[webkit-dev] WebKit Text Rendering

[Eric Seidel]

Honestly, I don't know.  At least not w/o reading findNextLineBreak.  It's
not a part of the code I've had to look into in great detail yet.

You can ask on #webkit, but it's better if you just read the source
yourself:
http://trac.webkit.org/browser/trunk/Source/WebCore/rendering/RenderBlockLineLayout.cpp#L1676

-eric

On Wed, Apr 20, 2011 at 11:13 AM, Soheil Servati Beiragh <sservati at yahoo.com
> wrote:

> Ok Eric but Can you also tell me in brief how it decides to go to the next
> line? Does the function uses glyph metrics to for example calculate the
> width of each character and the decides how many will reach the limit? Or
> there so kind of approximation? Also if it do use glyph metrics can you
> guide to the variable to pointer to where it gets its needed info?
>
> I'm going through the function but I'm at beginning of the road.
>
> *Soheil Servati Beiragh*
>
> *PhD Candidate, ECE Department,
> *
>
> *Research Center for Integrated Microsystems,*
> *University of Windsor.*
> Room 268 Essex Hall
>
> 401 Sunset Avenue
> Windsor, Ontario
> Canada, N9B 3P4
>
> Phone: 519-253-3000 Ext 3396
>
> Email: servati at uwindsor.ca
>
>
> --- On *Tue, 19/4/11, Eric Seidel <eric at webkit.org>* wrote:
>
>
> From: Eric Seidel <eric at webkit.org>
> Subject: Re: [webkit-dev] WebKit Text Rendering
> To: sservati at yahoo.com
> Cc: webkit-dev at lists.webkit.org
> Date: Tuesday, 19 April, 2011, 10:56 AM
>
>
> Line breaking is done in findNextLineBreak in RenderBlockLineLayout.
>
> There is a talk on Youtube from me which touches on some of this.
>
> The RenderTexts get broken into lines, then the bidi algorithm is run and
> then line boxes are created.  The text contents of the line boxes are passed
> individually to the paint functions at paint time.
>
> -eric
>
> On Tue, Apr 19, 2011 at 7:48 AM, Soheil Servati Beiragh <
> sservati at yahoo.com <http://mc/compose?to=sservati@yahoo.com>> wrote:
>
> Hi
>
> I'm working on text rendering of WebKit. I tried to find my path through it
> and I was a bit successful but I'm wondering in a gtk build when there is a
> large paragraph of text to be shown on screen where does the length of each
> line decided? I know that to show text a drawText function in the Font.cpp
> is called but the issue is it gets a string for each line, my question is
> for a large paragraph where does the code cuts the text in lines and decides
> the length and prepare it for drawText function?
>
> Thanks
>
> *Soheil Servati Beiragh*
>
> *PhD Candidate, ECE Department,
> *
>
> *Research Center for Integrated Microsystems,*
> *University of Windsor.*
> Room 268 Essex Hall
>
> 401 Sunset Avenue
> Windsor, Ontario
> Canada, N9B 3P4
>
> Phone: 519-253-3000 Ext 3396
>
> Email: servati at uwindsor.ca <http://mc/compose?to=servati@uwindsor.ca>
>
> _______________________________________________
> webkit-dev mailing list
> webkit-dev at lists.webkit.org<http://mc/compose?to=webkit-dev@lists.webkit.org>
> http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-dev/attachments/20110420/c07c11ad/attachment.html>