itemviewhoverbutton.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2009-04-30
 * Description : Qt item view mouse hover button
 *
 * Copyright (C) 2009-2011 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * This program 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 General Public License for more details.
 *
 * ============================================================ */
 
#ifndef DIGIKAM_ITEM_VIEW_HOVER_BUTTON_H
#define DIGIKAM_ITEM_VIEW_HOVER_BUTTON_H
 
// Qt includes
 
#include <QAbstractButton>
#include <QAbstractItemView>
 
// Local includes
 
#include "digikam_export.h"
 
class QTimeLine;
 
namespace Digikam
{
 
class DIGIKAM_EXPORT ItemViewHoverButton : public QAbstractButton
{
    Q_OBJECT
 
public:
 
    explicit ItemViewHoverButton(QAbstractItemView* const parentView);
 
    void initIcon();
    void reset();
    void setIndex(const QModelIndex& index);
    QModelIndex index() const;
    void setVisible(bool visible) override;
 
    QSize sizeHint() const override = 0;
 
protected:
 
    void setup();
 
#if (QT_VERSION > QT_VERSION_CHECK(5, 99, 0))
    void enterEvent(QEnterEvent* event);
#else
    void enterEvent(QEvent* event);
#endif
 
    void leaveEvent(QEvent* event);
    void paintEvent(QPaintEvent* event);
 
    virtual QIcon icon() = 0;
 
    virtual void updateToolTip();
 
protected Q_SLOTS:
 
    void setFadingValue(int value);
    void refreshIcon();
    void startFading();
    void stopFading();
 
protected:
 
    QPersistentModelIndex m_index;
    bool                  m_isHovered;
    int                   m_fadingValue;
    QIcon                 m_icon;
    QTimeLine*            m_fadingTimeLine;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_ITEM_VIEW_HOVER_BUTTON_H