<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>Qt 4.3: window.cpp Example File (painting/basicdrawing/window.cpp)</title> <link href="classic.css" rel="stylesheet" type="text/css" /> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td align="left" valign="top" width="32"><a href="http://www.trolltech.com/products/qt"><img src="images/qt-logo.png" align="left" width="32" height="32" border="0" /></a></td> <td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> · <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a> · <a href="functions.html"><font color="#004faf">Functions</font></a></td> <td align="right" valign="top" width="230"><a href="http://www.trolltech.com"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></a></td></tr></table><h1 align="center">window.cpp Example File<br /><sup><sup>painting/basicdrawing/window.cpp</sup></sup></h1> <pre><span class="comment"> /**************************************************************************** ** ** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved. ** ** This file is part of the example classes of the Qt Toolkit. ** ** This file may be used under the terms of the GNU General Public ** License versions 2.0 or 3.0 as published by the Free Software ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Alternatively you may (at ** your option) use any later version of the GNU General Public ** License if such license has been publicly approved by Trolltech ASA ** (or its successors, if any) and the KDE Free Qt Foundation. In ** addition, as a special exception, Trolltech gives you certain ** additional rights. These rights are described in the Trolltech GPL ** Exception version 1.1, which can be found at ** http://www.trolltech.com/products/qt/gplexception/ and in the file ** GPL_EXCEPTION.txt in this package. ** ** Please review the following information to ensure GNU General ** Public Licensing requirements will be met: ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If ** you are unsure which license is appropriate for your use, please ** review the following information: ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview ** or contact the sales department at sales@trolltech.com. ** ** In addition, as a special exception, Trolltech, as the sole ** copyright holder for Qt Designer, grants users of the Qt/Eclipse ** Integration plug-in the right for the Qt/Eclipse Integration to ** link to functionality provided by Qt Designer and its related ** libraries. ** ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly ** granted herein. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/</span> #include <QtGui> #include "renderarea.h" #include "window.h" const int IdRole = Qt::UserRole; Window::Window() { renderArea = new RenderArea; shapeComboBox = new QComboBox; shapeComboBox->addItem(tr("Polygon"), RenderArea::Polygon); shapeComboBox->addItem(tr("Rectangle"), RenderArea::Rect); shapeComboBox->addItem(tr("Round Rectangle"), RenderArea::RoundRect); shapeComboBox->addItem(tr("Ellipse"), RenderArea::Ellipse); shapeComboBox->addItem(tr("Pie"), RenderArea::Pie); shapeComboBox->addItem(tr("Chord"), RenderArea::Chord); shapeComboBox->addItem(tr("Path"), RenderArea::Path); shapeComboBox->addItem(tr("Line"), RenderArea::Line); shapeComboBox->addItem(tr("Polyline"), RenderArea::Polyline); shapeComboBox->addItem(tr("Arc"), RenderArea::Arc); shapeComboBox->addItem(tr("Points"), RenderArea::Points); shapeComboBox->addItem(tr("Text"), RenderArea::Text); shapeComboBox->addItem(tr("Pixmap"), RenderArea::Pixmap); shapeLabel = new QLabel(tr("&Shape:")); shapeLabel->setBuddy(shapeComboBox); penWidthSpinBox = new QSpinBox; penWidthSpinBox->setRange(0, 20); penWidthSpinBox->setSpecialValueText(tr("0 (cosmetic pen)")); penWidthLabel = new QLabel(tr("Pen &Width:")); penWidthLabel->setBuddy(penWidthSpinBox); penStyleComboBox = new QComboBox; penStyleComboBox->addItem(tr("Solid"), Qt::SolidLine); penStyleComboBox->addItem(tr("Dash"), Qt::DashLine); penStyleComboBox->addItem(tr("Dot"), Qt::DotLine); penStyleComboBox->addItem(tr("Dash Dot"), Qt::DashDotLine); penStyleComboBox->addItem(tr("Dash Dot Dot"), Qt::DashDotDotLine); penStyleComboBox->addItem(tr("None"), Qt::NoPen); penStyleLabel = new QLabel(tr("&Pen Style:")); penStyleLabel->setBuddy(penStyleComboBox); penCapComboBox = new QComboBox; penCapComboBox->addItem(tr("Flat"), Qt::FlatCap); penCapComboBox->addItem(tr("Square"), Qt::SquareCap); penCapComboBox->addItem(tr("Round"), Qt::RoundCap); penCapLabel = new QLabel(tr("Pen &Cap:")); penCapLabel->setBuddy(penCapComboBox); penJoinComboBox = new QComboBox; penJoinComboBox->addItem(tr("Miter"), Qt::MiterJoin); penJoinComboBox->addItem(tr("Bevel"), Qt::BevelJoin); penJoinComboBox->addItem(tr("Round"), Qt::RoundJoin); penJoinLabel = new QLabel(tr("Pen &Join:")); penJoinLabel->setBuddy(penJoinComboBox); brushStyleComboBox = new QComboBox; brushStyleComboBox->addItem(tr("Linear Gradient"), Qt::LinearGradientPattern); brushStyleComboBox->addItem(tr("Radial Gradient"), Qt::RadialGradientPattern); brushStyleComboBox->addItem(tr("Conical Gradient"), Qt::ConicalGradientPattern); brushStyleComboBox->addItem(tr("Texture"), Qt::TexturePattern); brushStyleComboBox->addItem(tr("Solid"), Qt::SolidPattern); brushStyleComboBox->addItem(tr("Horizontal"), Qt::HorPattern); brushStyleComboBox->addItem(tr("Vertical"), Qt::VerPattern); brushStyleComboBox->addItem(tr("Cross"), Qt::CrossPattern); brushStyleComboBox->addItem(tr("Backward Diagonal"), Qt::BDiagPattern); brushStyleComboBox->addItem(tr("Forward Diagonal"), Qt::FDiagPattern); brushStyleComboBox->addItem(tr("Diagonal Cross"), Qt::DiagCrossPattern); brushStyleComboBox->addItem(tr("Dense 1"), Qt::Dense1Pattern); brushStyleComboBox->addItem(tr("Dense 2"), Qt::Dense2Pattern); brushStyleComboBox->addItem(tr("Dense 3"), Qt::Dense3Pattern); brushStyleComboBox->addItem(tr("Dense 4"), Qt::Dense4Pattern); brushStyleComboBox->addItem(tr("Dense 5"), Qt::Dense5Pattern); brushStyleComboBox->addItem(tr("Dense 6"), Qt::Dense6Pattern); brushStyleComboBox->addItem(tr("Dense 7"), Qt::Dense7Pattern); brushStyleComboBox->addItem(tr("None"), Qt::NoBrush); brushStyleLabel = new QLabel(tr("&Brush Style:")); brushStyleLabel->setBuddy(brushStyleComboBox); otherOptionsLabel = new QLabel(tr("Other Options:")); antialiasingCheckBox = new QCheckBox(tr("&Antialiasing")); transformationsCheckBox = new QCheckBox(tr("&Transformations")); connect(shapeComboBox, SIGNAL(activated(int)), this, SLOT(shapeChanged())); connect(penWidthSpinBox, SIGNAL(valueChanged(int)), this, SLOT(penChanged())); connect(penStyleComboBox, SIGNAL(activated(int)), this, SLOT(penChanged())); connect(penCapComboBox, SIGNAL(activated(int)), this, SLOT(penChanged())); connect(penJoinComboBox, SIGNAL(activated(int)), this, SLOT(penChanged())); connect(brushStyleComboBox, SIGNAL(activated(int)), this, SLOT(brushChanged())); connect(antialiasingCheckBox, SIGNAL(toggled(bool)), renderArea, SLOT(setAntialiased(bool))); connect(transformationsCheckBox, SIGNAL(toggled(bool)), renderArea, SLOT(setTransformed(bool))); QGridLayout *mainLayout = new QGridLayout; mainLayout->setColumnStretch(0, 1); mainLayout->setColumnStretch(3, 1); mainLayout->addWidget(renderArea, 0, 0, 1, 4); mainLayout->setRowMinimumHeight(1, 6); mainLayout->addWidget(shapeLabel, 2, 1, Qt::AlignRight); mainLayout->addWidget(shapeComboBox, 2, 2); mainLayout->addWidget(penWidthLabel, 3, 1, Qt::AlignRight); mainLayout->addWidget(penWidthSpinBox, 3, 2); mainLayout->addWidget(penStyleLabel, 4, 1, Qt::AlignRight); mainLayout->addWidget(penStyleComboBox, 4, 2); mainLayout->addWidget(penCapLabel, 5, 1, Qt::AlignRight); mainLayout->addWidget(penCapComboBox, 5, 2); mainLayout->addWidget(penJoinLabel, 6, 1, Qt::AlignRight); mainLayout->addWidget(penJoinComboBox, 6, 2); mainLayout->addWidget(brushStyleLabel, 7, 1, Qt::AlignRight); mainLayout->addWidget(brushStyleComboBox, 7, 2); mainLayout->setRowMinimumHeight(8, 6); mainLayout->addWidget(otherOptionsLabel, 9, 1, Qt::AlignRight); mainLayout->addWidget(antialiasingCheckBox, 9, 2); mainLayout->addWidget(transformationsCheckBox, 10, 2); setLayout(mainLayout); shapeChanged(); penChanged(); brushChanged(); antialiasingCheckBox->setChecked(true); setWindowTitle(tr("Basic Drawing")); } void Window::shapeChanged() { RenderArea::Shape shape = RenderArea::Shape(shapeComboBox->itemData( shapeComboBox->currentIndex(), IdRole).toInt()); renderArea->setShape(shape); } void Window::penChanged() { int width = penWidthSpinBox->value(); Qt::PenStyle style = Qt::PenStyle(penStyleComboBox->itemData( penStyleComboBox->currentIndex(), IdRole).toInt()); Qt::PenCapStyle cap = Qt::PenCapStyle(penCapComboBox->itemData( penCapComboBox->currentIndex(), IdRole).toInt()); Qt::PenJoinStyle join = Qt::PenJoinStyle(penJoinComboBox->itemData( penJoinComboBox->currentIndex(), IdRole).toInt()); renderArea->setPen(QPen(Qt::blue, width, style, cap, join)); } void Window::brushChanged() { Qt::BrushStyle style = Qt::BrushStyle(brushStyleComboBox->itemData( brushStyleComboBox->currentIndex(), IdRole).toInt()); if (style == Qt::LinearGradientPattern) { QLinearGradient linearGradient(0, 0, 100, 100); linearGradient.setColorAt(0.0, Qt::white); linearGradient.setColorAt(0.2, Qt::green); linearGradient.setColorAt(1.0, Qt::black); renderArea->setBrush(linearGradient); } else if (style == Qt::RadialGradientPattern) { QRadialGradient radialGradient(50, 50, 50, 70, 70); radialGradient.setColorAt(0.0, Qt::white); radialGradient.setColorAt(0.2, Qt::green); radialGradient.setColorAt(1.0, Qt::black); renderArea->setBrush(radialGradient); } else if (style == Qt::ConicalGradientPattern) { QConicalGradient conicalGradient(50, 50, 150); conicalGradient.setColorAt(0.0, Qt::white); conicalGradient.setColorAt(0.2, Qt::green); conicalGradient.setColorAt(1.0, Qt::black); renderArea->setBrush(conicalGradient); } else if (style == Qt::TexturePattern) { renderArea->setBrush(QBrush(QPixmap(":/images/brick.png"))); } else { renderArea->setBrush(QBrush(Qt::green, style)); } }</pre> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="30%">Copyright © 2008 <a href="trolltech.html">Trolltech</a></td> <td width="40%" align="center"><a href="trademarks.html">Trademarks</a></td> <td width="30%" align="right"><div align="right">Qt 4.3.4</div></td> </tr></table></div></address></body> </html>