/
qgsdxfexport.cpp
2395 lines (2031 loc) · 76.8 KB
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qgsdxfexport.cpp
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/***************************************************************************
qgsdxfexport.cpp
----------------
begin : September 2013
copyright : (C) 2013 by Marco Hugentobler
email : marco at sourcepole dot ch
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
// Specs:
// AutoCAD 2000: http://www.autodesk.com/techpubs/autocad/acad2000/dxf/
// AutoCAD 2002: http://www.autodesk.com/techpubs/autocad/dxf/dxf2002.pdf
// AutoCAD 2004: http://atrey.karlin.mff.cuni.cz/projekty/vrr/doc/dxf14.pdf
// AutoCAD 2006: http://images.autodesk.com/adsk/files/dxf_format.pdf
// AutoCAD 2008: http://images.autodesk.com/adsk/files/acad_dxf0.pdf
// AutoCAD 2009: http://images.autodesk.com/adsk/files/acad_dxf.pdf
// AutoCAD 2011: http://images.autodesk.com/adsk/files/acad_dxf2.pdf
// AutoCAD 2012: http://images.autodesk.com/adsk/files/autocad_2012_pdf_dxf-reference_enu.pdf
// AutoCAD 2014: http://images.autodesk.com/adsk/files/autocad_2014_pdf_dxf_reference_enu.pdf
#include "qgsdxfexport.h"
#include "qgsgeometrygeneratorsymbollayer.h"
#include "qgsgeometrycollection.h"
#include "qgscurvepolygon.h"
#include "qgscompoundcurve.h"
#include "qgscircularstring.h"
#include "qgslinestring.h"
#include "qgsvectordataprovider.h"
#include "qgspointxy.h"
#include "qgsproject.h"
#include "qgsrenderer.h"
#include "qgssymbollayer.h"
#include "qgsfillsymbollayer.h"
#include "qgsfeatureiterator.h"
#include "qgslinesymbollayer.h"
#include "qgsvectorlayer.h"
#include "qgsunittypes.h"
#include "qgstextlabelfeature.h"
#include "qgslogger.h"
#include "qgsmaplayerstyle.h"
#include "qgsmaplayerstylemanager.h"
#include "qgsexpressioncontextutils.h"
#include "qgsdxfexport_p.h"
#include "qgswkbtypes.h"
#include "qgspoint.h"
#include "qgsgeos.h"
#include "pal/feature.h"
#include "pal/pointset.h"
#include "pal/labelposition.h"
#include <QIODevice>
QgsDxfExport::QgsDxfExport() = default;
QgsDxfExport::~QgsDxfExport()
{
qDeleteAll( mJobs );
}
void QgsDxfExport::setMapSettings( const QgsMapSettings &settings )
{
mMapSettings = settings;
}
void QgsDxfExport::setFlags( QgsDxfExport::Flags flags )
{
mFlags = flags;
}
QgsDxfExport::Flags QgsDxfExport::flags() const
{
return mFlags;
}
void QgsDxfExport::addLayers( const QList<DxfLayer> &layers )
{
QList<QgsMapLayer *> layerList;
mLayerNameAttribute.clear();
layerList.reserve( layers.size() );
for ( const DxfLayer &dxfLayer : layers )
{
layerList << dxfLayer.layer();
if ( dxfLayer.layerOutputAttributeIndex() >= 0 )
mLayerNameAttribute.insert( dxfLayer.layer()->id(), dxfLayer.layerOutputAttributeIndex() );
}
mMapSettings.setLayers( layerList );
}
void QgsDxfExport::writeGroup( int code, int i )
{
writeGroupCode( code );
writeInt( i );
}
void QgsDxfExport::writeGroup( int code, double d )
{
writeGroupCode( code );
writeDouble( d );
}
void QgsDxfExport::writeGroup( int code, const QString &s )
{
writeGroupCode( code );
writeString( s );
}
void QgsDxfExport::writeGroup( int code, const QgsPoint &p )
{
writeGroup( code + 10, p.x() );
writeGroup( code + 20, p.y() );
if ( !mForce2d && p.is3D() && std::isfinite( p.z() ) )
writeGroup( code + 30, p.z() );
}
void QgsDxfExport::writeGroup( const QColor &color, int exactMatchCode, int rgbCode, int transparencyCode )
{
int minDistAt = -1;
int minDist = std::numeric_limits<int>::max();
for ( int i = 1; i < static_cast< int >( sizeof( sDxfColors ) / sizeof( *sDxfColors ) ) && minDist > 0; ++i )
{
int dist = color_distance( color.rgba(), i );
if ( dist >= minDist )
continue;
minDistAt = i;
minDist = dist;
}
if ( minDist == 0 && minDistAt != 7 )
{
// exact full opaque match, not black/white
writeGroup( exactMatchCode, minDistAt );
if ( color.alpha() == 255 )
return;
