Released version 6.1.3

playground/graphicscale/canvas.cpp

@@ -0,0 +1,72 @@
+#include "canvas.h"
+#include <qwt_graphic.h>
+#include <qsvgrenderer.h>
+
+Canvas::Canvas( Mode mode, QWidget *parent ):
+    QWidget( parent ),
+    d_mode( mode )
+{
+    const int m = 10;
+    setContentsMargins( m, m, m, m );
+
+    if ( d_mode == Svg )
+        d_renderer = new QSvgRenderer( this );
+    else
+        d_graphic = new QwtGraphic();
+}
+
+Canvas::~Canvas()
+{
+    if ( d_mode == VectorGraphic )
+        delete d_graphic;
+}
+
+void Canvas::setSvg( const QByteArray &data )
+{
+    if ( d_mode == VectorGraphic )
+    {
+        d_graphic->reset();
+
+        QSvgRenderer renderer;
+        renderer.load( data );
+
+        QPainter p( d_graphic );
+        renderer.render( &p, renderer.viewBoxF() );
+        p.end();
+    }
+    else
+    {
+        d_renderer->load( data );
+    }
+
+    update();
+}
+
+void Canvas::paintEvent( QPaintEvent * )
+{
+    QPainter painter( this );
+
+    painter.save();
+
+    painter.setPen( Qt::black );
+    painter.setBrush( Qt::white );
+    painter.drawRect( contentsRect().adjusted( 0, 0, -1, -1 ) );
+
+    painter.restore();
+
+    painter.setPen( Qt::NoPen );
+    painter.setBrush( Qt::NoBrush );
+    render( &painter, contentsRect() );
+}
+
+void Canvas::render( QPainter *painter, const QRect &rect ) const
+{
+    if ( d_mode == Svg )
+    {
+        d_renderer->render( painter, rect );
+    }
+    else
+    {
+        d_graphic->render( painter, rect );
+    }
+}