Fototoon: font size is wrong in xo

[godiard]

The font size in the xo is not consistent with the font size in other activities, like Paint or Write. Probably need calculate the size according to dpi.

If we change it, need check we not break files created with older Fototoon versions, then we should try recalculate the old values. The file format have a version, we need check the version and recalculate if needed.

[humitos]

Useful documentation:

• ​http://www.pygtk.org/docs/pygtk/class-pangocairocairofontmap.html

[humitos]

I tried changing the resolution in the pangocairo.CairoFontMap but it didn't work: historyactivity.py

import pangocairo
font_map_default = pangocairo.cairo_font_map_get_default()
font_map_default.set_resolution(200)

[humitos]

Patch to manage fonts with pango

[humitos]

I've just uploaded a patch that change the way that fonts are managed. This is because "​cairo fonts are not designed to be used in production" and besides we need to set the DPI font depending on the screen that the activity is running.

For example, in my Desktop PC a value of 95 DPI is used and in the XO a value of 200 DPI is used. Those values are taken from gtk.settings_get_default().get_property('gtk-xft-dpi') but there is a problem with this: a value of 200 is too big for the XO display so the font is shown too big. This value should be near to 170 / 175 (I got this value comparing the 12 points font size in Write activity with the 12 points font size in FotoToon activity)

On the other hand, there are some regression issues with this patch. They are mentioned on the commit message as well:

• 'Up' and 'Down' keys do not work to move between text lines
• The user's cursor is not shown when a globe text is being edited
• The ability to expand just vertically the globe doesn't work

So, I'm not sure what I should do with this patch (apply or not until the regression issues were fixed) and how to solve the DPI issue.

[godiard]

The change needed is bigger than what we can do for 12.1.0

Moved to 12.2.0.

[humitos]

Well, the "magic number" here is 133 for the DPI.

I got this number after a talk with Martin Langhoff while I was porting Typing Turtle and it's related with the XO's Display

• ​http://wiki.laptop.org/go/Display

[humitos]

This new patch solves the issue related with the DPI fonts on the XO

[godiard]

Fixed in Fototoon 14