}
int c = ( color.red() & 0xff ) * 0x10000 + ( color.green() & 0xff ) * 0x100 + ( color.blue() & 0xff );
writeGroup( rgbCode, c );
if ( transparencyCode != -1 && color.alpha() < 255 )
writeGroup( transparencyCode, 0x2000000 | color.alpha() );
}
void QgsDxfExport::writeGroupCode( int code )
{
mTextStream << QStringLiteral( "%1\n" ).arg( code, 3, 10, QChar( ' ' ) );
}
void QgsDxfExport::writeInt( int i )
{
mTextStream << QStringLiteral( "%1\n" ).arg( i, 6, 10, QChar( ' ' ) );
}
void QgsDxfExport::writeDouble( double d )
{
QString s( qgsDoubleToString( d ) );
if ( !s.contains( '.' ) )
s += QLatin1String( ".0" );
mTextStream << s << '\n';
}
void QgsDxfExport::writeString( const QString &s )
{
mTextStream << s << '\n';
}
QgsDxfExport::ExportResult QgsDxfExport::writeToFile( QIODevice *d, const QString &encoding )
{
if ( !d )
{
return ExportResult::InvalidDeviceError;
}
if ( !d->isOpen() && !d->open( QIODevice::WriteOnly | QIODevice::Truncate ) )
{
return ExportResult::DeviceNotWritableError;
}
mTextStream.setDevice( d );
mTextStream.setCodec( encoding.toLocal8Bit() );
if ( mCrs.isValid() )
mMapSettings.setDestinationCrs( mCrs );
if ( mExtent.isEmpty() )
{
const QList< QgsMapLayer * > layers = mMapSettings.layers();
for ( QgsMapLayer *ml : layers )
{
QgsVectorLayer *vl = qobject_cast<QgsVectorLayer *>( ml );
if ( !vl )
continue;
QgsRectangle layerExtent = vl->extent();
if ( layerExtent.isEmpty() )
continue;
layerExtent = mMapSettings.layerToMapCoordinates( vl, layerExtent );
if ( mExtent.isEmpty() )
{
mExtent = layerExtent;
}
else
{
mExtent.combineExtentWith( layerExtent );
}
}
}
if ( mExtent.isEmpty() )
return ExportResult::EmptyExtentError;
QgsUnitTypes::DistanceUnit mapUnits = mCrs.mapUnits();
mMapSettings.setExtent( mExtent );
int dpi = 96;
mFactor = 1000 * dpi / mSymbologyScale / 25.4 * QgsUnitTypes::fromUnitToUnitFactor( mapUnits, QgsUnitTypes::DistanceMeters );
mMapSettings.setOutputSize( QSize( mExtent.width() * mFactor, mExtent.height() * mFactor ) );
mMapSettings.setOutputDpi( dpi );
writeHeader( dxfEncoding( encoding ) );
prepareRenderers();
writeTables();
writeBlocks();
writeEntities();
writeEndFile();
stopRenderers();
return ExportResult::Success;
}
QgsUnitTypes::DistanceUnit QgsDxfExport::mapUnits() const
{
return mMapUnits;
}
void QgsDxfExport::writeHeader( const QString &codepage )
{
writeGroup( 999, QStringLiteral( "DXF created from QGIS" ) );
startSection();
writeGroup( 2, QStringLiteral( "HEADER" ) );
// ACADVER
writeGroup( 9, QStringLiteral( "$ACADVER" ) );
writeGroup( 1, QStringLiteral( "AC1015" ) );
// EXTMIN
writeGroup( 9, QStringLiteral( "$EXTMIN" ) );
writeGroup( 0, QgsPoint( QgsWkbTypes::PointZ, mExtent.xMinimum(), mExtent.yMinimum(), 0.0 ) );
// EXTMAX
writeGroup( 9, QStringLiteral( "$EXTMAX" ) );
writeGroup( 0, QgsPoint( QgsWkbTypes::PointZ, mExtent.xMaximum(), mExtent.yMaximum(), 0.0 ) );
// Global linetype scale
writeGroup( 9, QStringLiteral( "$LTSCALE" ) );
writeGroup( 40, 1.0 );
// Point display mode (33 = circle)
writeGroup( 9, QStringLiteral( "$PDMODE" ) );
writeGroup( 70, 33 );
// Point display size
writeGroup( 9, QStringLiteral( "$PDSIZE" ) );
writeGroup( 40, 1 );
// Controls paper space linetype scaling (1 = No special linetype scaling, 0 = Viewport scaling governs linetype scaling)
writeGroup( 9, QStringLiteral( "$PSLTSCALE" ) );
writeGroup( 70, 0 );
writeGroup( 9, QStringLiteral( "$HANDSEED" ) );
writeGroup( 5, DXF_HANDMAX );
writeGroup( 9, QStringLiteral( "$DWGCODEPAGE" ) );
writeGroup( 3, codepage );
endSection();
}
int QgsDxfExport::writeHandle( int code, int handle )
{
if ( handle == 0 )
handle = mNextHandleId++;
Q_ASSERT_X( handle < DXF_HANDMAX, "QgsDxfExport::writeHandle(int, int)", "DXF handle too large" );
writeGroup( code, QString::number( handle, 16 ) );
return handle;
}
void QgsDxfExport::writeTables()
{
