dimgitems_p.h

Go to the documentation of this file.

/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2010-04-30
 * Description : Graphics View item for DImg - Private containers
 *
 * Copyright (C) 2010-2012 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 *
 * 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_DIMG_ITEMS_P_H
#define DIGIKAM_DIMG_ITEMS_P_H
 
// Qt includes
 
#include <QPixmapCache>
#include <QQueue>
#include <QString>
 
// Local includes
 
#include "digikam_export.h"
#include "dimg.h"
#include "dimgpreviewitem.h"
#include "imagezoomsettings.h"
#include "previewsettings.h"
 
namespace Digikam
{
 
class CachedPixmapKey
{
public:
 
    QRect             region;
    QPixmapCache::Key key;
};
 
// -------------------------------------------------------------------------------
 
class CachedPixmaps
{
public:
 
    explicit CachedPixmaps(int maxCount = 2);
    ~CachedPixmaps();
 
    void setMaxCount(int);
    void clear();
    bool find(const QRect& region, QPixmap* const pix, QRect* const source);
    void insert(const QRect& region, const QPixmap& pixmap);
 
protected:
 
    int                     maxCount;
    QQueue<CachedPixmapKey> keys;
};
 
// -------------------------------------------------------------------------------
 
class DIGIKAM_EXPORT GraphicsDImgItem::GraphicsDImgItemPrivate
{
public:
 
    explicit GraphicsDImgItemPrivate()
    {
    }
 
    void init(GraphicsDImgItem* const q);
 
public:
 
    DImg                  image;
    ImageZoomSettings     zoomSettings;
    mutable CachedPixmaps cachedPixmaps;
};
 
// -------------------------------------------------------------------------------
 
class PreviewLoadThread;
class DImgPreviewItem;
 
class DIGIKAM_EXPORT DImgPreviewItem::DImgPreviewItemPrivate : public GraphicsDImgItem::GraphicsDImgItemPrivate
{
public:
 
    explicit DImgPreviewItemPrivate();
    void init(DImgPreviewItem* const q);
 
public:
 
    DImgPreviewItem::State state;
    bool                   exifRotate;
    int                    previewSize;
 
    QString                path;
    PreviewSettings        previewSettings;
    PreviewLoadThread*     previewThread;
    PreviewLoadThread*     preloadThread;
    QStringList            pathsToPreload;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_DIMG_ITEMS_P_H