/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
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**
** This file is part of the QtWidgets module of the Qt Toolkit.
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** $QT_BEGIN_LICENSE:LGPL21$
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** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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****************************************************************************/

#ifndef QCHECKBOX_H
#define QCHECKBOX_H

#include <QtWidgets/qabstractbutton.h>

QT_BEGIN_NAMESPACE


class QCheckBoxPrivate;
class QStyleOptionButton;

class Q_WIDGETS_EXPORT QCheckBox : public QAbstractButton
{
    Q_OBJECT

    Q_PROPERTY(bool tristate READ isTristate WRITE setTristate)

public:
    explicit QCheckBox(QWidget *parent = Q_NULLPTR);
    explicit QCheckBox(const QString &text, QWidget *parent = Q_NULLPTR);
    ~QCheckBox();

    QSize sizeHint() const Q_DECL_OVERRIDE;
    QSize minimumSizeHint() const Q_DECL_OVERRIDE;

    void setTristate(bool y = true);
    bool isTristate() const;

    Qt::CheckState checkState() const;
    void setCheckState(Qt::CheckState state);

Q_SIGNALS:
    void stateChanged(int);

protected:
    bool event(QEvent *e) Q_DECL_OVERRIDE;
    bool hitButton(const QPoint &pos) const Q_DECL_OVERRIDE;
    void checkStateSet() Q_DECL_OVERRIDE;
    void nextCheckState() Q_DECL_OVERRIDE;
    void paintEvent(QPaintEvent *) Q_DECL_OVERRIDE;
    void mouseMoveEvent(QMouseEvent *) Q_DECL_OVERRIDE;
    void initStyleOption(QStyleOptionButton *option) const;


private:
    Q_DECLARE_PRIVATE(QCheckBox)
    Q_DISABLE_COPY(QCheckBox)
    friend class QAccessibleButton;
};

QT_END_NAMESPACE

#endif // QCHECKBOX_H
