Skip "hoverinfo": "none" trace display for hover modes

draftlogs/5854_fix.md

@@ -0,0 +1 @@
+- Skip `"hoverinfo": "none"` trace display for hover modes [[#5854](https://github.com/plotly/plotly.js/pull/5854)], with thanks to @Domino987 for the contribution!

src/components/fx/hover.js

@@ -818,6 +818,8 @@ function createHoverText(hoverData, opts, gd) {
     var container = opts.container;
     var outerContainer = opts.outerContainer;
     var commonLabelOpts = opts.commonLabelOpts || {};
+    // Early exit if no labels are drawn
+    if(hoverData.length === 0) return [[]];
 
     // opts.fontFamily/Size are used for the common label
     // and as defaults for each hover label, though the individual labels
@@ -1024,9 +1026,9 @@ function createHoverText(hoverData, opts, gd) {
     if(helpers.isUnifiedHover(hovermode)) {
         // Delete leftover hover labels from other hovermodes
         container.selectAll('g.hovertext').remove();
-
+        var groupedHoverData = hoverData.filter(function(data) {return data.hoverinfo !== 'none';});
         // Return early if nothing is hovered on
-        if(hoverData.length === 0) return;
+        if(groupedHoverData.length === 0) return;
 
         // mock legend
         var mockLayoutIn = {
@@ -1048,11 +1050,14 @@ function createHoverText(hoverData, opts, gd) {
 
         // prepare items for the legend
         mockLegend.entries = [];
-        for(var j = 0; j < hoverData.length; j++) {
-            var texts = getHoverLabelText(hoverData[j], true, hovermode, fullLayout, t0);
+        for(var j = 0; j < groupedHoverData.length; j++) {
+            var pt = groupedHoverData[j];
+            if(pt.hoverinfo === 'none') continue;
+
+            var texts = getHoverLabelText(pt, true, hovermode, fullLayout, t0);
             var text = texts[0];
             var name = texts[1];
-            var pt = hoverData[j];
+
             pt.name = name;
             if(name !== '') {
                 pt.text = name + ' : ' + text;
@@ -1087,7 +1092,7 @@ function createHoverText(hoverData, opts, gd) {
         var tbb = legendContainer.node().getBoundingClientRect();
         var tWidth = tbb.width + 2 * HOVERTEXTPAD;
         var tHeight = tbb.height + 2 * HOVERTEXTPAD;
-        var winningPoint = hoverData[0];
+        var winningPoint = groupedHoverData[0];
         var avgX = (winningPoint.x0 + winningPoint.x1) / 2;
         var avgY = (winningPoint.y0 + winningPoint.y1) / 2;
         // When a scatter (or e.g. heatmap) point wins, it's OK for the hovelabel to occlude the bar and other points.
@@ -1102,11 +1107,11 @@ function createHoverText(hoverData, opts, gd) {
                 lyTop = avgY - HOVERTEXTPAD;
                 lyBottom = avgY + HOVERTEXTPAD;
             } else {
-                lyTop = Math.min.apply(null, hoverData.map(function(c) { return Math.min(c.y0, c.y1); }));
-                lyBottom = Math.max.apply(null, hoverData.map(function(c) { return Math.max(c.y0, c.y1); }));
+                lyTop = Math.min.apply(null, groupedHoverData.map(function(c) { return Math.min(c.y0, c.y1); }));
+                lyBottom = Math.max.apply(null, groupedHoverData.map(function(c) { return Math.max(c.y0, c.y1); }));
             }
         } else {
-            lyTop = lyBottom = Lib.mean(hoverData.map(function(c) { return (c.y0 + c.y1) / 2; })) - tHeight / 2;
+            lyTop = lyBottom = Lib.mean(groupedHoverData.map(function(c) { return (c.y0 + c.y1) / 2; })) - tHeight / 2;
         }
 
         var lxRight, lxLeft;
@@ -1115,11 +1120,11 @@ function createHoverText(hoverData, opts, gd) {
                 lxRight = avgX + HOVERTEXTPAD;
                 lxLeft = avgX - HOVERTEXTPAD;
             } else {
-                lxRight = Math.max.apply(null, hoverData.map(function(c) { return Math.max(c.x0, c.x1); }));
-                lxLeft = Math.min.apply(null, hoverData.map(function(c) { return Math.min(c.x0, c.x1); }));
+                lxRight = Math.max.apply(null, groupedHoverData.map(function(c) { return Math.max(c.x0, c.x1); }));
+                lxLeft = Math.min.apply(null, groupedHoverData.map(function(c) { return Math.min(c.x0, c.x1); }));
             }
         } else {
-            lxRight = lxLeft = Lib.mean(hoverData.map(function(c) { return (c.x0 + c.x1) / 2; })) - tWidth / 2;
+            lxRight = lxLeft = Lib.mean(groupedHoverData.map(function(c) { return (c.x0 + c.x1) / 2; })) - tWidth / 2;
         }
 
         var xOffset = xa._offset;

test/jasmine/tests/hover_label_test.js

@@ -4601,6 +4601,38 @@ describe('hovermode: (x|y)unified', function() {
             .then(done, done.fail);
     });
 
+    it('should not display hover for display: none', function(done) {
+        Plotly.newPlot(gd, {
+            data: [{
+                name: 'A',
+                y: [1]
+            }, {
+                name: 'B',
+                y: [2],
+                hoverinfo: 'none'
+            }],
+            layout: {
+                hovermode: 'x unified',
+                showlegend: false,
+                width: 500,
+                height: 500,
+                margin: {
+                    t: 50,
+                    b: 50,
+                    l: 50,
+                    r: 50
+                }
+            }
+        })
+        .then(function() {
+            _hover(gd, { xpx: 200, ypx: 200 });
+            assertLabel({title: '0', items: [
+                'A : 1'
+            ]});
+        })
+        .then(done, done.fail);
+    });
+
     it('y unified should work for x/y cartesian traces', function(done) {
         var mockCopy = Lib.extendDeep({}, mock);
         mockCopy.layout.hovermode = 'y unified';