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5350302b09
gnome-shell/src/main.c
Giovanni Campagna 5350302b09 Port to new GDBus bindings in gjs 
Rewrite code acquiring dbus names so that it uses GDBus, and rewrite
ShellDBus so that it is exposed on the GDBus connection. Ports of
the other objects will follow.

https://bugzilla.gnome.org/show_bug.cgi?id=648651
2011-11-11 11:15:38 -05:00

611 lines
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include "config.h"
#ifdef HAVE_MALLINFO
#include <malloc.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <cogl-pango/cogl-pango.h>
#include <clutter/clutter.h>
#include <clutter/x11/clutter-x11.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <glib/gi18n-lib.h>
#include <girepository.h>
#include <meta/main.h>
#include <meta/meta-plugin.h>
#include <meta/prefs.h>
#include <telepathy-glib/debug.h>
#include <telepathy-glib/debug-sender.h>
#include "shell-a11y.h"
#include "shell-global.h"
#include "shell-global-private.h"
#include "shell-perf-log.h"
#include "st.h"
extern GType gnome_shell_plugin_get_type (void);
#define SHELL_DBUS_SERVICE "org.gnome.Shell"
#define MAGNIFIER_DBUS_SERVICE "org.gnome.Magnifier"
static gboolean is_gdm_mode = FALSE;
#define DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER 1
#define DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER 4
static void
shell_dbus_acquire_name (GDBusProxy *bus,
guint32 request_name_flags,
guint32 *request_name_result,
gchar *name,
gboolean fatal)
{
GError *error = NULL;
GVariant *request_name_variant;
if (!(request_name_variant = g_dbus_proxy_call_sync (bus,
"RequestName",
g_variant_new ("(su)", name, request_name_flags),
0, /* call flags */
-1, /* timeout */
NULL, /* cancellable */
&error)))
{
g_printerr ("failed to acquire org.gnome.Shell: %s\n", error->message);
exit (1);
}
g_variant_get (request_name_variant, "(u)", request_name_result);
}
static void
shell_dbus_acquire_names (GDBusProxy *bus,
guint32 request_name_flags,
gchar *name,
gboolean fatal, ...) G_GNUC_NULL_TERMINATED;
static void
shell_dbus_acquire_names (GDBusProxy *bus,
guint32 request_name_flags,
gchar *name,
gboolean fatal, ...)
{
va_list al;
guint32 request_name_result;
va_start (al, fatal);
for (;;)
{
shell_dbus_acquire_name (bus,
request_name_flags,
&request_name_result,
name, fatal);
name = va_arg (al, gchar *);
if (!name)
break;
fatal = va_arg (al, gboolean);
}
va_end (al);
}
static void
shell_dbus_init (gboolean replace)
{
GDBusConnection *session;
GDBusProxy *bus;
GError *error = NULL;
guint32 request_name_flags;
guint32 request_name_result;
session = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
if (error) {
g_printerr ("Failed to connect to session bus: %s", error->message);
exit (1);
}
bus = g_dbus_proxy_new_sync (session,
G_DBUS_PROXY_FLAGS_NONE,
NULL, /* interface info */
"org.freedesktop.DBus",
"/org/freedesktop/DBus",
"org.freedesktop.DBus",
NULL, /* cancellable */
&error);
request_name_flags = G_BUS_NAME_OWNER_FLAGS_ALLOW_REPLACEMENT;
if (replace)
request_name_flags |= DBUS_NAME_FLAG_REPLACE_EXISTING;
shell_dbus_acquire_name (bus,
request_name_flags,
&request_name_result,
SHELL_DBUS_SERVICE, TRUE);
if (!(request_name_result == DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER
|| request_name_result == DBUS_REQUEST_NAME_REPLY_ALREADY_OWNER))
{
g_printerr (SHELL_DBUS_SERVICE " already exists on bus and --replace not specified\n");
exit (1);
}
/*
* We always specify REPLACE_EXISTING to ensure we kill off
* the existing service if it was running.