startSection();
writeGroup( 2, QStringLiteral( "TABLES" ) );
// Iterate through all layers and get symbol layer pointers
QgsRenderContext context = renderContext();
QList< QPair< QgsSymbolLayer *, QgsSymbol * > > slList;
if ( mSymbologyExport != NoSymbology )
{
slList = symbolLayers( context );
}
// Line types
mLineStyles.clear();
writeGroup( 0, QStringLiteral( "TABLE" ) );
writeGroup( 2, QStringLiteral( "LTYPE" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTable" ) );
writeGroup( 70, nLineTypes( slList ) + 5 );
writeDefaultLinetypes();
// Add custom linestyles
for ( const auto &symbolLayer : qgis::as_const( slList ) )
{
writeSymbolLayerLinetype( symbolLayer.first );
}
writeGroup( 0, QStringLiteral( "ENDTAB" ) );
// BLOCK_RECORD
writeGroup( 0, QStringLiteral( "TABLE" ) );
writeGroup( 2, QStringLiteral( "BLOCK_RECORD" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTable" ) );
writeGroup( 70, 0 );
const QStringList blockStrings = QStringList() << QStringLiteral( "*Model_Space" ) << QStringLiteral( "*Paper_Space" ) << QStringLiteral( "*Paper_Space0" );
for ( const QString &block : blockStrings )
{
writeGroup( 0, QStringLiteral( "BLOCK_RECORD" ) );
mBlockHandles.insert( block, writeHandle() );
writeGroup( 100, QStringLiteral( "AcDbSymbolTableRecord" ) );
writeGroup( 100, QStringLiteral( "AcDbBlockTableRecord" ) );
writeGroup( 2, block );
}
int i = 0;
for ( const auto &symbolLayer : qgis::as_const( slList ) )
{
QgsMarkerSymbolLayer *ml = dynamic_cast< QgsMarkerSymbolLayer *>( symbolLayer.first );
if ( !ml )
continue;
if ( hasDataDefinedProperties( ml, symbolLayer.second ) )
continue;
QString name = QStringLiteral( "symbolLayer%1" ).arg( i++ );
writeGroup( 0, QStringLiteral( "BLOCK_RECORD" ) );
mBlockHandles.insert( name, writeHandle() );
writeGroup( 100, QStringLiteral( "AcDbSymbolTableRecord" ) );
writeGroup( 100, QStringLiteral( "AcDbBlockTableRecord" ) );
writeGroup( 2, name );
}
writeGroup( 0, QStringLiteral( "ENDTAB" ) );
// APPID
writeGroup( 0, QStringLiteral( "TABLE" ) );
writeGroup( 2, QStringLiteral( "APPID" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTable" ) );
writeGroup( 70, 1 );
writeGroup( 0, QStringLiteral( "APPID" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTableRecord" ) );
writeGroup( 100, QStringLiteral( "AcDbRegAppTableRecord" ) );
writeGroup( 2, QStringLiteral( "ACAD" ) );
writeGroup( 70, 0 );
writeGroup( 0, QStringLiteral( "ENDTAB" ) );
// VIEW
writeGroup( 0, QStringLiteral( "TABLE" ) );
writeGroup( 2, QStringLiteral( "VIEW" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTable" ) );
writeGroup( 70, 0 );
writeGroup( 0, QStringLiteral( "ENDTAB" ) );
// UCS
writeGroup( 0, QStringLiteral( "TABLE" ) );
writeGroup( 2, QStringLiteral( "UCS" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTable" ) );
writeGroup( 70, 0 );
writeGroup( 0, QStringLiteral( "ENDTAB" ) );
// VPORT
writeGroup( 0, QStringLiteral( "TABLE" ) );
writeGroup( 2, QStringLiteral( "VPORT" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTable" ) );
writeGroup( 0, QStringLiteral( "VPORT" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTableRecord" ) );
writeGroup( 100, QStringLiteral( "AcDbViewportTableRecord" ) );
writeGroup( 2, QStringLiteral( "*ACTIVE" ) );
writeGroup( 70, 0 ); // flags
writeGroup( 0, QgsPoint( 0.0, 0.0 ) ); // lower left
writeGroup( 1, QgsPoint( 1.0, 1.0 ) ); // upper right
writeGroup( 2, QgsPoint( 0.0, 0.0 ) ); // view center point
writeGroup( 3, QgsPoint( 0.0, 0.0 ) ); // snap base point
writeGroup( 4, QgsPoint( 1.0, 1.0 ) ); // snap spacing
writeGroup( 5, QgsPoint( 1.0, 1.0 ) ); // grid spacing
writeGroup( 6, QgsPoint( QgsWkbTypes::PointZ, 0.0, 0.0, 1.0 ) ); // view direction from target point
writeGroup( 7, QgsPoint( mExtent.center() ) ); // view target point
writeGroup( 40, mExtent.height() ); // view height
