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<h1 class="title">window.cpp Example File</h1>
<span class="small-subtitle">painting/transformations/window.cpp</span>
<!-- $$$painting/transformations/window.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 examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** 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,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (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 "window.h"</span>
Window<span class="operator">::</span>Window()
{
originalRenderArea <span class="operator">=</span> <span class="keyword">new</span> RenderArea;
shapeComboBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Clock"</span>));
shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"House"</span>));
shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Text"</span>));
shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Truck"</span>));
<span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>layout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>;
layout<span class="operator">-</span><span class="operator">></span>addWidget(originalRenderArea<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span>);
layout<span class="operator">-</span><span class="operator">></span>addWidget(shapeComboBox<span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">0</span>);
<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> NumTransformedAreas; <span class="operator">+</span><span class="operator">+</span>i) {
transformedRenderAreas<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">=</span> <span class="keyword">new</span> RenderArea;
operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span> <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"No transformation"</span>));
operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Rotate by 60\xB0"</span>));
operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Scale to 75%"</span>));
operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Translate by (50, 50)"</span>));
connect(operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">,</span> SIGNAL(activated(<span class="type">int</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(operationChanged()));
layout<span class="operator">-</span><span class="operator">></span>addWidget(transformedRenderAreas<span class="operator">[</span>i<span class="operator">]</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> i <span class="operator">+</span> <span class="number">1</span>);
layout<span class="operator">-</span><span class="operator">></span>addWidget(operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> i <span class="operator">+</span> <span class="number">1</span>);
}
setLayout(layout);
setupShapes();
shapeSelected(<span class="number">0</span>);
setWindowTitle(tr(<span class="string">"Transformations"</span>));
}
<span class="type">void</span> Window<span class="operator">::</span>setupShapes()
{
<span class="type"><a href="qpainterpath.html">QPainterPath</a></span> truck;
truck<span class="operator">.</span>setFillRule(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>WindingFill);
truck<span class="operator">.</span>moveTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">87.0</span>);
truck<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">60.0</span>);
truck<span class="operator">.</span>lineTo(<span class="number">10.0</span><span class="operator">,</span> <span class="number">60.0</span>);
truck<span class="operator">.</span>lineTo(<span class="number">35.0</span><span class="operator">,</span> <span class="number">35.0</span>);
truck<span class="operator">.</span>lineTo(<span class="number">100.0</span><span class="operator">,</span> <span class="number">35.0</span>);
truck<span class="operator">.</span>lineTo(<span class="number">100.0</span><span class="operator">,</span> <span class="number">87.0</span>);
truck<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">87.0</span>);
truck<span class="operator">.</span>moveTo(<span class="number">17.0</span><span class="operator">,</span> <span class="number">60.0</span>);
truck<span class="operator">.</span>lineTo(<span class="number">55.0</span><span class="operator">,</span> <span class="number">60.0</span>);
truck<span class="operator">.</span>lineTo(<span class="number">55.0</span><span class="operator">,</span> <span class="number">40.0</span>);
truck<span class="operator">.</span>lineTo(<span class="number">37.0</span><span class="operator">,</span> <span class="number">40.0</span>);
truck<span class="operator">.</span>lineTo(<span class="number">17.0</span><span class="operator">,</span> <span class="number">60.0</span>);
truck<span class="operator">.</span>addEllipse(<span class="number">17.0</span><span class="operator">,</span> <span class="number">75.0</span><span class="operator">,</span> <span class="number">25.0</span><span class="operator">,</span> <span class="number">25.0</span>);
truck<span class="operator">.</span>addEllipse(<span class="number">63.0</span><span class="operator">,</span> <span class="number">75.0</span><span class="operator">,</span> <span class="number">25.0</span><span class="operator">,</span> <span class="number">25.0</span>);
<span class="type"><a href="qpainterpath.html">QPainterPath</a></span> clock;
clock<span class="operator">.</span>addEllipse(<span class="operator">-</span><span class="number">50.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">50.0</span><span class="operator">,</span> <span class="number">100.0</span><span class="operator">,</span> <span class="number">100.0</span>);
clock<span class="operator">.</span>addEllipse(<span class="operator">-</span><span class="number">48.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">48.0</span><span class="operator">,</span> <span class="number">96.0</span><span class="operator">,</span> <span class="number">96.0</span>);
