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/* ============================================================
*
* This file is a part of digiKam project
* http://www.digikam.org
*
* Date : 2006-01-16
* Description : image file IO threaded interface.
*
* Copyright (C) 2006-2007 by Marcel Wiesweg <marcel.wiesweg@gmx.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 LOADING_DESCRIPTION_H
#define LOADING_DESCRIPTION_H
// Digikam includes.
#include "dimg.h"
#include "digikam_export.h"
namespace Digikam
{
class DIGIKAM_EXPORT LoadingDescription
{
public:
class PreviewParameters
{
public:
PreviewParameters()
{
isPreview = false;
size = 0;
exifRotate = false;
}
bool isPreview;
int size;
bool exifRotate;
bool operator==(const PreviewParameters &other) const;
};
/**
* An invalid LoadingDescription
*/
LoadingDescription()
{
}
/**
* Use this for files that are not raw files.
* Stores only the filePath.
*/
LoadingDescription(const TQString &filePath);
/**
* For raw files:
* Stores filePath and RawDecodingSettings
*/
LoadingDescription(const TQString &filePath, DRawDecoding settings);
/**
* For preview jobs:
* Stores preview max size and exif rotation.
* Exif Rotation:
* The exif rotation is only a hint.
* Call LoadSaveThread::exifRotate to make sure that the image is really
* rotated. It is safe to call this method even if the image is rotated.
* Raw files:
* If size is not 0, the embedded preview will be loaded if available.
* If size is 0, DImg based loading will be used with default raw decoding settings.
*/
LoadingDescription(const TQString &filePath, int size, bool exifRotate);
TQString filePath;
DRawDecoding rawDecodingSettings;
PreviewParameters previewParameters;
/**
* Return the cache key this description shall be stored as
*/
TQString cacheKey() const;
/**
* Return all possible cache keys, starting with the best choice,
* for which a result may be found in the cache for this description.
* Included in the list are better quality versions, if this description is reduced.
*/
TQStringList lookupCacheKeys() const;
/**
* Returns whether this description describes a loading operation which
* loads the image in a reduced version (quality, size etc.)
*/
bool isReducedVersion() const;
/**
* Returns whether the other loading task equals this one
*/
bool operator==(const LoadingDescription &other) const;
bool operator!=(const LoadingDescription &other) const
{ return !operator==(other); }
/**
* Returns whether the other loading task equals this one
* ignoring parameters used to specify a reduced version.
*/
bool equalsIgnoreReducedVersion(const LoadingDescription &other) const;
/**
* Returns whether this loading task equals the other one
* or is superior to it, if the other one is a reduced version
*/
bool equalsOrBetterThan(const LoadingDescription &other) const;
/**
* Returns all possible cacheKeys for the given file path
* (all cache keys under which the given file could be stored in the cache).
*/
static TQStringList possibleCacheKeys(const TQString &filePath);
};
} // namespace Digikam
#endif // LOADING_DESCRIPTION_H
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