QgsSingleSymbolRenderer *QgsSingleSymbolRenderer::clone() const
{
QgsSingleSymbolRenderer *r = new QgsSingleSymbolRenderer( mSymbol->clone() );
r->setUsingSymbolLevels( usingSymbolLevels() );
r->setDataDefinedSizeLegend( mDataDefinedSizeLegend ? new QgsDataDefinedSizeLegend( *mDataDefinedSizeLegend ) : nullptr );
copyRendererData( r );
return r;
}
void QgsDataDefinedSizeLegendWidget::updatePreview()
{
QgsMarkerSymbol *symbol = mSourceSymbol->clone();
symbol->setDataDefinedSize( mSizeProperty );
QgsSingleSymbolRenderer *r = new QgsSingleSymbolRenderer( symbol );
r->setDataDefinedSizeLegend( dataDefinedSizeLegend() );
mPreviewLayer->setRenderer( r );
mPreviewModel->refreshLayerLegend( mPreviewLayerNode );
viewLayerTree->expandAll();
}
void QgsSingleSymbolDialog::apply()
{
QgsSymbol* sy = new QgsSymbol( mVectorLayer->geometryType() );
apply( sy );
QgsSingleSymbolRenderer *renderer = new QgsSingleSymbolRenderer( mVectorLayer->geometryType() );
renderer->addSymbol( sy );
renderer->updateSymbolAttributes();
mVectorLayer->setRenderer( renderer );
}
static QString _getLayerSvgMarkerPath( const QgsProject &prj, const QString &layerName )
{
QList<QgsMapLayer *> layers = prj.mapLayersByName( layerName );
Q_ASSERT( layers.count() == 1 );
Q_ASSERT( layers[0]->type() == QgsMapLayerType::VectorLayer );
QgsVectorLayer *layer = qobject_cast<QgsVectorLayer *>( layers[0] );
Q_ASSERT( layer->renderer() );
Q_ASSERT( layer->renderer()->type() == "singleSymbol" );
QgsSingleSymbolRenderer *r = static_cast<QgsSingleSymbolRenderer *>( layer->renderer() );
QgsSymbol *s = r->symbol();
Q_ASSERT( s && s->symbolLayerCount() == 1 );
Q_ASSERT( s->symbolLayer( 0 )->layerType() == "SvgMarker" );
QgsSvgMarkerSymbolLayer *sl = static_cast<QgsSvgMarkerSymbolLayer *>( s->symbolLayer( 0 ) );
return sl->path();
}
QgsSingleSymbolRenderer *QgsSingleSymbolRenderer::convertFromRenderer( const QgsFeatureRenderer *renderer )
{
QgsSingleSymbolRenderer *r = nullptr;
if ( renderer->type() == QLatin1String( "singleSymbol" ) )
{
r = dynamic_cast<QgsSingleSymbolRenderer *>( renderer->clone() );
}
else if ( renderer->type() == QLatin1String( "pointDisplacement" ) || renderer->type() == QLatin1String( "pointCluster" ) )
{
const QgsPointDistanceRenderer *pointDistanceRenderer = dynamic_cast<const QgsPointDistanceRenderer *>( renderer );
if ( pointDistanceRenderer )
r = convertFromRenderer( pointDistanceRenderer->embeddedRenderer() );
}
else if ( renderer->type() == QLatin1String( "invertedPolygonRenderer" ) )
{
const QgsInvertedPolygonRenderer *invertedPolygonRenderer = dynamic_cast<const QgsInvertedPolygonRenderer *>( renderer );
if ( invertedPolygonRenderer )
r = convertFromRenderer( invertedPolygonRenderer->embeddedRenderer() );
}
if ( !r )
{
QgsRenderContext context;
QgsSymbolList symbols = const_cast<QgsFeatureRenderer *>( renderer )->symbols( context );
if ( !symbols.isEmpty() )
{
r = new QgsSingleSymbolRenderer( symbols.at( 0 )->clone() );
}
}
if ( r )
{
r->setOrderBy( renderer->orderBy() );
r->setOrderByEnabled( renderer->orderByEnabled() );
}
return r;
}
void QgsVectorLayerRenderer::drawRendererLevels( QgsFeatureIterator &fit )
{
