Mirrors/phaser
2
0
Fork 0
mirror of https://github.com/photonstorm/phaser synced 2024-11-22 04:33:31 +00:00
Code Issues Projects Releases Packages Wiki Activity

Fix InputManager.onTouchMove to work on scrolled-down pages

Browse source 
`document.elementFromPoint` expects plain viewport coordinates [1],
while we used `page[XY]`, which are viewport coordinates with added
scroll offsets [2].

So on pages where no scrolling had yet occurred,
`InputManager.onTouchMove` worked as expected. But as soon as one
scrolled down/right on the page, the element detection was off by the
scroll offset.

We switch from `page[XY]` to `client[XY]` which are plain viewport
coordinates [3] and thereby make element detection work also on pages
that have been scrolled around.

[1] https://drafts.csswg.org/cssom-view/#dom-document-elementfrompoint
[2] https://w3c.github.io/touch-events/#dom-touch-pagex
[3] https://w3c.github.io/touch-events/#dom-touch-clientx
This commit is contained in:
Christian Aistleitner 2023-11-24 12:49:20 +01:00
parent 47d393ac29
commit 66901b32d3
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
src/input/InputManager.js
View file

@ -614,7 +614,7 @@ var InputManager = new Class({
if (pointer.active && pointer.identifier === changedTouch.identifier) if (pointer.active && pointer.identifier === changedTouch.identifier)
{ {
var element = document.elementFromPoint(changedTouch.pageX, changedTouch.pageY); var element = document.elementFromPoint(changedTouch.clientX, changedTouch.clientY);
var overCanvas = element === this.canvas; var overCanvas = element === this.canvas;
if (!this.isOver && overCanvas) if (!this.isOver && overCanvas)