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window: Add suspend state

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The 'suspend state' is meant to track whether a window is likely to be
visible any time soon. The hueristics for this are as follows:

 * If a window is hidden, it will enter the 'hidden' state.
 * If a window is visible, and unobscured, it will enter the 'active'
   state.
 * If a window is visible, but obscured by another window, it will enter
   the 'hidden' state.
 * If there is a mapped clone of a window, it will enter the 'active'
   state.
 * If the window has been in the 'hidden' state for 3 seconds, it will
   enter the 'suspended' state.

This will eventually be communicated to Wayland clients so that they can
change their behaviour to e.g. save power.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3019>
This commit is contained in:
Jonas Ådahl
2023-05-24 14:37:18 +02:00
committed by Marge Bot
parent 2d7a062913
commit 9a2c8b2592
10 changed files with 346 additions and 12 deletions
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118
src/core/window.c
View File

@ -104,6 +104,8 @@
#include <systemd/sd-login.h>
#endif
#include "meta-private-enum-types.h"
/* Windows that unmaximize to a size bigger than that fraction of the workarea
* will be scaled down to that size (while maintaining aspect ratio).
* Windows that cover an area greater then this size are automaximized on map.
@ -112,6 +114,8 @@
#define SNAP_SECURITY_LABEL_PREFIX "snap."
#define SUSPEND_HIDDEN_TIMEOUT_S 3
/* Each window has a "stamp" which is a non-recycled 64-bit ID. They
* start after the end of the XID space so that, for stacking
* we can keep a guint64 that represents one or the other
@ -166,6 +170,10 @@ static void initable_iface_init (GInitableIface *initable_iface);
typedef struct _MetaWindowPrivate
{
MetaQueueType queued_types;
MetaWindowSuspendState suspend_state;
int suspend_state_inhibitors;
guint suspend_timoeut_id;
} MetaWindowPrivate;
G_DEFINE_ABSTRACT_TYPE_WITH_CODE (MetaWindow, meta_window, G_TYPE_OBJECT,
@ -206,6 +214,7 @@ enum
PROP_DISPLAY,
PROP_EFFECT,
PROP_XWINDOW,
PROP_SUSPEND_STATE,
PROP_LAST,
};
@ -350,6 +359,7 @@ meta_window_get_property(GObject *object,
GParamSpec *pspec)
{
MetaWindow *win = META_WINDOW (object);
MetaWindowPrivate *priv = meta_window_get_instance_private (win);
switch (prop_id)
{
@ -437,6 +447,9 @@ meta_window_get_property(GObject *object,
case PROP_XWINDOW:
g_value_set_ulong (value, win->xwindow);
break;
case PROP_SUSPEND_STATE:
g_value_set_enum (value, priv->suspend_state);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -610,6 +623,14 @@ meta_window_class_init (MetaWindowClass *klass)
0, G_MAXULONG, 0,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);
obj_props[PROP_SUSPEND_STATE] =
g_param_spec_enum ("suspend-state",
"Suspend state",
"The suspend state of the window",
META_TYPE_WINDOW_SUSPEND_STATE,
META_WINDOW_SUSPEND_STATE_SUSPENDED,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, PROP_LAST, obj_props);
window_signals[WORKSPACE_CHANGED] =
@ -721,11 +742,14 @@ meta_window_class_init (MetaWindowClass *klass)
}
static void
meta_window_init (MetaWindow *self)
meta_window_init (MetaWindow *window)
{
self->stamp = next_window_stamp++;
meta_prefs_add_listener (prefs_changed_callback, self);
self->is_alive = TRUE;
