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playground/graphicscale/Canvas.h

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+/*****************************************************************************
+ * Qwt Examples - Copyright (C) 2002 Uwe Rathmann
+ * This file may be used under the terms of the 3-clause BSD License
+ *****************************************************************************/
+
+#pragma once
+
+#include <QwtGlobal>
+#include <QWidget>
+
+class QSvgRenderer;
+class QwtGraphic;
+
+class Canvas : public QWidget
+{
+  public:
+    enum Mode
+    {
+        Svg,
+        VectorGraphic
+    };
+
+    Canvas( Mode, QWidget* parent = NULL );
+    virtual ~Canvas();
+
+    void setSvg( const QByteArray& );
+
+  protected:
+    virtual void paintEvent( QPaintEvent* ) QWT_OVERRIDE;
+
+  private:
+    void render( QPainter*, const QRect& ) const;
+
+    const Mode m_mode;
+    union
+    {
+        QSvgRenderer* m_renderer;
+        QwtGraphic* m_graphic;
+    };
+};