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gnome-shell/src/shell-global.c
Giovanni Campagna c58448817b ShellGlobal: use MetaCursorTracker to query the pointer position 
Gdk uses Xwayland, so it only sees the events we forward to X11
clients. Instead, we can use the abstraction API provided by
mutter and get the right value automatically.
Also, we need to use MetaCursorTracker to handle the cursor
visibility too.

https://bugzilla.gnome.org/show_bug.cgi?id=707467
2013-09-12 10:34:25 +02:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include "config.h"
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <math.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#include <locale.h>
#include <X11/extensions/Xfixes.h>
#include <canberra.h>
#include <canberra-gtk.h>
#include <clutter/glx/clutter-glx.h>
#include <clutter/x11/clutter-x11.h>
#include <gdk/gdkx.h>
#include <gio/gio.h>
#include <gjs/gjs-module.h>
#include <girepository.h>
#include <meta/display.h>
#include <meta/util.h>
#include <meta/meta-shaped-texture.h>
#include <meta/meta-cursor-tracker.h>
/* Memory report bits */
#ifdef HAVE_MALLINFO
#include <malloc.h>
#endif
#include "shell-enum-types.h"
#include "shell-global-private.h"
#include "shell-perf-log.h"
#include "shell-window-tracker.h"
#include "shell-wm.h"
#include "st.h"
static ShellGlobal *the_object = NULL;
static void grab_notify (GtkWidget *widget, gboolean is_grab, gpointer user_data);
static void shell_global_on_gc (GjsContext *context,
ShellGlobal *global);
struct _ShellGlobal {
GObject parent;
ClutterStage *stage;
Window stage_xwindow;
GdkWindow *ibus_window;
MetaDisplay *meta_display;
GdkDisplay *gdk_display;
Display *xdisplay;
MetaScreen *meta_screen;
GdkScreen *gdk_screen;
char *session_mode;
/* We use this window to get a notification from GTK+ when
* a widget in our process does a GTK+ grab. See
* http://bugzilla.gnome.org/show_bug.cgi?id=570641
*
* This window is never mapped or shown.
*/
GtkWindow *grab_notifier;
gboolean gtk_grab_active;
XserverRegion input_region;
GjsContext *js_context;
MetaPlugin *plugin;
ShellWM *wm;
GSettings *settings;
const char *datadir;
const char *imagedir;
const char *userdatadir;
StFocusManager *focus_manager;
GFile *runtime_state_path;
guint work_count;
GSList *leisure_closures;
guint leisure_function_id;
/* For sound notifications */
ca_context *sound_context;
guint32 xdnd_timestamp;
gint64 last_gc_end_time;
gboolean has_modal;
};
enum {
PROP_0,
PROP_SESSION_MODE,
PROP_SCREEN,
PROP_GDK_SCREEN,
PROP_DISPLAY,
PROP_SCREEN_WIDTH,
PROP_SCREEN_HEIGHT,
PROP_STAGE,
PROP_WINDOW_GROUP,
PROP_TOP_WINDOW_GROUP,
PROP_WINDOW_MANAGER,
PROP_SETTINGS,
PROP_DATADIR,
PROP_IMAGEDIR,
PROP_USERDATADIR,
PROP_FOCUS_MANAGER,
};
/* Signals */
enum
{
XDND_POSITION_CHANGED,
XDND_LEAVE,
XDND_ENTER,
NOTIFY_ERROR,
LAST_SIGNAL
};
G_DEFINE_TYPE(ShellGlobal, shell_global, G_TYPE_OBJECT);
static guint shell_global_signals [LAST_SIGNAL] = { 0 };
static void
shell_global_set_property(GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ShellGlobal *global = SHELL_GLOBAL (object);
switch (prop_id)
{
case PROP_SESSION_MODE:
g_clear_pointer (&global->session_mode, g_free);
global->session_mode = g_ascii_strdown (g_value_get_string (value), -1);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
shell_global_get_property(GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ShellGlobal *global = SHELL_GLOBAL (object);
switch (prop_id)
{
case PROP_SESSION_MODE:
g_value_set_string (value, shell_global_get_session_mode (global));
break;
case PROP_SCREEN:
g_value_set_object (value, global->meta_screen);
break;
case PROP_GDK_SCREEN:
g_value_set_object (value, global->gdk_screen);
break;
case PROP_DISPLAY:
g_value_set_object (value, global->meta_display);
break;
case PROP_SCREEN_WIDTH:
{
int width, height;
meta_screen_get_size (global->meta_screen, &width, &height);
g_value_set_int (value, width);
}
break;
case PROP_SCREEN_HEIGHT:
{
int width, height;
meta_screen_get_size (global->meta_screen, &width, &height);
g_value_set_int (value, height);
}
break;
case PROP_STAGE:
g_value_set_object (value, global->stage);
break;
case PROP_WINDOW_GROUP:
g_value_set_object (value, meta_get_window_group_for_screen (global->meta_screen));
break;
case PROP_TOP_WINDOW_GROUP:
g_value_set_object (value, meta_get_top_window_group_for_screen (global->meta_screen));
break;
case PROP_WINDOW_MANAGER:
g_value_set_object (value, global->wm);
break;
case PROP_SETTINGS:
g_value_set_object (value, global->settings);
break;
case PROP_DATADIR:
g_value_set_string (value, global->datadir);
break;
case PROP_IMAGEDIR:
g_value_set_string (value, global->imagedir);
break;
case PROP_USERDATADIR:
g_value_set_string (value, global->userdatadir);
break;
case PROP_FOCUS_MANAGER:
g_value_set_object (value, global->focus_manager);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
shell_global_init (ShellGlobal *global)
{
const char *datadir = g_getenv ("GNOME_SHELL_DATADIR");
const char *shell_js = g_getenv("GNOME_SHELL_JS");
char *imagedir, **search_path;
char *path;
const char *byteorder_string;
if (!datadir)
datadir = GNOME_SHELL_DATADIR;
global->datadir = datadir;
/* We make sure imagedir ends with a '/', since the JS won't have
* access to g_build_filename() and so will end up just
* concatenating global.imagedir to a filename.
