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gnome-shell/src/shell-global.c
Ray Strode de352a309d global: drop incorrect memset 
shell_global_get_memory_info tries to zero initialize the output
parameter with memset, but it passes the wrong size (because of
a missing *).  There's no reason to do the memset, though. In the
normal case all members of the struct gets initialized before the
function returns anyway.

This commit drops the memset call in favor of one explicit 0 assignment
that only gets executed on on atypical platforms.

https://bugzilla.gnome.org/show_bug.cgi?id=662236
2011-10-19 17:13:20 -04:00

1960 lines
62 KiB
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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 <X11/extensions/Xfixes.h>
#include <canberra.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>
/* Memory report bits */
#ifdef HAVE_MALLINFO
#include <malloc.h>
#endif
#include "shell-enum-types.h"
#include "shell-global-private.h"
#include "shell-jsapi-compat-private.h"
#include "shell-marshal.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 *stage_gdk_window;
MetaDisplay *meta_display;
GdkDisplay *gdk_display;
Display *xdisplay;
MetaScreen *meta_screen;
GdkScreen *gdk_screen;
ShellSessionType session_type;
/* 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;
MetaPlugin *plugin;
ShellWM *wm;
GSettings *settings;
const char *datadir;
const char *imagedir;
const char *userdatadir;
StFocusManager *focus_manager;
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;
};
enum {
PROP_0,
PROP_SESSION_TYPE,
PROP_OVERLAY_GROUP,
PROP_SCREEN,
PROP_GDK_SCREEN,
PROP_DISPLAY,
PROP_SCREEN_WIDTH,
PROP_SCREEN_HEIGHT,
PROP_STAGE,
PROP_STAGE_INPUT_MODE,
PROP_WINDOW_GROUP,
PROP_BACKGROUND_ACTOR,
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_STAGE_INPUT_MODE:
shell_global_set_stage_input_mode (global, g_value_get_enum (value));
break;
case PROP_SESSION_TYPE:
global->session_type = g_value_get_enum (value);
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_TYPE:
g_value_set_enum (value, shell_global_get_session_type (global));
break;
case PROP_OVERLAY_GROUP:
g_value_set_object (value, meta_get_overlay_group_for_screen (global->meta_screen));
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_STAGE_INPUT_MODE:
g_value_set_enum (value, global->input_mode);
break;
case PROP_WINDOW_GROUP:
g_value_set_object (value, meta_get_window_group_for_screen (global->meta_screen));
break;
case PROP_BACKGROUND_ACTOR:
g_value_set_object (value, meta_get_background_actor_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;
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);
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->input_mode = SHELL_STAGE_INPUT_MODE_NORMAL;
ca_context_create (&global->sound_context);
ca_context_change_props (global->sound_context, CA_PROP_APPLICATION_NAME, PACKAGE_NAME, CA_PROP_APPLICATION_ID, "org.gnome.Shell", 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_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,
_shell_marshal_VOID__INT_INT,
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,
g_cclosure_marshal_VOID__VOID,
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,
g_cclosure_marshal_VOID__VOID,
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,
gi_cclosure_marshal_generic,
G_TYPE_NONE, 2,
G_TYPE_STRING,
G_TYPE_STRING);
g_object_class_install_property (gobject_class,
PROP_SESSION_TYPE,
g_param_spec_enum ("session-type",
"Session Type",
"The type of session",
SHELL_TYPE_SESSION_TYPE,
SHELL_SESSION_USER,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
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_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_STAGE_INPUT_MODE,
g_param_spec_enum ("stage-input-mode",
"Stage input mode",
"The stage input mode",
SHELL_TYPE_STAGE_INPUT_MODE,
SHELL_STAGE_INPUT_MODE_NORMAL,
G_PARAM_READWRITE));
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_BACKGROUND_ACTOR,
g_param_spec_object ("background-actor",
"Background Actor",
"Actor drawing root window background",
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 void
focus_window_changed (MetaDisplay *display,
GParamSpec *param,
gpointer user_data)
{
ShellGlobal *global = user_data;
if (global->input_mode == SHELL_STAGE_INPUT_MODE_FOCUSED &&
meta_display_get_focus_window (display) != NULL)
shell_global_set_stage_input_mode (global, SHELL_STAGE_INPUT_MODE_NORMAL);
}
static void
shell_global_focus_stage (ShellGlobal *global)
{
XSetInputFocus (global->xdisplay, global->stage_xwindow,
RevertToPointerRoot,
shell_global_get_current_time (global));
}
/**
* 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.
