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 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 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;
}
void QgsComposerSymbolItem::readXML( const QDomElement& itemElem )
{
if ( itemElem.isNull() )
{
return;
}
setText( itemElem.attribute( "text", "" ) );
setLayerID( itemElem.attribute( "layerId", "" ) );
QgsVectorLayer* vLayer = qobject_cast<QgsVectorLayer*>( QgsMapLayerRegistry::instance()->mapLayer( mLayerID ) );
if ( vLayer )
{
QDomElement symbolElem = itemElem.firstChildElement( "symbol" );
if ( !symbolElem.isNull() )
{
QgsSymbol* symbol = new QgsSymbol( vLayer->geometryType() );
symbol->readXML( symbolElem, vLayer );
setSymbol( symbol );
//add icon
switch ( symbol->type() )
{
case QGis::Point:
setIcon( QIcon( QPixmap::fromImage( symbol->getPointSymbolAsImage() ) ) );
break;
case QGis::Line:
setIcon( QIcon( QPixmap::fromImage( symbol->getLineSymbolAsImage() ) ) );
break;
case QGis::Polygon:
setIcon( QIcon( QPixmap::fromImage( symbol->getPolygonSymbolAsImage() ) ) );
break;
case QGis::NoGeometry:
setIcon( QIcon( QgsApplication::activeThemePath() + "/mIconTableLayer.png" ) );
break;
case QGis::UnknownGeometry:
// should not occur
break;
}
}
}
}
int QgsSingleSymbolRenderer::readXML( const QDomNode& rnode, QgsVectorLayer& vl )
{
mGeometryType = vl.geometryType();
QgsSymbol* sy = new QgsSymbol( mGeometryType );
QDomNode synode = rnode.namedItem( "symbol" );
if ( synode.isNull() )
{
QgsDebugMsg( "No symbol node in project file's renderitem Dom" );
// XXX abort?
}
else
{
sy->readXML( synode, &vl );
}
updateSymbolAttributes();
//create a renderer and add it to the vector layer
addSymbol( sy );
vl.setRenderer( this );
return 0;
}