Issue 104252 - Overline element overlaps element below it at some zoom levels
Summary: Overline element overlaps element below it at some zoom levels
Status: CONFIRMED
Alias: None
Product: Math
Classification: Application
Component: ui (show other issues)
Version: OOo 3.1
Hardware: Unknown Windows, all
: P4 Trivial (vote)
Target Milestone: ---
Assignee: AOO issues mailing list
QA Contact:
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-08-15 13:38 UTC by troodon
Modified: 2013-08-07 14:54 UTC (History)
4 users (show)

See Also:
Issue Type: DEFECT
Latest Confirmation in: ---
Developer Difficulty: ---

Attachments
Math testcase (5.06 KB, application/vnd.oasis.opendocument.formula)
2009-08-15 13:41 UTC, troodon 		no flags Details
Screenshot of testcase, zoom 135%. (1.01 KB, application/vnd.oasis.opendocument.formula)
2009-08-15 13:42 UTC, troodon 		no flags Details
Screenshot of the issue in a Writer document, zoom 136%. (1.44 KB, image/png)
2009-08-15 13:45 UTC, troodon 		no flags Details
Add an attachment (proposed patch, testcase, etc.)

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Description troodon 2009-08-15 13:38:37 UTC 
The overline element overlaps the element below it at some zoom levels. See the
attached screenshot and testcase. In testcase start for example at 160% zoom and
begin to zoom-out. You'll see that the overline element is "jumping" over the
element below it (I mean the distance between both elements changes notably
across zoom levels), and at some zoom levels, they overlap, for example 155%,
135%, 115%, 85%, 75%.

Something similar happens with the bar element, but only al 75% zoom.

This also happens with formulas inserted in a Writer document.

I tested with OpenSymbol v1.21 (you can get it in issue 99047), 1280x800 (Vista)
and 1024x768 (XP SP2) resolutions and subpixel rendering on.
Comment 1 troodon 2009-08-15 13:41:11 UTC 
Created attachment 64183 [details]
Math testcase
Comment 2 troodon 2009-08-15 13:42:51 UTC 
Created attachment 64184 [details]
Screenshot of testcase, zoom 135%.
Comment 3 troodon 2009-08-15 13:45:22 UTC 
Created attachment 64185 [details]
Screenshot of the issue in a Writer document, zoom 136%.
Comment 4 jbf.faure 2009-08-15 21:17:02 UTC 
I confirm the problem for OOo 3.1.1 RC1 (FR)under Ubuntu 8.04.
Comment 5 michael.ruess 2009-08-18 08:51:17 UTC 
MRU->TL / IH: could you please clear out whether this is font- or
application-related. Thanks!
Comment 6 nospam 2009-08-18 09:02:31 UTC 
The positioning of the overline element is not handled by the font - so I think this is an application related 
issue