1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
# Change upm
# Jens Kutilek 2013-01-02
from mojo.roboFont import version
def scalePoints(glyph, factor):
if version == "1.4":
# stupid workaround for bug in RoboFont 1.4
for contour in glyph:
for point in contour.points:
point.x *= factor
point.y *= factor
glyph.width *= factor
else:
glyph *= factor
def scaleGlyph(glyph, factor, scaleWidth=True, roundCoordinates=True):
if not(scaleWidth):
oldWidth = glyph.width
if len(glyph.components) == 0:
scalePoints(glyph, factor)
if roundCoordinates:
glyph.round()
else:
# save components
# this may be a tad too convoluted ...
components = []
for i in range(len(glyph.components)):
components.append(glyph.components[i])
for c in components:
glyph.removeComponent(c)
scalePoints(glyph, factor)
if roundCoordinates:
glyph.round()
# restore components
for i in range(len(components)):
newOffset = (int(round(components[i].offset[0] * factor)),
int(round(components[i].offset[1] * factor)))
glyph.appendComponent(components[i].baseGlyph, newOffset, components[i].scale)
if not(scaleWidth):
# restore width
glyph.width = oldWidth
def changeUPM(font, factor, roundCoordinates=True):
# Glyphs
for g in font:
scaleGlyph(g, factor)
for guide in g.guides:
# another thing that doesn't work in RoboFont 1.4 - 1.5.1
guide.x *= factor
guide.y *= factor
# Glyph layers
mainLayer = "foreground"
for layerName in font.layerOrder:
if layerName != mainLayer:
for g in font:
g.flipLayers(mainLayer, layerName)
scaleGlyph(g, factor, scaleWidth=False)
g.flipLayers(layerName, mainLayer)
# Kerning
if font.kerning:
font.kerning.scale(factor)
if roundCoordinates:
if not version in ["1.4", "1.5", "1.5.1"]:
font.kerning.round(1)
else:
print "WARNING: kerning values cannot be rounded to integer in this RoboFont version"
# TODO: Change positioning feature code?
# Vertical dimensions
font.info.descender = int(round(font.info.descender * factor))
font.info.xHeight = int(round(font.info.xHeight * factor))
font.info.capHeight = int(round(font.info.capHeight * factor))
font.info.ascender = int(round(font.info.ascender * factor))
# Finally set new UPM
font.info.unitsPerEm = newUpm
font.update()
if __name__ == "__main__":
from robofab.interface.all.dialogs import AskString
print "Change Units Per Em"
if CurrentFont() is not None:
oldUpm = CurrentFont().info.unitsPerEm
newUpm = CurrentFont().info.unitsPerEm
try:
newUpm = int(AskString("New units per em size?", oldUpm))
except:
pass
if newUpm == oldUpm:
print " Not changing upm size."
else:
factor = float(newUpm) / oldUpm
print " Scaling all font measurements by", factor
changeUPM(CurrentFont(), factor)
else:
print " Open a font first to change upm, please."
print " Done."
|
