Math at Firefox OS

Published on March 16, 2015.

Last year, before I started my Google Summer of Code project I wrote a few blog posts about hacking Firefox OS:

• Atualizando Alcatel One Touch Fire <../../../2014/05/19/atualizando_alcatel>
• Compilando Firefox OS para o Alcatel One Touch Fire <../../../2014/05/20/compilando_fxos>
• Compilando o Emulador do Firefox OS <../../../2014/05/26/compilando_firefox_os_emulator>
• Atualizando o Gaia do Firefox OS <../../../2014/05/30/atualizando_gaia>
• Another Hacking Gaia Tutorial <../../../2014/06/06/another_hacking_gaia_tutorial>

One thing that I didn’t write was how to add math support and you will find in this post.

First Time

Before you continue, please install the software listed here.

Clone B2G repository :

$ git clone git://github.com/mozilla-b2g/B2G.git

and change the current directory to B2G directory :

$ cd B2G

Configure the files for the device you have :

$ ./config.sh device-name

where device-name is the name of your device.

Gecko has native support to MathML and because of it Firefox OS also has it. The problem is that to math be correctly display you need fonts that support math. To add the fonts :

$ cd external/moztt
$ git remote add math git://github.com/fred-wang/moztt
$ git fetch math
$ git checkout math/master
$ git checkout -b add-math-support
$ git rebase b2g/master
$ cd -

You are almost ready to build your Firefox OS image. Before you do it you need to connect your device with your machine using USB. To check that your computer find your device :

$ adb devices

Now you can build your Firefox OS image :

$ ./build.sh

Second Time

If you already built your Firefox OS image once you should follow this steps.

Update the B2G repository :

$ git pull origin master

and update the files specific for your device :

$ ./repo sync

When update the files specific for your device, your previous changes to the fonts will be revert and you need to redo it :

$ cd external/moztt
$ git checkout add-math-support
$ git rebase b2g/master
$ cd -

And you are ready to build your Firefox OS image :

$ ./build.sh

Flashing your Image

Once you built your own Firefox OS image you can flash it to your device :

$ ./flash.sh

Congrats. You are using your own image of Firefox OS.

Tip

If you have two or more devices, use different directories for each device. I have hamachi and flatfish and what I did was :

$ git clone git://github.com/mozilla-b2g/B2G.git B2G-hamachi
$ cd B2G-hamachi
$ ./config.sh hamachi
$ cd -
$ git clone git://github.com/mozilla-b2g/B2G.git B2G-flatfish
$ cd B2G-flatfish
$ ./config.sh flatfish

References

MDN has many useful informations.

Tags:

• Ftb