writeGroup( 41, mExtent.width() / mExtent.height() ); // view aspect ratio
writeGroup( 42, 50.0 ); // lens length
writeGroup( 43, 0.0 ); // front clipping plane
writeGroup( 44, 0.0 ); // back clipping plane
writeGroup( 50, 0.0 ); // snap rotation
writeGroup( 51, 0.0 ); // view twist angle
writeGroup( 71, 0 ); // view mode (0 = deactivates)
writeGroup( 72, 100 ); // circle zoom percent
writeGroup( 73, 1 ); // fast zoom setting
writeGroup( 74, 1 ); // UCSICON setting
writeGroup( 75, 0 ); // snapping off
writeGroup( 76, 0 ); // grid off
writeGroup( 77, 0 ); // snap style
writeGroup( 78, 0 ); // snap isopair
writeGroup( 281, 0 ); // render mode (0 = 2D optimized)
writeGroup( 65, 1 ); // value of UCSVP for this viewport
writeGroup( 100, QgsPoint( QgsWkbTypes::PointZ, 0.0, 0.0, 0.0 ) );// UCS origin
writeGroup( 101, QgsPoint( QgsWkbTypes::PointZ, 1.0, 0.0, 0.0 ) );// UCS x axis
writeGroup( 102, QgsPoint( QgsWkbTypes::PointZ, 0.0, 1.0, 0.0 ) );// UCS y axis
writeGroup( 79, 0 ); // Orthographic type of UCS (0 = UCS is not orthographic)
writeGroup( 146, 0.0 ); // Elevation
writeGroup( 70, 0 );
writeGroup( 0, QStringLiteral( "ENDTAB" ) );
// DIMSTYLE
writeGroup( 0, QStringLiteral( "TABLE" ) );
writeGroup( 2, QStringLiteral( "DIMSTYLE" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTable" ) );
writeGroup( 100, QStringLiteral( "AcDbDimStyleTable" ) );
writeGroup( 70, 0 );
writeGroup( 0, QStringLiteral( "ENDTAB" ) );
QSet<QString> layerNames;
const QList< QgsMapLayer * > layers = mMapSettings.layers();
for ( QgsMapLayer *ml : layers )
{
if ( !layerIsScaleBasedVisible( ml ) )
continue;
QgsVectorLayer *vl = qobject_cast<QgsVectorLayer *>( ml );
if ( !vl )
continue;
int attrIdx = mLayerNameAttribute.value( vl->id(), -1 );
if ( attrIdx < 0 )
{
layerNames << dxfLayerName( layerName( vl ) );
}
else
{
const QSet<QVariant> values = vl->uniqueValues( attrIdx );
for ( const QVariant &v : values )
{
layerNames << dxfLayerName( v.toString() );
}
}
}
// Layers
// TODO: iterate features of all layer to produce a data-defined layer list
writeGroup( 0, QStringLiteral( "TABLE" ) );
writeGroup( 2, QStringLiteral( "LAYER" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTable" ) );
writeGroup( 70, layerNames.size() + 1 );
writeGroup( 0, QStringLiteral( "LAYER" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTableRecord" ) );
writeGroup( 100, QStringLiteral( "AcDbLayerTableRecord" ) );
writeGroup( 2, QStringLiteral( "0" ) );
writeGroup( 70, 64 );
writeGroup( 62, 1 );
writeGroup( 6, QStringLiteral( "CONTINUOUS" ) );
writeHandle( 390, DXF_HANDPLOTSTYLE );
for ( const QString &layerName : qgis::as_const( layerNames ) )
{
writeGroup( 0, QStringLiteral( "LAYER" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTableRecord" ) );
writeGroup( 100, QStringLiteral( "AcDbLayerTableRecord" ) );
writeGroup( 2, layerName );
writeGroup( 70, 64 );
writeGroup( 62, 1 );
writeGroup( 6, QStringLiteral( "CONTINUOUS" ) );
writeHandle( 390, DXF_HANDPLOTSTYLE );
}
writeGroup( 0, QStringLiteral( "ENDTAB" ) );
// Text styles
writeGroup( 0, QStringLiteral( "TABLE" ) );
writeGroup( 2, QStringLiteral( "STYLE" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTable" ) );
writeGroup( 70, 1 );
// Provide only standard font for the moment
writeGroup( 0, QStringLiteral( "STYLE" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbSymbolTableRecord" ) );
writeGroup( 100, QStringLiteral( "AcDbTextStyleTableRecord" ) );
writeGroup( 2, QStringLiteral( "STANDARD" ) );
writeGroup( 70, 64 );
writeGroup( 40, 0.0 );
writeGroup( 41, 1.0 );
writeGroup( 50, 0.0 );
writeGroup( 71, 0 );
writeGroup( 42, 5.0 );
writeGroup( 3, QStringLiteral( "romans.shx" ) );
writeGroup( 4, QString() );
writeGroup( 0, QStringLiteral( "ENDTAB" ) );
endSection();
}
void QgsDxfExport::writeBlocks()
{
startSection();
writeGroup( 2, QStringLiteral( "BLOCKS" ) );
