brl/gnome-shell
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
e3b839360a
gnome-shell/src/shell-window-tracker.c
Colin Walters 22948b3d39 Merge St.TextureCache and Shell.TextureCache 
Brute force merge these two by essentially replacing St.TextureCache
with a (renamed) Shell.TextureCache.

One function was added for convenience, namely "st_texture_cache_load_file_simple".
St.TextureCache had a function to load a texture from a filename, and it
returned NULL on error but only half the callers actually checked this.  This
function is better.

https://bugzilla.gnome.org/show_bug.cgi?id=607500
2010-03-05 16:19:40 -05:00

872 lines
24 KiB
C
Raw Blame History

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#define SN_API_NOT_YET_FROZEN 1
#include <libsn/sn.h>
#include "shell-window-tracker.h"
#include "shell-app-system.h"
#include "shell-app-private.h"
#include "st/st-texture-cache.h"
#include "shell-global.h"
#include "shell-marshal.h"
#include "display.h"
#include "window.h"
#include "group.h"
#include "util.h"
/* This file includes modified code from
* desktop-data-engine/engine-dbus/hippo-application-monitor.c
* in the functions collecting application usage data.
* Written by Owen Taylor, originally licensed under LGPL 2.1.
* Copyright Red Hat, Inc. 2006-2008
*/
/**
* SECTION:shell-window-tracker
* @short_description: Associate windows with applications
*
* Maintains a mapping from windows to applications (.desktop file ids).
* It currently implements this with some heuristics on the WM_CLASS X11
* property (and some static override regexps); in the future, we want to
* have it also track through startup-notification.
*/
/* Title patterns to detect apps that don't set WM class as needed.
* Format: application ID, title regex pattern, NULL (for GRegex) */
static struct
{
const char *app_id;
const char *pattern;
GRegex *regex;
} title_patterns[] = {
{"mozilla-firefox.desktop", ".* - Mozilla Firefox", NULL}, \
{"openoffice.org-writer.desktop", ".* - OpenOffice.org Writer$", NULL}, \
{"openoffice.org-calc.desktop", ".* - OpenOffice.org Calc$", NULL}, \
{"openoffice.org-impress.desktop", ".* - OpenOffice.org Impress$", NULL}, \
{"openoffice.org-draw.desktop", ".* - OpenOffice.org Draw$", NULL}, \
{"openoffice.org-base.desktop", ".* - OpenOffice.org Base$", NULL}, \
{"openoffice.org-math.desktop", ".* - OpenOffice.org Math$", NULL}, \
{NULL, NULL, NULL}
};
struct _ShellWindowTracker
{
GObject parent;
guint idle_focus_change_id;
ShellApp *focus_app;
/* <MetaWindow * window, ShellApp *app> */
GHashTable *window_to_app;
/* <const char *id, ShellApp *app> */
GHashTable *running_apps;
};
G_DEFINE_TYPE (ShellWindowTracker, shell_window_tracker, G_TYPE_OBJECT);
enum {
PROP_0,
PROP_FOCUS_APP
};
enum {
APP_RUNNING_CHANGED,
STARTUP_SEQUENCE_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
static void shell_window_tracker_finalize (GObject *object);
static void on_focus_window_changed (MetaDisplay *display, GParamSpec *spec, ShellWindowTracker *tracker);
static void track_window (ShellWindowTracker *monitor, MetaWindow *window);
static void disassociate_window (ShellWindowTracker *monitor, MetaWindow *window);
static void
shell_window_tracker_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ShellWindowTracker *tracker = SHELL_WINDOW_TRACKER (gobject);
switch (prop_id)
{
case PROP_FOCUS_APP:
g_value_set_object (value, tracker->focus_app);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
shell_window_tracker_class_init (ShellWindowTrackerClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = shell_window_tracker_get_property;
gobject_class->finalize = shell_window_tracker_finalize;
g_object_class_install_property (gobject_class,
PROP_FOCUS_APP,
g_param_spec_object ("focus-app",
"Focus App",
"Focused application",
SHELL_TYPE_APP,
G_PARAM_READABLE));
signals[APP_RUNNING_CHANGED] = g_signal_new ("app-running-changed",
SHELL_TYPE_WINDOW_TRACKER,
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
SHELL_TYPE_APP);
signals[STARTUP_SEQUENCE_CHANGED] = g_signal_new ("startup-sequence-changed",
SHELL_TYPE_WINDOW_TRACKER,
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__BOXED,
G_TYPE_NONE, 1, SHELL_TYPE_STARTUP_SEQUENCE);
}
/**
* get_app_id_from_title:
*
* Use a window's "title" property to determine an application ID.
