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See the GNU +-- Lesser General Public License for more details. +-- +-- | +-- Maintainer : gtk2hs-users\@lists.sourceforge.net +-- Stability : stable +-- Portability : portable (depends on GHC) +-- +module Graphics.UI.Gtk.Gdk.SerializedEvent ( +-- * Types + SerializedEvent (..), + +-- * Methods + serializedEvent, + deserializeEvent, +) where + +import Control.Monad (liftM) +import Control.Monad.Reader (ask, runReaderT ) +import Control.Monad.Trans (liftIO) +import Data.Function +import Data.Maybe +import Data.Ord +import Graphics.UI.Gtk.Gdk.DrawWindow +import Graphics.UI.Gtk.Gdk.EventM +import Graphics.UI.Gtk.Gdk.Keys (KeyVal) +import Graphics.UI.GtkInternals +import System.Glib.FFI +import System.Glib.Flags + +data SerializedEvent = + SerializedEventKey + {sEventType :: Int + ,sEventSent :: Bool + ,sEventState :: Int + ,sEventKeyval :: KeyVal + ,sEventLength :: Int + ,sEventString :: String + ,sEventKeycode :: Word16 + ,sEventGroup :: Word8} + | SerializedEventButton + {sEventType :: Int + ,sEventSent :: Bool + ,sEventX :: Double + ,sEventY :: Double + ,sEventState :: Int + ,sEventButton :: Int + ,sEventXRoot :: Double + ,sEventYRoot :: Double} + deriving (Show, Read, Eq, Ord) + +serializedEvent :: EventM t SerializedEvent +serializedEvent = do + ptr <- ask + liftIO $ do + (eType :: #gtk2hs_type GdkEventType) <- #{peek GdkEventAny,type} ptr + (case eType of + #{const GDK_KEY_PRESS} -> peekEventKey + #{const GDK_KEY_RELEASE} -> peekEventKey + #{const GDK_BUTTON_PRESS} -> peekEventButton + #{const GDK_2BUTTON_PRESS} -> peekEventButton + #{const GDK_3BUTTON_PRESS} -> peekEventButton + #{const GDK_BUTTON_RELEASE} -> peekEventButton + ty -> error ("serializedEvent: haven't support event type " ++ show ty)) ptr + +deserializeEvent :: SerializedEvent -> DrawWindow -> (EventM t a) -> IO a +deserializeEvent event drawWindow fun = do + let execFun = + case fromIntegral $ sEventType event of + #{const GDK_KEY_PRESS} -> withEventKey + #{const GDK_KEY_RELEASE} -> withEventKey + #{const GDK_BUTTON_PRESS} -> withEventButton + #{const GDK_2BUTTON_PRESS} -> withEventButton + #{const GDK_3BUTTON_PRESS} -> withEventButton + #{const GDK_BUTTON_RELEASE} -> withEventButton + ty -> error ("deserializeEvent: haven't support event type " ++ show ty) + execFun drawWindow event $ runReaderT fun + +peekEventKey ptr = do + (typ_ :: #gtk2hs_type GdkEventType) <- #{peek GdkEventKey, type} ptr + (sent_ :: #gtk2hs_type gint8) <- #{peek GdkEventKey, send_event} ptr + (state_ :: #gtk2hs_type guint) <- #{peek GdkEventKey, state} ptr + (keyval_ :: #gtk2hs_type guint) <- #{peek GdkEventKey, keyval} ptr + (length_ :: #gtk2hs_type gint) <- #{peek GdkEventKey, length} ptr + (string_ :: CString) <- #{peek GdkEventKey, string} ptr + (keycode_ :: #gtk2hs_type guint16) <- #{peek GdkEventKey, hardware_keycode} ptr + (group_ :: #gtk2hs_type guint8) <- #{peek GdkEventKey, group} ptr + return $ SerializedEventKey + {sEventType = fromIntegral typ_ + ,sEventSent = toBool sent_ + ,sEventState = fromIntegral state_ + ,sEventKeyval = keyval_ + ,sEventLength = fromIntegral length_ + ,sEventString = unsafePerformIO $ peekCString' string_ + ,sEventKeycode = keycode_ + ,sEventGroup = group_ + } + where + peekCString' :: CString -> IO String + peekCString' strPtr | strPtr == nullPtr + = return "" + | otherwise + = peekCString strPtr + +peekEventButton ptr = do + (typ_ :: #gtk2hs_type GdkEventType) <- #{peek GdkEventButton, type} ptr + (sent_ :: #gtk2hs_type gint8) <- #{peek GdkEventButton, send_event} ptr + (x_ :: #gtk2hs_type gdouble) <- #{peek GdkEventButton, x} ptr + (y_ :: #gtk2hs_type gdouble) <- #{peek GdkEventButton, y} ptr + (state_ :: #gtk2hs_type guint) <- #{peek GdkEventButton, state} ptr + (button_ :: #gtk2hs_type guint) <- #{peek GdkEventButton, button} ptr + (xRoot_ :: #gtk2hs_type gdouble) <- #{peek GdkEventButton, x_root} ptr + (yRoot_ :: #gtk2hs_type gdouble) <- #{peek GdkEventButton, y_root} ptr + return $ SerializedEventButton + {sEventType = fromIntegral typ_ + ,sEventSent = toBool sent_ + ,sEventX = realToFrac x_ + ,sEventY = realToFrac y_ + ,sEventState = fromIntegral state_ + ,sEventButton = fromIntegral button_ + ,sEventXRoot = realToFrac xRoot_ + ,sEventYRoot = realToFrac yRoot_ + } + +withEventKey window_ (SerializedEventKey + {sEventType = typ_ + ,sEventSent = sent_ + ,sEventState = state_ + ,sEventKeyval = keyval_ + ,sEventLength = length_ + ,sEventString = string_ + ,sEventKeycode = keycode_ + ,sEventGroup = group_ + }) act = + withCString string_ $ \str -> + allocaBytes #{const sizeof (GdkEventKey)} $ \ptr -> do + #{poke GdkEventKey, type} ptr ((fromIntegral typ_) :: #gtk2hs_type GdkEventType) + withForeignPtr (unDrawWindow window_) $ \winPtr -> + #{poke GdkEventKey, window} ptr winPtr + #{poke GdkEventKey, send_event} ptr ((fromBool sent_) :: #gtk2hs_type gint8) + #{poke GdkEventKey, time} ptr ((fromIntegral currentTime) :: #gtk2hs_type guint32) + #{poke GdkEventKey, state} ptr ((fromIntegral state_) :: #gtk2hs_type guint) + #{poke GdkEventKey, keyval} ptr (keyval_ :: #gtk2hs_type guint) + #{poke GdkEventKey, length} ptr ((fromIntegral length_) :: #gtk2hs_type gint) + #{poke GdkEventKey, string} ptr str + #{poke GdkEventKey, hardware_keycode} ptr (keycode_ :: #gtk2hs_type guint16) + #{poke GdkEventKey, group} ptr (group_ :: #gtk2hs_type guint8) + act ptr + +withEventButton window_ (SerializedEventButton + {sEventType = typ_ + ,sEventSent = sent_ + ,sEventX = x_ + ,sEventY = y_ + ,sEventState = state_ + ,sEventButton = button_ + ,sEventXRoot = xRoot_ + ,sEventYRoot = yRoot_ + }) act = + allocaBytes #{const sizeof (GdkEventButton)} $ \ptr -> do + #{poke GdkEventButton, type} ptr ((fromIntegral typ_) :: #gtk2hs_type GdkEventType) + withForeignPtr (unDrawWindow window_) $ \winPtr -> + #{poke GdkEventButton, window} ptr winPtr + #{poke GdkEventButton, send_event} ptr ((fromBool sent_) :: #gtk2hs_type gint8) + #{poke GdkEventButton, time} ptr ((fromIntegral currentTime) :: #gtk2hs_type guint32) + #{poke GdkEventButton, x} ptr ((realToFrac x_) :: #gtk2hs_type gdouble) + #{poke GdkEventButton, y} ptr ((realToFrac y_) :: #gtk2hs_type gdouble) + #{poke GdkEventButton, state} ptr ((fromIntegral state_) :: #gtk2hs_type guint) + #{poke GdkEventButton, button} ptr ((fromIntegral button_) :: #gtk2hs_type guint) + #{poke GdkEventButton, x_root} ptr ((realToFrac xRoot_) :: #gtk2hs_type gdouble) + #{poke GdkEventButton, y_root} ptr ((realToFrac yRoot_) :: #gtk2hs_type gdouble) + act ptr diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,3 @@ +import Distribution.Simple + +main = defaultMain diff --git a/demo/Main.hs b/demo/Main.hs new file mode 100644 --- /dev/null +++ b/demo/Main.hs @@ -0,0 +1,170 @@ +{-# LANGUAGE OverloadedStrings, FlexibleInstances #-} +module Main where + +import Control.Concurrent +import Control.Monad +import Control.Monad.Trans +import DBus.Bus +import DBus.Client hiding (Signal) +import DBus.MatchRule +import DBus.Message hiding (Signal) +import DBus.Types +import Data.Function +import Data.List (sort) +import Data.Ord +import Data.Text.Lazy hiding (head) +import Data.Word +import Graphics.UI.Gtk hiding (Signal, on) +import Graphics.UI.Gtk.Gdk.DrawWindow +import Graphics.UI.Gtk.Gdk.EventM +import Graphics.UI.Gtk.Gdk.SerializedEvent +import Graphics.UI.Gtk.WebKit.WebView +import System.Directory +import System.Environment +import System.FilePath (()) +import System.Process + +import qualified Data.Map as Map +import qualified DBus.Message as DM +import qualified Graphics.UI.Gtk as Gtk + +main :: IO () +main = do + -- Init. + unsafeInitGUIForThreadedRTS + + -- Get program arguments. + args <- getArgs + + case args of + -- Entry daemon main. + [] -> daemonMain + -- Entry plug main. + _ -> renderMain + +daemonMain :: IO () +daemonMain = do + -- Create top-level window. + window <- windowNew + windowSetPosition window WinPosCenter + windowSetDefaultSize window 800 600 + window `onDestroy` mainQuit + + -- Create daemon client. + client <- mkClient =<< getSessionBus + requestName client "org.manatee.server" [] + + -- Build dbus match rule to listen child process create signal, + -- then use socketAddId add plug. + let matchRule = MatchRule + (Just Signal) + Nothing + (mkInterfaceName "org.manatee.interface") + (mkMemberName "signal1") + (mkObjectPath "/server") + (mkBusName "org.manatee.server") + [] + onSignal client matchRule $ \busName signal -> do + let plugId = fromVariant $ head $ signalBody signal :: Maybe NativeWindowId + case plugId of + Just pi -> postGUIAsync $ do + socket <- socketNew + widgetShow socket + window `containerAdd` socket + socketAddId socket pi + Nothing -> return () + + widgetShowAll window + + -- Send serialized event to child process. + window `Gtk.on` keyPressEvent $ tryEvent $ do + sEvent <- serializedEvent + liftIO $ do + -- Create signal. + let signal = DM.Signal + (mkObjectPath_ "/client") + (mkMemberName_ "event1") + (mkInterfaceName_ "org.manatee.clientinterface") + (mkBusName "org.manatee.client") + [toVariant sEvent] + + -- Send signal. + emitSignal client signal + + -- Startup child plug process. + path <- liftM2 () getCurrentDirectory getProgName -- get program full path + runCommand $ path ++ " hello" + + mainGUI + +renderMain :: IO () +renderMain = do + -- Create plug. + plug <- plugNew Nothing + plug `onDestroy` mainQuit + plugId <- plugGetId plug + + -- Create browser widget. + scrolledWindow <- scrolledWindowNew Nothing Nothing + webView <- webViewNew + webViewLoadUri webView "http://www.google.com.hk" + scrolledWindow `containerAdd` webView + plug `containerAdd` scrolledWindow + + widgetShowAll plug + + -- Create render client. + client <- mkClient =<< getSessionBus + requestName client "org.manatee.client" [] + + -- Build dbus match rule to listen daemon process event. + let matchRule = MatchRule + (Just Signal) + Nothing + (mkInterfaceName "org.manatee.clientinterface") + (mkMemberName "event1") + (mkObjectPath "/client") + (mkBusName "org.manatee.client") + [] + onSignal client matchRule $ \busName signal -> do + let sEvent = fromVariant $ head $ signalBody signal :: Maybe SerializedEvent + case sEvent of + Just event -> do + putStrLn $ "Receive event from deamon process : " ++ show sEvent + drawWindow <- widgetGetDrawWindow