*
* When the input mode is %SHELL_STAGE_INPUT_MODE_FOCUSED, the pointer
* is handled as with %SHELL_STAGE_INPUT_MODE_NORMAL, but additionally
* the stage window has the keyboard focus. If the stage loses the
* focus (eg, because the user clicked into a window) the input mode
* will revert to %SHELL_STAGE_INPUT_MODE_NORMAL.
*
* 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)
meta_plugin_set_stage_reactive (global->plugin, FALSE);
else if (mode == SHELL_STAGE_INPUT_MODE_FULLSCREEN || !global->input_region)
meta_plugin_set_stage_reactive (global->plugin, TRUE);
else
meta_plugin_set_stage_input_region (global->plugin, global->input_region);
if (mode == SHELL_STAGE_INPUT_MODE_FOCUSED)
shell_global_focus_stage (global);
if (mode != global->input_mode)
{
global->input_mode = mode;
g_object_notify (G_OBJECT (global), "stage-input-mode");
}
}
/**
* shell_global_set_cursor:
* @global: A #ShellGlobal
* @type: the type of the cursor
*
* Set the cursor on the stage window.
*/
void
shell_global_set_cursor (ShellGlobal *global,
ShellCursor type)
{
const char *name;
GdkCursor *cursor;
switch (type)
{
case SHELL_CURSOR_DND_IN_DRAG:
name = "dnd-none";
break;
case SHELL_CURSOR_DND_MOVE:
name = "dnd-move";
break;
case SHELL_CURSOR_DND_COPY:
name = "dnd-copy";
break;
case SHELL_CURSOR_DND_UNSUPPORTED_TARGET:
name = "dnd-none";
break;
case SHELL_CURSOR_POINTING_HAND:
name = "hand";
break;
default:
g_return_if_reached ();
}
cursor = gdk_cursor_new_from_name (global->gdk_display, name);
if (!cursor)
{
GdkCursorType cursor_type;
switch (type)
{
case SHELL_CURSOR_DND_IN_DRAG:
cursor_type = GDK_FLEUR;
break;
case SHELL_CURSOR_DND_MOVE:
cursor_type = GDK_TARGET;
break;
case SHELL_CURSOR_DND_COPY:
cursor_type = GDK_PLUS;
break;
case SHELL_CURSOR_POINTING_HAND:
cursor_type = GDK_HAND2;
break;
case SHELL_CURSOR_DND_UNSUPPORTED_TARGET:
cursor_type = GDK_X_CURSOR;
break;
default:
g_return_if_reached ();
}
cursor = gdk_cursor_new (cursor_type);
}
gdk_window_set_cursor (global->stage_gdk_window, cursor);
gdk_cursor_unref (cursor);
}
/**
* shell_global_unset_cursor:
* @global: A #ShellGlobal
*
* Unset the cursor on the stage window.
*/
void
shell_global_unset_cursor (ShellGlobal *global)
{
gdk_window_set_cursor (global->stage_gdk_window, NULL);
}
/**
* 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)
{
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);
/* 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 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 void
global_stage_before_paint (ClutterStage *stage,
ShellGlobal *global)
{
shell_perf_log_event (shell_perf_log_get_default (),
"clutter.stagePaintStart");
}
static void
global_stage_after_paint (ClutterStage *stage,
ShellGlobal *global)
{
shell_perf_log_event (shell_perf_log_get_default (),
"clutter.stagePaintDone");
}
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_plugin_get_stage (plugin));
global->stage_xwindow = clutter_x11_get_stage_window (global->stage);
global->stage_gdk_window = gdk_x11_window_foreign_new_for_display (global->gdk_display,
global->stage_xwindow);
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);
g_signal_connect (global->stage, "paint",
G_CALLBACK (global_stage_before_paint), global);
g_signal_connect_after (global->stage, "paint",
G_CALLBACK (global_stage_after_paint), global);
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->meta_display, "notify::focus-window",
G_CALLBACK (focus_window_changed), global);
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 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)
{
return meta_plugin_begin_modal (global->plugin, global->stage_xwindow,
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)
{
meta_plugin_end_modal (global->plugin, timestamp);
}
/**
* shell_global_create_pointer_barrier
* @global: a #ShellGlobal
* @x1: left X coordinate
* @y1: top Y coordinate
* @x2: right X coordinate
* @y2: bottom Y coordinate
* @directions: The directions we're allowed to pass through
*
* If supported by X creates a pointer barrier.
