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dxf export:
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* fix handing of areas with holes when exporting SVGs
* fix block, hatch and polyline ownership
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@jef-n
jef-n committed Jun 16, 2015
1 parent 03c61b3 commit 2798ab0
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Showing 4 changed files with 100 additions and 138 deletions.
144 changes: 58 additions & 86 deletions src/core/dxf/qgsdxfexport.cpp
View file
Expand Up @@ -359,12 +359,10 @@ QgsDxfExport::QgsDxfExport()
, mSymbolLayerCounter( 0 )
, mNextHandleId( DXF_HANDSEED )
, mBlockCounter( 0 )
, mModelSpaceBR( 0 )
{
}

QgsDxfExport::QgsDxfExport( const QgsDxfExport& dxfExport )
: mModelSpaceBR( 0 )
{
*this = dxfExport;
}
Expand Down Expand Up @@ -588,23 +586,15 @@ void QgsDxfExport::writeTables()

writeGroup( 100, "AcDbSymbolTable" );
writeGroup( 70, 0 );
writeGroup( 0, "BLOCK_RECORD" );
mModelSpaceBR = writeHandle();
writeGroup( 100, "AcDbSymbolTableRecord" );
writeGroup( 100, "AcDbBlockTableRecord" );
writeGroup( 2, "*Model_Space" );

writeGroup( 0, "BLOCK_RECORD" );
writeHandle();
writeGroup( 100, "AcDbSymbolTableRecord" );
writeGroup( 100, "AcDbBlockTableRecord" );
writeGroup( 2, "*Paper_Space" );

writeGroup( 0, "BLOCK_RECORD" );
writeHandle();
writeGroup( 100, "AcDbSymbolTableRecord" );
writeGroup( 100, "AcDbBlockTableRecord" );
writeGroup( 2, "*Paper_Space0" );
foreach ( QString block, QStringList() << "*Model_Space" << "*Paper_Space" << "*Paper_Space0" )
{
writeGroup( 0, "BLOCK_RECORD" );
mBlockHandles.insert( block, writeHandle() );
writeGroup( 100, "AcDbSymbolTableRecord" );
writeGroup( 100, "AcDbBlockTableRecord" );
writeGroup( 2, block );
}

int i = 0;
slIt = slList.constBegin();
Expand All @@ -617,11 +607,12 @@ void QgsDxfExport::writeTables()
if ( hasDataDefinedProperties( ml, slIt->second ) )
continue;

QString name = QString( "symbolLayer%1" ).arg( i++ );
writeGroup( 0, "BLOCK_RECORD" );
writeHandle();
mBlockHandles.insert( name, writeHandle() );
writeGroup( 100, "AcDbSymbolTableRecord" );
writeGroup( 100, "AcDbBlockTableRecord" );
writeGroup( 2, QString( "symbolLayer%1" ).arg( i++ ) );
writeGroup( 2, name );
}

writeGroup( 0, "ENDTAB" );
Expand Down Expand Up @@ -802,53 +793,25 @@ void QgsDxfExport::writeBlocks()
startSection();
writeGroup( 2, "BLOCKS" );

writeGroup( 0, "BLOCK" );
writeHandle();
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, "0" );
writeGroup( 100, "AcDbBlockBegin" );
writeGroup( 2, "*Model_Space" );
writeGroup( 70, 0 );
writeGroup( 0, QgsPoint( 0.0, 0.0 ) );
writeGroup( 3, "*Model_Space" );
writeGroup( 1, "" );
writeGroup( 0, "ENDBLK" );
writeHandle();
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, "0" );
writeGroup( 100, "AcDbBlockEnd" );

writeGroup( 0, "BLOCK" );
writeHandle();
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, "0" );
writeGroup( 100, "AcDbBlockBegin" );
writeGroup( 2, "*Paper_Space" );
writeGroup( 70, 0 );
writeGroup( 0, QgsPoint( 0.0, 0.0 ) );
writeGroup( 3, "*Paper_Space" );
writeGroup( 1, "" );
writeGroup( 0, "ENDBLK" );
writeHandle();
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, "0" );
writeGroup( 100, "AcDbBlockEnd" );

