blob: e0db016ed3d117a50bd446bf807ea6c577134705 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
// SPDX-License-Identifier: GPL-2.0
#ifndef IMAGEDOWNLOADER_H
#define IMAGEDOWNLOADER_H
#include "metadata.h"
#include <QImage>
#include <QFuture>
#include <QNetworkReply>
#include <QThreadPool>
class ImageDownloader : public QObject {
Q_OBJECT
public:
static ImageDownloader *instance();
ImageDownloader();
public slots:
void load(QUrl url, QString filename);
signals:
void loaded(QString filename);
void failed(QString filename);
private:
QNetworkAccessManager manager;
void loadFromUrl(const QString &filename, const QUrl &);
void saveImage(QNetworkReply *reply);
};
struct PictureEntry;
class Thumbnailer : public QObject {
Q_OBJECT
public:
static Thumbnailer *instance();
// Schedule a thumbnail for fetching or calculation.
// Returns a placeholder thumbnail. The actual thumbnail will be sent
// via a signal later.
QImage fetchThumbnail(const QString &filename);
// Schedule multiple thumbnails for forced recalculation
void calculateThumbnails(const QVector<QString> &filenames);
// If we change dive, clear all unfinished thumbnail creations
void clearWorkQueue();
static int maxThumbnailSize();
static int defaultThumbnailSize();
static int thumbnailSize(double zoomLevel);
public slots:
void imageDownloaded(QString filename);
void imageDownloadFailed(QString filename);
signals:
void thumbnailChanged(QString filename, QImage thumbnail);
private:
struct Thumbnail {
QImage img;
mediatype_t type;
};
Thumbnailer();
static void addThumbnailToCache(const Thumbnail &thumbnail, const QString &picture_filename);
void recalculate(QString filename);
void processItem(QString filename, bool tryDownload);
Thumbnail getThumbnailFromCache(const QString &picture_filename);
Thumbnail fetchImage(const QString &filename, const QString &originalFilename, bool tryDownload);
Thumbnail getHashedImage(const QString &filename, bool tryDownload);
mutable QMutex lock;
QThreadPool pool;
QImage failImage; // Shown when image-fetching fails
QImage dummyImage; // Shown before thumbnail is fetched
QImage videoImage; // Place holder for videos
QMap<QString,QFuture<void>> workingOn;
};
#endif // IMAGEDOWNLOADER_H
|
