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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/README.md b/README.md new file mode 100644 --- /dev/null +++ b/README.md @@ -0,0 +1,15 @@ +This package wraps the venerable eggtraymanager code, which implements +the freedesktop.org +[system tray protocol](http://standards.freedesktop.org/systemtray-spec/systemtray-spec-0.2.html). +The code seems to have originated somewhere in the GNOME project a +long time ago; I took it from +[trayer-srg](https://github.com/sargon/trayer-srg/). The only change +I made was to cast a few `long` variables in parameters to `uint64_t` +to make interoperability with Haskell easier. + +By itself, this code is not a system tray widget. It is, however, an +integral part of one. This package exports a simple GObject (for use +with gtk2hs) that emits events when system tray events occur. A +system tray widget would listen for these events and respond. See the +haddock documentation for details. + diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,2 @@ +import Distribution.Simple +main = defaultMain diff --git a/gtk-traymanager.cabal b/gtk-traymanager.cabal new file mode 100644 --- /dev/null +++ b/gtk-traymanager.cabal @@ -0,0 +1,33 @@ +name: gtk-traymanager +version: 0.1.0 +synopsis: A wrapper around the eggtraymanager library for Linux system trays +license: LGPL-2.1 +license-file: LICENSE +author: Tristan Ravitch +maintainer: travitch@cs.wisc.edu +category: Graphics +build-type: Simple +cabal-version: >=1.10 +extra-source-files: README.md +stability: experimental +homepage: http://github.com/travitch/gtk-traymanager +description: This package provides a wrapper around the prolific eggtraymanager code. + Note that it is *NOT* itself a system tray widget, though it is a very + convenient utility for implementing one. This package adopts the style + of gtk2hs and is designed to work well with it. + + +library + default-language: Haskell2010 + exposed-modules: Graphics.UI.Gtk.Misc.TrayManager + build-depends: gtk >= 0.12 && < 0.13, glib >= 0.12 && < 0.13, base > 3 && < 5 + pkgconfig-depends: gtk+-2.0, x11 + hs-source-dirs: src + c-sources: src/c/eggtraymanager.c, src/c/eggmarshalers.c, src/c/gdk-helper.c + ghc-options: -Wall + cc-options: -g + ghc-prof-options: -auto-all + +source-repository head + type: git + location: git://github.com/travitch/gtk-traymanager.git diff --git a/src/Graphics/UI/Gtk/Misc/TrayManager.hs b/src/Graphics/UI/Gtk/Misc/TrayManager.hs new file mode 100644 --- /dev/null +++ b/src/Graphics/UI/Gtk/Misc/TrayManager.hs @@ -0,0 +1,240 @@ +{-# LANGUAGE ForeignFunctionInterface, EmptyDataDecls #-} +-- | This module implements a TrayManager - an integral part of a +-- Linux system tray widget, though it is not itself a widget. This +-- package exports a single GObject (for use with gtk2hs) that +-- implements the freedesktop.org system tray specification (it +-- handles receiving events and translating them into convenient +-- signals, along with the messy work of dealing with XEMBED). +-- +-- The basic usage of the object is to: +-- +-- 1. Instantiate the object with 'trayManagerNew' +-- +-- 2. Have it manage a specific screen with 'trayManagerManageScreen' +-- +-- 3. Set up handlers for the events exposed by the tray (e.g., 'trayIconAdded'). +-- +-- As an example, a functional system tray widget looks something like: +-- +-- > import Graphics.UI.Gtk +-- > import Graphics.UI.Gtk.Misc.TrayManager +-- > systrayNew = do +-- > box <- hBoxNew False 5 +-- > trayManager <- rayManagerNew +-- > Just screen <- screenGetDefault +-- > trayManagerManageScreen trayManager screen +-- > on trayManager trayIconAdded $ \w -> do +-- > widgetShowAll w +-- > boxPackStart box w PackNatural 0 +-- +-- Note that the widgets made available in the event handlers are not +-- shown by default; you need to explicitly show them if you want that +-- (and you probably do). +module Graphics.UI.Gtk.Misc.TrayManager ( + -- * Types + TrayManager, + TrayManagerChild, + TrayManagerClass, + castToTrayManager, + toTrayManager, + gTypeTrayManager, + + -- * Functions + trayManagerCheckRunning, + trayManagerNew, + trayManagerManageScreen, + trayManagerGetChildTitle, + + -- * Signals + trayIconAdded, + trayIconRemoved, + trayMessageSent, + trayMessageCanceled, + trayLostSelection + ) where + +import Graphics.UI.Gtk hiding ( after ) +import Graphics.UI.Gtk.Abstract.Object ( makeNewObject ) +import Graphics.UI.GtkInternals +import System.Glib.GError ( failOnGError ) +import System.Glib.GObject +import System.Glib.GType +import System.Glib.UTFString ( peekUTFString ) + +import Control.Monad ( liftM ) + +import Foreign +import Foreign.C.String ( CString, peekCString ) +import Foreign.C.Types +import Unsafe.Coerce ( unsafeCoerce ) + +newtype TrayManager = TrayManager (ForeignPtr TrayManager) + deriving (Eq, Ord) +type TrayManagerChild = Ptr EggTrayManagerChild + +-- Empty data tags to classify some foreign pointers +data EggTrayManager +data EggTrayManagerChild + +foreign import ccall "egg_tray_manager_check_running" + c_egg_tray_manager_check_running :: Ptr Screen -> IO CInt + +trayManagerCheckRunning :: Screen -> IO Bool +trayManagerCheckRunning gdkScreen = do + let ptrScreen = unsafeCoerce gdkScreen :: ForeignPtr Screen + withForeignPtr ptrScreen $ \realPtr -> do + res <- c_egg_tray_manager_check_running realPtr + return (res /= 0) + +mkTrayManager :: (ForeignPtr TrayManager -> TrayManager, FinalizerPtr a) +mkTrayManager = (TrayManager, objectUnrefFromMainloop) + +unTrayManager :: TrayManager -> ForeignPtr TrayManager +unTrayManager (TrayManager o) = o + +class GObjectClass o => TrayManagerClass o +toTrayManager :: TrayManagerClass o => o -> TrayManager +toTrayManager = unsafeCastGObject . toGObject + +instance TrayManagerClass TrayManager +instance ObjectClass TrayManager +instance GObjectClass TrayManager where + toGObject = GObject . castForeignPtr . unTrayManager + unsafeCastGObject = TrayManager . castForeignPtr . unGObject + +castToTrayManager :: GObjectClass o => o -> TrayManager +castToTrayManager = castTo gTypeTrayManager "TrayManager" + +foreign import ccall "egg_tray_manager_get_type" + c_egg_tray_manager_get_type :: CULong + +gTypeTrayManager :: GType +gTypeTrayManager = fromIntegral c_egg_tray_manager_get_type + +foreign import ccall "egg_tray_manager_new" + c_egg_tray_manager_new :: IO (Ptr EggTrayManager) + +trayManagerNew :: IO TrayManager +trayManagerNew = + makeNewObject mkTrayManager $ liftM (castPtr :: Ptr EggTrayManager -> Ptr TrayManager) $ + c_egg_tray_manager_new + -- tm <- c_egg_tray_manager_new + -- return (unsafeCoerce tm) + +foreign import ccall "egg_tray_manager_manage_screen" + c_egg_tray_manager_manage_screen :: Ptr EggTrayManager -> Ptr Screen -> IO CInt + +trayManagerManageScreen :: TrayManager -> Screen -> IO Bool +trayManagerManageScreen trayManager screen = do + let ptrManager = unsafeCoerce trayManager :: ForeignPtr EggTrayManager + ptrScreen = unsafeCoerce screen :: ForeignPtr Screen + res <- withForeignPtr ptrManager $ \realManager -> do + withForeignPtr ptrScreen $ \realScreen -> do + c_egg_tray_manager_manage_screen realManager realScreen + return (res /= 0) + +foreign import ccall "egg_tray_manager_get_child_title" + c_egg_tray_manager_get_child_title :: Ptr EggTrayManager -> Ptr EggTrayManagerChild -> IO (Ptr CChar) + + +trayManagerGetChildTitle :: TrayManager -> TrayManagerChild -> IO String +trayManagerGetChildTitle trayManager child = do + let ptrManager = unsafeCoerce trayManager :: ForeignPtr EggTrayManager + res <- withForeignPtr ptrManager $ \realManager -> do + c_egg_tray_manager_get_child_title realManager child + peekCString res + +-- | The signal emitted when a new tray icon is added. These are +-- delivered even for systray icons that already exist when the tray +-- manager is created. +trayIconAdded :: (TrayManagerClass self) => Signal self (Widget -> IO ()) +trayIconAdded = Signal (connect_OBJECT__NONE "tray_icon_added") + +-- | This signal is emitted when a tray icon