RESOLVED FIXED Bug 114722
[CSS Regions] clip rectangles are incorrectly computed in some positioned elements 
https://bugs.webkit.org/show_bug.cgi?id=114722
Summary [CSS Regions] clip rectangles are incorrectly computed in some positioned ele...
Mihai Balan
Reported 2013-04-17 01:05:52 PDT
Created attachment 198476 [details] Test-case Positioned content generated by MathJax gets clipped or rendered invisibly, depending on the position of the region against the viewport. Reproduction ------------ - open attachment - click on the button Actual ------ For each click, the region moves down and some of the equation gets clipped (not all of it) Expected -------- For each click, the region moves down but the equation keeps showing
Attachments
Test-case (986 bytes, text/html)
2013-04-17 01:05 PDT, Mihai Balan 		no flags
Details
Repaint test (2.89 KB, patch)
2013-11-12 07:35 PST, Radu Stavila 		mihnea: review-
DetailsFormatted DiffDiff
Patch integrating reviewer feedback (2.44 KB, patch)
2013-11-12 09:32 PST, Radu Stavila 		no flags
DetailsFormatted DiffDiff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Max Vujovic
Comment 1 2013-06-07 11:36:33 PDT
This bug doesn't repro for me in today's nightly (r151260).
Johannes Wilm
Comment 2 2013-06-07 11:47:46 PDT
But does the formula renderer? I need to download the attachment and open it locally for the test to work. I can still reproduce this in Chrome Version 29.0.1530.2 dev.
Max Vujovic
Comment 3 2013-06-07 14:29:22 PDT
(In reply to comment #2) > But does the formula renderer? I need to download the attachment and open it locally for the test to work. I can still reproduce this in Chrome Version 29.0.1530.2 dev. It seems the bug repros in Chrome like you say, but not in Safari. I only tested Safari. Thanks for the info!
Michelangelo De Simone
Comment 4 2013-06-13 10:59:55 PDT
Works for me on today's nightly (r151543)
Max Vujovic
Comment 5 2013-06-13 11:02:57 PDT
(In reply to comment #4) > Works for me on today's nightly (r151543) Look at the above comments- We should post a Chromium bug for this issue since it doesn't repro in Safari.
Mihai Balan
Comment 6 2013-06-14 05:20:39 PDT
I've logged https://code.google.com/p/chromium/issues/detail?id=249715 for Blink.
Mihai Balan
Comment 7 2013-06-14 05:22:14 PDT
Keeping this open so that we don't forget to import the test when this gets fixed in Blink.
Radu Stavila
Comment 8 2013-11-12 07:35:13 PST
Created attachment 216672 [details] Repaint test This problem is already fixed in webkit. Added test in fast/repaint.
Mihnea Ovidenie
Comment 9 2013-11-12 08:35:06 PST
Comment on attachment 216672 [details] Repaint test View in context: https://bugs.webkit.org/attachment.cgi?id=216672&action=review Looks good but you need to decide whether you want to use repaint.js or text-based-repaint.js for this test. If you want to use repaint.js you need to generate a png file too. > LayoutTests/ChangeLog:3 > + Created test for testing repaint rects for regions and some positioned elements. Please clarify what you mean by "some positioned elements". > LayoutTests/fast/repaint/increasing-region-content-height.html:4 > + <script src="resources/repaint.js" type="text/javascript"></script> If you use repaint.js then you should also have a png file for the mac platform and add lines to skip the test on other non-mac platforms where the test is run. If you decide to use the script resources/text-based-repaint.js, then you will have a text output file without the png. From looking at the comment inside repaint.js, text-based-repaint.js seems the preferred way. > LayoutTests/fast/repaint/increasing-region-content-height.html:22 > + <body onload="runRepaintTest();"> Can you add a comment telling what the success of this test looks like? > LayoutTests/fast/repaint/increasing-region-content-height.html:24 > + <div class="zang"> zang? :)
Radu Stavila
Comment 10 2013-11-12 09:32:28 PST
Created attachment 216686 [details] Patch integrating reviewer feedback
Mihnea Ovidenie
Comment 11 2013-11-12 11:26:27 PST
Comment on attachment 216686 [details] Patch integrating reviewer feedback r=me
WebKit Commit Bot
Comment 12 2013-11-12 12:03:15 PST
Comment on attachment 216686 [details] Patch integrating reviewer feedback Clearing flags on attachment: 216686 Committed r159132: <http://trac.webkit.org/changeset/159132>
WebKit Commit Bot
Comment 13 2013-11-12 12:03:23 PST
All reviewed patches have been landed. Closing bug.
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