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Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! + + diff --git a/Graphics/Rendering/Cairo/SVG.chs b/Graphics/Rendering/Cairo/SVG.chs new file mode 100644 --- /dev/null +++ b/Graphics/Rendering/Cairo/SVG.chs @@ -0,0 +1,247 @@ +{-# LANGUAGE CPP #-} +----------------------------------------------------------------------------- +-- | +-- Module : Graphics.Rendering.Cairo.SVG +-- Copyright : (c) 2005 Duncan Coutts, Paolo Martini +-- License : BSD-style (see cairo/COPYRIGHT) +-- +-- Maintainer : gtk2hs-devel@lists.sourceforge.net +-- Stability : experimental +-- Portability : portable +-- +-- The SVG extension to the Cairo 2D graphics library. +-- +----------------------------------------------------------------------------- + +module Graphics.Rendering.Cairo.SVG ( + -- * Convenience API + + -- | These operations render an SVG image directly in the current 'Render' + -- contect. Because they operate in the cairo 'Render' monad they are + -- affected by the current transformation matrix. So it is possible, for + -- example, to scale or rotate an SVG image. + -- + -- In the following example we scale an SVG image to a unit square: + -- + -- > let (width, height) = svgGetSize in + -- > do scale (1/width) (1/height) + -- > svgRender svg + + svgRenderFromFile, + svgRenderFromHandle, + svgRenderFromString, + + -- * Standard API + + -- | With this API there are seperate functions for loading the SVG and + -- rendering it. This allows us to be more effecient in the case that an SVG + -- image is used many times - since it can be loaded just once and rendered + -- many times. With the convenience API above the SVG would be parsed and + -- processed each time it is drawn. + + SVG, + svgRender, + svgGetSize, + + -- ** Block scoped versions + + -- | These versions of the SVG loading operations give temporary access + -- to the 'SVG' object within the scope of the handler function. These + -- operations guarantee that the resources for the SVG object are deallocated + -- at the end of the handler block. If this form of resource allocation is + -- too restrictive you can use the GC-managed versions below. + -- + -- These versions are ofen used in the following style: + -- + -- > withSvgFromFile "foo.svg" $ \svg -> do + -- > ... + -- > svgRender svg + -- > ... + + withSvgFromFile, + withSvgFromHandle, + withSvgFromString, + + -- ** GC-managed versions + + -- | These versions of the SVG loading operations use the standard Haskell + -- garbage collector to manage the resources associated with the 'SVG' object. + -- As such they are more convenient to use but the GC cannot give + -- strong guarantees about when the resources associated with the 'SVG' object + -- will be released. In most circumstances this is not a problem, especially + -- if the SVG files being used are not very big. + + svgNewFromFile, + svgNewFromHandle, + svgNewFromString, + ) where + +import Control.Monad (when) +import Foreign +import Foreign.C +import Control.Monad.Reader (ask, liftIO) +import System.IO (Handle, openFile, IOMode(ReadMode), hGetBuf) + +import System.Glib.GError (GError(GError), checkGError) +import System.Glib.GObject (GObject(..), GObjectClass(..), constructNewGObject, + unGObject, objectUnref) + +import Graphics.Rendering.Cairo.Internal (Render, bracketR) +{# import Graphics.Rendering.Cairo.Types #} (Cairo(Cairo)) + +{# context lib="librsvg" prefix="rsvg_handle" #} + +--------------------- +-- Types +-- + +{# pointer *RsvgHandle as SVG foreign newtype #} + +mkSVG = (SVG, objectUnref) +unSVG (SVG obj) = obj + +instance GObjectClass SVG where + toGObject = GObject . castForeignPtr . unSVG + unsafeCastGObject = SVG . castForeignPtr . unGObject + +--------------------- +-- Basic API +-- + +-- block scoped versions + +withSvgFromFile :: FilePath -> (SVG -> Render a) -> Render a +withSvgFromFile file action = + withSVG $ \svg -> do + liftIO $ svgParseFromFile file svg + action svg + +withSvgFromHandle :: Handle -> (SVG -> Render a) -> Render a +withSvgFromHandle hnd action = + withSVG $ \svg -> do + liftIO $ svgParseFromHandle hnd svg + action svg + +withSvgFromString :: String -> (SVG -> Render a) -> Render a +withSvgFromString str action = + withSVG $ \svg -> do + liftIO $ svgParseFromString str svg + action svg + +withSVG :: (SVG -> Render a) -> Render a +withSVG = + bracketR (do + {# call g_type_init #} + svgPtr <- {# call unsafe new #} + svgPtr' <- newForeignPtr_ svgPtr + return (SVG svgPtr')) + (\(SVG fptr) -> withForeignPtr fptr $ \ptr -> + {# call unsafe g_object_unref #} (castPtr ptr)) + +-- GC managed versions + +svgNewFromFile :: FilePath -> IO SVG +svgNewFromFile file = do + svg <- svgNew + svgParseFromFile file svg + return svg + +svgNewFromHandle :: Handle -> IO SVG +svgNewFromHandle hnd = do + svg <- svgNew + svgParseFromHandle hnd svg + return svg + +svgNewFromString :: String -> IO SVG +svgNewFromString str = do + svg <- svgNew + svgParseFromString str svg + return svg + +svgNew :: IO SVG +svgNew = do + {# call g_type_init #} + constructNewGObject mkSVG {# call unsafe new #} + + +-- internal implementation + +svgParseFromFile :: FilePath -> SVG -> IO () +svgParseFromFile file svg = do + hnd <- openFile file ReadMode + svgParseFromHandle hnd svg + +svgParseFromHandle :: Handle -> SVG -> IO () +svgParseFromHandle hnd svg = + allocaBytes 4096 $ \bufferPtr -> do + let loop = do + count <- hGetBuf hnd bufferPtr 4096 + when (count > 0) + (checkStatus $ {# call unsafe rsvg_handle_write #} + svg (castPtr bufferPtr) (fromIntegral count)) + when (count == 4096) loop + loop + checkStatus $ {# call unsafe rsvg_handle_close #} svg + +svgParseFromString :: String -> SVG -> IO () +svgParseFromString str svg = do + let loop "" = return () + loop str = + case splitAt 4096 str of + (chunk, str') -> do + withCStringLen chunk $ \(chunkPtr, len) -> + checkStatus $ {# call unsafe rsvg_handle_write #} + svg (castPtr chunkPtr) (fromIntegral len) + loop str' + loop str + checkStatus $ {# call unsafe rsvg_handle_close #} svg + +-- actually render it + +-- | render an SVG file +-- +-- Returns @False@ if an error was detected. +-- On librsvg before 2.22.3, @svgRender@ always returns @True@. +svgRender :: SVG -> Render Bool +svgRender svg = do + cr <- ask + ret <- liftIO $ {# call unsafe render_cairo #} svg cr +#if ! LIBRSVG_CHECK_VERSION(2,22,3) + return True +#else + return (ret /= 0) +#endif + +-- | Get the width and height of the SVG image. +-- +svgGetSize :: + SVG + -> (Int, Int) -- ^ @(width, height)@ +svgGetSize svg = unsafePerformIO $ + allocaBytes {# sizeof RsvgDimensionData #} $ \dimentionsPtr -> do + {# call unsafe get_dimensions #} svg dimentionsPtr + width <- {# get RsvgDimensionData->width #} dimentionsPtr + height <- {# get RsvgDimensionData->height #} dimentionsPtr + return (fromIntegral width, fromIntegral height) + +--------------------- +-- Convenience API +-- + +svgRenderFromFile :: FilePath -> Render Bool +svgRenderFromFile file = withSvgFromFile file svgRender + +svgRenderFromHandle :: Handle -> Render Bool +svgRenderFromHandle hnd = withSvgFromHandle hnd