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<h1 class="title">main.cpp Example File</h1>
<span class="small-subtitle">animation/appchooser/main.cpp</span>
<!-- $$$animation/appchooser/main.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp"> <span class="comment">/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** &quot;Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
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** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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****************************************************************************/</span>
<span class="preprocessor">#include &lt;QtCore&gt;</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<span class="keyword">class</span> Pixmap : <span class="keyword">public</span> <span class="type"><a href="qgraphicswidget.html">QGraphicsWidget</a></span>
{
Q_OBJECT
<span class="keyword">public</span>:
Pixmap(<span class="keyword">const</span> <span class="type"><a href="qpixmap.html">QPixmap</a></span> <span class="operator">&amp;</span>pix<span class="operator">,</span> <span class="type"><a href="qgraphicsitem.html">QGraphicsItem</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>)
: <span class="type"><a href="qgraphicswidget.html">QGraphicsWidget</a></span>(parent)<span class="operator">,</span> orig(pix)<span class="operator">,</span> p(pix)
{
}
<span class="type">void</span> paint(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">*</span>painter<span class="operator">,</span> <span class="keyword">const</span> <span class="type"><a href="qstyleoptiongraphicsitem.html">QStyleOptionGraphicsItem</a></span> <span class="operator">*</span><span class="operator">,</span> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>)
{
painter<span class="operator">-</span><span class="operator">&gt;</span>drawPixmap(<span class="type"><a href="qpointf.html">QPointF</a></span>()<span class="operator">,</span> p);
}
<span class="keyword">virtual</span> <span class="type">void</span> mousePressEvent(<span class="type"><a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a></span> <span class="operator">*</span> )
{
<span class="keyword">emit</span> clicked();
}
<span class="keyword">virtual</span> <span class="type">void</span> setGeometry(<span class="keyword">const</span> <span class="type"><a href="qrectf.html">QRectF</a></span> <span class="operator">&amp;</span>rect)
{
<span class="type"><a href="qgraphicswidget.html">QGraphicsWidget</a></span><span class="operator">::</span>setGeometry(rect);
<span class="keyword">if</span> (rect<span class="operator">.</span>size()<span class="operator">.</span>width() <span class="operator">&gt;</span> orig<span class="operator">.</span>size()<span class="operator">.</span>width())
p <span class="operator">=</span> orig<span class="operator">.</span>scaled(rect<span class="operator">.</span>size()<span class="operator">.</span>toSize());
<span class="keyword">else</span>
p <span class="operator">=</span> orig;
}
Q_SIGNALS:
<span class="type">void</span> clicked();
<span class="keyword">private</span>:
<span class="type"><a href="qpixmap.html">QPixmap</a></span> orig;
<span class="type"><a href="qpixmap.html">QPixmap</a></span> p;
};
<span class="keyword">class</span> GraphicsView : <span class="keyword">public</span> <span class="type"><a href="qgraphicsview.html">QGraphicsView</a></span>
{
Q_OBJECT
<span class="keyword">public</span>:
GraphicsView(<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span> <span class="operator">*</span>scene<span class="operator">,</span> <span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent <span class="operator">=</span> <span class="number">0</span>) : <span class="type"><a href="qgraphicsview.html">QGraphicsView</a></span>(scene<span class="operator">,</span> parent)
{
}
<span class="keyword">virtual</span> <span class="type">void</span> resizeEvent(<span class="type"><a href="qresizeevent.html">QResizeEvent</a></span> <span class="operator">*</span>event)
{
fitInView(sceneRect()<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>KeepAspectRatio);
}
};
<span class="type">void</span> createStates(<span class="keyword">const</span> <span class="type"><a href="qobject.html#QObjectList-typedef">QObjectList</a></span> <span class="operator">&amp;</span>objects<span class="operator">,</span>
<span class="keyword">const</span> <span class="type"><a href="qrect.html">QRect</a></span> <span class="operator">&amp;</span>selectedRect<span class="operator">,</span> <span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>parent)
{
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator">&lt;</span> objects<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i) {
<span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>state <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qstate.html">QState</a></span>(parent);
state<span class="operator">-</span><span class="operator">&gt;</span>assignProperty(objects<span class="operator">.</span>at(i)<span class="operator">,</span> <span class="string">&quot;geometry&quot;</span><span class="operator">,</span> selectedRect);
parent<span class="operator">-</span><span class="operator">&gt;</span>addTransition(objects<span class="operator">.</span>at(i)<span class="operator">,</span> SIGNAL(clicked())<span class="operator">,</span> state);
}
}
<span class="type">void</span> createAnimations(<span class="keyword">const</span> <span class="type"><a href="qobject.html#QObjectList-typedef">QObjectList</a></span> <span class="operator">&amp;</span>objects<span class="operator">,</span> <span class="type"><a href="qstatemachine.html">QStateMachine</a></span> <span class="operator">*</span>machine)
{
<span class="keyword">for</span> (<span class="type">int</span> i<span class="operator">=</span><span class="number">0</span>; i<span class="operator">&lt;</span>objects<span class="operator">.</span>size(); <span class="operator">+</span><span class="operator">+</span>i)
machine<span class="operator">-</span><span class="operator">&gt;</span>addDefaultAnimation(<span class="keyword">new</span> <span class="type"><a href="qpropertyanimation.html">QPropertyAnimation</a></span>(objects<span class="operator">.</span>at(i)<span class="operator">,</span> <span class="string">&quot;geometry&quot;</span>));
}
<span class="type">int</span> main(<span class="type">int</span> argc<span class="operator">,</span> <span class="type">char</span> <span class="operator">*</span><span class="operator">*</span>argv)
