source: trunk/demos/embedded/embeddedsvgviewer/embeddedsvgviewer.h

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#ifndef EMBEDDED_SVG_VIEWER_H
#define EMBEDDED_SVG_VIEWER_H

#include <QWidget>
#include <QString>
#include <QSvgRenderer>
#include <QSize>
#include <QMouseEvent>
#include <QSlider>
#include <QPushButton>

class EmbeddedSvgViewer : public QWidget
{
    Q_OBJECT
public:
    EmbeddedSvgViewer(const QString& filePath);
    virtual void paintEvent(QPaintEvent *event);
    void mouseMoveEvent ( QMouseEvent * event );
    void mousePressEvent ( QMouseEvent * event );
    void resizeEvent ( QResizeEvent * event );

public slots:
    void setZoom(int); // 100 <= newZoom < 0

private:
    QSvgRenderer* m_renderer;
    QSlider* m_zoomSlider;
    QPushButton* m_quitButton;
    QSize m_imageSize;
    qreal m_zoomLevel;
    qreal m_imageScale; // How many Image coords 1 widget pixel is worth

    QRectF m_viewBox;
    QRectF m_viewBoxBounds;
    QSizeF m_viewBoxSize;
    QPointF m_viewBoxCenter;
    QPointF m_viewBoxCenterOnMousePress;
    QPoint m_mousePress;

    void updateImageScale();
    QRectF getViewBox(QPointF viewBoxCenter);
};



#endif