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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
56QT_BEGIN_NAMESPACE
57
58class QGeoMapRequestOptions;
59
60class QGeoTileFetcherPrivate;
61class QGeoTiledMappingManagerEngine;
62class QGeoTiledMapReply;
63class QGeoTileSpec;
64
65class Q_LOCATION_PRIVATE_EXPORT QGeoTileFetcher : public QObject
66{
67 Q_OBJECT
68 Q_DECLARE_PRIVATE(QGeoTileFetcher)
69
70public:
71 QGeoTileFetcher(QGeoMappingManagerEngine *parent);
72 virtual ~QGeoTileFetcher();
73
74public Q_SLOTS:
75 void updateTileRequests(const QSet<QGeoTileSpec> &tilesAdded, const QSet<QGeoTileSpec> &tilesRemoved);
76
77private Q_SLOTS:
78 void cancelTileRequests(const QSet<QGeoTileSpec> &tiles);
79 void requestNextTile();
80 void finished();
81
82Q_SIGNALS:
83 void tileFinished(const QGeoTileSpec &spec, const QByteArray &bytes, const QString &format);
84 void tileError(const QGeoTileSpec &spec, const QString &errorString);
85
86protected:
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
94private:
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
103QT_END_NAMESPACE
104
105#endif
106

source code of qtlocation/src/location/maps/qgeotilefetcher_p.h