QHash< QgsSymbol *, QList<QgsFeature> > features; // key = symbol, value = array of features
QgsSingleSymbolRenderer *selRenderer = nullptr;
if ( !mSelectedFeatureIds.isEmpty() )
{
selRenderer = new QgsSingleSymbolRenderer( QgsSymbol::defaultSymbol( mGeometryType ) );
selRenderer->symbol()->setColor( mContext.selectionColor() );
selRenderer->setVertexMarkerAppearance( mVertexMarkerStyle, mVertexMarkerSize );
selRenderer->startRender( mContext, mFields );
}
QgsExpressionContextScope *symbolScope = QgsExpressionContextUtils::updateSymbolScope( nullptr, new QgsExpressionContextScope() );
mContext.expressionContext().appendScope( symbolScope );
// 1. fetch features
QgsFeature fet;
while ( fit.nextFeature( fet ) )
{
if ( mContext.renderingStopped() )
{
qDebug( "rendering stop!" );
stopRenderer( selRenderer );
delete mContext.expressionContext().popScope();
return;
}
if ( !fet.hasGeometry() )
continue; // skip features without geometry
mContext.expressionContext().setFeature( fet );
QgsSymbol *sym = mRenderer->symbolForFeature( fet, mContext );
if ( !sym )
{
continue;
}
if ( !features.contains( sym ) )
{
features.insert( sym, QList<QgsFeature>() );
}
features[sym].append( fet );
// new labeling engine
if ( mContext.labelingEngine() )
{
QgsGeometry obstacleGeometry;
QgsSymbolList symbols = mRenderer->originalSymbolsForFeature( fet, mContext );
if ( !symbols.isEmpty() && fet.geometry().type() == QgsWkbTypes::PointGeometry )
{
obstacleGeometry = QgsVectorLayerLabelProvider::getPointObstacleGeometry( fet, mContext, symbols );
}
if ( !symbols.isEmpty() )
{
QgsExpressionContextUtils::updateSymbolScope( symbols.at( 0 ), symbolScope );
}
if ( mLabelProvider )
{
mLabelProvider->registerFeature( fet, mContext, obstacleGeometry );
}
if ( mDiagramProvider )
{
mDiagramProvider->registerFeature( fet, mContext, obstacleGeometry );
}
}
}
delete mContext.expressionContext().popScope();
if ( features.empty() )
{
// nothing to draw
stopRenderer( selRenderer );
return;
}
// find out the order
QgsSymbolLevelOrder levels;
QgsSymbolList symbols = mRenderer->symbols( mContext );
for ( int i = 0; i < symbols.count(); i++ )
{
QgsSymbol *sym = symbols[i];
for ( int j = 0; j < sym->symbolLayerCount(); j++ )
{
int level = sym->symbolLayer( j )->renderingPass();
if ( level < 0 || level >= 1000 ) // ignore invalid levels
continue;
QgsSymbolLevelItem item( sym, j );
while ( level >= levels.count() ) // append new empty levels
levels.append( QgsSymbolLevel() );
levels[level].append( item );
}
}
// 2. draw features in correct order
for ( int l = 0; l < levels.count(); l++ )
{
QgsSymbolLevel &level = levels[l];
for ( int i = 0; i < level.count(); i++ )
{
QgsSymbolLevelItem &item = level[i];
if ( !features.contains( item.symbol() ) )
{
QgsDebugMsg( QStringLiteral( "level item's symbol not found!" ) );
continue;
}
int layer = item.layer();
QList<QgsFeature> &lst = features[item.symbol()];
QList<QgsFeature>::iterator fit;
for ( fit = lst.begin(); fit != lst.end(); ++fit )
{
if ( mContext.renderingStopped() )
{
stopRenderer( selRenderer );
return;
}
bool sel = mContext.showSelection() && mSelectedFeatureIds.contains( fit->id() );
// maybe vertex markers should be drawn only during the last pass...
