Bug Tracker

Opened 14 years ago

Closed 14 years ago

#3508 closed bug (fixed)

Problem with IE and offset/getBoundingClientRect

Reported by: jeffkretz Owned by: brandon
Priority: undecided Milestone: 1.3
Component: dimensions Version: 1.2.6
Keywords: offset Cc: brandon, paul, jeffkretz
Blocked by: Blocking:


After plumbing for quite a while, I've finally isolated what I believe is the source of an offset problem with IE, and I think it is related to a bug in the getBoundingClientRect function as applies to the documentElement.

Please see test case at http://test1.scorpiondesign.com/LocalTest2.htm.

You'll notice in IE6/7 when you scroll the window down and then drag, the position "jumps" the amount of the scroll bar.

Now watch the counters displaying information about it.

The helper is the <table> element. It's offset parent is the <html> element.

In FF3 and Opera you'll see the parent's offset is calculated correctly. You'll also notice that the document.documentElement.getBoundingRect() function returns a negative value, which is handled by adding in the document.scrollTop.

In IE6 and IE7, the parent's offset is calculated INCORRECTLY, and the document.documentElement.getBoundingRect() returns the top position of the HTML element (rather than the viewport), so when adding in the scrollTop, you get a wildly wrong offset top.

FF2, Chrome and Safari do not implement getBoundingRect, but the alternative calculation comes out correctly.

I wasn't sure the best approach here -- should the offset function do a MSIE detection and adjust the getBoundingClientRect values for the HTML element?


Attachments (1)

offset.patch (1.1 KB) - added by jeffkretz 14 years ago.

Download all attachments as: .zip

Change History (8)

comment:1 Changed 14 years ago by john

Cc: brandon paul added

Hmm, not sure which aspect might be causing this - any thoughts Paul or Brandon?

comment:2 Changed 14 years ago by jeffkretz

Any feedback on this? It seems browser detection on the getBoundingRect function may be necessary.

What do you think?


comment:3 Changed 14 years ago by jeffkretz

I hesitate to fiddle with such a core component of the system, but I've put in a browser-detection workaround which has solved the issue for me.

The patch is attached.

Can someone review this for potential inclusion?


Changed 14 years ago by jeffkretz

Attachment: offset.patch added

comment:4 Changed 14 years ago by dmethvin

Cc: jeffkretz added

Jeff, if this is still an issue can you attach the test case? The link no longer works.

comment:5 Changed 14 years ago by jeffkretz

I've restored the test case -- the link works again. JK

comment:6 Changed 14 years ago by jeffkretz

This ticket should be closed as handled, I just tested the problem with 1.3 and everything is working fine. JK

comment:7 Changed 14 years ago by brandon

Resolution: fixed
Status: newclosed
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