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// SPDX-License-Identifier: GPL-2.0
#ifndef IMAGEDOWNLOADER_H
#define IMAGEDOWNLOADER_H
#include <QImage>
#include <QFuture>
#include <QNetworkReply>
#include <QThreadPool>
class ImageDownloader : public QObject {
Q_OBJECT
public:
ImageDownloader(const QString &filename);
void load(bool fromHash);
private:
bool loadFromUrl(const QUrl &); // return true on success
void saveImage(QNetworkReply *reply, bool &success);
QString filename;
};
class PictureEntry;
class Thumbnailer : public QObject {
Q_OBJECT
public:
static Thumbnailer *instance();
// Schedule a thumbnail for fetching or calculation.
// Returns a placehlder thumbnail. The actual thumbnail will be sent
// via a signal later.
QImage fetchThumbnail(PictureEntry &entry, int size);
// If we change dive, clear all unfinished thumbnail creations
void clearWorkQueue();
signals:
void thumbnailChanged(QString filename, QImage thumbnail);
private:
Thumbnailer();
void processItem(QString filename, int size);
mutable QMutex lock;
QThreadPool pool;
QMap<QString,QFuture<void>> workingOn;
};
QImage getHashedImage(const QString &filename);
#endif // IMAGEDOWNLOADER_H
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