bool drawMarker = ( mDrawVertexMarkers && mContext.drawEditingInformation() && ( !mVertexMarkerOnlyForSelection || sel ) );
mContext.expressionContext().setFeature( *fit );
try
{
mRenderer->renderFeature( *fit, mContext, layer, sel, drawMarker );
}
catch ( const QgsCsException &cse )
{
Q_UNUSED( cse );
QgsDebugMsg( QStringLiteral( "Failed to transform a point while drawing a feature with ID '%1'. Ignoring this feature. %2" )
.arg( fet.id() ).arg( cse.what() ) );
}
}
}
}
stopRenderer( selRenderer );
}
void QgsSingleSymbolDialog::refreshMarkers()
{
QgsMarkerListModel *m = new QgsMarkerListModel( lstSymbols );
lstSymbols->setModel( m );
connect( lstSymbols->selectionModel(), SIGNAL( currentChanged( const QModelIndex &, const QModelIndex & ) ),
this, SLOT( symbolChanged( const QModelIndex &, const QModelIndex & ) ) );
// Find out the numerical fields of mVectorLayer, and populate the ComboBoxes
QgsVectorDataProvider *provider = mVectorLayer->dataProvider();
if ( provider )
{
const QgsFieldMap & fields = provider->fields();
QString str;
mRotationClassificationComboBox->addItem( DO_NOT_USE_STR, -1 );
mScaleClassificationComboBox->addItem( DO_NOT_USE_STR, -1 );
mSymbolComboBox->addItem( DO_NOT_USE_STR, -1 );
for ( QgsFieldMap::const_iterator it = fields.begin();
it != fields.end();
++it )
{
QVariant::Type type = ( *it ).type();
if ( type == QVariant::Int || type == QVariant::Double )
{
mRotationClassificationComboBox->addItem( it->name(), it.key() );
mScaleClassificationComboBox->addItem( it->name(), it.key() );
}
else if ( type == QVariant::String )
{
mSymbolComboBox->addItem( it->name(), it.key() );
}
}
}
else
{
QgsDebugMsg( "Warning, data provider is null" );
return;
}
//
//set outline / line style
//
cboOutlineStyle->addItem( QIcon( QgsSymbologyUtils::char2LinePixmap( "SolidLine" ) ), "", "SolidLine" );
cboOutlineStyle->addItem( QIcon( QgsSymbologyUtils::char2LinePixmap( "NoPen" ) ), tr( "None" ), "NoPen" );
cboOutlineStyle->addItem( QIcon( QgsSymbologyUtils::char2LinePixmap( "DashLine" ) ), "", "DashLine" );
cboOutlineStyle->addItem( QIcon( QgsSymbologyUtils::char2LinePixmap( "DotLine" ) ), "", "DotLine" );
cboOutlineStyle->addItem( QIcon( QgsSymbologyUtils::char2LinePixmap( "DashDotLine" ) ), "" , "DashDotLine" );
cboOutlineStyle->addItem( QIcon( QgsSymbologyUtils::char2LinePixmap( "DashDotDotLine" ) ), "", "DashDotDotLine" );
//
//set pattern icons and state
//
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "SolidPattern" ) ), "", "SolidPattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "NoBrush" ) ), tr( "None" ), "NoBrush" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "HorPattern" ) ), "", "HorPattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "VerPattern" ) ), "", "VerPattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "CrossPattern" ) ), "", "CrossPattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "BDiagPattern" ) ), "", "BDiagPattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "FDiagPattern" ) ), "", "FDiagPattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "DiagCrossPattern" ) ), "", "DiagCrossPattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "Dense1Pattern" ) ), "", "Dense1Pattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "Dense2Pattern" ) ), "", "Dense2Pattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "Dense3Pattern" ) ), "", "Dense3Pattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "Dense4Pattern" ) ), "", "Dense4Pattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "Dense5Pattern" ) ), "", "Dense5Pattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "Dense6Pattern" ) ), "", "Dense6Pattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "Dense7Pattern" ) ), "", "Dense7Pattern" );
cboFillStyle->addItem( QIcon( QgsSymbologyUtils::char2PatternPixmap( "TexturePattern" ) ), tr( "Texture" ), "TexturePattern" );
if ( mVectorLayer && mVectorLayer->geometryType() != QGis::Point )
{
mGroupPoint->setVisible( false );
mGroupPoint->setEnabled( false );
mGroupDrawingByField->setVisible( false );
mGroupDrawingByField->setEnabled( false );
}
if ( mDisabled )
{
unset();
}
else
{
if ( mVectorLayer )
{
const QgsSingleSymbolRenderer *renderer = dynamic_cast<const QgsSingleSymbolRenderer *>( mVectorLayer->renderer() );
if ( renderer )
{
// Set from the existing renderer
set( renderer->symbols().first() );
}
else
{
// Take values from an example instance
QgsSingleSymbolRenderer exampleRenderer = QgsSingleSymbolRenderer( mVectorLayer->geometryType() );
set( exampleRenderer.symbols().first() );
}
}
else
{
QgsDebugMsg( "Warning, layer is a null pointer" );
}
}
lstSymbols->blockSignals( false );
}