*/
imagedir = g_build_filename (datadir, "images/", NULL);
if (g_file_test (imagedir, G_FILE_TEST_IS_DIR))
global->imagedir = imagedir;
else
{
g_free (imagedir);
global->imagedir = g_strdup_printf ("%s/", datadir);
}
/* Ensure config dir exists for later use */
global->userdatadir = g_build_filename (g_get_user_data_dir (), "gnome-shell", NULL);
g_mkdir_with_parents (global->userdatadir, 0700);
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
byteorder_string = "LE";
#else
byteorder_string = "BE";
#endif
/* And the runtime state */
path = g_strdup_printf ("%s/gnome-shell/runtime-state-%s.%s",
g_get_user_runtime_dir (),
byteorder_string,
XDisplayName (NULL));
(void) g_mkdir_with_parents (path, 0700);
global->runtime_state_path = g_file_new_for_path (path);
global->settings = g_settings_new ("org.gnome.shell");
global->grab_notifier = GTK_WINDOW (gtk_window_new (GTK_WINDOW_TOPLEVEL));
g_signal_connect (global->grab_notifier, "grab-notify", G_CALLBACK (grab_notify), global);
global->gtk_grab_active = FALSE;
global->sound_context = ca_gtk_context_get ();
ca_context_change_props (global->sound_context,
CA_PROP_APPLICATION_NAME, "GNOME Shell",
CA_PROP_APPLICATION_ID, "org.gnome.Shell",
CA_PROP_APPLICATION_ICON_NAME, "start-here",
CA_PROP_APPLICATION_LANGUAGE, setlocale (LC_MESSAGES, NULL),
NULL);
ca_context_open (global->sound_context);
if (!shell_js)
shell_js = JSDIR;
search_path = g_strsplit (shell_js, ":", -1);
global->js_context = g_object_new (GJS_TYPE_CONTEXT,
"search-path", search_path,
"js-version", "1.8",
"gc-notifications", TRUE,
NULL);
g_signal_connect (global->js_context, "gc", G_CALLBACK (shell_global_on_gc), global);
g_strfreev (search_path);
}
static void
shell_global_finalize (GObject *object)
{
ShellGlobal *global = SHELL_GLOBAL (object);
g_object_unref (global->js_context);
gtk_widget_destroy (GTK_WIDGET (global->grab_notifier));
g_object_unref (global->settings);
the_object = NULL;
g_clear_object (&global->runtime_state_path);
G_OBJECT_CLASS(shell_global_parent_class)->finalize (object);
}
static void
shell_global_class_init (ShellGlobalClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = shell_global_get_property;
gobject_class->set_property = shell_global_set_property;
gobject_class->finalize = shell_global_finalize;
/* Emitted from gnome-shell-plugin.c during event handling */
shell_global_signals[XDND_POSITION_CHANGED] =
g_signal_new ("xdnd-position-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 2, G_TYPE_INT, G_TYPE_INT);
/* Emitted from gnome-shell-plugin.c during event handling */
shell_global_signals[XDND_LEAVE] =
g_signal_new ("xdnd-leave",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
/* Emitted from gnome-shell-plugin.c during event handling */
shell_global_signals[XDND_ENTER] =
g_signal_new ("xdnd-enter",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
shell_global_signals[NOTIFY_ERROR] =
g_signal_new ("notify-error",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 2,
G_TYPE_STRING,
G_TYPE_STRING);
g_object_class_install_property (gobject_class,
PROP_SESSION_MODE,
g_param_spec_string ("session-mode",
"Session Mode",
"The session mode to use",
"user",
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (gobject_class,
PROP_SCREEN,
g_param_spec_object ("screen",
"Screen",
"Metacity screen object for the shell",
META_TYPE_SCREEN,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_GDK_SCREEN,
g_param_spec_object ("gdk-screen",
"GdkScreen",
"Gdk screen object for the shell",
GDK_TYPE_SCREEN,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_SCREEN_WIDTH,
g_param_spec_int ("screen-width",
"Screen Width",
"Screen width, in pixels",
0, G_MAXINT, 1,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_SCREEN_HEIGHT,
g_param_spec_int ("screen-height",
"Screen Height",
"Screen height, in pixels",
0, G_MAXINT, 1,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_DISPLAY,
g_param_spec_object ("display",
"Display",
"Metacity display object for the shell",
META_TYPE_DISPLAY,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_STAGE,
g_param_spec_object ("stage",
"Stage",
"Stage holding the desktop scene graph",
CLUTTER_TYPE_ACTOR,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_WINDOW_GROUP,
g_param_spec_object ("window-group",
"Window Group",
"Actor holding window actors",
CLUTTER_TYPE_ACTOR,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_TOP_WINDOW_GROUP,
g_param_spec_object ("top-window-group",
"Top Window Group",
"Actor holding override-redirect windows",
CLUTTER_TYPE_ACTOR,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_WINDOW_MANAGER,
g_param_spec_object ("window-manager",
"Window Manager",
"Window management interface",
SHELL_TYPE_WM,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_SETTINGS,
g_param_spec_object ("settings",
"Settings",
"GSettings instance for gnome-shell configuration",
G_TYPE_SETTINGS,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_DATADIR,
g_param_spec_string ("datadir",
"Data directory",
"Directory containing gnome-shell data files",
NULL,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_IMAGEDIR,
g_param_spec_string ("imagedir",
"Image directory",
"Directory containing gnome-shell image files",
NULL,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_USERDATADIR,
g_param_spec_string ("userdatadir",
"User data directory",
"Directory containing gnome-shell user data",
NULL,
G_PARAM_READABLE));
g_object_class_install_property (gobject_class,
PROP_FOCUS_MANAGER,
g_param_spec_object ("focus-manager",
"Focus manager",
"The shell's StFocusManager",
ST_TYPE_FOCUS_MANAGER,
G_PARAM_READABLE));
}
/**•
* _shell_global_init: (skip)•
* @first_property_name: the name of the first property
* @...: the value of the first property, followed optionally by more
* name/value pairs, followed by %NULL
*•
* Initializes the shell global singleton with the construction-time
* properties.
