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<h1 class="title">analogclock.cpp Example File</h1>
<span class="subtitle">widgets/analogclock/analogclock.cpp</span>
<!-- $$$widgets/analogclock/analogclock.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.
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<span class="preprocessor">#include <QtWidgets></span>
<span class="preprocessor">#include "analogclock.h"</span>
AnalogClock<span class="operator">::</span>AnalogClock(<span class="type"><a href="qwidget.html">QWidget</a></span> <span class="operator">*</span>parent)
: <span class="type"><a href="qwidget.html">QWidget</a></span>(parent)
{
<span class="type"><a href="../qtcore/qtimer.html">QTimer</a></span> <span class="operator">*</span>timer <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="../qtcore/qtimer.html">QTimer</a></span>(<span class="keyword">this</span>);
connect(timer<span class="operator">,</span> SIGNAL(timeout())<span class="operator">,</span> <span class="keyword">this</span><span class="operator">,</span> SLOT(update()));
timer<span class="operator">-</span><span class="operator">></span>start(<span class="number">1000</span>);
setWindowTitle(tr(<span class="string">"Analog Clock"</span>));
resize(<span class="number">200</span><span class="operator">,</span> <span class="number">200</span>);
}
<span class="type">void</span> AnalogClock<span class="operator">::</span>paintEvent(<span class="type"><a href="../qtgui/qpaintevent.html">QPaintEvent</a></span> <span class="operator">*</span>)
{
<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="../qtgui/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="../qtgui/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>);
<span class="type">int</span> side <span class="operator">=</span> <a href="../qtcore/qtglobal.html#qMin">qMin</a>(width()<span class="operator">,</span> height());
<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();
<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span> painter(<span class="keyword">this</span>);
painter<span class="operator">.</span>setRenderHint(<span class="type"><a href="../qtgui/qpainter.html">QPainter</a></span><span class="operator">::</span>Antialiasing);
painter<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>);
painter<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>);
painter<span class="operator">.</span>setPen(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoPen);
painter<span class="operator">.</span>setBrush(hourColor);
painter<span class="operator">.</span>save();
painter<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>)));
painter<span class="operator">.</span>drawConvexPolygon(hourHand<span class="operator">,</span> <span class="number">3</span>);
painter<span class="operator">.</span>restore();
painter<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) {
painter<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>);
painter<span class="operator">.</span>rotate(<span class="number">30.0</span>);
}
painter<span class="operator">.</span>setPen(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>NoPen);
painter<span class="operator">.</span>setBrush(minuteColor);
painter<span class="operator">.</span>save();
painter<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>));
painter<span class="operator">.</span>drawConvexPolygon(minuteHand<span class="operator">,</span> <span class="number">3</span>);
painter<span class="operator">.</span>restore();
painter<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>)
painter<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>);
painter<span class="operator">.</span>rotate(<span class="number">6.0</span>);
}
}
</pre>
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<!-- @@@widgets/analogclock/analogclock.cpp -->
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