svgRender + +svgRenderFromString :: String -> Render Bool +svgRenderFromString str = withSvgFromString str svgRender + +--------------------- +-- Utils +-- + +checkStatus :: (Ptr (Ptr ()) -> IO CInt) -> IO () +checkStatus action = + checkGError (\ptr -> action ptr >> return ()) + (\(GError domain code msg) -> fail ("svg cairo error: " ++ msg)) diff --git a/Gtk2HsSetup.hs b/Gtk2HsSetup.hs new file mode 100644 --- /dev/null +++ b/Gtk2HsSetup.hs @@ -0,0 +1,486 @@ +{-# LANGUAGE CPP #-} + +#define CABAL_VERSION_ENCODE(major, minor, micro) ( \ + ((major) * 10000) \ + + ((minor) * 100) \ + + ((micro) * 1)) + +#define CABAL_VERSION_CHECK(major,minor,micro) \ + (CABAL_VERSION >= CABAL_VERSION_ENCODE(major,minor,micro)) + +-- now, this is bad, but Cabal doesn't seem to actually pass any information about +-- its version to CPP, so guess the version depending on the version of GHC +#ifdef CABAL_VERSION_MINOR +#ifndef CABAL_VERSION_MAJOR +#define CABAL_VERSION_MAJOR 1 +#endif +#ifndef CABAL_VERSION_MICRO +#define CABAL_VERSION_MICRO 0 +#endif +#define CABAL_VERSION CABAL_VERSION_ENCODE( \ + CABAL_VERSION_MAJOR, \ + CABAL_VERSION_MINOR, \ + CABAL_VERSION_MICRO) +#else +#warning Setup.hs is guessing the version of Cabal. If compilation of Setup.hs fails use -DCABAL_VERSION_MINOR=x for Cabal version 1.x.0 when building (prefixed by --ghc-option= when using the 'cabal' command) +#if (__GLASGOW_HASKELL__ >= 612) +#define CABAL_VERSION CABAL_VERSION_ENCODE(1,8,0) +#else +#define CABAL_VERSION CABAL_VERSION_ENCODE(1,6,0) +#endif +#endif + +-- | Build a Gtk2hs package. +-- +module Gtk2HsSetup ( gtk2hsUserHooks, getPkgConfigPackages ) where + +import Distribution.Simple +import Distribution.Simple.PreProcess +import Distribution.InstalledPackageInfo ( importDirs, + showInstalledPackageInfo, + libraryDirs, + extraLibraries, + extraGHCiLibraries ) +import Distribution.Simple.PackageIndex ( +#if CABAL_VERSION_CHECK(1,8,0) + lookupInstalledPackageId +#else + lookupPackageId +#endif + ) +import Distribution.PackageDescription as PD ( PackageDescription(..), + updatePackageDescription, + BuildInfo(..), + emptyBuildInfo, allBuildInfo, + Library(..), + libModules, hasLibs) +import Distribution.Simple.LocalBuildInfo (LocalBuildInfo(..), + InstallDirs(..), +#if CABAL_VERSION_CHECK(1,8,0) + componentPackageDeps, +#else + packageDeps, +#endif + absoluteInstallDirs) +import Distribution.Simple.Compiler ( Compiler(..) ) +import Distribution.Simple.Program ( + Program(..), ConfiguredProgram(..), + rawSystemProgramConf, rawSystemProgramStdoutConf, + c2hsProgram, pkgConfigProgram, requireProgram, ghcPkgProgram, + simpleProgram, lookupProgram, rawSystemProgramStdout, ProgArg) +import Distribution.ModuleName ( ModuleName, components, toFilePath ) +import Distribution.Simple.Utils +import Distribution.Simple.Setup (CopyFlags(..), InstallFlags(..), CopyDest(..), + defaultCopyFlags, ConfigFlags(configVerbosity), + fromFlag, toFlag, RegisterFlags(..), flagToMaybe, + fromFlagOrDefault, defaultRegisterFlags) +import Distribution.Simple.BuildPaths ( autogenModulesDir ) +import Distribution.Simple.Install ( install ) +#if CABAL_VERSION_CHECK(1,8,0) +import Distribution.Simple.Register ( generateRegistrationInfo, registerPackage ) +#else +import qualified Distribution.Simple.Register as Register ( register ) +#endif +import Distribution.Text ( simpleParse, display ) +import System.FilePath +import System.Directory ( doesFileExist ) +import Distribution.Version (Version(..)) +import Distribution.Verbosity +import Control.Monad (when, unless, filterM) +import Data.Maybe ( isJust, isNothing, fromMaybe, maybeToList ) +import Data.List (isPrefixOf, isSuffixOf, nub) +import Data.Char (isAlpha) +import qualified Data.Map as M +import qualified Data.Set as S + +import Control.Applicative ((<$>)) +import System.Directory (getDirectoryContents, doesDirectoryExist) + +-- the name of the c2hs pre-compiled header file +precompFile = "precompchs.bin" + +gtk2hsUserHooks = simpleUserHooks { + hookedPrograms = [typeGenProgram, signalGenProgram, c2hsLocal], + hookedPreProcessors = [("chs", ourC2hs)], + confHook = \pd cf -> + confHook simpleUserHooks pd cf >>= return . adjustLocalBuildInfo, + postConf = \args cf pd lbi -> do + genSynthezisedFiles (fromFlag (configVerbosity cf)) pd lbi + postConf simpleUserHooks args cf pd lbi, + buildHook = \pd lbi uh bf -> fixDeps pd >>= \pd -> + (buildHook simpleUserHooks) pd lbi uh bf, + copyHook = \pd lbi uh flags -> (copyHook simpleUserHooks) pd lbi uh flags >> + installCHI pd lbi (fromFlag (copyVerbosity flags)) (fromFlag (copyDest flags)), + instHook = \pd lbi uh flags -> +#if defined(mingw32_HOST_OS) || defined(__MINGW32__) + installHook pd lbi uh flags >> + installCHI pd lbi (fromFlag (installVerbosity flags)) NoCopyDest, + regHook = registerHook +#else + instHook simpleUserHooks pd lbi uh flags >> + installCHI pd lbi (fromFlag (installVerbosity flags)) NoCopyDest +#endif + } + +------------------------------------------------------------------------------ +-- Lots of stuff for windows ghci support +------------------------------------------------------------------------------ + +getDlls :: [FilePath] -> IO [FilePath] +getDlls dirs = filter ((== ".dll") . takeExtension) . concat <$> + mapM getDirectoryContents dirs + +fixLibs :: [FilePath] -> [String] -> [String] +fixLibs dlls = concatMap $ \ lib -> + case filter (("lib" ++ lib) `isPrefixOf`) dlls of + dll:_ -> [dropExtension dll] + _ -> if lib == "z" then [] else [lib] + +-- The following code is a big copy-and-paste job from the sources of +-- Cabal 1.8 just to be able to fix a field in the package file. Yuck. + +#if CABAL_VERSION_CHECK(1,8,0) + +installHook :: PackageDescription -> LocalBuildInfo + -> UserHooks -> InstallFlags -> IO () +installHook pkg_descr localbuildinfo _ flags = do + let copyFlags = defaultCopyFlags { + copyDistPref = installDistPref flags, + copyDest = toFlag NoCopyDest, + copyVerbosity = installVerbosity flags + } + install pkg_descr localbuildinfo copyFlags + let registerFlags = defaultRegisterFlags { + regDistPref = installDistPref flags, + regInPlace = installInPlace flags, + regPackageDB = installPackageDB flags, + regVerbosity = installVerbosity flags + } + when (hasLibs pkg_descr) $ register pkg_descr localbuildinfo registerFlags + +registerHook :: PackageDescription -> LocalBuildInfo + -> UserHooks -> RegisterFlags -> IO () +registerHook pkg_descr localbuildinfo _ flags = + if hasLibs pkg_descr + then register pkg_descr localbuildinfo flags + else setupMessage verbosity + "Package contains no library to register:" (packageId pkg_descr) + where verbosity = fromFlag (regVerbosity flags) + +register :: PackageDescription -> LocalBuildInfo + -> RegisterFlags -- ^Install in the user's database?; verbose + -> IO () +register pkg@PackageDescription { library = Just lib } + lbi@LocalBuildInfo { libraryConfig = Just clbi } regFlags + = do + + installedPkgInfoRaw <- generateRegistrationInfo + verbosity pkg lib lbi clbi inplace distPref + + dllsInScope <- getSearchPath >>= (filterM doesDirectoryExist) >>= getDlls + let libs = fixLibs