Set an explicit image when dragging from the routing panel

This may help with #912 but at the very least it gives us a full size
image consistent with dragging marker that is already on the map.

diff --git a/app/assets/javascripts/index/directions.js b/app/assets/javascripts/index/directions.js
index 82c4d6456cdbde85e5a8f9ee49d05f20fe2a7f9c..6149228ecb22ad02c79a5b10a5f9e8e33d2479b0 100644 (file)
--- a/app/assets/javascripts/index/directions.js
+++ b/app/assets/javascripts/index/directions.js
@@ -302,10 +302,8 @@ OSM.Directions = function (map) {
   $(".routing_marker").on('dragstart', function (e) {
     e.originalEvent.dataTransfer.effectAllowed = 'move';
     e.originalEvent.dataTransfer.setData('id', this.id);
-    var xo = e.originalEvent.clientX - $(e.target).offset().left;
-    var yo = e.originalEvent.clientY - $(e.target).offset().top;
-    e.originalEvent.dataTransfer.setData('offsetX', e.originalEvent.target.width / 2 - xo);
-    e.originalEvent.dataTransfer.setData('offsetY', e.originalEvent.target.height - yo);
+    var img = $("<img>").attr("src", $(e.originalEvent.target).attr("src"));
+    e.originalEvent.dataTransfer.setDragImage(img.get(0), 12, 21);
   });
 
   var page = {};
@@ -323,8 +321,7 @@ OSM.Directions = function (map) {
       var oe = e.originalEvent;
       var id = oe.dataTransfer.getData('id');
       var pt = L.DomEvent.getMousePosition(oe, map.getContainer());  // co-ordinates of the mouse pointer at present
-      pt.x += Number(oe.dataTransfer.getData('offsetX'));
-      pt.y += Number(oe.dataTransfer.getData('offsetY'));
+      pt.y += 20;
       var ll = map.containerPointToLatLng(pt);
       endpoints[id === 'marker_from' ? 0 : 1].setLatLng(ll);
       getRoute();