libs/flake

KoPathToolHandle.h

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00001 /* This file is part of the KDE project
00002  * Copyright (C) 2006,2008 Jan Hambrecht <jaham@gmx.net>
00003  * Copyright (C) 2006,2007 Thorsten Zachmann <zachmann@kde.org>
00004  * Copyright (C) 2007 Thomas Zander <zander@kde.org>
00005  * Copyright (C) 2007 Boudewijn Rempt <boud@valdyas.org>
00006  *
00007  * This library is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Library General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2 of the License, or (at your option) any later version.
00011  *
00012  * This library is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Library General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Library General Public License
00018  * along with this library; see the file COPYING.LIB.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef KOPATHTOOLHANDLE_H
00024 #define KOPATHTOOLHANDLE_H
00025 
00026 #include <KoPathPoint.h>
00027 #include "KoInteractionStrategy.h"
00028 
00029 class KoPathTool;
00030 class KoParameterShape;
00031 class KoViewConverter;
00032 class KoPointerEvent;
00033 class QPainter;
00034 
00035 class KoPathToolHandle
00036 {
00037 public:
00038     KoPathToolHandle(KoPathTool *tool);
00039     virtual ~KoPathToolHandle();
00040     virtual void paint(QPainter &painter, const KoViewConverter &converter) = 0;
00041     virtual void repaint() const = 0;
00042     virtual KoInteractionStrategy * handleMousePress(KoPointerEvent *event) = 0;
00043     // test if handle is still valid
00044     virtual bool check() = 0;
00045 
00046 protected:
00047     KoPathTool *m_tool;
00048 };
00049 
00050 class PointHandle : public KoPathToolHandle
00051 {
00052 public:
00053     PointHandle(KoPathTool *tool, KoPathPoint *activePoint, KoPathPoint::KoPointType activePointType);
00054     void paint(QPainter &painter, const KoViewConverter &converter);
00055     void repaint() const;
00056     KoInteractionStrategy * handleMousePress(KoPointerEvent *event);
00057     bool check();
00058     KoPathPoint * activePoint() const;
00059     KoPathPoint::KoPointType activePointType() const;
00060 private:
00061     KoPathPoint *m_activePoint;
00062     KoPathPoint::KoPointType m_activePointType;
00063 };
00064 
00065 class ParameterHandle : public KoPathToolHandle
00066 {
00067 public:
00068     ParameterHandle(KoPathTool *tool, KoParameterShape *parameterShape, int handleId);
00069     void paint(QPainter &painter, const KoViewConverter &converter);
00070     void repaint() const;
00071     KoInteractionStrategy * handleMousePress(KoPointerEvent *event);
00072     bool check();
00073 protected:
00074     KoParameterShape *m_parameterShape;
00075     int m_handleId;
00076 };
00077 
00078 class ConnectionHandle : public ParameterHandle
00079 {
00080 public:
00081     ConnectionHandle(KoPathTool *tool, KoParameterShape *parameterShape, int handleId);
00082 
00083     // XXX: Later: create a paint even to distinguish a connection
00084     // handle  from another handle type
00085     KoInteractionStrategy * handleMousePress(KoPointerEvent *event);
00086 };
00087 
00088 #endif // KOPATHTOOLHANDLE_H