);
233 state4 = createGeometryState(button1, QRect(0, 150, 50, 50),
234 button2, QRect(0, 100, 50, 50),
235 button3, QRect(0, 50, 50, 50),
236 button4, QRect(0, 0, 50, 50),
237 group);
238 state5 = createGeometryState(button1, QRect(100, 100, 50, 50),
239 button2, QRect(150, 100, 50, 50),
240 button3, QRect(100, 150, 50, 50),
241 button4, QRect(150, 150, 50, 50),
242 group);
243 state6 = createGeometryState(button1, QRect(50, 50, 50, 50),
244 button2, QRect(200, 50, 50, 50),
245 button3, QRect(50, 200, 50, 50),
246 button4, QRect(200, 200, 50, 50),
247 group);
248//![4]
249 state7 = createGeometryState(button1, QRect(0, 0, 50, 50),
250 button2, QRect(250, 0, 50, 50),
251 button3, QRect(0, 250, 50, 50),
252 button4, QRect(250, 250, 50, 50),
253 group);
254 group->setInitialState(state1);
255//![4]
256
257//![5]
258 QParallelAnimationGroup animationGroup;
259 QSequentialAnimationGroup *subGroup;
260
261 QPropertyAnimation *anim = new QPropertyAnimation(button4, "geometry");
262 anim->setDuration(1000);
263 anim->setEasingCurve(QEasingCurve::OutElastic);
264 animationGroup.addAnimation(anim);
265//![5]
266
267//![6]
268 subGroup = new QSequentialAnimationGroup(&animationGroup);
269 subGroup->addPause(100);
270 anim = new QPropertyAnimation(button3, "geometry");
271 anim->setDuration(1000);
272 anim->setEasingCurve(QEasingCurve::OutElastic);
273 subGroup->addAnimation(anim);
274//![6]
275
276 subGroup = new QSequentialAnimationGroup(&animationGroup);
277 subGroup->addPause(150);
278 anim = new QPropertyAnimation(button2, "geometry");
279 anim->setDuration(1000);
280 anim->setEasingCurve(QEasingCurve::OutElastic);
281 subGroup->addAnimation(anim);
282
283 subGroup = new QSequentialAnimationGroup(&animationGroup);
284 subGroup->addPause(200);
285 anim = new QPropertyAnimation(button1, "geometry");
286 anim->setDuration(1000);
287 anim->setEasingCurve(QEasingCurve::OutElastic);
288 subGroup->addAnimation(anim);
289
290//![7]
291 StateSwitcher *stateSwitcher = new StateSwitcher(&machine);
292 stateSwitcher->setObjectName("stateSwitcher");
293 group->addTransition(&timer, SIGNAL(timeout()), stateSwitcher);
294 stateSwitcher->addState(state1, &animationGroup);
295 stateSwitcher->addState(state2, &animationGroup);
296//![7]
297 stateSwitcher->addState(state3, &animationGroup);
298 stateSwitcher->addState(state4, &animationGroup);
299 stateSwitcher->addState(state5, &animationGroup);
300 stateSwitcher->addState(state6, &animationGroup);
301//![8]
302 stateSwitcher->addState(state7, &animationGroup);
303//![8]
304
305//![9]
306 machine.addState(group);
307 machine.setInitialState(group);
308 machine.start();
309//![9]
310
311 window.resize(300, 300);
312 window.show();
313
314 qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
315
316 return app.exec();
317}
318
319#include "main.moc"
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