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156
py/build_font.py
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156
py/build_font.py
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#!/usr/bin/env fontforge
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"""
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Build aifont.ttf:
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- Base: Meslo LGS NF Regular
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- Replace A-Z with arch-cut versions
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- Replace 0-9 with arch-cut versions
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- Replace a, i, o, s with custom ai-world designs
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- Keep everything else (other lowercase, symbols, nerd font icons)
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"""
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import fontforge
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import os
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BASE_FONT = "/tmp/MesloLGS NF Regular.ttf"
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UPPER_DIR = "/tmp/aifont_build/upper"
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DIGIT_DIR = "/tmp/aifont_build/digit"
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LOWER_DIR = "/tmp/aifont_build/lower"
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OUTPUT = "/tmp/aifont.ttf"
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font = fontforge.open(BASE_FONT)
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# Replace uppercase A-Z
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for c in range(ord('A'), ord('Z')+1):
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g = chr(c)
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svg = os.path.join(UPPER_DIR, g + ".svg")
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if os.path.exists(svg):
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glyph = font[c]
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w = glyph.width
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glyph.clear()
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glyph.importOutlines(svg)
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glyph.width = w
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glyph.correctDirection()
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print("Upper: " + g)
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# Replace digits 0-9
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for c in range(ord('0'), ord('9')+1):
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g = chr(c)
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svg = os.path.join(DIGIT_DIR, g + ".svg")
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if os.path.exists(svg):
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glyph = font[c]
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w = glyph.width
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glyph.clear()
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glyph.importOutlines(svg)
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glyph.width = w
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glyph.correctDirection()
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print("Digit: " + g)
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# Replace lowercase a, i, o, s
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# These have different coordinate systems, so center them after import
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import psMat
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for g in ['a', 'i']:
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c = ord(g)
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svg = os.path.join(LOWER_DIR, g + ".svg")
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if os.path.exists(svg):
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glyph = font[c]
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target_w = glyph.width
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glyph.clear()
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glyph.importOutlines(svg)
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glyph.correctDirection()
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# Get bounding box and center horizontally
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bb = glyph.boundingBox()
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xmin, ymin, xmax, ymax = bb
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glyph_w = xmax - xmin
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glyph_h = ymax - ymin
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# Scale per glyph
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if g == 'i':
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target_h = 1500
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elif g == 'a':
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target_h = 1400
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else:
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target_h = 1200
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if glyph_h > 0:
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scale = target_h / glyph_h
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glyph.transform(psMat.scale(scale))
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bb = glyph.boundingBox()
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xmin, ymin, xmax, ymax = bb
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glyph_w = xmax - xmin
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# Center horizontally within the glyph width
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x_offset = (target_w - glyph_w) / 2.0 - xmin
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# Align baseline
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y_offset = -ymin
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glyph.transform(psMat.translate(x_offset, y_offset))
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glyph.width = target_w
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# Thin down a, o, s (not i) - scale horizontally to 75%
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if g in ['a', 'o', 's']:
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bb = glyph.boundingBox()
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xmin, ymin, xmax, ymax = bb
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cx = (xmin + xmax) / 2.0
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# Scale X to 75%, keep Y
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glyph.transform(psMat.compose(
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psMat.translate(-cx, 0),
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psMat.compose(
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psMat.scale(0.75, 1.0),
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psMat.translate(cx, 0)
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)
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))
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# Re-center
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bb = glyph.boundingBox()
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xmin, ymin, xmax, ymax = bb
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glyph_w = xmax - xmin
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x_offset = (target_w - glyph_w) / 2.0 - xmin
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glyph.transform(psMat.translate(x_offset, 0))
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glyph.width = target_w
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print("Lower: " + g)
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# Re-import custom icons at E001-E003 (same approach as original aifont.py)
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# Build icon font separately, then merge
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ICON_DIR = "/tmp/aifont_build"
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scale = 200 # same as original
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icons_font = fontforge.font()
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icons_font.em = 1024
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for cp, name, has_yshift in [(0xE001, "ai.svg", False), (0xE002, "syui.svg", False), (0xE003, "bluesky.svg", True)]:
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svg = os.path.join(ICON_DIR, name)
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if os.path.exists(svg):
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glyph = icons_font.createChar(cp, name.replace(".svg", ""))
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glyph.importOutlines(svg)
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if has_yshift:
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bb = glyph.boundingBox()
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yshift = -bb[1]
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glyph.transform((1, 0, 0, 1, 0, yshift))
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s = scale / 100.0
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glyph.transform((s, 0, 0, s, 0, 0))
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glyph.width = 1024
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print("Icon: " + name)
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icons_font.generate("/tmp/aifont_icons.ttf")
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icons_font.close()
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# Clear existing icon slots and merge
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for cp in [0xE001, 0xE002, 0xE003]:
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font.selection.select(cp)
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font.clear()
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font.selection.none()
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font.mergeFonts("/tmp/aifont_icons.ttf")
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# Set font metadata
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font.fontname = "aifont"
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font.familyname = "aifont"
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font.fullname = "aifont"
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font.appendSFNTName("English (US)", "Family", "aifont")
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font.appendSFNTName("English (US)", "SubFamily", "Regular")
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font.appendSFNTName("English (US)", "UniqueID", "aifont-regular")
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font.appendSFNTName("English (US)", "Fullname", "aifont")
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font.appendSFNTName("English (US)", "PostScriptName", "aifont")
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font.appendSFNTName("English (US)", "Preferred Family", "aifont")
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font.appendSFNTName("English (US)", "Preferred Styles", "Regular")
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font.generate(OUTPUT)
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print("\nDone: " + OUTPUT)
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