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3** Copyright (C) 2016 Aaron McCarthy <mccarthy.aaron@gmail.com>
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39
40#include "qgeotilefetcherosm.h"
41#include "qgeomapreplyosm.h"
42
43#include <QtNetwork/QNetworkAccessManager>
44#include <QtNetwork/QNetworkRequest>
45#include <QtLocation/private/qgeotilespec_p.h>
46#include <QtLocation/private/qgeotilefetcher_p_p.h>
47
48
49QT_BEGIN_NAMESPACE
50
51static bool providersResolved(const QVector<QGeoTileProviderOsm *> &providers)
52{
53 foreach (const QGeoTileProviderOsm *provider, providers)
54 if (!provider->isResolved())
55 return false;
56 return true;
57}
58
59class QGeoTileFetcherOsmPrivate : public QGeoTileFetcherPrivate
60{
61 Q_DECLARE_PUBLIC(QGeoTileFetcherOsm)
62public:
63 QGeoTileFetcherOsmPrivate();
64 virtual ~QGeoTileFetcherOsmPrivate();
65
66private:
67 Q_DISABLE_COPY(QGeoTileFetcherOsmPrivate)
68};
69
70QGeoTileFetcherOsmPrivate::QGeoTileFetcherOsmPrivate() : QGeoTileFetcherPrivate()
71{
72}
73
74QGeoTileFetcherOsmPrivate::~QGeoTileFetcherOsmPrivate()
75{
76}
77
78
79QGeoTileFetcherOsm::QGeoTileFetcherOsm(const QVector<QGeoTileProviderOsm *> &providers,
80 QNetworkAccessManager *nm,
81 QGeoMappingManagerEngine *parent)
82: QGeoTileFetcher(*new QGeoTileFetcherOsmPrivate(), parent), m_userAgent("Qt Location based application"),
83 m_providers(providers), m_nm(nm), m_ready(true)
84{
85 m_nm->setParent(this);
86 foreach (QGeoTileProviderOsm *provider, m_providers) {
87 if (!provider->isResolved()) {
88 m_ready = false;
89 connect(sender: provider, signal: &QGeoTileProviderOsm::resolutionFinished,
90 receiver: this, slot: &QGeoTileFetcherOsm::onProviderResolutionFinished);
91 connect(sender: provider, signal: &QGeoTileProviderOsm::resolutionError,
92 receiver: this, slot: &QGeoTileFetcherOsm::onProviderResolutionError);
93 connect(sender: provider, signal: &QGeoTileProviderOsm::resolutionRequired,
94 receiver: this, slot: &QGeoTileFetcherOsm::restartTimer, type: Qt::QueuedConnection);
95 provider->resolveProvider();
96 }
97 }
98 if (m_ready)
99 readyUpdated();
100}
101
102void QGeoTileFetcherOsm::setUserAgent(const QByteArray &userAgent)
103{
104 m_userAgent = userAgent;
105}
106
107bool QGeoTileFetcherOsm::initialized() const
108{
109 if (!m_ready) {
110 foreach (QGeoTileProviderOsm *provider, m_providers)
111 if (!provider->isResolved())
112 provider->resolveProvider();
113 }
114 return m_ready;
115}
116
117void QGeoTileFetcherOsm::onProviderResolutionFinished(const QGeoTileProviderOsm *provider)
118{
119 if ((m_ready = providersResolved(providers: m_providers))) {
120 qWarning(msg: "QGeoTileFetcherOsm: all providers resolved");
121 readyUpdated();
122 }
123 emit providerDataUpdated(provider);
124}
125
126void QGeoTileFetcherOsm::onProviderResolutionError(const QGeoTileProviderOsm *provider)
127{
128 if ((m_ready = providersResolved(providers: m_providers))) {
129 qWarning(msg: "QGeoTileFetcherOsm: all providers resolved");
130 readyUpdated();
131 }
132 emit providerDataUpdated(provider);
133}
134
135void QGeoTileFetcherOsm::restartTimer()
136{
137 Q_D(QGeoTileFetcherOsm);
138
139 if (!d->queue_.isEmpty())
140 d->timer_.start(msec: 0, obj: this);
141}
142
143QGeoTiledMapReply *QGeoTileFetcherOsm::getTileImage(const QGeoTileSpec &spec)
144{
145 int id = spec.mapId();
146 if (id < 1 || id > m_providers.size()) {
147 qWarning(msg: "Unknown map id %d\n", spec.mapId());
148 if (m_providers.isEmpty())
149 return nullptr;
150 else
151 id = 1;
152 }
153 id -= 1; // TODO: make OSM map ids start from 0.
154
155 if (spec.zoom() > m_providers[id]->maximumZoomLevel() || spec.zoom() < m_providers[id]->minimumZoomLevel())
156 return nullptr;
157
158 const QUrl url = m_providers[id]->tileAddress(x: spec.x(), y: spec.y(), z: spec.zoom());
159 QNetworkRequest request;
160 request.setHeader(header: QNetworkRequest::UserAgentHeader, value: m_userAgent);
161 request.setUrl(url);
162 QNetworkReply *reply = m_nm->get(request);
163 return new QGeoMapReplyOsm(reply, spec, m_providers[id]->format());
164}
165
166void QGeoTileFetcherOsm::readyUpdated()
167{
168 updateTileRequests(tilesAdded: QSet<QGeoTileSpec>(), tilesRemoved: QSet<QGeoTileSpec>());
169}
170
171QT_END_NAMESPACE
172

source code of qtlocation/src/plugins/geoservices/osm/qgeotilefetcherosm.cpp