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** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of the QtWidgets module of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU
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****************************************************************************/

#ifndef QTOOLBUTTON_H
#define QTOOLBUTTON_H

#include <QtWidgets/qtwidgetsglobal.h>

#include <QtWidgets/qabstractbutton.h>

QT_REQUIRE_CONFIG(toolbutton);

QT_BEGIN_NAMESPACE

class QToolButtonPrivate;
class QMenu;
class QStyleOptionToolButton;

class Q_WIDGETS_EXPORT QToolButton : public QAbstractButton
{
    Q_OBJECT
    Q_ENUMS(Qt::ToolButtonStyle Qt::ArrowType)
#if QT_CONFIG(menu)
    Q_PROPERTY(ToolButtonPopupMode popupMode READ popupMode WRITE setPopupMode)
#endif
    Q_PROPERTY(Qt::ToolButtonStyle toolButtonStyle READ toolButtonStyle WRITE setToolButtonStyle)
    Q_PROPERTY(bool autoRaise READ autoRaise WRITE setAutoRaise)
    Q_PROPERTY(Qt::ArrowType arrowType READ arrowType WRITE setArrowType)

public:
    enum ToolButtonPopupMode {
        DelayedPopup,
        MenuButtonPopup,
        InstantPopup
    };
    Q_ENUM(ToolButtonPopupMode)

    explicit QToolButton(QWidget *parent = nullptr);
    ~QToolButton();

    QSize sizeHint() const override;
    QSize minimumSizeHint() const override;

    Qt::ToolButtonStyle toolButtonStyle() const;

    Qt::ArrowType arrowType() const;
    void setArrowType(Qt::ArrowType type);

#if QT_CONFIG(menu)
    void setMenu(QMenu* menu);
    QMenu* menu() const;

    void setPopupMode(ToolButtonPopupMode mode);
    ToolButtonPopupMode popupMode() const;
#endif

    QAction *defaultAction() const;

    void setAutoRaise(bool enable);
    bool autoRaise() const;

public Q_SLOTS:
#if QT_CONFIG(menu)
    void showMenu();
#endif
    void setToolButtonStyle(Qt::ToolButtonStyle style);
    void setDefaultAction(QAction *);

Q_SIGNALS:
    void triggered(QAction *);

protected:
    bool event(QEvent *e) override;
    void mousePressEvent(QMouseEvent *) override;
    void mouseReleaseEvent(QMouseEvent *) override;
    void paintEvent(QPaintEvent *) override;
    void actionEvent(QActionEvent *) override;

    void enterEvent(QEnterEvent *) override;
    void leaveEvent(QEvent *) override;
    void timerEvent(QTimerEvent *) override;
    void changeEvent(QEvent *) override;

    bool hitButton(const QPoint &pos) const override;
    void nextCheckState() override;
    virtual void initStyleOption(QStyleOptionToolButton *option) const;

private:
    Q_DISABLE_COPY(QToolButton)
    Q_DECLARE_PRIVATE(QToolButton)
#if QT_CONFIG(menu)
    Q_PRIVATE_SLOT(d_func(), void _q_buttonPressed())
    Q_PRIVATE_SLOT(d_func(), void _q_buttonReleased())
    Q_PRIVATE_SLOT(d_func(), void _q_updateButtonDown())
    Q_PRIVATE_SLOT(d_func(), void _q_menuTriggered(QAction*))
#endif
    Q_PRIVATE_SLOT(d_func(), void _q_actionTriggered())

};

QT_END_NAMESPACE

#endif // QTOOLBUTTON_H
