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# interfaces.h Example File
tools/plugandpaint/interfaces.h

        /****************************************************************************
        **
        ** Copyright (C) 2005-2006 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be used under the terms of the GNU General Public
        ** 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
        ** General Public Licensing requirements will be met:
        ** http://www.trolltech.com/products/qt/opensource.html
        **
        ** If you are unsure which license is appropriate for your use, please
        ** review the following information:
        ** http://www.trolltech.com/products/qt/licensing.html or contact the
        ** sales department at sales@trolltech.com.
        **
        ** 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 INTERFACES_H
        #define INTERFACES_H

        class QImage;
        class QPainter;
        class QPainterPath;
        class QPoint;
        class QRect;
        class QString;
        class QStringList;

        class BrushInterface
        {
        public:
            virtual ~BrushInterface() {}

            virtual QStringList brushes() const = 0;
            virtual QRect mousePress(const QString &brush, QPainter &painter,
                                     const QPoint &pos) = 0;
            virtual QRect mouseMove(const QString &brush, QPainter &painter,
                                    const QPoint &oldPos, const QPoint &newPos) = 0;
            virtual QRect mouseRelease(const QString &brush, QPainter &painter,
                                       const QPoint &pos) = 0;
        };

        class ShapeInterface
        {
        public:
            virtual ~ShapeInterface() {}

            virtual QStringList shapes() const = 0;
            virtual QPainterPath generateShape(const QString &shape,
                                               QWidget *parent) = 0;
        };

        class FilterInterface
        {
        public:
            virtual ~FilterInterface() {}

            virtual QStringList filters() const = 0;
            virtual QImage filterImage(const QString &filter, const QImage &image,
                                       QWidget *parent) = 0;
        };

        Q_DECLARE_INTERFACE(BrushInterface,
                            "com.trolltech.PlugAndPaint.BrushInterface/1.0")
        Q_DECLARE_INTERFACE(ShapeInterface,
                            "com.trolltech.PlugAndPaint.ShapeInterface/1.0")
        Q_DECLARE_INTERFACE(FilterInterface,
                            "com.trolltech.PlugAndPaint.FilterInterface/1.0")

        #endif