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------- Additional comments from kstrib...@openoffice.org Sat Jul 24 14:24:50 +0000 2010 ------- The patch prevents the crash by avoiding calling graphite when mnMinCharPos == mnEndCharPos. On windows the example document didn't crash when I changed the format of the highlighted text, but that seems to be because it happened to use an existing longer segment from the cache. The positioning bug appears to be due to the cache of Graphite Segments held by OOo. Normally, it is alright to use a cached segment which is for a longer string than was requested, in the CTL case such context is often necessary to get correct positions. However, in this case the cached segment had the ligature, whereas the requested text does not due to the hyphen break. The patch adds code to detect this case by querying the cached segment to determine if the character at mnEndCharPos-1 maps to a glyph and if so whether that glyph spans characters outside the requested range. If there is no glyph mapped for that character or the glyph is a ligature crossing the run boundary, then the cached segment is ignored and a new segment created with just the requested text. There seems to be a remaining problem with the hyphenation highlighted in red, because the top right hand end of the ff ligature is clipped by the rendering of the background for the hyphen. I haven't yet tracked down where the background is drawn from to see if it is possible to prevent that happening. --------------------------------------------------------------------- Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@gsl.openoffice.org For additional commands, e-mail: issues-h...@gsl.openoffice.org --------------------------------------------------------------------- To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
