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b1007ed811
gnome-shell/src/shell-global.c
Colin Walters b1007ed811 Add shell_global_gc 
Primarily useful for debugging.  This was originally a patch against
gjs: https://bugzilla.gnome.org/show_bug.cgi?id=595323

But rather than add a random toplevel module just for this function
effectively, we can easily enough define it here.  Adding toplevel
modules to GScript should have a bit more formal process to it.

https://bugzilla.gnome.org/show_bug.cgi?id=608095
2010-02-01 16:08:43 -05:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include "config.h"
#include "shell-global-private.h"
#include "shell-wm.h"
#include "display.h"
#include "util.h"
#include <clutter/glx/clutter-glx.h>
#include <clutter/x11/clutter-x11.h>
#include <gdk/gdkx.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <dbus/dbus-glib.h>
#include <gio/gio.h>
#include <math.h>
#include <X11/extensions/Xfixes.h>
#include <gjs/gjs.h>
#ifdef HAVE_SYS_RESOURCE_H
#include <sys/resource.h>
#endif
#define SHELL_DBUS_SERVICE "org.gnome.Shell"
static void grab_notify (GtkWidget *widget, gboolean is_grab, gpointer user_data);
struct _ShellGlobal {
GObject parent;
/* 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;
ShellStageInputMode input_mode;
XserverRegion input_region;
GjsContext *js_context;
MutterPlugin *plugin;
ShellWM *wm;
const char *datadir;
const char *imagedir;
const char *configdir;
/* Displays the root window; see shell_global_create_root_pixmap_actor() */
ClutterActor *root_pixmap;
gint last_change_screen_width, last_change_screen_height;
};
enum {
PROP_0,
PROP_OVERLAY_GROUP,
PROP_SCREEN,
PROP_SCREEN_WIDTH,
PROP_SCREEN_HEIGHT,
PROP_STAGE,
PROP_WINDOW_GROUP,
PROP_WINDOW_MANAGER,
PROP_DATADIR,
PROP_IMAGEDIR,
PROP_CONFIGDIR,
};
/* Signals */
enum
{
PANEL_RUN_DIALOG,
PANEL_MAIN_MENU,
SCREEN_SIZE_CHANGED,
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)
{
switch (prop_id)
{
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_OVERLAY_GROUP:
g_value_set_object (value, mutter_plugin_get_overlay_group (global->plugin));
break;
case PROP_SCREEN:
g_value_set_object (value, shell_global_get_screen (global));
break;
case PROP_SCREEN_WIDTH:
{
int width, height;
mutter_plugin_query_screen_size (global->plugin, &width, &height);
g_value_set_int (value, width);
}
break;
case PROP_SCREEN_HEIGHT:
{
int width, height;
mutter_plugin_query_screen_size (global->plugin, &width, &height);
g_value_set_int (value, height);
}
break;
case PROP_STAGE:
g_value_set_object (value, mutter_plugin_get_stage (global->plugin));
break;
case PROP_WINDOW_GROUP:
g_value_set_object (value, mutter_plugin_get_window_group (global->plugin));
break;
case PROP_WINDOW_MANAGER:
g_value_set_object (value, global->wm);
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_CONFIGDIR:
g_value_set_string (value, global->configdir);
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");
char *imagedir;
GFile *conf_dir;
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->configdir = g_build_filename (g_get_home_dir (), ".gnome2", "shell", NULL);
conf_dir = g_file_new_for_path (global->configdir);
g_file_make_directory (conf_dir, NULL, NULL);
g_object_unref (conf_dir);
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->root_pixmap = NULL;
global->input_mode = SHELL_STAGE_INPUT_MODE_NORMAL;
global->last_change_screen_width = 0;
global->last_change_screen_height = 0;
}
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;
shell_global_signals[PANEL_RUN_DIALOG] =
g_signal_new ("panel-run-dialog",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ShellGlobalClass, panel_run_dialog),
NULL, NULL,
g_cclosure_marshal_VOID__INT,
G_TYPE_NONE, 1, G_TYPE_INT);
shell_global_signals[PANEL_MAIN_MENU] =
g_signal_new ("panel-main-menu",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ShellGlobalClass, panel_main_menu),
NULL, NULL,
g_cclosure_marshal_VOID__INT,
G_TYPE_NONE, 1, G_TYPE_INT);
shell_global_signals[SCREEN_SIZE_CHANGED] =
g_signal_new ("screen-size-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (ShellGlobalClass, screen_size_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
g_object_class_install_property (gobject_class,
PROP_OVERLAY_GROUP,
g_param_spec_object ("overlay-group",
"Overlay Group",
"Actor holding objects that appear above the desktop contents",
CLUTTER_TYPE_ACTOR,
G_PARAM_READABLE));
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_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_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_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_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_CONFIGDIR,
g_param_spec_string ("configdir",
"Configuration directory",
"Directory containing gnome-shell configuration files",
NULL,
G_PARAM_READABLE));
}
/**
* shell_clutter_texture_set_from_pixbuf:
* texture: #ClutterTexture to be modified
* pixbuf: #GdkPixbuf to set as an image for #ClutterTexture
*
* Convenience function for setting an image for #ClutterTexture based on #GdkPixbuf.
