Bug 17116 – Character clusters in complex scripts can not span colors or other formatting

Bug 17116 - Character clusters in complex scripts can not span colors or other formatting


Summary:	Character clusters in complex scripts can not span colors or other formatting

Status:	RESOLVED DUPLICATE of bug 6148

Product:	WebKit
Classification:	Unclassified
Component:	Layout and Rendering
Version:	528+ (Nightly build)
Platform:	All All

Importance:	P2 Normal
Assigned To:	Nobody

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2008-01-31 08:40 PST by Brett Wilson (Google)
Modified:	2008-01-31 13:11 PST (History)
CC List:	0 users

See Also:

Attachments
Example page (1.41 KB, text/html) 2008-01-31 08:41 PST, Brett Wilson (Google)	no flags	Details
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Description Brett Wilson (Google) 2008-01-31 08:40:45 PST

There is a set of formatting changes such as text color that should not cause a break in runs when composing complex scripts. IE seems to do a good job here.

WebKit breaks the text runs on this color change and sends each one individually to the font system (ASTUI, etc.), so the context is lost and there is no shaping across the boundary. I suspect this drawing should happen more like selections, where it gives the entire run to the font system, but specifies a subset of the string to draw with specified style. This will allow the font system to do shaping and then just draw the subset of characters relating to the current style.

Comment 1 Brett Wilson (Google) 2008-01-31 08:41:07 PST

Created attachment 18816 [details]
Example page

Comment 2 Alexey Proskuryakov 2008-01-31 13:11:48 PST


*** This bug has been marked as a duplicate of 6148 ***