dllsInScope (extraLibraries installedPkgInfoRaw) + installedPkgInfo = installedPkgInfoRaw { + extraGHCiLibraries = libs } + + -- Three different modes: + case () of + _ | modeGenerateRegFile -> die "Generate Reg File not supported" + | modeGenerateRegScript -> die "Generate Reg Script not supported" + | otherwise -> registerPackage verbosity + installedPkgInfo pkg lbi inplace packageDb + + where + modeGenerateRegFile = isJust (flagToMaybe (regGenPkgConf regFlags)) + modeGenerateRegScript = fromFlag (regGenScript regFlags) + inplace = fromFlag (regInPlace regFlags) + packageDb = case flagToMaybe (regPackageDB regFlags) of + Just db -> db + Nothing -> registrationPackageDB (withPackageDB lbi) + distPref = fromFlag (regDistPref regFlags) + verbosity = fromFlag (regVerbosity regFlags) + +register _ _ regFlags = notice verbosity "No package to register" + where + verbosity = fromFlag (regVerbosity regFlags) + +#else +installHook :: PackageDescription -> LocalBuildInfo + -> UserHooks -> InstallFlags -> IO () +installHook pkg_descr localbuildinfo _ flags = do + let copyFlags = defaultCopyFlags { + copyDistPref = installDistPref flags, + copyInPlace = installInPlace flags, + copyUseWrapper = installUseWrapper flags, + copyDest = toFlag NoCopyDest, + copyVerbosity = installVerbosity flags + } + install pkg_descr localbuildinfo copyFlags + let registerFlags = defaultRegisterFlags { + regDistPref = installDistPref flags, + regInPlace = installInPlace flags, + regPackageDB = installPackageDB flags, + regVerbosity = installVerbosity flags + } + when (hasLibs pkg_descr) $ register pkg_descr localbuildinfo registerFlags + +registerHook :: PackageDescription -> LocalBuildInfo + -> UserHooks -> RegisterFlags -> IO () +registerHook pkg_descr localbuildinfo _ flags = + if hasLibs pkg_descr + then register pkg_descr localbuildinfo flags + else setupMessage verbosity + "Package contains no library to register:" (packageId pkg_descr) + where verbosity = fromFlag (regVerbosity flags) + +register :: PackageDescription -> LocalBuildInfo + -> RegisterFlags -- ^Install in the user's database?; verbose + -> IO () +register pkg_descr lbi regFlags = do + let verbosity = fromFlag (regVerbosity regFlags) + warn verbosity "Cannot register ghci libraries with Cabal 1.6 (need 1.8)." + Register.register pkg_descr lbi regFlags + +#endif + +------------------------------------------------------------------------------ +-- This is a hack for Cabal-1.8, It is not needed in Cabal-1.9.1 or later +------------------------------------------------------------------------------ + +adjustLocalBuildInfo :: LocalBuildInfo -> LocalBuildInfo +adjustLocalBuildInfo lbi = + let extra = (Just libBi, []) + libBi = emptyBuildInfo { includeDirs = [ autogenModulesDir lbi + , buildDir lbi ] } + in lbi { localPkgDescr = updatePackageDescription extra (localPkgDescr lbi) } + +------------------------------------------------------------------------------ +-- Processing .chs files with our local c2hs. +------------------------------------------------------------------------------ + +ourC2hs :: BuildInfo -> LocalBuildInfo -> PreProcessor +ourC2hs bi lbi = PreProcessor { + platformIndependent = False, + runPreProcessor = runC2HS bi lbi +} + +runC2HS :: BuildInfo -> LocalBuildInfo -> + (FilePath, FilePath) -> (FilePath, FilePath) -> Verbosity -> IO () +runC2HS bi lbi (inDir, inFile) (outDir, outFile) verbosity = do + -- have the header file name if we don't have the precompiled header yet + header <- case lookup "x-c2hs-header" (customFieldsBI bi) of + Just h -> return h + Nothing -> die ("Need x-c2hs-Header definition in the .cabal Library section "++ + "that sets the C header file to process .chs.pp files.") + + -- c2hs will output files in out dir, removing any leading path of the input file. + -- Thus, append the dir of the input file to the output dir. + let (outFileDir, newOutFile) = splitFileName outFile + let newOutDir = outDir outFileDir + -- additional .chi files might be needed that other packages have installed; + -- we assume that these are installed in the same place as .hi files + let chiDirs = [ dir | +#if CABAL_VERSION_CHECK(1,8,0) + ipi <- maybe [] (map fst . componentPackageDeps) (libraryConfig lbi), + dir <- maybe [] importDirs (lookupInstalledPackageId (installedPkgs lbi) ipi) ] +#else + ipi <- packageDeps lbi, + dir <- maybe [] importDirs (lookupPackageId (installedPkgs lbi) ipi) ] +#endif + rawSystemProgramConf verbosity c2hsLocal (withPrograms lbi) $ + map ("--include=" ++) (outDir:chiDirs) + ++ ["--cppopts=" ++ opt | opt <- getCppOptions bi lbi] + ++ ["--output-dir=" ++ newOutDir, + "--output=" ++ newOutFile, + "--precomp=" ++ buildDir lbi precompFile, + header, inDir inFile] + +getCppOptions :: BuildInfo -> LocalBuildInfo -> [String] +getCppOptions bi lbi + = nub $ + ["-I" ++ dir | dir <- PD.includeDirs bi] + ++ [opt | opt@('-':c:_) <- (PD.cppOptions bi ++ PD.ccOptions bi), c `elem` "DIU"] + +installCHI :: PackageDescription -- ^information from the .cabal file + -> LocalBuildInfo -- ^information from the configure step + -> Verbosity -> CopyDest -- ^flags sent to copy or install + -> IO () +installCHI pkg@PD.PackageDescription { library = Just lib } lbi verbosity copydest = do + let InstallDirs { libdir = libPref } = absoluteInstallDirs pkg lbi copydest + -- cannot use the recommended 'findModuleFiles' since it fails if there exists + -- a modules that does not have a .chi file + mFiles <- mapM (findFileWithExtension' ["chi"] [buildDir lbi]) + (map toFilePath +#if CABAL_VERSION_CHECK(1,8,0) + (PD.libModules lib) +#else + (PD.libModules pkg) +#endif + ) + let files = [ f | Just f <- mFiles ] +#if CABAL_VERSION_CHECK(1,8,0) + installOrdinaryFiles verbosity libPref files +#else + copyFiles verbosity libPref files +#endif + + +installCHI _ _ _ _ = return () + +------------------------------------------------------------------------------ +-- Generating the type hierarchy and signal callback .hs files. +------------------------------------------------------------------------------ + +typeGenProgram :: Program +typeGenProgram = (simpleProgram "gtk2hsTypeGen") + +signalGenProgram :: Program +signalGenProgram = (simpleProgram "gtk2hsHookGenerator") + +c2hsLocal :: Program +c2hsLocal = (simpleProgram "gtk2hsC2hs") + +genSynthezisedFiles :: Verbosity -> PackageDescription -> LocalBuildInfo -> IO () +genSynthezisedFiles verb pd lbi = do + + cPkgs <- getPkgConfigPackages verb lbi pd + + let xList = maybe [] (customFieldsBI . libBuildInfo) (library pd) + ++customFieldsPD pd + typeOpts :: String -> [ProgArg] + typeOpts tag = concat [ map (\val -> '-':'-':drop (length tag) field++'=':val) (words content) + | (field,content) <- xList, + tag `isPrefixOf` field, + field /= (tag++"file")] + ++ [ "--tag=" ++ tag + | PackageIdentifier name (Version (major:minor:_) _) <- cPkgs + , let name' = filter isAlpha (display name) + , tag <- name' + : [ name' ++ "-" ++ show major ++ "." ++ show digit + | digit <- [0,2..minor] ] + ] + + signalsOpts :: [ProgArg] + signalsOpts = concat [ map (\val -> '-':'-':drop 10 field++'=':val) (words