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module Data.Text.ParagraphLayout.FontLoader
(loadPlexSansArabicRegular
,loadSaralaRegular
,loadUbuntuRegular
)
where
import Data.ByteString (readFile)
import Data.Text.Glyphize
(Font
,FontOptions(optionPPEm, optionScale)
,createFace
,createFontWithOptions
,defaultFontOptions
)
import Prelude (IO, Int, Maybe(Just), String, Word, return, ($))
import System.FilePath ((</>))
-- TODO: Figure out if this affects hinting!
testingPixelSize :: (Word, Word)
testingPixelSize = (24, 24)
-- This controls the output units.
-- The default is "unscaled", which uses the value of `faceUpem` in both axes.
testingScale :: (Int, Int)
testingScale = (1000, 1000)
loadPlexSansArabicRegular :: IO Font
loadPlexSansArabicRegular = loadFontFromFile $
"assets" </> "fonts" </> "plex" </> "IBMPlexSansArabic-Regular.ttf"
loadSaralaRegular :: IO Font
loadSaralaRegular = loadFontFromFile $
"assets" </> "fonts" </> "sarala" </> "Sarala-Regular.ttf"
loadUbuntuRegular :: IO Font
loadUbuntuRegular = loadFontFromFile $
"assets" </> "fonts" </> "ubuntu" </> "Ubuntu-R.ttf"
loadFontFromFile :: String -> IO Font
loadFontFromFile path = do
ttf <- readFile path
let face = createFace ttf 0
let font = createFontWithOptions (defaultFontOptions {
optionPPEm = Just testingPixelSize,
optionScale = Just testingScale
}) face
return font