rough font extract!

roms/ff_import.py

@@ -0,0 +1,37 @@
+#!/usr/bin/python
+
+import fontforge
+import tempfile
+import os
+import re
+
+
+font = fontforge.font()
+font.fontname = "Apple410"
+base = "alpha"
+matcher = re.compile(r"{}_([0-9a-f][0-9a-f]).svg".format(base))
+
+for path in os.listdir('.'):
+    m = matcher.match(path)
+    if m:
+        idx = int(m.group(1),16)
+        print "{} : {}".format(idx,path)
+        # fontforge can't handle % colors, so we need to hack those out. Luckily, these are the only %
+        # characters in the files, so...
+        tf = tempfile.NamedTemporaryFile(suffix='.svg')
+        inf = open(path)
+        for c in inf.read():
+            if c != '%':
+                tf.write(c)
+        tf.flush()
+        font.createChar(idx)
+        font[idx].importOutlines(tf.name)
+        tf.close()
+        inf.close()
+
+print "glyph count {}".format(len(font))
+#print font.createChar(0x41)
+#font[0x41].importOutlines("alpha_41.svg")
+
+font.save("Apple410.ttf")
+

roms/font_extract.py

@@ -27,12 +27,13 @@ def get_char(ft,off):
 
 def unpack_byte(b):
     "convert two 4-bit signed packed numbers to a tuple"
-    def sign4b(x):
-        # not... quite two's complement
-        if x > 8:
-            return x - 16
-        return x
-    return (sign4b(b>>4), sign4b(b % 16))
+    # this packing is... unusual.
+    x = b >> 4
+    y = b % 16
+    if y > 8: # now the weird
+        x -= 1
+        y -= 16
+    return (x,y)
 
 # H:W for a char is 3:2
 def unpack_coords(b,xscale=66,yscale=100,xoff=10,yoff=10):
@@ -41,10 +42,10 @@ def unpack_coords(b,xscale=66,yscale=100,xoff=10,yoff=10):
     return (x*xscale + xoff, (8 - y)*yscale + yoff)
 
 def build_char_file(path, ft, offset):
-    surf = cairo.SVGSurface(path, 1000, 1000)
+    surf = cairo.SVGSurface(path, 1000, 1220)
     c = cairo.Context(surf)
     d = list(get_char(ft, offset))
-    c.set_source_rgb(0, 0, 0)
+    #c.set_source_rgb(0.0, 0.0, 0.0)
     c.set_line_width(20)
     c.set_line_cap(cairo.LINE_CAP_ROUND)
     c.set_line_join(cairo.LINE_JOIN_ROUND)