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

     /****************************************************************************
     **
     ** Copyright (C) 2005-2007 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes 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