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3** Copyright (C) 2013-2018 Esri <contracts@esri.com>
4** Contact: https://www.qt.io/licensing/
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39
40#include "geotiledmapreply_esri.h"
41
42#include <QtLocation/private/qgeotilespec_p.h>
43
44QT_BEGIN_NAMESPACE
45
46static const unsigned char pngSignature[] = {0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, 0x00};
47static const unsigned char jpegSignature[] = {0xFF, 0xD8, 0xFF, 0x00};
48static const unsigned char gifSignature[] = {0x47, 0x49, 0x46, 0x38, 0x00};
49
50GeoTiledMapReplyEsri::GeoTiledMapReplyEsri(QNetworkReply *reply, const QGeoTileSpec &spec,
51 QObject *parent) :
52 QGeoTiledMapReply(spec, parent)
53{
54 if (!reply) {
55 setError(error: UnknownError, QStringLiteral("Null reply"));
56 return;
57 }
58 connect(sender: reply, SIGNAL(finished()), receiver: this, SLOT(networkReplyFinished()));
59 connect(sender: reply, SIGNAL(errorOccurred(QNetworkReply::NetworkError)),
60 receiver: this, SLOT(networkReplyError(QNetworkReply::NetworkError)));
61 connect(sender: this, signal: &QGeoTiledMapReply::aborted, receiver: reply, slot: &QNetworkReply::abort);
62 connect(sender: this, signal: &QObject::destroyed, receiver: reply, slot: &QObject::deleteLater);
63}
64
65GeoTiledMapReplyEsri::~GeoTiledMapReplyEsri()
66{
67}
68
69void GeoTiledMapReplyEsri::networkReplyFinished()
70{
71 QNetworkReply *reply = static_cast<QNetworkReply *>(sender());
72 reply->deleteLater();
73
74 if (reply->error() != QNetworkReply::NoError)
75 return;
76
77 QByteArray const& imageData = reply->readAll();
78
79 bool validFormat = true;
80 if (imageData.startsWith(c: reinterpret_cast<const char*>(pngSignature)))
81 setMapImageFormat(QStringLiteral("png"));
82 else if (imageData.startsWith(c: reinterpret_cast<const char*>(jpegSignature)))
83 setMapImageFormat(QStringLiteral("jpg"));
84 else if (imageData.startsWith(c: reinterpret_cast<const char*>(gifSignature)))
85 setMapImageFormat(QStringLiteral("gif"));
86 else
87 validFormat = false;
88
89 if (validFormat)
90 setMapImageData(imageData);
91
92 setFinished(true);
93}
94
95void GeoTiledMapReplyEsri::networkReplyError(QNetworkReply::NetworkError error)
96{
97 QNetworkReply *reply = static_cast<QNetworkReply *>(sender());
98 reply->deleteLater();
99 if (error == QNetworkReply::OperationCanceledError)
100 setFinished(true);
101 else
102 setError(error: QGeoTiledMapReply::CommunicationError, errorString: reply->errorString());
103}
104
105QT_END_NAMESPACE
106

source code of qtlocation/src/plugins/geoservices/esri/geotiledmapreply_esri.cpp