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

 /****************************************************************************
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 ** Copyright (C) 2005-2007 Trolltech ASA. All rights reserved.
 **
 ** This file is part of the example classes of the Qt Toolkit.
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 ** 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:
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 ** review the following information:
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 #include <QtGui>

 #include "svgview.h"
 #include "svgwindow.h"

 SvgWindow::SvgWindow()
     : QScrollArea()
 {
     QWidget *view = new QWidget(this);
     renderer = SvgWindow::Native;
     setWidget(view);
 }

 void SvgWindow::openFile(const QString &file)
 {
     currentPath = file;
     setRenderer(renderer);
 }

 void SvgWindow::setRenderer(RendererType type)
 {
     renderer = type;
     QWidget *view;

     if (renderer == OpenGL) {
         #ifndef QT_NO_OPENGL
         view = new SvgGLView(currentPath, this);
         #endif
     } else if (renderer == Image)
         view = new SvgRasterView(currentPath, this);
     else
         view = new SvgNativeView(currentPath, this);

     setWidget(view);
     view->show();
 }

 void SvgWindow::mousePressEvent(QMouseEvent *event)
 {
     mousePressPos = event->pos();
     scrollBarValuesOnMousePress.rx() = horizontalScrollBar()->value();
     scrollBarValuesOnMousePress.ry() = verticalScrollBar()->value();
     event->accept();
 }

 void SvgWindow::mouseMoveEvent(QMouseEvent *event)
 {
     if (mousePressPos.isNull()) {
         event->ignore();
         return;
     }

     horizontalScrollBar()->setValue(scrollBarValuesOnMousePress.x() - event->pos().x() + mousePressPos.x());
     verticalScrollBar()->setValue(scrollBarValuesOnMousePress.y() - event->pos().y() + mousePressPos.y());
     horizontalScrollBar()->update();
     verticalScrollBar()->update();
     event->accept();
 }

 void SvgWindow::mouseReleaseEvent(QMouseEvent *event)
 {
     mousePressPos = QPoint();
     event->accept();
 }