Bug 17116

Summary:

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

Product:

WebKit

Reporter:

Brett Wilson (Google) <brettw>

Component:

Layout and Rendering

Assignee:

Nobody <webkit-unassigned>

Status:

RESOLVED DUPLICATE

Severity:

Normal

Priority:

Version:

528+ (Nightly build)

Hardware:

All

OS:

All

Attachments:

Description	Flags
Example page	none

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 ***