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qt4-x11/doc/html/painting-basicdrawing-window-cpp.html
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<h1 class="title">window.cpp Example File</h1>
<span class="small-subtitle">painting/basicdrawing/window.cpp</span>
<!-- $$$painting/basicdrawing/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:
**
** &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
** 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
** &quot;AS IS&quot; 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.&quot;
**
** $QT_END_LICENSE$
**
****************************************************************************/</span>
<span class="preprocessor">#include &lt;QtGui&gt;</span>
<span class="preprocessor">#include &quot;renderarea.h&quot;</span>
<span class="preprocessor">#include &quot;window.h&quot;</span>
<span class="keyword">const</span> <span class="type">int</span> IdRole <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>UserRole;
Window<span class="operator">::</span>Window()
{
renderArea <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">&gt;</span>addItem(tr(<span class="string">&quot;Polygon&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Polygon);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Rectangle&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Rect);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Rounded Rectangle&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>RoundedRect);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Ellipse&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Ellipse);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Pie&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Pie);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Chord&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Chord);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Path&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Path);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Line&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Line);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Polyline&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Polyline);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Arc&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Arc);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Points&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Points);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Text&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Text);
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Pixmap&quot;</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Pixmap);
shapeLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;&amp;Shape:&quot;</span>));
shapeLabel<span class="operator">-</span><span class="operator">&gt;</span>setBuddy(shapeComboBox);
penWidthSpinBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qspinbox.html">QSpinBox</a></span>;
penWidthSpinBox<span class="operator">-</span><span class="operator">&gt;</span>setRange(<span class="number">0</span><span class="operator">,</span> <span class="number">20</span>);
<span class="preprocessor">#if defined(Q_OS_SYMBIAN) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)</span>
penWidthSpinBox<span class="operator">-</span><span class="operator">&gt;</span>setSpecialValueText(tr(<span class="string">&quot;0&quot;</span>));
<span class="preprocessor">#else</span>
penWidthSpinBox<span class="operator">-</span><span class="operator">&gt;</span>setSpecialValueText(tr(<span class="string">&quot;0 (cosmetic pen)&quot;</span>));
<span class="preprocessor">#endif</span>
penWidthLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Pen &amp;Width:&quot;</span>));
penWidthLabel<span class="operator">-</span><span class="operator">&gt;</span>setBuddy(penWidthSpinBox);
penStyleComboBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
penStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Solid&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>SolidLine);
penStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dash&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DashLine);
penStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dot&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DotLine);
penStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dash Dot&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DashDotLine);
penStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dash Dot Dot&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DashDotDotLine);
penStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;None&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>NoPen);
penStyleLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;&amp;Pen Style:&quot;</span>));
penStyleLabel<span class="operator">-</span><span class="operator">&gt;</span>setBuddy(penStyleComboBox);
penCapComboBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
penCapComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Flat&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>FlatCap);
penCapComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Square&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>SquareCap);
penCapComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Round&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RoundCap);
penCapLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Pen &amp;Cap:&quot;</span>));
penCapLabel<span class="operator">-</span><span class="operator">&gt;</span>setBuddy(penCapComboBox);
penJoinComboBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
penJoinComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Miter&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>MiterJoin);
penJoinComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Bevel&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BevelJoin);
penJoinComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Round&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RoundJoin);
penJoinLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Pen &amp;Join:&quot;</span>));
penJoinLabel<span class="operator">-</span><span class="operator">&gt;</span>setBuddy(penJoinComboBox);
brushStyleComboBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcombobox.html">QComboBox</a></span>;
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Linear Gradient&quot;</span>)<span class="operator">,</span>
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LinearGradientPattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Radial Gradient&quot;</span>)<span class="operator">,</span>
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RadialGradientPattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Conical Gradient&quot;</span>)<span class="operator">,</span>
