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mutter/src/core/workspace.c
Jonas Ådahl 4b3cab2cca compositor: Don't make internal API public 
Things like meta_compositor_destroy() and meta_compositor_add_window()
isn't intended to be used externally, and if they was, things would
probably fall apart rather quickly.

MetaCompositor also isn't introspected, meaning things that technically
belong to the compositing parts isn't easily available via some object,
but much take detours via other objects like MetaDisplay.

So move the API intended for internal usage to compositor-private.h, and
leave API that is meant to be expose in the public compositor.h.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2718>
2022-12-17 15:13:48 +01:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2001 Havoc Pennington
* Copyright (C) 2003 Rob Adams
* Copyright (C) 2004, 2005 Elijah Newren
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:workspace
* @title:MetaWorkspace
* @short_description:Workspaces
*
* A workspace is a set of windows which all live on the same
* screen. (You may also see the name "desktop" around the place,
* which is the EWMH's name for the same thing.) Only one workspace
* of a screen may be active at once; all windows on all other workspaces
* are unmapped.
*/
#include "config.h"
#include "meta/workspace.h"
#include <X11/Xatom.h>
#include <string.h>
#include "backends/meta-backend-private.h"
#include "backends/meta-cursor-tracker-private.h"
#include "backends/meta-logical-monitor.h"
#include "cogl/cogl.h"
#include "compositor/compositor-private.h"
#include "core/boxes-private.h"
#include "core/meta-workspace-manager-private.h"
#include "core/workspace-private.h"
#include "meta/meta-x11-errors.h"
#include "meta/prefs.h"
#include "x11/meta-x11-display-private.h"
void meta_workspace_queue_calc_showing (MetaWorkspace *workspace);
static void focus_ancestor_or_mru_window (MetaWorkspace *workspace,
MetaWindow *not_this_one,
guint32 timestamp);
static MetaWindow * get_pointer_window (MetaWorkspace *workspace,
MetaWindow *not_this_one);
G_DEFINE_TYPE (MetaWorkspace, meta_workspace, G_TYPE_OBJECT);
enum
{
PROP_0,
PROP_N_WINDOWS,
PROP_WORKSPACE_INDEX,
PROP_ACTIVE,
PROP_LAST,
};
static GParamSpec *obj_props[PROP_LAST];
enum
{
WINDOW_ADDED,
WINDOW_REMOVED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
typedef struct _MetaWorkspaceLogicalMonitorData
{
GList *logical_monitor_region;
MetaRectangle logical_monitor_work_area;
} MetaWorkspaceLogicalMonitorData;
typedef struct _MetaWorkspaceFocusableAncestorData
{
MetaWorkspace *workspace;
MetaWindow *out_window;
} MetaWorkspaceFocusableAncestorData;
static MetaWorkspaceLogicalMonitorData *
meta_workspace_get_logical_monitor_data (MetaWorkspace *workspace,
MetaLogicalMonitor *logical_monitor)
{
if (!workspace->logical_monitor_data)
return NULL;
return g_hash_table_lookup (workspace->logical_monitor_data, logical_monitor);
}
static void
workspace_logical_monitor_data_free (MetaWorkspaceLogicalMonitorData *data)
{
g_clear_pointer (&data->logical_monitor_region,
meta_rectangle_free_list_and_elements);
g_free (data);
}
static MetaWorkspaceLogicalMonitorData *
meta_workspace_ensure_logical_monitor_data (MetaWorkspace *workspace,
MetaLogicalMonitor *logical_monitor)
{
MetaWorkspaceLogicalMonitorData *data;
data = meta_workspace_get_logical_monitor_data (workspace, logical_monitor);
if (data)
return data;
if (!workspace->logical_monitor_data)
{
workspace->logical_monitor_data =
g_hash_table_new_full (g_direct_hash,
g_direct_equal,
NULL,
(GDestroyNotify) workspace_logical_monitor_data_free);
}
data = g_new0 (MetaWorkspaceLogicalMonitorData, 1);
g_hash_table_insert (workspace->logical_monitor_data, logical_monitor, data);
return data;
}
static void
meta_workspace_clear_logical_monitor_data (MetaWorkspace *workspace)
{
g_clear_pointer (&workspace->logical_monitor_data, g_hash_table_destroy);
}
static void
meta_workspace_finalize (GObject *object)
{
/* Actual freeing done in meta_workspace_remove() for now */
G_OBJECT_CLASS (meta_workspace_parent_class)->finalize (object);
}
static void
meta_workspace_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
switch (prop_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_workspace_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaWorkspace *ws = META_WORKSPACE (object);
switch (prop_id)
{
case PROP_N_WINDOWS:
/*
* This is reliable, but not very efficient; should we store
* the list length ?
