bool QgsMeshLayer::readXml( const QDomNode &layer_node, QgsReadWriteContext &context )
{
Q_UNUSED( context );
QgsDebugMsgLevel( QStringLiteral( "Datasource in QgsMeshLayer::readXml: %1" ).arg( mDataSource.toLocal8Bit().data() ), 3 );
//process provider key
QDomNode pkeyNode = layer_node.namedItem( QStringLiteral( "provider" ) );
if ( pkeyNode.isNull() )
{
mProviderKey.clear();
}
else
{
QDomElement pkeyElt = pkeyNode.toElement();
mProviderKey = pkeyElt.text();
}
QgsDataProvider::ProviderOptions providerOptions;
if ( !setDataProvider( mProviderKey, providerOptions ) )
{
return false;
}
return mValid; // should be true if read successfully
}
/******************************************************************************
* Applies a modifier by appending it to the end of the node's modification
* pipeline.
******************************************************************************/
void ObjectNode::applyModifier(Modifier* modifier)
{
if(!dataProvider())
throw Exception("Cannot insert modifier into a modification pipeline without a data source.");
PipelineObject* pipelineObj = dynamic_object_cast<PipelineObject>(dataProvider());
if(!pipelineObj) {
OORef<PipelineObject> p = new PipelineObject(dataset());
p->setSourceObject(dataProvider());
setDataProvider(p);
pipelineObj = p;
}
pipelineObj->insertModifier(modifier, pipelineObj->modifierApplications().size());
}
QgsMeshLayer::QgsMeshLayer( const QString &meshLayerPath,
const QString &baseName,
const QString &providerKey,
const LayerOptions & )
: QgsMapLayer( MeshLayer, baseName, meshLayerPath )
, mProviderKey( providerKey )
{
// load data
QgsDataProvider::ProviderOptions providerOptions;
setDataProvider( providerKey, providerOptions );
// show at least the mesh by default so we render something
mRendererNativeMeshSettings.setEnabled( true );
} // QgsMeshLayer ctor
bool QgsMeshLayer::readXml( const QDomNode &layer_node, QgsReadWriteContext &context )
{
QgsDebugMsgLevel( QStringLiteral( "Datasource in QgsMeshLayer::readXml: %1" ).arg( mDataSource.toLocal8Bit().data() ), 3 );
//process provider key
QDomNode pkeyNode = layer_node.namedItem( QStringLiteral( "provider" ) );
if ( pkeyNode.isNull() )
{
mProviderKey.clear();
}
else
{
QDomElement pkeyElt = pkeyNode.toElement();
mProviderKey = pkeyElt.text();
}
QgsDataProvider::ProviderOptions providerOptions;
if ( !setDataProvider( mProviderKey, providerOptions ) )
{
return false;
}
QDomElement elemExtraDatasets = layer_node.firstChildElement( QStringLiteral( "extra-datasets" ) );
if ( !elemExtraDatasets.isNull() )
{
QDomElement elemUri = elemExtraDatasets.firstChildElement( QStringLiteral( "uri" ) );
while ( !elemUri.isNull() )
{
QString uri = context.pathResolver().readPath( elemUri.text() );
bool res = mDataProvider->addDataset( uri );
#ifdef QGISDEBUG
QgsDebugMsg( QStringLiteral( "extra dataset (res %1): %2" ).arg( res ).arg( uri ) );
#else
( void )res; // avoid unused warning in release builds
#endif
elemUri = elemUri.nextSiblingElement( QStringLiteral( "uri" ) );
}
}
QString errorMsg;
readSymbology( layer_node, errorMsg, context );
return mValid; // should be true if read successfully
}
QgsMeshLayer::QgsMeshLayer( const QString &meshLayerPath,
const QString &baseName,
const QString &providerKey )
: QgsMapLayer( MeshLayer, baseName, meshLayerPath )
, mProviderKey( providerKey )
{
// load data
setDataProvider( providerKey );
QgsSymbolLayerList l1;
l1 << new QgsSimpleFillSymbolLayer( Qt::white, Qt::NoBrush, Qt::black, Qt::SolidLine, 1.0 );
mNativeMeshSymbol.reset( new QgsFillSymbol( l1 ) );
toggleTriangularMeshRendering( false );
} // QgsMeshLayer ctor