*
* There are currently no such properties, so @first_property_name should
* always be %NULL.
*
* This call must be called before shell_global_get() and shouldn't be called
* more than once.
*/
void
_shell_global_init (const char *first_property_name,
...)
{
va_list argument_list;
g_return_if_fail (the_object == NULL);
va_start (argument_list, first_property_name);
the_object = SHELL_GLOBAL (g_object_new_valist (SHELL_TYPE_GLOBAL,
first_property_name,
argument_list));
va_end (argument_list);
}
/**
* shell_global_get:
*
* Gets the singleton global object that represents the desktop.
*
* Return value: (transfer none): the singleton global object
*/
ShellGlobal *
shell_global_get (void)
{
return the_object;
}
static guint32
get_current_time_maybe_roundtrip (ShellGlobal *global)
{
guint32 time;
time = shell_global_get_current_time (global);
if (time != CurrentTime)
return time;
return meta_display_get_current_time_roundtrip (global->meta_display);
}
static void
focus_window_changed (MetaDisplay *display,
GParamSpec *param,
gpointer user_data)
{
ShellGlobal *global = user_data;
if (global->has_modal)
return;
/* If the stage window became unfocused, drop the key focus
* on Clutter's side. */
if (!meta_stage_is_focused (global->meta_screen))
clutter_stage_set_key_focus (global->stage, NULL);
}
static ClutterActor *
get_key_focused_actor (ShellGlobal *global)
{
ClutterActor *actor;
actor = clutter_stage_get_key_focus (global->stage);
/* If there's no explicit key focus, clutter_stage_get_key_focus()
* returns the stage. This is a terrible API. */
if (actor == CLUTTER_ACTOR (global->stage))
actor = NULL;
return actor;
}
static void
sync_stage_window_focus (ShellGlobal *global)
{
ClutterActor *actor;
if (global->has_modal)
return;
actor = get_key_focused_actor (global);
/* An actor got key focus and the stage needs to be focused. */
if (actor != NULL && !meta_stage_is_focused (global->meta_screen))
meta_focus_stage_window (global->meta_screen,
get_current_time_maybe_roundtrip (global));
/* An actor dropped key focus. Focus the default window. */
else if (actor == NULL && meta_stage_is_focused (global->meta_screen))
meta_screen_focus_default_window (global->meta_screen,
get_current_time_maybe_roundtrip (global));
}
static void
focus_actor_changed (ClutterStage *stage,
GParamSpec *param,
gpointer user_data)
{
ShellGlobal *global = user_data;
sync_stage_window_focus (global);
}
static void
sync_input_region (ShellGlobal *global)
{
MetaScreen *screen = global->meta_screen;
if (global->gtk_grab_active)
meta_empty_stage_input_region (screen);
else if (global->has_modal)
meta_set_stage_input_region (screen, None);
else
meta_set_stage_input_region (screen, global->input_region);
}
/**
* shell_global_set_stage_input_region:
* @global: the #ShellGlobal
* @rectangles: (element-type Meta.Rectangle): a list of #MetaRectangle
* describing the input region.
*
* Sets the area of the stage that is responsive to mouse clicks when
* we don't have a modal or grab.
*/
void
shell_global_set_stage_input_region (ShellGlobal *global,
GSList *rectangles)
{
MetaRectangle *rect;
XRectangle *rects;
int nrects, i;
GSList *r;
g_return_if_fail (SHELL_IS_GLOBAL (global));
nrects = g_slist_length (rectangles);
rects = g_new (XRectangle, nrects);
for (r = rectangles, i = 0; r; r = r->next, i++)
{
rect = (MetaRectangle *)r->data;
rects[i].x = rect->x;
rects[i].y = rect->y;
rects[i].width = rect->width;
rects[i].height = rect->height;
}
if (global->input_region)
XFixesDestroyRegion (global->xdisplay, global->input_region);
global->input_region = XFixesCreateRegion (global->xdisplay, rects, nrects);
g_free (rects);
sync_input_region (global);
}
/**
* shell_global_get_stage:
*
* Return value: (transfer none): The default #ClutterStage
*/
ClutterStage *
shell_global_get_stage (ShellGlobal *global)
{
return global->stage;
}
/**
* shell_global_get_screen:
*
* Return value: (transfer none): The default #MetaScreen
*/
MetaScreen *
shell_global_get_screen (ShellGlobal *global)
{
return global->meta_screen;
}
/**
* shell_global_get_gdk_screen:
*
* Return value: (transfer none): Gdk screen object for the shell
*/
GdkScreen *
shell_global_get_gdk_screen (ShellGlobal *global)
{
g_return_val_if_fail (SHELL_IS_GLOBAL (global), NULL);
return global->gdk_screen;
}
/**
* shell_global_get_display:
*
* Return value: (transfer none): The default #MetaDisplay
*/
MetaDisplay *
shell_global_get_display (ShellGlobal *global)
{
return global->meta_display;
}
/**
* shell_global_get_window_actors:
*
* Gets the list of #MetaWindowActor for the plugin's screen
*
* Return value: (element-type Meta.WindowActor) (transfer none): the list of windows
*/
GList *
shell_global_get_window_actors (ShellGlobal *global)
{
g_return_val_if_fail (SHELL_IS_GLOBAL (global), NULL);
return meta_get_window_actors (global->meta_screen);
}
static void
global_stage_notify_width (GObject *gobject,
GParamSpec *pspec,
gpointer data)
{
ShellGlobal *global = SHELL_GLOBAL (data);
g_object_notify (G_OBJECT (global), "screen-width");
}
static void
global_stage_notify_height (GObject *gobject,
GParamSpec *pspec,
gpointer data)
{
ShellGlobal *global = SHELL_GLOBAL (data);
g_object_notify (G_OBJECT (global), "screen-height");
}
static gboolean
global_stage_before_paint (gpointer data)
{
shell_perf_log_event (shell_perf_log_get_default (),
"clutter.stagePaintStart");
