461 lines
16 KiB
C
461 lines
16 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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#include "config.h"
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#ifdef HAVE_MALLINFO
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#include <malloc.h>
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <clutter/clutter.h>
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#include <clutter/x11/clutter-x11.h>
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#include <dbus/dbus-glib.h>
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#include <gdk/gdk.h>
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#include <gdk/gdkx.h>
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#include <gtk/gtk.h>
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#include <glib/gi18n-lib.h>
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#include <girepository.h>
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#include <meta/main.h>
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#include <meta/meta-plugin.h>
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#include <meta/prefs.h>
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#include "shell-a11y.h"
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#include "shell-global.h"
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#include "shell-perf-log.h"
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#include "st.h"
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extern GType gnome_shell_plugin_get_type (void);
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#define SHELL_DBUS_SERVICE "org.gnome.Shell"
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#define MAGNIFIER_DBUS_SERVICE "org.gnome.Magnifier"
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static void
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shell_dbus_init (void)
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{
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GError *error = NULL;
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DBusGConnection *session;
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DBusGProxy *bus;
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guint32 request_name_result;
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/** TODO:
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* In the future we should use GDBus for this. However, in
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* order to do that, we need to port all of the JavaScript
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* code. Otherwise, the name will be claimed on the wrong
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* connection.
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*/
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session = dbus_g_bus_get (DBUS_BUS_SESSION, NULL);
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bus = dbus_g_proxy_new_for_name (session,
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DBUS_SERVICE_DBUS,
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DBUS_PATH_DBUS,
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DBUS_INTERFACE_DBUS);
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if (!dbus_g_proxy_call (bus, "RequestName", &error,
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G_TYPE_STRING, SHELL_DBUS_SERVICE,
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G_TYPE_UINT, 0,
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G_TYPE_INVALID,
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G_TYPE_UINT, &request_name_result,
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G_TYPE_INVALID))
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{
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g_print ("failed to acquire org.gnome.Shell: %s\n", error->message);
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/* If we somehow got started again, it's not an error to be running
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* already. So just exit 0.
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*/
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exit (0);
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}
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/* Also grab org.gnome.Panel to replace any existing panel process,
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* unless a special environment variable is passed. The environment
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* variable is used by the gnome-shell (no --replace) launcher in
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* Xephyr */
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if (!dbus_g_proxy_call (bus, "RequestName", &error, G_TYPE_STRING,
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"org.gnome.Panel", G_TYPE_UINT,
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DBUS_NAME_FLAG_REPLACE_EXISTING | DBUS_NAME_FLAG_DO_NOT_QUEUE,
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G_TYPE_INVALID, G_TYPE_UINT,
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&request_name_result, G_TYPE_INVALID))
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{
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g_print ("failed to acquire org.gnome.Panel: %s\n", error->message);
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exit (1);
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}
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/* ...and the org.gnome.Magnifier service.
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*/
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if (!dbus_g_proxy_call (bus, "RequestName", &error,
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G_TYPE_STRING, MAGNIFIER_DBUS_SERVICE,
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G_TYPE_UINT, 0,
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G_TYPE_INVALID,
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G_TYPE_UINT, &request_name_result,
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G_TYPE_INVALID))
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{
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g_print ("failed to acquire %s: %s\n", MAGNIFIER_DBUS_SERVICE, error->message);
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/* Failing to acquire the magnifer service is not fatal. Log the error,
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* but keep going. */
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}
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/* ...and the org.freedesktop.Notifications service.
