diff --git a/FontyFruity.cabal b/FontyFruity.cabal --- a/FontyFruity.cabal +++ b/FontyFruity.cabal @@ -2,7 +2,7 @@ -- documentation, see http://haskell.org/cabal/users-guide/ name: FontyFruity -version: 0.5.3.3 +version: 0.5.3.4 synopsis: A true type file format loader description: A haskell Truetype file parser. @@ -28,7 +28,7 @@ Source-Repository this Type: git Location: https://github.com/Twinside/FontyFruity.git - Tag: v0.5.3.3 + Tag: v0.5.3.4 library exposed-modules: Graphics.Text.TrueType @@ -50,10 +50,10 @@ ghc-prof-options: -Wall hs-source-dirs: src default-language: Haskell2010 - build-depends: base >= 4.5 && < 5 + build-depends: base >= 4.5 && < 6 , binary >= 0.5 , bytestring >= 0.10 - , containers >= 0.5 && < 0.6 + , containers >= 0.5 , vector >= 0.9 , directory , text diff --git a/changelog b/changelog --- a/changelog +++ b/changelog @@ -1,5 +1,8 @@ -*-change-log-*- +v0.5.3.4 September 2018 + * Fix: GHC 8.6.1 compat + v0.5.3.3 June 2017 * Fix: Composite glyph positionning (patch from hsyl20) * Fix: glyph lookup (patch from hsyl20) diff --git a/src/Graphics/Text/TrueType/Bytecode.hs b/src/Graphics/Text/TrueType/Bytecode.hs --- a/src/Graphics/Text/TrueType/Bytecode.hs +++ b/src/Graphics/Text/TrueType/Bytecode.hs @@ -1,448 +1,448 @@ -{-# LANGUAGE CPP #-} -module Graphics.Text.TrueType.Bytecode where - -#if !MIN_VERSION_base(4,8,0) -import Control.Applicative( (<$>) ) -import Data.Monoid( mempty ) -#endif - -import Prelude hiding ( EQ, GT, LT ) -{-import Control.Monad.State.Strict( modify )-} -import Data.Bits( (.&.), testBit ) -import Data.Binary.Get( Get, getWord8, getWord16be ) -import Data.Int( Int32 ) -import qualified Data.Map as M -import Data.Word( Word8, Word16 ) -import qualified Data.Vector.Unboxed as VU - -import Graphics.Text.TrueType.Types - -type InstructionFlag = Bool - -data Instruction - -- | Pop one argument from the stack - = AA - | ABS - | ADD - | ALIGNPTS - | ALIGNRP - | AND - | CALL - | CEILING - | CINDEX - | CLEAR - | DEBUG - | DELTAC1 - | DELTAC2 - | DELTAC3 - | DELTAP1 - | DELTAP2 - | DELTAP3 - | DEPTH - | DIV - | DUP - | EIF - | ELSE - | ENDF - | EQ - | EVEN - | FDEF - | FLIPOFF - | FLIPON - | FLIPPT - | FLIPRGOFF - | FLIPRGON - | FLOOR - | GC PositionSource - | GETINFO - -- | Get Freedom vector - | GFV - | GPV - | GT - | GTEQ - | IDEF - | IF - | INSTCTRL - | IP - | ISECT - | IUP Direction - | JMPR - | JROF - | JROT - | LOOPCALL - | LT - | LTEQ - | MAX - | MD PositionSource - | MDAP Rounding - | MDRP PointReset DistanceKeeping Rounding Word8 - | MIAP Rounding - | MIN - | MINDEX - | MIRP PointReset DistanceKeeping Rounding Word8 - | MPPEM - | MPS - | MSIRP PointReset - | MUL - | NEG - | NEQ - | NOT - | NPUSHB (VU.Vector Word8) - | NPUSHW (VU.Vector Word16) - | NROUND Word8 - | ODD - | OR - | POP - | PUSHB (VU.Vector Word8) - | PUSHW (VU.Vector Word16) - | RCVT - | RDTG - | ROFF - | ROLL - | ROUND Word8 - | RS - | RTDG - | RTG - | RTHG - | RUTG - | S45ROUND - | SANGW - | SCANCTRL - | SCANTYPE - | SCFS - | SCVTCI - | SDB - | SDPVTL Parallelism - | SDS - | SFVFS - | SFVTCA Direction - | SFVTL Parallelism - | SFVTPV - | SHC CountourRef - | SHP CountourRef - | SHPIX - | SHZ CountourRef - | SLOOP - | SMD - | SPVFS - | SPVTCA Direction - | SPVTL Parallelism - | SROUND - | SRP0 - | SRP1 - | SRP2 - | SSW - | SSWCI - | SUB - | SVTCA Direction - | SWAP - | SZP0 - | SZP1 - | SZP2 - | SZPS - | UTP - | WCVTF - | WCVTP - | WS - deriving (Eq, Show) - -data CountourRef - = UseRP2InZP1 - | UseRP1InZP0 - deriving (Eq, Show) - -data Parallelism - = VectorParallel - | VectorPerpendicular - deriving (Eq, Show) - -data PositionSource - = PositionCurrent - | PositionOriginal - deriving (Eq, Show) - -data Direction - = DirectionX - | DirectionY - deriving (Eq, Show) - -data Rounding - = RoundingNone - | Rounding - deriving (Eq, Show) - -data PointReset - = ResetNot - | ResetRP0 - deriving (Eq, Show) - -data DistanceKeeping - = DistanceFree - | DistanceGreaterThanMin - deriving (Eq, Show) - -data ByteCodeProgram - = If [ByteCodeProgram] - | IfElse [ByteCodeProgram] [ByteCodeProgram] - | Function [ByteCodeProgram] - | Sequence [Instruction] - deriving (Eq, Show) - -instructionToProgram :: [Instruction]-> [ByteCodeProgram] -instructionToProgram = firstOfThird . go [] - where - firstOfThird (f, _, _) = f - - go acc [] = (reverse acc, [], []) - go acc (IF : rest) = - case go [] rest of - (ifBranch, [], final) -> go (If ifBranch : acc) final - (ifBranch, elseBranch, final) -> - go (IfElse ifBranch elseBranch : acc) final - go acc (EIF : rest) = (reverse acc, [], rest) - go acc (ELSE : rest) = (acc, elseBranch, final) - where (elseBranch, _, final) = go [] rest - go acc (FDEF : rest) = go (Function def: acc) final - where (def, _, final) = go [] rest - go acc (ENDF : rest) = (reverse acc, [], rest) - go acc (x : xs) = go (Sequence [x] : acc) xs - - -inRange :: Ord a => a -> (a, a) -> Bool -inRange v (lo, hi) = lo <= v && v <= hi - -getInstr :: Get Instruction -getInstr = getWord8 >>= go - where - mirpParse x constructor = constructor reset distance rounding distanceType - where - reset | x `testBit` 4 = ResetRP0 - | otherwise = ResetNot - - distance | x `testBit` 3 = DistanceGreaterThanMin - | otherwise = DistanceFree - - rounding | x `testBit` 2 = Rounding - | otherwise = RoundingNone - - distanceType = x .&. 0x3 - - go w = case w of - 0x7F -> return AA - 0x64 -> return ABS - 0x60 -> return ADD - 0x27 -> return ALIGNPTS - 0x3C -> return ALIGNRP - 0x5A -> return AND - 0x2B -> return CALL - 0x67 -> return CEILING - 0x25 -> return CINDEX - 0x22 -> return CLEAR - 0x4F -> return DEBUG - 0x73 -> return DELTAC1 - 0x74 -> return DELTAC2 - 0x75 -> return DELTAC3 - 0x5D -> return DELTAP1 - 0x71 -> return DELTAP2 - 0x72 -> return DELTAP3 - 0x24 -> return DEPTH - 0x62 -> return DIV - 0x20 -> return DUP - 0x59 -> return EIF - 0x1B -> return ELSE - 0x2D -> return ENDF - 0x54 -> return EQ - 0x57 -> return EVEN - 0x2C -> return FDEF - 0x4E -> return FLIPOFF - 0x4D -> return FLIPON - 0x80 -> return FLIPPT - 0x82 -> return FLIPRGOFF - 0x81 -> return FLIPRGON - 0x66 -> return FLOOR - 0x46 -> return $ GC PositionCurrent - 0x47 -> return $ GC PositionOriginal - 0x88 -> return GETINFO - 0x0D -> return GFV - 0x0C -> return GPV - 0x52 -> return GT - 0x53 -> return GTEQ - 0x89 -> return IDEF - 0x58 -> return IF - 0x8E -> return INSTCTRL - 0x39 -> return IP - 0x0F -> return ISECT - 0x30 -> return $ IUP DirectionY - 0x31 -> return $ IUP DirectionX - 0x1C -> return JMPR - 0x79 -> return JROF - 0x78 -> return JROT - 0x2A -> return LOOPCALL - 0x50 -> return LT - 0x51 -> return LTEQ - 0x8B -> return MAX - 0x49 -> return $ MD PositionCurrent - 0x4A -> return $ MD PositionOriginal - 0x2E -> return $ MDAP RoundingNone - 0x2F -> return $ MDAP Rounding - x | x `inRange` (0xC0, 0xDF) -> return $ mirpParse x MDRP - 0x3E -> return $ MIAP RoundingNone - 0x3F -> return $ MIAP Rounding - 0x8C -> return MIN - 0x26 -> return MINDEX - x | x `inRange` (0xE0, 0xFF) -> return $ mirpParse x MIRP - 0x4B -> return MPPEM - 0x4C -> return MPS - 0x3A -> return $ MSIRP ResetNot - 0x3B -> return $ MSIRP ResetRP0 - 0x63 -> return MUL - 0x65 -> return NEG - 0x55 -> return NEQ - 0x5C -> return NOT - 0x40 -> do - count <- fromIntegral <$> getWord8 - NPUSHB <$> VU.replicateM count getWord8 - - 0x41 -> do - count <- fromIntegral <$> getWord8 - NPUSHW <$> VU.replicateM count getWord16be - x | x `inRange` (0x6C, 0x6F) -> - return . NROUND $ x .&. 3 - 0x56 -> return ODD - 0x5B -> return OR - 0x21 -> return POP - x | x `inRange` (0xB0, 0xB7) -> do - let count = fromIntegral $ (x .&. 0x7) + 1 - PUSHB <$> VU.replicateM count getWord8 - x | x `inRange` (0xB8, 0xBF) -> do - let count = fromIntegral $ (x .&. 0x7) + 1 - PUSHW <$> VU.replicateM count getWord16be - 0x45 -> return RCVT - 0x7D -> return RDTG - 0x7A -> return ROFF - 0x8A -> return ROLL - x | x `inRange` (0x68, 0x6B) -> - return $ ROUND (x .&. 0x3) - 0x43 -> return RS - 0x3D -> return RTDG - 0x18 -> return RTG - 0x19 -> return RTHG - 0x7C -> return RUTG - 0x77 -> return S45ROUND - 0x7E -> return SANGW - 0x85 -> return SCANCTRL - 0x8D -> return SCANTYPE - 0x48 -> return SCFS - 0x1D -> return SCVTCI - 0x5E -> return SDB - 0x86 -> return $ SDPVTL VectorParallel - 0x87 -> return $ SDPVTL VectorPerpendicular - 0x5F -> return SDS - 0x0B -> return SFVFS - 0x04 -> return $ SFVTCA DirectionY - 0x05 -> return $ SFVTCA DirectionX - 0x08 -> return $ SFVTL VectorParallel - 0x09 -> return $ SFVTL VectorPerpendicular - 0x0E -> return SFVTPV - 0x34 -> return $ SHC UseRP2InZP1 - 0x35 -> return $ SHC UseRP1InZP0 - 0x32 -> return $ SHP UseRP2InZP1 - 0x33 -> return $ SHP UseRP1InZP0 - 0x38 -> return SHPIX - 0x36 -> return $ SHZ UseRP2InZP1 - 0x37 -> return $ SHZ UseRP1InZP0 - 0x17 -> return SLOOP - 0x1A -> return SMD - 0x0A -> return SPVFS - 0x02 -> return $ SPVTCA DirectionY - 0x03 -> return $ SPVTCA DirectionX - 0x06 -> return $ SPVTL VectorParallel - 0x07 -> return $ SPVTL VectorPerpendicular - 0x76 -> return SROUND - 0x10 -> return SRP0 - 0x11 -> return SRP1 - 0x12 -> return SRP2 - 0x1F -> return SSW - 0x1E -> return SSWCI - 0x61 -> return SUB - 0x00 -> return $ SVTCA DirectionY - 0x01 -> return $ SVTCA DirectionX - 0x23 -> return SWAP - 0x13 -> return SZP0 - 0x14 -> return SZP1 - 0x15 -> return SZP2 - 0x16 -> return SZPS - 0x29 -> return UTP - 0x70 -> return WCVTF - 0x44 -> return WCVTP - 0x42 -> return WS - _ -> fail "instruction reader coverage pleaser" - -type Point = (F26Dot6, F26Dot6) - -data GraphicalState = GraphicalState - { _stAutoFlip :: !Bool - , _stCutIn :: {-# UNPACK #-} !F26Dot6 - , _stDeltaBase :: {-# UNPACK #-} !Int32 - , _stDeltaShift :: {-# UNPACK #-} !Int32 - , _stDualProjection :: !(Maybe Point) - , _stFreedomVector :: !Point - , _stInstructionControl :: !Bool - , _stLoop :: {-# UNPACK #-} !Int32 - , _stMinDistance :: {-# UNPACK #-} !F26Dot6 - , _stProjectionVector :: !Point - , _stRoundState :: {-# UNPACK #-} !Int32 - , _stRp0 :: {-# UNPACK #-} !Int32 - , _stRp1 :: {-# UNPACK #-} !Int32 - , _stRp2 :: {-# UNPACK #-} !Int32 - , _stScanControl :: !Bool - , _stSingleWidthCutIn :: {-# UNPACK #-} !F26Dot6 - , _stSingleWidthValue :: {-# UNPACK #-} !F26Dot6 - , _stZp0 :: {-# UNPACK #-} !Int32 - , _stZp1 :: {-# UNPACK #-} !Int32 - , _stZp2 :: {-# UNPACK #-} !Int32 - , _stFunctions :: !(M.Map Int32 [ByteCodeProgram]) - } - deriving (Eq, Show) - -initialState :: GraphicalState -initialState = GraphicalState - { _stAutoFlip = True - , _stCutIn = 17 / 16 - , _stDeltaBase = 9 - , _stDeltaShift = 3 - , _stDualProjection = Nothing - , _stFreedomVector = (1, 0) - , _stInstructionControl = False - , _stLoop = 1 - , _stMinDistance = 1 - , _stProjectionVector = (1, 0) - , _stRoundState = 1 - , _stRp0 = 0 - , _stRp1 = 0 - , _stRp2 = 0 - , _stScanControl = False - , _stSingleWidthCutIn = 0 - , _stSingleWidthValue = 0 - , _stZp0 = 1 - , _stZp1 = 1 - , _stZp2 = 1 - , _stFunctions = mempty - } - -#if 0 - -evaluate :: [ByteCodeProgram] -> () -evaluate instrs = - where - byteExec [] stack = stack - byteExec (If _ : instr) (0:stack) = byteExec instr stack - byteExec (If thenBody : instr) (_:stack) = byteExec (thenBody ++ instr) stack - byteExec (IfElse _ elseBody) (0:stack) = byteExec (elseBody ++ instr) stack - byteExec (IfElse thenBody _) (_:stack) = byteExec (thenBody ++ instr) stack - byteExec (Function functionBody : instr) (id:stack) = - modify (\s -> s { _stFunctions = M.add id functionBody }) >> byteExec instr stack - byteExec (Sequence intructions : rest) stack = go instructions stack >>= byteExec rest - -#endif - +{-# LANGUAGE CPP #-} +module Graphics.Text.TrueType.Bytecode where + +#if !MIN_VERSION_base(4,8,0) +import Control.Applicative( (<$>) ) +import Data.Monoid( mempty ) +#endif + +import Prelude hiding ( EQ, GT, LT ) +{-import Control.Monad.State.Strict( modify )-} +import Data.Bits( (.