void QgsServerProjectParser::combineExtentAndCrsOfGroupChildren( QDomElement& groupElem, QDomDocument& doc, bool considerMapExtent ) const
{
QgsRectangle combinedBBox;
QSet<QString> combinedCRSSet;
bool firstBBox = true;
bool firstCRSSet = true;
QDomNodeList layerChildren = groupElem.childNodes();
for ( int j = 0; j < layerChildren.size(); ++j )
{
QDomElement childElem = layerChildren.at( j ).toElement();
if ( childElem.tagName() != "Layer" )
continue;
QgsRectangle bbox = layerBoundingBoxInProjectCRS( childElem, doc );
if ( !bbox.isEmpty() )
{
if ( firstBBox )
{
combinedBBox = bbox;
firstBBox = false;
}
else
{
combinedBBox.combineExtentWith( &bbox );
}
}
//combine crs set
QSet<QString> crsSet;
if ( crsSetForLayer( childElem, crsSet ) )
{
if ( firstCRSSet )
{
combinedCRSSet = crsSet;
firstCRSSet = false;
}
else
{
combinedCRSSet.intersect( crsSet );
}
}
}
QgsConfigParserUtils::appendCRSElementsToLayer( groupElem, doc, combinedCRSSet.toList(), supportedOutputCrsList() );
const QgsCoordinateReferenceSystem& groupCRS = projectCRS();
if ( considerMapExtent )
{
QgsRectangle mapRect = mapRectangle();
if ( !mapRect.isEmpty() )
{
combinedBBox = mapRect;
}
}
QgsConfigParserUtils::appendLayerBoundingBoxes( groupElem, doc, combinedBBox, groupCRS );
}
QgsRectangle QgsProjectParser::layerBoundingBoxInProjectCRS( const QDomElement& layerElem ) const
{
QgsRectangle BBox;
if ( layerElem.isNull() )
{
return BBox;
}
//read box coordinates and layer auth. id
QDomElement boundingBoxElem = layerElem.firstChildElement( "BoundingBox" );
if ( boundingBoxElem.isNull() )
{
return BBox;
}
double minx, miny, maxx, maxy;
bool conversionOk;
minx = boundingBoxElem.attribute( "minx" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
miny = boundingBoxElem.attribute( "miny" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
maxx = boundingBoxElem.attribute( "maxx" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
maxy = boundingBoxElem.attribute( "maxy" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
//create layer crs
const QgsCoordinateReferenceSystem& layerCrs = QgsCRSCache::instance()->crsByAuthId( boundingBoxElem.attribute( "CRS" ) );
if ( !layerCrs.isValid() )
{
return BBox;
}
//get project crs
const QgsCoordinateReferenceSystem& projectCrs = projectCRS();
QgsCoordinateTransform t( layerCrs, projectCrs );
//transform
BBox = t.transformBoundingBox( QgsRectangle( minx, miny, maxx, maxy ) );
return BBox;
}
QgsRectangle QgsServerProjectParser::layerBoundingBoxInProjectCRS( const QDomElement& layerElem, const QDomDocument &doc ) const
{
QgsRectangle BBox;
if ( layerElem.isNull() )
{
return BBox;
}
//read box coordinates and layer auth. id
QDomElement boundingBoxElem = layerElem.firstChildElement( "BoundingBox" );
if ( boundingBoxElem.isNull() )
{
return BBox;
}
double minx, miny, maxx, maxy;
bool conversionOk;
minx = boundingBoxElem.attribute( "minx" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
miny = boundingBoxElem.attribute( "miny" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
maxx = boundingBoxElem.attribute( "maxx" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
maxy = boundingBoxElem.attribute( "maxy" ).toDouble( &conversionOk );
if ( !conversionOk )
{
return BBox;
}
QString version = doc.documentElement().attribute( "version" );
//create layer crs
const QgsCoordinateReferenceSystem& layerCrs = QgsCRSCache::instance()->crsByAuthId( boundingBoxElem.attribute( version == "1.1.1" ? "SRS" : "CRS" ) );
if ( !layerCrs.isValid() )
{
return BBox;
}
BBox.setXMinimum( minx );
BBox.setXMaximum( maxx );
BBox.setYMinimum( miny );
BBox.setYMaximum( maxy );
if ( version != "1.1.1" && layerCrs.axisInverted() )
{
BBox.invert();
}
//get project crs
const QgsCoordinateReferenceSystem& projectCrs = projectCRS();
QgsCoordinateTransform t( layerCrs, projectCrs );
//transform
BBox = t.transformBoundingBox( BBox );
return BBox;
}
QStringList QgsServerProjectParser::supportedOutputCrsList() const
{
QStringList crsList;
if ( !mXMLDoc )
{
return crsList;
}
QDomElement qgisElem = mXMLDoc->documentElement();
if ( qgisElem.isNull() )
{
return crsList;
}
QDomElement propertiesElem = qgisElem.firstChildElement( "properties" );
if ( propertiesElem.isNull() )
{
return crsList;
}
QDomElement wmsCrsElem = propertiesElem.firstChildElement( "WMSCrsList" );
if ( !wmsCrsElem.isNull() )
{
QDomNodeList valueList = wmsCrsElem.elementsByTagName( "value" );
for ( int i = 0; i < valueList.size(); ++i )
{
crsList.append( valueList.at( i ).toElement().text() );
}
}
else
{
QDomElement wmsEpsgElem = propertiesElem.firstChildElement( "WMSEpsgList" );
if ( !wmsEpsgElem.isNull() )
{
QDomNodeList valueList = wmsEpsgElem.elementsByTagName( "value" );
bool conversionOk;
for ( int i = 0; i < valueList.size(); ++i )
{
int epsgNr = valueList.at( i ).toElement().text().toInt( &conversionOk );
if ( conversionOk )
{
crsList.append( QString( "EPSG:%1" ).arg( epsgNr ) );
}
}
}
else
{
//no CRS restriction defined in the project. Provide project CRS, wgs84 and pseudo mercator
QString projectCrsId = projectCRS().authid();
crsList.append( projectCrsId );
if ( projectCrsId.compare( "EPSG:4326", Qt::CaseInsensitive ) != 0 )
{
crsList.append( QString( "EPSG:%1" ).arg( 4326 ) );
}
if ( projectCrsId.compare( "EPSG:3857", Qt::CaseInsensitive ) != 0 )
{
crsList.append( QString( "EPSG:%1" ).arg( 3857 ) );
}
}
}
return crsList;
}
