void QgsPointDistanceRenderer::drawGroup( const ClusteredGroup& group, QgsRenderContext& context )
{
//calculate centroid of all points, this will be center of group
QgsMultiPointV2* groupMultiPoint = new QgsMultiPointV2();
Q_FOREACH ( const GroupedFeature& f, group )
{
groupMultiPoint->addGeometry( f.feature.geometry().geometry()->clone() );
}
QgsAbstractGeometryV2* QgsGeometryImport::fromMultiPoint( const QgsMultiPoint& multipoint )
{
QgsMultiPointV2* mp = new QgsMultiPointV2();
QgsMultiPoint::const_iterator ptIt = multipoint.constBegin();
for ( ; ptIt != multipoint.constEnd(); ++ptIt )
{
QgsPointV2* pt = new QgsPointV2( ptIt->x(), ptIt->y() );
mp->addGeometry( pt );
}
return mp;
}
QgsAbstractGeometry* QgsCurve::boundary() const
{
if ( isEmpty() )
return nullptr;
if ( isClosed() )
return nullptr;
QgsMultiPointV2* multiPoint = new QgsMultiPointV2();
multiPoint->addGeometry( new QgsPointV2( startPoint() ) );
multiPoint->addGeometry( new QgsPointV2( endPoint() ) );
return multiPoint;
}
QgsAbstractGeometryV2* QgsMultiCurveV2::boundary() const
{
QgsMultiPointV2* multiPoint = new QgsMultiPointV2();
for ( int i = 0; i < mGeometries.size(); ++i )
{
if ( QgsCurveV2* curve = dynamic_cast<QgsCurveV2*>( mGeometries.at( i ) ) )
{
if ( !curve->isClosed() )
{
multiPoint->addGeometry( new QgsPointV2( curve->startPoint() ) );
multiPoint->addGeometry( new QgsPointV2( curve->endPoint() ) );
}
}
}
if ( multiPoint->numGeometries() == 0 )
{
delete multiPoint;
return nullptr;
}
return multiPoint;
}
void QgsPointDisplacementRenderer::drawGroup( const DisplacementGroup& group, QgsRenderContext& context )
{
const QgsFeature& feature = group.begin().value().first;
bool selected = mSelectedFeatures.contains( feature.id() ); // maybe we should highlight individual features instead of the whole group?
//get list of labels and symbols
QStringList labelAttributeList;
QList<QgsMarkerSymbolV2*> symbolList;
QgsMultiPointV2* groupMultiPoint = new QgsMultiPointV2();
for ( DisplacementGroup::const_iterator attIt = group.constBegin(); attIt != group.constEnd(); ++attIt )
{
labelAttributeList << ( mDrawLabels ? getLabel( attIt.value().first ) : QString() );
symbolList << dynamic_cast<QgsMarkerSymbolV2*>( attIt.value().second );
groupMultiPoint->addGeometry( attIt.value().first.constGeometry()->geometry()->clone() );
}
//calculate centroid of all points, this will be center of group
QgsGeometry groupGeom( groupMultiPoint );
QgsGeometry* centroid = groupGeom.centroid();
QPointF pt;
_getPoint( pt, context, centroid->asWkb() );
delete centroid;
//calculate max diagonal size from all symbols in group
double diagonal = 0;
Q_FOREACH ( QgsMarkerSymbolV2* symbol, symbolList )
{
if ( symbol )
{
diagonal = qMax( diagonal, QgsSymbolLayerV2Utils::convertToPainterUnits( context,
M_SQRT2 * symbol->size(),
symbol->outputUnit(), symbol->mapUnitScale() ) );
}
}
QgsSymbolV2RenderContext symbolContext( context, QgsSymbolV2::MM, 1.0, selected );
QList<QPointF> symbolPositions;
QList<QPointF> labelPositions;
double circleRadius = -1.0;
calculateSymbolAndLabelPositions( symbolContext, pt, symbolList.size(), diagonal, symbolPositions, labelPositions, circleRadius );
//draw Circle
if ( circleRadius > 0 )
drawCircle( circleRadius, symbolContext, pt, symbolList.size() );
//draw mid point
if ( labelAttributeList.size() > 1 )
{
if ( mCenterSymbol )
{
mCenterSymbol->renderPoint( pt, &feature, context, -1, selected );
}
else
{
