X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=src%2Fdygraph-utils.js;h=54b6b6989a5f70ec7d7c5454599b4056ba5e8f94;hb=refs%2Fheads%2Fmaster;hp=c0b8f34b60b5f3f80494e944c265825da9c37f3e;hpb=c33b49f95618b6c5891dbef82ee76ea69ce3c783;p=dygraphs.git

diff --git a/src/dygraph-utils.js b/src/dygraph-utils.js
index c0b8f34..54b6b69 100644
--- a/src/dygraph-utils.js
+++ b/src/dygraph-utils.js
@@ -199,6 +199,7 @@ export function findPos(obj) {
  * @private
  */
 export function pageX(e) {
+  if (e.isTouchOver) return (!e.changedTouches[0] || e.changedTouches[0].pageX < 0) ? 0 : e.changedTouches[0].pageX;
   return (!e.pageX || e.pageX < 0) ? 0 : e.pageX;
 };
 
@@ -211,6 +212,7 @@ export function pageX(e) {
  * @private
  */
 export function pageY(e) {
+  if (e.isTouchOver) return (!e.changedTouches[0] || e.changedTouches[0].pageY < 0) ? 0 : e.changedTouches[0].pageY;
   return (!e.pageY || e.pageY < 0) ? 0 : e.pageY;
 };