*
* Return value: value you can pass to shell_global_destroy_pointer_barrier()
*/
guint32
shell_global_create_pointer_barrier (ShellGlobal *global,
int x1, int y1, int x2, int y2,
int directions)
{
#if HAVE_XFIXESCREATEPOINTERBARRIER
return (guint32)
XFixesCreatePointerBarrier (global->xdisplay,
DefaultRootWindow (global->xdisplay),
x1, y1,
x2, y2,
directions,
0, NULL);
#else
return 0;
#endif
}
/**
* shell_global_destroy_pointer_barrier
* @global: a #ShellGlobal
* @barrier: a pointer barrier
*
* Destroys the @barrier created by shell_global_create_pointer_barrier().
*/
void
shell_global_destroy_pointer_barrier (ShellGlobal *global, guint32 barrier)
{
#if HAVE_XFIXESCREATEPOINTERBARRIER
g_return_if_fail (barrier > 0);
XFixesDestroyPointerBarrier (global->xdisplay, (PointerBarrier)barrier);
#endif
}
/**
* 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;
JSContext *context = gjs_context_get_native_context (global->js_context);
char *search_path[2] = { 0, 0 };
JS_BeginRequest (context);
// 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);
goto out_error;
}
if (!JSVAL_IS_OBJECT (target_object))
{
g_error ("shell_global_add_extension_importer: invalid target object");
goto out_error;
}
search_path[0] = (char*)directory;
gjs_define_importer (context, JSVAL_TO_OBJECT (target_object), target_property, (const char **)search_path, FALSE);
JS_EndRequest (context);
return TRUE;
out_error:
JS_EndRequest (context);
return FALSE;
}
/* 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);
}
/**
* 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_native_context (global->js_context);
JS_GC (context);
}
/**
* shell_global_maybe_gc:
* @global: A #ShellGlobal
*
* Start a garbage collection process when it would free up enough memory
* to be worth the amount of time it would take
* https://developer.mozilla.org/en/SpiderMonkey/JSAPI_Reference/JS_MaybeGC
*/
void
shell_global_maybe_gc (ShellGlobal *global)
{
gjs_context_maybe_gc (global->js_context);
}
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 */
shell_global_set_stage_input_mode (global, global->input_mode);
}
/**
* 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.
* 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.
*/
void
shell_global_get_pointer (ShellGlobal *global,
int *x,
int *y,
ClutterModifierType *mods)
{
GdkModifierType raw_mods;
gdk_display_get_pointer (global->gdk_display, NULL, x, y, &raw_mods);
*mods = raw_mods & GDK_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;
GdkModifierType mods;
ClutterMotionEvent event;
gdk_display_get_pointer (global->gdk_display, NULL, &x, &y, &mods);
event.type = CLUTTER_MOTION;
event.time = shell_global_get_current_time (global);
event.flags = 0;
/* This is wrong: we should be setting event.stage to NULL if the
* pointer is not inside the bounds of the stage given the current
* stage_input_mode. For our current purposes however, this works.
*/
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;
const ClutterEvent *clutter_event;
/* 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 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().
*/
time = meta_display_get_current_time (global->meta_display);
if (time != CLUTTER_CURRENT_TIME)
return time;
/*
* We don't use clutter_get_current_event_time as it can give us a
* too old timestamp if there is no current event.
*/
clutter_event = clutter_get_current_event ();
if (clutter_event != NULL)
return clutter_event_get_time (clutter_event);
else
return CLUTTER_CURRENT_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_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 (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;
/* Previously we called gjs_maybe_gc(). However, it simply doesn't
* trigger often enough. Garbage collection is very fast here, so
* let's just aggressively GC. This will help avoid both heap
* fragmentation, and the GC kicking in when we don't want it to.
*/
gjs_context_gc (global->js_context);
/* 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);
}
/**
* shell_global_play_theme_sound:
* @global: the #ShellGlobal
* @id: an id, used to cancel later (0 if not needed)
* @name: the sound 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 (ShellGlobal *global,
guint id,
const char *name)
{
ca_context_play (global->sound_context, id, CA_PROP_EVENT_ID, name, NULL);
}
/**
* 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;
}
/**
* shell_global_launch_calendar_server:
* @global: The #ShellGlobal.
*
* Launch the gnome-shell-calendar-server helper.
