1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/reftests/fonts/math/generate.py Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,231 @@
1.4 +#!/usr/bin/python
1.5 +# vim: set shiftwidth=4 tabstop=8 autoindent expandtab:
1.6 +# This Source Code Form is subject to the terms of the Mozilla Public
1.7 +# License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 +# file, You can obtain one at http://mozilla.org/MPL/2.0/.
1.9 +
1.10 +# For general fontforge documentation, see:
1.11 +# http://fontforge.sourceforge.net/
1.12 +# For fontforge scripting documentation, see:
1.13 +# http://fontforge.sourceforge.net/scripting-tutorial.html
1.14 +# http://fontforge.sourceforge.net/scripting.html
1.15 +# and most importantly:
1.16 +# http://fontforge.sourceforge.net/python.html
1.17 +
1.18 +# To install what you need, on Ubuntu,
1.19 +# sudo apt-get install python-fontforge
1.20 +
1.21 +from __future__ import print_function
1.22 +import fontforge
1.23 +
1.24 +em = 1000
1.25 +
1.26 +def newMathFont(aName):
1.27 + print("Generating %s.otf..." % aName, end="")
1.28 + mathFont = fontforge.font()
1.29 + mathFont.fontname = aName
1.30 + mathFont.familyname = aName
1.31 + mathFont.fullname = aName
1.32 + mathFont.copyright = "Copyright (c) 2014 Mozilla Corporation"
1.33 + mathFont.encoding = "UnicodeFull"
1.34 +
1.35 + # Create a space character. Also force the creation of some MATH subtables
1.36 + # so that OTS will not reject the MATH table.
1.37 + g = mathFont.createChar(ord(" "), "space")
1.38 + g.width = em
1.39 + g.italicCorrection = 0
1.40 + g.topaccent = 0
1.41 + g.mathKern.bottomLeft = tuple([(0,0)])
1.42 + g.mathKern.bottomRight = tuple([(0,0)])
1.43 + g.mathKern.topLeft = tuple([(0,0)])
1.44 + g.mathKern.topRight = tuple([(0,0)])
1.45 + mathFont[ord(" ")].horizontalVariants = "space"
1.46 + mathFont[ord(" ")].verticalVariants = "space"
1.47 + return mathFont
1.48 +
1.49 +def saveMathFont(aFont):
1.50 + aFont.em = em
1.51 + aFont.ascent = aFont.descent = em/2
1.52 + aFont.hhea_ascent = aFont.os2_typoascent = aFont.os2_winascent = em/2
1.53 + aFont.descent = aFont.hhea_descent = em/2
1.54 + aFont.os2_typodescent = aFont.os2_windescent = em/2
1.55 + aFont.hhea_ascent_add = aFont.hhea_descent_add = 0
1.56 + aFont.os2_typoascent_add = aFont.os2_typodescent_add = 0
1.57 + aFont.os2_winascent_add = aFont.os2_windescent_add = 0
1.58 + aFont.os2_use_typo_metrics = True
1.59 + aFont.generate(aFont.fontname + ".otf")
1.60 + print(" done.")
1.61 +
1.62 +################################################################################
1.63 +# Glyph variants and constructions
1.64 +f = newMathFont("stretchy")
1.65 +nvariants = 3
1.66 +
1.67 +# Draw boxes for the size variants and glues
1.68 +for i in range(0, nvariants):
1.69 + s = em * (i + 1)
1.70 +
1.71 + g = f.createChar(-1, "h%d" % i)
1.72 + p = g.glyphPen()
1.73 + p.moveTo(0, -em)
1.74 + p.lineTo(0, em)
1.75 + p.lineTo(s, em)
1.76 + p.lineTo(s, -em)
1.77 + p.closePath()
1.78 + g.width = s
1.79 +
1.80 + g = f.createChar(-1, "v%d" % i)
1.81 + p = g.glyphPen()
1.82 + p.moveTo(0, 0)
1.83 + p.lineTo(0, s)
1.84 + p.lineTo(2 * em, s)
1.85 + p.lineTo(2 * em, 0)
1.86 + p.closePath();
1.87 + g.width = 2 * em
1.88 +
1.89 +# Draw some pieces for stretchy operators
1.90 +s = em * nvariants
1.91 +
1.92 +g = f.createChar(-1, "left")
1.93 +p = g.glyphPen()
1.94 +p.moveTo(0, -2 * em)
1.95 +p.lineTo(0, 2 * em)
1.96 +p.lineTo(s, em)
1.97 +p.lineTo(s, -em)
1.98 +p.closePath();
1.99 +g.width = s
1.100 +
1.101 +g = f.createChar(-1, "right")
1.102 +p = g.glyphPen()
1.103 +p.moveTo(0, -em)
1.104 +p.lineTo(0, em)
1.105 +p.lineTo(s, 2 * em)
1.106 +p.lineTo(s, -2 * em)
1.107 +p.closePath();
1.108 +g.width = s
1.109 +
1.110 +g = f.createChar(-1, "hmid")
1.111 +p = g.glyphPen()
1.112 +p.moveTo(0, -em)
1.113 +p.lineTo(0, em)
1.114 +p.lineTo(s, 2 * em)
1.115 +p.lineTo(2 * s, em)
1.116 +p.lineTo(2 * s, -em)
1.117 +p.lineTo(s, -2 * em)
1.118 +p.closePath();
1.119 +g.width = 2 * s
1.120 +
1.121 +g = f.createChar(-1, "bottom")
1.122 +p = g.glyphPen()
1.123 +p.moveTo(0, 0)
1.124 +p.lineTo(0, s)
1.125 +p.lineTo(2 * em, s)
1.126 +p.lineTo(4 * em, 0)
1.127 +p.closePath();
1.128 +g.width = 4 * em
1.129 +
1.130 +g = f.createChar(-1, "top")
1.131 +p = g.glyphPen()
1.132 +p.moveTo(0, 0)
1.133 +p.lineTo(4 * em, 0)
1.134 +p.lineTo(2 * em, -s)
1.135 +p.lineTo(0, -s)
1.136 +p.closePath();
1.137 +g.width = 4 * em
1.138 +
1.139 +g = f.createChar(-1, "vmid")
1.140 +p = g.glyphPen()
1.141 +p.moveTo(0, s)
1.142 +p.lineTo(2 * em, s)
1.143 +p.lineTo(4 * em, 0)
1.144 +p.lineTo(2 * em, -s)
1.145 +p.lineTo(0, -s)
1.146 +p.closePath();
1.147 +g.width = 3 * em
1.148 +
1.149 +# Create small rectangle of various size for some exotic arrows that are
1.150 +# unlikely to be stretchable with standard fonts.