return TRUE;
}
static gboolean
global_stage_after_paint (gpointer data)
{
shell_perf_log_event (shell_perf_log_get_default (),
"clutter.stagePaintDone");
return TRUE;
}
/* 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)
{
ShellGlobal *global = data;
if (event_gdk->key.window == global->ibus_window)
{
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 (global->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
entry_cursor_func (StEntry *entry,
gboolean use_ibeam,
gpointer user_data)
{
ShellGlobal *global = user_data;
meta_screen_set_cursor (global->meta_screen, use_ibeam ? META_CURSOR_IBEAM : META_CURSOR_DEFAULT);
}
void
_shell_global_set_plugin (ShellGlobal *global,
MetaPlugin *plugin)
{
g_return_if_fail (SHELL_IS_GLOBAL (global));
g_return_if_fail (global->plugin == NULL);
global->plugin = plugin;
global->wm = shell_wm_new (plugin);
global->meta_screen = meta_plugin_get_screen (plugin);
global->meta_display = meta_screen_get_display (global->meta_screen);
global->xdisplay = meta_display_get_xdisplay (global->meta_display);
global->gdk_display = gdk_x11_lookup_xdisplay (global->xdisplay);
global->gdk_screen = gdk_display_get_screen (global->gdk_display,
meta_screen_get_screen_number (global->meta_screen));
global->stage = CLUTTER_STAGE (meta_get_stage_for_screen (global->meta_screen));
#ifdef HAVE_WAYLAND
if (meta_is_wayland_compositor ())
{
/* When Mutter is acting as its own display server then the
stage does not have a window, so create a different window
which we use to communicate with IBus, and leave stage_xwindow
as None.
*/
GdkWindowAttr attributes;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.width = 100;
attributes.height = 100;
attributes.window_type = GDK_WINDOW_TOPLEVEL;
global->ibus_window = gdk_window_new (NULL,
&attributes,
0 /* attributes_mask */);
global->stage_xwindow = None;
}
else
#endif
{
global->stage_xwindow = clutter_x11_get_stage_window (global->stage);
global->ibus_window = gdk_x11_window_foreign_new_for_display (global->gdk_display,
global->stage_xwindow);
}
st_im_text_set_event_window (global->ibus_window);
st_entry_set_cursor_func (entry_cursor_func, global);
g_signal_connect (global->stage, "notify::width",
G_CALLBACK (global_stage_notify_width), global);
g_signal_connect (global->stage, "notify::height",
G_CALLBACK (global_stage_notify_height), global);
clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_PRE_PAINT,
global_stage_before_paint,
NULL, NULL);
clutter_threads_add_repaint_func_full (CLUTTER_REPAINT_FLAGS_POST_PAINT,
global_stage_after_paint,
NULL, NULL);
shell_perf_log_define_event (shell_perf_log_get_default(),
"clutter.stagePaintStart",
"Start of stage page repaint",
"");
shell_perf_log_define_event (shell_perf_log_get_default(),
"clutter.stagePaintDone",
"End of stage page repaint",
"");
g_signal_connect (global->stage, "notify::key-focus",
G_CALLBACK (focus_actor_changed), global);
g_signal_connect (global->meta_display, "notify::focus-window",
G_CALLBACK (focus_window_changed), global);
gdk_event_handler_set (gnome_shell_gdk_event_handler, global, NULL);
global->focus_manager = st_focus_manager_get_for_stage (global->stage);
}
GjsContext *
_shell_global_get_gjs_context (ShellGlobal *global)
{
return global->js_context;
}
/**
* shell_global_begin_modal:
* @global: a #ShellGlobal
*
* Grabs the keyboard and mouse to the stage window. The stage will
* receive all keyboard and mouse events until shell_global_end_modal()
* is called. This is used to implement "modes" for the shell, such as the
* overview mode or the "looking glass" debug overlay, that block
* application and normal key shortcuts.
*
* Returns: %TRUE if we succesfully entered the mode. %FALSE if we couldn't
* enter the mode. Failure may occur because an application has the pointer
* or keyboard grabbed, because Mutter is in a mode itself like moving a
* window or alt-Tab window selection, or because shell_global_begin_modal()
* was previouly called.
*/
gboolean
shell_global_begin_modal (ShellGlobal *global,
guint32 timestamp,
MetaModalOptions options)
{
/* Make it an error to call begin_modal while we already
* have a modal active. */
if (global->has_modal)
return FALSE;
global->has_modal = meta_plugin_begin_modal (global->plugin, options, timestamp);
sync_input_region (global);
return global->has_modal;
}
/**
* shell_global_end_modal:
* @global: a #ShellGlobal
*
* Undoes the effect of shell_global_begin_modal().
*/
void
shell_global_end_modal (ShellGlobal *global,
guint32 timestamp)
{
if (!global->has_modal)
return;
meta_plugin_end_modal (global->plugin, timestamp);
global->has_modal = FALSE;
/* If the stage window is unfocused, ensure that there's no
* actor focused on Clutter's side. */
if (!meta_stage_is_focused (global->meta_screen))
clutter_stage_set_key_focus (global->stage, NULL);
/* An actor dropped key focus. Focus the default window. */
else if (get_key_focused_actor (global) && meta_stage_is_focused (global->meta_screen))
meta_screen_focus_default_window (global->meta_screen,
get_current_time_maybe_roundtrip (global));
sync_input_region (global);
}
void
shell_global_freeze_keyboard (ShellGlobal *global,
guint32 timestamp)
{
if (global->stage_xwindow != None)
meta_display_freeze_keyboard (global->meta_display, global->stage_xwindow, timestamp);
}
/* Code to close all file descriptors before we exec; copied from gspawn.c in GLib.
