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[WMS provider] Avoid excessive number of decimals in BBOX parameter

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Fix #14928
This commit is contained in:
Even Rouault 2016-06-13 12:00:53 +02:00
parent 2ce4eb52c5
commit dfe4553869
1 changed files with 15 additions and 5 deletions
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20
src/providers/wms/qgswmsprovider.cpp
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@ -3636,14 +3636,24 @@ void QgsWmsTiledImageDownloadHandler::repeatTileRequest( QNetworkRequest const &
connect( reply, SIGNAL( finished() ), this, SLOT( tileReplyFinished() ) );
}
// Some servers like http://glogow.geoportal2.pl/map/wms/wms.php? do not BBOX
// to be formatted with excessive precision. As a double is exactly represented
// with 19 decimal figures, do not attempt to output more
static QString formatDouble( double x )
{
if ( x == 0.0 )
return "0";
const int numberOfDecimals = qMax( 0, 19 - static_cast<int>( ceil( log10( fabs( x ) ) ) ) );
return qgsDoubleToString( x, numberOfDecimals );
}
QString QgsWmsProvider::toParamValue( const QgsRectangle& rect, bool changeXY )
{
// Warning: does not work with scientific notation
return QString( changeXY ? "%2,%1,%4,%3" : "%1,%2,%3,%4" )
.arg( qgsDoubleToString( rect.xMinimum() ),
qgsDoubleToString( rect.yMinimum() ),
qgsDoubleToString( rect.xMaximum() ),
qgsDoubleToString( rect.yMaximum() ) );
.arg( formatDouble( rect.xMinimum() ),
formatDouble( rect.yMinimum() ),
formatDouble( rect.xMaximum() ),
formatDouble( rect.yMaximum() ) );
}
void QgsWmsProvider::setSRSQueryItem( QUrl& url )