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106 lines
3 KiB
C++
106 lines
3 KiB
C++
/** ===========================================================
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* @file
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*
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* This file is a part of digiKam project
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* <a href="http://www.digikam.org">http://www.digikam.org</a>
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*
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* @date 2009-11-14
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* @brief Embedded preview loading
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*
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* @author Copyright (C) 2009-2014 by Gilles Caulier
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* <a href="mailto:caulier dot gilles at gmail dot com">caulier dot gilles at gmail dot com</a>
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* @author Copyright (C) 2009-2012 by Marcel Wiesweg
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* <a href="mailto:marcel dot wiesweg at gmx dot de">marcel dot wiesweg at gmx dot de</a>
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*
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* This program is free software; you can redistribute it
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* and/or modify it under the terms of the GNU General
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* Public License as published by the Free Software Foundation;
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* either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* ============================================================ */
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#ifndef KEXIV2PREVIEWS
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#define KEXIV2PREVIEWS
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// Qt includes
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#include <QtCore/QByteArray>
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#include <QtCore/QSize>
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#include <QtCore/QString>
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// Local includes
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#include "libkexiv2_export.h"
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class QImage;
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namespace KExiv2Iface
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{
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class KEXIV2_EXPORT KExiv2Previews
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{
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public:
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/**
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* Open the given file and scan for embedded preview images
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*/
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KExiv2Previews(const QString& filePath);
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/**
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* Open the given image data and scan the image for embedded preview images.
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*/
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KExiv2Previews(const QByteArray& imgData);
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~KExiv2Previews();
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/// Returns the pixel size of the original image, as read from the file (not the metadata).
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QSize originalSize() const;
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/// Returns the mimeType of the original image, detected from the file's content.
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QString originalMimeType() const;
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/// Returns if there are any preview images available
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bool isEmpty();
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/// Returns how many embedded previews are available
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int count();
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inline int size() { return count(); }
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/**
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* For each contained preview image, return the size
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* of the image data in bytes, width and height of the preview,
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* the mimeType and the file extension.
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* Ensure that index < count().
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* Previews are sorted by width*height, largest first.
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*/
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int dataSize(int index = 0);
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int width(int index = 0);
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int height(int index = 0);
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QString mimeType(int index = 0);
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QString fileExtension(int index = 0);
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/**
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* Retrieve the image data for the specified embedded preview image
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*/
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QByteArray data(int index = 0);
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/**
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* Loads the data of the specified preview and creates a QImage
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* from this data. Returns a null QImage if the loading failed.
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*/
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QImage image(int index = 0);
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private:
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class Private;
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Private* const d;
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};
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} // namespace KExiv2Iface
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#endif // KEXIV2PREVIEWS
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