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cinnamon-app.c
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cinnamon-app.c
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include "config.h"
#include <string.h>
#include <glib/gi18n-lib.h>
#include <glib/gstdio.h>
#define GMENU_I_KNOW_THIS_IS_UNSTABLE
#include <gmenu-desktopappinfo.h>
#include <meta/display.h>
#include <meta/meta-workspace-manager.h>
#include "cinnamon-app-private.h"
#include "cinnamon-enum-types.h"
#include "cinnamon-global-private.h"
#include "cinnamon-util.h"
#include "cinnamon-app-system-private.h"
#include "cinnamon-window-tracker-private.h"
#include "st.h"
/* This is mainly a memory usage optimization - the user is going to
* be running far fewer of the applications at one time than they have
* installed. But it also just helps keep the code more logically
* separated.
*/
typedef struct {
guint refcount;
/* Signal connection to dirty window sort list on workspace changes */
guint workspace_switch_id;
GSList *windows;
/* Whether or not we need to resort the windows; this is done on demand */
guint window_sort_stale : 1;
} CinnamonAppRunningState;
/**
* SECTION:cinnamon-app
* @short_description: Object representing an application
*
* This object wraps a #GMenuTreeEntry, providing methods and signals
* primarily useful for running applications.
*/
struct _CinnamonApp
{
GObject parent;
CinnamonGlobal *global;
int started_on_workspace;
CinnamonAppState state;
GMenuTreeEntry *entry; /* If NULL, this app is backed by one or more
* MetaWindow. For purposes of app title
* etc., we use the first window added,
* because it's most likely to be what we
* want (e.g. it will be of TYPE_NORMAL from
* the way cinnamon-window-tracker.c works).
*/
GMenuDesktopAppInfo *info;
CinnamonAppRunningState *running_state;
char *window_id_string;
char *keywords;
char *unique_name;
gboolean hidden_as_duplicate;
gboolean is_flatpak;
};
G_DEFINE_TYPE (CinnamonApp, cinnamon_app, G_TYPE_OBJECT);
enum {
PROP_0,
PROP_STATE
};
enum {
WINDOWS_CHANGED,
LAST_SIGNAL
};
static guint cinnamon_app_signals[LAST_SIGNAL] = { 0 };
static void create_running_state (CinnamonApp *app);
static void unref_running_state (CinnamonAppRunningState *state);
static void
cinnamon_app_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
CinnamonApp *app = CINNAMON_APP (gobject);
switch (prop_id)
{
case PROP_STATE:
g_value_set_enum (value, app->state);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
const char *
cinnamon_app_get_id (CinnamonApp *app)
{
if (app->entry)
return gmenu_tree_entry_get_desktop_file_id (app->entry);
return app->window_id_string;
}
char *
cinnamon_app_get_flatpak_app_id (CinnamonApp *app)
{
if (app->info)
{
gchar *id;
id = g_strdup (gmenu_desktopappinfo_get_flatpak_app_id (app->info));
if (id != NULL)
{
return id;
}
else
{
const gchar *desktop_file = cinnamon_app_get_id (app);
gchar **split = g_strsplit (desktop_file, ".desktop", -1);
id = g_strdup (split[0]);
g_strfreev (split);
return id;
}
}
// This should never occur
return NULL;
}
static MetaWindow *
window_backed_app_get_window (CinnamonApp *app)
{
g_assert (app->info == NULL);
if (app->running_state)
{
g_assert (app->running_state->windows);
return app->running_state->windows->data;
}
else
return NULL;
}
static ClutterActor *
get_actor_for_icon_name (CinnamonApp *app,
const gchar *icon_name,
gint size)
{
ClutterActor *actor;
GIcon *icon;
icon = NULL;
actor = NULL;
if (g_path_is_absolute (icon_name))
{
GFile *icon_file;
icon_file = g_file_new_for_path (icon_name);
icon = g_file_icon_new (icon_file);
g_object_unref (icon_file);
}
else
{
icon = g_themed_icon_new (icon_name);
}
if (icon != NULL)
{
actor = g_object_new (ST_TYPE_ICON, "gicon", icon, "icon-size", size, NULL);
g_object_unref (icon);
}
return actor;
}
static ClutterActor *
get_failsafe_icon (int size)
{
GIcon *icon = g_themed_icon_new ("application-x-executable");
ClutterActor *actor = g_object_new (ST_TYPE_ICON, "gicon", icon, "icon-size", size, NULL);
g_object_unref (icon);
return actor;
}
static ClutterActor *
window_backed_app_get_icon (CinnamonApp *app,
int size)
{
MetaWindow *window = NULL;
StWidget *widget;
int scale, scaled_size;
CinnamonGlobal *global;
StThemeContext *context;
global = cinnamon_global_get ();
context = st_theme_context_get_for_stage (cinnamon_global_get_stage (global));
g_object_get (context, "scale-factor", &scale, NULL);
scaled_size = size * scale;
/* During a state transition from running to not-running for
* window-backend apps, it's possible we get a request for the icon.