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ConicalGradientPattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Texture&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TexturePattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Solid&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>SolidPattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Horizontal&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>HorPattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Vertical&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>VerPattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Cross&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>CrossPattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Backward Diagonal&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BDiagPattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Forward Diagonal&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>FDiagPattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Diagonal Cross&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>DiagCrossPattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dense 1&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Dense1Pattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dense 2&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Dense2Pattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dense 3&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Dense3Pattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dense 4&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Dense4Pattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dense 5&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Dense5Pattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dense 6&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Dense6Pattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;Dense 7&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>Dense7Pattern);
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>addItem(tr(<span class="string">&quot;None&quot;</span>)<span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>NoBrush);
brushStyleLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;&amp;Brush:&quot;</span>));
brushStyleLabel<span class="operator">-</span><span class="operator">&gt;</span>setBuddy(brushStyleComboBox);
otherOptionsLabel <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qlabel.html">QLabel</a></span>(tr(<span class="string">&quot;Options:&quot;</span>));
antialiasingCheckBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcheckbox.html">QCheckBox</a></span>(tr(<span class="string">&quot;&amp;Antialiasing&quot;</span>));
transformationsCheckBox <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qcheckbox.html">QCheckBox</a></span>(tr(<span class="string">&quot;&amp;Transformations&quot;</span>));
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(shapeChanged()));
connect(penWidthSpinBox<span class="operator">,</span> SIGNAL(valueChanged(<span class="type">int</span>))<span class="operator">,</span>
<span class="keyword">this</span><span class="operator">,</span> SLOT(penChanged()));
connect(penStyleComboBox<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(penChanged()));
connect(penCapComboBox<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(penChanged()));
connect(penJoinComboBox<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(penChanged()));
connect(brushStyleComboBox<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(brushChanged()));
connect(antialiasingCheckBox<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span>
renderArea<span class="operator">,</span> SLOT(setAntialiased(<span class="type">bool</span>)));
connect(transformationsCheckBox<span class="operator">,</span> SIGNAL(toggled(<span class="type">bool</span>))<span class="operator">,</span>
renderArea<span class="operator">,</span> SLOT(setTransformed(<span class="type">bool</span>)));
<span class="type"><a href="qgridlayout.html">QGridLayout</a></span> <span class="operator">*</span>mainLayout <span class="operator">=</span> <span class="keyword">new</span> <span class="type"><a href="qgridlayout.html">QGridLayout</a></span>;
<span class="preprocessor">#if defined(Q_OS_SYMBIAN) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)</span>
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>setSizeConstraint(<span class="type"><a href="qlayout.html">QLayout</a></span><span class="operator">::</span>SetNoConstraint);
<span class="preprocessor">#endif</span>
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>setColumnStretch(<span class="number">0</span><span class="operator">,</span> <span class="number">1</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>setColumnStretch(<span class="number">3</span><span class="operator">,</span> <span class="number">1</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(renderArea<span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">4</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(shapeLabel<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignRight);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(shapeComboBox<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(penWidthLabel<span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignRight);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(penWidthSpinBox<span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="number">1</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(penStyleLabel<span class="operator">,</span> <span class="number">4</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignRight);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(penStyleComboBox<span class="operator">,</span> <span class="number">4</span><span class="operator">,</span> <span class="number">1</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(penCapLabel<span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignRight);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(penCapComboBox<span class="operator">,</span> <span class="number">3</span><span class="operator">,</span> <span class="number">3</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(penJoinLabel<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignRight);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(penJoinComboBox<span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">3</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(brushStyleLabel<span class="operator">,</span> <span class="number">4</span><span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignRight);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(brushStyleComboBox<span class="operator">,</span> <span class="number">4</span><span class="operator">,</span> <span class="number">3</span>);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(otherOptionsLabel<span class="operator">,</span> <span class="number">5</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignRight);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(antialiasingCheckBox<span class="operator">,</span> <span class="number">5</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignRight);
mainLayout<span class="operator">-</span><span class="operator">&gt;</span>addWidget(transformationsCheckBox<span class="operator">,</span> <span class="number">5</span><span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="number">1</span><span class="operator">,</span> <span class="number">2</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>AlignRight);