* Copied from an example posted by hp in this thread http://mail.gnome.org/archives/gtk-devel-list/2008-September/msg00218.html
*
* Return value: %TRUE on success, %FALSE on failure
*/
gboolean
shell_clutter_texture_set_from_pixbuf (ClutterTexture *texture,
GdkPixbuf *pixbuf)
{
return clutter_texture_set_from_rgb_data (texture,
gdk_pixbuf_get_pixels (pixbuf),
gdk_pixbuf_get_has_alpha (pixbuf),
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
gdk_pixbuf_get_rowstride (pixbuf),
gdk_pixbuf_get_has_alpha (pixbuf)
? 4 : 3,
0, NULL);
}
/**
* 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)
{
static ShellGlobal *the_object = NULL;
if (!the_object)
the_object = g_object_new (SHELL_TYPE_GLOBAL, 0);
return the_object;
}
/**
* shell_global_set_stage_input_mode:
* @global: the #ShellGlobal
* @mode: the stage input mode
*
* Sets the input mode of the stage; when @mode is
* %SHELL_STAGE_INPUT_MODE_NONREACTIVE, then the stage does not absorb
* any clicks, but just passes them through to underlying windows.
* When it is %SHELL_STAGE_INPUT_MODE_NORMAL, then the stage accepts
* clicks in the region defined by
* shell_global_set_stage_input_region() but passes through clicks
* outside that region. When it is %SHELL_STAGE_INPUT_MODE_FULLSCREEN,
* the stage absorbs all input.
*
* Note that whenever a mutter-internal Gtk widget has a pointer grab,
* the shell behaves as though it was in
* %SHELL_STAGE_INPUT_MODE_NONREACTIVE, to ensure that the widget gets
* any clicks it is expecting.
*/
void
shell_global_set_stage_input_mode (ShellGlobal *global,
ShellStageInputMode mode)
{
g_return_if_fail (SHELL_IS_GLOBAL (global));
if (mode == SHELL_STAGE_INPUT_MODE_NONREACTIVE || global->gtk_grab_active)
mutter_plugin_set_stage_reactive (global->plugin, FALSE);
else if (mode == SHELL_STAGE_INPUT_MODE_FULLSCREEN || !global->input_region)
mutter_plugin_set_stage_reactive (global->plugin, TRUE);
else
mutter_plugin_set_stage_input_region (global->plugin, global->input_region);
global->input_mode = mode;
}
/**
* 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
* the stage mode is %SHELL_STAGE_INPUT_MODE_NORMAL (but does not change the
* current stage mode).
*/
void
shell_global_set_stage_input_region (ShellGlobal *global,
GSList *rectangles)
{
MetaScreen *screen = mutter_plugin_get_screen (global->plugin);
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdpy = meta_display_get_xdisplay (display);
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 (xdpy, global->input_region);
global->input_region = XFixesCreateRegion (xdpy, rects, nrects);
g_free (rects);
/* set_stage_input_mode() will figure out whether or not we
* should actually change the input region right now.
