Updates:
Status: Started
Owner: [email protected]
Comment #17 on issue 6135 by [email protected]: RTL: Hebrew text with
diacritical marks rendered with extra spaces in Chrome/Windows.
http://code.google.com/p/chromium/issues/detail?id=6135
Thank you for all those who gave me lots of information, and sorry for my
late updates.
This week, I have changed the "white-space" property and investigated the
behaviors of WebKit in rendering both complex texts and simple texts. To
write from conclusion, the UniscribeHelper class can treat line-break
characters (U+000A and U+000D) as whitespace.
When the "while-space" property of a complex text is "pre" (or the text is
in a <pre> element), WebKit automatically splits the text with line-
break characters and call the UniscribeHelper class line by line. So, a
string passed to the UniscribeHelper class does not contain line-break
characters.
On the other hand, when the "while-space" property of a complex text is
either "nowrap" or "normal", WebKit calls the UniscribeHelper class
without splitting the text with line-break characters. So, a string passed
to the UniscribeHelper class may contain line-break characters.
These facts make me assume the UniscribeHelper class can treat line-break
characters as whitespace ones. In fact, the Font::drawSimpleText()
function (which renders a simple text) actually does it and it works
without problems.
(*1) Correctly, our GlyphPage implementation treats line-break characters
as whitespace.
I filed a bug (*2) in webkit.org and sent a review request to fix this
issue to Webkit.
(*2) https://bugs.webkit.org/show_bug.cgi?id=23786
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