<?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 4.2: window.cpp Example File (painting/painterpaths/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/painterpaths/window.cpp</sup></sup></h1> <pre> /**************************************************************************** ** ** Copyright (C) 2005-2006 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 version 2.0 as published by the Free Software Foundation ** and appearing in the file LICENSE.GPL included in the packaging of ** this file. Please review the following information to ensure GNU ** General Public Licensing requirements will be met: ** http:<span class="comment">//www.trolltech.com/products/qt/opensource.html</span> ** ** If you are unsure which license is appropriate for your use, please ** review the following information: ** http:<span class="comment">//www.trolltech.com/products/qt/licensing.html or contact the</span> ** sales department at sales@trolltech.com. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ #include <QtGui> #include <math.h> #include "renderarea.h" #include "window.h" const float Pi = 3.14159f; Window::Window() { QPainterPath rectPath; rectPath.moveTo(20.0, 30.0); rectPath.lineTo(80.0, 30.0); rectPath.lineTo(80.0, 70.0); rectPath.lineTo(20.0, 70.0); rectPath.closeSubpath(); QPainterPath roundRectPath; roundRectPath.moveTo(80.0, 35.0); roundRectPath.arcTo(70.0, 30.0, 10.0, 10.0, 0.0, 90.0); roundRectPath.lineTo(25.0, 30.0); roundRectPath.arcTo(20.0, 30.0, 10.0, 10.0, 90.0, 90.0); roundRectPath.lineTo(20.0, 65.0); roundRectPath.arcTo(20.0, 60.0, 10.0, 10.0, 180.0, 90.0); roundRectPath.lineTo(75.0, 70.0); roundRectPath.arcTo(70.0, 60.0, 10.0, 10.0, 270.0, 90.0); roundRectPath.closeSubpath(); QPainterPath ellipsePath; ellipsePath.moveTo(80.0, 50.0); ellipsePath.arcTo(20.0, 30.0, 60.0, 40.0, 0.0, 360.0); QPainterPath piePath; piePath.moveTo(50.0, 50.0); piePath.arcTo(20.0, 30.0, 60.0, 40.0, 60.0, 240.0); piePath.closeSubpath(); QPainterPath polygonPath; polygonPath.moveTo(10.0, 80.0); polygonPath.lineTo(20.0, 10.0); polygonPath.lineTo(80.0, 30.0); polygonPath.lineTo(90.0, 70.0); polygonPath.closeSubpath(); QPainterPath groupPath; groupPath.moveTo(60.0, 40.0); groupPath.arcTo(20.0, 20.0, 40.0, 40.0, 0.0, 360.0); groupPath.moveTo(40.0, 40.0); groupPath.lineTo(40.0, 80.0); groupPath.lineTo(80.0, 80.0); groupPath.lineTo(80.0, 40.0); groupPath.closeSubpath(); QPainterPath textPath; QFont timesFont("Times", 50); timesFont.setStyleStrategy(QFont::ForceOutline); textPath.addText(10, 70, timesFont, tr("Qt")); QPainterPath bezierPath; bezierPath.moveTo(20, 30); bezierPath.cubicTo(80, 0, 50, 50, 80, 80); QPainterPath starPath; starPath.moveTo(90, 50); for (int i = 1; i < 5; ++i) { starPath.lineTo(50 + 40 * cos(0.8 * i * Pi), 50 + 40 * sin(0.8 * i * Pi)); } starPath.closeSubpath(); renderAreas[0] = new RenderArea(rectPath); renderAreas[1] = new RenderArea(roundRectPath); renderAreas[2] = new RenderArea(ellipsePath); renderAreas[3] = new RenderArea(piePath); renderAreas[4] = new RenderArea(polygonPath); renderAreas[5] = new RenderArea(groupPath); renderAreas[6] = new RenderArea(textPath); renderAreas[7] = new RenderArea(bezierPath); renderAreas[8] = new RenderArea(starPath); Q_ASSERT(NumRenderAreas == 9); fillRuleComboBox = new QComboBox; fillRuleComboBox->addItem(tr("Odd Even"), Qt::OddEvenFill); fillRuleComboBox->addItem(tr("Winding"), Qt::WindingFill); fillRuleLabel = new QLabel(tr("Fill &Rule:")); fillRuleLabel->setBuddy(fillRuleComboBox); fillColor1ComboBox = new QComboBox; populateWithColors(fillColor1ComboBox); fillColor1ComboBox->setCurrentIndex( fillColor1ComboBox->findText("mediumslateblue")); fillColor2ComboBox = new