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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QWIDGETRESIZEHANDLER_P_H
#define QWIDGETRESIZEHANDLER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. This header file may
// change from version to version without notice, or even be
// removed.
//
// We mean it.
//
#include "QtCore/qobject.h"
#include "QtCore/qpoint.h"
#ifndef QT_NO_RESIZEHANDLER
QT_BEGIN_NAMESPACE
class QMouseEvent;
class QKeyEvent;
class Q_GUI_EXPORT QWidgetResizeHandler : public QObject
{
Q_OBJECT
public:
enum Action {
Move = 0x01,
Resize = 0x02,
Any = Move|Resize
};
explicit QWidgetResizeHandler(QWidget *parent, QWidget *cw = 0);
void setActive(bool b) { setActive(Any, b); }
void setActive(Action ac, bool b);
bool isActive() const { return isActive(Any); }
bool isActive(Action ac) const;
void setMovingEnabled(bool b) { movingEnabled = b; }
bool isMovingEnabled() const { return movingEnabled; }
bool isButtonDown() const { return buttonDown; }
void setExtraHeight(int h) { extrahei = h; }
void setSizeProtection(bool b) { sizeprotect = b; }
void setFrameWidth(int w) { fw = w; }
void doResize();
void doMove();
Q_SIGNALS:
void activate();
protected:
bool eventFilter(QObject *o, QEvent *e);
void mouseMoveEvent(QMouseEvent *e);
void keyPressEvent(QKeyEvent *e);
private:
Q_DISABLE_COPY(QWidgetResizeHandler)
enum MousePosition {
Nowhere,
TopLeft, BottomRight, BottomLeft, TopRight,
Top, Bottom, Left, Right,
Center
};
QWidget *widget;
QWidget *childWidget;
QPoint moveOffset;
QPoint invertedMoveOffset;
MousePosition mode;
int fw;
int extrahei;
int range;
uint buttonDown :1;
uint moveResizeMode :1;
uint activeForResize :1;
uint sizeprotect :1;
uint movingEnabled :1;
uint activeForMove :1;
void setMouseCursor(MousePosition m);
bool isMove() const {
return moveResizeMode && mode == Center;
}
bool isResize() const {
return moveResizeMode && !isMove();
}
};
QT_END_NAMESPACE
#endif // QT_NO_RESIZEHANDLER
#endif // QWIDGETRESIZEHANDLER_P_H
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