showfotodelegate.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2013-08-01
 * Description : Qt model view for Showfoto item - the delegate
 *
 * Copyright (C) 2013      by Mohamed_Anwer <m_dot_anwer at gmx dot com>
 * Copyright (C) 2013-2022 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 SHOW_FOTO_DELEGATE_H
#define SHOW_FOTO_DELEGATE_H
 
// Qt includes
 
#include <QListView>
 
// Local includes
 
#include "showfotoitemviewdelegate.h"
#include "showfotothumbnailmodel.h"
 
namespace ShowFoto
{
 
class ShowfotoThumbnailBar;
class ShowfotoThumbnailDelegatePrivate;
class ShowfotoNormalDelegatePrivate;
class ShowfotoFilterModel;
 
class ShowfotoDelegate : public ShowfotoItemViewDelegate
{
    Q_OBJECT
 
public:
 
    explicit ShowfotoDelegate(QObject* const parent = nullptr);
    ~ShowfotoDelegate()                                                                                override;
 
    void setView(ShowfotoThumbnailBar* view);
 
    QRect actualPixmapRect(const QModelIndex& index)                                             const;
    QRect groupIndicatorRect()                                                                   const;
    QRect coordinatesIndicatorRect()                                                             const;
 
    int calculatethumbSizeToFit(int ws);
 
    void setSpacing(int spacing)                                                                       override;
    void setDefaultViewOptions(const QStyleOptionViewItem& option)                                     override;
    bool acceptsToolTip(const QPoint& pos, const QRect& visualRect,
                        const QModelIndex& index, QRect* tooltipRect = nullptr)                  const override;
    bool acceptsActivation(const QPoint& pos, const QRect& visualRect,
                           const QModelIndex& index, QRect* activationRect = nullptr)            const override;
 
    QRect pixmapRect()                                                                           const override;
    QRect imageInformationRect()                                                                 const override;
 
    void paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index)  const override;
    QPixmap pixmapForDrag(const QStyleOptionViewItem& option, const QList<QModelIndex>& indexes) const override;
 
    static QPixmap retrieveThumbnailPixmap(const QModelIndex& index, int thumbnailSize);
 
public:
 
    class ShowfotoDelegatePrivate;
 
protected:
 
    bool onActualPixmapRect(const QPoint& pos, const QRect& visualRect,
                            const QModelIndex& index, QRect* actualRect)                         const;
    void updateActualPixmapRect(const QModelIndex& index, const QRect& rect);
 
    void setModel(QAbstractItemModel* model);
 
    ShowfotoDelegate(ShowfotoDelegate::ShowfotoDelegatePrivate& dd, QObject* const parent);
 
    virtual void updateContentWidth();
 
    virtual void updateRects() = 0;
 
    void clearCaches()                                                                                 override;
 
    virtual void clearModelDataCaches();
 
    virtual QPixmap thumbnailPixmap(const QModelIndex& index)                                    const;
 
    void invalidatePaintingCache()                                                                     override;
    void updateSizeRectsAndPixmaps()                                                                   override;
 
protected Q_SLOTS:
 
    void modelChanged();
    void modelContentsChanged();
 
private:
 
    Q_DECLARE_PRIVATE(ShowfotoDelegate)
};
 
// -------------- ShowfotoThumbnailDelegate ---------------------
 
class ShowfotoThumbnailDelegate : public ShowfotoDelegate
{
    Q_OBJECT
 
public:
 
    explicit ShowfotoThumbnailDelegate(ShowfotoThumbnailBar* const parent);
    ~ShowfotoThumbnailDelegate()                                   override;
 
    void setFlow(QListView::Flow flow);
 
    int maximumSize()                                        const;
    int minimumSize()                                        const;
 
    void setDefaultViewOptions(const QStyleOptionViewItem& option) override;
    bool acceptsActivation(const QPoint& pos,
                           const QRect& visualRect,
                           const QModelIndex& index,
                           QRect* activationRect)            const override;
 
protected:
 
    void updateContentWidth()                                      override;
    void updateRects()                                             override;
    int thumbnailPixmapSize(bool withHighlight, int size);
 
private:
 
    // Disable
    explicit ShowfotoThumbnailDelegate(QObject*) = delete;
 
private:
 
    Q_DECLARE_PRIVATE(ShowfotoThumbnailDelegate)
};
 
// ------------------- ShowfotoNormalDelegate ------------------
 
class ShowfotoNormalDelegate : public ShowfotoDelegate
{
    Q_OBJECT
 
public:
 
    explicit ShowfotoNormalDelegate(ShowfotoThumbnailBar* const bar,
                                    QObject* const parent = nullptr);
    ~ShowfotoNormalDelegate()   override;
 
protected:
 
    ShowfotoNormalDelegate(ShowfotoNormalDelegatePrivate& dd,
                           ShowfotoThumbnailBar* const bar,
                           QObject* const parent = nullptr);
 
    void updateRects()          override;
 
private:
 
    Q_DECLARE_PRIVATE(ShowfotoNormalDelegate)
};
 
} // namespace ShowFoto
 
#endif // SHOW_FOTO_DELEGATE_H