writeGroup( 0, "BLOCK" );
writeHandle();
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, "0" );
writeGroup( 100, "AcDbBlockBegin" );
writeGroup( 2, "*Paper_Space0" );
writeGroup( 70, 0 );
writeGroup( 0, QgsPoint( 0.0, 0.0 ) );
writeGroup( 3, "*Paper_Space0" );
writeGroup( 1, "" );
writeGroup( 0, "ENDBLK" );
writeHandle();
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, "0" );
writeGroup( 100, "AcDbBlockEnd" );
foreach ( QString block, QStringList() << "*Model_Space" << "*Paper_Space" << "*Paper_Space0" )
{
writeGroup( 0, "BLOCK" );
writeHandle();
writeGroup( 330, QString( "%1" ).arg( mBlockHandles[ block ], 0, 16 ) );
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, "0" );
writeGroup( 100, "AcDbBlockBegin" );
writeGroup( 2, block );
writeGroup( 70, 0 );
writeGroup( 0, QgsPoint( 0.0, 0.0 ) );
writeGroup( 3, block );
writeGroup( 1, "" );
writeGroup( 0, "ENDBLK" );
writeHandle();
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, "0" );
writeGroup( 100, "AcDbBlockEnd" );
}

// Iterate through all layers and get symbol layer pointers
QList< QPair< QgsSymbolLayerV2*, QgsSymbolV2* > > slList;
Expand Down Expand Up @@ -876,33 +839,35 @@ void QgsDxfExport::writeBlocks()
// ml->stopRender( ctx );
}

QString block( QString( "symbolLayer%1" ).arg( mBlockCounter++ ) );
mBlockHandle = QString( "%1" ).arg( mBlockHandles[ block ], 0, 16 );

writeGroup( 0, "BLOCK" );
writeHandle();
writeGroup( 330, mBlockHandle );
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, "0" );
writeGroup( 100, "AcDbBlockBegin" );

QString blockName = QString( "symbolLayer%1" ).arg( mBlockCounter++ );
writeGroup( 2, blockName );
writeGroup( 2, block );
writeGroup( 70, 0 );
writeGroup( 1, "" );

// x/y/z coordinates of reference point
// todo: consider anchor point
// double size = ml->size();
// size *= mapUnitScaleFactor( mSymbologyScaleDenominator, ml->sizeUnit(), mMapUnits );
writeGroup( 0, QgsPoint( 0.0, 0.0 ) );
writeGroup( 3, blockName );
writeGroup( 3, block );
writeGroup( 1, "" );

ml->writeDxf( *this, mapUnitScaleFactor( mSymbologyScaleDenominator, ml->sizeUnit(), mMapUnits ), "0", &ctx, 0 ); // maplayer 0 -> block receives layer from INSERT statement

writeGroup( 0, "ENDBLK" );
writeHandle();
writeGroup( 100, "AcDbEntity" );
writeGroup( 100, "AcDbBlockEnd" );
writeGroup( 8, "0" );
writeGroup( 100, "AcDbBlockEnd" );

mPointSymbolBlocks.insert( ml, blockName );
mPointSymbolBlocks.insert( ml, block );
ml->stopRender( ctx );
}
endSection();
Expand All @@ -913,6 +878,8 @@ void QgsDxfExport::writeEntities()
startSection();
writeGroup( 2, "ENTITIES" );

mBlockHandle = QString( "%1" ).arg( mBlockHandles[ "*Model_Space" ], 0, 16 );

