importdelegate.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2012-07-08
 * Description : Qt item view to import items - the delegate
 *
 * Copyright (C) 2012      by Islam Wazery <wazery at ubuntu dot com>
 * Copyright (C) 2012-2022 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_IMPORT_DELEGATE_H
#define DIGIKAM_IMPORT_DELEGATE_H
 
#include <QtGlobal>
#include <QListView>
 
// Local includes
 
#include "itemviewimportdelegate.h"
#include "importthumbnailmodel.h"
#include "importcategorydrawer.h"
 
namespace Digikam
{
 
class ImportCategorizedView;
class ImportThumbnailDelegatePrivate;
class ImportNormalDelegatePrivate;
 
class ImportDelegate : public ItemViewImportDelegate
{
    Q_OBJECT
 
public:
 
    explicit ImportDelegate(QObject* const parent = nullptr);
    ~ImportDelegate() override;
 
    void setView(ImportCategorizedView* view);
 
    ImportCategoryDrawer* categoryDrawer()           const;
 
/*
    QRect commentsRect()                             const;
*/
    QRect tagsRect()                                 const;
    QRect actualPixmapRect(const QModelIndex& index) const;
    QRect groupIndicatorRect()                       const;
    QRect downloadIndicatorRect()                    const;
    QRect lockIndicatorRect()                        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:
 
    // Declared as public because of use in ImportNormalDelegate class.
    class ImportDelegatePrivate;
 
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);
 
    ImportDelegate(ImportDelegate::ImportDelegatePrivate& 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(ImportDelegate)
};
 
// ------ ImportThumbnailDelegate ----------------------------------------
 
class ImportThumbnailDelegate : public ImportDelegate
{
    Q_OBJECT
 
public:
 
    explicit ImportThumbnailDelegate(ImportCategorizedView* const parent);
    ~ImportThumbnailDelegate() 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:
 
    Q_DECLARE_PRIVATE(ImportThumbnailDelegate)
};
 
// ------ ImportNormalDelegate ----------------------------------------
 
class ImportNormalDelegate : public ImportDelegate
{
    Q_OBJECT
 
public:
 
    explicit ImportNormalDelegate(ImportCategorizedView* const parent);
    ~ImportNormalDelegate() override;
 
protected:
 
    ImportNormalDelegate(ImportNormalDelegatePrivate& dd, ImportCategorizedView* const parent);
 
    void updateRects() override;
 
private:
 
    Q_DECLARE_PRIVATE(ImportNormalDelegate)
};
 
} // namespace Digikam
 
#endif // DIGIKAM_IMPORT_DELEGATE_H