* This is a temporary crutch for a few applications until we get
* them correctly setting their WM_CLASS.
*/
static const char *
get_app_id_from_title (MetaWindow *window)
{
static gboolean patterns_initialized = FALSE;
const char *title;
int i;
title = meta_window_get_title (window);
if (!patterns_initialized) /* Generate match patterns once for all */
{
patterns_initialized = TRUE;
for (i = 0; title_patterns[i].app_id; i++)
{
title_patterns[i].regex = g_regex_new (title_patterns[i].pattern,
0, 0, NULL);
}
}
/* Match window title patterns to identifiers for non-standard apps */
if (title)
{
for (i = 0; title_patterns[i].app_id; i++)
{
if (g_regex_match (title_patterns[i].regex, title, 0, NULL))
{
/* Matched, return the app id we want */
return title_patterns[i].app_id;
}
}
}
return NULL;
}
/**
* get_appid_from_window:
*
* Turn the WM_CLASS property into our best guess at a .desktop file id.
*/
static char *
get_appid_from_window (MetaWindow *window)
{
const char *wmclass;
char *appid_guess;
wmclass = meta_window_get_wm_class (window);
if (!wmclass)
return NULL;
appid_guess = g_ascii_strdown (wmclass, -1);
/* This handles "Fedora Eclipse", probably others.
* Note g_strdelimit is modify-in-place. */
g_strdelimit (appid_guess, " ", '-');
return appid_guess;
}
/**
* window_is_tracked:
*
* We don't attempt to associate override-redirect windows with applications
* at all, since there's no reason to do so yet.
*
* Returns: %TRUE iff we want to scan this window for application association
*/
static gboolean
window_is_tracked (MetaWindow *window)
{
if (meta_window_is_override_redirect (window))
return FALSE;
return TRUE;
}
/**
* shell_window_tracker_is_window_interesting:
*
* The ShellWindowTracker associates certain kinds of windows with
* applications; however, others we don't want to
* appear in places where we want to give a list of windows
* for an application, such as the alt-tab dialog.
*
* An example of a window we don't want to show is the root
* desktop window. We skip all override-redirect types, and also
* exclude other window types like tooltip explicitly, though generally
* most of these should be override-redirect.
*
* Returns: %TRUE iff a window is "interesting"
*/
gboolean
shell_window_tracker_is_window_interesting (MetaWindow *window)
{
if (!window_is_tracked (window))
return FALSE;
if (meta_window_is_skip_taskbar (window))
return FALSE;
switch (meta_window_get_window_type (window))
{
/* Definitely ignore these. */
case META_WINDOW_DESKTOP:
case META_WINDOW_DOCK:
case META_WINDOW_SPLASHSCREEN:
/* Should have already been handled by override_redirect above,
* but explicitly list here so we get the "unhandled enum"
* warning if in the future anything is added.*/
case META_WINDOW_DROPDOWN_MENU:
case META_WINDOW_POPUP_MENU:
case META_WINDOW_TOOLTIP:
case META_WINDOW_NOTIFICATION:
case META_WINDOW_COMBO:
case META_WINDOW_DND:
case META_WINDOW_OVERRIDE_OTHER:
return FALSE;
case META_WINDOW_NORMAL:
case META_WINDOW_DIALOG:
case META_WINDOW_MODAL_DIALOG:
case META_WINDOW_MENU:
case META_WINDOW_TOOLBAR:
case META_WINDOW_UTILITY:
break;
}
return TRUE;
}
/**
* get_app_for_window_direct:
*
* Looks only at the given window, and attempts to determine
* an application based on WM_CLASS. If that fails, then
* a "transient" application is created.