is removed by its parent +-- application. No action is really necessary here (the icon is +-- removed without any intervention). You could do something here if +-- you wanted, though. +trayIconRemoved :: (TrayManagerClass self) => Signal self (Widget -> IO ()) +trayIconRemoved = Signal (connect_OBJECT__NONE "tray_icon_removed") + +-- | This signal is emitted when the application that displayed an +-- icon wants a semi-persistent notification displayed for its icon. +-- The standard doesn't seem to require that these be honored. +trayMessageSent :: (TrayManagerClass self) => Signal self (Widget -> String -> Int64 -> Int64 -> IO ()) +trayMessageSent = Signal (connect_OBJECT_STRING_INT64_INT64__NONE "message_sent") + +-- | Similarly, the applciation can send this to cancel a previous +-- persistent message. +trayMessageCanceled :: (TrayManagerClass self) => Signal self (Widget -> Int64 -> IO ()) +trayMessageCanceled = Signal (connect_OBJECT_INT64__NONE "message_canceled") + +-- | ?? +trayLostSelection :: (TrayManagerClass self) => Signal self (IO ()) +trayLostSelection = Signal (connect_NONE__NONE "lost_selection") + + +-- Boilerplate stolen from gtk to make this library compatible. These +-- functions aren't exported at all so I just copied them. + +-- stolen from gtk +castTo :: (GObjectClass obj, GObjectClass obj') => GType -> String -> (obj -> obj') +castTo gtype objTypeName obj = + case toGObject obj of + gobj@(GObject objFPtr) + | typeInstanceIsA ((unsafeForeignPtrToPtr.castForeignPtr) objFPtr) gtype + -> unsafeCastGObject gobj + | otherwise -> error $ "Cannot cast object to " ++ objTypeName + +connect_OBJECT__NONE :: + (GObjectClass a', GObjectClass obj) => SignalName -> + ConnectAfter -> obj -> + (a' -> IO ()) -> + IO (ConnectId obj) +connect_OBJECT__NONE signal after obj user = + connectGeneric signal after obj action + where action :: Ptr GObject -> Ptr GObject -> IO () + action _ obj1 = + failOnGError $ + makeNewGObject (GObject, objectUnrefFromMainloop) (return obj1) >>= \obj1' -> + user (unsafeCastGObject obj1') + +connect_NONE__NONE :: + GObjectClass obj => SignalName -> + ConnectAfter -> obj -> + (IO ()) -> + IO (ConnectId obj) +connect_NONE__NONE signal after obj user = + connectGeneric signal after obj action + where action :: Ptr GObject -> IO () + action _ = + failOnGError $ + user + +connect_OBJECT_INT64__NONE :: (GObjectClass a', GObjectClass obj) + => SignalName + -> ConnectAfter + -> obj + -> (a' -> Int64 -> IO ()) + -> IO (ConnectId obj) +connect_OBJECT_INT64__NONE signal after obj user = + connectGeneric signal after obj action + where + action :: Ptr GObject -> Ptr GObject -> Int64 -> IO () + action _ obj1 int2 = + failOnGError $ makeNewGObject (GObject, objectUnrefFromMainloop) (return obj1) >>= \obj1' -> + user (unsafeCastGObject obj1') int2 + +connect_OBJECT_STRING_INT64_INT64__NONE :: (GObjectClass a', GObjectClass obj) + => SignalName + -> ConnectAfter + -> obj + -> (a' -> String -> Int64 -> Int64 -> IO ()) + -> IO (ConnectId obj) +connect_OBJECT_STRING_INT64_INT64__NONE signal after obj user = + connectGeneric signal after obj action + where + action :: Ptr GObject -> Ptr GObject -> CString -> Int64 -> Int64 -> IO () + action _ obj1 str2 int3 int4 = + failOnGError $ makeNewGObject (GObject, objectUnrefFromMainloop) (return obj1) >>= \obj1' -> + peekUTFString str2 >>= \str2' -> + user (unsafeCastGObject obj1') str2' int3 int4 diff --git a/src/c/eggmarshalers.c b/src/c/eggmarshalers.c new file mode 100644 --- /dev/null +++ b/src/c/eggmarshalers.c @@ -0,0 +1,163 @@ +#include +#include + +#ifdef G_ENABLE_DEBUG +#define g_marshal_value_peek_boolean(v) g_value_get_boolean (v) +#define g_marshal_value_peek_char(v) g_value_get_char (v) +#define g_marshal_value_peek_uchar(v) g_value_get_uchar (v) +#define g_marshal_value_peek_int(v) g_value_get_int (v) +#define g_marshal_value_peek_uint(v) g_value_get_uint (v) +#define g_marshal_value_peek_long(v) g_value_get_long (v) +#define g_marshal_value_peek_ulong(v) g_value_get_ulong (v) +#define g_marshal_value_peek_int64(v) g_value_get_int64 (v) +#define g_marshal_value_peek_uint64(v) g_value_get_uint64 (v) +#define g_marshal_value_peek_enum(v) g_value_get_enum (v) +#define g_marshal_value_peek_flags(v) g_value_get_flags (v) +#define g_marshal_value_peek_float(v) g_value_get_float (v) +#define g_marshal_value_peek_double(v) g_value_get_double (v) +#define g_marshal_value_peek_string(v) (char*) g_value_get_string (v) +#define g_marshal_value_peek_param(v) g_value_get_param (v) +#define g_marshal_value_peek_boxed(v) g_value_get_boxed (v) +#define g_marshal_value_peek_pointer(v) g_value_get_pointer (v) +#define g_marshal_value_peek_object(v) g_value_get_object (v) +#else /* !G_ENABLE_DEBUG */ +/* WARNING: This code accesses GValues directly, which is UNSUPPORTED API. + * Do not access GValues directly in your code. Instead, use the + * g_value_get_*() functions + */ +#define g_marshal_value_peek_boolean(v) (v)->data[0].v_int +#define g_marshal_value_peek_char(v) (v)->data[0].v_int +#define g_marshal_value_peek_uchar(v) (v)->data[0].v_uint +#define g_marshal_value_peek_int(v) (v)->data[0].v_int +#define g_marshal_value_peek_uint(v) (v)->data[0].v_uint +#define g_marshal_value_peek_long(v) (v)->data[0].v_long +#define g_marshal_value_peek_ulong(v) (v)->data[0].v_ulong +#define g_marshal_value_peek_int64(v) (v)->data[0].v_int64 +#define g_marshal_value_peek_uint64(v) (v)->data[0].v_uint64 +#define g_marshal_value_peek_enum(v) (v)->data[0].v_int +#define g_marshal_value_peek_flags(v) (v)->data[0].v_uint +#define g_marshal_value_peek_float(v) (v)->data[0].v_float +#define g_marshal_value_peek_double(v) (v)->data[0].v_double +#define g_marshal_value_peek_string(v) (v)->data[0].v_pointer +#define g_marshal_value_peek_param(v) (v)->data[0].v_pointer +#define g_marshal_value_peek_boxed(v) (v)->data[0].v_pointer +#define g_marshal_value_peek_pointer(v) (v)->data[0].v_pointer +#define g_marshal_value_peek_object(v) (v)->data[0].v_pointer +#endif /* !G_ENABLE_DEBUG */ + + +/* VOID:OBJECT,OBJECT (eggmarshalers.list:1) */ +void +_egg_marshal_VOID__OBJECT_OBJECT (GClosure *closure, + GValue *return_value, + guint n_param_values, + const GValue *param_values, + gpointer invocation_hint, + gpointer marshal_data) +{ + typedef void (*GMarshalFunc_VOID__OBJECT_OBJECT) (gpointer data1, + gpointer arg_1, + gpointer arg_2, + gpointer data2); + register GMarshalFunc_VOID__OBJECT_OBJECT callback; + register GCClosure *cc = (GCClosure*) closure; + register gpointer data1, data2; + + g_return_if_fail (n_param_values == 3); + + if (G_CCLOSURE_SWAP_DATA (closure)) + { + data1 = closure->data; + data2 = g_value_peek_pointer (param_values + 0); + } + else + { + data1 = g_value_peek_pointer (param_values + 0); + data2 = closure->data; + } + callback = (GMarshalFunc_VOID__OBJECT_OBJECT) (marshal_data ? marshal_data : cc->callback); + + callback (data1, + g_marshal_value_peek_object (param_values + 1), + g_marshal_value_peek_object (param_values + 2), + data2); +} + +/* VOID:OBJECT,STRING,LONG,LONG (eggmarshalers.list:2) */ +void +_egg_marshal_VOID__OBJECT_STRING_LONG_LONG (GClosure *closure, + GValue *return_value, + guint n_param_values, + const GValue *param_values, + gpointer invocation_hint, + gpointer marshal_data) +{ + typedef void (*GMarshalFunc_VOID__OBJECT_STRING_LONG_LONG) (gpointer data1, + gpointer arg_1, + gpointer arg_2, + int64_t arg_3, + int64_t arg_4, + gpointer data2); + register GMarshalFunc_VOID__OBJECT_STRING_LONG_LONG callback; + register GCClosure *cc = (GCClosure*) closure; + register gpointer data1, data2; + + g_return_if_fail (n_param_values == 5); + + if (G_CCLOSURE_SWAP_DATA (closure)) + { + data1 = closure->data; + data2 = g_value_peek_pointer (param_values + 0); + } + else + { + data1 = g_value_peek_pointer (param_values + 0); + data2 = closure->data; + } + callback = (GMarshalFunc_VOID__OBJECT_STRING_LONG_LONG) (marshal_data ? marshal_data : cc->callback); + + callback (data1, + g_marshal_value_peek_object (param_values + 1), + g_marshal_value_peek_string (param_values + 2), + (int64_t)g_marshal_value_peek_long (param_values + 3), + (int64_t)g_marshal_value_peek_long (param_values + 4), + data2); +} + +/* VOID:OBJECT,LONG (eggmarshalers.list:3) */ +void +_egg_marshal_VOID__OBJECT_LONG (GClosure *closure, + GValue *return_value, + guint n_param_values, + const GValue *param_values, + gpointer invocation_hint, + gpointer marshal_data) +{ + typedef void (*GMarshalFunc_VOID__OBJECT_LONG) (gpointer data1, + gpointer arg_1, + int64_t arg_2, + gpointer data2); + register GMarshalFunc_VOID__OBJECT_LONG callback; + register GCClosure *cc = (GCClosure*) closure; + register gpointer data1, data2; + + g_return_if_fail (n_param_values == 3); + + if (G_CCLOSURE_SWAP_DATA (closure)) + { + data1 = closure->data; + data2 = g_value_peek_pointer (param_values + 0); + } + else + { + data1 = g_value_peek_pointer (param_values + 0); + data2 = closure->data; + } + callback = (GMarshalFunc_VOID__OBJECT_LONG) (marshal_data ? marshal_data : cc->callback); + + callback (data1, + g_marshal_value_peek_object (param_values + 1), + (int64_t)g_marshal_value_peek_long (param_values + 2), + data2); +} + diff --git a/src/c/eggtraymanager.c b/src/c/eggtraymanager.c new file mode 100644 --- /dev/null +++ b/src/c/eggtraymanager.c @@ -0,0 +1,595 @@ +/* eggtraymanager.c + * Copyright (C) 2002 Anders Carlsson + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include +#include +#include +#include +#include +#include "eggtraymanager.h" +#include "eggmarshalers.h" +#include "panel.h" +#include "gdk-helper.h" + +/* Signals */ +enum +{ + TRAY_ICON_ADDED, + TRAY_ICON_REMOVED, + MESSAGE_SENT, + MESSAGE_CANCELLED, + LOST_SELECTION, + LAST_SIGNAL +}; + +typedef struct +{ + long id, len; + long remaining_len; + + long timeout; + Window window; + char *str; +} PendingMessage; + +static GObjectClass *parent_class = NULL; +static guint manager_signals[LAST_SIGNAL] = { 0 }; + +#define SYSTEM_TRAY_REQUEST_DOCK 0 +#define SYSTEM_TRAY_BEGIN_MESSAGE 1 +#define SYSTEM_TRAY_CANCEL_MESSAGE 2 + +static gboolean egg_tray_manager_check_running_xscreen (Screen *xscreen); + +static void egg_tray_manager_init (EggTrayManager *manager); +static void egg_tray_manager_class_init (EggTrayManagerClass *klass); + +static void egg_tray_manager_finalize (GObject *object); + +static void egg_tray_manager_unmanage (EggTrayManager *manager); + +GType +egg_tray_manager_get_type (void) +{ + static GType our_type = 0; + + if (our_type == 0) + { + static const GTypeInfo our_info = + { + sizeof (EggTrayManagerClass), + (GBaseInitFunc) NULL, + (GBaseFinalizeFunc) NULL, + (GClassInitFunc) egg_tray_manager_class_init, + NULL, /* class_finalize */ + NULL, /* class_data */ + sizeof (EggTrayManager), + 0, /* n_preallocs */ + (GInstanceInitFunc) egg_tray_manager_init + }; + + our_type = g_type_register_static (G_TYPE_OBJECT, "EggTrayManager", &our_info, 0); + } + + return our_type; + +} + +static void +egg_tray_manager_init (EggTrayManager *manager) +{ + manager->socket_table = g_hash_table_new (NULL, NULL); +} + +static void +egg_tray_manager_class_init (EggTrayManagerClass *klass) +{ + GObjectClass *gobject_class; + + parent_class = g_type_class_peek_parent (klass); + gobject_class = (GObjectClass *)klass; + + gobject_class->finalize = egg_tray_manager_finalize; + + manager_signals[TRAY_ICON_ADDED] = + g_signal_new ("tray_icon_added", + G_OBJECT_CLASS_TYPE (klass), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EggTrayManagerClass, tray_icon_added), + NULL, NULL, + g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, 1, + GTK_TYPE_SOCKET); + + manager_signals[TRAY_ICON_REMOVED] = + g_signal_new ("tray_icon_removed", + G_OBJECT_CLASS_TYPE (klass), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EggTrayManagerClass, tray_icon_removed), + NULL, NULL, + g_cclosure_marshal_VOID__OBJECT, + G_TYPE_NONE, 1, + GTK_TYPE_SOCKET); + manager_signals[MESSAGE_SENT] = + g_signal_new ("message_sent", + G_OBJECT_CLASS_TYPE (klass), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EggTrayManagerClass, message_sent), + NULL, NULL, + _egg_marshal_VOID__OBJECT_STRING_LONG_LONG, + G_TYPE_NONE, 4, + GTK_TYPE_SOCKET, + G_TYPE_STRING, + G_TYPE_LONG, + G_TYPE_LONG); + manager_signals[MESSAGE_CANCELLED] = + g_signal_new ("message_cancelled", + G_OBJECT_CLASS_TYPE (klass), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EggTrayManagerClass, message_cancelled), + NULL, NULL, + _egg_marshal_VOID__OBJECT_LONG, + G_TYPE_NONE, 2, + GTK_TYPE_SOCKET, + G_TYPE_LONG); + manager_signals[LOST_SELECTION] = + g_signal_new ("lost_selection", + G_OBJECT_CLASS_TYPE (klass), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (EggTrayManagerClass, lost_selection), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + +} + +static void +egg_tray_manager_finalize (GObject *object) +{ + EggTrayManager *manager; + + manager = EGG_TRAY_MANAGER (object); + + egg_tray_manager_unmanage (manager); + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +EggTrayManager * +egg_tray_manager_new (void) +{ + EggTrayManager *manager; + + manager = g_object_new (EGG_TYPE_TRAY_MANAGER, NULL); + + return manager; +} + +static gboolean +egg_tray_manager_plug_removed (GtkSocket *socket, + EggTrayManager *manager) +{ + Window *window; + + window = g_object_get_data (G_OBJECT (socket), "egg-tray-child-window"); + + g_hash_table_remove (manager->socket_table, GINT_TO_POINTER (*window)); + g_object_set_data (G_OBJECT (socket), "egg-tray-child-window", + NULL); + + g_signal_emit (manager, manager_signals[TRAY_ICON_REMOVED], 0, socket); + + /* This destroys the socket. */ + return FALSE; +} + +static void +egg_tray_manager_handle_dock_request (EggTrayManager *manager, + XClientMessageEvent *xevent) +{ + GtkWidget *socket; + Window *window; + + socket = gtk_socket_new (); + + /* We need to set the child window here + * so that the client can call _get functions + * in the signal handler + */ + window = g_new (Window, 1); + *window = xevent->data.l[2]; + + g_object_set_data_full (G_OBJECT (socket), + "egg-tray-child-window", + window, g_free); + g_signal_emit (manager, manager_signals[TRAY_ICON_ADDED], 0, + socket); + + /* Add the socket only if it's been attached */ + if (GTK_IS_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (socket)))) + { + g_signal_connect (socket, "plug_removed", + G_CALLBACK (egg_tray_manager_plug_removed), manager); + + gtk_socket_add_id (GTK_SOCKET (socket), xevent->data.l[2]); + + g_hash_table_insert (manager->socket_table, GINT_TO_POINTER (xevent->data.l[2]), socket); + } + else + gtk_widget_destroy (socket); +} + +static void +pending_message_free (PendingMessage *message) +{ + g_free (message->str); + g_free (message); +} + +static void +egg_tray_manager_handle_message_data (EggTrayManager *manager, + XClientMessageEvent *xevent) +{ + GList *p; + int len; + + /* Try to see if we can find the + * pending message in the list + */ + for (p = manager->messages; p; p = p->next) + { + PendingMessage *msg = p->data; + + if (xevent->window == msg->window) + { + /* Append the message */ + len = MIN (msg->remaining_len, 20); + + memcpy ((msg->str + msg->len - msg->remaining_len), + &xevent->data, len); + msg->remaining_len -= len; + + if (msg->remaining_len == 0) + { + GtkSocket *socket; + + socket = g_hash_table_lookup (manager->socket_table, GINT_TO_POINTER (msg->window)); + + if (socket) + { + g_signal_emit (manager, manager_signals[MESSAGE_SENT], 0, + socket, msg->str, msg->id, msg->timeout); + } + manager->messages = g_list_remove_link (manager->messages, + p); + + pending_message_free (msg); + } + + return; + } + } +} + +static void +egg_tray_manager_handle_begin_message (EggTrayManager *manager, + XClientMessageEvent *xevent) +{ + GList *p; + PendingMessage *msg; + + /* Check if the same message is + * already in the queue and remove it if so + */ + for (p = manager->messages; p; p = p->next) + { + PendingMessage *msg = p->data; + + if (xevent->window == msg->window && + xevent->data.l[4] == msg->id) + { + /* Hmm, we