*/
g_value_set_uint (value, g_list_length (ws->windows));
break;
case PROP_WORKSPACE_INDEX:
g_value_set_uint (value, meta_workspace_index (ws));
break;
case PROP_ACTIVE:
g_value_set_boolean (value, ws->manager->active_workspace == ws);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_workspace_class_init (MetaWorkspaceClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_workspace_finalize;
object_class->get_property = meta_workspace_get_property;
object_class->set_property = meta_workspace_set_property;
signals[WINDOW_ADDED] = g_signal_new ("window-added",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1,
META_TYPE_WINDOW);
signals[WINDOW_REMOVED] = g_signal_new ("window-removed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1,
META_TYPE_WINDOW);
obj_props[PROP_N_WINDOWS] = g_param_spec_uint ("n-windows",
"N Windows",
"Number of windows",
0, G_MAXUINT, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
obj_props[PROP_WORKSPACE_INDEX] = g_param_spec_uint ("workspace-index",
"Workspace index",
"The workspace's index",
0, G_MAXUINT, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
obj_props[PROP_ACTIVE] = g_param_spec_boolean ("active",
"Active",
"Whether the workspace is currently active",
FALSE,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, PROP_LAST, obj_props);
}
static void
meta_workspace_init (MetaWorkspace *workspace)
{
}
MetaWorkspace *
meta_workspace_new (MetaWorkspaceManager *workspace_manager)
{
MetaDisplay *display = workspace_manager->display;
MetaWorkspace *workspace;
GSList *windows, *l;
workspace = g_object_new (META_TYPE_WORKSPACE, NULL);
workspace->display = display;
workspace->manager = workspace_manager;
workspace_manager->workspaces =
g_list_append (workspace_manager->workspaces, workspace);
workspace->windows = NULL;
workspace->mru_list = NULL;
workspace->work_areas_invalid = TRUE;
workspace->work_area_screen.x = 0;
workspace->work_area_screen.y = 0;
workspace->work_area_screen.width = 0;
workspace->work_area_screen.height = 0;
workspace->screen_region = NULL;
workspace->screen_edges = NULL;
workspace->monitor_edges = NULL;
workspace->list_containing_self = g_list_prepend (NULL, workspace);
workspace->builtin_struts = NULL;
workspace->all_struts = NULL;
workspace->showing_desktop = FALSE;
/* make sure sticky windows are in our mru_list */
windows = meta_display_list_windows (display, META_LIST_SORTED);
for (l = windows; l; l = l->next)
if (meta_window_located_on_workspace (l->data, workspace))
meta_workspace_add_window (workspace, l->data);
g_slist_free (windows);
return workspace;
}
/**
* workspace_free_all_struts:
* @workspace: The workspace.
*
* Frees the combined struts list of a workspace.
*/
static void
workspace_free_all_struts (MetaWorkspace *workspace)
{
if (workspace->all_struts == NULL)
return;
g_slist_free_full (workspace->all_struts, g_free);
workspace->all_struts = NULL;
}
/**
* workspace_free_builtin_struts:
* @workspace: The workspace.
*
* Frees the struts list set with meta_workspace_set_builtin_struts
*/
static void
workspace_free_builtin_struts (MetaWorkspace *workspace)
{
if (workspace->builtin_struts == NULL)
return;
g_slist_free_full (workspace->builtin_struts, g_free);
workspace->builtin_struts = NULL;
}
/* Ensure that the workspace is empty by making sure that
* all of our windows are on-all-workspaces. */
static void
assert_workspace_empty (MetaWorkspace *workspace)
{
GList *l;
for (l = workspace->windows; l != NULL; l = l->next)
{
MetaWindow *window = l->data;
g_assert (window->on_all_workspaces);
}
}
void
meta_workspace_remove (MetaWorkspace *workspace)
{
MetaWorkspaceManager *manager = workspace->display->workspace_manager;
g_return_if_fail (workspace != manager->active_workspace);
assert_workspace_empty (workspace);
manager->workspaces =
g_list_remove (manager->workspaces, workspace);
meta_workspace_clear_logical_monitor_data (workspace);
g_list_free (workspace->mru_list);
g_list_free (workspace->list_containing_self);
workspace_free_builtin_struts (workspace);
/* screen.c:update_num_workspaces(), which calls us, removes windows from
* workspaces first, which can cause the workareas on the workspace to be
* invalidated (and hence for struts/regions/edges to be freed).
* So, no point trying to double free it; that causes a crash
* anyway. #361804.