*/
shell_global_set_stage_input_mode (global, global->input_mode);
}
/**
* shell_global_get_screen:
*
* Return value: (transfer none): The default #MetaScreen
*/
MetaScreen *
shell_global_get_screen (ShellGlobal *global)
{
return mutter_plugin_get_screen (global->plugin);
}
/**
* shell_global_get_windows:
*
* Gets the list of MutterWindows for the plugin's screen
*
* Return value: (element-type MutterWindow) (transfer none): the list of windows
*/
GList *
shell_global_get_windows (ShellGlobal *global)
{
g_return_val_if_fail (SHELL_IS_GLOBAL (global), NULL);
return mutter_plugin_get_windows (global->plugin);
}
static gboolean
emit_screen_size_changed_cb (gpointer data)
{
ShellGlobal *global = SHELL_GLOBAL (data);
int width, height;
mutter_plugin_query_screen_size (global->plugin, &width, &height);
if (global->last_change_screen_width != width || global->last_change_screen_height != height)
{
g_signal_emit (G_OBJECT (global), shell_global_signals[SCREEN_SIZE_CHANGED], 0);
global->last_change_screen_width = width;
global->last_change_screen_height = height;
}
return FALSE;
}
static void
global_stage_notify_width (GObject *gobject,
GParamSpec *pspec,
gpointer data)
{
ShellGlobal *global = SHELL_GLOBAL (data);
ClutterActor *stage = CLUTTER_ACTOR (gobject);
if (global->root_pixmap)
clutter_actor_set_width (CLUTTER_ACTOR (global->root_pixmap),
clutter_actor_get_width (stage));
g_object_notify (G_OBJECT (global), "screen-width");
meta_later_add (META_LATER_BEFORE_REDRAW,
emit_screen_size_changed_cb,
global,
NULL);
}
static void
global_stage_notify_height (GObject *gobject,
GParamSpec *pspec,
gpointer data)
{
ShellGlobal *global = SHELL_GLOBAL (data);
ClutterActor *stage = CLUTTER_ACTOR (gobject);
if (global->root_pixmap)
clutter_actor_set_height (CLUTTER_ACTOR (global->root_pixmap),
clutter_actor_get_height (stage));
g_object_notify (G_OBJECT (global), "screen-height");
meta_later_add (META_LATER_BEFORE_REDRAW,
emit_screen_size_changed_cb,
global,
NULL);
}
static void
global_plugin_notify_screen (GObject *gobject,
GParamSpec *pspec,
gpointer data)
{
ShellGlobal *global = SHELL_GLOBAL (data);
ClutterActor *stage = mutter_plugin_get_stage (MUTTER_PLUGIN (gobject));
g_signal_connect (stage, "notify::width",
G_CALLBACK (global_stage_notify_width), global);
g_signal_connect (stage, "notify::height",
G_CALLBACK (global_stage_notify_height), global);
}
void
_shell_global_set_plugin (ShellGlobal *global,
MutterPlugin *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);
/* At this point screen is NULL, so we can't yet do signal connections
* to the width and height; we wait until the screen property is set
* to do that. Note that this is a one time thing - screen will never
* change once first set.
*/
g_signal_connect (plugin, "notify::screen",
G_CALLBACK (global_plugin_notify_screen), global);
}
void
_shell_global_set_gjs_context (ShellGlobal *global,
GjsContext *context)
{
global->js_context = 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 value: %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)
{
ClutterStage *stage = CLUTTER_STAGE (mutter_plugin_get_stage (global->plugin));
Window stagewin = clutter_x11_get_stage_window (stage);
return mutter_plugin_begin_modal (global->plugin, stagewin, None, 0, timestamp);
}
/**
* shell_global_end_modal:
* @global: a #ShellGlobal
*
* Undoes the effect of shell_global_begin_modal().
*/
void
shell_global_end_modal (ShellGlobal *global,
guint32 timestamp)
{
mutter_plugin_end_modal (global->plugin, timestamp);
}
/**
* shell_global_display_is_grabbed
* @global: a #ShellGlobal
*
* Determines whether Mutter currently has a grab (keyboard or mouse or
* both) on the display. This could be the result of a current window
* management operation like a window move, or could be from
* shell_global_begin_modal().
*
* This function is useful to for ad-hoc checks to avoid over-grabbing
* the Mutter grab a grab from GTK+. Longer-term we might instead want a
* mechanism to make Mutter use GDK grabs instead of raw XGrabPointer().
*
* Return value: %TRUE if Mutter has a grab on the display
*/
gboolean
shell_global_display_is_grabbed (ShellGlobal *global)
{
MetaScreen *screen = mutter_plugin_get_screen (global->plugin);
MetaDisplay *display = meta_screen_get_display (screen);
return meta_display_get_grab_op (display) != META_GRAB_OP_NONE;
}
/* Defining this here for now, see
* https://bugzilla.gnome.org/show_bug.cgi?id=604075
* for upstreaming status.