* Avoid asserting here and just return an empty image.
*/
if (app->running_state != NULL)
window = window_backed_app_get_window (app);
if (window == NULL)
{
ClutterActor *actor;
actor = clutter_actor_new ();
g_object_set (actor,
"opacity", 0,
"width", (float) scaled_size,
"height", (float) scaled_size,
NULL);
return actor;
}
widget = NULL;
if (meta_window_get_client_type (window) == META_WINDOW_CLIENT_TYPE_X11)
{
cairo_surface_t *icon;
g_object_get (G_OBJECT (window), "icon", &icon, NULL);
if (icon != NULL)
{
StWidget *texture_actor;
texture_actor =
st_texture_cache_bind_cairo_surface_property (st_texture_cache_get_default (),
G_OBJECT (window),
"icon",
scaled_size);
widget = g_object_new (ST_TYPE_BIN,
"child", texture_actor,
NULL);
}
}
if (widget == NULL)
{
widget = g_object_new (ST_TYPE_ICON,
"icon-size", size,
"icon-type", ST_ICON_FULLCOLOR,
"icon-name", "application-x-executable",
NULL);
}
st_widget_add_style_class_name (widget, "fallback-app-icon");
return CLUTTER_ACTOR (widget);
}
/**
* cinnamon_app_create_icon_texture:
*
* Look up the icon for this application, and create a #ClutterActor
* for it at the given size.
*
* Return value: (transfer none): A floating #ClutterActor
*/
ClutterActor *
cinnamon_app_create_icon_texture (CinnamonApp *app,
int size)
{
GIcon *icon;
ClutterActor *ret;
ret = NULL;
if (app->info == NULL)
return window_backed_app_get_icon (app, size);
icon = g_app_info_get_icon (G_APP_INFO (app->info));
if (icon != NULL)
ret = g_object_new (ST_TYPE_ICON, "gicon", icon, "icon-size", size, NULL);
if (ret == NULL)
ret = get_failsafe_icon (size);
return ret;
}
/**
* cinnamon_app_create_icon_texture_for_window:
* @app: a #CinnamonApp
* @size: the size of the icon to create
* @for_window: (nullable): Optional - the backing MetaWindow to look up for.
*
* Look up the icon for this application, and create a #ClutterTexture
* for it at the given size. If for_window is NULL, it bases the icon
* off the most-recently-used window for the app, otherwise it attempts to
* use for_window for determining the icon.