*
* Return value: (transfer full): A newly-referenced #ShellApp
*/
static ShellApp *
get_app_for_window_direct (MetaWindow *window)
{
ShellApp *app;
ShellAppSystem *appsys;
char *wmclass;
char *with_desktop;
appsys = shell_app_system_get_default ();
wmclass = get_appid_from_window (window);
if (!wmclass)
return shell_app_system_get_app_for_window (appsys, window);
with_desktop = g_strjoin (NULL, wmclass, ".desktop", NULL);
g_free (wmclass);
app = shell_app_system_lookup_heuristic_basename (appsys, with_desktop);
g_free (with_desktop);
if (app == NULL)
{
const char *id = get_app_id_from_title (window);
if (id != NULL)
app = shell_app_system_get_app (appsys, id);
}
if (app == NULL)
app = shell_app_system_get_app_for_window (appsys, window);
return app;
}
/**
* get_app_for_window:
*
* Determines the application associated with a window, using
* all available information such as the window's MetaGroup,
* and what we know about other windows.
*/
static ShellApp *
get_app_for_window (ShellWindowTracker *monitor,
MetaWindow *window)
{
ShellApp *result;
MetaWindow *source_window;
GSList *group_windows;
MetaGroup *group;
GSList *iter;
result = NULL;
if (meta_window_get_window_type (window) == META_WINDOW_NORMAL)
{
result = g_hash_table_lookup (monitor->window_to_app, window);
if (result != NULL)
{
g_object_ref (result);
return result;
}
else
return get_app_for_window_direct (window);
}
group = meta_window_get_group (window);
if (group == NULL)
group_windows = g_slist_prepend (NULL, window);
else
group_windows = meta_group_list_windows (group);
source_window = window;
result = NULL;
/* Try finding a window in the group of type NORMAL; if we
* succeed, use that as our source. */
for (iter = group_windows; iter; iter = iter->next)
{
MetaWindow *group_window = iter->data;
if (meta_window_get_window_type (group_window) != META_WINDOW_NORMAL)
continue;
source_window = group_window;
result = g_hash_table_lookup (monitor->window_to_app, group_window);
if (result)
break;
}
g_slist_free (group_windows);
if (result != NULL)
{
g_object_ref (result);
return result;
}
return get_app_for_window_direct (source_window);
}
const char *
_shell_window_tracker_get_app_context (ShellWindowTracker *tracker, ShellApp *app)
{
return "";
}
static void
on_transient_window_title_changed (MetaWindow *window,
GParamSpec *spec,
ShellWindowTracker *self)
{
ShellAppSystem *appsys;
ShellApp *app;
const char *id;
/* Check if we now have a mapping using the window title */
id = get_app_id_from_title (window);
if (id == NULL)
return;
appsys = shell_app_system_get_default ();
app = shell_app_system_get_app (appsys, id);
if (app == NULL)
return;
g_object_unref (app);
/* We found an app, don't listen for further title changes */
g_signal_handlers_disconnect_by_func (window, G_CALLBACK (on_transient_window_title_changed),
self);
/* It's simplest to just treat this as a remove + add. */
disassociate_window (self, window);
track_window (self, window);
}
static void
track_window (ShellWindowTracker *self,
MetaWindow *window)
{
ShellApp *app;
if (!window_is_tracked (window))
return;
app = get_app_for_window (self, window);
if (!app)
return;
/* At this point we've stored the association from window -> application */
g_hash_table_insert (self->window_to_app, window, app);
/* However, only put interesting windows in the window list for an app. */
if (!shell_window_tracker_is_window_interesting (window))
return;
if (shell_app_is_transient (app))
{
/* For a transient application, it's possible one of our title regexps
* will match at a later time, i.e. the application may not have set
* its title fully at the time it initially maps a window. Watch
* for title changes and recompute the app.