clock<span class="operator">.</span>moveTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span>);
clock<span class="operator">.</span>lineTo(<span class="operator">-</span><span class="number">2.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">2.0</span>);
clock<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">42.0</span>);
clock<span class="operator">.</span>lineTo(<span class="number">2.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">2.0</span>);
clock<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span>);
clock<span class="operator">.</span>moveTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span>);
clock<span class="operator">.</span>lineTo(<span class="number">2.732</span><span class="operator">,</span> <span class="operator">-</span><span class="number">0.732</span>);
clock<span class="operator">.</span>lineTo(<span class="number">24.495</span><span class="operator">,</span> <span class="number">14.142</span>);
clock<span class="operator">.</span>lineTo(<span class="number">0.732</span><span class="operator">,</span> <span class="number">2.732</span>);
clock<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="number">0.0</span>);
<span class="type"><a href="qpainterpath.html">QPainterPath</a></span> house;
house<span class="operator">.</span>moveTo(<span class="operator">-</span><span class="number">45.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">20.0</span>);
house<span class="operator">.</span>lineTo(<span class="number">0.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">45.0</span>);
house<span class="operator">.</span>lineTo(<span class="number">45.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">20.0</span>);
house<span class="operator">.</span>lineTo(<span class="number">45.0</span><span class="operator">,</span> <span class="number">45.0</span>);
house<span class="operator">.</span>lineTo(<span class="operator">-</span><span class="number">45.0</span><span class="operator">,</span> <span class="number">45.0</span>);
house<span class="operator">.</span>lineTo(<span class="operator">-</span><span class="number">45.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">20.0</span>);
house<span class="operator">.</span>addRect(<span class="number">15.0</span><span class="operator">,</span> <span class="number">5.0</span><span class="operator">,</span> <span class="number">20.0</span><span class="operator">,</span> <span class="number">35.0</span>);
house<span class="operator">.</span>addRect(<span class="operator">-</span><span class="number">35.0</span><span class="operator">,</span> <span class="operator">-</span><span class="number">15.0</span><span class="operator">,</span> <span class="number">25.0</span><span class="operator">,</span> <span class="number">25.0</span>);
<span class="type"><a href="qpainterpath.html">QPainterPath</a></span> text;
<span class="type"><a href="qfont.html">QFont</a></span> font;
font<span class="operator">.</span>setPixelSize(<span class="number">50</span>);
<span class="type"><a href="qrect.html">QRect</a></span> fontBoundingRect <span class="operator">=</span> <span class="type"><a href="qfontmetrics.html">QFontMetrics</a></span>(font)<span class="operator">.</span>boundingRect(tr(<span class="string">"Qt"</span>));
text<span class="operator">.</span>addText(<span class="operator">-</span><span class="type"><a href="qpointf.html">QPointF</a></span>(fontBoundingRect<span class="operator">.</span>center())<span class="operator">,</span> font<span class="operator">,</span> tr(<span class="string">"Qt"</span>));
shapes<span class="operator">.</span>append(clock);
shapes<span class="operator">.</span>append(house);
shapes<span class="operator">.</span>append(text);
shapes<span class="operator">.</span>append(truck);
connect(shapeComboBox<span class="operator">,</span> SIGNAL(activated(<span class="type">int</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(shapeSelected(<span class="type">int</span>)));
}
<span class="type">void</span> Window<span class="operator">::</span>operationChanged()
{
<span class="keyword">static</span> <span class="keyword">const</span> Operation operationTable<span class="operator">[</span><span class="operator">]</span> <span class="operator">=</span> {
NoTransformation<span class="operator">,</span> Rotate<span class="operator">,</span> Scale<span class="operator">,</span> Translate
};
<span class="type"><a href="qlist.html">QList</a></span><span class="operator"><</span>Operation<span class="operator">></span> operations;
<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> NumTransformedAreas; <span class="operator">+</span><span class="operator">+</span>i) {
<span class="type">int</span> index <span class="operator">=</span> operationComboBoxes<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>currentIndex();
operations<span class="operator">.</span>append(operationTable<span class="operator">[</span>index<span class="operator">]</span>);
transformedRenderAreas<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>setOperations(operations);
}
}
<span class="type">void</span> Window<span class="operator">::</span>shapeSelected(<span class="type">int</span> index)
{
<span class="type"><a href="qpainterpath.html">QPainterPath</a></span> shape <span class="operator">=</span> shapes<span class="operator">[</span>index<span class="operator">]</span>;
originalRenderArea<span class="operator">-</span><span class="operator">></span>setShape(shape);
<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> NumTransformedAreas; <span class="operator">+</span><span class="operator">+</span>i)
transformedRenderAreas<span class="operator">[</span>i<span class="operator">]</span><span class="operator">-</span><span class="operator">></span>setShape(shape);
}</pre>
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<!-- @@@painting/transformations/window.cpp -->
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