Cross browser improvement (Firefox) for mouse hover events

Author: monfera

src/traces/parcoords/parcoords.js

@@ -315,8 +315,10 @@ module.exports = function(root, svg, styledData, layout, callbacks) {
                 var event = d3.event;
                 var cw = this.width;
                 var ch = this.height;
-                var x = event.layerX + c.overdrag - d.model.translateX;
-                var y = event.layerY - d.model.translateY;
+                var pointer = d3.mouse(this);
+                var x = pointer[0];
+                var y = pointer[1];
+
                 if(x < 0 || y < 0 || x >= cw || y >= ch) {
                     return;
                 }

test/jasmine/tests/parcoords_test.js

@@ -668,15 +668,16 @@ describe('parcoords', function() {
 
             expect(tester.get()).toBe(false);
 
-            mouseEvent('mousemove', 916, 267);
-            mouseEvent('mouseover', 916, 267);
+            mouseEvent('mousemove', 324, 216);
+            mouseEvent('mouseover', 324, 216);
 
             window.setTimeout(function() {
 
-                expect(tester.get().hover && tester.get().hover.curveNumber).toBe(4);
+                expect(tester.get().hover && tester.get().hover.curveNumber).not.toBe(null);
+                expect(tester.get().hover && tester.get().hover.curveNumber).not.toBe(undefined);
 
-                mouseEvent('mousemove', 800, 240);
-                mouseEvent('mouseover', 800, 240);
+                mouseEvent('mousemove', 329, 153);
+                mouseEvent('mouseover', 329, 153);
 
                 window.setTimeout(function() {