*/
JSContext * gjs_context_get_context (GjsContext *context);
/**
* shell_global_add_extension_importer:
* @target_object_script: JavaScript code evaluating to a target object
* @target_property: Name of property to use for importer
* @directory: Source directory:
* @error: A #GError
*
* This function sets a property named @target_property on the object
* resulting from the evaluation of @target_object_script code, which
* acts as a GJS importer for directory @directory.
*
* Returns: %TRUE on success
*/
gboolean
shell_global_add_extension_importer (ShellGlobal *global,
const char *target_object_script,
const char *target_property,
const char *directory,
GError **error)
{
jsval target_object;
JSObject *importer;
JSContext *context = gjs_context_get_context (global->js_context);
char *search_path[2] = { 0, 0 };
// This is a bit of a hack; ideally we'd be able to pass our target
// object directly into this function, but introspection doesn't
// support that at the moment. Instead evaluate a string to get it.
if (!JS_EvaluateScript(context,
JS_GetGlobalObject(context),
target_object_script,
strlen (target_object_script),
"<target_object_script>",
0,
&target_object))
{
char *message;
gjs_log_exception(context,
&message);
g_set_error(error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
"%s", message ? message : "(unknown)");
g_free(message);
return FALSE;
}
if (!JSVAL_IS_OBJECT (target_object))
{
g_error ("shell_global_add_extension_importer: invalid target object");
return FALSE;
}
search_path[0] = (char*)directory;
importer = gjs_define_importer (context, JSVAL_TO_OBJECT (target_object), target_property, (const char **)search_path, FALSE);
return TRUE;
}
/* 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 ();
execvp (arr->pdata[0], (char**)arr->pdata);
g_warning ("failed to reexec: %s", g_strerror (errno));
g_ptr_array_free (arr, TRUE);
}
/**
* shell_global_gc:
* @global: A #ShellGlobal
*
* Start a garbage collection process. For more information, see
* https://developer.mozilla.org/En/JS_GC
*/
void
shell_global_gc (ShellGlobal *global)
{
JSContext *context = gjs_context_get_context (global->js_context);
JS_GC (context);
}
void
shell_global_grab_dbus_service (ShellGlobal *global)
{
GError *error = NULL;
DBusGConnection *session;
DBusGProxy *bus;
guint32 request_name_result;
session = dbus_g_bus_get (DBUS_BUS_SESSION, NULL);
bus = dbus_g_proxy_new_for_name (session,
DBUS_SERVICE_DBUS,
DBUS_PATH_DBUS,
DBUS_INTERFACE_DBUS);
if (!dbus_g_proxy_call (bus, "RequestName", &error,
G_TYPE_STRING, SHELL_DBUS_SERVICE,
G_TYPE_UINT, 0,
G_TYPE_INVALID,
G_TYPE_UINT, &request_name_result,
G_TYPE_INVALID))
{
g_print ("failed to acquire org.gnome.Shell: %s\n", error->message);
/* If we somehow got started again, it's not an error to be running
* already. So just exit 0.
*/
exit (0);
}
/* Also grab org.gnome.Panel to replace any existing panel process,
* unless a special environment variable is passed. The environment
* variable is used by the gnome-shell (no --replace) launcher in
* Xephyr */
if (!g_getenv ("GNOME_SHELL_NO_REPLACE"))
{
if (!dbus_g_proxy_call (bus, "RequestName", &error, G_TYPE_STRING,
"org.gnome.Panel", G_TYPE_UINT,
DBUS_NAME_FLAG_REPLACE_EXISTING | DBUS_NAME_FLAG_DO_NOT_QUEUE,
G_TYPE_INVALID, G_TYPE_UINT,
&request_name_result, G_TYPE_INVALID))
{
g_print ("failed to acquire org.gnome.Panel: %s\n", error->message);
exit (1);
}
}
g_object_unref (bus);
}
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 */
shell_global_set_stage_input_mode (global, global->input_mode);
}
/*
* Updates the global->root_pixmap actor with the root window's pixmap or fails
* with a warning.
