int QgsUniqueValueRenderer::readXML( const QDomNode& rnode, QgsVectorLayer& vl )
{
mGeometryType = vl.geometryType();
QDomNode classnode = rnode.namedItem( "classificationfield" );
QString classificationField = classnode.toElement().text();
QgsVectorDataProvider* theProvider = vl.dataProvider();
if ( !theProvider )
{
return 1;
}
int classificationId = vl.fieldNameIndex( classificationField );
if ( classificationId == -1 )
{
//go on. Because with joins, it might be the joined layer is not loaded yet
}
setClassificationField( classificationId );
QDomNode symbolnode = rnode.namedItem( "symbol" );
while ( !symbolnode.isNull() )
{
QgsSymbol* msy = new QgsSymbol( mGeometryType );
msy->readXML( symbolnode, &vl );
insertValue( msy->lowerValue(), msy );
symbolnode = symbolnode.nextSibling();
}
updateSymbolAttributes();
vl.setRenderer( this );
return 0;
}
int QgsContinuousColorRenderer::readXML( const QDomNode& rnode, QgsVectorLayer& vl )
{
mGeometryType = vl.geometryType();
QDomNode classnode = rnode.namedItem( "classificationfield" );
QString classificationField = classnode.toElement().text();
QgsVectorDataProvider* theProvider = vl.dataProvider();
if ( !theProvider )
{
return 1;
}
int classificationId = vl.fieldNameIndex( classificationField );
if ( classificationId == -1 )
{
//go on. Because with joins, it might be the joined layer is not loaded yet
}
setClassificationField( classificationId );
//polygon outline
QDomNode polyoutlinenode = rnode.namedItem( "polygonoutline" );
QString polyoutline = polyoutlinenode.toElement().text();
if ( polyoutline == "0" )
{
mDrawPolygonOutline = false;
}
else if ( polyoutline == "1" )
{
mDrawPolygonOutline = true;
}
//read the settings for the renderitem of the minimum value
QDomNode lowernode = rnode.namedItem( "lowestsymbol" );
QDomNode lsymbolnode = lowernode.namedItem( "symbol" );
if ( ! lsymbolnode.isNull() )
{
QgsSymbol* lsy = new QgsSymbol( mGeometryType );
lsy->readXML( lsymbolnode, &vl );
setMinimumSymbol( lsy );
}
QDomNode uppernode = rnode.namedItem( "highestsymbol" );
QDomNode usymbolnode = uppernode.namedItem( "symbol" );
if ( ! usymbolnode.isNull() )
{
QgsSymbol* usy = new QgsSymbol( mGeometryType );
usy->readXML( usymbolnode, &vl );
setMaximumSymbol( usy );
}
vl.setRenderer( this );
return 0;
}
int QgsGraduatedSymbolRenderer::readXML( const QDomNode& rnode, QgsVectorLayer& vl )
{
mGeometryType = vl.geometryType();
QDomNode modeNode = rnode.namedItem( "mode" );
QString modeValue = modeNode.toElement().text();
QDomNode classnode = rnode.namedItem( "classificationfield" );
QString classificationField = classnode.toElement().text();
QgsVectorDataProvider* theProvider = vl.dataProvider();
if ( !theProvider )
{
return 1;
}
if ( modeValue == "Empty" )
{
mMode = QgsGraduatedSymbolRenderer::Empty;
}
else if ( modeValue == "Quantile" )
{
mMode = QgsGraduatedSymbolRenderer::Quantile;
}
else //default
{
mMode = QgsGraduatedSymbolRenderer::EqualInterval;
}
int classificationId = theProvider->fieldNameIndex( classificationField );
if ( classificationId == -1 )
{
return 2; //@todo: handle gracefully in gui situation where user needs to nominate field
}
setClassificationField( classificationId );
QDomNode symbolnode = rnode.namedItem( "symbol" );
while ( !symbolnode.isNull() )
{
QgsSymbol* sy = new QgsSymbol( mGeometryType );
sy->readXML( symbolnode, &vl );
addSymbol( sy );
symbolnode = symbolnode.nextSibling();
}
updateSymbolAttributes();
vl.setRenderer( this );
return 0;
}
int QgsGraduatedSymbolRenderer::readXML( const QDomNode& rnode, QgsVectorLayer& vl )
{
mGeometryType = vl.geometryType();
QDomNode modeNode = rnode.namedItem( "mode" );
QString modeValue = modeNode.toElement().text();
QDomNode classnode = rnode.namedItem( "classificationfield" );
QString classificationField = classnode.toElement().text();
QgsVectorDataProvider* theProvider = vl.dataProvider();
if ( !theProvider )
{
return 1;
}
if ( modeValue == "Empty" )
{
mMode = QgsGraduatedSymbolRenderer::Empty;
}
else if ( modeValue == "Quantile" )
{
mMode = QgsGraduatedSymbolRenderer::Quantile;
}
else //default
{
mMode = QgsGraduatedSymbolRenderer::EqualInterval;
}
int classificationId = vl.fieldNameIndex( classificationField );
if ( classificationId == -1 )
{
//go on. Because with joins, it might be the joined layer is not loaded yet
}
setClassificationField( classificationId );
QDomNode symbolnode = rnode.namedItem( "symbol" );
while ( !symbolnode.isNull() )
{
QgsSymbol* sy = new QgsSymbol( mGeometryType );
sy->readXML( symbolnode, &vl );
addSymbol( sy );
symbolnode = symbolnode.nextSibling();
}
updateSymbolAttributes();
vl.setRenderer( this );
return 0;
}
