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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#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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