RESOLVED INVALID 15060
REGRESSION: Misaligned images at http://guide.apple.com/ 
https://bugs.webkit.org/show_bug.cgi?id=15060
Summary REGRESSION: Misaligned images at http://guide.apple.com/
Adele Peterson
Reported 2007-08-23 10:48:21 PDT
8/22/07 11:14 PM Chris Petersen: * SUMMARY With TOT (25192, 14864) running under Leopard9A529, I'm noticing images are misaligned in a TABLE at http://guide.apple.com/. See screen shot. This problem doesn't happen with Safari running under stock webkit on 9A529. * STEPS TO REPRODUCE 1. With TOT (25192, 14864) running under Leopard9A529, go to http://guide.apple.com/ 2. Notice the image shifted slightly in the "Search by Keyword" and "Browse by Category" section * RESULTS No image shifting should see in the table but does 8/22/07 11:25 PM Chris Petersen: Semi reduced test case has been attached. 8/23/07 12:13 AM Chris Petersen: Here is the HTML structure. The problem seems only happen if the table is nested in a <center> element/ <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="http://guide.apple.com/"> <title>Apple - Macintosh Products Guide</title> </head> <body> <center> <table width="180" border="0" cellpadding="0" cellspacing="0"> <tr> <td width="8"><img src="/catbar/boxtopleftcorner08222002.gif"></td> <td><img src="/catbar/boxtop08222002.gif"></td> </tr> <tr> <td background="/catbar/boxtopleft08222002.gif"></td> <td>me</td> </tr> </table> </center> </body> </html> 8/23/07 12:17 AM Chris Petersen: The only table specific changes I see have been these two: http://trac.webkit.org/projects/webkit/changeset/25174 http://trac.webkit.org/projects/webkit/changeset/25171
Attachments
test case (530 bytes, text/html)
2007-08-23 10:49 PDT, Adele Peterson 		no flags
Details
screenshot (224.56 KB, image/tiff)
2007-08-23 11:21 PDT, Adele Peterson 		no flags
Details
Reduction as rendered in TOT (855 bytes, image/png)
2007-08-24 14:34 PDT, mitz 		no flags
Details
Reduction as rendered in older version (859 bytes, image/png)
2007-08-24 14:35 PDT, mitz 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Adele Peterson
Comment 1 2007-08-23 10:48:53 PDT
<rdar://problem/5431566>
Adele Peterson
Comment 2 2007-08-23 10:49:20 PDT
Created attachment 16097 [details] test case
mitz
Comment 3 2007-08-23 11:10:21 PDT
Hmm... DOM and render trees are the same. Looks like an image tiling problem. Adele/Chris, can you check if it regressed in <http://trac.webkit.org/projects/webkit/changeset/25187> (maybe also check Tiger)?
Adele Peterson
Comment 4 2007-08-23 11:21:00 PDT
Created attachment 16098 [details] screenshot
Adele Peterson
Comment 5 2007-08-23 11:32:54 PDT
I can confirm that this was caused by the image tiling change in r25187
mitz
Comment 6 2007-08-23 14:06:17 PDT
Simpler: <div style="width: 100px; height: 100px; background: url(http://guide.apple.com//catbar/boxtopleft08222002.gif)"></div>
mitz
Comment 7 2007-08-23 14:28:01 PDT
I am pretty sure the bug is not in WebKit. Using a different GIF with the same dimensions makes it go away.
Adele Peterson
Comment 8 2007-08-24 14:04:20 PDT
So now I can reproduce on the live site if i resize the window. Mitz, I'm not sure I understand your simpler reduction. I don't see a difference between TOT and an older version of Safari. How does the bug appear with that reduction?
mitz
Comment 9 2007-08-24 14:30:46 PDT
Created attachment 16111
Adele Peterson
Comment 10 2007-08-24 14:34:02 PDT
it just shows up as single lines for me...but I'm on Leopard. Tricky.
mitz
Comment 11 2007-08-24 14:34:58 PDT
Created attachment 16112 [details] Reduction as rendered in TOT
mitz
Comment 12 2007-08-24 14:35:33 PDT
Created attachment 16113 [details] Reduction as rendered in older version
Adele Peterson
Comment 13 2007-08-27 13:49:31 PDT
Mitz was right that the bug was in a lower component. Marking as invalid. This will be fixed internally.
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