*/
request_name_flags |= G_BUS_NAME_OWNER_FLAGS_REPLACE;
shell_dbus_acquire_names (bus,
request_name_flags,
/* Also grab org.gnome.Panel to replace any existing panel process */
"org.gnome.Panel", TRUE,
/* ...and the org.gnome.Magnifier service. */
MAGNIFIER_DBUS_SERVICE, FALSE,
/* ...and the org.freedesktop.Notifications service. */
"org.freedesktop.Notifications", FALSE,
NULL);
/* ...and the on-screen keyboard service */
shell_dbus_acquire_name (bus,
DBUS_NAME_FLAG_REPLACE_EXISTING,
&request_name_result,
"org.gnome.Caribou.Keyboard", FALSE);
g_object_unref (bus);
g_object_unref (session);
}
static void
constrain_tooltip (StTooltip *tooltip,
const ClutterGeometry *geometry,
ClutterGeometry *adjusted_geometry,
gpointer data)
{
const ClutterGeometry *tip_area = st_tooltip_get_tip_area (tooltip);
ShellGlobal *global = shell_global_get ();
MetaScreen *screen = shell_global_get_screen (global);
int n_monitors = meta_screen_get_n_monitors (screen);
int i;
*adjusted_geometry = *geometry;
/* A point that determines what screen we'll constrain to */
int x = tip_area->x + tip_area->width / 2;
int y = tip_area->y + tip_area->height / 2;
for (i = 0; i < n_monitors; i++)
{
MetaRectangle rect;
meta_screen_get_monitor_geometry (screen, i, &rect);
if (x >= rect.x && x < rect.x + rect.width &&
y >= rect.y && y < rect.y + rect.height)
{
if (adjusted_geometry->x + adjusted_geometry->width > rect.x + rect.width)
adjusted_geometry->x = rect.x + rect.width - adjusted_geometry->width;
if (adjusted_geometry->x < rect.x)
adjusted_geometry->x = rect.x;
if (adjusted_geometry->y + adjusted_geometry->height > rect.y + rect.height)
adjusted_geometry->y = rect.y + rect.height - adjusted_geometry->height;
if (adjusted_geometry->y < rect.y)
adjusted_geometry->y = rect.y;
return;
}
}
}
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;
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);
st_tooltip_set_constrain_func (stage, constrain_tooltip, NULL, NULL);
/* 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
shell_fonts_init (void)
{
GtkSettings *settings;
CoglPangoFontMap *fontmap;
/* 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.
*/
fontmap = COGL_PANGO_FONT_MAP (clutter_get_font_map ());
cogl_pango_font_map_set_use_mipmapping (fontmap, FALSE);
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);
}
static void
shell_prefs_init (void)
{
meta_prefs_override_preference_location ("/apps/mutter/general/attach_modal_dialogs",
"/desktop/gnome/shell/windows/attach_modal_dialogs");
meta_prefs_override_preference_location ("/apps/mutter/general/workspaces_only_on_primary",
"/desktop/gnome/shell/windows/workspaces_only_on_primary");
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");
}
/* 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
* => <this function>
* => 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_PRESS) ?
