Closed Bug 725426 Opened 12 years ago Closed 12 years ago

Incorrect getBoundingClientRect() for transform-style: flat

Categories

(Core :: DOM: CSS Object Model, defect)

x86
Linux
defect
Not set
minor

Tracking

()

RESOLVED FIXED
mozilla13

People

(Reporter: ayg, Assigned: ayg)

References

Details

Attachments

(1 file)

Example:

data:text/html,<!doctype html>
<div style="-moz-transform: perspective(200px)">
<div style="-moz-transform: translatez(-100px);
width:100px;height:100px;background:blue">
<script>
var rect = document.querySelector("div>div").getBoundingClientRect();
alert(rect.top+','+rect.right+','+rect.bottom+','+rect.left)
</script>

This should alert "8,108,108,8", because in transform-style: flat mode, transforms don't accumulate.  Chrome 18 dev and IE10 Developer Preview both alert this (or something slightly off in IE's case).  Nightlies alert something way off, the same as transform-style: preserve-3d.

Bug 724025 and bug 718809 are related.  The patch for those does not fix this.  I'll attach a patch in a moment.
Attached patch Patch v1Splinter Review
I'll request review when tests have passed.
Assignee: nobody → ayg
Whiteboard: [autoland]
Whiteboard: [autoland] → [autoland-in-queue]
Autoland Patchset:
	Patches: 595470
	Branch: mozilla-central => try
	Destination: http://hg.mozilla.org/try/rev/8f473a21d905
Try run started, revision 8f473a21d905. To cancel or monitor the job, see: https://tbpl.mozilla.org/?tree=Try&rev=8f473a21d905
Comment on attachment 595470 [details] [diff] [review]
Patch v1

Review of attachment 595470 [details] [diff] [review]:
-----------------------------------------------------------------

Preemptive r+ from me
Attachment #595470 - Flags: review+
You need to check Preserves3D() on the child instead here.

Preserves3DChildren() means that the parent intends to preserve-3d on it's children (has the transform-style: preserve-3d attribute), but this isn't necessarily applied. overflow:hidden clipping on the child can prevent this from happening, see the implementation of nsIFrame::Preserves3D().
Actually, ignore me, only clipping on the parent affects this. This should be fine.
Try run for 8f473a21d905 is complete.
Detailed breakdown of the results available here:
    https://tbpl.mozilla.org/?tree=Try&rev=8f473a21d905
Results (out of 212 total builds):
    success: 176
    warnings: 22
    failure: 14
Builds (or logs if builds failed) available at:
http://ftp.mozilla.org/pub/mozilla.org/firefox/try-builds/autolanduser@mozilla.com-8f473a21d905
Whiteboard: [autoland-in-queue]
http://hg.mozilla.org/integration/mozilla-inbound/rev/38a007426ee2
Flags: in-testsuite+
Keywords: checkin-needed
Target Milestone: --- → mozilla13
https://hg.mozilla.org/mozilla-central/rev/38a007426ee2
Status: NEW → RESOLVED
Closed: 12 years ago
Resolution: --- → FIXED
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