&.), testBit ) +import Data.Binary.Get( Get, getWord8, getWord16be ) +import Data.Int( Int32 ) +import qualified Data.Map as M +import Data.Word( Word8, Word16 ) +import qualified Data.Vector.Unboxed as VU + +import Graphics.Text.TrueType.Types + +type InstructionFlag = Bool + +data Instruction + -- | Pop one argument from the stack + = AA + | ABS + | ADD + | ALIGNPTS + | ALIGNRP + | AND + | CALL + | CEILING + | CINDEX + | CLEAR + | DEBUG + | DELTAC1 + | DELTAC2 + | DELTAC3 + | DELTAP1 + | DELTAP2 + | DELTAP3 + | DEPTH + | DIV + | DUP + | EIF + | ELSE + | ENDF + | EQ + | EVEN + | FDEF + | FLIPOFF + | FLIPON + | FLIPPT + | FLIPRGOFF + | FLIPRGON + | FLOOR + | GC PositionSource + | GETINFO + -- | Get Freedom vector + | GFV + | GPV + | GT + | GTEQ + | IDEF + | IF + | INSTCTRL + | IP + | ISECT + | IUP Direction + | JMPR + | JROF + | JROT + | LOOPCALL + | LT + | LTEQ + | MAX + | MD PositionSource + | MDAP Rounding + | MDRP PointReset DistanceKeeping Rounding Word8 + | MIAP Rounding + | MIN + | MINDEX + | MIRP PointReset DistanceKeeping Rounding Word8 + | MPPEM + | MPS + | MSIRP PointReset + | MUL + | NEG + | NEQ + | NOT + | NPUSHB (VU.Vector Word8) + | NPUSHW (VU.Vector Word16) + | NROUND Word8 + | ODD + | OR + | POP + | PUSHB (VU.Vector Word8) + | PUSHW (VU.Vector Word16) + | RCVT + | RDTG + | ROFF + | ROLL + | ROUND Word8 + | RS + | RTDG + | RTG + | RTHG + | RUTG + | S45ROUND + | SANGW + | SCANCTRL + | SCANTYPE + | SCFS + | SCVTCI + | SDB + | SDPVTL Parallelism + | SDS + | SFVFS + | SFVTCA Direction + | SFVTL Parallelism + | SFVTPV + | SHC CountourRef + | SHP CountourRef + | SHPIX + | SHZ CountourRef + | SLOOP + | SMD + | SPVFS + | SPVTCA Direction + | SPVTL Parallelism + | SROUND + | SRP0 + | SRP1 + | SRP2 + | SSW + | SSWCI + | SUB + | SVTCA Direction + | SWAP + | SZP0 + | SZP1 + | SZP2 + | SZPS + | UTP + | WCVTF + | WCVTP + | WS + deriving (Eq, Show) + +data CountourRef + = UseRP2InZP1 + | UseRP1InZP0 + deriving (Eq, Show) + +data Parallelism + = VectorParallel + | VectorPerpendicular + deriving (Eq, Show) + +data PositionSource + = PositionCurrent + | PositionOriginal + deriving (Eq, Show) + +data Direction + = DirectionX + | DirectionY + deriving (Eq, Show) + +data Rounding + = RoundingNone + | Rounding + deriving (Eq, Show) + +data PointReset + = ResetNot + | ResetRP0 + deriving (Eq, Show) + +data DistanceKeeping + = DistanceFree + | DistanceGreaterThanMin + deriving (Eq, Show) + +data ByteCodeProgram + = If [ByteCodeProgram] + | IfElse [ByteCodeProgram] [ByteCodeProgram] + | Function [ByteCodeProgram] + | Sequence [Instruction] + deriving (Eq, Show) + +instructionToProgram :: [Instruction]-> [ByteCodeProgram] +instructionToProgram = firstOfThird . go [] + where + firstOfThird (f, _, _) = f + + go acc [] = (reverse acc, [], []) + go acc (IF : rest) = + case go [] rest of + (ifBranch, [], final) -> go (If ifBranch : acc) final + (ifBranch, elseBranch, final) -> + go (IfElse ifBranch elseBranch : acc) final + go acc (EIF : rest) = (reverse acc, [], rest) + go acc (ELSE : rest) = (acc, elseBranch, final) + where (elseBranch, _, final) = go [] rest + go acc (FDEF : rest) = go (Function def: acc) final + where (def, _, final) = go [] rest + go acc (ENDF : rest) = (reverse acc, [], rest) + go acc (x : xs) = go (Sequence [x] : acc) xs + + +inRange :: Ord a => a -> (a, a) -> Bool +inRange v (lo, hi) = lo <= v && v <= hi + +getInstr :: Get Instruction +getInstr = getWord8 >>= go + where + mirpParse x constructor = constructor reset distance rounding distanceType + where + reset | x `testBit` 4 = ResetRP0 + | otherwise = ResetNot + + distance | x `testBit` 3 = DistanceGreaterThanMin + | otherwise = DistanceFree + + rounding | x `testBit` 2 = Rounding + | otherwise = RoundingNone + + distanceType = x .&. 0x3 + + go w = case w of + 0x7F -> return AA + 0x64 -> return ABS + 0x60 -> return ADD + 0x27 -> return ALIGNPTS + 0x3C -> return ALIGNRP + 0x5A -> return AND + 0x2B -> return CALL + 0x67 -> return CEILING + 0x25 -> return CINDEX + 0x22 -> return CLEAR + 0x4F -> return DEBUG + 0x73 -> return DELTAC1 + 0x74 -> return DELTAC2 + 0x75 -> return DELTAC3 + 0x5D -> return DELTAP1 + 0x71 -> return DELTAP2 + 0x72 -> return DELTAP3 + 0x24 -> return DEPTH + 0x62 -> return DIV + 0x20 -> return DUP + 0x59 -> return EIF + 0x1B -> return ELSE + 0x2D -> return ENDF + 0x54 -> return EQ + 0x57 -> return EVEN + 0x2C -> return FDEF + 0x4E -> return FLIPOFF + 0x4D -> return FLIPON + 0x80 -> return FLIPPT + 0x82 -> return FLIPRGOFF + 0x81 -> return FLIPRGON + 0x66 -> return FLOOR + 0x46 -> return $ GC PositionCurrent + 0x47 -> return $ GC PositionOriginal + 0x88 -> return GETINFO + 0x0D -> return GFV + 0x0C -> return GPV + 0x52 -> return GT + 0x53 -> return GTEQ + 0x89 -> return IDEF + 0x58 -> return IF + 0x8E -> return INSTCTRL + 0x39 -> return IP + 0x0F -> return ISECT + 0x30 -> return $ IUP DirectionY + 0x31 -> return $ IUP DirectionX + 0x1C -> return JMPR + 0x79 -> return JROF + 0x78 -> return JROT + 0x2A -> return LOOPCALL + 0x50 -> return LT + 0x51 -> return LTEQ + 0x8B -> return MAX + 0x49 -> return $ MD PositionCurrent + 0x4A -> return $ MD PositionOriginal + 0x2E -> return $ MDAP RoundingNone + 0x2F -> return $ MDAP Rounding + x | x `inRange` (0xC0, 0xDF) -> return $ mirpParse x MDRP + 0x3E -> return $ MIAP RoundingNone + 0x3F -> return $ MIAP Rounding + 0x8C -> return MIN + 0x26 -> return MINDEX + x | x `inRange` (0xE0, 0xFF) -> return $ mirpParse x MIRP + 0x4B -> return MPPEM + 0x4C -> return MPS + 0x3A -> return $ MSIRP ResetNot + 0x3B -> return $ MSIRP ResetRP0 + 0x63 -> return MUL + 0x65 -> return NEG + 0x55 -> return NEQ + 0x5C -> return NOT + 0x40 -> do + count <- fromIntegral <$> getWord8 + NPUSHB <$> VU.replicateM count getWord8 + + 0x41 -> do + count <- fromIntegral <$> getWord8 + NPUSHW <$> VU.replicateM count getWord16be + x | x `inRange` (0x6C, 0x6F) -> + return . NROUND $ x .&. 3 + 0x56 -> return ODD + 0x5B -> return OR + 0x21 -> return POP + x | x `inRange` (0xB0, 0xB7) -> do + let count = fromIntegral $ (x .&. 0x7) + 1 + PUSHB <$> VU.replicateM count getWord8 + x | x `inRange` (0xB8, 0xBF) -> do + let count = fromIntegral $ (x .&. 0x7) + 1 + PUSHW <$> VU.replicateM count getWord16be + 0x45 -> return RCVT + 0x7D -> return RDTG + 0x7A -> return ROFF + 0x8A -> return ROLL + x | x `inRange` (0x68, 0x6B) -> + return $ ROUND (x .&. 0x3) + 0x43 -> return RS + 0x3D -> return RTDG + 0x18 -> return RTG + 0x19 -> return RTHG + 0x7C -> return RUTG + 0x77 -> return S45ROUND + 0x7E -> return SANGW + 0x85 -> return SCANCTRL + 0x8D -> return SCANTYPE + 0x48 -> return SCFS + 0x1D -> return SCVTCI + 0x5E -> return SDB + 0x86 -> return $ SDPVTL VectorParallel + 0x87 -> return $ SDPVTL VectorPerpendicular + 0x5F -> return SDS + 0x0B -> return SFVFS + 0x04 -> return $ SFVTCA DirectionY + 0x05 -> return $ SFVTCA DirectionX + 0x08 -> return $ SFVTL VectorParallel + 0x09 -> return $ SFVTL VectorPerpendicular + 0x0E -> return SFVTPV + 0x34 -> return $ SHC UseRP2InZP1 + 0x35 -> return $ SHC UseRP1InZP0 + 0x32 -> return $ SHP UseRP2InZP1 + 0x33 -> return $ SHP UseRP1InZP0 + 0x38 -> return SHPIX + 0x36 -> return $ SHZ UseRP2InZP1 + 0x37 -> return $ SHZ UseRP1InZP0 + 0x17 -> return SLOOP + 0x1A -> return SMD + 0x0A -> return SPVFS + 0x02 -> return $ SPVTCA DirectionY + 0x03 -> return $ SPVTCA DirectionX + 0x06 -> return $ SPVTL VectorParallel + 0x07 -> return $ SPVTL VectorPerpendicular + 0x76 -> return SROUND + 0x10 -> return SRP0 + 0x11 -> return SRP1 + 0x12 -> return SRP2 + 0x1F -> return SSW + 0x1E -> return SSWCI + 0x61 -> return SUB + 0x00 -> return $ SVTCA DirectionY + 0x01 -> return $ SVTCA DirectionX + 0x23 -> return SWAP + 0x13 -> return SZP0 + 0x14 -> return SZP1 + 0x15 -> return SZP2 + 0x16 -> return SZPS + 0x29 -> return UTP + 0x70 -> return WCVTF + 0x44 -> return WCVTP + 0x42 -> return WS + _ -> fail "instruction reader coverage pleaser" + +type Point = (F26Dot6, F26Dot6) + +data GraphicalState = GraphicalState + { _stAutoFlip :: !Bool + , _stCutIn :: {-# UNPACK #-} !F26Dot6 + , _stDeltaBase :: {-# UNPACK #-} !Int32 + , _stDeltaShift :: {-# UNPACK #-} !Int32 + , _stDualProjection :: !(Maybe Point) + , _stFreedomVector :: !Point + , _stInstructionControl :: !Bool + , _stLoop :: {-# UNPACK #-} !Int32 + , _stMinDistance :: {-# UNPACK #-} !F26Dot6 + , _stProjectionVector :: !Point + , _stRoundState :: {-# UNPACK #-} !Int32 + , _stRp0 :: {-# UNPACK #-} !Int32 + , _stRp1 :: {-# UNPACK #-} !Int32 + , _stRp2 :: {-# UNPACK #-} !Int32 + , _stScanControl :: !Bool + , _stSingleWidthCutIn :: {-# UNPACK #-} !F26Dot6 + , _stSingleWidthValue :: {-# UNPACK #-} !F26Dot6 + , _stZp0 :: {-# UNPACK #-} !Int32 + , _stZp1 :: {-# UNPACK #-} !Int32 + , _stZp2 :: {-# UNPACK #-} !Int32 + , _stFunctions :: !(M.Map Int32 [ByteCodeProgram]) + } + deriving (Eq, Show) + +initialState :: GraphicalState +initialState = GraphicalState + { _stAutoFlip = True + , _stCutIn = 17 / 16 + , _stDeltaBase = 9 + , _stDeltaShift = 3 + , _stDualProjection = Nothing + , _stFreedomVector = (1, 0) + , _stInstructionControl = False + , _stLoop = 1 + , _stMinDistance = 1 + , _stProjectionVector = (1, 0) + , _stRoundState = 1 + , _stRp0 = 0 + , _stRp1 = 0 + , _stRp2 = 0 + , _stScanControl = False + , _stSingleWidthCutIn = 0 + , _stSingleWidthValue = 0 + , _stZp0 = 1 + , _stZp1 = 1 + , _stZp2 = 1 + , _stFunctions = mempty + } + +#if 0 + +evaluate :: [ByteCodeProgram] -> () +evaluate instrs = + where + byteExec [] stack = stack + byteExec (If _ : instr) (0:stack) = byteExec instr stack + byteExec (If thenBody : instr) (_:stack) = byteExec (thenBody ++ instr) stack + byteExec (IfElse _ elseBody) (0:stack) = byteExec (elseBody ++ instr) stack + byteExec (IfElse thenBody _) (_:stack) = byteExec (thenBody ++ instr) stack + byteExec (Function functionBody : instr) (id:stack) = + modify (\s -> s { _stFunctions = M.add id functionBody }) >> byteExec instr stack + byteExec (Sequence intructions : rest) stack = go instructions stack >>= byteExec rest + +#endif + diff --git a/src/Graphics/Text/TrueType/CharacterMap.hs b/src/Graphics/Text/TrueType/CharacterMap.hs --- a/src/Graphics/Text/TrueType/CharacterMap.hs +++ b/src/Graphics/Text/TrueType/CharacterMap.hs @@ -1,385 +1,385 @@ -{-# LANGUAGE RankNTypes #-} -{-# LANGUAGE CPP #-} -module Graphics.Text.TrueType.CharacterMap - ( TtfEncoding( .. ) - , CharacterMaps - , LangId - , findCharGlyph - ) where - -#if !MIN_VERSION_base(4,8,0) -import Control.Applicative( (<*>), (<$>) ) -#endif - -import Control.DeepSeq( NFData( .. ) ) -import Control.Monad( replicateM, when, foldM ) -import Data.Binary( Binary( .. ) ) -import Data.Binary.Get( Get - , skip - , bytesRead - , getWord8 - , getWord16be - , getWord32be ) - -import Data.Binary.Put( putWord16be - , putWord32be ) -import Data.Int( Int16 ) -import Data.List( find, sort, sortBy ) -import qualified Data.Map.Strict as M -import Data.Maybe( fromMaybe ) -import Data.Word( Word8, Word16, Word32 ) -import Data.Ord( comparing ) - -import qualified Data.Vector as V -import qualified Data.Vector.Unboxed as VU - -import Graphics.Text.TrueType.LanguageIds - --------------------------------------------------- ----- TtfEncoding --------------------------------------------------- -data TtfEncoding - = EncodingSymbol - | EncodingUnicode - | EncodingShiftJIS - | EncodingBig5 - | EncodingPRC - | EncodingWansung - | EncodingJohab - deriving (Eq, Show) - -instance Binary TtfEncoding where - put EncodingSymbol = putWord16be 0 - put EncodingUnicode = putWord16be 1 - put EncodingShiftJIS = putWord16be 2 - put EncodingBig5 = putWord16be 3 - put EncodingPRC = putWord16be 4 - put EncodingWansung = putWord16be 5 - put EncodingJohab = putWord16be 6 - - get = do - v <- getWord16be - case v of - 0 -> return EncodingSymbol - 1 -> return EncodingUnicode - 2 -> return EncodingShiftJIS - 3 -> return EncodingBig5 - 4 -> return EncodingPRC - 5 -> return EncodingWansung - 6 -> return EncodingJohab - _ -> fail "Unknown encoding" - -class CharMappeable a where - -- | Given a group a character, return a valid glyph - -- id and the rest of the string. - glyphIdFromTable :: a -> Char -> Int - - -- | Given a table, retrieve the language code - langIdOfCharMap :: a -> LangId - -type LangId = Word16 - --------------------------------------------------- ----- CharacterMaps --------------------------------------------------- -data CharacterMap = CharacterMap - { _charMapPlatformId :: !PlatformId - , _charMapPlatformSpecific :: !Word16 - , _charMap :: !CharacterTable - } - deriving (Eq, Show) - -instance NFData CharacterMap where - rnf (CharacterMap {}) = () - -instance Ord CharacterMap where - compare = comparing _charMap - -newtype CharacterMaps = CharacterMaps [CharacterMap] - deriving (Eq, Show) - -instance NFData CharacterMaps where - rnf (CharacterMaps maps) = rnf maps `seq` () - -instance Binary CharacterMaps where - put _ = fail "Unimplemented" - get = do - startIndex <- bytesRead - versionNumber <- getWord16be - when (versionNumber /= 0) - (fail "Characte map - invalid version number") - tableCount <- fromIntegral <$> getWord16be - let descFetcher = (,,) <$> get <*> getWord16be <*> getWord32be - third (_, _, t) = t - tableDesc <- - sortBy (comparing third) <$> replicateM tableCount descFetcher - - - let fetcher (allMaps, lst) (platformId, platformSpecific, offset) - | M.member offset allMaps = case M.lookup offset allMaps of - Nothing -> fail "Impossible" - Just table -> - return (allMaps, CharacterMap platformId platformSpecific table : lst) - fetcher (allMaps, lst) (platformId, platformSpecific, offset) = do - currentOffset <- fromIntegral <$> bytesRead - let toSkip = fromIntegral offset - currentOffset + startIndex - when (toSkip > 0) - (skip $ fromIntegral toSkip) - mapData <- get - let charMap = CharacterMap platformId platformSpecific mapData - return (M.insert offset mapData allMaps, charMap : lst) - - (_, tables) <- foldM fetcher (M.empty, []) tableDesc - return . CharacterMaps $ sortBy (comparing _charMap) tables - -data CharMapOffset = CharMapOffset - { _cmoPlatformId :: !Word16 - , _cmoEncodingId :: !TtfEncoding - , _cmoOffset :: !Word32 - } - deriving (Eq, Show) - -instance Binary CharMapOffset where - get = CharMapOffset <$> getWord16be <*> get <*> getWord32be - put (CharMapOffset platform encoding offset) = - putWord16be platform >> put encoding >> putWord32be offset - --------------------------------------------------- ----- CharacterTable --------------------------------------------------- -data CharacterTable - = TableFormat0 !Format0 - | TableFormat2 !Format2 - | TableFormat4 !Format4 - | TableFormat6 !Format6 - | TableFormatUnknown !Word16 - deriving (Eq, Show) - -charTableMap :: (forall table . (CharMappeable table) => table -> a) - -> CharacterTable -> a -charTableMap f = go - where - go (TableFormat0 t) = f t - go (TableFormat2 t) = f t - go (TableFormat4 t) = f t - go (TableFormat6 t) = f t - go (TableFormatUnknown v) = f v - -findCharGlyph :: CharacterMaps -> LangId -> Char -> Int -findCharGlyph (CharacterMaps charMaps) langId character = - fromMaybe 0 . find (/= 0) . map snd . sort $ - [(_charMapPlatformId allMap, charTableMap (`glyphIdFromTable` character) m) - | allMap <- charMaps - , let m = _charMap allMap - , isLangCompatible m] - where - isLangCompatible v = tableLang == 0 || tableLang == langId - where tableLang = charTableMap langIdOfCharMap v - -instance Ord CharacterTable where - compare (TableFormat0 v1) (TableFormat0 v2) = - comparing langIdOfCharMap v1 v2 - compare (TableFormat2 v1) (TableFormat2 v2) = - comparing langIdOfCharMap v1 v2 - compare (TableFormat4 v1) (TableFormat4 v2) = - comparing langIdOfCharMap v1 v2 - compare (TableFormat6 v1) (TableFormat6 v2) = - comparing langIdOfCharMap v1 v2 - compare (TableFormat0 _) _ = LT - compare (TableFormat2 _) _ = LT - compare (TableFormat4 _) _ = LT - compare (TableFormat6 _) _ = LT - compare _ _ = GT - -instance Binary CharacterTable where - put _ = fail "Binary.put CharacterTable - Unimplemented" - get = do - format <- getWord16be - case format of - 0 -> TableFormat0 <$> get - 2 -> TableFormat2 <$> get - 4 -> TableFormat4 <$> get - 6 -> TableFormat6 <$> get - n -> return $ TableFormatUnknown n - -instance CharMappeable Word16 where - glyphIdFromTable _ _ = 0 - langIdOfCharMap _ = 0 - - --------------------------------------------------- ----- Format4 --------------------------------------------------- -data Format4 = Format4 - { _f4Language :: {-# UNPACK #-} !LangId - , _f4Map :: M.Map Word16 Word16 - } - deriving (Eq, Show) - -instance CharMappeable Format4 where - glyphIdFromTable tab v = - fromIntegral . M.findWithDefault 0 wc $ _f4Map tab - where wc = fromIntegral $ fromEnum v - langIdOfCharMap = _f4Language - -instance Binary Format4 where - put _ = error "put Format4 - unimplemented" - get = do - startIndex <- bytesRead - tableLength <- fromIntegral <$> getWord16be - language <- getWord16be - -- 2 * segCount - segCount <- (`div` 2) . fromIntegral <$> getWord16be - -- 2 * (2**FLOOR(log2(segCount))) - _searchRange <- getWord16be - -- log2(searchRange/2) - _entrySelector <- getWord16be - -- (2 * segCount) - searchRange - _rangeShift <- getWord16be - - let fetcher :: Get (VU.Vector Int) - fetcher = - VU.replicateM segCount (fromIntegral <$> getWord16be) - - endCodes <- fetcher - _reservedPad <- getWord16be - startCodes <- fetcher - idDelta <- - VU.replicateM segCount (fromIntegral <$> getWord16be) :: Get (VU.Vector Int16) - idRangeOffset <- fetcher - - tableBeginIndex <- bytesRead - let idDeltaInt = VU.map fromIntegral idDelta - rangeInfo = init . VU.toList $ - VU.zip5 startCodes endCodes idDeltaInt idRangeOffset $ - VU.enumFromN 0 segCount - - indexLeft = fromIntegral $ - (tableLength - (tableBeginIndex - startIndex + 2)) - `div` 2 - - indexTable <- VU.replicateM indexLeft getWord16be - - endIndex <- bytesRead - let toSkip = endIndex - startIndex - tableLength + 2 - if toSkip < 0 then - fail $ "Read to much Format4 table " ++ show toSkip - else - skip $ fromIntegral toSkip - - - return . Format4 language . M.fromList - $ concatMap (prepare segCount indexTable) rangeInfo - where - prepare _ _ (start, end, delta, 0, _) = - [(fromIntegral char, fromIntegral $ char + delta) - | char <- [start .. end]] - prepare segCount indexTable - (start, end, delta, rangeOffset, ix) = - -- this is... so convoluted oO - [( fromIntegral char - , fromIntegral (if glyphId == 0 then 0 else glyphId + fromIntegral delta)) - | char <- [start .. end] - , let index = - (rangeOffset `div` 2) + (char - start) + ix - - segCount - , index < VU.length indexTable - , let glyphId = indexTable VU.! index - ] - --------------------------------------------------- ----- Format0 --------------------------------------------------- -data Format0 = Format0 - { _format0Language :: {-# UNPACK #-} !LangId - , _format0Table :: !(VU.Vector Word8) - } - deriving (Eq, Show) - -instance CharMappeable Format0 where - glyphIdFromTable Format0 { _format0Table = table } v - | ic > VU.length table = 0 - | otherwise = fromIntegral $ table VU.! ic - where ic = fromEnum v - - langIdOfCharMap = _format0Language - -instance Binary Format0 where - put _ = fail "Binary.Format0.put - unimplemented" - get = do - tableSize <- getWord16be - when (tableSize /= 262) $ - fail ("table cmap format 0, invalid size: " - ++ show tableSize) - Format0 <$> getWord16be <*> VU.replicateM 256 getWord8 - --------------------------------------------------- ----- Format2 --------------------------------------------------- -data Format2 = Format2 - { _format2Language :: {-# UNPACK #-} !LangId - , _format2SubKeys :: !(VU.Vector Word16) - , _format2SubHeaders :: !(V.Vector Format2SubHeader) - } - deriving (Eq, Show) - -data Format2SubHeader = Format2SubHeader - { _f2SubCode :: {-# UNPACK #-} !Word16 - , _f2EntryCount :: {-# UNPACK #-} !Word16 - , _f2IdDelta :: {-# UNPACK #-} !Int16 - , _f2IdRangeOffset :: {-# UNPACK #-} !Word16 - } - deriving (Eq, Show) - -instance CharMappeable Format2 where - glyphIdFromTable _ _ = 0 - langIdOfCharMap = _format2Language - -instance Binary Format2SubHeader where - put (Format2SubHeader a b c d) = - p16 a >> p16 b >> pi16 c >> p16 d - where - p16 = putWord16be - pi16 = p16 . fromIntegral - - get = Format2SubHeader <$> g16 <*> g16 <*> (fromIntegral <$> g16) <*> g16 - where g16 = getWord16be - - -instance Binary Format2 where - put _ = fail "Format2.put - unimplemented" - get = do - _tableSize <- getWord16be - lang <- getWord16be - subKeys <- VU.map (`div` 8) <$> VU.replicateM 256 getWord16be - let maxSubIndex = VU.maximum subKeys - subHeaders <- V.replicateM (fromIntegral maxSubIndex) get - -- TODO finish the parsing of format 2 - return $ Format2 lang subKeys subHeaders - --------------------------------------------------- ----- Format6 --------------------------------------------------- -data Format6 = Format6 - { _format6Language :: {-# UNPACK #-} !LangId - , _format6FirstCode :: {-# UNPACK #-} !Word16 - , _format6ArrayIndex :: !(VU.Vector Word16) - } - deriving (Eq, Show) - -instance CharMappeable Format6 where - glyphIdFromTable Format6 { _format6ArrayIndex = table } v - | ic < VU.length table = fromIntegral $ table VU.! ic - | otherwise = 0 - where ic = fromEnum v - - langIdOfCharMap = _format6Language - -instance Binary Format6 where - put _ = fail "Format6.put - unimplemented" - get = do - _length <- getWord16be - language <- getWord16be - firstCode <- getWord16be - entryCount <- fromIntegral <$> getWord16be - Format6 language firstCode <$> VU.replicateM entryCount getWord16be +{-# LANGUAGE RankNTypes #-} +{-# LANGUAGE CPP #-} +module Graphics.Text.TrueType.CharacterMap + ( TtfEncoding( .. ) + , CharacterMaps + , LangId + , findCharGlyph + ) where + +#if !MIN_VERSION_base(4,8,0) +import Control.Applicative( (<*>), (<$>) ) +#endif + +import Control.DeepSeq( NFData( .. ) ) +import Control.Monad( replicateM, when, foldM ) +import Data.Binary( Binary( .. ) ) +import Data.Binary.Get( Get + , skip + , bytesRead + , getWord8 + , getWord16be + , getWord32be ) + +import Data.Binary.Put( putWord16be + , putWord32be ) +import Data.Int( Int16 ) +import Data.List( find, sort, sortBy ) +import qualified Data.Map.Strict as M +import Data.Maybe( fromMaybe ) +import Data.Word( Word8, Word16, Word32 ) +import Data.Ord( comparing ) + +import qualified Data.Vector as V +import qualified Data.Vector.Unboxed as VU + +import Graphics.Text.TrueType.LanguageIds + +-------------------------------------------------- +---- TtfEncoding +-------------------------------------------------- +data TtfEncoding + = EncodingSymbol + | EncodingUnicode + | EncodingShiftJIS + | EncodingBig5 + | EncodingPRC + | EncodingWansung + | EncodingJohab + deriving (Eq, Show) + +instance Binary TtfEncoding where + put EncodingSymbol = putWord16be 0 + put EncodingUnicode = putWord16be 1 + put EncodingShiftJIS = putWord16be 2 + put EncodingBig5 = putWord16be 3 + put EncodingPRC = putWord16be 4 + put EncodingWansung = putWord16be 5 + put EncodingJohab = putWord16be 6 + + get = do + v <- getWord16be + case v of + 0 -> return EncodingSymbol + 1 -> return EncodingUnicode + 2 -> return EncodingShiftJIS + 3 -> return EncodingBig5 + 4 -> return EncodingPRC + 5 -> return EncodingWansung + 6 -> return EncodingJohab + _ -> fail "Unknown encoding" + +class CharMappeable a where + -- | Given a group a character, return a valid glyph + -- id and the rest of the string. + glyphIdFromTable :: a -> Char -> Int + + -- | Given a table, retrieve the language code + langIdOfCharMap :: a -> LangId + +type LangId = Word16 + +-------------------------------------------------- +---- CharacterMaps +-------------------------------------------------- +data CharacterMap = CharacterMap + { _charMapPlatformId :: !PlatformId + , _charMapPlatformSpecific :: !Word16 + , _charMap :: !CharacterTable + } + deriving (Eq, Show) + +instance NFData CharacterMap where + rnf (CharacterMap {}) = () + +instance Ord CharacterMap where + compare = comparing _charMap + +newtype CharacterMaps = CharacterMaps [CharacterMap] + deriving (Eq, Show) + +instance NFData CharacterMaps where + rnf (CharacterMaps maps) = rnf maps `seq` () + +instance Binary CharacterMaps where + put _ = fail "Unimplemented" + get = do + startIndex <- bytesRead + versionNumber <- getWord16be + when (versionNumber /= 0) + (fail "Characte map - invalid version number") + tableCount <- fromIntegral <$> getWord16be + let descFetcher = (,,) <$> get <*> getWord16be <*> getWord32be + third (_, _, t) = t + tableDesc <- + sortBy (comparing third) <$> replicateM tableCount descFetcher + + + let fetcher (allMaps, lst) (platformId, platformSpecific, offset) + | M.member offset allMaps = case M.lookup offset allMaps of + Nothing -> fail "Impossible" + Just table -> + return (allMaps, CharacterMap platformId platformSpecific table : lst) + fetcher (allMaps, lst) (platformId, platformSpecific, offset) = do + currentOffset <- fromIntegral <$> bytesRead + let toSkip = fromIntegral offset - currentOffset + startIndex + when (toSkip > 0) + (skip $ fromIntegral toSkip) + mapData <- get + let charMap = CharacterMap platformId platformSpecific mapData + return (M.insert offset mapData allMaps, charMap : lst) + + (_, tables) <- foldM fetcher (M.empty, []) tableDesc + return . CharacterMaps $ sortBy (comparing _charMap) tables + +data CharMapOffset = CharMapOffset + { _cmoPlatformId :: !Word16 + , _cmoEncodingId :: !TtfEncoding + , _cmoOffset :: !Word32 + } + deriving (Eq, Show) + +instance Binary CharMapOffset where + get = CharMapOffset <$> getWord16be <*> get <*> getWord32be + put (CharMapOffset platform encoding offset) = + putWord16be platform >> put encoding >> putWord32be offset + +-------------------------------------------------- +---- CharacterTable +-------------------------------------------------- +data CharacterTable + = TableFormat0 !Format0 + | TableFormat2 !Format2 + | TableFormat4 !Format4 + | TableFormat6 !Format6 + | TableFormatUnknown !Word16 + deriving (Eq, Show) + +charTableMap :: (forall table . (CharMappeable table) => table -> a) + -> CharacterTable -> a +charTableMap f = go + where + go (TableFormat0 t) = f t + go (TableFormat2 t) = f t + go (TableFormat4 t) = f t + go (TableFormat6 t) = f t + go (TableFormatUnknown v) = f v + +findCharGlyph :: CharacterMaps -> LangId -> Char -> Int +findCharGlyph (CharacterMaps charMaps) langId character = + fromMaybe 0 . find (/= 0) . map snd . sort $ + [(_charMapPlatformId allMap, charTableMap (`glyphIdFromTable` character) m) + | allMap <- charMaps + , let m = _charMap allMap + , isLangCompatible m] + where + isLangCompatible v = tableLang == 0 || tableLang == langId + where tableLang = charTableMap langIdOfCharMap v + +instance Ord CharacterTable where + compare (TableFormat0 v1) (TableFormat0 v2) = + comparing langIdOfCharMap v1 v2 + compare (TableFormat2 v1) (TableFormat2 v2) = + comparing langIdOfCharMap v1 v2 + compare (TableFormat4 v1) (TableFormat4 v2) = + comparing langIdOfCharMap v1 v2 + compare (TableFormat6 v1) (TableFormat6 v2) = + comparing langIdOfCharMap v1 v2 + compare (TableFormat0 _) _ = LT + compare (TableFormat2 _) _ = LT + compare (TableFormat4 _) _ = LT + compare (TableFormat6 _) _ = LT + compare _ _ = GT + +instance Binary CharacterTable where + put _ = fail "Binary.put CharacterTable - Unimplemented" + get = do + format <- getWord16be + case format of + 0 -> TableFormat0 <$> get + 2 -> TableFormat2 <$> get + 4 -> TableFormat4 <$> get + 6 -> TableFormat6 <$> get + n -> return $ TableFormatUnknown n + +instance CharMappeable Word16 where + glyphIdFromTable _ _ = 0 + langIdOfCharMap _ = 0 + + +-------------------------------------------------- +---- Format4 +-------------------------------------------------- +data Format4 = Format4 + { _f4Language :: {-# UNPACK #-} !LangId + , _f4Map :: M.Map Word16 Word16 + } + deriving (Eq, Show) + +instance CharMappeable Format4 where + glyphIdFromTable tab v = + fromIntegral . M.findWithDefault 0 wc $ _f4Map tab + where wc = fromIntegral $ fromEnum v + langIdOfCharMap = _f4Language + +instance Binary Format4 where + put _ = error "put Format4 - unimplemented" + get = do + startIndex <- bytesRead + tableLength <- fromIntegral <$> getWord16be + language <- getWord16be + -- 2 * segCount + segCount <- (`div` 2) . fromIntegral <$> getWord16be + -- 2 * (2**FLOOR(log2(segCount))) + _searchRange <- getWord16be + -- log2(searchRange/2) + _entrySelector <- getWord16be + -- (2 * segCount) - searchRange + _rangeShift <- getWord16be + + let fetcher :: Get (VU.Vector Int) + fetcher = + VU.replicateM segCount (fromIntegral <$> getWord16be) + + endCodes <- fetcher + _reservedPad <- getWord16be + startCodes <- fetcher + idDelta <- + VU.replicateM segCount (fromIntegral <$> getWord16be) :: Get (VU.Vector Int16) + idRangeOffset <- fetcher + + tableBeginIndex <- bytesRead + let idDeltaInt = VU.map fromIntegral idDelta + rangeInfo = init . VU.toList $ + VU.zip5 startCodes endCodes idDeltaInt idRangeOffset $ + VU.enumFromN 0 segCount + + indexLeft = fromIntegral $ + (tableLength - (tableBeginIndex - startIndex + 2)) + `div` 2 + + indexTable <- VU.replicateM indexLeft getWord16be + + endIndex <- bytesRead + let toSkip = endIndex - startIndex - tableLength + 2 + if toSkip < 0 then + fail $ "Read to much Format4 table " ++ show toSkip + else + skip $ fromIntegral toSkip + + + return . Format4 language . M.fromList + $ concatMap (prepare segCount indexTable) rangeInfo + where + prepare _ _ (start, end, delta, 0, _) = + [(fromIntegral char, fromIntegral $ char + delta) + | char <- [start .. end]] + prepare segCount indexTable + (start, end, delta, rangeOffset, ix) = + -- this is... so convoluted oO + [( fromIntegral char + , fromIntegral (if glyphId == 0 then 0 else glyphId + fromIntegral delta)) + | char <- [start .. end] + , let index = + (rangeOffset `div` 2) + (char - start) + ix + - segCount + , index < VU.length indexTable + , let glyphId = indexTable VU.! index + ] + +-------------------------------------------------- +---- Format0 +-------------------------------------------------- +data Format0 = Format0 + { _format0Language :: {-# UNPACK #-} !LangId + , _format0Table :: !(VU.Vector Word8) + } + deriving (Eq, Show) + +instance CharMappeable Format0 where + glyphIdFromTable Format0 { _format0Table = table } v + | ic > VU.length table = 0 + | otherwise = fromIntegral $ table VU.! ic + where ic = fromEnum v + + langIdOfCharMap = _format0Language + +instance Binary Format0 where + put _ = fail "Binary.Format0.put - unimplemented" + get = do + tableSize <- getWord16be + when (tableSize /= 262) $ + fail ("table cmap format 0, invalid size: " + ++ show tableSize) + Format0 <$> getWord16be <*> VU.replicateM 256 getWord8 + +-------------------------------------------------- +---- Format2 +-------------------------------------------------- +data Format2 = Format2 + { _format2Language :: {-# UNPACK #-} !LangId + , _format2SubKeys :: !(VU.Vector Word16) + , _format2SubHeaders :: !(V.Vector Format2SubHeader) + } + deriving (Eq, Show) + +data Format2SubHeader = Format2SubHeader + { _f2SubCode :: {-# UNPACK #-} !Word16 + , _f2EntryCount :: {-# UNPACK #-} !Word16 + , _f2IdDelta :: {-# UNPACK #-} !Int16 + , _f2IdRangeOffset :: {-# UNPACK #-} !Word16 + } + deriving (Eq, Show) + +instance CharMappeable Format2 where + glyphIdFromTable _ _ = 0 + langIdOfCharMap = _format2Language + +instance Binary Format2SubHeader where + put (Format2SubHeader a b c d) = + p16 a >> p16 b >> pi16 c >> p16 d + where + p16 = putWord16be + pi16 = p16 . fromIntegral + + get = Format2SubHeader <$> g16 <*> g16 <*> (fromIntegral <$> g16) <*> g16 + where g16 = getWord16be + + +instance Binary Format2 where + put _ = fail "Format2.put - unimplemented" + get = do + _tableSize <- getWord16be + lang <- getWord16be + subKeys <- VU.map (`div` 8) <$> VU.replicateM 256 getWord16be + let maxSubIndex = VU.maximum subKeys + subHeaders <- V.replicateM (fromIntegral maxSubIndex) get + -- TODO finish the parsing of format 2 + return $ Format2 lang subKeys subHeaders + +-------------------------------------------------- +---- Format6 +-------------------------------------------------- +data Format6 = Format6 + { _format6Language :: {-# UNPACK #-} !LangId + , _format6FirstCode :: {-# UNPACK #-} !Word16 + , _format6ArrayIndex :: !(VU.Vector Word16) + } + deriving (Eq, Show) + +instance CharMappeable Format6 where + glyphIdFromTable Format6 { _format6ArrayIndex = table } v + | ic < VU.length table = fromIntegral $ table VU.! ic + | otherwise = 0 + where ic = fromEnum v + + langIdOfCharMap = _format6Language + +instance Binary Format6 where + put _ = fail "Format6.put - unimplemented" + get = do + _length <- getWord16be + language <- getWord16be + firstCode <- getWord16be + entryCount <- fromIntegral <$> getWord16be + Format6 language firstCode <$> VU.replicateM entryCount getWord16be diff --git a/src/Graphics/Text/TrueType/FontFolders.hs b/src/Graphics/Text/TrueType/FontFolders.hs --- a/src/Graphics/Text/TrueType/FontFolders.hs +++ b/src/Graphics/Text/TrueType/FontFolders.hs @@ -1,241 +1,241 @@ -{-# LANGUAGE OverloadedStrings #-} -{-# LANGUAGE CPP #-} -module Graphics.Text.TrueType.FontFolders - ( loadUnixFontFolderList - , loadWindowsFontFolderList - , fontFolders - , findFont - , descriptorOf - , FontCache( .. ) - , FontDescriptor( .. ) - , emptyFontCache - , buildFontCache - , enumerateFonts - ) where - -#if !MIN_VERSION_base(4,8,0) -import Control.Applicative( (<*>), (<$>) ) -#endif - -#if !MIN_VERSION_base(4,6,0) -import Control.Monad( guard ) -import Control.Exception( tryJust ) -import System.IO.Error( isDoesNotExistError ) -import System.Environment( getEnv ) -#else -import System.Environment( lookupEnv ) -#endif - -import Control.Monad( when, replicateM ) -import System.Directory( getDirectoryContents - , getHomeDirectory - , doesDirectoryExist - , doesFileExist - ) -import qualified Data.ByteString as B -import Data.Binary( Binary( .. ) ) -import Data.Binary.Get( Get - , getWord32be - , getByteString - ) -import Data.Binary.Put( Put - , putWord32be - , putByteString ) -import qualified Data.Map.Strict as M -import System.FilePath( () ) - -import Text.XML.Light( elChildren - , elName - , onlyElems - , parseXML - , qName - , strContent ) - -import qualified Control.Exception as E -import qualified Data.Text as T -import qualified Data.Text.IO as T (readFile) - -import Graphics.Text.TrueType.FontType -import Graphics.Text.TrueType.Header -import Graphics.Text.TrueType.Name - -import Control.DeepSeq (($!!)) - -catchAny :: IO a -> (E.SomeException -> IO a) -> IO a -catchAny = E.catch - -loadParseFontsConf :: IO [FilePath] -loadParseFontsConf = getPaths <$> T.readFile "/etc/fonts/fonts.conf" - where - getPaths s = map strContent - $ filter ((== "dir") . qName . elName) - $ concatMap elChildren - $ onlyElems - $ parseXML s - -#if !MIN_VERSION_base(4,6,0) -lookupEnv :: String -> IO (Maybe String) -lookupEnv varName = do - v <- tryJust (guard . isDoesNotExistError) $ getEnv varName - case v of - Left _ -> return Nothing - Right val -> return $ Just val -#endif - -loadUnixFontFolderList :: IO [FilePath] -loadUnixFontFolderList = catchAny - (do conf <- loadParseFontsConf - return $!! conf ++ map ( "truetype") conf) - (const $ return defaults) - where - defaults = ["/usr/share/fonts", "/usr/local/share/fonts", "~/.fonts"] - -loadWindowsFontFolderList :: IO [FilePath] -loadWindowsFontFolderList = toFontFolder <$> lookupEnv "Windir" - where toFontFolder (Just a) = [a "Fonts"] - toFontFolder Nothing = [] - -loadOsXFontFolderList :: IO [FilePath] -loadOsXFontFolderList = do - home <- getHomeDirectory - return [home "Library" "Fonts" - ,"/" "Library" "Fonts" - ,"/" "System" "Library" "Fonts" - ,"/" "System Folder" "Fonts" - ] - - -fontFolders :: IO [FilePath] -fontFolders = do - unix <- loadUnixFontFolderList - win <- loadWindowsFontFolderList - osx <- loadOsXFontFolderList - return $ unix ++ win ++ osx - --- | A font descriptor is a key used to find a font --- in a font cache. -data FontDescriptor = FontDescriptor - { -- | The family name of the font - _descriptorFamilyName :: !T.Text - -- | The desired style - , _descriptorStyle :: !FontStyle - } - deriving (Eq, Ord, Show) - -instance Binary FontDescriptor where - put (FontDescriptor t s) = put (T.unpack t) >> put s - get = FontDescriptor <$> (T.pack <$> get) <*> get - --- | A font cache is a cache listing all the found --- fonts on the system, allowing faster font lookup --- once created --- --- FontCache is an instance of binary, to get okish --- performance you should save it in a file somewhere --- instead of rebuilding it everytime! --- --- The font cache is dependent on the version --- of rasterific, you must rebuild it for every --- version. -newtype FontCache = - FontCache (M.Map FontDescriptor FilePath) - deriving Show - --- | Font cache with no pre-existing fonts in it. -emptyFontCache :: FontCache -emptyFontCache = FontCache M.empty - -signature :: B.ByteString -signature = "FontyFruity__FONTCACHE:0.5" - -putFontCache :: FontCache -> Put -putFontCache (FontCache cache) = do - putByteString signature - putWord32be . fromIntegral $ M.size cache - mapM_ put $ M.toList cache - -getFontCache :: Get FontCache -getFontCache = do - str <- getByteString $ B.length signature - when (str /= signature) $ - fail "Invalid font cache" - count <- fromIntegral <$> getWord32be - FontCache . M.fromList <$> replicateM count get - -instance Binary FontCache where - put = putFontCache - get = getFontCache - --- | Returns a list of descriptors of fonts stored in the given cache. -enumerateFonts :: FontCache -> [FontDescriptor] -enumerateFonts (FontCache fs) = M.keys fs - - --- | If possible, returns a descriptor of the Font. -descriptorOf :: Font -> Maybe FontDescriptor -descriptorOf font = do - hdr <- _fontHeader font - names <- _fontNames font - return $ FontDescriptor (fontFamilyName names) (_fHdrMacStyle hdr) - - --- | Look in the system's folder for usable fonts. -buildFontCache :: (FilePath -> IO (Maybe Font)) -> IO FontCache -buildFontCache loader = do - folders <- fontFolders - found <- build [("", v) | v <- folders] - return . FontCache - $ M.fromList [(d, path) | (Just d, path) <- found - , _descriptorFamilyName d /= ""] - where - build [] = return [] - build ((".", _):rest) = build rest - build (("..", _):rest) = build rest - build ((_, n):rest) = do - isDirectory <- doesDirectoryExist n - - if isDirectory then do - sub <- getDirectoryContents n - (++) <$> build [(s, n s) | s <- sub] - <*> build rest - else do - isFile <- doesFileExist n - if isFile then do - f <- loader n - case f of - Nothing -> build rest - Just fo -> ((descriptorOf fo, n) :) <$> build rest - else build rest - -findFont :: (FilePath -> IO (Maybe Font)) -> String -> FontStyle - -> IO (Maybe FilePath) -findFont loader fontName fontStyle = do - folders <- fontFolders - searchIn [("", v) | v <- folders] - where - fontNameText = T.pack fontName - isMatching n (Font { _fontHeader = Just hdr - , _fontNames = Just names}) - | _fHdrMacStyle hdr == fontStyle && - fontFamilyName names == fontNameText = Just n - isMatching _ _ = Nothing - - searchIn [] = return Nothing - searchIn ((".", _):rest) = searchIn rest - searchIn (("..", _):rest) = searchIn rest - searchIn ((_, n):rest) = do - isDirectory <- doesDirectoryExist n - - let findOrRest Nothing = searchIn rest - findOrRest l = return l - - if isDirectory then do - sub <- getDirectoryContents n - subRez <- searchIn [(s, n s) | s <- sub] - findOrRest subRez - else do - isFile <- doesFileExist n - if isFile then do - font <- loader n - findOrRest $ font >>= isMatching n - else searchIn rest +{-# LANGUAGE OverloadedStrings #-} +{-# LANGUAGE CPP #-} +module Graphics.Text.TrueType.FontFolders + ( loadUnixFontFolderList + , loadWindowsFontFolderList + , fontFolders + , findFont + , descriptorOf + , FontCache( .. ) + , FontDescriptor( .. ) + , emptyFontCache + , buildFontCache + , enumerateFonts + ) where + +#if !MIN_VERSION_base(4,8,0) +import Control.Applicative( (<*>), (<$>) ) +#endif + +#if !MIN_VERSION_base(4,6,0) +import Control.Monad( guard ) +import Control.Exception( tryJust ) +import System.IO.Error( isDoesNotExistError ) +import System.Environment( getEnv ) +#else +import System.Environment( lookupEnv ) +#endif + +import Control.Monad( when, replicateM ) +import System.Directory( getDirectoryContents + , getHomeDirectory + , doesDirectoryExist + , doesFileExist + ) +import qualified Data.ByteString as B +import Data.Binary( Binary( .. ) ) +import Data.Binary.Get( Get + , getWord32be + , getByteString + ) +import Data.Binary.Put( Put + , putWord32be + , putByteString ) +import qualified Data.Map.Strict as M +import System.FilePath( () ) + +import Text.XML.Light( elChildren + , elName + , onlyElems + , parseXML + , qName + , strContent ) + +import qualified Control.Exception as E +import qualified Data.Text as T +import qualified Data.Text.IO as T (readFile) + +import Graphics.Text.TrueType.FontType +import Graphics.Text.TrueType.Header +import Graphics.Text.TrueType.Name + +import Control.DeepSeq (($!!)) + +catchAny :: IO a -> (E.SomeException -> IO a) -> IO a +catchAny = E.catch + +loadParseFontsConf :: IO [FilePath] +loadParseFontsConf = getPaths <$> T.readFile "/etc/fonts/fonts.conf" + where + getPaths s = map strContent + $ filter ((== "dir") . qName . elName) + $ concatMap elChildren + $ onlyElems + $ parseXML s + +#if !MIN_VERSION_base(4,6,0) +lookupEnv :: String -> IO (Maybe String) +lookupEnv varName = do + v <- tryJust (guard . isDoesNotExistError) $ getEnv varName + case v of + Left _ -> return Nothing + Right val -> return $ Just val +#endif + +loadUnixFontFolderList :: IO [FilePath] +loadUnixFontFolderList = catchAny + (do conf <- loadParseFontsConf + return $!! conf ++ map ( "truetype") conf) + (const $ return defaults) + where + defaults = ["/usr/share/fonts", "/usr/local/share/fonts", "~/.fonts"] + +loadWindowsFontFolderList :: IO [FilePath] +loadWindowsFontFolderList = toFontFolder <$> lookupEnv "Windir" + where toFontFolder (Just a) = [a "Fonts"] + toFontFolder Nothing = [] + +loadOsXFontFolderList :: IO [FilePath] +loadOsXFontFolderList = do + home <- getHomeDirectory + return [home "Library" "Fonts" + ,"/" "Library" "Fonts" + ,"/" "System" "Library" "Fonts" + ,"/" "System Folder" "Fonts" + ] + + +fontFolders :: IO [FilePath] +fontFolders = do + unix <- loadUnixFontFolderList + win <- loadWindowsFontFolderList + osx <- loadOsXFontFolderList + return $ unix ++ win ++ osx + +-- | A font descriptor is a key used to find a font +-- in a font cache. +data FontDescriptor = FontDescriptor + { -- | The family name of the font + _descriptorFamilyName :: !T.Text + -- | The desired style + , _descriptorStyle :: !FontStyle + } + deriving (Eq, Ord, Show) + +instance Binary FontDescriptor where + put (FontDescriptor t s) = put (T.unpack t) >> put s + get = FontDescriptor <$> (T.pack <$> get) <*> get + +-- | A font cache is a cache listing all the found +-- fonts on the system, allowing faster font lookup +-- once created +-- +-- FontCache is an instance of binary, to get okish +-- performance you should save it in a file somewhere +-- instead of rebuilding it everytime! +-- +-- The font cache is dependent on the version +-- of rasterific, you must rebuild it for every +-- version. +newtype FontCache = + FontCache (M.Map FontDescriptor FilePath) + deriving Show + +-- | Font cache with no pre-existing fonts in it. +emptyFontCache :: FontCache +emptyFontCache = FontCache M.empty + +signature :: B.ByteString +signature = "FontyFruity__FONTCACHE:0.5" + +putFontCache :: FontCache -> Put +putFontCache (FontCache cache) = do + putByteString signature + putWord32be . fromIntegral $ M.size cache + mapM_ put $ M.toList cache + +getFontCache :: Get FontCache +getFontCache = do + str <- getByteString $ B.length signature + when (str /= signature) $ + fail "Invalid font cache" + count <- fromIntegral <$> getWord32be + FontCache . M.fromList <$> replicateM count get + +instance Binary FontCache where + put = putFontCache + get = getFontCache + +-- | Returns a list of descriptors of fonts stored in the given cache. +enumerateFonts :: FontCache -> [FontDescriptor] +enumerateFonts (FontCache fs) = M.keys fs + + +-- | If possible, returns a descriptor of the Font. +descriptorOf :: Font -> Maybe FontDescriptor +descriptorOf font = do + hdr <- _fontHeader font + names <- _fontNames font + return $ FontDescriptor (fontFamilyName names) (_fHdrMacStyle hdr) + + +-- | Look in the system's folder for usable fonts. +buildFontCache :: (FilePath -> IO (Maybe Font)) -> IO FontCache +buildFontCache loader = do + folders <- fontFolders + found <- build [("", v) | v <- folders] + return . FontCache + $ M.fromList [(d, path) | (Just d, path) <- found + , _descriptorFamilyName d /= ""] + where + build [] = return [] + build ((".", _):rest) = build rest + build (("..", _):rest) = build rest + build ((_, n):rest) = do + isDirectory <- doesDirectoryExist n + + if isDirectory then do + sub <- getDirectoryContents n + (++) <$> build [(s, n s) | s <- sub] + <*> build rest + else do + isFile <- doesFileExist n + if isFile then do + f <- loader n + case f of + Nothing -> build rest + Just fo -> ((descriptorOf fo, n) :) <$> build rest + else build rest + +findFont :: (FilePath -> IO (Maybe Font)) -> String -> FontStyle + -> IO (Maybe FilePath) +findFont loader fontName fontStyle = do + folders <- fontFolders + searchIn [("", v) | v <- folders] + where + fontNameText = T.pack fontName + isMatching n (Font { _fontHeader = Just hdr + , _fontNames = Just names}) + | _fHdrMacStyle hdr == fontStyle && + fontFamilyName names == fontNameText = Just n + isMatching _ _ = Nothing + + searchIn [] = return Nothing + searchIn ((".", _):rest) = searchIn rest + searchIn (("..", _):rest) = searchIn rest + searchIn ((_, n):rest) = do + isDirectory <- doesDirectoryExist n + + let findOrRest Nothing = searchIn rest + findOrRest l = return l + + if isDirectory then do + sub <- getDirectoryContents n + subRez <- searchIn [(s, n s) | s <- sub] + findOrRest subRez + else do + isFile <- doesFileExist n + if isFile then do + font <- loader n + findOrRest $ font >>= isMatching n + else searchIn rest diff --git a/src/Graphics/Text/TrueType/Header.hs b/src/Graphics/Text/TrueType/Header.hs --- a/src/Graphics/Text/TrueType/Header.hs +++ b/src/Graphics/Text/TrueType/Header.hs @@ -1,143 +1,143 @@ -{-# LANGUAGE CPP #-} -module Graphics.Text.TrueType.Header - ( FontHeader( .. ) - , FontStyle( .. ) - , HeaderFlags( .. ) - ) where - -#if !MIN_VERSION_base(4,8,0) -import Control.Applicative( (<*>), (<$>) ) -#endif - -import Control.DeepSeq( NFData( .. ) ) -import Data.Bits( (.