Behdad Esfahbod's daily notes on GNOME, Pango, Fedora, Persian Computing, Bob Dylan, and Dan Bern!

About Me

My Photo
Name:
Location: Toronto, Ontario, Canada

Ask Google.

Contact info
Google
Hacker Emblem Become a Friend of GNOME I Power Blogger

Twitter Updates

follow me on Twitter
Archives
July 2003
August 2003
October 2003
November 2003
December 2003
March 2004
April 2004
May 2004
July 2004
August 2004
September 2004
November 2004
March 2005
April 2005
May 2005
June 2005
July 2005
August 2005
September 2005
October 2005
November 2005
December 2005
January 2006
February 2006
March 2006
April 2006
May 2006
June 2006
July 2006
August 2006
September 2006
October 2006
November 2006
December 2006
January 2007
February 2007
March 2007
April 2007
May 2007
June 2007
July 2007
August 2007
September 2007
October 2007
November 2007
December 2007
January 2008
February 2008
March 2008
April 2008
May 2008
June 2008
July 2008
August 2008
October 2008
November 2008
December 2008
January 2009
March 2009
April 2009
May 2009
June 2009
July 2009
August 2009
November 2009
December 2009
March 2010
April 2010
May 2010
June 2010
July 2010
October 2010
November 2010
April 2011
May 2011
August 2011
September 2011
October 2011
November 2011
November 2012
June 2013
January 2014
May 2015
McEs, A Hacker Life
Thursday, November 11, 2010
 CSS3 font goodness

Here's a nice blogpost from John Dagget of Firefox fame about the upcoming Firefox 4 supporting CSS3 OpenType font-feature support:

Firefox 4: OpenType font feature support

This is a direct result of the HarfBuzz code I've been working on for the past year or so. Exciting stuff for the web.

Labels: , , ,

¶ 1:40 PM   8 comments

Wednesday, May 16, 2007
 Pango OpenType Update

All other modules are ported to new OpenType API now. I really hope I've not broken any of them in the way.

In other news, Pango's Arabic module is now extended to support the N'Ko script. I believe Pango is the first Unicode rendering system to support N'Ko!

Seems like my optimization in Pango's line-breaking algorithm introduced a bug that I hope is fixed now.

Also came across this hilarious bug titled "My microwave doesn't work any more because of gnome"!

Labels: , , , , ,

¶ 8:42 AM   5 comments

Monday, May 14, 2007
 Advanced OpenType Features in Pango

Last week I worked on bringing Pango's OpenType engine into shape. Something that has been long overdue. Not anymore.

Pango can now select arbitrary OpenType script and language systems, and in near future arbitrary OpenType features too. The basic, arabic, and syriac modules are ported to use these features. More modules to follow.

Finishing off that feature is addition of another one, that pango will read env vars PANGO_LANGUAGE or LANGUAGE and use that for making better guesses to tag runs of text with languages.

Pango-OpenType

First window is rendering of Pango's test-mixed.txt using the command line pango-view tool.

Second window is the same, but with env var PANGO_LANGUAGE="en:ur". As you can notice, an Arabic font more suitable in style for Urdu is selected instead of my default Persian fonts.

Third window is vertical rendering of the same text. If you look at the last, Japanese, line, in the vertical window, the brackets around the text are correctly rotated, unlike previous versions of Pango.

This and previous works are all in Pango 1.17.0.

Labels: ,

¶ 8:48 PM   8 comments