From 2ef99da242feb4013a8abe4ebb543b0f1b3b11f2 Mon Sep 17 00:00:00 2001
From: "Juergen E. Fischer" <jef@norbit.de>
Date: Tue, 2 Apr 2019 17:18:40 +0200
Subject: [PATCH] legend: truncate excessively long tooltips (fixes #21737)

---
 src/core/layertree/qgslayertreemodel.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/core/layertree/qgslayertreemodel.cpp b/src/core/layertree/qgslayertreemodel.cpp
index e18f5130bcd..14099eaf8bc 100644
--- a/src/core/layertree/qgslayertreemodel.cpp
+++ b/src/core/layertree/qgslayertreemodel.cpp
@@ -330,7 +330,13 @@ QVariant QgsLayerTreeModel::data( const QModelIndex &index, int role ) const
           parts << QString();
         }
 
-        parts << "<i>" + layer->publicSource().toHtmlEscaped() + "</i>";
+        QString source( layer->publicSource() );
+        if ( source.size() > 1024 )
+        {
+          source = source.left( 1023 ) + QStringLiteral( "…" );
+        }
+
+        parts << "<i>" + source.toHtmlEscaped() + "</i>";
 
         return parts.join( QStringLiteral( "<br/>" ) );
       }