context.painter()->drawRect( QRectF( pt.x() - symbolContext.outputLineWidth( 1 ), pt.y() - symbolContext.outputLineWidth( 1 ), symbolContext.outputLineWidth( 2 ), symbolContext.outputLineWidth( 2 ) ) );
}
}
//draw symbols on the circle
drawSymbols( feature, context, symbolList, symbolPositions, selected );
//and also the labels
drawLabels( pt, symbolContext, labelPositions, labelAttributeList );
}
void QgsMapToolAddFeature::cadCanvasReleaseEvent( QgsMapMouseEvent* e )
{
QgsVectorLayer* vlayer = currentVectorLayer();
if ( !vlayer )
{
notifyNotVectorLayer();
return;
}
QgsWkbTypes::Type layerWKBType = vlayer->wkbType();
QgsVectorDataProvider* provider = vlayer->dataProvider();
if ( !( provider->capabilities() & QgsVectorDataProvider::AddFeatures ) )
{
emit messageEmitted( tr( "The data provider for this layer does not support the addition of features." ), QgsMessageBar::WARNING );
return;
}
if ( !vlayer->isEditable() )
{
notifyNotEditableLayer();
return;
}
// POINT CAPTURING
if ( mode() == CapturePoint )
{
if ( e->button() != Qt::LeftButton )
return;
//check we only use this tool for point/multipoint layers
if ( vlayer->geometryType() != QgsWkbTypes::PointGeometry && mCheckGeometryType )
{
emit messageEmitted( tr( "Wrong editing tool, cannot apply the 'capture point' tool on this vector layer" ), QgsMessageBar::WARNING );
return;
}
QgsPoint savePoint; //point in layer coordinates
try
{
QgsPointV2 fetchPoint;
int res;
res = fetchLayerPoint( e->mapPointMatch(), fetchPoint );
if ( res == 0 )
{
savePoint = QgsPoint( fetchPoint.x(), fetchPoint.y() );
}
else
{
savePoint = toLayerCoordinates( vlayer, e->mapPoint() );
}
QgsDebugMsg( "savePoint = " + savePoint.toString() );
}
catch ( QgsCsException &cse )
{
Q_UNUSED( cse );
emit messageEmitted( tr( "Cannot transform the point to the layers coordinate system" ), QgsMessageBar::WARNING );
return;
}
//only do the rest for provider with feature addition support
//note that for the grass provider, this will return false since
//grass provider has its own mechanism of feature addition
if ( provider->capabilities() & QgsVectorDataProvider::AddFeatures )
{
QgsFeature f( vlayer->fields(), 0 );
QgsGeometry g;
if ( layerWKBType == QgsWkbTypes::Point )
{
g = QgsGeometry::fromPoint( savePoint );
}
else if ( layerWKBType == QgsWkbTypes::Point25D )
{
g = QgsGeometry( new QgsPointV2( QgsWkbTypes::PointZ, savePoint.x(), savePoint.y(), 0.0 ) );
}
else if ( layerWKBType == QgsWkbTypes::MultiPoint )
{
g = QgsGeometry::fromMultiPoint( QgsMultiPoint() << savePoint );
}
else if ( layerWKBType == QgsWkbTypes::MultiPoint25D )
{
QgsMultiPointV2* mp = new QgsMultiPointV2();
mp->addGeometry( new QgsPointV2( QgsWkbTypes::PointZ, savePoint.x(), savePoint.y(), 0.0 ) );
g = QgsGeometry( mp );
}
else
{
// if layer supports more types (mCheckGeometryType is false)
g = QgsGeometry::fromPoint( savePoint );
}
f.setGeometry( g );
f.setValid( true );
addFeature( vlayer, &f, false );
vlayer->triggerRepaint();
}
}
// LINE AND POLYGON CAPTURING
else if ( mode() == CaptureLine || mode() == CapturePolygon )
{
//check we only use the line tool for line/multiline layers
if ( mode() == CaptureLine && vlayer->geometryType() != QgsWkbTypes::LineGeometry && mCheckGeometryType )
{
emit messageEmitted( tr( "Wrong editing tool, cannot apply the 'capture line' tool on this vector layer" ), QgsMessageBar::WARNING );
return;
}
//check we only use the polygon tool for polygon/multipolygon layers
if ( mode() == CapturePolygon && vlayer->geometryType() != QgsWkbTypes::PolygonGeometry && mCheckGeometryType )
{
