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#5912 closed bug (notabug)

Opened August 06, 2010 08:18PM UTC

Closed April 09, 2013 12:12PM UTC

Draggable: Avoid using scrollWidth and scrollHeight for containment calculations

Reported by: Owned by:
Priority: minor Milestone: 2.0.0
Component: ui.draggable Version: 1.8.4
Keywords: scrollWidth, scrollHeight, webkit Cc:
Blocked by: Blocking:

scrollWidth/scrollHeight should not be used to calculate containment since they produce inconsistent values between Webkit and all other browsers. It seems more straightforward to just rely on the offsetWidth/offsetHeight of the element.

Webkit browsers will calculate the scrollWidth and scrollHeight differently then all other browser in the following scenario:

Containment element for the Draggable module has absolutely positioned elements that overflow the container. Unless the overflow is set to hidden jQuery will use the scrollWidth and scrollHeight. In Webkit scrollWidth/scrollHeight includes the absolutely positioned elements while all other browsers do not.

co.left+(over ? Math.max(ce.scrollWidth,ce.offsetWidth) : ce.offsetWidth) - (parseInt($(ce).css("borderLeftWidth"),10) || 0) - (parseInt($(ce).css("paddingRight"),10) || 0) - this.helperProportions.width - this.margins.left, ? Math.max(ce.scrollHeight,ce.offsetHeight) : ce.offsetHeight) - (parseInt($(ce).css("borderTopWidth"),10) || 0) - (parseInt($(ce).css("paddingBottom"),10) || 0) - this.helperProportions.height -
Attachments (0)
Change History (5)

Changed October 11, 2012 09:07PM UTC by scottgonzalez comment:1

milestone: TBD2.0.0

Changed October 26, 2012 04:58AM UTC by mikesherov comment:2

status: newopen
summary: Using scrollWidth and scrollHeight for draggable containment is inconsistent between Webkit and other browserDraggable: Avoid using scrollWidth and scrollHeight for containment calculations

I agree this is wrong. Would be great to get a test case for this though.

Changed January 23, 2013 02:36AM UTC by tj.vantoll comment:3

#7016 is a duplicate of this ticket.

Changed January 23, 2013 02:38AM UTC by tj.vantoll comment:4

See #7016 for test case ( I verified that simply using

fixes the problem in both Chrome and IE8.

Changed April 09, 2013 12:12PM UTC by scottgonzalez comment:5

resolution: → notabug
status: openclosed

Removing the scrollWidth check and justing using offsetWidth doesn't actually fix containment. See #7016.