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/****************************************************************************
** $Id$
**
** Definition of the QWidgetResizeHandler class
**
** Created : 001010
**
** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
**
** This file is part of the workspace module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition licenses may use this
** file in accordance with the Qt Commercial License Agreement provided
** with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QWIDGETRESIZEHANDLER_H
#define QWIDGETRESIZEHANDLER_H
#ifndef QT_H
#include "qobject.h"
#endif // QT_H
#ifndef QT_NO_RESIZEHANDLER
class QMouseEvent;
class QKeyEvent;
class Q_EXPORT QWidgetResizeHandler : public QObject
{
Q_OBJECT
public:
QWidgetResizeHandler( QWidget *parent, QWidget *cw = 0, const char *name = 0 );
void setActive( bool b ) { active = b; if ( !active ) setMouseCursor( Nowhere ); }
bool isActive() const { return active; }
void setMovingEnabled( bool b ) { moving = b; }
bool isMovingEnabled() const { return moving; }
bool isButtonDown() const { return buttonDown; }
void setExtraHeight( int h ) { extrahei = h; }
void setSizeProtection( bool b ) { sizeprotect = b; }
void doResize();
void doMove();
signals:
void activate();
protected:
bool eventFilter( QObject *o, QEvent *e );
void mouseMoveEvent( QMouseEvent *e );
void keyPressEvent( QKeyEvent *e );
private:
enum MousePosition {
Nowhere,
TopLeft, BottomRight, BottomLeft, TopRight,
Top, Bottom, Left, Right,
Center
};
QWidget *widget;
QWidget *childWidget;
QPoint moveOffset;
QPoint invertedMoveOffset;
MousePosition mode;
int extrahei;
int range;
uint buttonDown :1;
uint moveResizeMode :1;
uint active :1;
uint sizeprotect :1;
uint moving :1;
void setMouseCursor( MousePosition m );
bool isMove() const {
return moveResizeMode && mode == Center;
}
bool isResize() const {
return moveResizeMode && !isMove();
}
private: // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
QWidgetResizeHandler( const QWidgetResizeHandler & );
QWidgetResizeHandler& operator=( const QWidgetResizeHandler & );
#endif
};
#endif //QT_NO_RESIZEHANDLER
#endif
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