webView + postGUIAsync $ deserializeEvent event drawWindow (widgetEvent webView) >> return () + Nothing -> return () + + -- Send plug id to deamon process. + let signal = DM.Signal + (mkObjectPath_ "/server") + (mkMemberName_ "signal1") + (mkInterfaceName_ "org.manatee.interface") + (mkBusName "org.manatee.server") + [toVariant plugId] + -- Send signal. + emitSignal client signal + + mainGUI + +instance Num NativeWindowId where + (+) = (+) `on` fromIntegral . fromNativeWindowId + (*) = (*) `on` fromIntegral . fromNativeWindowId + abs = abs . fromIntegral . fromNativeWindowId + signum = signum . fromIntegral . fromNativeWindowId + fromInteger = toNativeWindowId + +instance Ord NativeWindowId where + compare = comparing (fromIntegral . fromNativeWindowId) + +instance Variable NativeWindowId where + toVariant = toVariant . show . fromNativeWindowId + fromVariant x = case fromVariant x of + Just v -> Just $ toNativeWindowId $ read v + Nothing -> Nothing + +instance Variable SerializedEvent where + toVariant = toVariant . show + fromVariant x = case fromVariant x of + Just v -> Just (read v :: SerializedEvent) + Nothing -> Nothing diff --git a/demo/Makefile b/demo/Makefile new file mode 100644 --- /dev/null +++ b/demo/Makefile @@ -0,0 +1,13 @@ + +PROGS = main +SOURCES = Main.hs + +all : $(PROGS) + +main : Main.hs + $(HC) --make -threaded $< -o $@ $(HCFLAGS) + +clean: + rm -f $(SOURCES:.hs=.hi) $(SOURCES:.hs=.o) $(PROGS) + +HC=ghc diff --git a/gtk-serialized-event.cabal b/gtk-serialized-event.cabal new file mode 100644 --- /dev/null +++ b/gtk-serialized-event.cabal @@ -0,0 +1,44 @@ +Name: gtk-serialized-event +Version: 0.11.0 +License: LGPL-2.1 +License-file: COPYING +Copyright: (c) 2001-2010 The Gtk2Hs Team +Author: Andy Stewart +Maintainer: gtk2hs-users@sourceforge.net +Build-Type: Custom +Cabal-Version: >= 1.6 +Stability: stable +homepage: http://www.haskell.org/gtk2hs/ +bug-reports: http://hackage.haskell.org/trac/gtk2hs/ +Synopsis: GTK+ Serialized event. +Description: For communicate GTK+ event in multi-processes GTK+ program, + we can use "serializeEvent" serialized event at *server* process, + then pass serialized event over the network, when *client* process receive + serialized event from the network, we can use "deserializeEvent serializedEvent mainDoEvent" + re-emit same event at *client* side. +Category: Graphics +Tested-With: GHC == 6.12.3 +Extra-Source-Files: template-hsc-gtk2hs.h + +Data-Dir: demo +Data-Files: Main.hs + Makefile + +Source-Repository head + type: darcs + location: http://patch-tag.com/r/AndyStewart/gtk-serialized-event + +Library + build-depends: base >= 4 && < 5, array, containers, haskell98, mtl, + glib >= 0.11 && < 0.12, + gtk >= 0.11 && < 0.12 + + exposed-modules: + Graphics.UI.Gtk.Gdk.SerializedEvent + other-modules: + + extensions: ForeignFunctionInterface + + include-dirs: . + x-c2hs-Header: gdk/gdk.h + pkgconfig-depends: gdk-2.0 diff --git a/template-hsc-gtk2hs.h b/template-hsc-gtk2hs.h new file mode 100644 --- /dev/null +++ b/template-hsc-gtk2hs.h @@ -0,0 +1,17 @@ +#ifndef _TEMPLATE_HSC_GTK2HS_H_ +#define _TEMPLATE_HSC_GTK2HS_H_ + +#include + +#define hsc_gtk2hs_type(t) \ + if ((t)(int)(t)1.4 == (t)1.4) \ + printf ("%s%" G_GSIZE_FORMAT, \ + (t)(-1) < (t)0 ? "Int" : "Word", \ + sizeof (t) * 8); \ + else \ + printf ("%s", \ + sizeof (t) > sizeof (double) ? "LDouble" : \ + sizeof (t) == sizeof (double) ? "Double" : \ + "Float"); + +#endif