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# renderarea.h Example File
painting/basicdrawing/renderarea.h

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        #ifndef RENDERAREA_H
        #define RENDERAREA_H

        #include <QBrush>
        #include <QPen>
        #include <QPixmap>
        #include <QWidget>

        class RenderArea : public QWidget
        {
            Q_OBJECT

        public:
            enum Shape { Line, Points, Polyline, Polygon, Rect, RoundRect, Ellipse, Arc,
                         Chord, Pie, Path, Text, Pixmap };

            RenderArea(QWidget *parent = 0);

            QSize minimumSizeHint() const;
            QSize sizeHint() const;

        public slots:
            void setShape(Shape shape);
            void setPen(const QPen &pen);
            void setBrush(const QBrush &brush);
            void setAntialiased(bool antialiased);
            void setTransformed(bool transformed);

        protected:
            void paintEvent(QPaintEvent *event);

        private:
            Shape shape;
            QPen pen;
            QBrush brush;
            bool antialiased;
            bool transformed;
            QPixmap pixmap;
        };

        #endif