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