dcategorizedview.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2010-01-16
 * Description : Item view for listing items in a categorized fashion optionally
 *
 * Copyright (C) 2007      by Rafael Fernández López <ereslibre at kde dot org>
 * Copyright (C) 2009-2012 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 * Copyright (C) 2011-2022 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_DCATEGORIZED_VIEW_H
#define DIGIKAM_DCATEGORIZED_VIEW_H
 
// Qt includes
 
#include <QListView>
 
// Local includes
 
#include "digikam_export.h"
 
namespace Digikam
{
 
class DCategoryDrawer;
 
class DIGIKAM_EXPORT DCategorizedView : public QListView
{
    Q_OBJECT
 
public:
 
    explicit DCategorizedView(QWidget* const parent = nullptr);
    ~DCategorizedView() override;
 
    void setGridSize(const QSize& size);
 
    void setCategoryDrawer(DCategoryDrawer* categoryDrawer);
    DCategoryDrawer* categoryDrawer()                                                   const;
 
    void setDrawDraggedItems(bool drawDraggedItems);
 
    void        setModel(QAbstractItemModel* model)                                    override;
    QRect       visualRect(const QModelIndex& index)                            const  override;
    QModelIndex indexAt(const QPoint& point)                                    const  override;
 
    virtual QModelIndexList categorizedIndexesIn(const QRect& rect)                     const;
 
    virtual QRect categoryVisualRect(const QModelIndex& index)                          const;
 
    virtual QModelIndex categoryAt(const QPoint& point)                                 const;
 
    virtual QItemSelectionRange categoryRange(const QModelIndex& index)                 const;
 
public Q_SLOTS:
 
    void reset()                                                                       override;
 
protected:
 
    void paintEvent(QPaintEvent* event)                                                override;
 
    void resizeEvent(QResizeEvent* event)                                              override;
 
    void setSelection(const QRect& rect, QItemSelectionModel::SelectionFlags flags)    override;
 
    void mouseMoveEvent(QMouseEvent* event)                                            override;
 
    void mousePressEvent(QMouseEvent* event)                                           override;
 
    void mouseReleaseEvent(QMouseEvent* event)                                         override;
 
    void leaveEvent(QEvent* event)                                                     override;
 
    void startDrag(Qt::DropActions supportedActions)                                   override;
 
    void dragMoveEvent(QDragMoveEvent* event)                                          override;
 
    void dragLeaveEvent(QDragLeaveEvent* event)                                        override;
 
    void dropEvent(QDropEvent* event)                                                  override;
 
    QModelIndex moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers) override;
 
protected Q_SLOTS:
 
    void rowsInserted(const QModelIndex& parent, int start, int end)                   override;
 
    virtual void rowsInsertedArtifficial(const QModelIndex& parent, int start, int end);
 
    virtual void rowsRemoved(const QModelIndex& parent, int start, int end);
 
    void updateGeometries()                                                            override;
 
    virtual void slotLayoutChanged();
 
    void currentChanged(const QModelIndex& current, const QModelIndex& previous)       override;
 
private:
 
    class Private;
    Private* const d;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_DCATEGORIZED_VIEW_H