diff options
Diffstat (limited to 'src/location/maps/qgeofiletilecache_p.h')
| -rw-r--r-- | src/location/maps/qgeofiletilecache_p.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/location/maps/qgeofiletilecache_p.h b/src/location/maps/qgeofiletilecache_p.h new file mode 100644 index 00000000..6bd1ad2b --- /dev/null +++ b/src/location/maps/qgeofiletilecache_p.h @@ -0,0 +1,155 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the QtLocation module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPLv3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or later as published by the Free +** Software Foundation and appearing in the file LICENSE.GPL included in +** the packaging of this file. Please review the following information to +** ensure the GNU General Public License version 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#ifndef QGEOFILETILECACHE_P_H +#define QGEOFILETILECACHE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtLocation/qlocationglobal.h> + +#include <QObject> +#include <QCache> +#include "qcache3q_p.h" +#include <QSet> +#include <QMutex> +#include <QTimer> + +#include "qgeotilespec_p.h" +#include "qgeotiledmappingmanagerengine_p.h" +#include "qabstractgeotilecache_p.h" + +#include <QImage> + +QT_BEGIN_NAMESPACE + +class QGeoMappingManager; + +class QGeoTile; +class QGeoCachedTileMemory; +class QGeoFileTileCache; + +class QPixmap; +class QThread; + +/* This would be internal to qgeofiletilecache.cpp except that the eviction + * policy can't be defined without it being concrete here */ +class QGeoCachedTileDisk +{ +public: + ~QGeoCachedTileDisk(); + + QGeoTileSpec spec; + QString filename; + QString format; + QGeoFileTileCache *cache; +}; + +/* Custom eviction policy for the disk cache, to avoid deleting all the files + * when the application closes */ +class QCache3QTileEvictionPolicy : public QCache3QDefaultEvictionPolicy<QGeoTileSpec,QGeoCachedTileDisk> +{ +protected: + void aboutToBeRemoved(const QGeoTileSpec &key, QSharedPointer<QGeoCachedTileDisk> obj); + void aboutToBeEvicted(const QGeoTileSpec &key, QSharedPointer<QGeoCachedTileDisk> obj); +}; + +class Q_LOCATION_EXPORT QGeoFileTileCache : public QAbstractGeoTileCache +{ + Q_OBJECT +public: + QGeoFileTileCache(const QString &directory = QString(), QObject *parent = 0); + ~QGeoFileTileCache(); + + void setMaxDiskUsage(int diskUsage) Q_DECL_OVERRIDE; + int maxDiskUsage() const Q_DECL_OVERRIDE; + int diskUsage() const Q_DECL_OVERRIDE; + + void setMaxMemoryUsage(int memoryUsage) Q_DECL_OVERRIDE; + int maxMemoryUsage() const Q_DECL_OVERRIDE; + int memoryUsage() const Q_DECL_OVERRIDE; + + void setMinTextureUsage(int textureUsage) Q_DECL_OVERRIDE; + void setExtraTextureUsage(int textureUsage) Q_DECL_OVERRIDE; + int maxTextureUsage() const Q_DECL_OVERRIDE; + int minTextureUsage() const Q_DECL_OVERRIDE; + int textureUsage() const Q_DECL_OVERRIDE; + + QSharedPointer<QGeoTileTexture> get(const QGeoTileSpec &spec) Q_DECL_OVERRIDE; + + // can be called without a specific tileCache pointer + static void evictFromDiskCache(QGeoCachedTileDisk *td); + static void evictFromMemoryCache(QGeoCachedTileMemory *tm); + + void insert(const QGeoTileSpec &spec, + const QByteArray &bytes, + const QString &format, + QGeoTiledMappingManagerEngine::CacheAreas areas = QGeoTiledMappingManagerEngine::AllCaches) Q_DECL_OVERRIDE; + +private: + void printStats() Q_DECL_OVERRIDE; + void loadTiles(); + + QString directory() const; + + QSharedPointer<QGeoCachedTileDisk> addToDiskCache(const QGeoTileSpec &spec, const QString &filename); + QSharedPointer<QGeoCachedTileMemory> addToMemoryCache(const QGeoTileSpec &spec, const QByteArray &bytes, const QString &format); + QSharedPointer<QGeoTileTexture> addToTextureCache(const QGeoTileSpec &spec, const QPixmap &pixmap); + + static QString tileSpecToFilename(const QGeoTileSpec &spec, const QString &format, const QString &directory); + static QGeoTileSpec filenameToTileSpec(const QString &filename); + + QCache3Q<QGeoTileSpec, QGeoCachedTileDisk, QCache3QTileEvictionPolicy > diskCache_; + QCache3Q<QGeoTileSpec, QGeoCachedTileMemory > memoryCache_; + QCache3Q<QGeoTileSpec, QGeoTileTexture > textureCache_; + + QString directory_; + + int minTextureUsage_; + int extraTextureUsage_; +}; + +QT_END_NAMESPACE + +#endif // QGEOFILETILECACHE_P_H |