static const QStringList blockStrings = QStringList() << QStringLiteral( "*Model_Space" ) << QStringLiteral( "*Paper_Space" ) << QStringLiteral( "*Paper_Space0" );
for ( const QString &block : blockStrings )
{
writeGroup( 0, QStringLiteral( "BLOCK" ) );
writeHandle();
writeGroup( 330, QString::number( mBlockHandles[ block ], 16 ) );
writeGroup( 100, QStringLiteral( "AcDbEntity" ) );
writeGroup( 8, QStringLiteral( "0" ) );
writeGroup( 100, QStringLiteral( "AcDbBlockBegin" ) );
writeGroup( 2, block );
writeGroup( 70, 0 );
writeGroup( 0, QgsPoint( QgsWkbTypes::PointZ, 0.0, 0.0, 0.0 ) );
writeGroup( 3, block );
writeGroup( 1, QString() );
writeGroup( 0, QStringLiteral( "ENDBLK" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbEntity" ) );
writeGroup( 8, QStringLiteral( "0" ) );
writeGroup( 100, QStringLiteral( "AcDbBlockEnd" ) );
}
QgsRenderContext ct = renderContext();
// Iterate through all layers and get symbol layer pointers
QList< QPair< QgsSymbolLayer *, QgsSymbol * > > slList;
if ( mSymbologyExport != NoSymbology )
{
slList = symbolLayers( ct );
}
for ( const auto &symbolLayer : qgis::as_const( slList ) )
{
QgsMarkerSymbolLayer *ml = dynamic_cast< QgsMarkerSymbolLayer *>( symbolLayer.first );
if ( !ml )
continue;
// if point symbol layer and no data defined properties: write block
QgsSymbolRenderContext ctx( ct, QgsUnitTypes::RenderMapUnits, symbolLayer.second->opacity(), false, symbolLayer.second->renderHints(), nullptr );
// markers with data defined properties are inserted inline
if ( hasDataDefinedProperties( ml, symbolLayer.second ) )
{
continue;
}
QString block( QStringLiteral( "symbolLayer%1" ).arg( mBlockCounter++ ) );
mBlockHandle = QString::number( mBlockHandles[ block ], 16 );
writeGroup( 0, QStringLiteral( "BLOCK" ) );
writeHandle();
writeGroup( 330, mBlockHandle );
writeGroup( 100, QStringLiteral( "AcDbEntity" ) );
writeGroup( 8, QStringLiteral( "0" ) );
writeGroup( 100, QStringLiteral( "AcDbBlockBegin" ) );
writeGroup( 2, block );
writeGroup( 70, 0 );
// x/y/z coordinates of reference point
// todo: consider anchor point
// double size = ml->size();
// size *= mapUnitScaleFactor( mSymbologyScale, ml->sizeUnit(), mMapUnits );
writeGroup( 0, QgsPoint( QgsWkbTypes::PointZ, 0.0, 0.0, 0.0 ) );
writeGroup( 3, block );
writeGroup( 1, QString() );
// maplayer 0 -> block receives layer from INSERT statement
ml->writeDxf( *this, mapUnitScaleFactor( mSymbologyScale, ml->sizeUnit(), mMapUnits, ctx.renderContext().mapToPixel().mapUnitsPerPixel() ), QStringLiteral( "0" ), ctx );
writeGroup( 0, QStringLiteral( "ENDBLK" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbEntity" ) );
writeGroup( 8, QStringLiteral( "0" ) );
writeGroup( 100, QStringLiteral( "AcDbBlockEnd" ) );
mPointSymbolBlocks.insert( ml, block );
}
endSection();
}
void QgsDxfExport::writeEntities()
{
startSection();
writeGroup( 2, QStringLiteral( "ENTITIES" ) );
mBlockHandle = QString::number( mBlockHandles[ QStringLiteral( "*Model_Space" )], 16 );
// iterate through the maplayers
for ( DxfLayerJob *job : qgis::as_const( mJobs ) )
{
QgsSymbolRenderContext sctx( mRenderContext, QgsUnitTypes::RenderMillimeters, 1.0, false, QgsSymbol::RenderHints(), nullptr );
if ( mSymbologyExport == QgsDxfExport::SymbolLayerSymbology &&
( job->renderer->capabilities() & QgsFeatureRenderer::SymbolLevels ) &&
job->renderer->usingSymbolLevels() )
{
writeEntitiesSymbolLevels( job );
continue;
}
const QgsCoordinateTransform ct( job->crs, mMapSettings.destinationCrs(), mMapSettings.transformContext() );
QgsFeatureRequest request = QgsFeatureRequest().setSubsetOfAttributes( job->attributes, job->fields ).setExpressionContext( job->renderContext.expressionContext() );
request.setFilterRect( ct.transformBoundingBox( mExtent, QgsCoordinateTransform::ReverseTransform ) );
QgsFeatureIterator featureIt = job->featureSource.getFeatures( request );
