[labeling] Don't waste time trying to generate curved labels on lines

where the label length is greater then the line length (cherry picked from commit e1bd4e9)
qgis · Jun 10, 2019 · 9f92a01 · 9f92a01
1 parent 5635c4f
commit 9f92a01
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/src/core/pal/feature.cpp b/src/core/pal/feature.cpp
@@ -1181,6 +1181,18 @@ int FeaturePart::createCurvedCandidatesAlongLine( QList< LabelPosition * > &lPos
     return 0;
   }
 
+  double totalCharacterWidth = 0;
+  for ( int i = 0; i < li->char_num; ++i )
+    totalCharacterWidth += li->char_info[ i ].width;
+
+  if ( totalCharacterWidth > total_distance )
+  {
+    // label doesn't fit on this line, don't waste time trying to make candidates
+    // TODO - in future allow this, and allow label to overlap end of line
+    delete[] path_distances;
+    return 0;
+  }
+
   QLinkedList<LabelPosition *> positions;
   double delta = std::max( li->label_height, total_distance / mLF->layer()->pal->line_p );