Allow specifying new font name, fix glyph width

Two bugfixes:

  1. Allow user to specify new font name. Default if no new name is
     specified will be "(old name) Dotted". This is not compliant with
     the OFL as it reuses the Reserved Font Name, but it allows you to
     get up and running quickly.

  2. Fix bug where glyph width wasn't copied to new fonts.

Author: rmunn

extractpoints.py

@@ -520,8 +520,21 @@ def create_dotted_font(fname):
     input_font = silent_fontopen(fname)
     global args
     args.em = input_font.em
+    if args.font_name:
+        new_familyname = args.font_name
+    else:
+        new_familyname = input_font.familyname + " Dotted"
+        print("WARNING: New font name \"{}\" does NOT comply with the Open Font License!!".format(new_familyname))
+        print("Please press Enter to proceed anyway, or Ctrl-C to exit.")
+        print("By proceeding, you acknowledge that you do NOT intend to distribute this font to anyone else.")
+        raw_input()
+    new_fullname = input_font.fullname.replace(input_font.familyname, new_familyname)
+    new_fontname = new_fullname.translate(None, " \t()[]{}<>/%")
     shutil.copy2(fname, args.output)
     new_font = silent_fontopen(args.output)
+    new_font.familyname = new_familyname
+    new_font.fullname = new_fullname
+    new_font.fontname = new_fontname
     for glyphname in input_font:
         if glyphname in ('.notdef', '.null'): continue
         glyph = input_font[glyphname]
@@ -650,13 +663,18 @@ def extract_dots(glyph, show_glyph=True):
     return dots
 
 def copy_glyph(orig_glyph, new_glyph):
+    new_glyph.width = orig_glyph.width
+    new_glyph.vwidth = orig_glyph.vwidth
     dots = extract_dots(orig_glyph, args.visualize)
     for dot in dots:
         contour = circle_at(dot, size=args.radius)
         contour.is_quadratic = new_glyph.foreground.is_quadratic
         new_glyph.foreground += contour
     for anchor in orig_glyph.anchorPoints:
         new_glyph.addAnchorPoint(*anchor)
+    if args.copy_bearings:
+        new_glyph.left_side_bearing = orig_glyph.left_side_bearing
+        new_glyph.right_side_bearing = orig_glyph.right_side_bearing
     return new_glyph  # Probably not needed as the font now contains it
 
 def make_triangles_unsafe(polygon_data, holes = None):
@@ -767,6 +785,8 @@ def parse_args():
     parser.add_argument('-g', '--show-glyph', action = "store_true", help = "Show the glyph outline")
     parser.add_argument('-r', '--radius', action = "store", type = float, default = 12, help = "Radius of dots, in em units (default 12)")
     parser.add_argument('-s', '--spacing', action = "store", type = float, default = 6.0, help = "Spacing of dots, as a multiple of dot radius (default 6.0 for 600%%)")
+    parser.add_argument('-b', '--copy-bearings', action = "store_true", help = "Copy left/right side bearings of glyphs to new font (default is to calculate them automatically, use this to copy them from the old font instead)")
+    parser.add_argument('-n', '--font-name', action = "store", type = str, default = "", help = "New font name (REQUIRED if you plan to distribute this font to others, as the default is to use \"(orignal name) Dotted\", which is NOT OFL-compliant)")
     args = parser.parse_args()
     args.visualize = (args.show_triangles or args.show_lines or args.show_dots or args.show_glyph)
     if args.inputfilename is None: