#include <QtGui>#include "svgview.h"#include "svgwindow.h"SvgWindow::SvgWindow()    : QScrollArea(){    QWidget *view = new QWidget(this);    setWidget(view);}void SvgWindow::openFile(const QString &file){    currentPath = file;    setRenderer();}void SvgWindow::setRenderer(){    QWidget *view;    view = new SvgView(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();}