*/
g_signal_connect (window, "notify::title", G_CALLBACK (on_transient_window_title_changed), self);
}
_shell_app_add_window (app, window);
if (shell_app_get_n_windows (app) == 1)
{
/* key is owned by the app */
g_hash_table_insert (self->running_apps, (char*)shell_app_get_id (app),
app);
g_signal_emit (self, signals[APP_RUNNING_CHANGED], 0, app);
}
}
static void
shell_window_tracker_on_window_added (MetaWorkspace *workspace,
MetaWindow *window,
gpointer user_data)
{
ShellWindowTracker *self = SHELL_WINDOW_TRACKER (user_data);
track_window (self, window);
}
static void
disassociate_window (ShellWindowTracker *self,
MetaWindow *window)
{
ShellApp *app;
app = g_hash_table_lookup (self->window_to_app, window);
if (!app)
return;
g_object_ref (app);
g_hash_table_remove (self->window_to_app, window);
_shell_app_remove_window (app, window);
if (shell_app_get_n_windows (app) == 0)
{
const char *id = shell_app_get_id (app);
g_hash_table_remove (self->running_apps, id);
g_signal_emit (self, signals[APP_RUNNING_CHANGED], 0, app);
}
g_object_unref (app);
}
static void
shell_window_tracker_on_window_removed (MetaWorkspace *workspace,
MetaWindow *window,
gpointer user_data)
{
disassociate_window (SHELL_WINDOW_TRACKER (user_data), window);
}
static void
load_initial_windows (ShellWindowTracker *monitor)
{
GList *workspaces, *iter;
MetaScreen *screen = shell_global_get_screen (shell_global_get ());
workspaces = meta_screen_get_workspaces (screen);
for (iter = workspaces; iter; iter = iter->next)
{
MetaWorkspace *workspace = iter->data;
GList *windows = meta_workspace_list_windows (workspace);
GList *window_iter;
for (window_iter = windows; window_iter; window_iter = window_iter->next)
{
MetaWindow *window = window_iter->data;
track_window (monitor, window);
}
g_list_free (windows);
}
}
static void
shell_window_tracker_on_n_workspaces_changed (MetaScreen *screen,
GParamSpec *pspec,
gpointer user_data)
{
ShellWindowTracker *self = SHELL_WINDOW_TRACKER (user_data);
GList *workspaces, *iter;
workspaces = meta_screen_get_workspaces (screen);
for (iter = workspaces; iter; iter = iter->next)
{
MetaWorkspace *workspace = iter->data;
/* This pair of disconnect/connect is idempotent if we were
* already connected, while ensuring we get connected for
* new workspaces.
