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Added @zoom_level variable for data-defined styling

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Martin Dobias 2020-04-08 14:55:51 +02:00 committed by Nyall Dawson
parent 1f554621b2
commit a3807cf2a1
1 changed files with 5 additions and 0 deletions
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5
src/core/vectortile/qgsvectortilelayerrenderer.cpp
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@ -113,6 +113,11 @@ bool QgsVectorTileLayerRenderer::render()
if ( ctx.renderingStopped() )
return false;
// add @zoom_level variable which can be used in styling
QgsExpressionContextScope *scope = new QgsExpressionContextScope( QObject::tr( "Tiles" ) ); // will be deleted by popper
scope->setVariable( "zoom_level", mTileZoom, true );
QgsExpressionContextScopePopper popper( ctx.expressionContext(), scope );
mRenderer->startRender( *renderContext(), mTileZoom, mTileRange );
QMap<QString, QSet<QString> > requiredFields = mRenderer->usedAttributes( ctx );