When you finish your typeface, run this and look to the font overview for a congratulatory message.

i_finished_the_typeface.py

# menuTitle: I Finished the Typeface.

from mojo.UI import CurrentFontWindow
import math
import time

f = CurrentFont()
fo = CurrentFontWindow().fontOverview
v  = fo.getGlyphCollection().getGlyphCellView()

cw = v.getCellSize()[0]
vw = v.frameSize().width
vh = v.frameSize().height

color_choice = (0,0,1,1)

pattern = '''..   .  .....  ..   .     ..    ..  ....  ......  ......     ...... .....  ..   . ...... 
..   . ..   .. ..   .     ...  ... .   .. ..   .. ..         ..    ..   .. ...  .   ..    
 ....  ..   .. ..   .     . ... .. ...... ..   .. .....      ..... ..   .. . .. .   ..    
  ..   ..   .. ..   .     .  .  .. .   .. ..   .. ..         ..    ..   .. .  ...   ..    
  ..   ..   .. ..   .     .     .. .   .. ..   .. ..         ..    ..   .. .   ..   ..    
  ..    .....   ....      .     .. .   .. ......  ......     ..     .....  .    .   ..
'''

cells_per_row = math.floor(vw/cw)
rows_with_gnames = {}


i = 0
row_num = 0
g_list = []
for g_name in f.glyphOrder:
    g_list.append(g_name)
    i += 1
    if i >= cells_per_row:
        rows_with_gnames.update({row_num: g_list})
        i = 0
        g_list = []
        row_num += 1
        
# save the colors you already have
names_and_colors = {}
for g_name in f.glyphOrder:
    names_and_colors.update({g_name: f[g_name].markColor})
        
for g in f:
    g.markColor = None
        
frames = int(len(pattern.split("\n")[1])) + cells_per_row

# paint the words
for frame_i in range(frames):
    
    for row_num, g_names in rows_with_gnames.items():

        # only do the first few rows
        if row_num > len(pattern.split("\n")) - 1:
            break
    
        line = " "*cells_per_row + pattern.split("\n")[row_num] + " "*100
        line = line[frame_i:]
    
        letter_i = 0
        for letter in line:
            g = f[g_names[letter_i]]
            g.markColor = None
            if letter == ".":                
                g.markColor = color_choice

            letter_i += 1
            # can only do some of the message at a time
            if letter_i > len(g_names) - 1:
                break
    
    # for some reason, printing something is necessary if you want to see each frame?
    print("YOU DID IT.")
    
    
# restore the mark colors you had before
for g_name, color in names_and_colors.items():
    f[g_name].markColor = color