emit messageEmitted( tr( "Wrong editing tool, cannot apply the 'capture polygon' tool on this vector layer" ), QgsMessageBar::WARNING );
return;
}
//add point to list and to rubber band
if ( e->button() == Qt::LeftButton )
{
int error = addVertex( e->mapPoint(), e->mapPointMatch() );
if ( error == 1 )
{
//current layer is not a vector layer
return;
}
else if ( error == 2 )
{
//problem with coordinate transformation
emit messageEmitted( tr( "Cannot transform the point to the layers coordinate system" ), QgsMessageBar::WARNING );
return;
}
startCapturing();
}
else if ( e->button() == Qt::RightButton )
{
// End of string
deleteTempRubberBand();
//lines: bail out if there are not at least two vertices
if ( mode() == CaptureLine && size() < 2 )
{
stopCapturing();
return;
}
//polygons: bail out if there are not at least two vertices
if ( mode() == CapturePolygon && size() < 3 )
{
stopCapturing();
return;
}
if ( mode() == CapturePolygon )
{
closePolygon();
}
//create QgsFeature with wkb representation
QScopedPointer< QgsFeature > f( new QgsFeature( vlayer->fields(), 0 ) );
//does compoundcurve contain circular strings?
//does provider support circular strings?
bool hasCurvedSegments = captureCurve()->hasCurvedSegments();
bool providerSupportsCurvedSegments = vlayer->dataProvider()->capabilities() & QgsVectorDataProvider::CircularGeometries;
QgsCurve* curveToAdd = nullptr;
if ( hasCurvedSegments && providerSupportsCurvedSegments )
{
curveToAdd = captureCurve()->clone();
}
else
{
curveToAdd = captureCurve()->curveToLine();
}
if ( mode() == CaptureLine )
{
QgsGeometry* g = new QgsGeometry( curveToAdd );
f->setGeometry( *g );
delete g;
}
else
{
QgsCurvePolygon* poly = nullptr;
if ( hasCurvedSegments && providerSupportsCurvedSegments )
{
poly = new QgsCurvePolygon();
}
else
{
poly = new QgsPolygonV2();
}
poly->setExteriorRing( curveToAdd );
QgsGeometry* g = new QgsGeometry( poly );
f->setGeometry( *g );
delete g;
QgsGeometry featGeom = f->geometry();
int avoidIntersectionsReturn = featGeom.avoidIntersections();
f->setGeometry( featGeom );
if ( avoidIntersectionsReturn == 1 )
{
//not a polygon type. Impossible to get there
}
if ( f->geometry().isGeosEmpty() ) //avoid intersection might have removed the whole geometry
{
emit messageEmitted( tr( "The feature cannot be added because it's geometry collapsed due to intersection avoidance" ), QgsMessageBar::CRITICAL );
stopCapturing();
return;
}
}
f->setValid( true );
if ( addFeature( vlayer, f.data(), false ) )
{
//add points to other features to keep topology up-to-date
int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );
//use always topological editing for avoidIntersection.
//Otherwise, no way to guarantee the geometries don't have a small gap in between.
QStringList intersectionLayers = QgsProject::instance()->readListEntry( "Digitizing", "/AvoidIntersectionsList" );
bool avoidIntersection = !intersectionLayers.isEmpty();
if ( avoidIntersection ) //try to add topological points also to background layers
{
QStringList::const_iterator lIt = intersectionLayers.constBegin();
for ( ; lIt != intersectionLayers.constEnd(); ++lIt )
{
QgsMapLayer* ml = QgsMapLayerRegistry::instance()->mapLayer( *lIt );
QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( ml );
//can only add topological points if background layer is editable...
if ( vl && vl->geometryType() == QgsWkbTypes::PolygonGeometry && vl->isEditable() )
{
vl->addTopologicalPoints( f->geometry() );
}
}
}
else if ( topologicalEditing )
{
vlayer->addTopologicalPoints( f->geometry() );
}
}
stopCapturing();
}
}
}