svgwindow.cpp Example File
painting/svgviewer/svgwindow.cpp
/****************************************************************************
**
** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
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** This file is part of the documentation of the Qt Toolkit.
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#include <QtGui>
#include "svgview.h"
#include "svgwindow.h"
SvgWindow::SvgWindow()
: QScrollArea()
{
QWidget *view = new QWidget(this);
renderer = SvgWindow::Image;
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();
}