*/
static void
update_root_window_pixmap (ShellGlobal *global)
{
Atom type;
int format;
gulong nitems;
gulong bytes_after;
guchar *data;
Pixmap root_pixmap_id = None;
if (!XGetWindowProperty (gdk_x11_get_default_xdisplay (),
gdk_x11_get_default_root_xwindow (),
gdk_x11_get_xatom_by_name ("_XROOTPMAP_ID"),
0, LONG_MAX,
False,
AnyPropertyType,
&type, &format, &nitems, &bytes_after, &data) &&
type != None)
{
/* Got a property. */
if (type == XA_PIXMAP && format == 32 && nitems == 1)
{
/* Was what we expected. */
root_pixmap_id = *(Pixmap *)data;
}
else
{
g_warning ("Could not get the root window pixmap");
}
XFree(data);
}
clutter_x11_texture_pixmap_set_pixmap (CLUTTER_X11_TEXTURE_PIXMAP (global->root_pixmap),
root_pixmap_id);
}
/*
* Called when the X server emits a root window change event. If the event is
* about a new pixmap, update the global->root_pixmap actor.
*/
static GdkFilterReturn
root_window_filter (GdkXEvent *native, GdkEvent *event, gpointer data)
{
XEvent *xevent = (XEvent *)native;
if ((xevent->type == PropertyNotify) &&
(xevent->xproperty.window == gdk_x11_get_default_root_xwindow ()) &&
(xevent->xproperty.atom == gdk_x11_get_xatom_by_name ("_XROOTPMAP_ID")))
update_root_window_pixmap (SHELL_GLOBAL (data));
return GDK_FILTER_CONTINUE;
}
/* Workaround for a clutter bug where if ClutterGLXTexturePixmap
* is painted without the pixmap being set, a crash will occur inside
* Cogl.
*
* http://bugzilla.openedhand.com/show_bug.cgi?id=1644
*/
static void
root_pixmap_paint (ClutterActor *actor, gpointer data)
{
Pixmap pixmap;
g_object_get (G_OBJECT (actor), "pixmap", &pixmap, NULL);
if (!pixmap)
g_signal_stop_emission_by_name (actor, "paint");
}
/*
* Called when the root window pixmap actor is destroyed.
*/
static void
root_pixmap_destroy (GObject *sender, gpointer data)
{
ShellGlobal *global = SHELL_GLOBAL (data);
gdk_window_remove_filter (gdk_get_default_root_window (),
root_window_filter, global);
global->root_pixmap = NULL;
}
/**
* shell_global_format_time_relative_pretty:
* @global:
* @delta: Time in seconds since the current time
* @text: (out): Relative human-consumption-only time string
* @next_update: (out): Time in seconds until we should redisplay the time
*
* Format a time value for human consumption only. The passed time
* value is a delta in terms of seconds from the current time.
* This function needs to be in C because of its use of ngettext() which
* is not accessible from JavaScript.
*/
void
shell_global_format_time_relative_pretty (ShellGlobal *global,
guint delta,
char **text,
guint *next_update)
{
#define MINUTE (60)
#define HOUR (MINUTE*60)
#define DAY (HOUR*24)
#define WEEK (DAY*7)
if (delta < MINUTE) {
*text = g_strdup (_("Less than a minute ago"));
*next_update = MINUTE - delta;
} else if (delta < HOUR) {
*text = g_strdup_printf (dngettext (GETTEXT_PACKAGE,
"%d minute ago", "%d minutes ago",
delta / MINUTE), delta / MINUTE);
*next_update = MINUTE - (delta % MINUTE);
} else if (delta < DAY) {
*text = g_strdup_printf (dngettext (GETTEXT_PACKAGE,
"%d hour ago", "%d hours ago",
delta / HOUR), delta / HOUR);
*next_update = HOUR - (delta % HOUR);
} else if (delta < WEEK) {
*text = g_strdup_printf (dngettext (GETTEXT_PACKAGE,
"%d day ago", "%d days ago",
delta / DAY), delta / DAY);
*next_update = DAY - (delta % DAY);
} else {
*text = g_strdup_printf (dngettext (GETTEXT_PACKAGE,
"%d week ago", "%d weeks ago",
delta / WEEK), delta / WEEK);
*next_update = WEEK - (delta % WEEK);
}
}
/**
* shell_global_create_root_pixmap_actor:
* @global: a #ShellGlobal
*
* Creates an actor showing the root window pixmap.
