groupindicatoroverlay.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2011-02-28
 * Description : overlay for extra functionality of the group indicator
 *
 * Copyright (C) 2011      by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 * Copyright (C) 2009-2022 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * 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_GROUP_INDICATOR_OVERLAY_H
#define DIGIKAM_GROUP_INDICATOR_OVERLAY_H
 
// Qt includes
 
#include <QAbstractButton>
#include <QAbstractItemView>
 
// Local includes
 
#include "itemdelegateoverlay.h"
#include "itemviewdelegate.h"
 
namespace Digikam
{
 
class GroupIndicatorOverlayWidget : public QAbstractButton
{
    Q_OBJECT
 
public:
 
    explicit GroupIndicatorOverlayWidget(QWidget* const parent = nullptr);
    void contextMenuEvent(QContextMenuEvent* event) override;
 
protected:
 
    void paintEvent(QPaintEvent*)                   override;
 
Q_SIGNALS:
 
    void contextMenu(QContextMenuEvent* event);
};
 
// ----------------------------------------------------------------------------------
 
class GroupIndicatorOverlay : public AbstractWidgetDelegateOverlay
{
    Q_OBJECT
    REQUIRE_DELEGATE(ItemViewDelegate)
 
public:
 
    explicit GroupIndicatorOverlay(QObject* const parent);
 
    GroupIndicatorOverlayWidget* buttonWidget() const;
 
Q_SIGNALS:
 
    void toggleGroupOpen(const QModelIndex& index);
    void showButtonContextMenu(const QModelIndex& index, QContextMenuEvent* event);
 
protected Q_SLOTS:
 
    void slotButtonClicked();
    void slotButtonContextMenu(QContextMenuEvent* event);
 
protected:
 
    void updatePosition();
    void updateRating();
 
    QWidget* createWidget() override;
    void setActive(bool) override;
    void visualChange() override;
    void slotEntered(const QModelIndex& index) override;
    bool checkIndex(const QModelIndex& index) const override;
 
protected:
 
    QPersistentModelIndex m_index;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_GROUP_INDICATOR_OVERLAY_H