*
* Authors: Padraig O'Briain, Matthias Clasen, Lennart Poettering
*
* http://bugzilla.gnome.org/show_bug.cgi?id=469231
* http://bugzilla.gnome.org/show_bug.cgi?id=357585
*/
static int
set_cloexec (void *data, gint fd)
{
if (fd >= GPOINTER_TO_INT (data))
fcntl (fd, F_SETFD, FD_CLOEXEC);
return 0;
}
#ifndef HAVE_FDWALK
static int
fdwalk (int (*cb)(void *data, int fd), void *data)
{
gint open_max;
gint fd;
gint res = 0;
#ifdef HAVE_SYS_RESOURCE_H
struct rlimit rl;
#endif
#ifdef __linux__
DIR *d;
if ((d = opendir("/proc/self/fd"))) {
struct dirent *de;
while ((de = readdir(d))) {
glong l;
gchar *e = NULL;
if (de->d_name[0] == '.')
continue;
errno = 0;
l = strtol(de->d_name, &e, 10);
if (errno != 0 || !e || *e)
continue;
fd = (gint) l;
if ((glong) fd != l)
continue;
if (fd == dirfd(d))
continue;
if ((res = cb (data, fd)) != 0)
break;
}
closedir(d);
return res;
}
/* If /proc is not mounted or not accessible we fall back to the old
* rlimit trick */
#endif
#ifdef HAVE_SYS_RESOURCE_H
if (getrlimit(RLIMIT_NOFILE, &rl) == 0 && rl.rlim_max != RLIM_INFINITY)
open_max = rl.rlim_max;
else
#endif
open_max = sysconf (_SC_OPEN_MAX);
for (fd = 0; fd < open_max; fd++)
if ((res = cb (data, fd)) != 0)
break;
return res;
}
#endif
static void
pre_exec_close_fds(void)
{
fdwalk (set_cloexec, GINT_TO_POINTER(3));
}
/**
* shell_global_reexec_self:
* @global: A #ShellGlobal
*
* Restart the current process. Only intended for development purposes.
*/
void
shell_global_reexec_self (ShellGlobal *global)
{
GPtrArray *arr;
gsize len;
char *buf;
char *buf_p;
char *buf_end;
GError *error = NULL;
/* Linux specific (I think, anyways). */
if (!g_file_get_contents ("/proc/self/cmdline", &buf, &len, &error))
{
g_warning ("failed to get /proc/self/cmdline: %s", error->message);
return;
}
buf_end = buf+len;
arr = g_ptr_array_new ();
/* The cmdline file is NUL-separated */
for (buf_p = buf; buf_p < buf_end; buf_p = buf_p + strlen (buf_p) + 1)
g_ptr_array_add (arr, buf_p);
g_ptr_array_add (arr, NULL);
/* Close all file descriptors other than stdin/stdout/stderr, otherwise
* they will leak and stay open after the exec. In particular, this is
* important for file descriptors that represent mapped graphics buffer
* objects.
*/
pre_exec_close_fds ();
meta_display_unmanage_screen (shell_global_get_display (global),
shell_global_get_screen (global),
shell_global_get_current_time (global));
execvp (arr->pdata[0], (char**)arr->pdata);
g_warning ("failed to reexec: %s", g_strerror (errno));
g_ptr_array_free (arr, TRUE);
}
static void
shell_global_on_gc (GjsContext *context,
ShellGlobal *global)
{
global->last_gc_end_time = g_get_monotonic_time ();
}
/**
* shell_global_get_memory_info:
* @global:
* @meminfo: (out caller-allocates): Output location for memory information
*
* Load process-global data about memory usage.
*/
void
shell_global_get_memory_info (ShellGlobal *global,
ShellMemoryInfo *meminfo)
{
JSContext *context;
gint64 now;
#ifdef HAVE_MALLINFO
{
struct mallinfo info = mallinfo ();
meminfo->glibc_uordblks = info.uordblks;
}
#else
meminfo->glibc_uordblks = 0;
#endif
context = gjs_context_get_native_context (global->js_context);
meminfo->js_bytes = JS_GetGCParameter (JS_GetRuntime (context), JSGC_BYTES);
meminfo->gjs_boxed = (unsigned int) gjs_counter_boxed.value;
meminfo->gjs_gobject = (unsigned int) gjs_counter_object.value;
meminfo->gjs_function = (unsigned int) gjs_counter_function.value;
meminfo->gjs_closure = (unsigned int) gjs_counter_closure.value;
now = g_get_monotonic_time ();
meminfo->last_gc_seconds_ago = (now - global->last_gc_end_time) / G_TIME_SPAN_SECOND;
}
/**
* shell_global_notify_error:
* @global: a #ShellGlobal
* @msg: Error message
* @details: Error details
*
* Show a system error notification. Use this function
* when a user-initiated action results in a non-fatal problem
* from causes that may not be under system control. For
* example, an application crash.
*/
void
shell_global_notify_error (ShellGlobal *global,
const char *msg,
const char *details)
{
g_signal_emit_by_name (global, "notify-error", msg, details);
}
static void
grab_notify (GtkWidget *widget, gboolean was_grabbed, gpointer user_data)
{
ShellGlobal *global = SHELL_GLOBAL (user_data);
global->gtk_grab_active = !was_grabbed;
/* Update for the new setting of gtk_grab_active */
sync_input_region (global);
}
/**
* shell_global_init_xdnd:
* @global: the #ShellGlobal
*
* Enables tracking of Xdnd events
*/
void shell_global_init_xdnd (ShellGlobal *global)
{
Window output_window = meta_get_overlay_window (global->meta_screen);
long xdnd_version = 5;
XChangeProperty (global->xdisplay, global->stage_xwindow,
gdk_x11_get_xatom_by_name ("XdndAware"), XA_ATOM,
32, PropModeReplace, (const unsigned char *)&xdnd_version, 1);
XChangeProperty (global->xdisplay, output_window,
gdk_x11_get_xatom_by_name ("XdndProxy"), XA_WINDOW,
32, PropModeReplace, (const unsigned char *)&global->stage_xwindow, 1);
/*
* XdndProxy is additionally set on the proxy window as verification that the
* XdndProxy property on the target window isn't a left-over
*/
XChangeProperty (global->xdisplay, global->stage_xwindow,
gdk_x11_get_xatom_by_name ("XdndProxy"), XA_WINDOW,
32, PropModeReplace, (const unsigned char *)&global->stage_xwindow, 1);
}
/**
* shell_global_get_pointer:
* @global: the #ShellGlobal
* @x: (out): the X coordinate of the pointer, in global coordinates
* @y: (out): the Y coordinate of the pointer, in global coordinates
* @mods: (out): the current set of modifier keys that are pressed down
*
* Gets the pointer coordinates and current modifier key state.
