Qt Reference Documentation

# interfaces.h Example File

tools/plugandpaint/interfaces.h

     /****************************************************************************
     **
     ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
     **     the names of its contributors may be used to endorse or promote
     **     products derived from this software without specific prior written
     **     permission.
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #ifndef INTERFACES_H
     #define INTERFACES_H

     #include <QtPlugin>

     class QImage;
     class QPainter;
     class QWidget;
     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