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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWidgets 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.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 <QtWidgets/private/qtwidgetsglobal_p.h>
#include "QtCore/qobject.h"
#include "QtCore/qpoint.h"
QT_REQUIRE_CONFIG(resizehandler);
QT_BEGIN_NAMESPACE
class QMouseEvent;
class QKeyEvent;
class QWidgetResizeHandler : public QObject
{
Q_OBJECT
public:
explicit QWidgetResizeHandler(QWidget *parent, QWidget *cw = nullptr);
void setEnabled(bool b);
bool isEnabled() const;
bool isButtonDown() const { return buttonDown; }
void setExtraHeight(int h) { extrahei = h; }
void setFrameWidth(int w) { fw = w; }
void doResize();
Q_SIGNALS:
void activate();
protected:
bool eventFilter(QObject *o, QEvent *e) override;
void mouseMoveEvent(QMouseEvent *e);
void keyPressEvent(QKeyEvent *e);
private:
Q_DISABLE_COPY_MOVE(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 active :1;
uint enabled :1;
void setMouseCursor(MousePosition m);
bool isResizing() const {
return active && mode != Center;
}
};
QT_END_NAMESPACE
#endif // QWIDGETRESIZEHANDLER_P_H
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