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108 lines
3.4 KiB
Python
108 lines
3.4 KiB
Python
# Change upm
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# Jens Kutilek 2013-01-02
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from mojo.roboFont import version
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def scalePoints(glyph, factor):
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if version == "1.4":
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# stupid workaround for bug in RoboFont 1.4
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for contour in glyph:
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for point in contour.points:
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point.x *= factor
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point.y *= factor
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glyph.width *= factor
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else:
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glyph *= factor
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def scaleGlyph(glyph, factor, scaleWidth=True, roundCoordinates=True):
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if not(scaleWidth):
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oldWidth = glyph.width
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if len(glyph.components) == 0:
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scalePoints(glyph, factor)
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if roundCoordinates:
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glyph.round()
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else:
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# save components
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# this may be a tad too convoluted ...
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components = []
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for i in range(len(glyph.components)):
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components.append(glyph.components[i])
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for c in components:
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glyph.removeComponent(c)
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scalePoints(glyph, factor)
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if roundCoordinates:
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glyph.round()
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# restore components
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for i in range(len(components)):
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newOffset = (int(round(components[i].offset[0] * factor)),
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int(round(components[i].offset[1] * factor)))
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glyph.appendComponent(components[i].baseGlyph, newOffset, components[i].scale)
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if not(scaleWidth):
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# restore width
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glyph.width = oldWidth
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def changeUPM(font, factor, roundCoordinates=True):
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# Glyphs
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for g in font:
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scaleGlyph(g, factor)
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for guide in g.guides:
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# another thing that doesn't work in RoboFont 1.4 - 1.5.1
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guide.x *= factor
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guide.y *= factor
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# Glyph layers
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mainLayer = "foreground"
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for layerName in font.layerOrder:
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if layerName != mainLayer:
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for g in font:
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g.flipLayers(mainLayer, layerName)
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scaleGlyph(g, factor, scaleWidth=False)
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g.flipLayers(layerName, mainLayer)
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# Kerning
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if font.kerning:
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font.kerning.scale(factor)
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if roundCoordinates:
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if not version in ["1.4", "1.5", "1.5.1"]:
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font.kerning.round(1)
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else:
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print "WARNING: kerning values cannot be rounded to integer in this RoboFont version"
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# TODO: Change positioning feature code?
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# Vertical dimensions
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font.info.descender = int(round(font.info.descender * factor))
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font.info.xHeight = int(round(font.info.xHeight * factor))
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font.info.capHeight = int(round(font.info.capHeight * factor))
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font.info.ascender = int(round(font.info.ascender * factor))
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# Finally set new UPM
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font.info.unitsPerEm = newUpm
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font.update()
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if __name__ == "__main__":
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from robofab.interface.all.dialogs import AskString
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print "Change Units Per Em"
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if CurrentFont() is not None:
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oldUpm = CurrentFont().info.unitsPerEm
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newUpm = CurrentFont().info.unitsPerEm
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try:
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newUpm = int(AskString("New units per em size?", oldUpm))
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except:
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pass
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if newUpm == oldUpm:
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print " Not changing upm size."
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else:
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factor = float(newUpm) / oldUpm
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print " Scaling all font measurements by", factor
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changeUPM(CurrentFont(), factor)
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else:
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print " Open a font first to change upm, please."
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print " Done."
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