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/* This file is part of the KDE project
* Copyright (C) 2007 Thomas Zander <zander@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef KOASPECTBUTTON_H
#define KOASPECTBUTTON_H
#include <QAbstractButton>
#include "kowidgets_export.h"
/**
* This button gives a visual indication of weather the 'aspect ratio' is locked.
* Typically you would use this alongside 2 spinboxes with a value like a width and height.
*/
class KOWIDGETS_EXPORT KoAspectButton : public QAbstractButton {
Q_OBJECT
public:
/// constructor
explicit KoAspectButton(QWidget *parent);
~KoAspectButton() override;
/// Returns of keeping aspect ratio is on or off
bool keepAspectRatio() const;
public Q_SLOTS:
/**
* Set the visual indicator to be locked or not.
* This also emits the keepAspectRatioChanged if the value has changed.
* @param keep if true, lock the aspect ratio.
*/
void setKeepAspectRatio(bool keep);
Q_SIGNALS:
/**
* This signal is emitted every time the button changes value, either by user interaction or
* by programatically setting it.
*/
void keepAspectRatioChanged(bool keep);
protected:
/// reimplemented
void mouseReleaseEvent(QMouseEvent *) override;
void paintEvent (QPaintEvent *) override;
QSize sizeHint () const override;
void keyReleaseEvent (QKeyEvent *e) override;
private:
class Private;
Private * const d;
};
#endif
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