/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /* * Copyright (c) 2008 Red Hat, Inc. * Copyright (c) 2008 Intel Corp. * * Based on plugin skeleton by: * Author: Tomas Frydrych * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program 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 * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA * 02111-1307, USA. */ #include "config.h" #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_MALLINFO #include #endif #include #include #include #include #include "display.h" #include "shell-global-private.h" #include "shell-perf-log.h" #include "shell-wm-private.h" #include "st.h" #include "shell-a11y.h" static void gnome_shell_plugin_dispose (GObject *object); static void gnome_shell_plugin_finalize (GObject *object); static void gnome_shell_plugin_start (MetaPlugin *plugin); static void gnome_shell_plugin_minimize (MetaPlugin *plugin, MetaWindowActor *actor); static void gnome_shell_plugin_maximize (MetaPlugin *plugin, MetaWindowActor *actor, gint x, gint y, gint width, gint height); static void gnome_shell_plugin_unmaximize (MetaPlugin *plugin, MetaWindowActor *actor, gint x, gint y, gint width, gint height); static void gnome_shell_plugin_map (MetaPlugin *plugin, MetaWindowActor *actor); static void gnome_shell_plugin_destroy (MetaPlugin *plugin, MetaWindowActor *actor); static void gnome_shell_plugin_switch_workspace (MetaPlugin *plugin, gint from, gint to, MetaMotionDirection direction); static void gnome_shell_plugin_kill_window_effects (MetaPlugin *plugin, MetaWindowActor *actor); static void gnome_shell_plugin_kill_switch_workspace (MetaPlugin *plugin); static gboolean gnome_shell_plugin_xevent_filter (MetaPlugin *plugin, XEvent *event); static const MetaPluginInfo *gnome_shell_plugin_plugin_info (MetaPlugin *plugin); #define GNOME_TYPE_SHELL_PLUGIN (gnome_shell_plugin_get_type ()) #define GNOME_SHELL_PLUGIN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GNOME_TYPE_SHELL_PLUGIN, GnomeShellPlugin)) #define GNOME_SHELL_PLUGIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GNOME_TYPE_SHELL_PLUGIN, GnomeShellPluginClass)) #define GNOME_IS_SHELL_PLUGIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GNOME_SHELL_PLUGIN_TYPE)) #define GNOME_IS_SHELL_PLUGIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GNOME_TYPE_SHELL_PLUGIN)) #define GNOME_SHELL_PLUGIN_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GNOME_TYPE_SHELL_PLUGIN, GnomeShellPluginClass)) typedef struct _GnomeShellPlugin GnomeShellPlugin; typedef struct _GnomeShellPluginClass GnomeShellPluginClass; struct _GnomeShellPlugin { MetaPlugin parent; GjsContext *gjs_context; Atom panel_action; Atom panel_action_run_dialog; Atom panel_action_main_menu; int glx_error_base; int glx_event_base; guint have_swap_event : 1; ShellGlobal *global; }; struct _GnomeShellPluginClass { MetaPluginClass parent_class; }; /* * Create the plugin struct; function pointers initialized in * g_module_check_init(). */ META_PLUGIN_DECLARE(GnomeShellPlugin, gnome_shell_plugin); static void gnome_shell_plugin_class_init (GnomeShellPluginClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); MetaPluginClass *plugin_class = META_PLUGIN_CLASS (klass); gobject_class->dispose = gnome_shell_plugin_dispose; gobject_class->finalize = gnome_shell_plugin_finalize; plugin_class->start = gnome_shell_plugin_start; plugin_class->map = gnome_shell_plugin_map; plugin_class->minimize = gnome_shell_plugin_minimize; plugin_class->maximize = gnome_shell_plugin_maximize; plugin_class->unmaximize = gnome_shell_plugin_unmaximize; plugin_class->destroy = gnome_shell_plugin_destroy; plugin_class->switch_workspace = gnome_shell_plugin_switch_workspace; plugin_class->kill_window_effects = gnome_shell_plugin_kill_window_effects; plugin_class->kill_switch_workspace = gnome_shell_plugin_kill_switch_workspace; plugin_class->xevent_filter = gnome_shell_plugin_xevent_filter; plugin_class->plugin_info = gnome_shell_plugin_plugin_info; } static void gnome_shell_plugin_init (GnomeShellPlugin *shell_plugin) { g_setenv ("XDG_MENU_PREFIX", "gs-", TRUE); meta_prefs_override_preference_location ("/apps/mutter/general/attach_modal_dialogs", "/desktop/gnome/shell/windows/attach_modal_dialogs"); meta_prefs_override_preference_location ("/apps/metacity/general/button_layout", "/desktop/gnome/shell/windows/button_layout"); meta_prefs_override_preference_location ("/apps/metacity/general/edge_tiling", "/desktop/gnome/shell/windows/edge_tiling"); meta_prefs_override_preference_location ("/apps/metacity/general/theme", "/desktop/gnome/shell/windows/theme"); } static void update_font_options (GtkSettings *settings) { StThemeContext *context; ClutterStage *stage; ClutterBackend *backend; gint dpi; gint hinting; gchar *hint_style_str; cairo_hint_style_t hint_style = CAIRO_HINT_STYLE_NONE; gint antialias; cairo_antialias_t antialias_mode = CAIRO_ANTIALIAS_NONE; cairo_font_options_t *options; /* Disable text mipmapping; it causes problems on pre-GEM Intel * drivers and we should just be rendering text at the right * size rather than scaling it. If we do effects where we dynamically * zoom labels, then we might want to reconsider. */ clutter_set_font_flags (clutter_get_font_flags () & ~CLUTTER_FONT_MIPMAPPING); g_object_get (settings, "gtk-xft-dpi", &dpi, "gtk-xft-antialias", &antialias, "gtk-xft-hinting", &hinting, "gtk-xft-hintstyle", &hint_style_str, NULL); stage = CLUTTER_STAGE (clutter_stage_get_default ()); context = st_theme_context_get_for_stage (stage); if (dpi != -1) /* GTK stores resolution as 1024 * dots/inch */ st_theme_context_set_resolution (context, dpi / 1024); else st_theme_context_set_default_resolution (context); /* Clutter (as of 0.9) passes comprehensively wrong font options * override whatever set_font_flags() did above. * * http://bugzilla.openedhand.com/show_bug.cgi?id=1456 */ backend = clutter_get_default_backend (); options = cairo_font_options_create (); cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_ON); if (hinting >= 0 && !hinting) { hint_style = CAIRO_HINT_STYLE_NONE; } else if (hint_style_str) { if (strcmp (hint_style_str, "hintnone") == 0) hint_style = CAIRO_HINT_STYLE_NONE; else if (strcmp (hint_style_str, "hintslight") == 0) hint_style = CAIRO_HINT_STYLE_SLIGHT; else if (strcmp (hint_style_str, "hintmedium") == 0) hint_style = CAIRO_HINT_STYLE_MEDIUM; else if (strcmp (hint_style_str, "hintfull") == 0) hint_style = CAIRO_HINT_STYLE_FULL; } g_free (hint_style_str); cairo_font_options_set_hint_style (options, hint_style); /* We don't want to turn on subpixel anti-aliasing; since Clutter * doesn't currently have the code to support ARGB masks, * generating them then squashing them back to A8 is pointless. */ antialias_mode = (antialias < 0 || antialias) ? CAIRO_ANTIALIAS_GRAY : CAIRO_ANTIALIAS_NONE; cairo_font_options_set_antialias (options, antialias_mode); clutter_backend_set_font_options (backend, options); cairo_font_options_destroy (options); } static void settings_notify_cb (GtkSettings *settings, GParamSpec *pspec, gpointer data) { update_font_options (settings); } static void malloc_statistics_callback (ShellPerfLog *perf_log, gpointer data) { #ifdef HAVE_MALLINFO struct mallinfo info = mallinfo (); shell_perf_log_update_statistic_i (perf_log, "malloc.arenaSize", info.arena); shell_perf_log_update_statistic_i (perf_log, "malloc.mmapSize", info.hblkhd); shell_perf_log_update_statistic_i (perf_log, "malloc.usedSize", info.uordblks); #endif } static void add_statistics (GnomeShellPlugin *shell_plugin) { ShellPerfLog *perf_log = shell_perf_log_get_default (); /* For probably historical reasons, mallinfo() defines the returned values, * even those in bytes as int, not size_t. We're determined not to use * more than 2G of malloc'ed memory, so are OK with that. */ shell_perf_log_define_statistic (perf_log, "malloc.arenaSize", "Amount of memory allocated by malloc() with brk(), in bytes", "i"); shell_perf_log_define_statistic (perf_log, "malloc.mmapSize", "Amount of memory allocated by malloc() with mmap(), in bytes", "i"); shell_perf_log_define_statistic (perf_log, "malloc.usedSize", "Amount of malloc'ed memory currently in use", "i"); shell_perf_log_add_statistics_callback (perf_log, malloc_statistics_callback, NULL, NULL); } /* This is an IBus workaround. The flow of events with IBus is that every time * it gets gets a key event, it: * * Sends it to the daemon via D-Bus asynchronously * When it gets an reply, synthesizes a new GdkEvent and puts it into the * GDK event queue with gdk_event_put(), including * IBUS_FORWARD_MASK = 1 << 25 in the state to prevent a loop. * * (Normally, IBus uses the GTK+ key snooper mechanism to get the key * events early, but since our key events aren't visible to GTK+ key snoopers, * IBus will instead get the events via the standard * GtkIMContext.filter_keypress() mechanism.) * * There are a number of potential problems here; probably the worst * problem is that IBus doesn't forward the timestamp with the event * so that every key event that gets delivered ends up with * GDK_CURRENT_TIME. This creates some very subtle bugs; for example * if you have IBus running and a keystroke is used to trigger * launching an application, focus stealing prevention won't work * right. http://code.google.com/p/ibus/issues/detail?id=1184 * * In any case, our normal flow of key events is: * * GDK filter function => clutter_x11_handle_event => clutter actor * * So, if we see a key event that gets delivered via the GDK event handler * function - then we know it must be one of these synthesized events, and * we should push it back to clutter. * * To summarize, the full key event flow with IBus is: * * GDK filter function * => Mutter * => gnome_shell_plugin_xevent_filter() * => clutter_x11_handle_event() * => clutter event delivery to actor * => gtk_im_context_filter_event() * => sent to IBus daemon * => response received from IBus daemon * => gdk_event_put() * => GDK event handler * => * => clutter_event_put() * => clutter event delivery to actor * * Anything else we see here we just pass on to the normal GDK event handler * gtk_main_do_event(). */ static void gnome_shell_gdk_event_handler (GdkEvent *event_gdk, gpointer data) { if (event_gdk->type == GDK_KEY_PRESS || event_gdk->type == GDK_KEY_RELEASE) { ClutterActor *stage; Window stage_xwindow; stage = clutter_stage_get_default (); stage_xwindow = clutter_x11_get_stage_window (CLUTTER_STAGE (stage)); if (GDK_WINDOW_XID (event_gdk->key.window) == stage_xwindow) { ClutterDeviceManager *device_manager = clutter_device_manager_get_default (); ClutterInputDevice *keyboard = clutter_device_manager_get_core_device (device_manager, CLUTTER_KEYBOARD_DEVICE); ClutterEvent *event_clutter = clutter_event_new ((event_gdk->type == GDK_KEY_RELEASE) ? CLUTTER_KEY_PRESS : CLUTTER_KEY_RELEASE); event_clutter->key.time = event_gdk->key.time; event_clutter->key.flags = CLUTTER_EVENT_NONE; event_clutter->key.stage = CLUTTER_STAGE (stage); event_clutter->key.source = NULL; /* This depends on ClutterModifierType and GdkModifierType being * identical, which they are currently. (They both match the X * modifier state in the low 16-bits and have the same extensions.) */ event_clutter->key.modifier_state = event_gdk->key.state; event_clutter->key.keyval = event_gdk->key.keyval; event_clutter->key.hardware_keycode = event_gdk->key.hardware_keycode; event_clutter->key.unicode_value = gdk_keyval_to_unicode (event_clutter->key.keyval); event_clutter->key.device = keyboard; clutter_event_put (event_clutter); clutter_event_free (event_clutter); return; } } gtk_main_do_event (event_gdk); } static void muted_log_handler (const char *log_domain, GLogLevelFlags log_level, const char *message, gpointer data) { /* Intentionally empty to discard message */ } static void gnome_shell_plugin_start (MetaPlugin *plugin) { GnomeShellPlugin *shell_plugin = GNOME_SHELL_PLUGIN (plugin); MetaScreen *screen; MetaDisplay *display; Display *xdisplay; GtkSettings *settings; GError *error = NULL; int status; const char *shell_js; char **search_path; const char *glx_extensions; bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR); bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8"); shell_a11y_init (); settings = gtk_settings_get_default (); g_object_connect (settings, "signal::notify::gtk-xft-dpi", G_CALLBACK (settings_notify_cb), NULL, "signal::notify::gtk-xft-antialias", G_CALLBACK (settings_notify_cb), NULL, "signal::notify::gtk-xft-hinting", G_CALLBACK (settings_notify_cb), NULL, "signal::notify::gtk-xft-hintstyle", G_CALLBACK (settings_notify_cb), NULL, NULL); update_font_options (settings); gdk_event_handler_set (gnome_shell_gdk_event_handler, plugin, NULL); screen = meta_plugin_get_screen (plugin); display = meta_screen_get_display (screen); xdisplay = meta_display_get_xdisplay (display); glXQueryExtension (xdisplay, &shell_plugin->glx_error_base, &shell_plugin->glx_event_base); glx_extensions = glXQueryExtensionsString (xdisplay, meta_screen_get_screen_number (screen)); shell_plugin->have_swap_event = strstr (glx_extensions, "GLX_INTEL_swap_event") != NULL; shell_perf_log_define_event (shell_perf_log_get_default (), "glx.swapComplete", "GL buffer swap complete event received (with timestamp of completion)", "x"); #if HAVE_BLUETOOTH g_irepository_prepend_search_path (BLUETOOTH_DIR); #endif g_irepository_prepend_search_path (GNOME_SHELL_PKGLIBDIR); shell_js = g_getenv("GNOME_SHELL_JS"); if (!shell_js) shell_js = JSDIR; search_path = g_strsplit(shell_js, ":", -1); shell_plugin->gjs_context = g_object_new (GJS_TYPE_CONTEXT, "search-path", search_path, "js-version", "1.8", NULL); g_strfreev(search_path); /* Disable debug spew from various libraries */ g_log_set_handler ("Gvc", G_LOG_LEVEL_DEBUG, muted_log_handler, NULL); g_log_set_handler ("GdmUser", G_LOG_LEVEL_DEBUG, muted_log_handler, NULL); g_log_set_handler ("libgnome-bluetooth", G_LOG_LEVEL_DEBUG | G_LOG_LEVEL_MESSAGE, muted_log_handler, NULL); /* Initialize the global object here. */ shell_plugin->global = shell_global_get (); _shell_global_set_plugin (shell_plugin->global, META_PLUGIN(shell_plugin)); _shell_global_set_gjs_context (shell_plugin->global, shell_plugin->gjs_context); add_statistics (shell_plugin); if (!gjs_context_eval (shell_plugin->gjs_context, "const Main = imports.ui.main; Main.start();", -1, "
