void QgsDxfExport::writeBlocks()
{
startSection();
writeGroup( 2, "BLOCKS" );
//iterate through all layers and get symbol layer pointers
QList< QPair< QgsSymbolLayerV2*, QgsSymbolV2* > > slList;
if ( mSymbologyExport != NoSymbology )
{
slList = symbolLayers();
}
QList< QPair< QgsSymbolLayerV2*, QgsSymbolV2* > >::const_iterator slIt = slList.constBegin();
for ( ; slIt != slList.constEnd(); ++slIt )
{
QgsMarkerSymbolLayerV2* ml = dynamic_cast< QgsMarkerSymbolLayerV2*>( slIt->first );
if ( ml )
{
//if point symbol layer and no data defined properties: write block
QgsRenderContext ct;
QgsSymbolV2RenderContext ctx( ct, QgsSymbolV2::MapUnit, slIt->second->alpha(), false, slIt->second->renderHints(), 0 );
ml->startRender( ctx );
//markers with data defined properties are inserted inline
if ( hasDataDefinedProperties( ml, slIt->second ) )
{
continue;
// ml->stopRender( ctx );
}
writeGroup( 0, "BLOCK" );
writeGroup( 8, 0 );
QString blockName = QString( "symbolLayer%1" ).arg( mBlockCounter++ );
writeGroup( 2, blockName );
writeGroup( 70, 64 );
//x/y/z coordinates of reference point
//todo: consider anchor point
// double size = ml->size();
// size *= mapUnitScaleFactor( mSymbologyScaleDenominator, ml->sizeUnit(), mMapUnits );
writeGroup( 10, 0 );
writeGroup( 20, 0 );
writeGroup( 30, 0 );
writeGroup( 3, blockName );
ml->writeDxf( *this, mapUnitScaleFactor( mSymbologyScaleDenominator, ml->sizeUnit(), mMapUnits ), "0", &ctx, 0 ); //maplayer 0 -> block receives layer from INSERT statement
writeGroup( 0, "ENDBLK" );
writeGroup( 8, 0 );
mPointSymbolBlocks.insert( ml, blockName );
ml->stopRender( ctx );
}
}
endSection();
}
void QgsArrowSymbolLayer::_resolveDataDefined( QgsSymbolV2RenderContext& context )
{
if ( !hasDataDefinedProperties() )
return; // shortcut if case there is no data defined properties at all
bool ok;
if ( hasDataDefinedProperty( "arrow_width" ) )
{
context.setOriginalValueVariable( arrowWidth() );
double w = evaluateDataDefinedProperty( "arrow_width", context, QVariant(), &ok ).toDouble();
if ( ok )
{
mScaledArrowWidth = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), w, arrowWidthUnit(), arrowWidthUnitScale() );
}
}
if ( hasDataDefinedProperty( "arrow_start_width" ) )
{
context.setOriginalValueVariable( arrowStartWidth() );
double w = evaluateDataDefinedProperty( "arrow_start_width", context, QVariant(), &ok ).toDouble();
if ( ok )
{
mScaledArrowStartWidth = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), w, arrowStartWidthUnit(), arrowStartWidthUnitScale() );
}
}
if ( hasDataDefinedProperty( "head_size" ) )
{
context.setOriginalValueVariable( headSize() );
double w = evaluateDataDefinedProperty( "head_size", context, QVariant(), &ok ).toDouble();
if ( ok )
{
mScaledHeadSize = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), w, headSizeUnit(), headSizeUnitScale() );
}
}
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET ) )
{
context.setOriginalValueVariable( offset() );
double w = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET, context, QVariant(), &ok ).toDouble();
if ( ok )
{
mScaledOffset = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), w, offsetUnit(), offsetMapUnitScale() );
}
}
if ( hasDataDefinedProperty( "head_type" ) )
{
context.setOriginalValueVariable( headType() );
int h = evaluateDataDefinedProperty( "head_type", context, QVariant(), &ok ).toInt();
if ( ok )
{
mComputedHeadType = static_cast<HeadType>( h );
}
}
}
void QgsEllipseSymbolLayerV2::startRender( QgsSymbolV2RenderContext& context )
{
QgsMarkerSymbolLayerV2::startRender( context ); // get anchor point expressions
if ( !context.feature() || !hasDataDefinedProperties() )
{
preparePath( mSymbolName, context );
}
mPen.setColor( mOutlineColor );