// label engine
QgsDxfPalLabeling labelEngine( this, mExtent.isEmpty() ? dxfExtent() : mExtent, mSymbologyScaleDenominator, mMapUnits );
QgsRenderContext& ctx = labelEngine.renderContext();
Expand Down Expand Up @@ -3340,12 +3307,22 @@ void QgsDxfExport::writePoint( const QgsPoint& pt, const QString& layer, QColor

void QgsDxfExport::writePolyline( const QgsPolyline& line, const QString& layer, const QString& lineStyleName, QColor color, double width )
{
if ( line.size() == 0 )
int n = line.size();
if ( n == 0 )
{
QgsDebugMsg( QString( "writePolyline: empty line layer=%1 lineStyleName=%2" ).arg( layer ).arg( lineStyleName ) );
return;
}

bool polygon = line[0] == line[ line.size() - 1 ];
if ( polygon )
--n;
if ( n < 2 )
{
QgsDebugMsg( QString( "writePolyline: line too short layer=%1 lineStyleName=%2" ).arg( layer ).arg( lineStyleName ) );
return;
}

writeGroup( 0, "LWPOLYLINE" );
writeHandle();
writeGroup( 8, layer );
Expand All @@ -3354,11 +3331,6 @@ void QgsDxfExport::writePolyline( const QgsPolyline& line, const QString& layer,
writeGroup( 6, lineStyleName );
writeGroup( color );

bool polygon = line[0] == line[ line.size() - 1 ];
int n = line.size();
if ( polygon )
--n;

writeGroup( 90, n );
writeGroup( 70, polygon ? 1 : 0 );
writeGroup( 43, width );
Expand All @@ -3371,7 +3343,7 @@ void QgsDxfExport::writePolygon( const QgsPolygon& polygon, const QString& layer
{
writeGroup( 0, "HATCH" ); // Entity type
writeHandle();
writeGroup( 330, mModelSpaceBR );
writeGroup( 330, mBlockHandle );
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, layer ); // Layer name
writeGroup( color ); // Color
Expand Down Expand Up @@ -3429,19 +3401,19 @@ void QgsDxfExport::writeFilledCircle( const QString &layer, QColor color, const
{
writeGroup( 0, "HATCH" ); // Entity type
writeHandle();
writeGroup( 330, mModelSpaceBR );
writeGroup( 330, mBlockHandle );
writeGroup( 100, "AcDbEntity" );
writeGroup( 8, layer ); // Layer name
writeGroup( color ); // Color (0 by block, 256 by layer)
writeGroup( 100, "AcDbHatch" );

writeGroup( 8, layer ); // Layer name
writeGroup( 0, QgsPoint( 0, 0 ), 0.0 ); // Elevation point (in OCS)
writeGroup( 0, QgsPoint( 0, 0 ) ); // Elevation point (in OCS)
writeGroup( 200, QgsPoint( 0, 0 ), 1.0 );

writeGroup( 2, "SOLID" ); // Hatch pattern name
writeGroup( 70, 1 ); // Solid fill flag (solid fill = 1; pattern fill = 0)
writeGroup( 71, 0 ); // Associativity flag (associative = 1; non-associative = 0)

writeGroup( color ); // Color (0 by block, 256 by layer)

writeGroup( 91, 1 ); // Number of boundary paths (loops)

Expand Down Expand Up @@ -3469,7 +3441,7 @@ void QgsDxfExport::writeCircle( const QString& layer, QColor color, const QgsPoi
{
writeGroup( 0, "LWPOLYLINE" );
writeHandle();
writeGroup( 330, mModelSpaceBR );
writeGroup( 330, mBlockHandle );
writeGroup( 8, layer );
writeGroup( 100, "AcDbEntity" );
writeGroup( 100, "AcDbPolyline" );
Expand Down
3 changes: 2 additions & 1 deletion src/core/dxf/qgsdxfexport.h
View file
Expand Up @@ -173,7 +173,8 @@ class CORE_EXPORT QgsDxfExport
static QString lineNameFromPenStyle( Qt::PenStyle style );
bool layerIsScaleBasedVisible( const QgsMapLayer *layer ) const;

int mModelSpaceBR;
QHash<QString, int> mBlockHandles;
QString mBlockHandle;
};

#endif // QGSDXFEXPORT_H

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