dcategorydrawer.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2010-01-16
 * Description : drawing item view based on DCategorizedView
 *
 * 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_DCATEGORY_DRAWER_H
#define DIGIKAM_DCATEGORY_DRAWER_H
 
// Qt includes
 
#include <QObject>
#include <QMouseEvent>
 
// Local includes
 
#include "digikam_export.h"
 
class QPainter;
class QModelIndex;
class QStyleOption;
 
namespace Digikam
{
 
class DCategorizedView;
 
class DIGIKAM_EXPORT DCategoryDrawer : public QObject       // clazy:exclude=ctor-missing-parent-argument
{
    Q_OBJECT
 
    friend class DCategorizedView;
 
public:
    explicit DCategoryDrawer(DCategorizedView* const view);
    ~DCategoryDrawer()                                            override;
 
    DCategorizedView* view()                                const;
 
    virtual void drawCategory(const QModelIndex& index,
                              int sortRole,
                              const QStyleOption& option,
                              QPainter* painter)            const;
 
    virtual int categoryHeight(const QModelIndex& index,
                               const QStyleOption& option)  const;
 
    virtual int leftMargin()                                const;
 
    virtual int rightMargin()                               const;
 
Q_SIGNALS:
 
    void collapseOrExpandClicked(const QModelIndex& index);
 
    void actionRequested(int action, const QModelIndex& index);
 
protected:
 
    virtual void mouseButtonPressed(const QModelIndex& index, const QRect& blockRect, QMouseEvent* event);
 
    virtual void mouseButtonReleased(const QModelIndex& index, const QRect& blockRect, QMouseEvent* event);
 
    virtual void mouseMoved(const QModelIndex& index, const QRect& blockRect, QMouseEvent* event);
 
    virtual void mouseButtonDoubleClicked(const QModelIndex& index, const QRect& blockRect, QMouseEvent* event);
 
    virtual void mouseLeft(const QModelIndex& index, const QRect& blockRect);
 
private:
 
    class Private;
    Private* const d;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_DCATEGORY_DRAWER_H