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86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
/* This file is part of the KDE libraries
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Copyright (C) 2000 Malte Starostik <malte@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef _THUMBNAIL_H_
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#define _THUMBNAIL_H_
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#include <QtCore/QHash>
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#include <QImage>
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#include <kio/slavebase.h>
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class ThumbCreator;
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class ThumbnailProtocol : public KIO::SlaveBase
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{
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public:
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ThumbnailProtocol(const QByteArray &pool, const QByteArray &app);
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virtual ~ThumbnailProtocol();
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virtual void get(const KUrl &url);
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protected:
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ThumbCreator* getThumbCreator(const QString& plugin);
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const QImage getIcon();
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bool isOpaque(const QImage &image) const;
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void drawPictureFrame(QPainter *painter, const QPoint &pos, const QImage &image,
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int frameWidth, QSize imageTargetSize) const;
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QImage thumbForDirectory(const KUrl& directory);
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QString pluginForMimeType(const QString& mimeType);
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float sequenceIndex() const;
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private:
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/**
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* Creates a sub thumbnail for the directory thumbnail. If a cached
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* version of the sub thumbnail is available, the cached version will be used.
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* If no cached version is available, the created sub thumbnail will be
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* added to the cache for later use.
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*/
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bool createSubThumbnail(QImage& thumbnail, const QString& filePath,
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int segmentWidth, int segmentHeight);
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/**
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* Scales down the image \p img in a way that it fits into the
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* given maximum width and height.
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*/
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void scaleDownImage(QImage& img, int maxWidth, int maxHeight);
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/**
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* Create and draw the SubThumbnail
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**/
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bool drawSubThumbnail(QPainter& p, const QString& filePath, int width, int height,
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int xPos, int yPos, int frameWidth);
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private:
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QString m_mimeType;
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int m_width;
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int m_height;
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int m_iconSize;
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int m_iconAlpha;
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// Thumbnail creators
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QHash<QString, ThumbCreator*> m_creators;
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// transparent icon cache
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QHash<QString, QImage> m_iconDict;
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QStringList m_enabledPlugins;
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QSet<QString> m_propagationDirectories;
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QString m_thumbBasePath;
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qint64 m_maxFileSize;
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};
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#endif
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