Home · All Classes · Main Classes · Grouped Classes · Modules · Functions

mainwindow.cpp Example File
^{painting/svgviewer/mainwindow.cpp}

 /****************************************************************************
 **
 ** Copyright (C) 2005-2007 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://www.trolltech.com/products/qt/opensource.html
 **
 ** If you are unsure which license is appropriate for your use, please
 ** review the following information:
 ** http://www.trolltech.com/products/qt/licensing.html or contact the
 ** sales department at [email protected].
 **
 ** 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 "mainwindow.h"

 MainWindow::MainWindow()
     : QMainWindow()
 {
     area = new SvgWindow;

     QMenu *fileMenu = new QMenu(tr("&File"), this);
     QAction *openAction = fileMenu->addAction(tr("&Open..."));
     openAction->setShortcut(QKeySequence(tr("Ctrl+O")));
     QAction *quitAction = fileMenu->addAction(tr("E&xit"));
     quitAction->setShortcut(QKeySequence(tr("Ctrl+Q")));

     menuBar()->addMenu(fileMenu);

     QMenu *rendererMenu = new QMenu(tr("&Renderer"), this);
     nativeAction = rendererMenu->addAction(tr("&Native"));
     nativeAction->setCheckable(true);
     nativeAction->setChecked(true);
     #ifndef QT_NO_OPENGL
     glAction = rendererMenu->addAction(tr("&OpenGL"));
     glAction->setCheckable(true);
     #endif
     imageAction = rendererMenu->addAction(tr("&Image"));
     imageAction->setCheckable(true);

     QActionGroup *rendererGroup = new QActionGroup(this);
     rendererGroup->addAction(nativeAction);
     #ifndef QT_NO_OPENGL
     rendererGroup->addAction(glAction);
     #endif
     rendererGroup->addAction(imageAction);

     menuBar()->addMenu(rendererMenu);

     connect(openAction, SIGNAL(triggered()), this, SLOT(openFile()));
     connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
     connect(rendererGroup, SIGNAL(triggered(QAction *)),
             this, SLOT(setRenderer(QAction *)));

     setCentralWidget(area);
     setWindowTitle(tr("SVG Viewer"));
 }

 void MainWindow::openFile(const QString &path)
 {
     QString fileName;
     if (path.isNull())
         fileName = QFileDialog::getOpenFileName(this, tr("Open SVG File"),
                                                 currentPath, "*.svg");
     else
         fileName = path;

     if (!fileName.isEmpty()) {
         area->openFile(fileName);
         if (!fileName.startsWith(":/")) {
             currentPath = fileName;
             setWindowTitle(tr("%1 - SVGViewer").arg(currentPath));
         }
     }
 }

 void MainWindow::setRenderer(QAction *action)
 {
     if (action == nativeAction)
         area->setRenderer(SvgWindow::Native);
     #ifndef QT_NO_OPENGL
     else if (action == glAction)
         area->setRenderer(SvgWindow::OpenGL);
     #endif
     else if (action == imageAction)
         area->setRenderer(SvgWindow::Image);
 }