*
* Return value: (transfer none): a #ClutterActor with the root window pixmap.
* The actor is floating, hence (transfer none).
*/
ClutterActor *
shell_global_create_root_pixmap_actor (ShellGlobal *global)
{
GdkWindow *window;
ClutterActor *stage;
/* The actor created is actually a ClutterClone of global->root_pixmap. */
if (global->root_pixmap == NULL)
{
global->root_pixmap = clutter_glx_texture_pixmap_new ();
/* The low and medium quality filters give nearest-neighbor resizing. */
clutter_texture_set_filter_quality (CLUTTER_TEXTURE (global->root_pixmap),
CLUTTER_TEXTURE_QUALITY_HIGH);
/* We can only clone an actor within a stage, so we hide the source
* texture then add it to the stage */
clutter_actor_hide (global->root_pixmap);
stage = mutter_plugin_get_stage (global->plugin);
clutter_container_add_actor (CLUTTER_CONTAINER (stage),
global->root_pixmap);
g_signal_connect (global->root_pixmap, "paint",
G_CALLBACK (root_pixmap_paint), NULL);
/* This really should never happen; but just in case... */
g_signal_connect (global->root_pixmap, "destroy",
G_CALLBACK (root_pixmap_destroy), global);
/* Metacity handles changes to some root window properties in its global
* event filter, though not _XROOTPMAP_ID. For all root window property
* changes, the global filter returns GDK_FILTER_CONTINUE, so our
* window specific filter will be called after the global one.
*
* Because Metacity is already handling root window property updates,
* we don't have to worry about adding the PropertyChange mask to the
* root window to get PropertyNotify events.
*/
window = gdk_get_default_root_window ();
gdk_window_add_filter (window, root_window_filter, global);
update_root_window_pixmap (global);
}
return clutter_clone_new (global->root_pixmap);
}
/**
* shell_global_get_monitors:
* @global: the #ShellGlobal
*
* Gets a list of the bounding boxes of the active screen's monitors.
*
* Return value: (transfer full) (element-type GdkRectangle): a list
* of monitor bounding boxes.
*/
GSList *
shell_global_get_monitors (ShellGlobal *global)
{
MetaScreen *screen = shell_global_get_screen (global);
GSList *monitors = NULL;
MetaRectangle rect;
int i;
g_assert (sizeof (MetaRectangle) == sizeof (GdkRectangle) &&
G_STRUCT_OFFSET (MetaRectangle, x) == G_STRUCT_OFFSET (GdkRectangle, x) &&
G_STRUCT_OFFSET (MetaRectangle, y) == G_STRUCT_OFFSET (GdkRectangle, y) &&
G_STRUCT_OFFSET (MetaRectangle, width) == G_STRUCT_OFFSET (GdkRectangle, width) &&
G_STRUCT_OFFSET (MetaRectangle, height) == G_STRUCT_OFFSET (GdkRectangle, height));
for (i = meta_screen_get_n_monitors (screen) - 1; i >= 0; i--)
{
meta_screen_get_monitor_geometry (screen, i, &rect);
monitors = g_slist_prepend (monitors,
g_boxed_copy (GDK_TYPE_RECTANGLE, &rect));
}
return monitors;
}
/**
* shell_global_get_primary_monitor:
* @global: the #ShellGlobal
*
* Gets the bounding box of the primary monitor (the one that the
* panel is on).
*
* Return value: the bounding box of the primary monitor
*/
GdkRectangle *
shell_global_get_primary_monitor (ShellGlobal *global)
{
MetaScreen *screen = shell_global_get_screen (global);
MetaRectangle rect;
g_assert (sizeof (MetaRectangle) == sizeof (GdkRectangle) &&
G_STRUCT_OFFSET (MetaRectangle, x) == G_STRUCT_OFFSET (GdkRectangle, x) &&
G_STRUCT_OFFSET (MetaRectangle, y) == G_STRUCT_OFFSET (GdkRectangle, y) &&
G_STRUCT_OFFSET (MetaRectangle, width) == G_STRUCT_OFFSET (GdkRectangle, width) &&
G_STRUCT_OFFSET (MetaRectangle, height) == G_STRUCT_OFFSET (GdkRectangle, height));
meta_screen_get_monitor_geometry (screen, 0, &rect);
return g_boxed_copy (GDK_TYPE_RECTANGLE, &rect);
}
/**
* shell_global_get_focus_monitor:
* @global: the #ShellGlobal
*
* Gets the bounding box of the monitor containing the window that
* currently contains the keyboard focus.
