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

        /****************************************************************************
        **
        ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
        **
        ** This file is part of the example classes of the Qt Toolkit.
        **
        ** Licensees holding valid Qt Preview licenses may use this file in
        ** accordance with the Qt Preview License Agreement provided with the
        ** Software.
        **
        ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
        ** information about Qt Commercial License Agreements.
        **
        ** Contact info@trolltech.com if any conditions of this licensing are
        ** not clear to you.
        **
        ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
        ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        **
        ****************************************************************************/

        #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