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3 ** Copyright (C) 2016 Aaron McCarthy <mccarthy.aaron@gmail.com>
4 ** Contact: https://www.qt.io/licensing/
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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
49 QT_BEGIN_NAMESPACE
50
providersResolved(const QVector<QGeoTileProviderOsm * > & providers)51 static 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
59 class QGeoTileFetcherOsmPrivate : public QGeoTileFetcherPrivate
60 {
61 Q_DECLARE_PUBLIC(QGeoTileFetcherOsm)
62 public:
63 QGeoTileFetcherOsmPrivate();
64 virtual ~QGeoTileFetcherOsmPrivate();
65
66 private:
67 Q_DISABLE_COPY(QGeoTileFetcherOsmPrivate)
68 };
69
QGeoTileFetcherOsmPrivate()70 QGeoTileFetcherOsmPrivate::QGeoTileFetcherOsmPrivate() : QGeoTileFetcherPrivate()
71 {
72 }
73
~QGeoTileFetcherOsmPrivate()74 QGeoTileFetcherOsmPrivate::~QGeoTileFetcherOsmPrivate()
75 {
76 }
77
78
QGeoTileFetcherOsm(const QVector<QGeoTileProviderOsm * > & providers,QNetworkAccessManager * nm,QGeoMappingManagerEngine * parent)79 QGeoTileFetcherOsm::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(provider, &QGeoTileProviderOsm::resolutionFinished,
90 this, &QGeoTileFetcherOsm::onProviderResolutionFinished);
91 connect(provider, &QGeoTileProviderOsm::resolutionError,
92 this, &QGeoTileFetcherOsm::onProviderResolutionError);
93 connect(provider, &QGeoTileProviderOsm::resolutionRequired,
94 this, &QGeoTileFetcherOsm::restartTimer, Qt::QueuedConnection);
95 provider->resolveProvider();
96 }
97 }
98 if (m_ready)
99 readyUpdated();
100 }
101
setUserAgent(const QByteArray & userAgent)102 void QGeoTileFetcherOsm::setUserAgent(const QByteArray &userAgent)
103 {
104 m_userAgent = userAgent;
105 }
106
initialized() const107 bool 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
onProviderResolutionFinished(const QGeoTileProviderOsm * provider)117 void QGeoTileFetcherOsm::onProviderResolutionFinished(const QGeoTileProviderOsm *provider)
118 {
119 if ((m_ready = providersResolved(m_providers))) {
120 qWarning("QGeoTileFetcherOsm: all providers resolved");
121 readyUpdated();
122 }
123 emit providerDataUpdated(provider);
124 }
125
onProviderResolutionError(const QGeoTileProviderOsm * provider)126 void QGeoTileFetcherOsm::onProviderResolutionError(const QGeoTileProviderOsm *provider)
127 {
128 if ((m_ready = providersResolved(m_providers))) {
129 qWarning("QGeoTileFetcherOsm: all providers resolved");
130 readyUpdated();
131 }
132 emit providerDataUpdated(provider);
133 }
134
restartTimer()135 void QGeoTileFetcherOsm::restartTimer()
136 {
137 Q_D(QGeoTileFetcherOsm);
138
139 if (!d->queue_.isEmpty())
140 d->timer_.start(0, this);
141 }
142
getTileImage(const QGeoTileSpec & spec)143 QGeoTiledMapReply *QGeoTileFetcherOsm::getTileImage(const QGeoTileSpec &spec)
144 {
145 int id = spec.mapId();
146 if (id < 1 || id > m_providers.size()) {
147 qWarning("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(spec.x(), spec.y(), spec.zoom());
159 QNetworkRequest request;
160 request.setHeader(QNetworkRequest::UserAgentHeader, 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
readyUpdated()166 void QGeoTileFetcherOsm::readyUpdated()
167 {
168 updateTileRequests(QSet<QGeoTileSpec>(), QSet<QGeoTileSpec>());
169 }
170
171 QT_END_NAMESPACE
172