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Short connection timeout for symbol selector preview feature fetching

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Because we don't really care if we couldn't fulfill this request,
and the request itself is blocking UI.
This commit is contained in:
Nyall Dawson 2018-08-06 12:20:43 +10:00
parent 70277635a2
commit f3235f7c43
1 changed files with 2 additions and 1 deletions
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3
src/gui/symbology/qgssymbolselectordialog.cpp
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@ -253,7 +253,8 @@ QgsSymbolSelectorWidget::QgsSymbolSelectorWidget( QgsSymbol *symbol, QgsStyle *s
//get first feature from layer for previews //get first feature from layer for previews
if ( mVectorLayer ) if ( mVectorLayer )
{ {
QgsFeatureIterator it = mVectorLayer->getFeatures( QgsFeatureRequest().setLimit( 1 ) ); // short timeout for request - it doesn't really matter if we don't get the feature, and this call is blocking UI
QgsFeatureIterator it = mVectorLayer->getFeatures( QgsFeatureRequest().setLimit( 1 ).setConnectionTimeout( 100 ) );
it.nextFeature( mPreviewFeature ); it.nextFeature( mPreviewFeature );
mPreviewExpressionContext.appendScopes( QgsExpressionContextUtils::globalProjectLayerScopes( mVectorLayer ) ); mPreviewExpressionContext.appendScopes( QgsExpressionContextUtils::globalProjectLayerScopes( mVectorLayer ) );
mPreviewExpressionContext.setFeature( mPreviewFeature ); mPreviewExpressionContext.setFeature( mPreviewFeature );