third_party/blink/web_tests/external/wpt/mathml/tools/radicals.py

#!/usr/bin/python

from utils import mathfont
import fontforge

def createStretchyRadical(aFont):
    radicalCodePoint = 0x221a
    mathfont.createSquareGlyph(aFont, radicalCodePoint)
    g = aFont.createChar(-1, "size1")
    mathfont.drawRectangleGlyph(g, mathfont.em, 2 * mathfont.em, 0)
    g = aFont.createChar(-1, "size2")
    mathfont.drawRectangleGlyph(g, mathfont.em, 3 * mathfont.em, 0)
    g = aFont.createChar(-1, "size3")
    mathfont.drawRectangleGlyph(g, mathfont.em, 4 * mathfont.em, 0)
    overlap = mathfont.em / 2
    aFont[radicalCodePoint].verticalVariants = "radical size1 size2 size3"
    aFont[radicalCodePoint].verticalComponents = \
        (("size2", False, 0, mathfont.em, 3 * mathfont.em), \
         ("size1", True, mathfont.em, mathfont.em, 2 * mathfont.em))

v1 = 25
v2 = 1 * mathfont.em
f = mathfont.create("radical-degreebottomraisepercent%d-rulethickness%d" % (v1, v2))
createStretchyRadical(f)
f.math.RadicalDegreeBottomRaisePercent = v1
f.math.RadicalDisplayStyleVerticalGap = 0
f.math.RadicalExtraAscender = 0
f.math.RadicalKernAfterDegree = 0
f.math.RadicalKernBeforeDegree = 0
f.math.RadicalRuleThickness = v2
f.math.RadicalVerticalGap = 0
mathfont.save(f)

v1 = 7 * mathfont.em
v2 = 1 * mathfont.em
f = mathfont.create("radical-displaystyleverticalgap%d-rulethickness%d" % (v1, v2))
createStretchyRadical(f)
f.math.RadicalDegreeBottomRaisePercent = 0
f.math.RadicalDisplayStyleVerticalGap = v1
f.math.RadicalExtraAscender = 0
f.math.RadicalKernAfterDegree = 0
f.math.RadicalKernBeforeDegree = 0
f.math.RadicalRuleThickness = v2
f.math.RadicalVerticalGap = 0
mathfont.save(f)

v1 = 3 * mathfont.em
v2 = 1 * mathfont.em
f = mathfont.create("radical-extraascender%d-rulethickness%d" % (v1, v2))
createStretchyRadical(f)
f.math.RadicalDegreeBottomRaisePercent = 0
f.math.RadicalDisplayStyleVerticalGap = 0
f.math.RadicalExtraAscender = v1
f.math.RadicalKernAfterDegree = 0
f.math.RadicalKernBeforeDegree = 0
f.math.RadicalRuleThickness = v2
f.math.RadicalVerticalGap = 0
mathfont.save(f)

v1 = 5 * mathfont.em
v2 = 1 * mathfont.em
f = mathfont.create("radical-kernafterdegreeminus%d-rulethickness%d" % (v1, v2))
createStretchyRadical(f)
f.math.RadicalDegreeBottomRaisePercent = 0
f.math.RadicalDisplayStyleVerticalGap = 0
f.math.RadicalExtraAscender = 0
f.math.RadicalKernAfterDegree = -v1
f.math.RadicalKernBeforeDegree = 0
f.math.RadicalRuleThickness = v2
f.math.RadicalVerticalGap = 0
mathfont.save(f)

v1 = 4 * mathfont.em
v2 = 1 * mathfont.em
f = mathfont.create("radical-kernbeforedegree%d-rulethickness%d" % (v1, v2))
createStretchyRadical(f)
f.math.RadicalDegreeBottomRaisePercent = 0
f.math.RadicalDisplayStyleVerticalGap = 0
f.math.RadicalExtraAscender = 0
f.math.RadicalKernAfterDegree = 0
f.math.RadicalKernBeforeDegree = v1
f.math.RadicalRuleThickness = v2
f.math.RadicalVerticalGap = 0
mathfont.save(f)

v = 8 * mathfont.em
f = mathfont.create("radical-rulethickness%d" % v)
createStretchyRadical(f)
f.math.RadicalDegreeBottomRaisePercent = 0
f.math.RadicalDisplayStyleVerticalGap = 0
f.math.RadicalExtraAscender = 0
f.math.RadicalKernAfterDegree = 0
f.math.RadicalKernBeforeDegree = 0
f.math.RadicalRuleThickness = v
f.math.RadicalVerticalGap = 0
mathfont.save(f)

v1 = 6 * mathfont.em
v2 = 1 * mathfont.em
f = mathfont.create("radical-verticalgap%d-rulethickness%d" % (v1, v2))
createStretchyRadical(f)
f.math.RadicalDegreeBottomRaisePercent = 0
f.math.RadicalDisplayStyleVerticalGap = 0
f.math.RadicalExtraAscender = 0
f.math.RadicalKernAfterDegree = 0
f.math.RadicalKernBeforeDegree = 0
f.math.RadicalRuleThickness = v2
f.math.RadicalVerticalGap = v1
mathfont.save(f)