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{- This Source Code Form is subject to the terms of the Mozilla Public License,
v. 2.0. If a copy of the MPL was not distributed with this file, You can
obtain one at https://mozilla.org/MPL/2.0/. -}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
module Graphics.Fountainhead.Metrics
( FontMetrics(..)
, afmFontMetrics
) where
import qualified Data.Text.Lazy.Builder as Text.Builder
import Data.Version (Version(..), showVersion)
import Graphics.Fountainhead.Type (newlineBuilder)
newtype FontMetrics = FontMetrics
{ version :: Version
} deriving (Eq, Show)
afmKeyString :: Text.Builder.Builder -> String -> Text.Builder.Builder
afmKeyString key value = key <> Text.Builder.singleton '\t'
<> Text.Builder.fromString value <> newlineBuilder
afmFontMetrics :: FontMetrics -> Text.Builder.Builder
afmFontMetrics FontMetrics{..}
= afmKeyString "StartFontMetrics" (showVersion version)
<> afmKeyString "Comment" "Generated by Fountainhead"
<> "EndFontMetrics" <> newlineBuilder
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