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# svgview.h Example File
painting/svgviewer/svgview.h

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     #ifndef SVGVIEW_H
     #define SVGVIEW_H

     #include <QWidget>
     #include <QImage>
     #ifndef QT_NO_OPENGL
     #include <QGLWidget>
     #endif

     class QPaintEvent;
     class QSvgRenderer;
     class QWheelEvent;

     class SvgRasterView : public QWidget
     {
         Q_OBJECT

     public:
         SvgRasterView(const QString &file, QWidget *parent=0);

         virtual QSize sizeHint() const;

     protected slots:
         void poluteImage();
     protected:
         virtual void paintEvent(QPaintEvent *event);
         virtual void wheelEvent(QWheelEvent *event);

     private:
         QSvgRenderer *doc;
         QImage buffer;
         bool m_dirty;
     };

     class SvgNativeView : public QWidget
     {
         Q_OBJECT

     public:
         SvgNativeView(const QString &file, QWidget *parent=0);

         virtual QSize sizeHint() const;
     protected:
         virtual void paintEvent(QPaintEvent *event);
         virtual void wheelEvent(QWheelEvent *event);

     private:
         QSvgRenderer *doc;
     };

     #ifndef QT_NO_OPENGL
     class SvgGLView : public QGLWidget
     {
         Q_OBJECT

     public:
         SvgGLView(const QString &file, QWidget *parent=0);

         void setHighQualityAntialiasing(bool highQualityAntialiasing);

         virtual QSize sizeHint() const;
     protected:
         virtual void paintEvent(QPaintEvent *event);
         virtual void wheelEvent(QWheelEvent *event);

     private:
         QSvgRenderer *doc;

         bool highQualityAntialiasing;
     };
     #endif

     #endif