QgsFeature fet;
while ( featureIt.nextFeature( fet ) )
{
mRenderContext.expressionContext().setFeature( fet );
QString lName( dxfLayerName( job->splitLayerAttribute.isNull() ? job->layerTitle : fet.attribute( job->splitLayerAttribute ).toString() ) );
sctx.setFeature( &fet );
if ( !job->renderer->willRenderFeature( fet, mRenderContext ) )
continue;
if ( mSymbologyExport == NoSymbology )
{
addFeature( sctx, ct, lName, nullptr, nullptr ); // no symbology at all
}
else
{
const QgsSymbolList symbolList = job->renderer->symbolsForFeature( fet, mRenderContext );
bool hasSymbology = symbolList.size() > 0;
if ( hasSymbology && mSymbologyExport == QgsDxfExport::SymbolLayerSymbology ) // symbol layer symbology, but layer does not use symbol levels
{
for ( QgsSymbol *symbol : symbolList )
{
const QgsSymbolLayerList symbolLayers = symbol->symbolLayers();
for ( QgsSymbolLayer *symbolLayer : symbolLayers )
{
if ( !symbolLayer )
continue;
bool isGeometryGenerator = ( symbolLayer->layerType() == QLatin1String( "GeometryGenerator" ) );
if ( isGeometryGenerator )
{
addGeometryGeneratorSymbolLayer( sctx, ct, lName, symbolLayer, true );
}
else
{
addFeature( sctx, ct, lName, symbolLayer, symbol );
}
}
}
}
else if ( hasSymbology )
{
// take first symbollayer from first symbol
QgsSymbol *s = symbolList.first();
if ( !s || s->symbolLayerCount() < 1 )
{
continue;
}
if ( s->symbolLayer( 0 )->layerType() == QLatin1String( "GeometryGenerator" ) )
{
addGeometryGeneratorSymbolLayer( sctx, ct, lName, s->symbolLayer( 0 ), false );
}
else
{
addFeature( sctx, ct, lName, s->symbolLayer( 0 ), s );
}
}
if ( job->labelProvider )
{
job->labelProvider->registerFeature( fet, mRenderContext );
Q_NOWARN_DEPRECATED_PUSH
registerDxfLayer( job->featureSource.id(), fet.id(), lName );
Q_NOWARN_DEPRECATED_POP
}
else if ( job->ruleBasedLabelProvider )
{
job->ruleBasedLabelProvider->registerFeature( fet, mRenderContext );
Q_NOWARN_DEPRECATED_PUSH
registerDxfLayer( job->featureSource.id(), fet.id(), lName );
Q_NOWARN_DEPRECATED_POP
}
}
}
}
QImage image( 10, 10, QImage::Format_ARGB32_Premultiplied );
image.setDotsPerMeterX( 96 / 25.4 * 1000 );
image.setDotsPerMeterY( 96 / 25.4 * 1000 );
QPainter painter( &image );
mRenderContext.setPainter( &painter );
mRenderContext.labelingEngine()->run( mRenderContext );
endSection();
}
void QgsDxfExport::prepareRenderers()
{
Q_ASSERT( mJobs.empty() ); // If this fails, stopRenderers() was not called after the last job
mRenderContext = QgsRenderContext();
mRenderContext.setRendererScale( mSymbologyScale );
mRenderContext.setExtent( mExtent );
mRenderContext.setScaleFactor( 96.0 / 25.4 );
mRenderContext.setMapToPixel( QgsMapToPixel( 1.0 / mFactor, mExtent.center().x(), mExtent.center().y(), mExtent.width() * mFactor,
mExtent.height() * mFactor, 0 ) );
mRenderContext.expressionContext().appendScope( QgsExpressionContextUtils::projectScope( QgsProject::instance() ) );
mRenderContext.expressionContext().appendScope( QgsExpressionContextUtils::globalScope() );
mRenderContext.expressionContext().appendScope( QgsExpressionContextUtils::mapSettingsScope( mMapSettings ) );
mLabelingEngine = qgis::make_unique<QgsDefaultLabelingEngine>();
mLabelingEngine->setMapSettings( mMapSettings );
mRenderContext.setLabelingEngine( mLabelingEngine.get() );
const QList< QgsMapLayer * > layers = mMapSettings.layers();
for ( QgsMapLayer *ml : layers )
{
QgsVectorLayer *vl = qobject_cast<QgsVectorLayer *>( ml );
if ( !vl )
continue;
if ( !vl->renderer() )
continue;
if ( !layerIsScaleBasedVisible( vl ) )
continue;
QString splitLayerAttribute;
int splitLayerAttributeIndex = mLayerNameAttribute.value( vl->id(), -1 );
const QgsFields fields = vl->fields();
if ( splitLayerAttributeIndex >= 0 && splitLayerAttributeIndex < fields.size() )
splitLayerAttribute = fields.at( splitLayerAttributeIndex ).name();