*/
void
shell_global_launch_calendar_server (ShellGlobal *global)
{
const gchar *bin_dir;
gchar *calendar_server_exe;
GError *error;
gchar *argv[2];
gint child_standard_input;
/* launch calendar-server */
bin_dir = g_getenv ("GNOME_SHELL_BINDIR");
if (bin_dir != NULL)
calendar_server_exe = g_strdup_printf ("%s/gnome-shell-calendar-server", bin_dir);
else
calendar_server_exe = g_strdup_printf (GNOME_SHELL_LIBEXECDIR "/gnome-shell-calendar-server");
argv[0] = calendar_server_exe;
argv[1] = NULL;
error = NULL;
if (!g_spawn_async_with_pipes (NULL, /* working_directory */
argv,
NULL, /* envp */
0, /* GSpawnFlags */
NULL, /* child_setup */
NULL, /* user_data */
NULL, /* GPid *child_pid */
&child_standard_input,
NULL, /* gint *stdout */
NULL, /* gint *stderr */
&error))
{
g_warning ("Error launching `%s': %s (%s %d)",
calendar_server_exe,
error->message,
g_quark_to_string (error->domain),
error->code);
g_error_free (error);
}
/* Note that gnome-shell-calendar-server exits whenever its stdin
* file descriptor is HUP'ed. This means that whenever the the shell
* process exits or is being replaced, the calendar server is also
* exits...and if the shell is being replaced, a new copy of the
* calendar server is launched...
*/
g_free (calendar_server_exe);
}
static void
grab_screenshot (ClutterActor *stage,
_screenshot_data *screenshot_data)
{
MetaScreen *screen = shell_global_get_screen (screenshot_data->global);
cairo_status_t status;
cairo_surface_t *image;
guchar *data;
int width, height;
meta_plugin_query_screen_size (screenshot_data->global->plugin, &width, &height);
image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
data = cairo_image_surface_get_data (image);
cogl_flush();
cogl_read_pixels (0, 0, width, height, COGL_READ_PIXELS_COLOR_BUFFER, CLUTTER_CAIRO_FORMAT_ARGB32, data);
cairo_surface_mark_dirty (image);
if (meta_screen_get_n_monitors (screen) > 1)
{
cairo_region_t *screen_region = cairo_region_create ();
cairo_region_t *stage_region;
MetaRectangle monitor_rect;
cairo_rectangle_int_t stage_rect;
int i;
cairo_t *cr;
for (i = meta_screen_get_n_monitors (screen) - 1; i >= 0; i--)
{
meta_screen_get_monitor_geometry (screen, i, &monitor_rect);
cairo_region_union_rectangle (screen_region, (const cairo_rectangle_int_t *) &monitor_rect);
}
stage_rect.x = 0;
stage_rect.y = 0;
stage_rect.width = width;
stage_rect.height = height;
stage_region = cairo_region_create_rectangle ((const cairo_rectangle_int_t *) &stage_rect);
cairo_region_xor (stage_region, screen_region);
cairo_region_destroy (screen_region);
cr = cairo_create (image);
for (i = 0; i < cairo_region_num_rectangles (stage_region); i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (stage_region, i, &rect);
cairo_rectangle (cr, (double) rect.x, (double) rect.y, (double) rect.width, (double) rect.height);
cairo_fill (cr);
}
cairo_destroy (cr);
cairo_region_destroy (stage_region);
}
status = cairo_surface_write_to_png (image, screenshot_data->filename);
cairo_surface_destroy (image);
if (screenshot_data->callback)
screenshot_data->callback (screenshot_data->global, status == CAIRO_STATUS_SUCCESS);
g_signal_handlers_disconnect_by_func (stage, (void *)grab_screenshot, (gpointer)screenshot_data);
g_free (screenshot_data->filename);
g_free (screenshot_data);
}
static void
grab_area_screenshot (ClutterActor *stage,
_screenshot_data *screenshot_data)
{
cairo_status_t status;
cairo_surface_t *image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, screenshot_data->width, screenshot_data->height);
guchar *data = cairo_image_surface_get_data (image);
cogl_flush();
cogl_read_pixels (screenshot_data->x, screenshot_data->y, screenshot_data->width, screenshot_data->height,
COGL_READ_PIXELS_COLOR_BUFFER, CLUTTER_CAIRO_FORMAT_ARGB32, data);
cairo_surface_mark_dirty (image);
status = cairo_surface_write_to_png (image, screenshot_data->filename);
cairo_surface_destroy (image);
if (screenshot_data->callback)
screenshot_data->callback (screenshot_data->global, status == CAIRO_STATUS_SUCCESS);
g_signal_handlers_disconnect_by_func (stage, (void *)grab_area_screenshot, (gpointer)screenshot_data);
g_free (screenshot_data->filename);
g_free (screenshot_data);
}
/**
* shell_global_screenshot:
* @global: the #ShellGlobal
* @filename: The filename for the screenshot
* @callback: (scope async): function to call returning success or failure
* of the async grabbing
*
* Takes a screenshot of the whole screen
* in @filename as png image.