*
* Return value: (transfer none): A floating #ClutterActor
*/
ClutterActor *
cinnamon_app_create_icon_texture_for_window (CinnamonApp *app,
int size,
MetaWindow *for_window)
{
MetaWindow *window;
window = NULL;
if (app->running_state != NULL)
{
const gchar *icon_name;
if (for_window != NULL)
{
if (g_slist_find (app->running_state->windows, for_window) != NULL)
{
window = for_window;
}
else
{
g_warning ("cinnamon_app_create_icon_texture: MetaWindow %p provided that does not match App %p",
for_window, app);
}
}
if (window != NULL)
{
icon_name = meta_window_get_icon_name (window);
if (icon_name != NULL)
{
return get_actor_for_icon_name (app, icon_name, size);
}
}
}
return cinnamon_app_create_icon_texture (app, size);
}
static const char *
get_common_name (CinnamonApp *app)
{
if (app->entry)
return g_app_info_get_name (G_APP_INFO (app->info));
else if (app->running_state == NULL)
return _("Unknown");
else
{
MetaWindow *window = window_backed_app_get_window (app);
const char *name = NULL;
if (window)
name = meta_window_get_wm_class (window);
if (!name)
name = _("Unknown");
return name;
}
}
const char *
cinnamon_app_get_name (CinnamonApp *app)
{
if (app->unique_name)
return app->unique_name;
return get_common_name (app);
}
const char *
cinnamon_app_get_description (CinnamonApp *app)
{
if (app->entry)
return g_app_info_get_description (G_APP_INFO (app->info));
else
return NULL;
}
const char *
cinnamon_app_get_keywords (CinnamonApp *app)
{
const char * const *keywords;
const char *keyword;
gint i;
gchar *ret = NULL;
if (app->keywords)
return app->keywords;
if (app->info)
keywords = gmenu_desktopappinfo_get_keywords (app->info);
else
keywords = NULL;
if (keywords != NULL)
{
GString *keyword_list = g_string_new(NULL);
for (i = 0; keywords[i] != NULL; i++)
{
keyword = keywords[i];
g_string_append_printf (keyword_list, "%s;", keyword);
}
ret = g_string_free (keyword_list, FALSE);
}
app->keywords = ret;
return ret;
}
gboolean
cinnamon_app_get_nodisplay (CinnamonApp *app)
{
if (app->hidden_as_duplicate)
{
return TRUE;
}
if (app->entry)
{
g_return_val_if_fail (app->info != NULL, TRUE);
return gmenu_desktopappinfo_get_nodisplay (app->info);
// return !g_app_info_should_show (G_APP_INFO (app->info));
}
return FALSE;
}
/**
* cinnamon_app_is_window_backed:
*
* A window backed application is one which represents just an open
* window, i.e. there's no .desktop file association, so we don't know
* how to launch it again.
*/
gboolean
cinnamon_app_is_window_backed (CinnamonApp *app)
{
return app->entry == NULL;
}
typedef struct {
MetaWorkspace *workspace;
GSList **transients;
} CollectTransientsData;
static gboolean
collect_transients_on_workspace (MetaWindow *window,
gpointer datap)
{
CollectTransientsData *data = datap;
if (data->workspace && meta_window_get_workspace (window) != data->workspace)
return TRUE;
*data->transients = g_slist_prepend (*data->transients, window);
return TRUE;
}
/* The basic idea here is that when we're targeting a window,
* if it has transients we want to pick the most recent one
* the user interacted with.
* This function makes raising GEdit with the file chooser
* open work correctly.
*/
static MetaWindow *
find_most_recent_transient_on_same_workspace (MetaDisplay *display,
MetaWindow *reference)
{
GSList *transients, *transients_sorted, *iter;
MetaWindow *result;
CollectTransientsData data;
transients = NULL;
data.workspace = meta_window_get_workspace (reference);
data.transients = &transients;
meta_window_foreach_transient (reference, collect_transients_on_workspace, &data);
transients_sorted = meta_display_sort_windows_by_stacking (display, transients);
/* Reverse this so we're top-to-bottom (yes, we should probably change the order
* returned from the sort_windows_by_stacking function)
*/
transients_sorted = g_slist_reverse (transients_sorted);
g_slist_free (transients);
transients = NULL;
result = NULL;
for (iter = transients_sorted; iter; iter = iter->next)
{
MetaWindow *window = iter->data;
MetaWindowType wintype = meta_window_get_window_type (window);
/* Don't want to focus UTILITY types, like the Gimp toolbars */
if (wintype == META_WINDOW_NORMAL ||
wintype == META_WINDOW_DIALOG)
{
result = window;
break;
}
}
g_slist_free (transients_sorted);
return result;
}
/**
* cinnamon_app_activate_window:
* @app: a #CinnamonApp
* @window: (nullable): Window to be focused
* @timestamp: Event timestamp
*
* Bring all windows for the given app to the foreground,
* but ensure that @window is on top. If @window is %NULL,
* the window with the most recent user time for the app
* will be used.
*
* This function has no effect if @app is not currently running.