|.), setBit, testBit ) -import Data.Binary( Binary( .. ) ) -import Data.Binary.Get( getWord16be - , getWord32be - , getWord64be - ) - -import Data.Binary.Put( putWord16be) - -import Data.Int( Int16 ) -import Data.List( foldl' ) -import Data.Word( Word16, Word32, Word64 ) - -import Graphics.Text.TrueType.Types - --- | Describe the basic stylistic properties --- of a font. -data FontStyle = FontStyle - { _fontStyleBold :: !Bool -- ^ If the font is bold. - , _fontStyleItalic :: !Bool -- ^ If the font is italic. - } - deriving (Eq, Ord, Show) - -instance Binary FontStyle where - put style = putWord16be $ italicByte .|. boldByte - where - boldByte - | _fontStyleBold style = 1 - | otherwise = 0 - - italicByte - | _fontStyleItalic style = 2 - | otherwise = 0 - - get = do - styleWord <- getWord16be - let bitAt = testBit styleWord - return $ FontStyle (bitAt 0) (bitAt 1) - --- | Font header -data FontHeader = FontHeader - { -- | Table version number 0x00010000 for version 1.0. - _fHdrVersionNumber :: !Fixed - -- | fontRevision Set by font manufacturer. - , _fHdrFontRevision :: !Fixed - -- | To compute: set it to 0, sum the entire font as - -- ULONG, then store 0xB1B0AFBA - sum. - , _fHdrChecksumAdjust :: !Word32 - - -- | Should be equal to 0x5F0F3CF5. - , _fHdrMagicNumber :: !Word32 - , _fHdrFlags :: !HeaderFlags - - -- | Valid range is from 16 to 16384 - , _fUnitsPerEm :: !Word16 - -- | International date (8-byte field). - , _fHdrCreateTime :: !Word64 - -- | International date (8-byte field). - , _fHdrModificationTime :: !Word64 - - -- | For all glyph bounding boxes. - , _fHdrxMin :: !FWord - -- | For all glyph bounding boxes. - , _fHdrYMin :: !FWord - -- | For all glyph bounding boxes. - , _fHdrXMax :: !FWord - -- | For all glyph bounding boxes. - , _fHdrYMax :: !FWord - -- | Bit 0 bold (if set to 1); Bit 1 italic (if set to 1) - , _fHdrMacStyle :: !FontStyle - -- | Smallest readable size in pixels. - , _fHdrLowestRecPPEM :: !Word16 - - -- | 0 Fully mixed directional glyphs; - -- 1 Only strongly left to right; - -- 2 Like 1 but also contains neutrals ; - -- -1 Only strongly right to left; - -- -2 Like -1 but also contains neutrals. - , _fHdrFontDirectionHint :: !Int16 - -- | 0 for short offsets, 1 for long. - , _fHdrIndexToLocFormat :: !Int16 - -- | 0 for current format. - , _fHdrGlyphDataFormat :: !Int16 - } - deriving (Eq, Show) - -instance NFData FontHeader where - rnf (FontHeader {}) = () - -instance Binary FontHeader where - put _ = fail "Unimplemented" - get = - FontHeader <$> get <*> get <*> g32 <*> g32 <*> get - <*> g16 <*> g64 <*> g64 <*> get <*> get - <*> get <*> get <*> get <*> g16 <*> gi16 - <*> gi16 <*> gi16 - where g16 = getWord16be - g32 = getWord32be - gi16 = fromIntegral <$> getWord16be - g64 = getWord64be - - --- | Header flags. -data HeaderFlags = HeaderFlags - { -- | Bit 0 - baseline for font at y=0; - _hfBaselineY0 :: !Bool - -- | Bit 1 - left sidebearing at x=0; - , _hfLeftSideBearing :: !Bool - -- | Bit 2 - instructions may depend on point size; - , _hfInstrDependPointSize :: !Bool - -- | Bit 3 - force ppem to integer values for all internal - -- scaler math; may use fractional ppem sizes if this bit - -- is clear; - , _hfForcePPEM :: !Bool - -- | Bit 4 - instructions may alter advance width (the - -- advance widths might not scale linearly); - , _hfAlterAdvance :: !Bool - } - deriving (Eq, Show) - -instance Binary HeaderFlags where - get = do - flags <- getWord16be - let at ix = flags `testBit` ix - return $ HeaderFlags (at 0) (at 1) (at 2) (at 3) (at 4) - - put (HeaderFlags a0 a1 a2 a3 a4) = - putWord16be . foldl' setter 0 $ zip [0..] [a0, a1, a2, a3, a4] - where setter acc (_, False) = acc - setter acc (ix, True) = setBit acc ix - +{-# LANGUAGE CPP #-} +module Graphics.Text.TrueType.Header + ( FontHeader( .. ) + , FontStyle( .. ) + , HeaderFlags( .. ) + ) where + +#if !MIN_VERSION_base(4,8,0) +import Control.Applicative( (<*>), (<$>) ) +#endif + +import Control.DeepSeq( NFData( .. ) ) +import Data.Bits( (.|.), setBit, testBit ) +import Data.Binary( Binary( .. ) ) +import Data.Binary.Get( getWord16be + , getWord32be + , getWord64be + ) + +import Data.Binary.Put( putWord16be) + +import Data.Int( Int16 ) +import Data.List( foldl' ) +import Data.Word( Word16, Word32, Word64 ) + +import Graphics.Text.TrueType.Types + +-- | Describe the basic stylistic properties +-- of a font. +data FontStyle = FontStyle + { _fontStyleBold :: !Bool -- ^ If the font is bold. + , _fontStyleItalic :: !Bool -- ^ If the font is italic. + } + deriving (Eq, Ord, Show) + +instance Binary FontStyle where + put style = putWord16be $ italicByte .|. boldByte + where + boldByte + | _fontStyleBold style = 1 + | otherwise = 0 + + italicByte + | _fontStyleItalic style = 2 + | otherwise = 0 + + get = do + styleWord <- getWord16be + let bitAt = testBit styleWord + return $ FontStyle (bitAt 0) (bitAt 1) + +-- | Font header +data FontHeader = FontHeader + { -- | Table version number 0x00010000 for version 1.0. + _fHdrVersionNumber :: !Fixed + -- | fontRevision Set by font manufacturer. + , _fHdrFontRevision :: !Fixed + -- | To compute: set it to 0, sum the entire font as + -- ULONG, then store 0xB1B0AFBA - sum. + , _fHdrChecksumAdjust :: !Word32 + + -- | Should be equal to 0x5F0F3CF5. + , _fHdrMagicNumber :: !Word32 + , _fHdrFlags :: !HeaderFlags + + -- | Valid range is from 16 to 16384 + , _fUnitsPerEm :: !Word16 + -- | International date (8-byte field). + , _fHdrCreateTime :: !Word64 + -- | International date (8-byte field). + , _fHdrModificationTime :: !Word64 + + -- | For all glyph bounding boxes. + , _fHdrxMin :: !FWord + -- | For all glyph bounding boxes. + , _fHdrYMin :: !FWord + -- | For all glyph bounding boxes. + , _fHdrXMax :: !FWord + -- | For all glyph bounding boxes. + , _fHdrYMax :: !FWord + -- | Bit 0 bold (if set to 1); Bit 1 italic (if set to 1) + , _fHdrMacStyle :: !FontStyle + -- | Smallest readable size in pixels. + , _fHdrLowestRecPPEM :: !Word16 + + -- | 0 Fully mixed directional glyphs; + -- 1 Only strongly left to right; + -- 2 Like 1 but also contains neutrals ; + -- -1 Only strongly right to left; + -- -2 Like -1 but also contains neutrals. + , _fHdrFontDirectionHint :: !Int16 + -- | 0 for short offsets, 1 for long. + , _fHdrIndexToLocFormat :: !Int16 + -- | 0 for current format. + , _fHdrGlyphDataFormat :: !Int16 + } + deriving (Eq, Show) + +instance NFData FontHeader where + rnf (FontHeader {}) = () + +instance Binary FontHeader where + put _ = fail "Unimplemented" + get = + FontHeader <$> get <*> get <*> g32 <*> g32 <*> get + <*> g16 <*> g64 <*> g64 <*> get <*> get + <*> get <*> get <*> get <*> g16 <*> gi16 + <*> gi16 <*> gi16 + where g16 = getWord16be + g32 = getWord32be + gi16 = fromIntegral <$> getWord16be + g64 = getWord64be + + +-- | Header flags. +data HeaderFlags = HeaderFlags + { -- | Bit 0 - baseline for font at y=0; + _hfBaselineY0 :: !Bool + -- | Bit 1 - left sidebearing at x=0; + , _hfLeftSideBearing :: !Bool + -- | Bit 2 - instructions may depend on point size; + , _hfInstrDependPointSize :: !Bool + -- | Bit 3 - force ppem to integer values for all internal + -- scaler math; may use fractional ppem sizes if this bit + -- is clear; + , _hfForcePPEM :: !Bool + -- | Bit 4 - instructions may alter advance width (the + -- advance widths might not scale linearly); + , _hfAlterAdvance :: !Bool + } + deriving (Eq, Show) + +instance Binary HeaderFlags where + get = do + flags <- getWord16be + let at ix = flags `testBit` ix + return $ HeaderFlags (at 0) (at 1) (at 2) (at 3) (at 4) + + put (HeaderFlags a0 a1 a2 a3 a4) = + putWord16be . foldl' setter 0 $ zip [0..] [a0, a1, a2, a3, a4] + where setter acc (_, False) = acc + setter acc (ix, True) = setBit acc ix + diff --git a/src/Graphics/Text/TrueType/HorizontalInfo.hs b/src/Graphics/Text/TrueType/HorizontalInfo.hs --- a/src/Graphics/Text/TrueType/HorizontalInfo.hs +++ b/src/Graphics/Text/TrueType/HorizontalInfo.hs @@ -1,120 +1,120 @@ -{-# LANGUAGE CPP #-} -module Graphics.Text.TrueType.HorizontalInfo - ( HorizontalHeader( .. ) - , HorizontalMetricsTable( .. ) - , HorizontalMetric( .. ) - , getHorizontalMetrics - ) where - -#if !MIN_VERSION_base(4,8,0) -import Control.Applicative( (<*>), (<$>) ) -#endif - -import Control.DeepSeq( NFData( .. ) ) -import Control.Monad( when, replicateM_ ) -import Data.Word( Word16 ) -import Data.Int( Int16 ) -import Data.Binary( Binary( .. ) ) -import Data.Binary.Get( Get, getWord16be, getWord32be ) -import Data.Binary.Put( putWord16be, putWord32be ) -import qualified Data.Vector as V - -import Graphics.Text.TrueType.Types - --- | Describe the "hhea" TrueType table. -data HorizontalHeader = HorizontalHeader - { -- | Distance from baseline of highest ascender - _hheaAscent :: {-# UNPACK #-} !FWord - -- | Distance from baseline of lowest descender - , _hheaDescent :: {-# UNPACK #-} !FWord - -- | typographic line gap - , _hheaLineGap :: {-# UNPACK #-} !FWord - -- | must be consistent with horizontal metrics - , _hheaAdvanceWidthMax :: {-# UNPACK #-} !FWord - -- | must be consistent with horizontal metrics - , _hheaMinLeftSideBearing :: {-# UNPACK #-} !FWord - -- | must be consistent with horizontal metrics - , _hheaMinRightSideBearing :: {-# UNPACK #-} !FWord - -- | max(lsb + (xMax-xMin)) - , _hheaXmaxExtent :: {-# UNPACK #-} !FWord - -- | used to calculate the slope of the caret - -- (rise/run) set to 1 for vertical caret - , _hheaCaretSlopeRise :: {-# UNPACK #-} !Int16 - -- | 0 for vertical - , _hheaCaretSlopeRun :: {-# UNPACK #-} !Int16 - -- | set value to 0 for non-slanted fonts - , _hheaCaretOffset :: {-# UNPACK #-} !FWord - -- | 0 for current format - , _hheaMetricDataFormat :: {-# UNPACK #-} !Int16 - -- | number of advance widths in metrics table - , _hheaLongHorMetricCount :: {-# UNPACK #-} !Word16 - } - deriving (Eq, Show) - -instance NFData HorizontalHeader where - rnf (HorizontalHeader {}) = () - -instance Binary HorizontalHeader where - put hdr = do - putWord32be 0x00010000 - put $ _hheaAscent hdr - put $ _hheaDescent hdr - put $ _hheaLineGap hdr - put $ _hheaAdvanceWidthMax hdr - put $ _hheaMinLeftSideBearing hdr - put $ _hheaMinRightSideBearing hdr - put $ _hheaXmaxExtent hdr - putWord16be . fromIntegral $ _hheaCaretSlopeRise hdr - putWord16be . fromIntegral $ _hheaCaretSlopeRun hdr - put $ _hheaCaretOffset hdr - replicateM_ 4 $ putWord16be 0 - putWord16be . fromIntegral $ _hheaMetricDataFormat hdr - putWord16be $ _hheaLongHorMetricCount hdr - - get = do - ver <- getWord32be - when (ver /= 0x00010000) - (fail "Invalid HorizontalHeader (hhea) version") - startHdr <- HorizontalHeader - <$> get <*> get <*> get <*> get - <*> get <*> get <*> get - <*> (fromIntegral <$> getWord16be) - <*> (fromIntegral <$> getWord16be) - <*> get - replicateM_ 4 getWord16be -- reserved, don't care - startHdr <$> (fromIntegral <$> getWord16be) - <*> getWord16be - --- | Information of horizontal advance. -data HorizontalMetric = HorizontalMetric - { _hmtxAdvanceWidth :: {-# UNPACK #-} !Word16 - , _hmtxLeftSideBearing :: {-# UNPACK #-} !Int16 - } - deriving (Eq, Show) - -instance Binary HorizontalMetric where - put (HorizontalMetric adv bear) = - putWord16be adv >> putWord16be (fromIntegral bear) - - get = HorizontalMetric <$> g16 <*> (fromIntegral <$> g16) - where g16 = getWord16be - --- | For every glyph (indexed by the glyph index), --- provide horizontal information. -data HorizontalMetricsTable = HorizontalMetricsTable - { _glyphMetrics :: !