void QgsLineSymbolV2::setDataDefinedWidth( const QgsDataDefined& dd )
{
const double symbolWidth = width();
for ( QgsSymbolLayerV2List::iterator it = mLayers.begin(); it != mLayers.end(); ++it )
{
QgsLineSymbolLayerV2* layer = static_cast<QgsLineSymbolLayerV2*>( *it );
if ( dd.hasDefaultValues() )
{
layer->removeDataDefinedProperty( "width" );
layer->removeDataDefinedProperty( "offset" );
}
else
{
if ( symbolWidth == 0 || qgsDoubleNear( layer->width(), symbolWidth ) )
{
layer->setDataDefinedProperty( "width", new QgsDataDefined( dd ) );
}
else
{
layer->setDataDefinedProperty( "width", scaleWholeSymbol( layer->width() / symbolWidth, dd ) );
}
if ( layer->offset() )
{
layer->setDataDefinedProperty( "offset", scaleWholeSymbol( layer->offset() / symbolWidth, dd ) );
}
}
}
}
void QgsMarkerSymbolV2::setDataDefinedSize( const QgsDataDefined &dd )
{
const double symbolSize = size();
for ( QgsSymbolLayerV2List::iterator it = mLayers.begin(); it != mLayers.end(); ++it )
{
QgsMarkerSymbolLayerV2* layer = static_cast<QgsMarkerSymbolLayerV2 *>( *it );
if ( dd.hasDefaultValues() )
{
layer->removeDataDefinedProperty( "size" );
layer->removeDataDefinedProperty( "offset" );
}
else
{
if ( symbolSize == 0 || qgsDoubleNear( layer->size(), symbolSize ) )
{
layer->setDataDefinedProperty( "size", new QgsDataDefined( dd ) );
}
else
{
layer->setDataDefinedProperty( "size", scaleWholeSymbol( layer->size() / symbolSize, dd ) );
}
if ( layer->offset().x() || layer->offset().y() )
{
layer->setDataDefinedProperty( "offset", scaleWholeSymbol(
layer->offset().x() / symbolSize,
layer->offset().y() / symbolSize, dd ) );
}
}
}
}
void QgsMarkerSymbolV2::setDataDefinedAngle( const QgsDataDefined& dd )
{
const double symbolRotation = angle();
for ( QgsSymbolLayerV2List::iterator it = mLayers.begin(); it != mLayers.end(); ++it )
{
QgsMarkerSymbolLayerV2* layer = static_cast<QgsMarkerSymbolLayerV2 *>( *it );
if ( dd.hasDefaultValues() )
{
layer->removeDataDefinedProperty( "angle" );
}
else
{
if ( qgsDoubleNear( layer->angle(), symbolRotation ) )
{
layer->setDataDefinedProperty( "angle", new QgsDataDefined( dd ) );
}
else
{
QgsDataDefined* rotatedDD = rotateWholeSymbol( layer->angle() - symbolRotation, dd );
layer->setDataDefinedProperty( "angle", rotatedDD );
}
}
}
}
void TestQgsDataDefined::defaultValues()
{
QgsDataDefined* dd = new QgsDataDefined();
QVERIFY( dd->hasDefaultValues() );
dd->setActive( true );
QVERIFY( !dd->hasDefaultValues() );
delete dd;
dd = new QgsDataDefined();
dd->setUseExpression( true );
QVERIFY( !dd->hasDefaultValues() );
delete dd;
dd = new QgsDataDefined();
dd->setExpressionString( QString( "expression" ) );
QVERIFY( !dd->hasDefaultValues() );
delete dd;
dd = new QgsDataDefined();
dd->setField( QString( "field" ) );
QVERIFY( !dd->hasDefaultValues() );
delete dd;
}
QgsLegendSymbolListV2 QgsCategorizedSymbolRendererV2::legendSymbolItemsV2() const
{
QgsLegendSymbolListV2 lst;
if ( mSourceSymbol.data() && mSourceSymbol->type() == QgsSymbolV2::Marker )
{
// check that all symbols that have the same size expression
QgsDataDefined ddSize;
foreach ( QgsRendererCategoryV2 category, mCategories )
{
const QgsMarkerSymbolV2 * symbol = static_cast<const QgsMarkerSymbolV2 *>( category.symbol() );
if ( !ddSize.hasDefaultValues() && symbol->dataDefinedSize() != ddSize )
{
// no common size expression
return QgsFeatureRendererV2::legendSymbolItemsV2();
}
else
{
ddSize = symbol->dataDefinedSize();
}
}
if ( !ddSize.isActive() || !ddSize.useExpression() )
{
return QgsFeatureRendererV2::legendSymbolItemsV2();
}
QgsScaleExpression exp( ddSize.expressionString() );
if ( exp.type() != QgsScaleExpression::Unknown )
{
QgsLegendSymbolItemV2 title( NULL, exp.baseExpression(), "" );
lst << title;
foreach ( double v, QgsSymbolLayerV2Utils::prettyBreaks( exp.minValue(), exp.maxValue(), 4 ) )
{
QgsLegendSymbolItemV2 si( mSourceSymbol.data(), QString::number( v ), "" );
QgsMarkerSymbolV2 * s = static_cast<QgsMarkerSymbolV2 *>( si.symbol() );
s->setDataDefinedSize( QgsDataDefined() );
s->setSize( exp.size( v ) );
lst << si;
}
// now list the categorized symbols
const QgsLegendSymbolListV2 list2 = QgsFeatureRendererV2::legendSymbolItemsV2() ;
foreach ( QgsLegendSymbolItemV2 item, list2 )
lst << item;
return lst;
}