", &status, &error)) { g_message ("Execution of main.js threw exception: %s", error->message); g_error_free (error); /* We just exit() here, since in a development environment you'll get the * error in your shell output, and it's way better than a busted WM, * which typically manifests as a white screen. * * In production, we shouldn't crash =) But if we do, we should get * restarted by the session infrastructure, which is likely going * to be better than some undefined state. * * If there was a generic "hook into bug-buddy for non-C crashes" * infrastructure, here would be the place to put it. */ exit (1); } } static void gnome_shell_plugin_dispose (GObject *object) { G_OBJECT_CLASS(gnome_shell_plugin_parent_class)->dispose (object); } static void gnome_shell_plugin_finalize (GObject *object) { G_OBJECT_CLASS(gnome_shell_plugin_parent_class)->finalize (object); } static ShellWM * get_shell_wm (void) { ShellWM *wm; g_object_get (shell_global_get (), "window-manager", &wm, NULL); /* drop extra ref added by g_object_get */ g_object_unref (wm); return wm; } static void gnome_shell_plugin_minimize (MetaPlugin *plugin, MetaWindowActor *actor) { _shell_wm_minimize (get_shell_wm (), actor); } static void gnome_shell_plugin_maximize (MetaPlugin *plugin, MetaWindowActor *actor, gint x, gint y, gint width, gint height) { _shell_wm_maximize (get_shell_wm (), actor, x, y, width, height); } static void gnome_shell_plugin_unmaximize (MetaPlugin *plugin, MetaWindowActor *actor, gint x, gint y, gint width, gint height) { _shell_wm_unmaximize (get_shell_wm (), actor, x, y, width, height); } static void gnome_shell_plugin_map (MetaPlugin *plugin, MetaWindowActor *actor) { _shell_wm_map (get_shell_wm (), actor); } static void gnome_shell_plugin_destroy (MetaPlugin *plugin, MetaWindowActor *actor) { _shell_wm_destroy (get_shell_wm (), actor); } static void gnome_shell_plugin_switch_workspace (MetaPlugin *plugin, gint from, gint to, MetaMotionDirection direction) { _shell_wm_switch_workspace (get_shell_wm(), from, to, direction); } static void gnome_shell_plugin_kill_window_effects (MetaPlugin *plugin, MetaWindowActor *actor) { _shell_wm_kill_window_effects (get_shell_wm(), actor); } static void gnome_shell_plugin_kill_switch_workspace (MetaPlugin *plugin) { _shell_wm_kill_switch_workspace (get_shell_wm()); } static gboolean gnome_shell_plugin_xevent_filter (MetaPlugin *plugin, XEvent *xev) { GnomeShellPlugin *shell_plugin = GNOME_SHELL_PLUGIN (plugin); #ifdef GLX_INTEL_swap_event if (shell_plugin->have_swap_event && xev->type == (shell_plugin->glx_event_base + GLX_BufferSwapComplete)) { GLXBufferSwapComplete *swap_complete_event; swap_complete_event = (GLXBufferSwapComplete *)xev; /* Buggy early versions of the INTEL_swap_event implementation in Mesa * can send this with a ust of 0. Simplify life for consumers * by ignoring such events */ if (swap_complete_event->ust != 0) shell_perf_log_event_x (shell_perf_log_get_default (), "glx.swapComplete", swap_complete_event->ust); } #endif /* When the pointer leaves the stage to enter a child of the stage * (like a notification icon), we don't want to produce Clutter leave * events. But Clutter treats all leave events identically, so we * need hide the detail = NotifyInferior events from it. * * Since Clutter doesn't see any event at all, this does mean that * it won't produce an enter event on a Clutter actor that surrounds * the child (unless it gets a MotionNotify before the Enter event). * Other weirdness is likely also possible. */ if ((xev->xany.type == EnterNotify || xev->xany.type == LeaveNotify) && xev->xcrossing.detail == NotifyInferior && xev->xcrossing.window == clutter_x11_get_stage_window (CLUTTER_STAGE (clutter_stage_get_default ()))) return TRUE; /* * Pass the event to shell-global */ if (_shell_global_check_xdnd_event (shell_plugin->global, xev)) return TRUE; return clutter_x11_handle_event (xev) != CLUTTER_X11_FILTER_CONTINUE; } static const MetaPluginInfo *gnome_shell_plugin_plugin_info (MetaPlugin *plugin) { static const MetaPluginInfo info = { .name = "GNOME Shell", .version = "0.1", .author = "Various", .license = "GPLv2+", .description = "Provides GNOME Shell core functionality" }; return &info; }