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
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
shell_perf_log_init (void)
{
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);
}
static void
muted_log_handler (const char *log_domain,
GLogLevelFlags log_level,
const char *message,
gpointer data)
{
/* Intentionally empty to discard message */
}
static void
default_log_handler (const char *log_domain,
GLogLevelFlags log_level,
const char *message,
gpointer data)
{
TpDebugSender *sender = data;
GTimeVal now;
g_get_current_time (&now);
tp_debug_sender_add_message (sender, &now, log_domain, log_level, message);
/* Filter out telepathy-glib logs, we don't want to flood Shell's output
* with those. */
if (!g_str_has_prefix (log_domain, "tp-glib"))
g_log_default_handler (log_domain, log_level, message, data);
}
static gboolean
print_version (const gchar *option_name,
const gchar *value,
gpointer data,
GError **error)
{
g_print ("GNOME Shell %s\n", VERSION);
exit (0);
}
GOptionEntry gnome_shell_options[] = {
{
"version", 0, G_OPTION_FLAG_NO_ARG, G_OPTION_ARG_CALLBACK,
print_version,
N_("Print version"),
NULL
},
{
"gdm-mode", 0, 0, G_OPTION_ARG_NONE,
&is_gdm_mode,
N_("Mode used by GDM for login screen"),
NULL
},
{ NULL }
};
int
main (int argc, char **argv)
{
GOptionContext *ctx;
GError *error = NULL;
ShellSessionType session_type;
int ecode;
TpDebugSender *sender;
g_type_init ();
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
textdomain (GETTEXT_PACKAGE);
ctx = meta_get_option_context ();
g_option_context_add_main_entries (ctx, gnome_shell_options, GETTEXT_PACKAGE);
if (!g_option_context_parse (ctx, &argc, &argv, &error))
{
g_printerr ("%s: %s\n", argv[0], error->message);
exit (1);
}
g_option_context_free (ctx);
meta_plugin_type_register (gnome_shell_plugin_get_type ());
/* Prevent meta_init() from causing gtk to load gail and at-bridge */
g_setenv ("NO_GAIL", "1", TRUE);
g_setenv ("NO_AT_BRIDGE", "1", TRUE);
meta_init ();
g_unsetenv ("NO_GAIL");
g_unsetenv ("NO_AT_BRIDGE");
/* FIXME: Add gjs API to set this stuff and don't depend on the
* environment. These propagate to child processes.
*/
g_setenv ("GJS_DEBUG_OUTPUT", "stderr", TRUE);
g_setenv ("GJS_DEBUG_TOPICS", "JS ERROR;JS LOG", TRUE);
shell_dbus_init (meta_get_replace_current_wm ());
shell_a11y_init ();
shell_fonts_init ();
shell_perf_log_init ();
shell_prefs_init ();
gdk_event_handler_set (gnome_shell_gdk_event_handler, NULL, NULL);
g_irepository_prepend_search_path (GNOME_SHELL_PKGLIBDIR);
#if HAVE_BLUETOOTH
g_irepository_prepend_search_path (BLUETOOTH_DIR);
#endif
/* Disable debug spew from various libraries */
g_log_set_handler ("Gvc", G_LOG_LEVEL_DEBUG,
muted_log_handler, NULL);
g_log_set_handler ("AccountsService", G_LOG_LEVEL_DEBUG,
muted_log_handler, NULL);
g_log_set_handler ("Bluetooth", G_LOG_LEVEL_DEBUG | G_LOG_LEVEL_MESSAGE,
muted_log_handler, NULL);
g_log_set_handler ("tp-glib/proxy", G_LOG_LEVEL_DEBUG,
muted_log_handler, NULL);
g_log_set_handler ("GnomeShellBrowserPlugin", G_LOG_LEVEL_DEBUG,
muted_log_handler, NULL);
/* Turn on telepathy-glib debugging but filter it out in
* default_log_handler. This handler also exposes all the logs over D-Bus
* using TpDebugSender. */
tp_debug_set_flags ("all");
sender = tp_debug_sender_dup ();
g_log_set_default_handler (default_log_handler, sender);
/* Initialize the global object */
if (is_gdm_mode)
session_type = SHELL_SESSION_GDM;
else
session_type = SHELL_SESSION_USER;
_shell_global_init ("session-type", session_type, NULL);
ecode = meta_run ();
if (g_getenv ("GNOME_SHELL_ENABLE_CLEANUP"))
{
g_printerr ("Doing final cleanup...\n");
g_object_unref (shell_global_get ());
}
g_object_unref (sender);
return ecode;
}
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