mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-28 00:17:30 -05:00
Write linetypes for simple line with custom dash pattern
This commit is contained in:
Marco Hugentobler
parent
4984ad6de9
commit
ae2b72b8f6
@ -20,6 +20,7 @@
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#include "qgspoint.h"
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#include "qgsrendererv2.h"
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#include "qgssymbollayerv2.h"
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#include "qgslinesymbollayerv2.h"
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#include "qgsvectorlayer.h"
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#include <QIODevice>
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#include <QTextStream>
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@ -285,7 +286,7 @@ double QgsDxfExport::mDxfColors[][3] =
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{1, 1, 1} // 255
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};
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QgsDxfExport::QgsDxfExport(): mSymbologyScaleDenominator( 1.0 ), mSymbologyExport( NoSymbology ), mMapUnits( QGis::Meters )
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QgsDxfExport::QgsDxfExport(): mSymbologyScaleDenominator( 1.0 ), mSymbologyExport( NoSymbology ), mMapUnits( QGis::Meters ), mSymbolLayerCounter( 0 )
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{
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}
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@ -378,14 +379,24 @@ void QgsDxfExport::writeTables( QTextStream& stream )
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stream << " 2\n";
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stream << "TABLES\n";
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//iterate through all layers and get symbol layer pointers
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QList<QgsSymbolLayerV2*> slList;
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if ( mSymbologyExport != NoSymbology )
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{
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slList = symbolLayers();
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}
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//LTYPE
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mLineStyles.clear();
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stream << " 0\n";
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stream << "TABLE\n";
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stream << " 2\n";
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stream << "LTYPE\n";
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stream << " 70\n";
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stream << " 1\n"; //number of linetypes
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stream << QString( "%1\n" ).arg( nLineTypes( slList ) ); //number of linetypes
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stream << " 0\n";
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//add continuous style as default
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stream << "LTYPE\n";
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stream << " 2\n";
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stream << "CONTINUOUS\n";
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@ -399,6 +410,14 @@ void QgsDxfExport::writeTables( QTextStream& stream )
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stream << "0\n";
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stream << " 40\n"; //todo: add segments in group 49
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stream << "0\n";
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//add symbol layer linestyles
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QList<QgsSymbolLayerV2*>::const_iterator slIt = slList.constBegin();
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for ( ; slIt != slList.constEnd(); ++slIt )
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{
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writeSymbolLayerLinestyle( stream, *slIt );
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}
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stream << " 0\n";
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stream << "ENDTAB\n";
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@ -598,7 +617,7 @@ void QgsDxfExport::endSection( QTextStream& stream )
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stream << "ENDSEC\n";
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}
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void QgsDxfExport::writePolyline( QTextStream& stream, const QgsPolyline& line, const QString& layer, int color,
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void QgsDxfExport::writePolyline( QTextStream& stream, const QgsPolyline& line, const QString& layer, const QString& lineStyleName, int color,
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double width, bool polygon )
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{
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stream << " 0\n";
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@ -606,7 +625,7 @@ void QgsDxfExport::writePolyline( QTextStream& stream, const QgsPolyline& line,
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stream << " 8\n";
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stream << layer << "\n";
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stream << " 6\n";
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stream << "CONTINUOUS\n"; //todo: reference to linetype here
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stream << QString( "%1\n" ).arg( lineStyleName );
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stream << " 62\n";
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stream << color << "\n";
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stream << " 66\n";
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@ -671,6 +690,12 @@ void QgsDxfExport::addFeature( const QgsFeature& fet, QTextStream& stream, const
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{
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int c = colorFromSymbolLayer( symbolLayer );
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double width = widthFromSymbolLayer( symbolLayer );
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QString lineStyleName = "CONTINUOUS";
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QHash< const QgsSymbolLayerV2*, QString >::const_iterator lineTypeIt = mLineStyles.find( symbolLayer );
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if ( lineTypeIt != mLineStyles.constEnd() )
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{
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lineStyleName = lineTypeIt.value();
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}
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//todo: write point symbols as blocks
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@ -678,7 +703,7 @@ void QgsDxfExport::addFeature( const QgsFeature& fet, QTextStream& stream, const
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//single line
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if ( geometryType == QGis::WKBLineString || geometryType == QGis::WKBLineString25D )
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{
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writePolyline( stream, geom->asPolyline(), layer, c, width, false );
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writePolyline( stream, geom->asPolyline(), layer, lineStyleName, c, width, false );
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}
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//multiline
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@ -688,7 +713,7 @@ void QgsDxfExport::addFeature( const QgsFeature& fet, QTextStream& stream, const
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QgsMultiPolyline::const_iterator lIt = multiLine.constBegin();
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for ( ; lIt != multiLine.constEnd(); ++lIt )
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{
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writePolyline( stream, *lIt, layer, c, width, false );
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writePolyline( stream, *lIt, layer, lineStyleName, c, width, false );
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}
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}
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@ -699,7 +724,7 @@ void QgsDxfExport::addFeature( const QgsFeature& fet, QTextStream& stream, const
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QgsPolygon::const_iterator polyIt = polygon.constBegin();
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for ( ; polyIt != polygon.constEnd(); ++polyIt ) //iterate over rings
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{
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writePolyline( stream, *polyIt, layer, c, width, true );
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writePolyline( stream, *polyIt, layer, lineStyleName, c, width, true );
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}
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}
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@ -713,7 +738,7 @@ void QgsDxfExport::addFeature( const QgsFeature& fet, QTextStream& stream, const
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QgsPolygon::const_iterator polyIt = mpIt->constBegin();
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for ( ; polyIt != mpIt->constEnd(); ++polyIt )
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{
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writePolyline( stream, *polyIt, layer, c, width, true );
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writePolyline( stream, *polyIt, layer, lineStyleName, c, width, true );
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}
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}
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}
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@ -857,3 +882,118 @@ double QgsDxfExport::mapUnitScaleFactor( double scaleDenominator, QgsSymbolV2::O
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}
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return 1.0;
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}
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QList<QgsSymbolLayerV2*> QgsDxfExport::symbolLayers()