content) + | (field,content) <- xList, + "x-signals-" `isPrefixOf` field, + field /= "x-signals-file"] + + genFile :: Program -> [ProgArg] -> FilePath -> IO () + genFile prog args outFile = do + res <- rawSystemProgramStdoutConf verb prog (withPrograms lbi) args + rewriteFile outFile res + + (flip mapM_) (filter (\(tag,_) -> "x-types-" `isPrefixOf` tag && "file" `isSuffixOf` tag) xList) $ + \(fileTag, f) -> do + let tag = reverse (drop 4 (reverse fileTag)) + info verb ("Ensuring that class hierarchy in "++f++" is up-to-date.") + genFile typeGenProgram (typeOpts tag) f + + case lookup "x-signals-file" xList of + Nothing -> return () + Just f -> do + info verb ("Ensuring that callback hooks in "++f++" are up-to-date.") + genFile signalGenProgram signalsOpts f + +--FIXME: Cabal should tell us the selected pkg-config package versions in the +-- LocalBuildInfo or equivalent. +-- In the mean time, ask pkg-config again. + +getPkgConfigPackages :: Verbosity -> LocalBuildInfo -> PackageDescription -> IO [PackageId] +getPkgConfigPackages verbosity lbi pkg = + sequence + [ do version <- pkgconfig ["--modversion", display pkgname] + case simpleParse version of + Nothing -> die $ "parsing output of pkg-config --modversion failed" + Just v -> return (PackageIdentifier pkgname v) + | Dependency pkgname _ <- concatMap pkgconfigDepends (allBuildInfo pkg) ] + where + pkgconfig = rawSystemProgramStdoutConf verbosity + pkgConfigProgram (withPrograms lbi) + +------------------------------------------------------------------------------ +-- Dependency calculation amongst .chs files. +------------------------------------------------------------------------------ + +-- Given all files of the package, find those that end in .chs and extract the +-- .chs files they depend upon. Then return the PackageDescription with these +-- files rearranged so that they are built in a sequence that files that are +-- needed by other files are built first. +fixDeps :: PackageDescription -> IO PackageDescription +fixDeps pd@PD.PackageDescription { + PD.library = Just lib@PD.Library { + PD.exposedModules = expMods, + PD.libBuildInfo = bi@PD.BuildInfo { + PD.hsSourceDirs = srcDirs, + PD.otherModules = othMods + }}} = do + let findModule m = findFileWithExtension [".chs.pp",".chs"] srcDirs + (joinPath (components m)) + mExpFiles <- mapM findModule expMods + mOthFiles <- mapM findModule othMods + + -- tag all exposed files with True so we throw an error if we need to build + -- an exposed module before an internal modules (we cannot express this) + let modDeps = zipWith (ModDep True []) expMods mExpFiles++ + zipWith (ModDep False []) othMods mOthFiles + modDeps <- mapM extractDeps modDeps + let (expMods, othMods) = span mdExposed $ sortTopological modDeps + badOther = map (fromMaybe "" . mdLocation) $ + filter (not . mdExposed) expMods + unless (null badOther) $ + die ("internal chs modules "++intercalate "," badOther++ + " depend on exposed chs modules; cabal needs to build internal modules first") + return pd { PD.library = Just lib { + PD.exposedModules = map mdOriginal expMods, + PD.libBuildInfo = bi { PD.otherModules = map mdOriginal othMods } + }} + +data ModDep = ModDep { + mdExposed :: Bool, + mdRequires :: [ModuleName], + mdOriginal :: ModuleName, + mdLocation :: Maybe FilePath +} + +instance Show ModDep where + show x = show (mdLocation x) + +instance Eq ModDep where + ModDep { mdOriginal = m1 } == ModDep { mdOriginal = m2 } = m1==m2 +instance Ord ModDep where + compare ModDep { mdOriginal = m1 } ModDep { mdOriginal = m2 } = compare m1 m2 + +-- Extract