Add a new font to Poster and Badge Designer

akbarkz · April 24, 2025, 11:54am

Hello!

I wonder if it is possible to add new fonts to Poster and Badge Designer?
At Canonical we would like to add Ubuntu Font to the existing set. It’s publicly available and there are community members who also use this font, so it’s not only our organization.

I found this topic here which is about adding arabic fonts, but in our case our font is LTR, so it’s not the same. Also, 6 years have passed since that question was raised in that topic. I wonder if things have changed since then and if it has become easier to add a new font?

Thank you.

bpedersen2 · April 25, 2025, 7:17am

I think technically it should be possible.

Places to look at:
Add the fonts to the indico fonts package (

github.com/indico/indico

indico/legacy/pdfinterface/base.py

bc136e66f


      
                  return ((((fontsize / ratio) / ratio) / ratio) / ratio) / ratio
              elif lowerNormalHigher == 'larger':
                  return fontsize * ratio * ratio
              else:
                  return fontsize
          
          
          already_registered = False
          
          
          def setTTFonts():
              global already_registered  # noqa: PLW0603
              if already_registered:
                  return
              already_registered = True
              with as_file(files('indico_fonts')) as font_dir:
                  pdfmetrics.registerFont(TTFont('Times-Roman', os.path.join(font_dir, 'LiberationSerif-Regular.ttf')))
                  pdfmetrics.registerFont(TTFont('Times-Bold', os.path.join(font_dir, 'LiberationSerif-Bold.ttf')))
                  pdfmetrics.registerFont(TTFont('Times-Italic', os.path.join(font_dir, 'LiberationSerif-Italic.ttf')))
                  pdfmetrics.registerFont(TTFont('Times-Bold-Italic', os.path.join(font_dir, 'LiberationSerif-BoldItalic.ttf')))
                  addMapping('Times-Roman', 0, 0, 'Times-Roman')

==> add the linking to the ttf fonts

github.com/indico/indico

indico/modules/designer/pdf.py

bc136e66f


      
          from reportlab.pdfgen.canvas import Canvas
          from reportlab.platypus import Paragraph
          
          from indico.core import signals
          from indico.legacy.pdfinterface.base import setTTFonts
          from indico.modules.designer import PageOrientation
          from indico.util.signals import values_from_signal
          from indico.util.string import RichMarkup, sanitize_html, strip_tags
          
          
          FONT_STYLES = {
              'serif': ['Times-Roman', 'Times-Bold', 'Times-Italic', 'Times-Bold-Italic'],
              'courier': ['Courier', 'Courier-Bold', 'Courier-Italic', 'Courier-Bold-Italic'],
              'sans-serif': ['Sans', 'Sans-Bold', 'Sans-Italic', 'Sans-Bold-Italic'],
              'LinuxLibertine': ['LinuxLibertine', 'LinuxLibertine-Bold', 'LinuxLibertine-Italic', 'LinuxLibertine-Bold-Italic'],
              'Kochi-Mincho': ['Kochi-Mincho', 'Kochi-Mincho', 'Kochi-Mincho', 'Kochi-Mincho'],
              'Kochi-Gothic': ['Kochi-Gothic', 'Kochi-Gothic', 'Kochi-Gothic', 'Kochi-Gothic'],
              'Uming-CN': ['Uming-CN', 'Uming-CN', 'Uming-CN', 'Uming-CN']
          }
          
          ALIGNMENTS = {

==> add new entries for the UI to allow selection

akbarkz · April 25, 2025, 9:02am

Thanks for getting back @bpedersen2!
The problem is we do not have our own fork of Indico. We use a charm that utilizes the original repo. All our customizations come from either customization files or plugins.
What are our options in that case? I wonder if it’s possible to upstream this change to the original repo?

troun · April 25, 2025, 12:16pm

In theory we could expose either a plugin hook or a new config option that would let you override the fonts. cc @ThiefMaster

akbarkz · April 28, 2025, 5:27am

That would be great @troun!