*/
void
shell_global_get_pointer (ShellGlobal *global,
int *x,
int *y,
ClutterModifierType *mods)
{
ClutterModifierType raw_mods;
MetaCursorTracker *tracker;
tracker = meta_cursor_tracker_get_for_screen (global->meta_screen);
meta_cursor_tracker_get_pointer (tracker, x, y, &raw_mods);
*mods = raw_mods & CLUTTER_MODIFIER_MASK;
}
/**
* shell_global_sync_pointer:
* @global: the #ShellGlobal
*
* Ensures that clutter is aware of the current pointer position,
* causing enter and leave events to be emitted if the pointer moved
* behind our back (ie, during a pointer grab).
*/
void
shell_global_sync_pointer (ShellGlobal *global)
{
int x, y;
ClutterModifierType mods;
ClutterMotionEvent event;
shell_global_get_pointer (global, &x, &y, &mods);
event.type = CLUTTER_MOTION;
event.time = shell_global_get_current_time (global);
event.flags = 0;
event.stage = global->stage;
event.x = x;
event.y = y;
event.modifier_state = mods;
event.axes = NULL;
event.device = clutter_device_manager_get_core_device (clutter_device_manager_get_default (),
CLUTTER_POINTER_DEVICE);
/* Leaving event.source NULL will force clutter to look it up, which
* will generate enter/leave events as a side effect, if they are
* needed. We need a better way to do this though... see
* http://bugzilla.clutter-project.org/show_bug.cgi?id=2615.
*/
event.source = NULL;
clutter_event_put ((ClutterEvent *)&event);
}
/**
* shell_global_get_settings:
* @global: A #ShellGlobal
*
* Get the global GSettings instance.
*
* Return value: (transfer none): The GSettings object
*/
GSettings *
shell_global_get_settings (ShellGlobal *global)
{
return global->settings;
}
/**
* shell_global_get_current_time:
* @global: A #ShellGlobal
*
* Returns: the current X server time from the current Clutter, Gdk, or X
* event. If called from outside an event handler, this may return
* %Clutter.CURRENT_TIME (aka 0), or it may return a slightly
* out-of-date timestamp.
*/
guint32
shell_global_get_current_time (ShellGlobal *global)
{
guint32 time;
/* In case we have a xdnd timestamp use it */
if (global->xdnd_timestamp != 0)
return global->xdnd_timestamp;
/* meta_display_get_current_time() will return the correct time
when handling an X or Gdk event, but will return CurrentTime
from some Clutter event callbacks.
clutter_get_current_event_time() will return the correct time
from a Clutter event callback, but may return CLUTTER_CURRENT_TIME
timestamp if called at other times.
So we try meta_display_get_current_time() first, since we
can recognize a "wrong" answer from that, and then fall back
to clutter_get_current_event_time().
*/
time = meta_display_get_current_time (global->meta_display);
if (time != CLUTTER_CURRENT_TIME)
return time;
return clutter_get_current_event_time ();
}
/**
* shell_global_create_app_launch_context:
* @global: A #ShellGlobal
*
* Create a #GAppLaunchContext set up with the correct timestamp, and
* targeted to activate on the current workspace.
*
* Return value: (transfer full): A new #GAppLaunchContext
*/
GAppLaunchContext *
shell_global_create_app_launch_context (ShellGlobal *global)
{
GdkAppLaunchContext *context;
context = gdk_display_get_app_launch_context (global->gdk_display);
gdk_app_launch_context_set_timestamp (context, shell_global_get_current_time (global));
// Make sure that the app is opened on the current workspace even if
// the user switches before it starts
gdk_app_launch_context_set_desktop (context, meta_screen_get_active_workspace_index (global->meta_screen));
return (GAppLaunchContext *)context;
}
typedef struct
{
ShellLeisureFunction func;
gpointer user_data;
GDestroyNotify notify;
} LeisureClosure;
static gboolean
run_leisure_functions (gpointer data)
{
ShellGlobal *global = data;
GSList *closures;
GSList *iter;
global->leisure_function_id = 0;
/* We started more work since we scheduled the idle */
if (global->work_count > 0)
return FALSE;
/* No leisure closures, so we are done */
if (global->leisure_closures == NULL)
return FALSE;
closures = global->leisure_closures;
global->leisure_closures = NULL;
for (iter = closures; iter; iter = iter->next)
{
LeisureClosure *closure = closures->data;
closure->func (closure->user_data);
if (closure->notify)
closure->notify (closure->user_data);
g_slice_free (LeisureClosure, closure);
}
g_slist_free (closures);
return FALSE;
}
static void
schedule_leisure_functions (ShellGlobal *global)
{
/* This is called when we think we are ready to run leisure functions
* by our own accounting. We try to handle other types of business
* (like ClutterAnimation) by adding a low priority idle function.
*
* This won't work properly if the mainloop goes idle waiting for
* the vertical blanking interval or waiting for work being done
* in another thread.
*/
if (!global->leisure_function_id)
global->leisure_function_id = g_idle_add_full (G_PRIORITY_LOW,
run_leisure_functions,
global, NULL);
}
/**
* shell_global_begin_work:
* @global: the #ShellGlobal
*
* Marks that we are currently doing work. This is used to to track
* whether we are busy for the purposes of shell_global_run_at_leisure().
