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Diffstat (limited to 'xP/gen-ircfmt.awk')
| -rw-r--r-- | xP/gen-ircfmt.awk | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/xP/gen-ircfmt.awk b/xP/gen-ircfmt.awk new file mode 100644 index 0000000..cc9a5a0 --- /dev/null +++ b/xP/gen-ircfmt.awk @@ -0,0 +1,89 @@ +# gen-ircfmt.awk: generate a supplementary font for IRC formatting characters +# +# Copyright (c) 2022, Přemysl Eric Janouch <p@janouch.name> +# SPDX-License-Identifier: 0BSD +# +# Usage: awk -v Output=static/ircfmt.woff2 -f gen-ircfmt.awk +# Clean up SVG byproducts yourself. + +BEGIN { + if (!Output) { + print "Error: you must specify the output filename" + exit 1 + } +} + +function glyph(name, code, path, filename, actions, cmd) { + filename = Output "." name ".svg" + + # Inkscape still does a terrible job at the stroke-to-path conversion. + actions = \ + "select-by-id:group;" \ + "selection-ungroup;" \ + "select-clear;" \ + "select-by-id:path;" \ + "object-stroke-to-path;" \ + "select-by-id:clip;" \ + "path-intersection;" \ + "select-all;" \ + "path-combine;" \ + "export-overwrite;" \ + "export-filename:" filename ";" \ + "export-do" + + # These dimensions fit FontForge defaults, and happen to work well. + cmd = "inkscape --pipe --actions='" actions "'" + print "<?xml version='1.0' encoding='UTF-8' standalone='no'?>\n" \ + "<svg version='1.1' xmlns='http://www.w3.org/2000/svg'\n" \ + " width='1000' height='1000' viewBox='0 0 1000 1000'>\n" \ + " <rect x='0' y='0' width='1000' height='1000' />\n" \ + " <g id='group' transform='translate(200 200) scale(60, 60)'>\n" \ + " <rect id='clip' x='0' y='0' width='10' height='10' />\n" \ + " <path id='path' stroke-width='2' fill='none' stroke='#fff'\n" \ + " d='" path "' />\n" \ + " </g>\n" \ + "</svg>\n" | cmd + close(cmd) + + print "Select(0u" code ")\n" \ + "Import('" filename "')" | FontForge +} + +BEGIN { + FontForge = "fontforge -lang=ff -" + print "New()" | FontForge + + # Designed a 10x10 raster, going for maximum simplicity. + glyph("B", "02", "m 6,5 c 0,0 2,0 2,2 0,2 -2,2 -2,2 h -3 v -8 h 2.5 c 0,0 2,0 2,2 0,2 -2,2 -2,2 h -2 Z") + glyph("C", "03", "m 7.6,7 A 3,4 0 0 1 4.25,8.875 3,4 0 0 1 2,5 3,4 0 0 1 4.25,1.125 3,4 0 0 1 7.6,3") + glyph("I", "1D", "m 3,9 h 4 m 0,-8 h -4 m 2,-1 v 10") + glyph("M", "11", "m 2,10 v -10 l 3,6 3,-6 v 10") + glyph("O", "0F", "m 1,9 l 8,-8 M 2,5 a 3,3 0 1 0 6,0 3,3 0 1 0 -6,0 z") + #glyph("R", "0F", "m 3,10 v -9 h 2 c 0,0 2.5,0 2.5,2.5 0,2.5 -2.5,2.5 -2.5,2.5 h -2 2.5 l 2.5,4.5") + glyph("S", "1E", "m 7.5,3 c 0,-1 -1,-2 -2.5,-2 -1.5,0 -2.5,1 -2.5,2 0,3 5,1 5,4 0,1 -1,2 -2.5,2 -1.5,0 -2.5,-1 -2.5,-2") + glyph("U", "1F", "m 2.5,0 v 6.5 c 0,1.5 1,2.5 2.5,2.5 1.5,0 2.5,-1 2.5,-2.5 v -6.5") + glyph("V", "16", "m 2,-1 3,11 3,-11") + + # In practice, your typical browser font will overshoot its em box, + # so to make the display more cohesive, we need to do the same. + # Sadly, sf->use_typo_metrics can't be unset from FontForge script-- + # this is necessary to prevent the caret from jumping upon the first + # inserted non-formatting character in xP's textarea. + # https://iamvdo.me/en/blog/css-font-metrics-line-height-and-vertical-align + print "SelectAll()\n" \ + "Scale(115, 115, 0, 0)\n" \ + "SetOS2Value('WinAscentIsOffset', 1)\n" \ + "SetOS2Value('WinDescentIsOffset', 1)\n" \ + "SetOS2Value('HHeadAscentIsOffset', 1)\n" \ + "SetOS2Value('HHeadDescentIsOffset', 1)\n" \ + "CorrectDirection()\n" \ + "AutoWidth(100)\n" \ + "AutoHint()\n" \ + "AddExtrema()\n" \ + "RoundToInt()\n" \ + "SetFontNames('IRCFormatting-Regular'," \ + " 'IRC Formatting', 'IRC Formatting Regular', 'Regular'," \ + " 'Copyright (c) 2022, Premysl Eric Janouch')\n" \ + "Generate('" Output "')\n" | FontForge + close(FontForge) +} |