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#
# This script changes the width of any glyph which width is not an even multiple of 256.
# For glyphs that are updated, the shape(s) inside the glyph are centered as well.
#
from mojo.roboFont import version
from math import ceil, floor
if __name__ == "__main__":
font = CurrentFont()
print "Fitting glyphs to EM grid at 256 %r" % font
# Strategy to use for centering a glyph when resizing its EM:
# "center" Ignore existing margins and center in EM at on integer units.
# "adjust-margins" Attempt to retain existing margins w/o centering inside EM.
centeringStrategy = 'center'
if font is not None:
for g in font:
# only consider adjusting the listed glyphs
# if g.unicode not in (0x212B, 0x005A, 0x0387):
# continue
if g.width < 2:
# ignore zero width glyph
# print 'ignoring %r -- zero width' % g
continue
if g.width % 256 == 0:
# ignore already aligned glyph
# print 'ignoring %r -- already aligned' % g
continue
width = g.width
if g.rightMargin < 128:
width = ceil(width / 256) * 256
else:
width = round(width / 256) * 256
# center glyph in EM
leftMargin = g.leftMargin
rightMargin = g.rightMargin
if centeringStrategy == 'adjust-margins':
# Adjust margins to place the glyph in the center while retaining original
# left/right margins.
widthDelta = width - g.width
leftMargin = g.leftMargin + int(floor(widthDelta / 2))
rightMargin = g.rightMargin + int(ceil(widthDelta / 2))
elif centeringStrategy == 'center':
# Read g.box (effective bounds of the glyph) and truly center the
# glyph, but we could run the risk of losing some intentionally-left or right
# aligned glyph, e.g. "|x |" -> "| x |"
if g.box is not None:
xMin, yMin, xMax, yMax = g.box
graphicWidth = xMax - xMin
leftMargin = round((width - graphicWidth) / 2)
else:
print 'Unexpected centeringStrategy value'
break
# log message
uniname = ''
if g.unicode is not None:
uniname = ' U+%04X' % g.unicode
print 'Adjusting "%s"%s from %g to %g' % (g.name, uniname, g.width, width)
# write changes to glyph
g.lib['interface.gridadjust.original'] = repr({
"rightMargin": g.rightMargin,
"leftMargin": g.leftMargin,
"width": g.width,
})
# order of assignment is probably important
g.rightMargin = int(rightMargin)
g.leftMargin = int(leftMargin)
g.width = int(width)
font.update()
else:
print "No fonts open"
print "Done"
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