void QgsSymbolsListWidget::createAuxiliaryField()
{
// try to create an auxiliary layer if not yet created
if ( !mLayer->auxiliaryLayer() )
{
QgsNewAuxiliaryLayerDialog dlg( mLayer, this );
dlg.exec();
}
// return if still not exists
if ( !mLayer->auxiliaryLayer() )
return;
QgsPropertyOverrideButton *button = qobject_cast<QgsPropertyOverrideButton *>( sender() );
QgsSymbolLayer::Property key = static_cast< QgsSymbolLayer::Property >( button->propertyKey() );
const QgsPropertyDefinition def = QgsSymbolLayer::propertyDefinitions()[key];
// create property in auxiliary storage if necessary
if ( !mLayer->auxiliaryLayer()->exists( def ) )
mLayer->auxiliaryLayer()->addAuxiliaryField( def );
// update property with join field name from auxiliary storage
QgsProperty property = button->toProperty();
property.setField( QgsAuxiliaryLayer::nameFromProperty( def, true ) );
property.setActive( true );
button->updateFieldLists();
button->setToProperty( property );
QgsMarkerSymbol *markerSymbol = static_cast<QgsMarkerSymbol *>( mSymbol );
QgsLineSymbol *lineSymbol = static_cast<QgsLineSymbol *>( mSymbol );
switch ( key )
{
case QgsSymbolLayer::PropertyAngle:
if ( markerSymbol )
markerSymbol->setDataDefinedAngle( button->toProperty() );
break;
case QgsSymbolLayer::PropertySize:
if ( markerSymbol )
{
markerSymbol->setDataDefinedSize( button->toProperty() );
markerSymbol->setScaleMethod( QgsSymbol::ScaleDiameter );
}
break;
case QgsSymbolLayer::PropertyStrokeWidth:
if ( lineSymbol )
lineSymbol->setDataDefinedWidth( button->toProperty() );
break;
default:
break;
}
emit changed();
}
void QgsFeatureRenderer::convertSymbolRotation( QgsSymbol * symbol, const QString & field )
{
if ( symbol->type() == QgsSymbol::Marker )
{
QgsMarkerSymbol * s = static_cast<QgsMarkerSymbol *>( symbol );
const QgsDataDefined dd(( s->angle()
? QString::number( s->angle() ) + " + "
: QString() ) + field );
s->setDataDefinedAngle( dd );
}
}
void QgsSymbolsListWidget::updateDataDefinedMarkerAngle()
{
QgsMarkerSymbol *markerSymbol = static_cast<QgsMarkerSymbol *>( mSymbol );
QgsProperty dd( mRotationDDBtn->toProperty() );
spinAngle->setEnabled( !mRotationDDBtn->isActive() );
QgsProperty symbolDD( markerSymbol->dataDefinedAngle() );
if ( // shall we remove datadefined expressions for layers ?
( !symbolDD && !dd )
// shall we set the "en masse" expression for properties ?
|| dd )
{
markerSymbol->setDataDefinedAngle( dd );
emit changed();
}
}
void QgsMapToolRotatePointSymbols::createPixmapItem( QgsMarkerSymbol *markerSymbol )
{
if ( !mCanvas )
{
return;
}
//get the image that is used for that symbol, but without point rotation
QImage pointImage;
if ( markerSymbol )
{
QgsSymbol *clone = markerSymbol->clone();
QgsMarkerSymbol *markerClone = static_cast<QgsMarkerSymbol *>( clone );
markerClone->setDataDefinedAngle( QgsProperty() );
pointImage = markerClone->bigSymbolPreviewImage();
delete clone;
}
mRotationItem = new QgsPointRotationItem( mCanvas );
mRotationItem->setSymbol( pointImage );
}