*/
void
cinnamon_app_activate_window (CinnamonApp *app,
MetaWindow *window,
guint32 timestamp)
{
GSList *windows;
if (app->state != CINNAMON_APP_STATE_RUNNING)
return;
windows = cinnamon_app_get_windows (app);
if (window == NULL && windows)
window = windows->data;
if (!g_slist_find (windows, window))
return;
else
{
GSList *iter;
CinnamonGlobal *global = app->global;
MetaWorkspaceManager *workspace_manager = global->workspace_manager;
MetaDisplay *display = global->meta_display;
MetaWorkspace *active = meta_workspace_manager_get_active_workspace (workspace_manager);
MetaWorkspace *workspace = meta_window_get_workspace (window);
guint32 last_user_timestamp = meta_display_get_last_user_time (display);
MetaWindow *most_recent_transient;
if (meta_display_xserver_time_is_before (display, timestamp, last_user_timestamp))
{
meta_window_set_demands_attention (window);
return;
}
/* Now raise all the other windows for the app that are on
* the same workspace, in reverse order to preserve the stacking.
*/
for (iter = windows; iter; iter = iter->next)
{
MetaWindow *other_window = iter->data;
if (other_window != window)
meta_window_raise (other_window);
}
/* If we have a transient that the user's interacted with more recently than
* the window, pick that.
*/
most_recent_transient = find_most_recent_transient_on_same_workspace (display, window);
if (most_recent_transient
&& meta_display_xserver_time_is_before (display,
meta_window_get_user_time (window),
meta_window_get_user_time (most_recent_transient)))
window = most_recent_transient;
if (active != workspace)
meta_workspace_activate_with_focus (workspace, window, timestamp);
else
meta_window_activate (window, timestamp);
}
}
/**
* cinnamon_app_activate:
* @app: a #CinnamonApp
*
* Like cinnamon_app_activate_full(), but using the default workspace and
* event timestamp.
*/
void
cinnamon_app_activate (CinnamonApp *app)
{
return cinnamon_app_activate_full (app, -1, 0);
}
/**
* cinnamon_app_activate_full:
* @app: a #CinnamonApp
* @workspace: launch on this workspace, or -1 for default. Ignored if
* activating an existing window
* @timestamp: Event timestamp
*
* Perform an appropriate default action for operating on this application,
* dependent on its current state. For example, if the application is not
* currently running, launch it. If it is running, activate the most
* recently used NORMAL window (or if that window has a transient, the most
* recently used transient for that window).
*/
void
cinnamon_app_activate_full (CinnamonApp *app,
int workspace,
guint32 timestamp)
{
CinnamonGlobal *global;
global = app->global;
if (timestamp == 0)
timestamp = cinnamon_global_get_current_time (global);
switch (app->state)
{
case CINNAMON_APP_STATE_STOPPED:
{
GError *error = NULL;
if (!cinnamon_app_launch (app,
timestamp,
NULL,
workspace,
NULL,
&error))
{
char *msg;
msg = g_strdup_printf (_("Failed to launch '%s'"), cinnamon_app_get_name (app));
cinnamon_global_notify_error (global,
msg,
error->message);
g_free (msg);
g_clear_error (&error);
}
}
break;
case CINNAMON_APP_STATE_STARTING:
break;
case CINNAMON_APP_STATE_RUNNING:
cinnamon_app_activate_window (app, NULL, timestamp);
break;
default:
g_warning("cinnamon_app_activate_full: default case");
break;
}
}
/**
* cinnamon_app_open_new_window:
* @app: a #CinnamonApp
* @workspace: open on this workspace, or -1 for default
*
* Request that the application create a new window.
*/
void
cinnamon_app_open_new_window (CinnamonApp *app,
int workspace)
{
g_return_if_fail (app->entry != NULL);
/* Here we just always launch the application again, even if we know
* it was already running. For most applications this
* should have the effect of creating a new window, whether that's
* a second process (in the case of Calculator) or IPC to existing
* instance (Firefox). There are a few less-sensical cases such
* as say Pidgin. Ideally, we have the application express to us
* that it supports an explicit new-window action.
