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/* This file is part of the KDE libraries
SPDX-FileCopyrightText: 2000 Malte Starostik <malte@kde.org>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#ifndef _THUMBNAIL_H_
#define _THUMBNAIL_H_
#include <QHash>
#include <QPainter>
#include <QRandomGenerator>
#include <QSet>
#include <KIO/ThumbnailCreator>
#include <KIO/WorkerBase>
#include <KPluginMetaData>
class ThumbCreator;
class QImage;
struct ThumbCreatorWithMetadata {
std::unique_ptr<KIO::ThumbnailCreator> creator;
bool cacheThumbnail = true;
bool devicePixelRatioDependent = false;
bool handleSequences = false;
};
class ThumbnailProtocol : public KIO::WorkerBase
{
public:
ThumbnailProtocol(const QByteArray &pool, const QByteArray &app);
~ThumbnailProtocol() override;
KIO::WorkerResult get(const QUrl &url) override;
protected:
ThumbCreatorWithMetadata *getThumbCreator(const QString &plugin);
bool isOpaque(const QImage &image) const;
void drawPictureFrame(QPainter *painter, const QPoint &pos, const QImage &image, int frameWidth, QSize imageTargetSize, int rotationAngle) const;
QImage thumbForDirectory(const QString &directory);
KPluginMetaData pluginForMimeType(const QString &mimeType);
float sequenceIndex() const;
private:
/**
* Creates a sub thumbnail for the directory thumbnail. If a cached
* version of the sub thumbnail is available, the cached version will be used.
* If no cached version is available, the created sub thumbnail will be
* added to the cache for later use.
*/
bool createSubThumbnail(QImage &thumbnail, const QString &filePath, int segmentWidth, int segmentHeight);
/**
* Draw the SubThumbnail
**/
void drawSubThumbnail(QPainter &p, QImage subThumbnail, int width, int height, int xPos, int yPos, int borderStrokeWidth);
private:
void ensureDirsCreated();
bool createThumbnail(ThumbCreatorWithMetadata *subCreator, const QString &filePath, int width, int height, QImage &thumbnail);
QString m_mimeType;
int m_width;
int m_height;
qreal m_devicePixelRatio;
// Thumbnail creators
QHash<QString, ThumbCreatorWithMetadata *> m_creators;
QStringList m_enabledPlugins;
QSet<QString> m_propagationDirectories;
QString m_thumbBasePath;
KIO::filesize_t m_maxFileSize;
QRandomGenerator m_randomGenerator;
float m_sequenceIndexWrapAroundPoint = -1;
};
#endif
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