setLayout(mainLayout);
shapeChanged();
penChanged();
brushChanged();
antialiasingCheckBox<span class="operator">-</span><span class="operator">&gt;</span>setChecked(<span class="keyword">true</span>);
setWindowTitle(tr(<span class="string">&quot;Basic Drawing&quot;</span>));
}
<span class="type">void</span> Window<span class="operator">::</span>shapeChanged()
{
RenderArea<span class="operator">::</span>Shape shape <span class="operator">=</span> RenderArea<span class="operator">::</span>Shape(shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>itemData(
shapeComboBox<span class="operator">-</span><span class="operator">&gt;</span>currentIndex()<span class="operator">,</span> IdRole)<span class="operator">.</span>toInt());
renderArea<span class="operator">-</span><span class="operator">&gt;</span>setShape(shape);
}
<span class="type">void</span> Window<span class="operator">::</span>penChanged()
{
<span class="type">int</span> width <span class="operator">=</span> penWidthSpinBox<span class="operator">-</span><span class="operator">&gt;</span>value();
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>PenStyle style <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>PenStyle(penStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>itemData(
penStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>currentIndex()<span class="operator">,</span> IdRole)<span class="operator">.</span>toInt());
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>PenCapStyle cap <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>PenCapStyle(penCapComboBox<span class="operator">-</span><span class="operator">&gt;</span>itemData(
penCapComboBox<span class="operator">-</span><span class="operator">&gt;</span>currentIndex()<span class="operator">,</span> IdRole)<span class="operator">.</span>toInt());
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>PenJoinStyle join <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>PenJoinStyle(penJoinComboBox<span class="operator">-</span><span class="operator">&gt;</span>itemData(
penJoinComboBox<span class="operator">-</span><span class="operator">&gt;</span>currentIndex()<span class="operator">,</span> IdRole)<span class="operator">.</span>toInt());
renderArea<span class="operator">-</span><span class="operator">&gt;</span>setPen(<span class="type"><a href="qpen.html">QPen</a></span>(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>blue<span class="operator">,</span> width<span class="operator">,</span> style<span class="operator">,</span> cap<span class="operator">,</span> join));
}
<span class="type">void</span> Window<span class="operator">::</span>brushChanged()
{
<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BrushStyle style <span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>BrushStyle(brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>itemData(
brushStyleComboBox<span class="operator">-</span><span class="operator">&gt;</span>currentIndex()<span class="operator">,</span> IdRole)<span class="operator">.</span>toInt());
<span class="keyword">if</span> (style <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>LinearGradientPattern) {
<span class="type"><a href="qlineargradient.html">QLinearGradient</a></span> linearGradient(<span class="number">0</span><span class="operator">,</span> <span class="number">0</span><span class="operator">,</span> <span class="number">100</span><span class="operator">,</span> <span class="number">100</span>);
linearGradient<span class="operator">.</span>setColorAt(<span class="number">0.0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>white);
linearGradient<span class="operator">.</span>setColorAt(<span class="number">0.2</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>green);
linearGradient<span class="operator">.</span>setColorAt(<span class="number">1.0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black);
renderArea<span class="operator">-</span><span class="operator">&gt;</span>setBrush(linearGradient);
} <span class="keyword">else</span> <span class="keyword">if</span> (style <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>RadialGradientPattern) {
<span class="type"><a href="qradialgradient.html">QRadialGradient</a></span> radialGradient(<span class="number">50</span><span class="operator">,</span> <span class="number">50</span><span class="operator">,</span> <span class="number">50</span><span class="operator">,</span> <span class="number">70</span><span class="operator">,</span> <span class="number">70</span>);
radialGradient<span class="operator">.</span>setColorAt(<span class="number">0.0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>white);
radialGradient<span class="operator">.</span>setColorAt(<span class="number">0.2</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>green);
radialGradient<span class="operator">.</span>setColorAt(<span class="number">1.0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black);
renderArea<span class="operator">-</span><span class="operator">&gt;</span>setBrush(radialGradient);
} <span class="keyword">else</span> <span class="keyword">if</span> (style <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>ConicalGradientPattern) {
<span class="type"><a href="qconicalgradient.html">QConicalGradient</a></span> conicalGradient(<span class="number">50</span><span class="operator">,</span> <span class="number">50</span><span class="operator">,</span> <span class="number">150</span>);
conicalGradient<span class="operator">.</span>setColorAt(<span class="number">0.0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>white);
conicalGradient<span class="operator">.</span>setColorAt(<span class="number">0.2</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>green);
conicalGradient<span class="operator">.</span>setColorAt(<span class="number">1.0</span><span class="operator">,</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>black);
renderArea<span class="operator">-</span><span class="operator">&gt;</span>setBrush(conicalGradient);
} <span class="keyword">else</span> <span class="keyword">if</span> (style <span class="operator">=</span><span class="operator">=</span> <span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>TexturePattern) {
renderArea<span class="operator">-</span><span class="operator">&gt;</span>setBrush(<span class="type"><a href="qbrush.html">QBrush</a></span>(<span class="type"><a href="qpixmap.html">QPixmap</a></span>(<span class="string">&quot;:/images/brick.png&quot;</span>)));
} <span class="keyword">else</span> {
renderArea<span class="operator">-</span><span class="operator">&gt;</span>setBrush(<span class="type"><a href="qbrush.html">QBrush</a></span>(<span class="type"><a href="qt.html">Qt</a></span><span class="operator">::</span>green<span class="operator">,</span> style));
}
}</pre>
</div>
<!-- @@@painting/basicdrawing/window.cpp -->
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