mPen.setStyle( mOutlineStyle );
mPen.setWidthF( QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), mOutlineWidth, mOutlineWidthUnit, mOutlineWidthMapUnitScale ) );
mBrush.setColor( mFillColor );
prepareExpressions( context );
}
void QgsSimpleLineSymbolLayerV2::applyDataDefinedSymbology( QgsSymbolV2RenderContext& context, QPen& pen, QPen& selPen, double& offset )
{
if ( !hasDataDefinedProperties() )
return; // shortcut
//data defined properties
bool hasStrokeWidthExpression = false;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_WIDTH ) )
{
context.setOriginalValueVariable( mWidth );
double scaledWidth = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(),
evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_WIDTH, context, mWidth ).toDouble(),
mWidthUnit, mWidthMapUnitScale );
pen.setWidthF( scaledWidth );
selPen.setWidthF( scaledWidth );
hasStrokeWidthExpression = true;
}
//color
bool ok;
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_COLOR ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodeColor( pen.color() ) );
QString colorString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_COLOR, context, QVariant(), &ok ).toString();
if ( ok )
pen.setColor( QgsSymbolLayerV2Utils::decodeColor( colorString ) );
}
//offset
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET ) )
{
context.setOriginalValueVariable( mOffset );
offset = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_OFFSET, context, offset ).toDouble();
}
//dash dot vector
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_CUSTOMDASH ) )
{
double scaledWidth = QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), mWidth, mWidthUnit, mWidthMapUnitScale );
double dashWidthDiv = mPen.widthF();
if ( hasStrokeWidthExpression )
{
dashWidthDiv = pen.widthF();
scaledWidth = pen.widthF();
}
//fix dash pattern width in Qt 4.8
QStringList versionSplit = QString( qVersion() ).split( '.' );
if ( versionSplit.size() > 1
&& versionSplit.at( 1 ).toInt() >= 8
&& ( scaledWidth * context.renderContext().rasterScaleFactor() ) < 1.0 )
{
dashWidthDiv = 1.0;
}
QVector<qreal> dashVector;
QStringList dashList = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_CUSTOMDASH, context, QVariant(), &ok ).toString().split( ';' );
if ( ok )
{
QStringList::const_iterator dashIt = dashList.constBegin();
for ( ; dashIt != dashList.constEnd(); ++dashIt )
{
dashVector.push_back( QgsSymbolLayerV2Utils::convertToPainterUnits( context.renderContext(), dashIt->toDouble(), mCustomDashPatternUnit, mCustomDashPatternMapUnitScale ) / dashWidthDiv );
}
pen.setDashPattern( dashVector );
}
}
//line style
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_LINE_STYLE ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodePenStyle( pen.style() ) );
QString lineStyleString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_LINE_STYLE, context, QVariant(), &ok ).toString();
if ( ok )
pen.setStyle( QgsSymbolLayerV2Utils::decodePenStyle( lineStyleString ) );
}
//join style
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_JOINSTYLE ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodePenJoinStyle( pen.joinStyle() ) );
QString joinStyleString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_JOINSTYLE, context, QVariant(), &ok ).toString();
if ( ok )
pen.setJoinStyle( QgsSymbolLayerV2Utils::decodePenJoinStyle( joinStyleString ) );
}
//cap style
if ( hasDataDefinedProperty( QgsSymbolLayerV2::EXPR_CAPSTYLE ) )
{
context.setOriginalValueVariable( QgsSymbolLayerV2Utils::encodePenCapStyle( pen.capStyle() ) );
QString capStyleString = evaluateDataDefinedProperty( QgsSymbolLayerV2::EXPR_CAPSTYLE, context, QVariant(), &ok ).toString();
if ( ok )
pen.setCapStyle( QgsSymbolLayerV2Utils::decodePenCapStyle( capStyleString ) );
}
}
