<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>window.cpp Example File | Qt Widgets 5.12.6</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-painting-basicdrawing-example.html">Basic Drawing Example</a></td><td >window.cpp Example File</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtwidgets-index.html">Qt 5.12.6 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">window.cpp Example File</h1> <span class="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) 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, ** 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 "renderarea.h"</span> <span class="preprocessor">#include "window.h"</span> <span class="preprocessor">#include <QtWidgets></span> <span class="keyword">const</span> <span class="type">int</span> IdRole <span class="operator">=</span> <span class="type"><a href="../qtcore/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">></span>addItem(tr(<span class="string">"Polygon"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Polygon); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Rectangle"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Rect); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Rounded Rectangle"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>RoundedRect); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Ellipse"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Ellipse); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Pie"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Pie); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Chord"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Chord); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Path"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Path); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Line"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Line); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Polyline"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Polyline); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Arc"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Arc); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Points"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Points); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Text"</span>)<span class="operator">,</span> RenderArea<span class="operator">::</span>Text); shapeComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Pixmap"</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">"&Shape:"</span>)); shapeLabel<span class="operator">-</span><span class="operator">></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">></span>setRange(<span class="number">0</span><span class="operator">,</span> <span class="number">20</span>); penWidthSpinBox<span class="operator">-</span><span class="operator">></span>setSpecialValueText(tr(<span class="string">"0 (cosmetic pen)"</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">"Pen &Width:"</span>)); penWidthLabel<span class="operator">-</span><span class="operator">></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">></span>addItem(tr(<span class="string">"Solid"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>SolidLine)); penStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dash"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>DashLine)); penStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dot"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>DotLine)); penStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dash Dot"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>DashDotLine)); penStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dash Dot Dot"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>DashDotDotLine)); penStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"None"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/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">"&Pen Style:"</span>)); penStyleLabel<span class="operator">-</span><span class="operator">></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">></span>addItem(tr(<span class="string">"Flat"</span>)<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>FlatCap); penCapComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Square"</span>)<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>SquareCap); penCapComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Round"</span>)<span class="operator">,</span> <span class="type"><a href="../qtcore/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">"Pen &Cap:"</span>)); penCapLabel<span class="operator">-</span><span class="operator">></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">></span>addItem(tr(<span class="string">"Miter"</span>)<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>MiterJoin); penJoinComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Bevel"</span>)<span class="operator">,</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>BevelJoin); penJoinComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Round"</span>)<span class="operator">,</span> <span class="type"><a href="../qtcore/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">"Pen &Join:"</span>)); penJoinLabel<span class="operator">-</span><span class="operator">></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">></span>addItem(tr(<span class="string">"Linear Gradient"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>LinearGradientPattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Radial Gradient"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>RadialGradientPattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Conical Gradient"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ConicalGradientPattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Texture"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>TexturePattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Solid"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>SolidPattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Horizontal"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>HorPattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Vertical"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>VerPattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Cross"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>CrossPattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Backward Diagonal"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>BDiagPattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Forward Diagonal"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>FDiagPattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Diagonal Cross"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>DiagCrossPattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dense 1"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Dense1Pattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dense 2"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Dense2Pattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dense 3"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Dense3Pattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dense 4"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Dense4Pattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dense 5"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Dense5Pattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dense 