1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2015 The Qt Company Ltd. 4 ** Contact: http://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtLocation module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL3$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see http://www.qt.io/terms-conditions. For further 15 ** information use the contact form at http://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPLv3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or later as published by the Free 28 ** Software Foundation and appearing in the file LICENSE.GPL included in 29 ** the packaging of this file. Please review the following information to 30 ** ensure the GNU General Public License version 2.0 requirements will be 31 ** met: http://www.gnu.org/licenses/gpl-2.0.html. 32 ** 33 ** $QT_END_LICENSE$ 34 ** 35 ****************************************************************************/ 36 37 #ifndef QGEOTILEFETCHER_H 38 #define QGEOTILEFETCHER_H 39 40 // 41 // W A R N I N G 42 // ------------- 43 // 44 // This file is not part of the Qt API. It exists purely as an 45 // implementation detail. This header file may change from version to 46 // version without notice, or even be removed. 47 // 48 // We mean it. 49 // 50 51 #include <QObject> 52 #include <QtLocation/private/qlocationglobal_p.h> 53 #include "qgeomaptype_p.h" 54 #include "qgeotiledmappingmanagerengine_p.h" 55 56 QT_BEGIN_NAMESPACE 57 58 class QGeoMapRequestOptions; 59 60 class QGeoTileFetcherPrivate; 61 class QGeoTiledMappingManagerEngine; 62 class QGeoTiledMapReply; 63 class QGeoTileSpec; 64 65 class Q_LOCATION_PRIVATE_EXPORT QGeoTileFetcher : public QObject 66 { 67 Q_OBJECT 68 Q_DECLARE_PRIVATE(QGeoTileFetcher) 69 70 public: 71 QGeoTileFetcher(QGeoMappingManagerEngine *parent); 72 virtual ~QGeoTileFetcher(); 73 74 public Q_SLOTS: 75 void updateTileRequests(const QSet<QGeoTileSpec> &tilesAdded, const QSet<QGeoTileSpec> &tilesRemoved); 76 77 private Q_SLOTS: 78 void cancelTileRequests(const QSet<QGeoTileSpec> &tiles); 79 void requestNextTile(); 80 void finished(); 81 82 Q_SIGNALS: 83 void tileFinished(const QGeoTileSpec &spec, const QByteArray &bytes, const QString &format); 84 void tileError(const QGeoTileSpec &spec, const QString &errorString); 85 86 protected: 87 QGeoTileFetcher(QGeoTileFetcherPrivate &dd, QGeoMappingManagerEngine *parent); 88 89 void timerEvent(QTimerEvent *event); 90 QAbstractGeoTileCache::CacheAreas cacheHint() const; 91 virtual bool initialized() const; 92 virtual bool fetchingEnabled() const; 93 94 private: 95 96 virtual QGeoTiledMapReply *getTileImage(const QGeoTileSpec &spec) = 0; 97 virtual void handleReply(QGeoTiledMapReply *reply, const QGeoTileSpec &spec); 98 99 Q_DISABLE_COPY(QGeoTileFetcher) 100 friend class QGeoTiledMappingManagerEngine; 101 }; 102 103 QT_END_NAMESPACE 104 105 #endif 106