*/
g_signal_handlers_disconnect_by_func (workspace,
shell_window_tracker_on_window_added,
self);
g_signal_handlers_disconnect_by_func (workspace,
shell_window_tracker_on_window_removed,
self);
g_signal_connect (workspace, "window-added",
G_CALLBACK (shell_window_tracker_on_window_added), self);
g_signal_connect (workspace, "window-removed",
G_CALLBACK (shell_window_tracker_on_window_removed), self);
}
}
static void
init_window_tracking (ShellWindowTracker *self)
{
MetaDisplay *display;
MetaScreen *screen = shell_global_get_screen (shell_global_get ());
g_signal_connect (screen, "notify::n-workspaces",
G_CALLBACK (shell_window_tracker_on_n_workspaces_changed), self);
display = meta_screen_get_display (screen);
g_signal_connect (display, "notify::focus-window",
G_CALLBACK (on_focus_window_changed), self);
shell_window_tracker_on_n_workspaces_changed (screen, NULL, self);
}
static void
on_startup_sequence_changed (MetaScreen *screen,
SnStartupSequence *sequence,
ShellWindowTracker *self)
{
/* Just proxy the signal */
g_signal_emit (G_OBJECT (self), signals[STARTUP_SEQUENCE_CHANGED], 0, sequence);
}
static void
shell_window_tracker_init (ShellWindowTracker *self)
{
MetaScreen *screen;
self->window_to_app = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL, (GDestroyNotify) g_object_unref);
self->running_apps = g_hash_table_new (g_str_hash, g_str_equal);
screen = shell_global_get_screen (shell_global_get ());
g_signal_connect (G_OBJECT (screen), "startup-sequence-changed",
G_CALLBACK (on_startup_sequence_changed), self);
load_initial_windows (self);
init_window_tracking (self);
}
static void
shell_window_tracker_finalize (GObject *object)
{
ShellWindowTracker *self = SHELL_WINDOW_TRACKER (object);
int i;
g_hash_table_destroy (self->running_apps);
g_hash_table_destroy (self->window_to_app);
for (i = 0; title_patterns[i].app_id; i++)
g_regex_unref (title_patterns[i].regex);
G_OBJECT_CLASS (shell_window_tracker_parent_class)->finalize(object);
}
/**
* shell_window_tracker_get_window_app
* @monitor: An app monitor instance
* @metawin: A #MetaWindow
*
* Returns: (transfer full): Application associated with window
*/
ShellApp *
shell_window_tracker_get_window_app (ShellWindowTracker *monitor,
MetaWindow *metawin)
{
MetaWindow *transient_for;
ShellApp *app;
transient_for = meta_window_get_transient_for (metawin);
if (transient_for != NULL)
metawin = transient_for;
app = g_hash_table_lookup (monitor->window_to_app, metawin);
if (app)
g_object_ref (app);
return app;
}
/**
* shell_app_system_get_from_pid:
* @self; A #ShellAppSystem
* @pid: A Unix process identifier
*
* Look up the application corresponding to a process.
*
* Returns: (transfer full): A #ShellApp, or %NULL if none
*/
ShellApp *
shell_window_tracker_get_app_from_pid (ShellWindowTracker *self,
int pid)
{
ShellGlobal *global = shell_global_get ();
GList *windows, *iter;
windows = shell_global_get_windows (global);
for (iter = windows; iter; iter = iter->next)
{
MutterWindow *win = iter->data;
MetaWindow *metawin;
int windowpid;
ShellApp *app;
metawin = mutter_window_get_meta_window (win);
windowpid = meta_window_get_pid (metawin);
if (windowpid != pid)
continue;
app = shell_window_tracker_get_window_app (self, metawin);
if (app)
return app;
}
return NULL;
}
/**
* shell_window_tracker_get_running_apps:
* @monitor: An app monitor instance
* @context: Activity identifier
*
* Returns the set of applications which currently have at least one open
* window in the given context. The returned list will be sorted
* by shell_app_compare().