*/
cinnamon_app_launch (app,
0,
NULL,
workspace,
NULL,
NULL);
}
/**
* cinnamon_app_can_open_new_window:
* @app: a #CinnamonApp
*
* Returns %TRUE if the app supports opening a new window through
* cinnamon_app_open_new_window() (ie, if calling that function will
* result in actually opening a new window and not something else,
* like presenting the most recently active one)
*/
gboolean
cinnamon_app_can_open_new_window (CinnamonApp *app)
{
/* Apps that are not running can always open new windows, because
activating them would open the first one */
if (!app->running_state)
return TRUE;
/* If the app doesn't have a desktop file, then nothing is possible */
if (!app->info)
return FALSE;
/* If the app is explicitly telling us, then we know for sure */
if (gmenu_desktopappinfo_has_key (GMENU_DESKTOPAPPINFO (app->info),
"X-GNOME-SingleWindow"))
return !gmenu_desktopappinfo_get_boolean (GMENU_DESKTOPAPPINFO (app->info),
"X-GNOME-SingleWindow");
/* In all other cases, we don't have a reliable source of information
or a decent heuristic, so we err on the compatibility side and say
yes.
*/
return TRUE;
}
/**
* cinnamon_app_get_state:
* @app: a #CinnamonApp
*
* Returns: State of the application
*/
CinnamonAppState
cinnamon_app_get_state (CinnamonApp *app)
{
return app->state;
}
/**
* cinnamon_app_get_is_flatpak:
* @app: a #CinnamonApp
*
* Returns: TRUE if #app is a flatpak app, FALSE if not
*/
gboolean
cinnamon_app_get_is_flatpak (CinnamonApp *app)
{
return app->is_flatpak;
}
typedef struct {
CinnamonApp *app;
MetaWorkspace *active_workspace;
} CompareWindowsData;
static int
cinnamon_app_compare_windows (gconstpointer a,
gconstpointer b,
gpointer datap)
{
MetaWindow *win_a = (gpointer)a;
MetaWindow *win_b = (gpointer)b;
CompareWindowsData *data = datap;
gboolean ws_a, ws_b;
gboolean vis_a, vis_b;
ws_a = meta_window_get_workspace (win_a) == data->active_workspace;
ws_b = meta_window_get_workspace (win_b) == data->active_workspace;
if (ws_a && !ws_b)
return -1;
else if (!ws_a && ws_b)
return 1;
vis_a = meta_window_showing_on_its_workspace (win_a);
vis_b = meta_window_showing_on_its_workspace (win_b);
if (vis_a && !vis_b)
return -1;
else if (!vis_a && vis_b)
return 1;
return meta_window_get_user_time (win_b) - meta_window_get_user_time (win_a);
}
/**
* cinnamon_app_get_windows:
* @app:
*
* Get the toplevel, interesting windows which are associated with this
* application. The returned list will be sorted first by whether
* they're on the active workspace, then by whether they're visible,
* and finally by the time the user last interacted with them.
*
* Returns: (transfer none) (element-type MetaWindow): List of windows
*/
GSList *
cinnamon_app_get_windows (CinnamonApp *app)
{
if (app->running_state == NULL)
return NULL;
if (app->running_state->window_sort_stale)
{
CompareWindowsData data;
data.app = app;
data.active_workspace = meta_workspace_manager_get_active_workspace (app->global->workspace_manager);
app->running_state->windows = g_slist_sort_with_data (app->running_state->windows, cinnamon_app_compare_windows, &data);
app->running_state->window_sort_stale = FALSE;
}
return app->running_state->windows;
}
guint
cinnamon_app_get_n_windows (CinnamonApp *app)
{
if (app->running_state == NULL)
return 0;
return g_slist_length (app->running_state->windows);
}
gboolean
cinnamon_app_is_on_workspace (CinnamonApp *app,
MetaWorkspace *workspace)
{
GSList *iter;
if (app->state == CINNAMON_APP_STATE_STARTING)
{
if (app->started_on_workspace == -1 ||
meta_workspace_index (workspace) == app->started_on_workspace)
