svgview.h Example File

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 #ifndef SVGVIEW_H
 #define SVGVIEW_H

 #include <QGraphicsView>

 class QGraphicsSvgItem;
 class QSvgRenderer;
 class QWheelEvent;
 class QPaintEvent;

 class SvgView : public QGraphicsView
 {
     Q_OBJECT

 public:
     enum RendererType { Native, OpenGL, Image };

     explicit SvgView(QWidget *parent = nullptr);

     bool openFile(const QString &fileName);
     void setRenderer(RendererType type = Native);
     void drawBackground(QPainter *p, const QRectF &rect) override;

     QSize svgSize() const;
     QSvgRenderer *renderer() const;

     qreal zoomFactor() const;

 public slots:
     void setHighQualityAntialiasing(bool highQualityAntialiasing);
     void setViewBackground(bool enable);
     void setViewOutline(bool enable);
     void zoomIn();
     void zoomOut();
     void resetZoom();

 signals:
     void zoomChanged();

 protected:
     void wheelEvent(QWheelEvent *event) override;
     void paintEvent(QPaintEvent *event) override;

 private:
     void zoomBy(qreal factor);

     RendererType m_renderer;

     QGraphicsSvgItem *m_svgItem;
     QGraphicsRectItem *m_backgroundItem;
     QGraphicsRectItem *m_outlineItem;

     QImage m_image;
 };
 #endif // SVGVIEW_H