*
* Returns: (element-type ShellApp) (transfer full): Active applications
*/
GSList *
shell_window_tracker_get_running_apps (ShellWindowTracker *monitor,
const char *context)
{
gpointer key, value;
GSList *ret;
GHashTableIter iter;
g_hash_table_iter_init (&iter, monitor->running_apps);
ret = NULL;
while (g_hash_table_iter_next (&iter, &key, &value))
{
ShellApp *app = value;
if (strcmp (context, _shell_window_tracker_get_app_context (monitor, app)) != 0)
continue;
ret = g_slist_prepend (ret, g_object_ref (app));
}
ret = g_slist_sort (ret, (GCompareFunc)shell_app_compare);
return ret;
}
static gboolean
idle_handle_focus_change (gpointer data)
{
MetaScreen *screen;
MetaDisplay *display;
ShellWindowTracker *tracker = data;
MetaWindow *new_focus_win;
ShellApp *new_focus_app;
tracker->idle_focus_change_id = 0;
screen = shell_global_get_screen (shell_global_get ());
display = meta_screen_get_display (screen);
new_focus_win = meta_display_get_focus_window (display);
new_focus_app = new_focus_win ? g_hash_table_lookup (tracker->window_to_app, new_focus_win) : NULL;
if (new_focus_app == tracker->focus_app)
return FALSE;
if (tracker->focus_app != NULL)
g_object_unref (tracker->focus_app);
if (tracker->focus_app != NULL
&& (!new_focus_win || !new_focus_app))
tracker->focus_app = NULL;
else
tracker->focus_app = g_object_ref (new_focus_app);
g_object_notify (G_OBJECT (tracker), "focus-app");
return FALSE;
}
static void
on_focus_window_changed (MetaDisplay *display,
GParamSpec *spec,
ShellWindowTracker *self)
{
if (self->idle_focus_change_id != 0)
return;
self->idle_focus_change_id = meta_later_add (META_LATER_BEFORE_REDRAW, idle_handle_focus_change, self, NULL);
}
/**
* shell_window_tracker_get_startup_sequences:
* @self:
*
* Returns: (transfer none) (element-type ShellStartupSequence): Currently active startup sequences
*/
GSList *
shell_window_tracker_get_startup_sequences (ShellWindowTracker *self)
{
ShellGlobal *global = shell_global_get ();
MetaScreen *screen = shell_global_get_screen (global);
return meta_screen_get_startup_sequences (screen);
}
/* sn_startup_sequence_ref returns void, so make a
* wrapper which returns self */
static SnStartupSequence *
sequence_ref (SnStartupSequence *sequence)
{
sn_startup_sequence_ref (sequence);
return sequence;
}
GType
shell_startup_sequence_get_type (void)
{
static GType gtype = G_TYPE_INVALID;
if (gtype == G_TYPE_INVALID)
{
gtype = g_boxed_type_register_static ("ShellStartupSequence",
(GBoxedCopyFunc)sequence_ref,
(GBoxedFreeFunc)sn_startup_sequence_unref);
}
return gtype;
}
const char *
shell_startup_sequence_get_id (ShellStartupSequence *sequence)
{
return sn_startup_sequence_get_id ((SnStartupSequence*)sequence);
}
const char *
shell_startup_sequence_get_name (ShellStartupSequence *sequence)
{
return sn_startup_sequence_get_name ((SnStartupSequence*)sequence);
}
gboolean
shell_startup_sequence_get_completed (ShellStartupSequence *sequence)
{
return sn_startup_sequence_get_completed ((SnStartupSequence*)sequence);
}
/**
* shell_startup_sequence_create_icon:
* @sequence:
* @size: Size in pixels of icon
*
* Returns: (transfer none): A new #ClutterTexture containing an icon for the sequence
*/
ClutterActor *
shell_startup_sequence_create_icon (ShellStartupSequence *sequence, guint size)
{
GIcon *themed;
const char *icon_name;
ClutterActor *texture;
icon_name = sn_startup_sequence_get_icon_name ((SnStartupSequence*)sequence);
if (!icon_name)
{
texture = clutter_texture_new ();
clutter_actor_set_size (texture, size, size);
return texture;
}
themed = g_themed_icon_new (icon_name);
texture = st_texture_cache_load_gicon (st_texture_cache_get_default (),
themed, size);
g_object_unref (G_OBJECT (themed));
return texture;
}
/**
* shell_window_tracker_get_default:
*
* Return Value: (transfer none): The global #ShellWindowTracker instance
*/
ShellWindowTracker *
shell_window_tracker_get_default ()
{
static ShellWindowTracker *instance;
if (instance == NULL)
instance = g_object_new (SHELL_TYPE_WINDOW_TRACKER, NULL);
return instance;
}
Reference in New Issue View Git Blame Copy Permalink