QGIS API Documentation 3.29.0-Master (694ebda27c)
qgsnetworkdiskcache.h
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1/***************************************************************************
2 qgsnetworkdiskcache.h - Thread-safe interface for QNetworkDiskCache
3 -------------------
4 begin : 2016-03-05
5 copyright : (C) 2016 by Juergen E. Fischer
6 email : jef at norbit dot de
7 ***************************************************************************/
8
9/***************************************************************************
10 * *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
15 * *
16 ***************************************************************************/
17
18#ifndef QGSNETWORKDISKCACHE_H
19#define QGSNETWORKDISKCACHE_H
20
21#define SIP_NO_FILE
22
23#include <QNetworkDiskCache>
24#include <QMutex>
25
26class QNetworkDiskCache;
27
29
30class ExpirableNetworkDiskCache : public QNetworkDiskCache
31{
32 Q_OBJECT
33
34 public:
35 explicit ExpirableNetworkDiskCache( QObject *parent = nullptr ) : QNetworkDiskCache( parent ) {}
36 qint64 runExpire() { return QNetworkDiskCache::expire(); }
37};
38
40
48class QgsNetworkDiskCache : public QNetworkDiskCache
49{
50 Q_OBJECT
51
52 public:
53
55 QString cacheDirectory() const;
56
58 void setCacheDirectory( const QString &cacheDir );
59
61 qint64 maximumCacheSize() const;
62
64 void setMaximumCacheSize( qint64 size );
65
67 QNetworkCacheMetaData metaData( const QUrl &url ) override;
68
70 void updateMetaData( const QNetworkCacheMetaData &metaData ) override;
71
73 QIODevice *data( const QUrl &url ) override;
74
76 bool remove( const QUrl &url ) override;
77
79 qint64 cacheSize() const override;
80
82 QIODevice *prepare( const QNetworkCacheMetaData &metaData ) override;
83
85 void insert( QIODevice *device ) override;
86
88 QNetworkCacheMetaData fileMetaData( const QString &fileName ) const;
89
90 public slots:
92 void clear() override;
93
94 protected:
96 qint64 expire() override;
97
98 private:
99 explicit QgsNetworkDiskCache( QObject *parent );
100
101 static ExpirableNetworkDiskCache sDiskCache;
102 static QMutex sDiskCacheMutex;
103
105};
106
107#endif // QGSNETWORKDISKCACHE_H
network access manager for QGIS
Wrapper implementation of QNetworkDiskCache with all methods guarded by a mutex soly for internal use...
void setCacheDirectory(const QString &cacheDir)
QIODevice * data(const QUrl &url) override
void updateMetaData(const QNetworkCacheMetaData &metaData) override
QNetworkCacheMetaData metaData(const QUrl &url) override
qint64 maximumCacheSize() const
QNetworkCacheMetaData fileMetaData(const QString &fileName) const
void insert(QIODevice *device) override
QIODevice * prepare(const QNetworkCacheMetaData &metaData) override
bool remove(const QUrl &url) override
void setMaximumCacheSize(qint64 size)
qint64 cacheSize() const override
QString cacheDirectory() const
qint64 expire() override