Qt 4.7: embeddedsvgviewer.h Example File (demos/embedded/embeddedsvgviewer/embeddedsvgviewer.h)

Qt Reference Documentation

# embeddedsvgviewer.h Example File

demos/embedded/embeddedsvgviewer/embeddedsvgviewer.h

     /****************************************************************************
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     ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
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     ** This file is part of the demonstration applications of the Qt Toolkit.
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     ** GNU Lesser General Public License Usage
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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