6"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Dense6Pattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"Dense 7"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>Dense7Pattern)); brushStyleComboBox<span class="operator">-</span><span class="operator">></span>addItem(tr(<span class="string">"None"</span>)<span class="operator">,</span> <span class="keyword">static_cast</span><span class="operator"><</span><span class="type">int</span><span class="operator">></span>(<span class="type"><a href="../qtcore/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">"&Brush:"</span>)); brushStyleLabel<span class="operator">-</span><span class="operator">></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">"Options:"</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">"&Antialiasing"</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">"&Transformations"</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(bool))<span class="operator">,</span> renderArea<span class="operator">,</span> SLOT(setAntialiased(bool))); connect(transformationsCheckBox<span class="operator">,</span> SIGNAL(toggled(bool))<span class="operator">,</span> renderArea<span class="operator">,</span> SLOT(setTransformed(bool))); <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>; mainLayout<span class="operator">-</span><span class="operator">></span>setColumnStretch(<span class="number">0</span><span class="operator">,</span> <span class="number">1</span>); mainLayout<span class="operator">-</span><span class="operator">></span>setColumnStretch(<span class="number">3</span><span class="operator">,</span> <span class="number">1</span>); mainLayout<span class="operator">-</span><span class="operator">></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">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainLayout<span class="operator">-</span><span class="operator">></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">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainLayout<span class="operator">-</span><span class="operator">></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">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainLayout<span class="operator">-</span><span class="operator">></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">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainLayout<span class="operator">-</span><span class="operator">></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">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainLayout<span class="operator">-</span><span class="operator">></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">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainLayout<span class="operator">-</span><span class="operator">></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">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainLayout<span class="operator">-</span><span class="operator">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); mainLayout<span class="operator">-</span><span class="operator">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>AlignRight); setLayout(mainLayout); shapeChanged(); penChanged(); brushChanged(); antialiasingCheckBox<span class="operator">-</span><span class="operator">></span>setChecked(<span class="keyword">true</span>); setWindowTitle(tr(<span class="string">"Basic Drawing"</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">></span>itemData( shapeComboBox<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">,</span> IdRole)<span class="operator">.</span>toInt()); renderArea<span class="operator">-</span><span class="operator">></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">></span>value(); <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>PenStyle style <span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>PenStyle(penStyleComboBox<span class="operator">-</span><span class="operator">></span>itemData( penStyleComboBox<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">,</span> IdRole)<span class="operator">.</span>toInt()); <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>PenCapStyle cap <span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>PenCapStyle(penCapComboBox<span class="operator">-</span><span class="operator">></span>itemData( penCapComboBox<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">,</span> IdRole)<span class="operator">.</span>toInt()); <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>PenJoinStyle join <span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>PenJoinStyle(penJoinComboBox<span class="operator">-</span><span class="operator">></span>itemData( penJoinComboBox<span class="operator">-</span><span class="operator">></span>currentIndex()<span class="operator">,</span> IdRole)<span class="operator">.</span>toInt()); renderArea<span class="operator">-</span><span class="operator">></span>setPen(<span class="type"><a href="../qtgui/qpen.html">QPen</a></span>(<span class="type"><a href="../qtcore/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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>BrushStyle style <span class="operator">=</span> <span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>BrushStyle(brushStyleComboBox<span class="operator">-</span><span class="operator">></span>itemData( brushStyleComboBox<span class="operator">-</span><span class="operator">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>LinearGradientPattern) { <span class="type"><a href="../qtgui/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="../qtcore/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="../qtcore/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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>black); renderArea<span class="operator">-</span><span class="operator">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>RadialGradientPattern) { <span class="type"><a href="../qtgui/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="../qtcore/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="../qtcore/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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>black); renderArea<span class="operator">-</span><span class="operator">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>ConicalGradientPattern) { <span class="type"><a href="../qtgui/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="../qtcore/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="../qtcore/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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>black); renderArea<span class="operator">-</span><span class="operator">></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="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>TexturePattern) { renderArea<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type"><a href="../qtgui/qbrush.html">QBrush</a></span>(<span class="type"><a href="../qtgui/qpixmap.html">QPixmap</a></span>(<span class="string">":/images/brick.png"</span>))); } <span class="keyword">else</span> { renderArea<span class="operator">-</span><span class="operator">></span>setBrush(<span class="type"><a href="../qtgui/qbrush.html">QBrush</a></span>(<span class="type"><a href="../qtcore/qt.html">Qt</a></span><span class="operator">::</span>green<span class="operator">,</span> style)); } } </pre> </div> <!-- @@@painting/basicdrawing/window.cpp --> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>