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

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        ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
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        ** License version 2.0 as published by the Free Software Foundation
        ** and appearing in the file LICENSE.GPL included in the packaging of
        ** this file.  Please review the following information to ensure GNU
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        #ifndef RENDERAREA_H
        #define RENDERAREA_H

        #include <QFont>
        #include <QList>
        #include <QPainterPath>
        #include <QRect>
        #include <QWidget>

        class QPaintEvent;

        enum Operation { NoTransformation, Translate, Rotate, Scale };

        class RenderArea : public QWidget
        {
            Q_OBJECT

        public:
            RenderArea(QWidget *parent = 0);

            void setOperations(const QList<Operation> &operations);
            void setShape(const QPainterPath &shape);

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

        protected:
            void paintEvent(QPaintEvent *event);

        private:
            void drawCoordinates(QPainter &painter);
            void drawOutline(QPainter &painter);
            void drawShape(QPainter &painter);
            void transformPainter(QPainter &painter);

            QList<Operation> operations;
            QPainterPath shape;
            QRect xBoundingRect;
            QRect yBoundingRect;
        };

        #endif