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{
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QList<QgsSymbolLayerV2*> symbolLayers;
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QList< QgsMapLayer* >::iterator lIt = mLayers.begin();
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for ( ; lIt != mLayers.end(); ++lIt )
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{
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//cast to vector layer
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QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( *lIt );
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if ( !vl )
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{
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continue;
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}
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//get rendererv2
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QgsFeatureRendererV2* r = vl->rendererV2();
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if ( !r )
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{
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continue;
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}
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//get all symbols
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QgsSymbolV2List symbols = r->symbols();
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QgsSymbolV2List::iterator symbolIt = symbols.begin();
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for ( ; symbolIt != symbols.end(); ++symbolIt )
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{
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int maxSymbolLayers = ( *symbolIt )->symbolLayerCount();
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if ( mSymbologyExport != SymbolLayerSymbology )
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{
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maxSymbolLayers = 1;
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}
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for ( int i = 0; i < maxSymbolLayers; ++i )
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{
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symbolLayers.append(( *symbolIt )->symbolLayer( i ) );
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}
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}
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}
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return symbolLayers;
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}
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void QgsDxfExport::writeSymbolLayerLinestyle( QTextStream& stream, const QgsSymbolLayerV2* symbolLayer )
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{
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if ( !symbolLayer )
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{
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return;
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}
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//QgsSimpleLineSymbolLayer can have customDashVector() / customDashPatternUnit()
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const QgsSimpleLineSymbolLayerV2* simpleLine = dynamic_cast< const QgsSimpleLineSymbolLayerV2* >( symbolLayer );
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if ( simpleLine )
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{
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if ( simpleLine->useCustomDashPattern() )
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{
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++mSymbolLayerCounter;
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QString name = QString( "symbolLayer%1" ).arg( mSymbolLayerCounter );
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QVector<qreal> dashPattern = simpleLine->customDashVector();
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double length = 0;
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QVector<qreal>::const_iterator dashIt = dashPattern.constBegin();
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for ( ; dashIt != dashPattern.constEnd(); ++dashIt )
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{
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length += *dashIt;
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}
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stream << "LTYPE\n";
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stream << " 2\n";
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stream << QString( "%1\n" ).arg( name );
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stream << " 70\n";
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stream << "64\n";
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stream << " 3\n";
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stream << "\n";
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stream << " 72\n";
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stream << "65\n";
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stream << " 73\n";
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stream << QString( "%1\n" ).arg( dashPattern.size() ); //number of segments
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stream << " 40\n"; //todo: add segments in group 49
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stream << QString( "%1\n" ).arg( length );
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dashIt = dashPattern.constBegin();
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bool isSpace = false;
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for ( ; dashIt != dashPattern.constEnd(); ++dashIt )
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{
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stream << "49\n";
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//map units or mm?
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double segmentLength = ( isSpace ? -*dashIt : *dashIt );
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segmentLength *= mapUnitScaleFactor( mSymbologyScaleDenominator, simpleLine->customDashPatternUnit(), mMapUnits );
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stream << QString( "%1\n" ).arg( segmentLength );
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isSpace = !isSpace;
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}
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mLineStyles.insert( symbolLayer, name );
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}
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}
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}
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int QgsDxfExport::nLineTypes( const QList<QgsSymbolLayerV2*>& symbolLayers )
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{
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int nLineTypes = 0;
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QList<QgsSymbolLayerV2*>::const_iterator slIt = symbolLayers.constBegin();
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for ( ; slIt != symbolLayers.constEnd(); ++slIt )
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{
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const QgsSimpleLineSymbolLayerV2* simpleLine = dynamic_cast< const QgsSimpleLineSymbolLayerV2* >( *slIt );
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if ( simpleLine )
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{
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if ( simpleLine->useCustomDashPattern() )
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{
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++nLineTypes;
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}
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}
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}
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return nLineTypes;
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}
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@ -66,6 +66,9 @@ class QgsDxfExport
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static double mDxfColors[][3];
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int mSymbolLayerCounter; //internal counter
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QHash< const QgsSymbolLayerV2*, QString > mLineStyles; //symbol layer name types
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void writeHeader( QTextStream& stream );
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void writeTables( QTextStream& stream );
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void writeEntities( QTextStream& stream );
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@ -75,7 +78,7 @@ class QgsDxfExport
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void startSection( QTextStream& stream );
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void endSection( QTextStream& stream );
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void writePolyline( QTextStream& stream, const QgsPolyline& line, const QString& layer, int color,
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void writePolyline( QTextStream& stream, const QgsPolyline& line, const QString& layer, const QString& lineStyleName, int color,
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double width = -1, bool polygon = false );
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void writeVertex( QTextStream& stream, const QgsPoint& pt, const QString& layer );
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@ -98,6 +101,10 @@ class QgsDxfExport
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void startRender( QgsVectorLayer* vl ) const;
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void stopRender( QgsVectorLayer* vl ) const;
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static double mapUnitScaleFactor( double scaleDenominator, QgsSymbolV2::OutputUnit symbolUnits, QGis::UnitType mapUnits );
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QList<QgsSymbolLayerV2*> symbolLayers();
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static int nLineTypes( const QList<QgsSymbolLayerV2*>& symbolLayers );
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void writeSymbolLayerLinestyle( QTextStream& stream, const QgsSymbolLayerV2* symbolLayer );
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};
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#endif // QGSDXFEXPORT_H
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