* A count is kept and shell_global_end_work() must be called exactly
* as many times as shell_global_begin_work().
*/
void
shell_global_begin_work (ShellGlobal *global)
{
global->work_count++;
}
/**
* shell_global_end_work:
* @global: the #ShellGlobal
*
* Marks the end of work that we started with shell_global_begin_work().
* If no other work is ongoing and functions have been added with
* shell_global_run_at_leisure(), they will be run at the next
* opportunity.
*/
void
shell_global_end_work (ShellGlobal *global)
{
g_return_if_fail (global->work_count > 0);
global->work_count--;
if (global->work_count == 0)
schedule_leisure_functions (global);
}
/**
* shell_global_run_at_leisure:
* @global: the #ShellGlobal
* @func: function to call at leisure
* @user_data: data to pass to @func
* @notify: function to call to free @user_data
*
* Schedules a function to be called the next time the shell is idle.
* Idle means here no animations, no redrawing, and no ongoing background
* work. Since there is currently no way to hook into the Clutter master
* clock and know when is running, the implementation here is somewhat
* approximation. Animations done through the shell's Tweener module will
* be handled properly, but other animations may be detected as terminating
* early if they can be drawn fast enough so that the event loop goes idle
* between frames.
*
* The intent of this function is for performance measurement runs
* where a number of actions should be run serially and each action is
* timed individually. Using this function for other purposes will
* interfere with the ability to use it for performance measurement so
* should be avoided.
*/
void
shell_global_run_at_leisure (ShellGlobal *global,
ShellLeisureFunction func,
gpointer user_data,
GDestroyNotify notify)
{
LeisureClosure *closure = g_slice_new (LeisureClosure);
closure->func = func;
closure->user_data = user_data;
closure->notify = notify;
global->leisure_closures = g_slist_append (global->leisure_closures,
closure);
if (global->work_count == 0)
schedule_leisure_functions (global);
}
static void
build_ca_proplist_for_event (ca_proplist *props,
const char *event_property,
const char *event_id,
const char *event_description,
ClutterEvent *for_event)
{
ca_proplist_sets (props, event_property, event_id);
ca_proplist_sets (props, CA_PROP_EVENT_DESCRIPTION, event_description);
ca_proplist_sets (props, CA_PROP_CANBERRA_CACHE_CONTROL, "volatile");
if (for_event)
{
if (clutter_event_type (for_event) != CLUTTER_KEY_PRESS &&
clutter_event_type (for_event) != CLUTTER_KEY_RELEASE)
{
ClutterPoint point;
clutter_event_get_position (for_event, &point);
ca_proplist_setf (props, CA_PROP_EVENT_MOUSE_X, "%d", (int)point.x);
ca_proplist_setf (props, CA_PROP_EVENT_MOUSE_Y, "%d", (int)point.y);
}
if (clutter_event_type (for_event) == CLUTTER_BUTTON_PRESS ||
clutter_event_type (for_event) == CLUTTER_BUTTON_RELEASE)
{
gint button;
button = clutter_event_get_button (for_event);
ca_proplist_setf (props, CA_PROP_EVENT_MOUSE_BUTTON, "%d", button);
}
}
}
/**
* shell_global_play_theme_sound:
* @global: the #ShellGlobal
* @id: an id, used to cancel later (0 if not needed)
* @name: the sound name
* @for_event: (allow-none): a #ClutterEvent in response to which the sound is played
*
* Plays a simple sound picked according to Freedesktop sound theme.
* Really just a workaround for libcanberra not being introspected.
*/
void
shell_global_play_theme_sound (ShellGlobal *global,
guint id,
const char *name,
const char *description,
ClutterEvent *for_event)
{
ca_proplist *props;
ca_proplist_create (&props);
build_ca_proplist_for_event (props, CA_PROP_EVENT_ID, name, description, for_event);
ca_context_play_full (global->sound_context, id, props, NULL, NULL);
ca_proplist_destroy (props);
}
/**
* shell_global_play_theme_sound_full:
* @global: the #ShellGlobal
* @id: an id, used to cancel later (0 if not needed)
* @name: the sound name
* @description: the localized description of the event that triggered this alert
* @for_event: (allow-none): a #ClutterEvent in response to which the sound is played
* @application_id: application on behalf of which the sound is played
* @application_name:
*
* Plays a simple sound picked according to Freedesktop sound theme.
* Really just a workaround for libcanberra not being introspected.
*/
void
shell_global_play_theme_sound_full (ShellGlobal *global,
guint id,
const char *name,
const char *description,
ClutterEvent *for_event,
const char *application_id,
const char *application_name)
{
ca_proplist *props;
ca_proplist_create (&props);
build_ca_proplist_for_event (props, CA_PROP_EVENT_ID, name, description, for_event);
ca_proplist_sets (props, CA_PROP_APPLICATION_ID, application_id);
ca_proplist_sets (props, CA_PROP_APPLICATION_NAME, application_name);
ca_context_play_full (global->sound_context, id, props, NULL, NULL);
ca_proplist_destroy (props);
}
/**
* shell_global_play_sound_file_full:
* @global: the #ShellGlobal
* @id: an id, used to cancel later (0 if not needed)
* @file_name: the file name to play
* @description: the localized description of the event that triggered this alert
* @for_event: (allow-none): a #ClutterEvent in response to which the sound is played
* @application_id: application on behalf of which the sound is played
* @application_name:
*
* Like shell_global_play_theme_sound_full(), but with an explicit path
* instead of a themed sound.