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*/
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if (!dbus_g_proxy_call (bus, "RequestName", &error,
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G_TYPE_STRING, "org.freedesktop.Notifications",
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G_TYPE_UINT, DBUS_NAME_FLAG_REPLACE_EXISTING | DBUS_NAME_FLAG_DO_NOT_QUEUE,
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G_TYPE_INVALID,
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G_TYPE_UINT, &request_name_result,
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G_TYPE_INVALID))
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{
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g_print ("failed to acquire org.freedesktop.Notifications: %s\n", error->message);
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}
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g_object_unref (bus);
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}
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static void
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update_font_options (GtkSettings *settings)
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{
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StThemeContext *context;
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ClutterStage *stage;
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ClutterBackend *backend;
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gint dpi;
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gint hinting;
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gchar *hint_style_str;
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cairo_hint_style_t hint_style = CAIRO_HINT_STYLE_NONE;
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gint antialias;
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cairo_antialias_t antialias_mode = CAIRO_ANTIALIAS_NONE;
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cairo_font_options_t *options;
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g_object_get (settings,
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"gtk-xft-dpi", &dpi,
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"gtk-xft-antialias", &antialias,
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"gtk-xft-hinting", &hinting,
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"gtk-xft-hintstyle", &hint_style_str,
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NULL);
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stage = CLUTTER_STAGE (clutter_stage_get_default ());
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context = st_theme_context_get_for_stage (stage);
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if (dpi != -1)
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/* GTK stores resolution as 1024 * dots/inch */
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st_theme_context_set_resolution (context, dpi / 1024);
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else
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st_theme_context_set_default_resolution (context);
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/* Clutter (as of 0.9) passes comprehensively wrong font options
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* override whatever set_font_flags() did above.
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*
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* http://bugzilla.openedhand.com/show_bug.cgi?id=1456
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*/
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backend = clutter_get_default_backend ();
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options = cairo_font_options_create ();
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cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_ON);
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if (hinting >= 0 && !hinting)
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{
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hint_style = CAIRO_HINT_STYLE_NONE;
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}
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else if (hint_style_str)
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{
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if (strcmp (hint_style_str, "hintnone") == 0)
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hint_style = CAIRO_HINT_STYLE_NONE;
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else if (strcmp (hint_style_str, "hintslight") == 0)
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hint_style = CAIRO_HINT_STYLE_SLIGHT;
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else if (strcmp (hint_style_str, "hintmedium") == 0)
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hint_style = CAIRO_HINT_STYLE_MEDIUM;
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else if (strcmp (hint_style_str, "hintfull") == 0)
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hint_style = CAIRO_HINT_STYLE_FULL;
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}
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g_free (hint_style_str);
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cairo_font_options_set_hint_style (options, hint_style);
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/* We don't want to turn on subpixel anti-aliasing; since Clutter
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* doesn't currently have the code to support ARGB masks,
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* generating them then squashing them back to A8 is pointless.
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*/
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antialias_mode = (antialias < 0 || antialias) ? CAIRO_ANTIALIAS_GRAY
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: CAIRO_ANTIALIAS_NONE;
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cairo_font_options_set_antialias (options, antialias_mode);
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clutter_backend_set_font_options (backend, options);
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cairo_font_options_destroy (options);
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}
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static void
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settings_notify_cb (GtkSettings *settings,
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GParamSpec *pspec,
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gpointer data)
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{
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update_font_options (settings);
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}
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static void
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shell_fonts_init (void)
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{
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GtkSettings *settings;
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/* Disable text mipmapping; it causes problems on pre-GEM Intel
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* drivers and we should just be rendering text at the right
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* size rather than scaling it. If we do effects where we dynamically
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* zoom labels, then we might want to reconsider.
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*/
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clutter_set_font_flags (clutter_get_font_flags () & ~CLUTTER_FONT_MIPMAPPING);
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settings = gtk_settings_get_default ();
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g_object_connect (settings,
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"signal::notify::gtk-xft-dpi",
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G_CALLBACK (settings_notify_cb), NULL,
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"signal::notify::gtk-xft-antialias",
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G_CALLBACK (settings_notify_cb), NULL,
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"signal::notify::gtk-xft-hinting",
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G_CALLBACK (settings_notify_cb), NULL,
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"signal::notify::gtk-xft-hintstyle",
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G_CALLBACK (settings_notify_cb), NULL,
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NULL);
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update_font_options (settings);
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}
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static void
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shell_prefs_init (void)
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{
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meta_prefs_override_preference_location ("/apps/mutter/general/attach_modal_dialogs",
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"/desktop/gnome/shell/windows/attach_modal_dialogs");
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meta_prefs_override_preference_location ("/apps/metacity/general/button_layout",
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"/desktop/gnome/shell/windows/button_layout");
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meta_prefs_override_preference_location ("/apps/metacity/general/edge_tiling",
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"/desktop/gnome/shell/windows/edge_tiling");
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meta_prefs_override_preference_location ("/apps/metacity/general/theme",
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"/desktop/gnome/shell/windows/theme");
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}
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/* This is an IBus workaround. The flow of events with IBus is that every time
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* it gets gets a key event, it:
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*
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* Sends it to the daemon via D-Bus asynchronously
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* When it gets an reply, synthesizes a new GdkEvent and puts it into the
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* GDK event queue with gdk_event_put(), including
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* IBUS_FORWARD_MASK = 1 << 25 in the state to prevent a loop.