return TRUE;
else
return FALSE;
}
if (app->running_state == NULL)
return FALSE;
for (iter = app->running_state->windows; iter; iter = iter->next)
{
if (meta_window_get_workspace (iter->data) == workspace)
return TRUE;
}
return FALSE;
}
CinnamonApp *
_cinnamon_app_new_for_window (MetaWindow *window)
{
CinnamonApp *app;
app = g_object_new (CINNAMON_TYPE_APP, NULL);
app->window_id_string = g_strdup_printf ("window:%d", meta_window_get_stable_sequence (window));
_cinnamon_app_add_window (app, window);
return app;
}
CinnamonApp *
_cinnamon_app_new (GMenuTreeEntry *info)
{
CinnamonApp *app;
app = g_object_new (CINNAMON_TYPE_APP, NULL);
_cinnamon_app_set_entry (app, info);
return app;
}
void
_cinnamon_app_set_entry (CinnamonApp *app,
GMenuTreeEntry *entry)
{
g_clear_pointer (&app->entry, gmenu_tree_item_unref);
g_clear_object (&app->info);
/* If our entry has changed, our name may have as well, so clear
* anything set by appsys while deduplicating desktop items. */
g_clear_pointer (&app->unique_name, g_free);
app->hidden_as_duplicate = FALSE;
app->entry = gmenu_tree_item_ref (entry);
if (entry != NULL)
{
app->info = g_object_ref (gmenu_tree_entry_get_app_info (entry));
app->is_flatpak = app->info && gmenu_desktopappinfo_get_is_flatpak (app->info);
}
}
static void
cinnamon_app_state_transition (CinnamonApp *app,
CinnamonAppState state)
{
if (app->state == state)
return;
g_return_if_fail (!(app->state == CINNAMON_APP_STATE_RUNNING &&
state == CINNAMON_APP_STATE_STARTING));
app->state = state;
if (app->state == CINNAMON_APP_STATE_STOPPED && app->running_state)
{
unref_running_state (app->running_state);
app->running_state = NULL;
}
_cinnamon_app_system_notify_app_state_changed (cinnamon_app_system_get_default (), app);
g_object_notify (G_OBJECT (app), "state");
}
static void
cinnamon_app_on_unmanaged (MetaWindow *window,
CinnamonApp *app)
{
_cinnamon_app_remove_window (app, window);
}
static void
cinnamon_app_on_ws_switch (MetaWorkspaceManager *workspace_manager,
int from,
int to,
MetaMotionDirection direction,
gpointer data)
{
CinnamonApp *app = CINNAMON_APP (data);
g_assert (app->running_state != NULL);
app->running_state->window_sort_stale = TRUE;
g_signal_emit (app, cinnamon_app_signals[WINDOWS_CHANGED], 0);
}
void
_cinnamon_app_add_window (CinnamonApp *app,
MetaWindow *window)
{
if (app->running_state && g_slist_find (app->running_state->windows, window))
return;
g_object_freeze_notify (G_OBJECT (app));
if (!app->running_state)
create_running_state (app);
app->running_state->window_sort_stale = TRUE;
app->running_state->windows = g_slist_prepend (app->running_state->windows, g_object_ref (window));
g_signal_connect (window, "unmanaged", G_CALLBACK(cinnamon_app_on_unmanaged), app);
if (app->state != CINNAMON_APP_STATE_STARTING)
cinnamon_app_state_transition (app, CINNAMON_APP_STATE_RUNNING);
g_object_thaw_notify (G_OBJECT (app));
g_signal_emit (app, cinnamon_app_signals[WINDOWS_CHANGED], 0);
}
void
_cinnamon_app_remove_window (CinnamonApp *app,
MetaWindow *window)
{
g_assert (app->running_state != NULL);
if (!g_slist_find (app->running_state->windows, window))
return;
g_signal_handlers_disconnect_by_func (window, G_CALLBACK(cinnamon_app_on_unmanaged), app);
g_object_unref (window);
app->running_state->windows = g_slist_remove (app->running_state->windows, window);
if (app->running_state->windows == NULL)
cinnamon_app_state_transition (app, CINNAMON_APP_STATE_STOPPED);
g_signal_emit (app, cinnamon_app_signals[WINDOWS_CHANGED], 0);
}
/**
* cinnamon_app_get_pids:
* @app: a #CinnamonApp