found it, now remove it */ + pending_message_free (msg); + manager->messages = g_list_remove_link (manager->messages, p); + break; + } + } + + /* Now add the new message to the queue */ + msg = g_new0 (PendingMessage, 1); + msg->window = xevent->window; + msg->timeout = xevent->data.l[2]; + msg->len = xevent->data.l[3]; + msg->id = xevent->data.l[4]; + msg->remaining_len = msg->len; + msg->str = g_malloc (msg->len + 1); + msg->str[msg->len] = '\0'; + manager->messages = g_list_prepend (manager->messages, msg); +} + +static void +egg_tray_manager_handle_cancel_message (EggTrayManager *manager, + XClientMessageEvent *xevent) +{ + GtkSocket *socket; + + socket = g_hash_table_lookup (manager->socket_table, GINT_TO_POINTER (xevent->window)); + + if (socket) + { + g_signal_emit (manager, manager_signals[MESSAGE_CANCELLED], 0, + socket, xevent->data.l[2]); + } +} + +static GdkFilterReturn +egg_tray_manager_handle_event (EggTrayManager *manager, + XClientMessageEvent *xevent) +{ + switch (xevent->data.l[1]) + { + case SYSTEM_TRAY_REQUEST_DOCK: + egg_tray_manager_handle_dock_request (manager, xevent); + return GDK_FILTER_REMOVE; + + case SYSTEM_TRAY_BEGIN_MESSAGE: + egg_tray_manager_handle_begin_message (manager, xevent); + return GDK_FILTER_REMOVE; + + case SYSTEM_TRAY_CANCEL_MESSAGE: + egg_tray_manager_handle_cancel_message (manager, xevent); + return GDK_FILTER_REMOVE; + default: + break; + } + + return GDK_FILTER_CONTINUE; +} + +static GdkFilterReturn +egg_tray_manager_window_filter (GdkXEvent *xev, GdkEvent *event, gpointer data) +{ + XEvent *xevent = (GdkXEvent *)xev; + EggTrayManager *manager = data; + + if (xevent->type == ClientMessage) + { + if (xevent->xclient.message_type == manager->opcode_atom) + { + return egg_tray_manager_handle_event (manager, (XClientMessageEvent *)xevent); + } + else if (xevent->xclient.message_type == manager->message_data_atom) + { + egg_tray_manager_handle_message_data (manager, (XClientMessageEvent *)xevent); + return GDK_FILTER_REMOVE; + } + } + else if (xevent->type == SelectionClear) + { + g_signal_emit (manager, manager_signals[LOST_SELECTION], 0); + egg_tray_manager_unmanage (manager); + } + + return GDK_FILTER_CONTINUE; +} + +static void +egg_tray_manager_unmanage (EggTrayManager *manager) +{ + Display *display; + guint32 timestamp; + GtkWidget *invisible; + + if (manager->invisible == NULL) + return; + + invisible = manager->invisible; + g_assert (GTK_IS_INVISIBLE (invisible)); + g_assert (GTK_WIDGET_REALIZED (invisible)); + g_assert (GDK_IS_WINDOW (invisible->window)); + + display = GDK_WINDOW_XDISPLAY (invisible->window); + + if (XGetSelectionOwner (display, manager->selection_atom) == + GDK_WINDOW_XWINDOW (invisible->window)) + { + timestamp = gdk_x11_get_server_time (invisible->window); + XSetSelectionOwner (display, manager->selection_atom, None, timestamp); + } + + gdk_window_remove_filter (invisible->window, egg_tray_manager_window_filter, manager); + + manager->invisible = NULL; /* prior to destroy for reentrancy paranoia */ + gtk_widget_destroy (invisible); + g_object_unref (G_OBJECT (invisible)); +} + +static gboolean +egg_tray_manager_manage_xscreen (EggTrayManager *manager, Screen *xscreen) +{ + GtkWidget *invisible; + char *selection_atom_name; + guint32 timestamp; + GdkScreen *screen; + + g_return_val_if_fail (EGG_IS_TRAY_MANAGER (manager), FALSE); + g_return_val_if_fail (manager->screen == NULL, FALSE); + + /* If there's already a manager running on the screen + * we can't create another one. + */ +#if 0 + if (egg_tray_manager_check_running_xscreen (xscreen)) + return FALSE; +#endif + screen = gdk_display_get_screen (gdk_x11_lookup_xdisplay (DisplayOfScreen (xscreen)), + XScreenNumberOfScreen (xscreen)); + + invisible = gtk_invisible_new_for_screen (screen); + gtk_widget_realize (invisible); + + gtk_widget_add_events (invisible, GDK_PROPERTY_CHANGE_MASK | GDK_STRUCTURE_MASK); + + selection_atom_name = g_strdup_printf ("_NET_SYSTEM_TRAY_S%d", + XScreenNumberOfScreen (xscreen)); + manager->selection_atom = XInternAtom (DisplayOfScreen (xscreen), selection_atom_name, False); + + g_free (selection_atom_name); + + timestamp = gdk_x11_get_server_time (invisible->window); + XSetSelectionOwner (DisplayOfScreen (xscreen), manager->selection_atom, + GDK_WINDOW_XWINDOW (invisible->window), timestamp); + + /* Check if we were could set the selection owner successfully */ + if (XGetSelectionOwner (DisplayOfScreen (xscreen), manager->selection_atom) == + GDK_WINDOW_XWINDOW (invisible->window)) + { + XClientMessageEvent xev; + + xev.type = ClientMessage; + xev.window = RootWindowOfScreen (xscreen); + xev.message_type = XInternAtom (DisplayOfScreen (xscreen), "MANAGER", False); + + xev.format = 32; + xev.data.l[0] = timestamp; + xev.data.l[1] = manager->selection_atom; + xev.data.l[2] = GDK_WINDOW_XWINDOW (invisible->window); + xev.data.l[3] = 0; /* manager specific data */ + xev.data.l[4] = 0; /* manager specific data */ + + XSendEvent (DisplayOfScreen (xscreen), + RootWindowOfScreen (xscreen), + False, StructureNotifyMask, (XEvent *)&xev); + + manager->invisible = invisible; + g_object_ref (G_OBJECT (manager->invisible)); + + manager->opcode_atom = XInternAtom (DisplayOfScreen (xscreen), + "_NET_SYSTEM_TRAY_OPCODE", + False); + + manager->message_data_atom = XInternAtom (DisplayOfScreen (xscreen), + "_NET_SYSTEM_TRAY_MESSAGE_DATA", + False); + + /* Add a window filter */ + gdk_window_add_filter (invisible->window, egg_tray_manager_window_filter, manager); + return TRUE; + } + else + { + gtk_widget_destroy (invisible); + + return FALSE; + } +} + +gboolean +egg_tray_manager_manage_screen (EggTrayManager *manager, + GdkScreen *screen) +{ + g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE); + g_return_val_if_fail (manager->screen == NULL, FALSE); + + return egg_tray_manager_manage_xscreen (manager, + GDK_SCREEN_XSCREEN (screen)); +} + +static gboolean +egg_tray_manager_check_running_xscreen (Screen *xscreen) +{ + Atom selection_atom; + char *selection_atom_name; + + selection_atom_name = g_strdup_printf ("_NET_SYSTEM_TRAY_S%d", + XScreenNumberOfScreen (xscreen)); + selection_atom = XInternAtom (DisplayOfScreen (xscreen), selection_atom_name, False); + g_free (selection_atom_name); + + if (XGetSelectionOwner (DisplayOfScreen (xscreen), selection_atom)) + return TRUE; + else + return FALSE; +} + +gboolean +egg_tray_manager_check_running (GdkScreen *screen) +{ + g_return_val_if_fail (GDK_IS_SCREEN (screen), FALSE); + + return egg_tray_manager_check_running_xscreen (GDK_SCREEN_XSCREEN (screen)); +} + +char * +egg_tray_manager_get_child_title (EggTrayManager *manager, + EggTrayManagerChild *child) +{ + Window *child_window; + Atom utf8_string, atom, type; + int result; + char *retval; + int format; + gulong nitems; + gulong bytes_after; + guchar *val; + + g_return_val_if_fail (EGG_IS_TRAY_MANAGER (manager), NULL); + g_return_val_if_fail (GTK_IS_SOCKET (child), NULL); + + child_window = g_object_get_data (G_OBJECT (child), + "egg-tray-child-window"); + + utf8_string = XInternAtom (gdk_helper_display(), "UTF8_STRING", False); + atom = XInternAtom (gdk_helper_display(), "_NET_WM_NAME", False); + + gdk_error_trap_push (); + + result = XGetWindowProperty (gdk_helper_display(), + *child_window, + atom, + 0, G_MAXLONG, + False, utf8_string, + &type, &format, &nitems, + &bytes_after, (guchar **)&val); + + if (gdk_error_trap_pop () || result != Success) + return NULL; + + if (type != utf8_string || + format != 8 || + nitems == 0) + { + if (val) + XFree (val); + return NULL; + } + + if (!g_utf8_validate ((const gchar*) val, nitems, NULL)) + { + XFree (val); + return NULL; + } + + retval = g_strndup ((const gchar*) val, nitems); + + XFree (val); + + return retval; + +} diff --git a/src/c/gdk-helper.c b/src/c/gdk-helper.c new file mode 100644 --- /dev/null +++ b/src/c/gdk-helper.c @@ -0,0 +1,7 @@ +#include + +#include "gdk-helper.h" + +Display* gdk_helper_display() { + return gdk_x11_display_get_xdisplay(gdk_display_get_default()); +}