the dependencies of this file. This is intentionally rather naive as it +-- ignores CPP conditionals. We just require everything which means that the +-- existance of a .chs module may not depend on some CPP condition. +extractDeps :: ModDep -> IO ModDep +extractDeps md@ModDep { mdLocation = Nothing } = return md +extractDeps md@ModDep { mdLocation = Just f } = withFileContents f $ \con -> do + let findImports acc (('{':'#':xs):xxs) = case (dropWhile ((==) ' ') xs) of + ('i':'m':'p':'o':'r':'t':' ':ys) -> + case simpleParse (takeWhile ((/=) '#') ys) of + Just m -> findImports (m:acc) xxs + Nothing -> die ("cannot parse chs import in "++f++":\n"++ + "offending line is {#"++xs) + -- no more imports after the first non-import hook + _ -> return acc + findImports acc (_:xxs) = findImports acc xxs + findImports acc [] = return acc + mods <- findImports [] (lines con) + return md { mdRequires = mods } + +-- Find a total order of the set of modules that are partially sorted by their +-- dependencies on each other. The function returns the sorted list of modules +-- together with a list of modules that are required but not supplied by this +-- in the input set of modules. +sortTopological :: [ModDep] -> [ModDep] +sortTopological ms = reverse $ fst $ foldl visit ([], S.empty) (map mdOriginal ms) + where + set = M.fromList (map (\m -> (mdOriginal m, m)) ms) + visit (out,visited) m + | m `S.member` visited = (out,visited) + | otherwise = case m `M.lookup` set of + Nothing -> (out, m `S.insert` visited) + Just md -> (md:out', visited') + where + (out',visited') = foldl visit (out, m `S.insert` visited) (mdRequires md) diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,7 @@ +-- Setup file for a Gtk2Hs module. Contains only adjustments specific to this module, +-- all Gtk2Hs-specific boilerplate is stored in Gtk2HsSetup.hs which should be kept +-- identical across all modules. +import Gtk2HsSetup ( gtk2hsUserHooks ) +import Distribution.Simple ( defaultMainWithHooks ) + +main = defaultMainWithHooks gtk2hsUserHooks diff --git a/svgcairo.cabal b/svgcairo.cabal new file mode 100644 --- /dev/null +++ b/svgcairo.cabal @@ -0,0 +1,44 @@ +Name: svgcairo +Version: 0.11.0 +License: GPL +License-file: COPYING +Copyright: (c) 2001-2010 The Gtk2Hs Team +Author: Duncan Coutts +Maintainer: gtk2hs-users@sourceforge.net +Build-Type: Custom +Cabal-Version: >= 1.6.0 +Stability: provisional +homepage: http://www.haskell.org/gtk2hs/ +bug-reports: http://hackage.haskell.org/trac/gtk2hs/ +Synopsis: Binding to the GTK+ OpenGL Extension +Description: Svgcairo provides the GDK objects to support OpenGL rendering in GTK+, + and GtkWidget API add-ons to make GTK+ widgets OpenGL-capable. + +Category: Graphics +Tested-With: GHC == 6.12.1 +x-Types-Forward: *Graphics.UI.GtkInternals +x-Types-Destructor: objectUnrefFromMainloop +Extra-Source-Files: svgcairo.h + Gtk2HsSetup.hs + +Source-Repository head + type: darcs + location: http://code.haskell.org/gtk2hs/ + subdir: svgcairo + +Library + build-depends: base >= 4 && < 5, array, containers, haskell98, mtl, + glib >= 0.11 && < 0.12, + pango >= 0.11 && < 0.12, + cairo >= 0.11 && < 0.12, + gtk >= 0.11 && < 0.12 + + build-tools: gtk2hsC2hs, gtk2hsHookGenerator, gtk2hsTypeGen + + exposed-modules: + Graphics.Rendering.Cairo.SVG + + extensions: ForeignFunctionInterface + + x-c2hs-Header: svgcairo.h + pkgconfig-depends: librsvg-2.0 >= 2.16.0, cairo-svg >= 1.6.0 diff --git a/svgcairo.h b/svgcairo.h new file mode 100644 --- /dev/null +++ b/svgcairo.h @@ -0,0 +1,3 @@ +#include +#include +#include