pixie/tests/validate_fonts.nim
Ryan Oldenburg b0e7a1ae56 tests
2021-05-11 22:40:24 -05:00

43 lines
1.4 KiB
Nim

import pixie, stb_truetype, unicode
let fontFiles = [
# "tests/fonts/Roboto-Regular_1.ttf"
# "tests/fonts/Aclonica-Regular_1.ttf"
# "tests/fonts/Ubuntu-Regular_1.ttf"
# "tests/fonts/IBMPlexSans-Regular_2.ttf"
# "tests/fonts/NotoSans-Regular_4.ttf"
"tests/fonts/Pacifico-Regular_4.ttf"
]
for fontFile in fontFiles:
let stbtt = initFont(readFile(fontFile))
var font = readFont(fontFile)
var ascent, descent, lineGap: cint
stbtt.getFontVMetrics(ascent, descent, lineGap)
doAssert font.typeface.ascent == ascent.float32
doAssert font.typeface.descent == descent.float32
doAssert font.typeface.lineGap == lineGap.float32
for i in 32 .. 126:
var advanceWidth, leftSideBearing: cint
stbtt.getCodepointHMetrics(Rune(i), advanceWidth, leftSideBearing)
doAssert font.typeface.getAdvance(Rune(i)) == advanceWidth.float32
for i in 32 .. 126:
for j in 32 .. 126:
# echo i, ": ", $Rune(i), " ", j, ": ", $Rune(j)
let
a = stbtt.getCodepointKernAdvance(Rune(i), Rune(j)).float32
b = font.typeface.getKerningAdjustment(Rune(i), Rune(j))
if a != b:
# echo fontFile
echo i, ": ", $Rune(i), " ", j, ": ", $Rune(j)
echo "DISAGREE: ", a, " != ", b, " <<<<<<<<<<<<<<<<<<<<<<<<<<<"
# quit()
# echo stbtt.getCodepointKernAdvance(Rune('r'), Rune('s')).float32
# echo font.typeface.getKerningAdjustment(Rune('r'), Rune('s'))