Qt Reference Documentation

interfaces.h Example File

tools/plugandpaint/interfaces.h
 /****************************************************************************
 **
 ** Copyright (C) 2015 The Qt Company Ltd.
 ** Contact: http://www.qt.io/licensing/
 **
 ** 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 The Qt Company Ltd 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