1.151 +hstretchy = [
1.152 + 0x219C, # leftwards wave arrow
1.153 + 0x219D, # rightwards wave arrow
1.154 + 0x219E, # leftwards two headed arrow
1.155 + 0x21A0, # rightwards two headed arrow
1.156 + 0x21A2 # leftwards arrow with tail
1.157 +]
1.158 +vstretchy = [
1.159 + 0x219F, # upwards two headed arrow
1.160 + 0x21A1, # downwards two headed arrow
1.161 + 0x21A5, # upwards arrow from bar
1.162 + 0x21A7, # downwards arrow from bar
1.163 + 0x21A8 # up down arrow with base
1.164 +]
1.165 +for i in range(0, 1 + nvariants + 1):
1.166 + s = (i + 1) * em/10
1.167 +
1.168 + g = f.createChar(hstretchy[i])
1.169 + p = g.glyphPen()
1.170 + p.moveTo(0, -em/10)
1.171 + p.lineTo(0, em/10)
1.172 + p.lineTo(s, em/10)
1.173 + p.lineTo(s, -em/10)
1.174 + p.closePath()
1.175 + g.width = s
1.176 +
1.177 + g = f.createChar(vstretchy[i])
1.178 + p = g.glyphPen()
1.179 + p.moveTo(0, 0)
1.180 + p.lineTo(0, s)
1.181 + p.lineTo(2 * em/10, s)
1.182 + p.lineTo(2 * em/10, 0)
1.183 + p.closePath();
1.184 + g.width = 2 * em/10
1.185 +
1.186 +# hstretchy[0] and vstretchy[0] have all the variants and the components. The others only have one of them.
1.187 +s = em * nvariants
1.188 +
1.189 +f[hstretchy[0]].horizontalVariants = "uni219C h0 h1 h2"
1.190 +f[hstretchy[0]].horizontalComponents = (("left", False, 0, 0, s), \
1.191 +("h2", True, 0, 0, s), ("hmid", False, 0, 0, 2 * s), ("h2", True, 0, 0, s), \
1.192 +("right", False, 0, 0, s))
1.193 +
1.194 +f[hstretchy[1]].horizontalVariants = "uni219D h0"
1.195 +f[hstretchy[2]].horizontalVariants = "uni219E h1"
1.196 +f[hstretchy[3]].horizontalVariants = "uni21A0 h2"
1.197 +f[hstretchy[4]].horizontalVariants = "uni21A2 h2"
1.198 +f[hstretchy[4]].horizontalComponents = f[hstretchy[0]].horizontalComponents
1.199 +
1.200 +f[vstretchy[0]].verticalVariants = "uni219F v0 v1 v2"
1.201 +f[vstretchy[0]].verticalComponents = (("bottom", False, 0, 0, s), \
1.202 +("v2", True, 0, 0, s), ("vmid", False, 0, 0, 2 * s), ("v2", True, 0, 0, s), \
1.203 +("top", False, 0, 0, s))
1.204 +
1.205 +f[vstretchy[1]].verticalVariants = "uni21A1 v0"
1.206 +f[vstretchy[2]].verticalVariants = "uni21A5 v1"
1.207 +f[vstretchy[3]].verticalVariants = "uni21A7 v2"
1.208 +f[vstretchy[4]].verticalVariants = "uni21A8"
1.209 +f[vstretchy[4]].verticalComponents = f[vstretchy[0]].verticalComponents
1.210 +
1.211 +################################################################################
1.212 +# Testing DisplayOperatorMinHeight
1.213 +f.math.DisplayOperatorMinHeight = 8 * em
1.214 +largeop = [0x2A1B, 0x2A1C] # integral with overbar/underbar
1.215 +
1.216 +# Draw boxes of size 1, 2, 7, 8, 9em.
1.217 +for i in [1, 2, 7, 8, 9]:
1.218 + s = em * i
1.219 + if i == 1 or i == 2:
1.220 + g = f.createChar(largeop[i-1])
1.221 + else:
1.222 + g = f.createChar(-1, "L%d" % i)
1.223 + p = g.glyphPen()
1.224 + p.moveTo(0, 0)
1.225 + p.lineTo(0, s)
1.226 + p.lineTo(s, s)
1.227 + p.lineTo(s, 0)
1.228 + p.closePath();
1.229 + g.width = s
1.230 +
1.231 +f[largeop[0]].verticalVariants = "uni2A1B L7 L8 L9"
1.232 +f[largeop[1]].verticalVariants = "uni2A1C L8"
1.233 +
1.234 +saveMathFont(f)