{
Q_INIT_RESOURCE(appchooser);
<span class="type"><a href="qapplication.html">QApplication</a></span> app(argc<span class="operator">,</span> argv);
Pixmap <span class="operator">*</span>p1 <span class="operator">=</span> <span class="keyword">new</span> Pixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/digikam.png&quot;</span>));
Pixmap <span class="operator">*</span>p2 <span class="operator">=</span> <span class="keyword">new</span> Pixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/akregator.png&quot;</span>));
Pixmap <span class="operator">*</span>p3 <span class="operator">=</span> <span class="keyword">new</span> Pixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/accessories-dictionary.png&quot;</span>));
Pixmap <span class="operator">*</span>p4 <span class="operator">=</span> <span class="keyword">new</span> Pixmap(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/k3b.png&quot;</span>));
p1<span class="operator">-</span><span class="operator">&gt;</span>setObjectName(<span class="string">&quot;p1&quot;</span>);
p2<span class="operator">-</span><span class="operator">&gt;</span>setObjectName(<span class="string">&quot;p2&quot;</span>);
p3<span class="operator">-</span><span class="operator">&gt;</span>setObjectName(<span class="string">&quot;p3&quot;</span>);
p4<span class="operator">-</span><span class="operator">&gt;</span>setObjectName(<span class="string">&quot;p4&quot;</span>);
p1<span class="operator">-</span><span class="operator">&gt;</span>setGeometry(<span class="type"><a href="qrectf.html">QRectF</a></span>( <span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="number">64.0</span><span class="operator">,</span> <span class="number">64.0</span>));
p2<span class="operator">-</span><span class="operator">&gt;</span>setGeometry(<span class="type"><a href="qrectf.html">QRectF</a></span>(<span class="number">236.0</span><span class="operator">,</span> <span class="number">0.0</span><span class="operator">,</span> <span class="number">64.0</span><span class="operator">,</span> <span class="number">64.0</span>));
p3<span class="operator">-</span><span class="operator">&gt;</span>setGeometry(<span class="type"><a href="qrectf.html">QRectF</a></span>(<span class="number">236.0</span><span class="operator">,</span> <span class="number">236.0</span><span class="operator">,</span> <span class="number">64.0</span><span class="operator">,</span> <span class="number">64.0</span>));
p4<span class="operator">-</span><span class="operator">&gt;</span>setGeometry(<span class="type"><a href="qrectf.html">QRectF</a></span>( <span class="number">0.0</span><span class="operator">,</span> <span class="number">236.0</span><span class="operator">,</span> <span class="number">64.0</span><span class="operator">,</span> <span class="number">64.0</span>));
<span class="type"><a href="qgraphicsscene.html">QGraphicsScene</a></span> scene(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">300</span><span class="operator">,</span> <span class="number">300</span>);
scene<span class="operator">.</span>setBackgroundBrush(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>white);
scene<span class="operator">.</span>addItem(p1);
scene<span class="operator">.</span>addItem(p2);
scene<span class="operator">.</span>addItem(p3);
scene<span class="operator">.</span>addItem(p4);
GraphicsView window(<span class="operator">&amp;</span>scene);
window<span class="operator">.</span>setFrameStyle(<span class="number">0</span>);
window<span class="operator">.</span>setAlignment(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignLeft <span class="operator">|</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignTop);
window<span class="operator">.</span>setHorizontalScrollBarPolicy(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAlwaysOff);
window<span class="operator">.</span>setVerticalScrollBarPolicy(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ScrollBarAlwaysOff);
<span class="type"><a href="qstatemachine.html">QStateMachine</a></span> machine;
machine<span class="operator">.</span>setGlobalRestorePolicy(<span class="type"><a href="qstatemachine.html">QStateMachine</a></span><span class="operator">::</span>RestoreProperties);
<span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>group <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qstate.html">QState</a></span>(<span class="operator">&amp;</span>machine);
group<span class="operator">-</span><span class="operator">&gt;</span>setObjectName(<span class="string">&quot;group&quot;</span>);
<span class="type"><a href="qrect.html">QRect</a></span> selectedRect(<span class="number">86</span><span class="operator">,</span> <span class="number">86</span><span class="operator">,</span> <span class="number">128</span><span class="operator">,</span> <span class="number">128</span>);
<span class="type"><a href="qstate.html">QState</a></span> <span class="operator">*</span>idleState <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qstate.html">QState</a></span>(group);
group<span class="operator">-</span><span class="operator">&gt;</span>setInitialState(idleState);
<span class="type"><a href="qobject.html#QObjectList-typedef">QObjectList</a></span> objects;
objects <span class="operator">&lt;</span><span class="operator">&lt;</span> p1 <span class="operator">&lt;</span><span class="operator">&lt;</span> p2 <span class="operator">&lt;</span><span class="operator">&lt;</span> p3 <span class="operator">&lt;</span><span class="operator">&lt;</span> p4;
createStates(objects<span class="operator">,</span> selectedRect<span class="operator">,</span> group);
createAnimations(objects<span class="operator">,</span> <span class="operator">&amp;</span>machine);
machine<span class="operator">.</span>setInitialState(group);
machine<span class="operator">.</span>start();
<span class="preprocessor">#if defined(Q_WS_S60) || defined(Q_WS_MAEMO_5)</span>
window<span class="operator">.</span>showMaximized();
<span class="preprocessor">#else</span>
window<span class="operator">.</span>resize(<span class="number">300</span><span class="operator">,</span> <span class="number">300</span>);
window<span class="operator">.</span>show();
<span class="preprocessor">#endif</span>
<span class="keyword">return</span> app<span class="operator">.</span>exec();
}
<span class="preprocessor">#include &quot;main.moc&quot;</span></pre>
</div>
<!-- @@@animation/appchooser/main.cpp -->
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