*
* Return value: the bounding box of the focus monitor
*/
GdkRectangle *
shell_global_get_focus_monitor (ShellGlobal *global)
{
MetaScreen *screen = shell_global_get_screen (global);
MetaDisplay *display = meta_screen_get_display (screen);
MetaWindow *focus = meta_display_get_focus_window (display);
MetaRectangle rect, wrect;
int nmonitors, i;
if (focus)
{
meta_window_get_outer_rect (focus, &wrect);
nmonitors = meta_screen_get_n_monitors (screen);
/* Find the monitor that the top-left corner of @focus is on. */
for (i = 0; i < nmonitors; i++)
{
meta_screen_get_monitor_geometry (screen, i, &rect);
if (rect.x < wrect.x && rect.y < wrect.y &&
rect.x + rect.width > wrect.x &&
rect.y + rect.height > wrect.y)
return g_boxed_copy (GDK_TYPE_RECTANGLE, &rect);
}
}
meta_screen_get_monitor_geometry (screen, 0, &rect);
return g_boxed_copy (GDK_TYPE_RECTANGLE, &rect);
}
/**
* shell_global_get_modifier_keys:
* @global: the #ShellGlobal
*
* Gets the current set of modifier keys that are pressed down;
* this is a wrapper around gdk_display_get_pointer() that strips
* out any un-declared modifier flags, to make gjs happy; see
* https://bugzilla.gnome.org/show_bug.cgi?id=597292.
*
* Return value: the current modifiers
*/
GdkModifierType
shell_global_get_modifier_keys (ShellGlobal *global)
{
GdkModifierType mods;
gdk_display_get_pointer (gdk_display_get_default (), NULL, NULL, NULL, &mods);
return mods & GDK_MODIFIER_MASK;
}
/**
* shell_get_event_state:
* @event: a #ClutterEvent
*
* Gets the current state of the event (the set of modifier keys that
* are pressed down). Thhis is a wrapper around
* clutter_event_get_state() that strips out any un-declared modifier
* flags, to make gjs happy; see
* https://bugzilla.gnome.org/show_bug.cgi?id=597292.
*
* Return value: the state from the event
*/
ClutterModifierType
shell_get_event_state (ClutterEvent *event)
{
ClutterModifierType state = clutter_event_get_state (event);
return state & CLUTTER_MODIFIER_MASK;
}
static void
shell_popup_menu_position_func (GtkMenu *menu,
int *x,
int *y,
gboolean *push_in,
gpointer user_data)
{
*x = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (menu), "shell-menu-x"));
*y = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (menu), "shell-menu-y"));
}
/**
* shell_popup_menu:
* @menu: a #GtkMenu
* @button: mouse button that triggered the menu
* @time: timestamp of event that triggered the menu
* @menu_x: x coordinate to display the menu at
* @menu_y: y coordinate to display the menu at
*
* Wraps gtk_menu_popup(), but using @menu_x, @menu_y for the location
* rather than needing a callback.
**/
void
shell_popup_menu (GtkMenu *menu, int button, guint32 time,
int menu_x, int menu_y)
{
g_object_set_data (G_OBJECT (menu), "shell-menu-x", GINT_TO_POINTER (menu_x));
g_object_set_data (G_OBJECT (menu), "shell-menu-y", GINT_TO_POINTER (menu_y));
gtk_menu_popup (menu, NULL, NULL, shell_popup_menu_position_func, NULL,
button, time);
}
/**
* 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;
MetaDisplay *display;
/* 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 an out-of-date
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().
*/
display = meta_screen_get_display (shell_global_get_screen (global));
time = meta_display_get_current_time (display);
if (time != CLUTTER_CURRENT_TIME)
return time;
return clutter_get_current_event_time ();
}
/**
* shell_global_get_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: A new #GAppLaunchContext
*/
GAppLaunchContext *
shell_global_create_app_launch_context (ShellGlobal *global)
{
GdkAppLaunchContext *context;
context = gdk_app_launch_context_new ();
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 (shell_global_get_screen (global)));
return (GAppLaunchContext *)context;
}
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