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*
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* (Normally, IBus uses the GTK+ key snooper mechanism to get the key
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* events early, but since our key events aren't visible to GTK+ key snoopers,
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* IBus will instead get the events via the standard
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* GtkIMContext.filter_keypress() mechanism.)
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*
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* There are a number of potential problems here; probably the worst
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* problem is that IBus doesn't forward the timestamp with the event
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* so that every key event that gets delivered ends up with
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* GDK_CURRENT_TIME. This creates some very subtle bugs; for example
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* if you have IBus running and a keystroke is used to trigger
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* launching an application, focus stealing prevention won't work
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* right. http://code.google.com/p/ibus/issues/detail?id=1184
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*
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* In any case, our normal flow of key events is:
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*
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* GDK filter function => clutter_x11_handle_event => clutter actor
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*
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* So, if we see a key event that gets delivered via the GDK event handler
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* function - then we know it must be one of these synthesized events, and
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* we should push it back to clutter.
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*
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* To summarize, the full key event flow with IBus is:
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*
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* GDK filter function
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* => Mutter
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* => gnome_shell_plugin_xevent_filter()
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* => clutter_x11_handle_event()
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* => clutter event delivery to actor
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* => gtk_im_context_filter_event()
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* => sent to IBus daemon
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* => response received from IBus daemon
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* => gdk_event_put()
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* => GDK event handler
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* => <this function>
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* => clutter_event_put()
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* => clutter event delivery to actor
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*
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* Anything else we see here we just pass on to the normal GDK event handler
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* gtk_main_do_event().
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*/
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static void
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gnome_shell_gdk_event_handler (GdkEvent *event_gdk,
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gpointer data)
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{
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if (event_gdk->type == GDK_KEY_PRESS || event_gdk->type == GDK_KEY_RELEASE)
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{
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ClutterActor *stage;
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Window stage_xwindow;
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stage = clutter_stage_get_default ();
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stage_xwindow = clutter_x11_get_stage_window (CLUTTER_STAGE (stage));
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if (GDK_WINDOW_XID (event_gdk->key.window) == stage_xwindow)
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{
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ClutterDeviceManager *device_manager = clutter_device_manager_get_default ();
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ClutterInputDevice *keyboard = clutter_device_manager_get_core_device (device_manager,
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CLUTTER_KEYBOARD_DEVICE);
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ClutterEvent *event_clutter = clutter_event_new ((event_gdk->type == GDK_KEY_PRESS) ?
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CLUTTER_KEY_PRESS : CLUTTER_KEY_RELEASE);
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event_clutter->key.time = event_gdk->key.time;
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event_clutter->key.flags = CLUTTER_EVENT_NONE;
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event_clutter->key.stage = CLUTTER_STAGE (stage);
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event_clutter->key.source = NULL;
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/* This depends on ClutterModifierType and GdkModifierType being
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* identical, which they are currently. (They both match the X
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* modifier state in the low 16-bits and have the same extensions.) */
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event_clutter->key.modifier_state = event_gdk->key.state;
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event_clutter->key.keyval = event_gdk->key.keyval;
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event_clutter->key.hardware_keycode = event_gdk->key.hardware_keycode;
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event_clutter->key.unicode_value = gdk_keyval_to_unicode (event_clutter->key.keyval);
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event_clutter->key.device = keyboard;
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clutter_event_put (event_clutter);
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clutter_event_free (event_clutter);
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return;
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}
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}
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gtk_main_do_event (event_gdk);
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}
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static void
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malloc_statistics_callback (ShellPerfLog *perf_log,
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gpointer data)
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{
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#ifdef HAVE_MALLINFO
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struct mallinfo info = mallinfo ();
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shell_perf_log_update_statistic_i (perf_log,
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"malloc.arenaSize",
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info.arena);
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shell_perf_log_update_statistic_i (perf_log,
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"malloc.mmapSize",
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info.hblkhd);
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shell_perf_log_update_statistic_i (perf_log,
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"malloc.usedSize",
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info.uordblks);
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#endif
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}
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static void
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shell_perf_log_init (void)
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{
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ShellPerfLog *perf_log = shell_perf_log_get_default ();
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/* For probably historical reasons, mallinfo() defines the returned values,
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* even those in bytes as int, not size_t. We're determined not to use
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* more than 2G of malloc'ed memory, so are OK with that.
