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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