DxfLayerJob *job = new DxfLayerJob( vl, mMapSettings.layerStyleOverrides().value( vl->id() ), mRenderContext, this, splitLayerAttribute );
mJobs.append( job );
}
}
void QgsDxfExport::writeEntitiesSymbolLevels( DxfLayerJob *job )
{
QHash< QgsSymbol *, QList<QgsFeature> > features;
QgsRenderContext ctx = renderContext();
const QList<QgsExpressionContextScope *> scopes = job->renderContext.expressionContext().scopes();
for ( QgsExpressionContextScope *scope : scopes )
ctx.expressionContext().appendScope( new QgsExpressionContextScope( *scope ) );
QgsSymbolRenderContext sctx( ctx, QgsUnitTypes::RenderMillimeters, 1.0, false, QgsSymbol::RenderHints(), nullptr );
// get iterator
QgsFeatureRequest req;
req.setSubsetOfAttributes( job->renderer->usedAttributes( ctx ), job->featureSource.fields() );
QgsCoordinateTransform ct( mMapSettings.destinationCrs(), job->crs, mMapSettings.transformContext() );
req.setFilterRect( ct.transform( mExtent ) );
QgsFeatureIterator fit = job->featureSource.getFeatures( req );
// fetch features
QgsFeature fet;
QgsSymbol *featureSymbol = nullptr;
while ( fit.nextFeature( fet ) )
{
ctx.expressionContext().setFeature( fet );
featureSymbol = job->renderer->symbolForFeature( fet, ctx );
if ( !featureSymbol )
{
continue;
}
QHash< QgsSymbol *, QList<QgsFeature> >::iterator it = features.find( featureSymbol );
if ( it == features.end() )
{
it = features.insert( featureSymbol, QList<QgsFeature>() );
}
it.value().append( fet );
}
// find out order
QgsSymbolLevelOrder levels;
const QgsSymbolList symbols = job->renderer->symbols( ctx );
for ( QgsSymbol *symbol : symbols )
{
for ( int j = 0; j < symbol->symbolLayerCount(); j++ )
{
int level = symbol->symbolLayer( j )->renderingPass();
if ( level < 0 || level >= 1000 ) // ignore invalid levels
continue;
QgsSymbolLevelItem item( symbol, j );
while ( level >= levels.count() ) // append new empty levels
levels.append( QgsSymbolLevel() );
levels[level].append( item );
}
}
// export symbol layers and symbology
for ( const QgsSymbolLevel &level : qgis::as_const( levels ) )
{
for ( const QgsSymbolLevelItem &item : level )
{
QHash< QgsSymbol *, QList<QgsFeature> >::iterator levelIt = features.find( item.symbol() );
if ( levelIt == features.end() )
{
continue;
}
int llayer = item.layer();
const QList<QgsFeature> &featureList = levelIt.value();
for ( const QgsFeature &feature : featureList )
{
sctx.setFeature( &feature );
addFeature( sctx, ct, job->layerName, levelIt.key()->symbolLayer( llayer ), levelIt.key() );
}
}
}
}
void QgsDxfExport::stopRenderers()
{
qDeleteAll( mJobs );
mJobs.clear();
}
void QgsDxfExport::writeEndFile()
{
mTextStream << DXF_TRAILER;
writeGroup( 0, QStringLiteral( "EOF" ) );
}
void QgsDxfExport::startSection()
{
writeGroup( 0, QStringLiteral( "SECTION" ) );
}
void QgsDxfExport::endSection()
{
writeGroup( 0, QStringLiteral( "ENDSEC" ) );
}
void QgsDxfExport::writePoint( const QgsPoint &pt, const QString &layer, const QColor &color, QgsSymbolRenderContext &ctx, const QgsSymbolLayer *symbolLayer, const QgsSymbol *symbol, double angle )
{
#if 0
// debug: draw rectangle for debugging
const QgsMarkerSymbolLayer *msl = dynamic_cast< const QgsMarkerSymbolLayer * >( symbolLayer );
if ( msl )
{
double halfSize = msl->size() * mapUnitScaleFactor( mSymbologyScale,
msl->sizeUnit(), mMapUnits ) / 2.0;
writeGroup( 0, "SOLID" );
writeGroup( 8, layer );
writeGroup( 62, 1 );
writeGroup( 0, QgsPoint( QgsWkbTypes::PointZ, pt.x() - halfSize, pt.y() - halfSize ) );
writeGroup( 1, QgsPoint( QgsWkbTypes::PointZ, pt.x() + halfSize, pt.y() - halfSize ) );
writeGroup( 2, QgsPoint( QgsWkbTypes::PointZ, pt.x() - halfSize, pt.y() + halfSize ) );
writeGroup( 3, QgsPoint( QgsWkbTypes::PointZ, pt.x() + halfSize, pt.y() + halfSize ) );
}
#endif // 0
// insert block or write point directly?