*/
void
shell_global_play_sound_file_full (ShellGlobal *global,
guint id,
const char *file_name,
const char *description,
ClutterEvent *for_event,
const char *application_id,
const char *application_name)
{
ca_proplist *props;
ca_proplist_create (&props);
build_ca_proplist_for_event (props, CA_PROP_MEDIA_FILENAME, file_name, description, for_event);
ca_proplist_sets (props, CA_PROP_APPLICATION_ID, application_id);
ca_proplist_sets (props, CA_PROP_APPLICATION_NAME, application_name);
ca_context_play_full (global->sound_context, id, props, NULL, NULL);
ca_proplist_destroy (props);
}
/**
* shell_global_play_sound_file:
* @global: the #ShellGlobal
* @id: an id, used to cancel later (0 if not needed)
* @file_name: the file name to play
* @description: the localized description of the event that triggered this alert
* @for_event: (allow-none): a #ClutterEvent in response to which the sound is played
*
* Like shell_global_play_theme_sound(), but with an explicit path
* instead of a themed sound.
*/
void
shell_global_play_sound_file (ShellGlobal *global,
guint id,
const char *file_name,
const char *description,
ClutterEvent *for_event)
{
ca_proplist *props;
ca_proplist_create (&props);
build_ca_proplist_for_event (props, CA_PROP_MEDIA_FILENAME, file_name, description, for_event);
ca_context_play_full (global->sound_context, id, props, NULL, NULL);
ca_proplist_destroy (props);
}
/**
* shell_global_cancel_theme_sound:
* @global: the #ShellGlobal
* @id: the id previously passed to shell_global_play_theme_sound()
*
* Cancels a sound notification.
*/
void
shell_global_cancel_theme_sound (ShellGlobal *global,
guint id)
{
ca_context_cancel (global->sound_context, id);
}
/*
* Process Xdnd events
*
* We pass the position and leave events to JS via a signal
* where the actual drag & drop handling happens.
*
* http://www.freedesktop.org/wiki/Specifications/XDND
*/
gboolean _shell_global_check_xdnd_event (ShellGlobal *global,
XEvent *xev)
{
Window output_window = meta_get_overlay_window (global->meta_screen);
if (xev->xany.window != output_window && xev->xany.window != global->stage_xwindow)
return FALSE;
if (xev->xany.type == ClientMessage && xev->xclient.message_type == gdk_x11_get_xatom_by_name ("XdndPosition"))
{
XEvent xevent;
Window src = xev->xclient.data.l[0];
memset (&xevent, 0, sizeof(xevent));
xevent.xany.type = ClientMessage;
xevent.xany.display = global->xdisplay;
xevent.xclient.window = src;
xevent.xclient.message_type = gdk_x11_get_xatom_by_name ("XdndStatus");
xevent.xclient.format = 32;
xevent.xclient.data.l[0] = output_window;
/* flags: bit 0: will we accept the drop? bit 1: do we want more position messages */
xevent.xclient.data.l[1] = 2;
xevent.xclient.data.l[4] = None;
XSendEvent (global->xdisplay, src, False, 0, &xevent);
/* Store the timestamp of the xdnd position event */
global->xdnd_timestamp = xev->xclient.data.l[3];
g_signal_emit_by_name (G_OBJECT (global), "xdnd-position-changed",
(int)(xev->xclient.data.l[2] >> 16), (int)(xev->xclient.data.l[2] & 0xFFFF));
global->xdnd_timestamp = 0;
return TRUE;
}
else if (xev->xany.type == ClientMessage && xev->xclient.message_type == gdk_x11_get_xatom_by_name ("XdndLeave"))
{
g_signal_emit_by_name (G_OBJECT (global), "xdnd-leave");
return TRUE;
}
else if (xev->xany.type == ClientMessage && xev->xclient.message_type == gdk_x11_get_xatom_by_name ("XdndEnter"))
{
g_signal_emit_by_name (G_OBJECT (global), "xdnd-enter");
return TRUE;
}
return FALSE;
}
const char *
shell_global_get_session_mode (ShellGlobal *global)
{
g_return_val_if_fail (SHELL_IS_GLOBAL (global), "user");
return global->session_mode;
}
static GFile *
get_runtime_state_path (ShellGlobal *global,
const char *property_name)
{
return g_file_get_child (global->runtime_state_path, property_name);
}
/**
* shell_global_set_runtime_state:
* @global: a #ShellGlobal
* @property_name: Name of the property
* @variant: (allow-none): A #GVariant, or %NULL to unset
*
* Change the value of serialized runtime state.
*/
void
shell_global_set_runtime_state (ShellGlobal *global,
const char *property_name,
GVariant *variant)
{
GFile *path;
path = get_runtime_state_path (global, property_name);
if (variant == NULL)
(void) g_file_delete (path, NULL, NULL);
else
{
gsize size = g_variant_get_size (variant);
g_file_replace_contents (path, g_variant_get_data (variant), size,
NULL, FALSE, G_FILE_CREATE_REPLACE_DESTINATION,
NULL, NULL, NULL);
}
}
/**
* shell_global_get_runtime_state:
* @global: a #ShellGlobal
* @property_type: Expected data type
* @property_name: Name of the property
*
* The shell maintains "runtime" state which does not persist across
* logout or reboot.
*
* Returns: The value of a serialized property, or %NULL if none stored
*/
GVariant *
shell_global_get_runtime_state (ShellGlobal *global,
const char *property_type,
const char *property_name)
{
GVariant *res = NULL;
GMappedFile *mfile;
GFile *path;
char *pathstr;
GError *local_error = NULL;
path = get_runtime_state_path (global, property_name);
pathstr = g_file_get_path (path);
mfile = g_mapped_file_new (pathstr, FALSE, &local_error);
if (!mfile)
{
if (!g_error_matches (local_error, G_FILE_ERROR, G_FILE_ERROR_NOENT))
{
g_warning ("Failed to open runtime state: %s", local_error->message);
}
g_clear_error (&local_error);
}
else
{
GBytes *bytes = g_mapped_file_get_bytes (mfile);
res = g_variant_new_from_bytes ((GVariantType*)property_type, bytes, TRUE);
g_bytes_unref (bytes);
g_mapped_file_unref (mfile);
}
return res;
}
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