#4140 closed bug (wontfix)

Opened February 13, 2009 11:30AM UTC

Closed August 22, 2009 07:46AM UTC

Snap to Grid issues with browser zoom

Reported by: Jay Owned by:
Priority: major Milestone: 1.8
Component: ui.draggable Version: 1.6rc6
Keywords: Cc:
Blocked by: Blocking:
Description

There is an issue with snapping to grid when the browser uses its internal zoom functionality. The snapping appears to be snapping to the correct position at first then shifts right by approximately 5 pixels.

This can be replicated on http://jqueryui.com/demos/draggable/#snap-to in Internet Explorer 7 and by holding the CTRL key and scrolling the mouse.

I understand it may be very difficult to detect the fact that the browser is zoomed, but the majority of novice users may be zoomed at 125% without even realising it.

Attachments (0)
Change History (6)

Changed February 13, 2009 11:38AM UTC by Jay comment:1

I've also found another bug reported which states that this shift occurs in Internet Explorer and therefore I may not be noticing it with snapping enabled. However when zoomed the snap is incorrect and still snaps to the specified px size rather than the px * zoom.

Also when the browser is zoomed my draggables seem to leave their content behind, for example the div will move around freely but the text content will stay in its original position and only move on the Y axis.

Changed February 13, 2009 12:23PM UTC by Jay comment:2

During zoom in Firefox, the innerWidth property appears to report a different value. The div element is 100% width in css. However this does not occur in Internet Explorer.

Changed February 13, 2009 02:39PM UTC by Jay comment:3

I am using the grid property and not the snap to element property.

Changed February 15, 2009 03:48AM UTC by scottgonzalez comment:4

milestone: TBD → 1.6

Changed March 08, 2009 02:36PM UTC by rdworth comment:5

milestone: 1.7 → 1.8

Changed August 22, 2009 07:46AM UTC by paul comment:6

resolution: → wontfix
status: new → closed

Unfortunately it is impossible to my knowledge to reliably detect the page zoom and its value in any browser, so I have to close this ticket for now. If you find a way to detect it that doesn't cause significant overhead, please reopen.