*
*/
void
shell_global_screenshot (ShellGlobal *global,
const char *filename,
ShellGlobalScreenshotCallback callback)
{
ClutterActor *stage;
_screenshot_data *data = g_new0 (_screenshot_data, 1);
data->global = global;
data->filename = g_strdup (filename);
data->callback = callback;
stage = CLUTTER_ACTOR (meta_plugin_get_stage (global->plugin));
g_signal_connect_after (stage, "paint", G_CALLBACK (grab_screenshot), (gpointer)data);
clutter_actor_queue_redraw (stage);
}
/**
* shell_global_screenshot_area:
* @global: the #ShellGlobal
* @x: The X coordinate of the area
* @y: The Y coordinate of the area
* @width: The width of the area
* @height: The height of the area
* @filename: The filename for the screenshot
* @callback: (scope async): function to call returning success or failure
* of the async grabbing
*
* Takes a screenshot of the passed in area and saves it
* in @filename as png image.
*
*/
void
shell_global_screenshot_area (ShellGlobal *global,
int x,
int y,
int width,
int height,
const char *filename,
ShellGlobalScreenshotCallback callback)
{
ClutterActor *stage;
_screenshot_data *data = g_new0 (_screenshot_data, 1);
data->global = global;
data->filename = g_strdup (filename);
data->x = x;
data->y = y;
data->width = width;
data->height = height;
data->callback = callback;
stage = CLUTTER_ACTOR (meta_plugin_get_stage (global->plugin));
g_signal_connect_after (stage, "paint", G_CALLBACK (grab_area_screenshot), (gpointer)data);
clutter_actor_queue_redraw (stage);
}
/**
* shell_global_screenshot_window:
* @global: the #ShellGlobal
* @include_frame: Whether to include the frame or not
*
* @filename: The filename for the screenshot
*
* Takes a screenshot of the focused window (optionally omitting the frame)
* in @filename as png image.
*
* Return value: success or failure.
*/
gboolean
shell_global_screenshot_window (ShellGlobal *global,
gboolean include_frame,
const char *filename)
{
CoglHandle texture;
cairo_surface_t *image;
guchar *data;
MetaScreen *screen = meta_plugin_get_screen (global->plugin);
MetaDisplay *display = meta_screen_get_display (screen);
MetaWindow *window = meta_display_get_focus_window (display);
ClutterActor *window_actor;
cairo_status_t status;
window_actor = CLUTTER_ACTOR (meta_window_get_compositor_private (window));
texture = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (meta_window_actor_get_texture (META_WINDOW_ACTOR (window_actor))));
if (!include_frame)
{
MetaRectangle *window_rect = meta_window_get_rect (window);
texture = cogl_texture_new_from_sub_texture (texture,
window_rect->x,
window_rect->y,
window_rect->width,
window_rect->height);
image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
window_rect->width,
window_rect->height);
}
else
image = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
clutter_actor_get_width (window_actor),
clutter_actor_get_height (window_actor));
data = cairo_image_surface_get_data (image);
cogl_flush();
cogl_texture_get_data (texture, CLUTTER_CAIRO_FORMAT_ARGB32, 0, data);
cairo_surface_mark_dirty (image);
status = cairo_surface_write_to_png (image, filename);
cairo_surface_destroy (image);
return status == CAIRO_STATUS_SUCCESS;
}
/**
* shell_global_get_session_type:
* @global: The #ShellGlobal.
*
* Gets the type of session gnome-shell provides.
*
* The type determines what UI elements are displayed,
* what keybindings work, and generally how the shell
* behaves.
*
* A session type of #SHELL_SESSION_USER means gnome-shell
* will enable the activities overview, status menu, run dialog,
* etc. This is the default.
*
* A session type of #SHELL_SESSION_GDM means gnome-shell
* will enable a login dialog and run in a more confined
* way. This type is suitable for the display manager.
*
* Returns the type of session gnome-shell is providing.
*/
ShellSessionType
shell_global_get_session_type (ShellGlobal *global)
{
g_return_val_if_fail (SHELL_IS_GLOBAL (global),
SHELL_SESSION_USER);
return global->session_type;
}
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