unified hoverlabel: fix waterfall symbol

Author: antoinerg

src/components/fx/hover.js

@@ -971,6 +971,7 @@ function createHoverText(hoverData, opts, gd) {
                 if(cd.mlcc) pt.mlc = cd.mlcc;
                 if(cd.mlw) pt.mlw = cd.mlw;
                 if(cd.mrc) pt.mrc = cd.mrc;
+                if(cd.dir) pt.dir = cd.dir;
             }
             pt._distinct = true;
 

src/components/legend/style.js

@@ -291,6 +291,14 @@ module.exports = function style(s, gd, legend) {
     function styleWaterfalls(d) {
         var trace = d[0].trace;
 
+        if(d[0]._distinct && d[0].trace[d[0].dir]) {
+            var cont = d[0].trace[d[0].dir].marker;
+            d[0].mc = cont.color;
+            d[0].mlw = cont.line.width;
+            d[0].mlc = cont.line.color;
+            return styleBarLike(d, this, 'waterfall');
+        }
+
         var ptsData = [];
         if(trace.visible && trace.type === 'waterfall') {
             ptsData = d[0].hasTotals ?