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*/
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shell_perf_log_define_statistic (perf_log,
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"malloc.arenaSize",
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"Amount of memory allocated by malloc() with brk(), in bytes",
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"i");
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shell_perf_log_define_statistic (perf_log,
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"malloc.mmapSize",
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"Amount of memory allocated by malloc() with mmap(), in bytes",
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"i");
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shell_perf_log_define_statistic (perf_log,
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"malloc.usedSize",
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"Amount of malloc'ed memory currently in use",
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"i");
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shell_perf_log_add_statistics_callback (perf_log,
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malloc_statistics_callback,
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NULL, NULL);
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}
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static void
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muted_log_handler (const char *log_domain,
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GLogLevelFlags log_level,
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const char *message,
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gpointer data)
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{
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/* Intentionally empty to discard message */
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}
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static gboolean
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print_version (const gchar *option_name,
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const gchar *value,
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gpointer data,
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GError **error)
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{
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g_print ("GNOME Shell %s\n", VERSION);
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exit (0);
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}
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GOptionEntry gnome_shell_options[] = {
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{
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"version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
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print_version,
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N_("Print version"),
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NULL
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},
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{ NULL }
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};
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int
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main (int argc, char **argv)
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{
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GOptionContext *ctx;
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GError *error = NULL;
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g_type_init ();
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bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
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bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
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ctx = meta_get_option_context ();
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g_option_context_add_main_entries (ctx, gnome_shell_options, GETTEXT_PACKAGE);
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if (!g_option_context_parse (ctx, &argc, &argv, &error))
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{
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g_printerr ("%s: %s\n", argv[0], error->message);
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exit (1);
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}
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meta_plugin_type_register (gnome_shell_plugin_get_type ());
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/* Prevent meta_init() from causing gtk to load gail and at-bridge */
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g_setenv ("NO_GAIL", "1", TRUE);
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g_setenv ("NO_AT_BRIDGE", "1", TRUE);
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meta_init ();
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g_unsetenv ("NO_GAIL");
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g_unsetenv ("NO_AT_BRIDGE");
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/* FIXME: Add gjs API to set this stuff and don't depend on the
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* environment. These propagate to child processes.
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*/
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g_setenv ("GJS_DEBUG_OUTPUT", "stderr", TRUE);
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g_setenv ("GJS_DEBUG_TOPICS", "JS ERROR;JS LOG", TRUE);
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shell_dbus_init ();
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shell_a11y_init ();
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shell_fonts_init ();
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shell_perf_log_init ();
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shell_prefs_init ();
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gdk_event_handler_set (gnome_shell_gdk_event_handler, NULL, NULL);
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g_irepository_prepend_search_path (GNOME_SHELL_PKGLIBDIR);
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#if HAVE_BLUETOOTH
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g_irepository_prepend_search_path (BLUETOOTH_DIR);
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#endif
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/* Disable debug spew from various libraries */
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g_log_set_handler ("Gvc", G_LOG_LEVEL_DEBUG,
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muted_log_handler, NULL);
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g_log_set_handler ("GdmUser", G_LOG_LEVEL_DEBUG,
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muted_log_handler, NULL);
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g_log_set_handler ("Bluetooth", G_LOG_LEVEL_DEBUG | G_LOG_LEVEL_MESSAGE,
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muted_log_handler, NULL);
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/* Initialize the global object */
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shell_global_get ();
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return meta_run ();
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}
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