QComboBox; populateWithColors(fillColor2ComboBox); fillColor2ComboBox->setCurrentIndex( fillColor2ComboBox->findText("cornsilk")); fillGradientLabel = new QLabel(tr("&Fill Gradient:")); fillGradientLabel->setBuddy(fillColor1ComboBox); fillToLabel = new QLabel(tr("to")); fillToLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed); penWidthSpinBox = new QSpinBox; penWidthSpinBox->setRange(0, 20); penWidthLabel = new QLabel(tr("&Pen Width:")); penWidthLabel->setBuddy(penWidthSpinBox); penColorComboBox = new QComboBox; populateWithColors(penColorComboBox); penColorComboBox->setCurrentIndex( penColorComboBox->findText("darkslateblue")); penColorLabel = new QLabel(tr("Pen &Color:")); penColorLabel->setBuddy(penColorComboBox); rotationAngleSpinBox = new QSpinBox; rotationAngleSpinBox->setRange(0, 359); rotationAngleSpinBox->setWrapping(true); rotationAngleSpinBox->setSuffix("\xB0"); rotationAngleLabel = new QLabel(tr("&Rotation Angle:")); rotationAngleLabel->setBuddy(rotationAngleSpinBox); connect(fillRuleComboBox, SIGNAL(activated(int)), this, SLOT(fillRuleChanged())); connect(fillColor1ComboBox, SIGNAL(activated(int)), this, SLOT(fillGradientChanged())); connect(fillColor2ComboBox, SIGNAL(activated(int)), this, SLOT(fillGradientChanged())); connect(penColorComboBox, SIGNAL(activated(int)), this, SLOT(penColorChanged())); for (int i = 0; i < NumRenderAreas; ++i) { connect(penWidthSpinBox, SIGNAL(valueChanged(int)), renderAreas[i], SLOT(setPenWidth(int))); connect(rotationAngleSpinBox, SIGNAL(valueChanged(int)), renderAreas[i], SLOT(setRotationAngle(int))); } QGridLayout *topLayout = new QGridLayout; for (int i = 0; i < NumRenderAreas; ++i) topLayout->addWidget(renderAreas[i], i / 3, i % 3); QGridLayout *mainLayout = new QGridLayout; mainLayout->addLayout(topLayout, 0, 0, 1, 4); mainLayout->addWidget(fillRuleLabel, 1, 0); mainLayout->addWidget(fillRuleComboBox, 1, 1, 1, 3); mainLayout->addWidget(fillGradientLabel, 2, 0); mainLayout->addWidget(fillColor1ComboBox, 2, 1); mainLayout->addWidget(fillToLabel, 2, 2); mainLayout->addWidget(fillColor2ComboBox, 2, 3); mainLayout->addWidget(penWidthLabel, 3, 0); mainLayout->addWidget(penWidthSpinBox, 3, 1, 1, 3); mainLayout->addWidget(penColorLabel, 4, 0); mainLayout->addWidget(penColorComboBox, 4, 1, 1, 3); mainLayout->addWidget(rotationAngleLabel, 5, 0); mainLayout->addWidget(rotationAngleSpinBox, 5, 1, 1, 3); setLayout(mainLayout); fillRuleChanged(); fillGradientChanged(); penColorChanged(); penWidthSpinBox->setValue(2); setWindowTitle(tr("Painter Paths")); } void Window::fillRuleChanged() { Qt::FillRule rule = (Qt::FillRule)currentItemData(fillRuleComboBox).toInt(); for (int i = 0; i < NumRenderAreas; ++i) renderAreas[i]->setFillRule(rule); } void Window::fillGradientChanged() { QColor color1 = qvariant_cast<QColor>(currentItemData(fillColor1ComboBox)); QColor color2 = qvariant_cast<QColor>(currentItemData(fillColor2ComboBox)); for (int i = 0; i < NumRenderAreas; ++i) renderAreas[i]->setFillGradient(color1, color2); } void Window::penColorChanged() { QColor color = qvariant_cast<QColor>(currentItemData(penColorComboBox)); for (int i = 0; i < NumRenderAreas; ++i) renderAreas[i]->setPenColor(color); } void Window::populateWithColors(QComboBox *comboBox) { QStringList colorNames = QColor::colorNames(); foreach (QString name, colorNames) comboBox->addItem(name, QColor(name)); } QVariant Window::currentItemData(QComboBox *comboBox) { return comboBox->itemData(comboBox->currentIndex()); }</pre> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="30%">Copyright © 2006 <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 4.2.1</div></td> </tr></table></div></address></body> </html>