MetaWindowPrivate *priv = meta_window_get_instance_private (window);
priv->suspend_state = META_WINDOW_SUSPEND_STATE_SUSPENDED;
window->stamp = next_window_stamp++;
meta_prefs_add_listener (prefs_changed_callback, window);
window->is_alive = TRUE;
}
static gboolean
@ -1398,12 +1422,14 @@ void
meta_window_unmanage (MetaWindow *window,
guint32 timestamp)
{
MetaWindowPrivate *priv = meta_window_get_instance_private (window);
MetaWorkspaceManager *workspace_manager = window->display->workspace_manager;
GList *tmp;
meta_verbose ("Unmanaging %s", window->desc);
window->unmanaging = TRUE;
g_clear_handle_id (&priv->suspend_timoeut_id, g_source_remove);
g_clear_handle_id (&window->unmanage_idle_id, g_source_remove);
g_clear_handle_id (&window->close_dialog_timeout_id, g_source_remove);
@ -2082,6 +2108,86 @@ meta_window_force_placement (MetaWindow *window,
window->denied_focus_and_not_transient = FALSE;
}
static gboolean
enter_suspend_state_cb (gpointer user_data)
{
MetaWindow *window = META_WINDOW (user_data);
MetaWindowPrivate *priv = meta_window_get_instance_private (window);
priv->suspend_timoeut_id = 0;
g_return_val_if_fail (priv->suspend_state == META_WINDOW_SUSPEND_STATE_HIDDEN,
G_SOURCE_REMOVE);
priv->suspend_state = META_WINDOW_SUSPEND_STATE_SUSPENDED;
g_object_notify_by_pspec (G_OBJECT (window), obj_props[PROP_SUSPEND_STATE]);
return G_SOURCE_REMOVE;
}
static void
update_suspend_state (MetaWindow *window)
{
MetaWindowPrivate *priv = meta_window_get_instance_private (window);
if (!window->hidden &&
priv->suspend_state_inhibitors > 0)
{
priv->suspend_state = META_WINDOW_SUSPEND_STATE_ACTIVE;
g_object_notify_by_pspec (G_OBJECT (window), obj_props[PROP_SUSPEND_STATE]);
g_clear_handle_id (&priv->suspend_timoeut_id, g_source_remove);
}
else if (priv->suspend_state == META_WINDOW_SUSPEND_STATE_ACTIVE)
{
priv->suspend_state = META_WINDOW_SUSPEND_STATE_HIDDEN;
g_object_notify_by_pspec (G_OBJECT (window), obj_props[PROP_SUSPEND_STATE]);
g_return_if_fail (!priv->suspend_timoeut_id);
priv->suspend_timoeut_id =
g_timeout_add_seconds (SUSPEND_HIDDEN_TIMEOUT_S,
enter_suspend_state_cb,
window);
}
}
void
meta_window_inhibit_suspend_state (MetaWindow *window)
{
MetaWindowPrivate *priv = meta_window_get_instance_private (window);
priv->suspend_state_inhibitors++;
if (priv->suspend_state_inhibitors == 1)
update_suspend_state (window);
}
void
meta_window_uninhibit_suspend_state (MetaWindow *window)
{
MetaWindowPrivate *priv = meta_window_get_instance_private (window);
g_return_if_fail (priv->suspend_state_inhibitors > 0);
priv->suspend_state_inhibitors--;
if (priv->suspend_state_inhibitors == 0)
update_suspend_state (window);
}
gboolean
meta_window_is_suspended (MetaWindow *window)
{
MetaWindowPrivate *priv = meta_window_get_instance_private (window);
switch (priv->suspend_state)
{
case META_WINDOW_SUSPEND_STATE_ACTIVE:
case META_WINDOW_SUSPEND_STATE_HIDDEN:
return FALSE;
case META_WINDOW_SUSPEND_STATE_SUSPENDED:
return TRUE;
}
g_assert_not_reached ();
}
static void
meta_window_show (MetaWindow *window)
{
@ -2302,6 +2408,8 @@ meta_window_show (MetaWindow *window)
window);
}
update_suspend_state (window);
if (did_show)
g_signal_emit (window, window_signals[SHOWN], 0);
}
@ -2391,6 +2499,8 @@ meta_window_hide (MetaWindow *window)
if (did_hide)
meta_display_queue_check_fullscreen (window->display);
update_suspend_state (window);
}
static gboolean