bool CadastreWrapper::downloadTiles(City city)
{
m_progress = new QProgressDialog();
m_progress->setWindowTitle(QApplication::tr("Downloading tiles..."));
m_progress->setMaximum(city.tileRows() * city.tileColumns());
m_progress->setMinimum(0);
m_progress->setValue(0);
m_progress->show();
QDir cache = m_cacheDir;
cache.cd(city.code());
for (int r = 0 ; r < city.tileRows() ; ++r) {
for (int c = 0 ; c < city.tileColumns() ; ++c) {
QString fileName = QString("%1-%2.png").arg(r).arg(c);
qDebug() << fileName;
if (cache.exists(fileName) && QFileInfo(cache, fileName).size()) {
// the file already exists, cool !
} else {
QRect rect = city.tileGeometry(r, c);
QString bbox = QString("%1.0,%2.0,%3.0,%4.0").arg(rect.left()).arg(rect.bottom()).arg(rect.right()).arg(rect.top());
fileName = cache.absoluteFilePath(fileName);
m_waitingTiles[fileName] = city.tileGeometry(r, c);
}
}
}
m_progress->setMaximum(m_waitingTiles.count());
m_startTime = QDateTime::currentDateTime();
while (m_waitingTiles.count() > 0 && !m_progress->wasCanceled()) {
QString fileName = m_waitingTiles.begin().key();
QRect rect = m_waitingTiles.begin().value();
m_waitingTiles.take(fileName);
QString bbox = QString("%1.0,%2.0,%3.0,%4.0").arg(rect.left()).arg(rect.top()).arg(rect.right()).arg(rect.bottom());
QString url = QString("http://www.cadastre.gouv.fr/scpc/wms?version=1.1&request=GetMap&layers=CDIF:LS3,CDIF:LS2,CDIF:LS1,CDIF:PARCELLE,CDIF:NUMERO,CDIF:PT3,CDIF:PT2,CDIF:PT1,CDIF:LIEUDIT,CDIF:COMMUNE&format=image/png&bbox=%1&width=600&height=600&exception=application/vnd.ogc.se_inimage&styles=LS3_90,LS2_90,LS1_90,PARCELLE_90,NUMERO_90,PT3_90,PT2_90,PT1_90,LIEUDIT_90,COMMUNE_90").arg(bbox);
qDebug() << url;
m_pendingTiles[m_networkManager->get(QNetworkRequest(QUrl(url)))] = fileName;
while (m_pendingTiles.count() > 0 && !m_progress->wasCanceled()) {
qApp->processEvents();
}
}
bool ret = true;
if (m_progress->wasCanceled())
ret = false;
else {
QSettings settings(cache.absoluteFilePath("cache.ini"), QSettings::IniFormat);
settings.setValue("complete", true);
settings.sync();
}
m_progress->hide();
m_progress->deleteLater();
m_progress = NULL;
return ret;
}