(V.Vector HorizontalMetric) - } - deriving (Eq, Show) - -getHorizontalMetrics :: Int -- ^ Metrics count - -> Int -- ^ Glyph count - -> Get HorizontalMetricsTable -getHorizontalMetrics numberOfMetrics glyphCount = do - hMetrics <- V.replicateM numberOfMetrics get - let lastAdvance = _hmtxAdvanceWidth $ V.last hMetrics - run <- V.replicateM sideBearingCount $ - HorizontalMetric lastAdvance . fromIntegral <$> getWord16be - return $ HorizontalMetricsTable $ V.concat [hMetrics, run] - where - sideBearingCount = glyphCount - numberOfMetrics - +{-# LANGUAGE CPP #-} +module Graphics.Text.TrueType.HorizontalInfo + ( HorizontalHeader( .. ) + , HorizontalMetricsTable( .. ) + , HorizontalMetric( .. ) + , getHorizontalMetrics + ) where + +#if !MIN_VERSION_base(4,8,0) +import Control.Applicative( (<*>), (<$>) ) +#endif + +import Control.DeepSeq( NFData( .. ) ) +import Control.Monad( when, replicateM_ ) +import Data.Word( Word16 ) +import Data.Int( Int16 ) +import Data.Binary( Binary( .. ) ) +import Data.Binary.Get( Get, getWord16be, getWord32be ) +import Data.Binary.Put( putWord16be, putWord32be ) +import qualified Data.Vector as V + +import Graphics.Text.TrueType.Types + +-- | Describe the "hhea" TrueType table. +data HorizontalHeader = HorizontalHeader + { -- | Distance from baseline of highest ascender + _hheaAscent :: {-# UNPACK #-} !FWord + -- | Distance from baseline of lowest descender + , _hheaDescent :: {-# UNPACK #-} !FWord + -- | typographic line gap + , _hheaLineGap :: {-# UNPACK #-} !FWord + -- | must be consistent with horizontal metrics + , _hheaAdvanceWidthMax :: {-# UNPACK #-} !FWord + -- | must be consistent with horizontal metrics + , _hheaMinLeftSideBearing :: {-# UNPACK #-} !FWord + -- | must be consistent with horizontal metrics + , _hheaMinRightSideBearing :: {-# UNPACK #-} !FWord + -- | max(lsb + (xMax-xMin)) + , _hheaXmaxExtent :: {-# UNPACK #-} !FWord + -- | used to calculate the slope of the caret + -- (rise/run) set to 1 for vertical caret + , _hheaCaretSlopeRise :: {-# UNPACK #-} !Int16 + -- | 0 for vertical + , _hheaCaretSlopeRun :: {-# UNPACK #-} !Int16 + -- | set value to 0 for non-slanted fonts + , _hheaCaretOffset :: {-# UNPACK #-} !FWord + -- | 0 for current format + , _hheaMetricDataFormat :: {-# UNPACK #-} !Int16 + -- | number of advance widths in metrics table + , _hheaLongHorMetricCount :: {-# UNPACK #-} !Word16 + } + deriving (Eq, Show) + +instance NFData HorizontalHeader where + rnf (HorizontalHeader {}) = () + +instance Binary HorizontalHeader where + put hdr = do + putWord32be 0x00010000 + put $ _hheaAscent hdr + put $ _hheaDescent hdr + put $ _hheaLineGap hdr + put $ _hheaAdvanceWidthMax hdr + put $ _hheaMinLeftSideBearing hdr + put $ _hheaMinRightSideBearing hdr + put $ _hheaXmaxExtent hdr + putWord16be . fromIntegral $ _hheaCaretSlopeRise hdr + putWord16be . fromIntegral $ _hheaCaretSlopeRun hdr + put $ _hheaCaretOffset hdr + replicateM_ 4 $ putWord16be 0 + putWord16be . fromIntegral $ _hheaMetricDataFormat hdr + putWord16be $ _hheaLongHorMetricCount hdr + + get = do + ver <- getWord32be + when (ver /= 0x00010000) + (fail "Invalid HorizontalHeader (hhea) version") + startHdr <- HorizontalHeader + <$> get <*> get <*> get <*> get + <*> get <*> get <*> get + <*> (fromIntegral <$> getWord16be) + <*> (fromIntegral <$> getWord16be) + <*> get + replicateM_ 4 getWord16be -- reserved, don't care + startHdr <$> (fromIntegral <$> getWord16be) + <*> getWord16be + +-- | Information of horizontal advance. +data HorizontalMetric = HorizontalMetric + { _hmtxAdvanceWidth :: {-# UNPACK #-} !Word16 + , _hmtxLeftSideBearing :: {-# UNPACK #-} !Int16 + } + deriving (Eq, Show) + +instance Binary HorizontalMetric where + put (HorizontalMetric adv bear) = + putWord16be adv >> putWord16be (fromIntegral bear) + + get = HorizontalMetric <$> g16 <*> (fromIntegral <$> g16) + where g16 = getWord16be + +-- | For every glyph (indexed by the glyph index), +-- provide horizontal information. +data HorizontalMetricsTable = HorizontalMetricsTable + { _glyphMetrics :: !(V.Vector HorizontalMetric) + } + deriving (Eq, Show) + +getHorizontalMetrics :: Int -- ^ Metrics count + -> Int -- ^ Glyph count + -> Get HorizontalMetricsTable +getHorizontalMetrics numberOfMetrics glyphCount = do + hMetrics <- V.replicateM numberOfMetrics get + let lastAdvance = _hmtxAdvanceWidth $ V.last hMetrics + run <- V.replicateM sideBearingCount $ + HorizontalMetric lastAdvance . fromIntegral <$> getWord16be + return $ HorizontalMetricsTable $ V.concat [hMetrics, run] + where + sideBearingCount = glyphCount - numberOfMetrics + diff --git a/src/Graphics/Text/TrueType/MaxpTable.hs b/src/Graphics/Text/TrueType/MaxpTable.hs --- a/src/Graphics/Text/TrueType/MaxpTable.hs +++ b/src/Graphics/Text/TrueType/MaxpTable.hs @@ -1,59 +1,59 @@ -{-# LANGUAGE CPP #-} -module Graphics.Text.TrueType.MaxpTable( MaxpTable( .. ) ) where - -#if !MIN_VERSION_base(4,8,0) -import Control.Applicative( (<*>), (<$>) ) -#endif - -import Control.DeepSeq( NFData( .. ) ) -import Data.Word( Word16 ) -import Data.Binary( Binary( .. ) ) -import Data.Binary.Get( getWord16be ) - -import Graphics.Text.TrueType.Types - -data MaxpTable = MaxpTable - { -- | version number 0x00010000 for version 1.0. - _maxpTableVersion :: !Fixed - -- | The number of glyphs in the font. - , _maxpnumGlyphs :: !Word16 - -- | Maximum points in a non-composite glyph. - , _maxpmaxPoints :: !Word16 - -- | Maximum contours in a non-composite glyph. - , _maxpmaxContours :: !Word16 - -- | Maximum points in a composite glyph. - , _maxpmaxCompositePoints :: !Word16 - -- | Maximum contours in a composite glyph. - , _maxpmaxCompositeContours :: !Word16 - -- | 1 if instructions do not use the twilight zone (Z0), or 2 if instructions do use Z0; should be set to 2 in most cases. - , _maxpmaxZones :: !Word16 - -- | Maximum points used in Z0. - , _maxpmaxTwilightPoints :: !Word16 - -- | Number of Storage Area locations. - , _maxpmaxStorage :: !Word16 - -- | Number of FDEFs. - , _maxpmaxFunctionDefs :: !Word16 - -- | Number of IDEFs. - , _maxpmaxInstructionDefs :: !Word16 - -- | Maximum stack depth . - , _maxpmaxStackElements :: !Word16 - -- | Maximum byte count for glyph instructions. - , _maxpmaxSizeOfInstructions :: !Word16 - -- | Maximum number of components referenced at "top level" for any composite glyph. - , _maxpmaxComponentElements :: !Word16 - -- | Maximum levels of recursion; 1 for simple components. - , _maxpmaxComponentDepth :: !Word16 - } - deriving (Eq, Show) - -instance NFData MaxpTable where - rnf (MaxpTable {}) = () - -instance Binary MaxpTable where - put _ = fail "Unimplemented" - get = MaxpTable - <$> get <*> g16 <*> g16 <*> g16 <*> g16 <*> g16 - <*> g16 <*> g16 <*> g16 <*> g16 <*> g16 <*> g16 - <*> g16 <*> g16 <*> g16 - where g16 = getWord16be - +{-# LANGUAGE CPP #-} +module Graphics.Text.TrueType.MaxpTable( MaxpTable( .. ) ) where + +#if !MIN_VERSION_base(4,8,0) +import Control.Applicative( (<*>), (<$>) ) +#endif + +import Control.DeepSeq( NFData( .. ) ) +import Data.Word( Word16 ) +import Data.Binary( Binary( .. ) ) +import Data.Binary.Get( getWord16be ) + +import Graphics.Text.TrueType.Types + +data MaxpTable = MaxpTable + { -- | version number 0x00010000 for version 1.0. + _maxpTableVersion :: !Fixed + -- | The number of glyphs in the font. + , _maxpnumGlyphs :: !Word16 + -- | Maximum points in a non-composite glyph. + , _maxpmaxPoints :: !Word16 + -- | Maximum contours in a non-composite glyph. + , _maxpmaxContours :: !Word16 + -- | Maximum points in a composite glyph. + , _maxpmaxCompositePoints :: !Word16 + -- | Maximum contours in a composite glyph. + , _maxpmaxCompositeContours :: !Word16 + -- | 1 if instructions do not use the twilight zone (Z0), or 2 if instructions do use Z0; should be set to 2 in most cases. + , _maxpmaxZones :: !Word16 + -- | Maximum points used in Z0. + , _maxpmaxTwilightPoints :: !Word16 + -- | Number of Storage Area locations. + , _maxpmaxStorage :: !Word16 + -- | Number of FDEFs. + , _maxpmaxFunctionDefs :: !Word16 + -- | Number of IDEFs. + , _maxpmaxInstructionDefs :: !Word16 + -- | Maximum stack depth . + , _maxpmaxStackElements :: !Word16 + -- | Maximum byte count for glyph instructions. + , _maxpmaxSizeOfInstructions :: !Word16 + -- | Maximum number of components referenced at "top level" for any composite glyph. + , _maxpmaxComponentElements :: !Word16 + -- | Maximum levels of recursion; 1 for simple components. + , _maxpmaxComponentDepth :: !Word16 + } + deriving (Eq, Show) + +instance NFData MaxpTable where + rnf (MaxpTable {}) = () + +instance Binary MaxpTable where + put _ = fail "Unimplemented" + get = MaxpTable + <$> get <*> g16 <*> g16 <*> g16 <*> g16 <*> g16 + <*> g16 <*> g16 <*> g16 <*> g16 <*> g16 <*> g16 + <*> g16 <*> g16 <*> g16 + where g16 = getWord16be + diff --git a/src/Graphics/Text/TrueType/Name.hs b/src/Graphics/Text/TrueType/Name.hs --- a/src/Graphics/Text/TrueType/Name.hs +++ b/src/Graphics/Text/TrueType/Name.hs @@ -1,122 +1,122 @@ -{-# LANGUAGE CPP #-} -module Graphics.Text.TrueType.Name - ( NameTable - , NameRecords - , fontFamilyName - ) where - -#if !MIN_VERSION_base(4,8,0) -import Data.Monoid( mempty ) -import Control.Applicative( (<$>), (<*>), pure ) -#endif - -import Control.DeepSeq( NFData( .. ) ) -import Control.Monad( when, replicateM ) -import Data.Foldable( asum ) -import Data.Function( on ) -import Data.List( maximumBy ) -import Data.Maybe( fromMaybe ) -import Data.Binary( Binary( .. ) ) -import Data.Binary.Get( getWord16be, getByteString ) -import Data.Binary.Put( putWord16be ) -import Data.Word( Word16 ) -import qualified Data.Vector as V -import qualified Data.ByteString as B -import qualified Data.Text as T -import qualified Data.Text.Encoding as TE - -import Graphics.Text.TrueType.LanguageIds - -data NameTable = NameTable - { _ntRecords :: !(V.Vector NameRecords) } - deriving Show - -instance NFData NameTable where - rnf (NameTable {}) = () - -instance Binary NameTable where - put _ = fail "Binary.put NameTable - unimplemented" - get = do - nameFormatId <- getWord16be - when (nameFormatId /= 0) $ - fail "Invalid name table format" - count <- getWord16be - stringOffset <- getWord16be - records <- replicateM (fromIntegral count) get - let maxRec = maximumBy (compare `on` _nrOffset) records - toFetch = fromIntegral (_nrOffset maxRec) + fromIntegral (_nrLength maxRec) - - fromIntegral stringOffset - - strTable <- getByteString toFetch - let fetcher r = r { _nrString = B.take iLength $ B.drop iOffset strTable } - where iLength = fromIntegral $ _nrLength r - iOffset = fromIntegral $ _nrOffset r - - return . NameTable . V.fromListN (fromIntegral count) $ map fetcher records - -data NameRecords = NameRecords - { _nrPlatoformId :: {-# UNPACK #-} !Word16 - , _nrPlatformSpecificId :: {-# UNPACK #-} !Word16 - , _nrLanguageId :: {-# UNPACK #-} !Word16 - , _nrNameId :: {-# UNPACK #-} !Word16 - , _nrLength :: {-# UNPACK #-} !Word16 - , _nrOffset :: {-# UNPACK #-} !Word16 - , _nrString :: !B.ByteString - } - deriving Show - -fontFamilyName :: NameTable -> T.Text -fontFamilyName (NameTable { _ntRecords = records }) = - fromMaybe T.empty . asum $ transform <$> - [ (selectorUnicode, utf16Decoder) - , (selectorMac, utf8Decoder) - , (selectorWin0, utf16Decoder) - , (selectorWin1, utf16Decoder) - ] - where - utf16Decoder = TE.decodeUtf16BE . _nrString - utf8Decoder = TE.decodeUtf8 . _nrString - transform (selector, decoder) = - decoder <$> V.find selector records - - fontFamilyId = 1 - - windowsPlatform = - platformToWord PlatformWindows - selectorWin0 r = - _nrNameId r == fontFamilyId && - _nrPlatoformId r == windowsPlatform && - _nrPlatformSpecificId r == 0 - - selectorWin1 r = - _nrNameId r == fontFamilyId && - _nrPlatoformId r == windowsPlatform && - _nrPlatformSpecificId r == 1 - - macPlatform = - platformToWord PlatformMacintosh - selectorMac r = - _nrNameId r == fontFamilyId && - _nrPlatoformId r == macPlatform && - _nrPlatformSpecificId r == 0 - - unicodePlatform = - platformToWord PlatformUnicode - semanticUnicode2 = - unicodePlatformSpecificToId UnicodeBMPOnly2_0 - selectorUnicode r = - _nrNameId r == fontFamilyId && - _nrPlatoformId r == unicodePlatform && - _nrPlatformSpecificId r == semanticUnicode2 - -instance Binary NameRecords where - get = NameRecords <$> g16 <*> g16 <*> g16 - <*> g16 <*> g16 <*> g16 - <*> pure mempty - where g16 = getWord16be - - put (NameRecords p ps l n len ofs _) = - p16 p >> p16 ps >> p16 l >> p16 n >> p16 len >> p16 ofs - where p16 = putWord16be - - +{-# LANGUAGE CPP #-} +module Graphics.Text.TrueType.Name + ( NameTable + , NameRecords + , fontFamilyName + ) where + +#if !MIN_VERSION_base(4,8,0) +import Data.Monoid( mempty ) +import Control.Applicative( (<$>), (<*>), pure ) +#endif + +import Control.DeepSeq( NFData( .. ) ) +import Control.Monad( when, replicateM ) +import Data.Foldable( asum ) +import Data.Function( on ) +import Data.List( maximumBy ) +import Data.Maybe( fromMaybe ) +import Data.Binary( Binary( .. ) ) +import Data.Binary.Get( getWord16be, getByteString ) +import Data.Binary.Put( putWord16be ) +import Data.Word( Word16 ) +import qualified Data.Vector as V +import qualified Data.ByteString as B +import qualified Data.Text as T +import qualified Data.Text.Encoding as TE + +import Graphics.Text.TrueType.LanguageIds + +data NameTable = NameTable + { _ntRecords :: !