~alcinnz/fontconfig-pure

ref: 2fb2b76a7ec0f9f977c2a7c4db1c7117920d9cb4 fontconfig-pure/Graphics/Text/Font/Choose/FontSet/API.hs -rw-r--r-- 3.0 KiB
2fb2b76a — Adrian Cochrane Expose convenience APIs for coercing values & pattern properties to a type. 2 years ago 
                                                                                
9e1e5029 Adrian Cochrane 























































2 years ago























































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-- Here to break recursive imports...
module Graphics.Text.Font.Choose.FontSet.API where

import Graphics.Text.Font.Choose.FontSet
import Graphics.Text.Font.Choose.Pattern
import Graphics.Text.Font.Choose.Config
import Graphics.Text.Font.Choose.ObjectSet
import Graphics.Text.Font.Choose.CharSet
import Graphics.Text.Font.Choose.Result (throwPtr)

import Foreign.Ptr (Ptr, castPtr, nullPtr)
import Foreign.ForeignPtr (withForeignPtr)
import Foreign.Marshal.Alloc (alloca)
import System.IO.Unsafe (unsafePerformIO)

fontSetList :: Config -> [FontSet] -> Pattern -> ObjectSet -> FontSet
fontSetList config fontss pattern objs = unsafePerformIO $ withForeignPtr config $ \config' ->
    withFontSets fontss $ \fontss' n -> withPattern pattern $ \pattern' ->
        withObjectSet objs $ \objs' ->
            thawFontSet_ $ fcFontSetList config' fontss' n pattern' objs'
fontSetList' :: [FontSet] -> Pattern -> ObjectSet -> FontSet
fontSetList' fontss pattern objs = unsafePerformIO $ withFontSets fontss $ \fontss' n ->
    withPattern pattern $ \pattern' -> withObjectSet objs $ \objs' ->
        thawFontSet_ $ fcFontSetList nullPtr fontss' n pattern' objs'
foreign import ccall "FcFontSetList" fcFontSetList ::
    Config_ -> Ptr FontSet_ -> Int -> Pattern_ -> ObjectSet_ -> IO FontSet_

fontSetMatch :: Config -> [FontSet] -> Pattern -> Maybe Pattern
fontSetMatch config fontss pattern = unsafePerformIO $ withForeignPtr config $ \config' ->
    withFontSets fontss $ \fontss' n -> withPattern pattern $ \pattern' -> 
        alloca $ \res' -> do
            ret <- fcFontSetMatch config' fontss' n pattern' res'
            throwPtr res' $ thawPattern_ $ pure ret
fontSetMatch' :: [FontSet] -> Pattern -> Maybe Pattern
fontSetMatch' fontss pattern = unsafePerformIO $ withFontSets fontss $ \fontss' n ->
    withPattern pattern $ \pattern' -> alloca $ \res' -> do
        ret <- fcFontSetMatch nullPtr fontss' n pattern' res'
        throwPtr res' $ thawPattern_ $ pure ret
foreign import ccall "FcFontSetMatch" fcFontSetMatch ::
    Config_ -> Ptr FontSet_ -> Int -> Pattern_ -> Ptr Int -> IO Pattern_

fontSetSort :: Config -> [FontSet] -> Pattern -> Bool -> CharSet -> Maybe FontSet
fontSetSort config fontss pattern trim csp = unsafePerformIO $
    withForeignPtr config $ \config' -> withFontSets fontss $ \fontss' n ->
        withPattern pattern $ \pattern' -> withCharSet csp $ \csp' -> alloca $ \res' -> do
            ret' <- fcFontSetSort config' fontss' n pattern' trim csp' res'
            throwPtr res' $ thawFontSet_ $ pure ret'
fontSetSort' :: [FontSet] -> Pattern -> Bool -> CharSet -> Maybe FontSet
fontSetSort' fontss pattern trim csp = unsafePerformIO $
    withFontSets fontss $ \fontss' n -> withPattern pattern $ \pattern' ->
        withCharSet csp $ \csp' -> alloca $ \res' -> do
            ret' <- fcFontSetSort nullPtr fontss' n pattern' trim csp' res'
            throwPtr res' $ thawFontSet_ $ pure ret'
foreign import ccall "FcFontSetSort" fcFontSetSort :: Config_ -> Ptr FontSet_
    -> Int -> Pattern_ -> Bool -> CharSet_ -> Ptr Int -> IO FontSet_