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<td >Qt 5.9</td><td ><a href="qtgui-index.html">Qt GUI</a></td><td ><a href="qtgui-analogclock-example.html">Analog Clock Window Example</a></td><td >main.cpp Example File</td></tr></table><table class="buildversion"><tr>
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<h1 class="title">main.cpp Example File</h1>
<span class="subtitle">analogclock/main.cpp</span>
<!-- $$$analogclock/main.cpp-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">
<span class="comment">/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** BSD License Usage
** Alternatively, you may use this file under the terms of the BSD license
** as follows:
**
** "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
** notice, this list of conditions and the following disclaimer.
** * 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
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include <QtGui></span>
<span class="preprocessor">#include "rasterwindow.h"</span>
<span class="keyword">class</span> AnalogClockWindow : <span class="keyword">public</span> RasterWindow
{
<span class="keyword">public</span>:
AnalogClockWindow();
<span class="keyword">protected</span>:
<span class="type">void</span> timerEvent(<span class="type"><a href="../qtcore/qtimerevent.html">QTimerEvent</a></span> <span class="operator">*</span>) override;
<span class="type">void</span> render(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">*</span>p) override;
<span class="keyword">private</span>:
<span class="type">int</span> m_timerId;
};
AnalogClockWindow<span class="operator">::</span>AnalogClockWindow()
{
setTitle(<span class="string">"Analog Clock"</span>);
resize(<span class="number">200</span><span class="operator">,</span> <span class="number">200</span>);
m_timerId <span class="operator">=</span> startTimer(<span class="number">1000</span>);
}
<span class="type">void</span> AnalogClockWindow<span class="operator">::</span>timerEvent(<span class="type"><a href="../qtcore/qtimerevent.html">QTimerEvent</a></span> <span class="operator">*</span>event)
{
<span class="keyword">if</span> (event<span class="operator">-</span><span class="operator">></span>timerId() <span class="operator">=</span><span class="operator">=</span> m_timerId)
renderLater();
}
<span class="type">void</span> AnalogClockWindow<span class="operator">::</span>render(<span class="type"><a href="qpainter.html">QPainter</a></span> <span class="operator">*</span>p)
{
<span class="keyword">static</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span> hourHand<span class="operator">[</span><span class="number">3</span><span class="operator">]</span> <span class="operator">=</span> {
<span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span>(<span class="number">7</span><span class="operator">,</span> <span class="number">8</span>)<span class="operator">,</span>
<span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span>(<span class="operator">-</span><span class="number">7</span><span class="operator">,</span> <span class="number">8</span>)<span class="operator">,</span>
<span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">40</span>)
};
<span class="keyword">static</span> <span class="keyword">const</span> <span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span> minuteHand<span class="operator">[</span><span class="number">3</span><span class="operator">]</span> <span class="operator">=</span> {
<span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span>(<span class="number">7</span><span class="operator">,</span> <span class="number">8</span>)<span class="operator">,</span>
<span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span>(<span class="operator">-</span><span class="number">7</span><span class="operator">,</span> <span class="number">8</span>)<span class="operator">,</span>
<span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span>(<span class="number">0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">70</span>)
};
<span class="type"><a href="qcolor.html">QColor</a></span> hourColor(<span class="number">127</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">127</span>);
<span class="type"><a href="qcolor.html">QColor</a></span> minuteColor(<span class="number">0</span><span class="operator">,</span> <span class="number">127</span><span class="operator">,</span> <span class="number">127</span><span class="operator">,</span> <span class="number">191</span>);
p<span class="operator">-</span><span class="operator">></span>setRenderHint(<span class="type"><a href="qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing);
p<span class="operator">-</span><span class="operator">></span>translate(width() <span class="operator">/</span> <span class="number">2</span><span class="operator">,</span> height() <span class="operator">/</span> <span class="number">2</span>);
<span class="type">int</span> side <span class="operator">=</span> <a href="../qtcore/qtglobal.html#qMin">qMin</a>(width()<span class="operator">,</span> height());
p<span class="operator">-</span><span class="operator">></span>scale(side <span class="operator">/</span> <span class="number">200.0</span><span class="operator">,</span> side <span class="operator">/</span> <span class="number">200.0</span>);
p<span class="operator">-</span><span class="operator">></span>setPen(<span class="type">Qt</span><span class="operator">::</span>NoPen);
p<span class="operator">-</span><span class="operator">></span>setBrush(hourColor);
<span class="type"><a href="../qtcore/qtime.html">QTime</a></span> time <span class="operator">=</span> <span class="type"><a href="../qtcore/qtime.html">QTime</a></span><span class="operator">::</span>currentTime();
p<span class="operator">-</span><span class="operator">></span>save();
p<span class="operator">-</span><span class="operator">></span>rotate(<span class="number">30.0</span> <span class="operator">*</span> ((time<span class="operator">.</span>hour() <span class="operator">+</span> time<span class="operator">.</span>minute() <span class="operator">/</span> <span class="number">60.0</span>)));
p<span class="operator">-</span><span class="operator">></span>drawConvexPolygon(hourHand<span class="operator">,</span> <span class="number">3</span>);
p<span class="operator">-</span><span class="operator">></span>restore();
p<span class="operator">-</span><span class="operator">></span>setPen(hourColor);
<span class="keyword">for</span> (<span class="type">int</span> i <span class="operator">=</span> <span class="number">0</span>; i <span class="operator"><</span> <span class="number">12</span>; <span class="operator">+</span><span class="operator">+</span>i) {
p<span class="operator">-</span><span class="operator">></span>drawLine(<span class="number">88</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">96</span><span class="operator">,</span> <span class="number">0</span>);
p<span class="operator">-</span><span class="operator">></span>rotate(<span class="number">30.0</span>);
}
p<span class="operator">-</span><span class="operator">></span>setPen(<span class="type">Qt</span><span class="operator">::</span>NoPen);
p<span class="operator">-</span><span class="operator">></span>setBrush(minuteColor);
p<span class="operator">-</span><span class="operator">></span>save();
p<span class="operator">-</span><span class="operator">></span>rotate(<span class="number">6.0</span> <span class="operator">*</span> (time<span class="operator">.</span>minute() <span class="operator">+</span> time<span class="operator">.</span>second() <span class="operator">/</span> <span class="number">60.0</span>));
p<span class="operator">-</span><span class="operator">></span>drawConvexPolygon(minuteHand<span class="operator">,</span> <span class="number">3</span>);
p<span class="operator">-</span><span class="operator">></span>restore();
p<span class="operator">-</span><span class="operator">></span>setPen(minuteColor);
<span class="keyword">for</span> (<span class="type">int</span> j <span class="operator">=</span> <span class="number">0</span>; j <span class="operator"><</span> <span class="number">60</span>; <span class="operator">+</span><span class="operator">+</span>j) {
<span class="keyword">if</span> ((j <span class="operator">%</span> <span class="number">5</span>) <span class="operator">!</span><span class="operator">=</span> <span class="number">0</span>)
p<span class="operator">-</span><span class="operator">></span>drawLine(<span class="number">92</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">96</span><span class="operator">,</span> <span class="number">0</span>);
p<span class="operator">-</span><span class="operator">></span>rotate(<span class="number">6.0</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)
{
<span class="type"><a href="qguiapplication.html">QGuiApplication</a></span> app(argc<span class="operator">,</span> argv);
AnalogClockWindow clock;
clock<span class="operator">.</span>show();
<span class="keyword">return</span> app<span class="operator">.</span>exec();
}
</pre>
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<!-- @@@analogclock/main.cpp -->
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