(V.Vector NameRecords) } + deriving Show + +instance NFData NameTable where + rnf (NameTable {}) = () + +instance Binary NameTable where + put _ = fail "Binary.put NameTable - unimplemented" + get = do + nameFormatId <- getWord16be + when (nameFormatId /= 0) $ + fail "Invalid name table format" + count <- getWord16be + stringOffset <- getWord16be + records <- replicateM (fromIntegral count) get + let maxRec = maximumBy (compare `on` _nrOffset) records + toFetch = fromIntegral (_nrOffset maxRec) + fromIntegral (_nrLength maxRec) + - fromIntegral stringOffset + + strTable <- getByteString toFetch + let fetcher r = r { _nrString = B.take iLength $ B.drop iOffset strTable } + where iLength = fromIntegral $ _nrLength r + iOffset = fromIntegral $ _nrOffset r + + return . NameTable . V.fromListN (fromIntegral count) $ map fetcher records + +data NameRecords = NameRecords + { _nrPlatoformId :: {-# UNPACK #-} !Word16 + , _nrPlatformSpecificId :: {-# UNPACK #-} !Word16 + , _nrLanguageId :: {-# UNPACK #-} !Word16 + , _nrNameId :: {-# UNPACK #-} !Word16 + , _nrLength :: {-# UNPACK #-} !Word16 + , _nrOffset :: {-# UNPACK #-} !Word16 + , _nrString :: !B.ByteString + } + deriving Show + +fontFamilyName :: NameTable -> T.Text +fontFamilyName (NameTable { _ntRecords = records }) = + fromMaybe T.empty . asum $ transform <$> + [ (selectorUnicode, utf16Decoder) + , (selectorMac, utf8Decoder) + , (selectorWin0, utf16Decoder) + , (selectorWin1, utf16Decoder) + ] + where + utf16Decoder = TE.decodeUtf16BE . _nrString + utf8Decoder = TE.decodeUtf8 . _nrString + transform (selector, decoder) = + decoder <$> V.find selector records + + fontFamilyId = 1 + + windowsPlatform = + platformToWord PlatformWindows + selectorWin0 r = + _nrNameId r == fontFamilyId && + _nrPlatoformId r == windowsPlatform && + _nrPlatformSpecificId r == 0 + + selectorWin1 r = + _nrNameId r == fontFamilyId && + _nrPlatoformId r == windowsPlatform && + _nrPlatformSpecificId r == 1 + + macPlatform = + platformToWord PlatformMacintosh + selectorMac r = + _nrNameId r == fontFamilyId && + _nrPlatoformId r == macPlatform && + _nrPlatformSpecificId r == 0 + + unicodePlatform = + platformToWord PlatformUnicode + semanticUnicode2 = + unicodePlatformSpecificToId UnicodeBMPOnly2_0 + selectorUnicode r = + _nrNameId r == fontFamilyId && + _nrPlatoformId r == unicodePlatform && + _nrPlatformSpecificId r == semanticUnicode2 + +instance Binary NameRecords where + get = NameRecords <$> g16 <*> g16 <*> g16 + <*> g16 <*> g16 <*> g16 + <*> pure mempty + where g16 = getWord16be + + put (NameRecords p ps l n len ofs _) = + p16 p >> p16 ps >> p16 l >> p16 n >> p16 len >> p16 ofs + where p16 = putWord16be + + diff --git a/src/Graphics/Text/TrueType/OffsetTable.hs b/src/Graphics/Text/TrueType/OffsetTable.hs --- a/src/Graphics/Text/TrueType/OffsetTable.hs +++ b/src/Graphics/Text/TrueType/OffsetTable.hs @@ -1,89 +1,89 @@ -{-# LANGUAGE CPP #-} -module Graphics.Text.TrueType.OffsetTable - ( OffsetTableHeader( .. ) - , OffsetTable( .. ) - , TableDirectoryEntry( .. ) - , filterTable - ) where - -#if !MIN_VERSION_base(4,8,0) -import Control.Applicative( (<*>), (<$>) ) -#endif - -import Data.Word( Word16, Word32 ) -import Data.Binary( Binary( .. ) ) -import Data.Binary.Get( getWord16be - , getWord32be - , getByteString - ) - -import Data.Binary.Put( putWord16be - , putWord32be - , putByteString - ) - -import qualified Data.Vector as V -import qualified Data.ByteString.Char8 as BC - -import Graphics.Text.TrueType.Types - -data OffsetTableHeader = OffsetTableHeader - { -- | sfnt version 0x00010000 for version 1.0. - _othSfntVersion :: !Fixed - -- | numTables Number of tables. - , _othTableCount :: !Word16 - -- | searchRange (Maximum power of 2 ? numTables) x 16. - , _othSearchRange :: !Word16 - -- | entrySelector Log2(maximum power of 2 ? numTables). - , _othEntrySelector :: !Word16 - -- | rangeShift NumTables x 16-searchRange. - , _othRangeShift :: !Word16 - } - deriving (Eq, Show) - -instance Binary OffsetTableHeader where - get = OffsetTableHeader <$> get <*> g16 <*> g16 <*> g16 <*> g16 - where g16 = getWord16be - put (OffsetTableHeader ver c sr es rs) = - put ver >> p16 c >> p16 sr >> p16 es >> p16 rs - where p16 = putWord16be - -data TableDirectoryEntry = TableDirectoryEntry - { -- | tag 4 -byte identifier. - _tdeTag :: !BC.ByteString - -- | CheckSum for this table. - , _tdeChecksum :: !Word32 - -- | Offset from beginning of TrueType font file. - , _tdeOffset :: !Word32 - -- | Length of this table. - , _tdeLength :: !Word32 - } - deriving (Eq, Show) - -filterTable :: (BC.ByteString -> Bool) -> OffsetTable - -> OffsetTable -filterTable f table = - table { _otEntries = V.filter (f . _tdeTag) $ _otEntries table } - -instance Binary TableDirectoryEntry where - get = TableDirectoryEntry <$> getByteString 4 <*> g32 <*> g32 <*> g32 - where g32 = getWord32be - put (TableDirectoryEntry tag chk offset ln) = - putByteString tag >> p32 chk >> p32 offset >> p32 ln - where p32 = putWord32be - -data OffsetTable = OffsetTable - { _otHeader :: !OffsetTableHeader - , _otEntries :: !(V.Vector TableDirectoryEntry) - } - deriving (Eq, Show) - -instance Binary OffsetTable where - put (OffsetTable hdr entries) = - put hdr >> V.forM_ entries put - - get = do - hdr <- get - let count = fromIntegral $ _othTableCount hdr - OffsetTable hdr <$> V.replicateM count get - +{-# LANGUAGE CPP #-} +module Graphics.Text.TrueType.OffsetTable + ( OffsetTableHeader( .. ) + , OffsetTable( .. ) + , TableDirectoryEntry( .. ) + , filterTable + ) where + +#if !MIN_VERSION_base(4,8,0) +import Control.Applicative( (<*>), (<$>) ) +#endif + +import Data.Word( Word16, Word32 ) +import Data.Binary( Binary( .. ) ) +import Data.Binary.Get( getWord16be + , getWord32be + , getByteString + ) + +import Data.Binary.Put( putWord16be + , putWord32be + , putByteString + ) + +import qualified Data.Vector as V +import qualified Data.ByteString.Char8 as BC + +import Graphics.Text.TrueType.Types + +data OffsetTableHeader = OffsetTableHeader + { -- | sfnt version 0x00010000 for version 1.0. + _othSfntVersion :: !Fixed + -- | numTables Number of tables. + , _othTableCount :: !Word16 + -- | searchRange (Maximum power of 2 ? numTables) x 16. + , _othSearchRange :: !Word16 + -- | entrySelector Log2(maximum power of 2 ? numTables). + , _othEntrySelector :: !Word16 + -- | rangeShift NumTables x 16-searchRange. + , _othRangeShift :: !Word16 + } + deriving (Eq, Show) + +instance Binary OffsetTableHeader where + get = OffsetTableHeader <$> get <*> g16 <*> g16 <*> g16 <*> g16 + where g16 = getWord16be + put (OffsetTableHeader ver c sr es rs) = + put ver >> p16 c >> p16 sr >> p16 es >> p16 rs + where p16 = putWord16be + +data TableDirectoryEntry = TableDirectoryEntry + { -- | tag 4 -byte identifier. + _tdeTag :: !BC.ByteString + -- | CheckSum for this table. + , _tdeChecksum :: !Word32 + -- | Offset from beginning of TrueType font file. + , _tdeOffset :: !Word32 + -- | Length of this table. + , _tdeLength :: !Word32 + } + deriving (Eq, Show) + +filterTable :: (BC.ByteString -> Bool) -> OffsetTable + -> OffsetTable +filterTable f table = + table { _otEntries = V.filter (f . _tdeTag) $ _otEntries table } + +instance Binary TableDirectoryEntry where + get = TableDirectoryEntry <$> getByteString 4 <*> g32 <*> g32 <*> g32 + where g32 = getWord32be + put (TableDirectoryEntry tag chk offset ln) = + putByteString tag >> p32 chk >> p32 offset >> p32 ln + where p32 = putWord32be + +data OffsetTable = OffsetTable + { _otHeader :: !OffsetTableHeader + , _otEntries :: !(V.Vector TableDirectoryEntry) + } + deriving (Eq, Show) + +instance Binary OffsetTable where + put (OffsetTable hdr entries) = + put hdr >> V.forM_ entries put + + get = do + hdr <- get + let count = fromIntegral $ _othTableCount hdr + OffsetTable hdr <$> V.replicateM count get + diff --git a/src/Graphics/Text/TrueType/Types.hs b/src/Graphics/Text/TrueType/Types.hs --- a/src/Graphics/Text/TrueType/Types.hs +++ b/src/Graphics/Text/TrueType/Types.hs @@ -1,48 +1,48 @@ -{-# LANGUAGE CPP #-} -module Graphics.Text.TrueType.Types - ( Fixed( .. ) - , FWord( .. ) - , F26Dot6( .. ) - ) where - -#if !MIN_VERSION_base(4,8,0) -import Control.Applicative( (<$>), (<*>) ) -#endif - -import Data.Int( Int32 ) -import Data.Word( Word16 ) -import Data.Binary( Binary( .. ) ) -import Data.Binary.Get( getWord16be) -import Data.Binary.Put( putWord16be ) - -data Fixed = Fixed Word16 Word16 - deriving (Eq, Show) - -instance Binary Fixed where - get = Fixed <$> getWord16be <*> getWord16be - put (Fixed a b) = putWord16be a >> putWord16be b - -newtype FWord = FWord Word16 - deriving (Eq, Show) - -instance Binary FWord where - put (FWord w) = putWord16be w - get = FWord <$> getWord16be - -newtype F26Dot6 = F26Dot6 Int32 - deriving (Eq, Show, Ord) - -instance Num F26Dot6 where - (F26Dot6 a) + (F26Dot6 b) = F26Dot6 $ a + b - (F26Dot6 a) - (F26Dot6 b) = F26Dot6 $ a - b - (F26Dot6 a) * (F26Dot6 b) = F26Dot6 $ (a * b) `div` 64 - negate (F26Dot6 a) = F26Dot6 $ negate a - abs (F26Dot6 a) = F26Dot6 $ abs a - signum (F26Dot6 a) = F26Dot6 $ signum a * 64 - fromInteger a = F26Dot6 $ fromInteger a * 64 - -instance Fractional F26Dot6 where - fromRational a = F26Dot6 $ floor ad - where ad = fromRational a * 64 :: Double - (F26Dot6 a) / (F26Dot6 b) = F26Dot6 $ (a * 64) `div` b - +{-# LANGUAGE CPP #-} +module Graphics.Text.TrueType.Types + ( Fixed( .. ) + , FWord( .. ) + , F26Dot6( .. ) + ) where + +#if !MIN_VERSION_base(4,8,0) +import Control.Applicative( (<$>), (<*>) ) +#endif + +import Data.Int( Int32 ) +import Data.Word( Word16 ) +import Data.Binary( Binary( .. ) ) +import Data.Binary.Get( getWord16be) +import Data.Binary.Put( putWord16be ) + +data Fixed = Fixed Word16 Word16 + deriving (Eq, Show) + +instance Binary Fixed where + get = Fixed <$> getWord16be <*> getWord16be + put (Fixed a b) = putWord16be a >> putWord16be b + +newtype FWord = FWord Word16 + deriving (Eq, Show) + +instance Binary FWord where + put (FWord w) = putWord16be w + get = FWord <$> getWord16be + +newtype F26Dot6 = F26Dot6 Int32 + deriving (Eq, Show, Ord) + +instance Num F26Dot6 where + (F26Dot6 a) + (F26Dot6 b) = F26Dot6 $ a + b + (F26Dot6 a) - (F26Dot6 b) = F26Dot6 $ a - b + (F26Dot6 a) * (F26Dot6 b) = F26Dot6 $ (a * b) `div` 64 + negate (F26Dot6 a) = F26Dot6 $ negate a + abs (F26Dot6 a) = F26Dot6 $ abs a + signum (F26Dot6 a) = F26Dot6 $ signum a * 64 + fromInteger a = F26Dot6 $ fromInteger a * 64 + +instance Fractional F26Dot6 where + fromRational a = F26Dot6 $ floor ad + where ad = fromRational a * 64 :: Double + (F26Dot6 a) / (F26Dot6 b) = F26Dot6 $ (a * 64) `div` b +