QHash< const QgsSymbolLayer *, QString >::const_iterator blockIt = mPointSymbolBlocks.constFind( symbolLayer );
if ( !symbolLayer || blockIt == mPointSymbolBlocks.constEnd() )
{
// write symbol directly here
const QgsMarkerSymbolLayer *msl = dynamic_cast< const QgsMarkerSymbolLayer * >( symbolLayer );
if ( msl && symbol )
{
if ( msl->writeDxf( *this, mapUnitScaleFactor( mSymbologyScale, msl->sizeUnit(), mMapUnits, ctx.renderContext().mapToPixel().mapUnitsPerPixel() ), layer, ctx, QPointF( pt.x(), pt.y() ) ) )
{
return;
}
}
writePoint( layer, color, pt ); // write default point symbol
}
else
{
// insert block reference
writeGroup( 0, QStringLiteral( "INSERT" ) );
writeHandle();
writeGroup( 100, QStringLiteral( "AcDbEntity" ) );
writeGroup( 100, QStringLiteral( "AcDbBlockReference" ) );
writeGroup( 8, layer );
writeGroup( 2, blockIt.value() ); // Block name
writeGroup( 50, angle ); // angle
writeGroup( 0, pt ); // Insertion point (in OCS)
}
}
void QgsDxfExport::writePolyline( const QgsPointSequence &line, const QString &layer, const QString &lineStyleName, const QColor &color, double width )
{
int n = line.size();
if ( n == 0 )
{
QgsDebugMsg( QStringLiteral( "writePolyline: empty line layer=%1 lineStyleName=%2" ).arg( layer, lineStyleName ) );
return;
}
if ( n < 2 )
{
QgsDebugMsg( QStringLiteral( "writePolyline: line too short layer=%1 lineStyleName=%2" ).arg( layer, lineStyleName ) );
return;
}
if ( mForce2d || !line.at( 0 ).is3D() )
{
bool polygon = line[0] == line[ line.size() - 1 ];
if ( polygon )
--n;
writeGroup( 0, QStringLiteral( "LWPOLYLINE" ) );
writeHandle();
writeGroup( 8, layer );
writeGroup( 100, QStringLiteral( "AcDbEntity" ) );
writeGroup( 100, QStringLiteral( "AcDbPolyline" ) );
writeGroup( 6, lineStyleName );
writeGroup( color );
writeGroup( 90, n );
writeGroup( 70, polygon ? 1 : 0 );
writeGroup( 43, width );
for ( int i = 0; i < n; i++ )
writeGroup( 0, line[i] );
}
else
{
writeGroup( 0, QStringLiteral( "POLYLINE" ) );
int plHandle = writeHandle();
writeGroup( 330, mBlockHandle );
writeGroup( 100, QStringLiteral( "AcDbEntity" ) );
writeGroup( 8, layer );
writeGroup( 6, lineStyleName );
writeGroup( color );
writeGroup( 100, QStringLiteral( "AcDb3dPolyline" ) );
writeGroup( 0, QgsPoint( QgsWkbTypes::PointZ, 0.0, 0.0, 0.0 ) );
writeGroup( 70, 8 );
for ( int i = 0; i < n; i++ )
{
writeGroup( 0, QStringLiteral( "VERTEX" ) );
writeHandle();
writeGroup( 330, plHandle );
writeGroup( 100, QStringLiteral( "AcDbEntity" ) );
writeGroup( 8, layer );
writeGroup( color );
writeGroup( 100, QStringLiteral( "AcDbVertex" ) );
writeGroup( 100, QStringLiteral( "AcDb3dPolylineVertex" ) );
writeGroup( 0, line[i] );
writeGroup( 70, 32 );
}