Loading a font

[davelab6]

• The Number 2 feature is loading a previously saved font (in source format)

[YashAgarwal]

loading the ufo is done using defcon

self.main_path = "ufo/sample.ufo"
self.main_font = Font(self.main_path)       

for some ufo files this fails and gives the error

Error: defcon.errors.DefconError: the kerning data is not valid

saving a ufo file is also done through defcon

self.main_font.save(file_name)

but I'm getting the same error as above for all the ufo files I tried

[YashAgarwal]

Using Object Chooser I am not able to see the files corresponding to the following mime types

application/x-font-opentype
application/font-sfnt
application/x-plist
application/xml
application/octet-stream

I have added all of them in my activity.info file

and here's how I'm calling the Object Chooser dialog

try:
    chooser = ObjectChooser(
        parent=self,
        what_filter=self.get_bundle_id(),
        filter_type=FILTER_TYPE_MIME_BY_ACTIVITY)
except:
    chooser = ObjectChooser(parent=self,
                            what_filter=mime.GENERIC_TYPE_TEXT)

I only see the above-mentioned file types if I select the Anything filter in the Object Chooser dialog

[YashAgarwal]

I ran Gio.content_type_guess("file.plist", None)[0] which gives the output application/octet-stream

[davelab6]

Can you set the dialog to open with 'Anything' preselected?

If not, I guess the OS has a mime registry that lacks definitions for these mime types. Perhaps @quozl knows how OLPC OS mime types are defined, and can suggest how you might be able to get these added to the next release...

Or, you could use application/zip which should allow you to pick .ufoz files - this is cutting edge technology, specified in draft form at http://unifiedfontobject.org/roadmap , but I think it would be good for Sugar as its more compact on-disk.

Then with the file object returned by the ObjectChooser(), you can unzip it with Python, and then deal with its files directly, I guess?

[YashAgarwal]

Can you set the dialog to open with 'Anything' preselected?

I don't know the syntax for this, but I'll look for it

Or, you could use application/zip which should allow you to pick .ufoz files - this is cutting edge technology, specified in draft form at http://unifiedfontobject.org/roadmap , but I think it would be good for Sugar as its more compact on-disk.

Then with the file object returned by the ObjectChooser(), you can unzip it with Python, and then deal with its files directly, I guess?

This sounds doable, I'll start with this then

[quozl]

OLPC OS on Fedora 18 and also Ubuntu 16.04 lack any definition of;

• MIME types application/x-font-opentype, application/font-sfnt or application/x-plist,
• file types .plist, or .ufo.

Don't restrict your activity to a presumed future operating system release.

Use a local MIME registry. This is to reside in ~/.local/share/mime and may contain magic, globs or other files. strace -e open has been used to prove.

You might select relevant lines from a later version of /usr/share/file/magic that describe your file formats, and add them to ~/.local/share/mime/magic under control of the activity.

[davelab6]

@YashAgarwal is the ufo zip format working for load and save?

[davelab6]

It work!