*/
if (!workspace->work_areas_invalid)
{
workspace_free_all_struts (workspace);
meta_rectangle_free_list_and_elements (workspace->screen_region);
meta_rectangle_free_list_and_elements (workspace->screen_edges);
meta_rectangle_free_list_and_elements (workspace->monitor_edges);
}
g_object_unref (workspace);
/* don't bother to reset names, pagers can just ignore
* extra ones
*/
}
static void
update_workspace_default_focus (MetaWorkspace *workspace,
MetaWindow *not_this_one)
{
g_autoptr (GSList) windows = NULL;
GSList *l;
windows = meta_display_list_windows (workspace->display, META_LIST_DEFAULT);
for (l = windows; l; l = l->next)
{
MetaWindow *window = META_WINDOW (l->data);
if (meta_window_located_on_workspace (window, workspace) &&
window != not_this_one)
meta_window_update_appears_focused (window);
}
}
void
meta_workspace_add_window (MetaWorkspace *workspace,
MetaWindow *window)
{
MetaWorkspaceManager *workspace_manager;
g_return_if_fail (g_list_find (workspace->mru_list, window) == NULL);
COGL_TRACE_BEGIN_SCOPED (MetaWorkspaceAddWindow,
"Workspace (add window)");
workspace_manager = workspace->display->workspace_manager;
workspace->mru_list = g_list_prepend (workspace->mru_list, window);
workspace->windows = g_list_prepend (workspace->windows, window);
if (window->struts)
{
meta_topic (META_DEBUG_WORKAREA,
"Invalidating work area of workspace %d since we're adding window %s to it",
meta_workspace_index (workspace), window->desc);
meta_workspace_invalidate_work_area (workspace);
}
if (workspace != workspace_manager->active_workspace)
update_workspace_default_focus (workspace, window);
g_signal_emit (workspace, signals[WINDOW_ADDED], 0, window);
g_object_notify_by_pspec (G_OBJECT (workspace), obj_props[PROP_N_WINDOWS]);
}
void
meta_workspace_remove_window (MetaWorkspace *workspace,
MetaWindow *window)
{
MetaWorkspaceManager *workspace_manager = workspace->display->workspace_manager;
COGL_TRACE_BEGIN_SCOPED (MetaWorkspaceRemoveWindow,
"Workspace (remove window)");
workspace->windows = g_list_remove (workspace->windows, window);
workspace->mru_list = g_list_remove (workspace->mru_list, window);
g_assert (g_list_find (workspace->mru_list, window) == NULL);
if (window->struts)
{
meta_topic (META_DEBUG_WORKAREA,
"Invalidating work area of workspace %d since we're removing window %s from it",
meta_workspace_index (workspace), window->desc);
meta_workspace_invalidate_work_area (workspace);
}
if (workspace != workspace_manager->active_workspace)
update_workspace_default_focus (workspace, window);
g_signal_emit (workspace, signals[WINDOW_REMOVED], 0, window);
g_object_notify (G_OBJECT (workspace), "n-windows");
}
void
meta_workspace_relocate_windows (MetaWorkspace *workspace,
MetaWorkspace *new_home)
{
GList *copy, *l;
g_return_if_fail (workspace != new_home);
/* can't modify list we're iterating over */
copy = g_list_copy (workspace->windows);
for (l = copy; l != NULL; l = l->next)
{
MetaWindow *window = l->data;
if (!window->on_all_workspaces)
meta_window_change_workspace (window, new_home);
}
g_list_free (copy);
assert_workspace_empty (workspace);
}
void
meta_workspace_queue_calc_showing (MetaWorkspace *workspace)
{
GList *l;
for (l = workspace->windows; l != NULL; l = l->next)
meta_window_queue (l->data, META_QUEUE_CALC_SHOWING);
}
static void
workspace_switch_sound (MetaWorkspace *from,
MetaWorkspace *to)
{
MetaSoundPlayer *player;
MetaWorkspaceLayout layout;
int n_workspaces;
int from_idx, to_idx;
int i;
int x, y;
const char *sound_name;
n_workspaces = meta_workspace_manager_get_n_workspaces (from->manager);
from_idx = meta_workspace_index(from);
to_idx = meta_workspace_index(to);
meta_workspace_manager_calc_workspace_layout (from->manager,
n_workspaces,
from_idx,
&layout);
for (i = 0; i < n_workspaces; i++)
{
if (layout.grid[i] == to_idx)
break;
}
if (i >= n_workspaces)
{
g_warning ("Failed to find destination workspace in layout");
goto finish;
}
y = i / layout.cols;
x = i % layout.cols;
/* We priorize horizontal over vertical movements here. The
rationale for this is that horizontal movements are probably more
interesting for sound effects because speakers are usually
positioned on a horizontal and not a vertical axis. i.e. your
spatial "Woosh!" effects will easily be able to encode horizontal
movement but not such much vertical movement. */
if (x < layout.current_col)
sound_name = "desktop-switch-left";
else if (x > layout.current_col)
sound_name = "desktop-switch-right";
else if (y < layout.current_row)
sound_name = "desktop-switch-up";
else if (y > layout.current_row)
sound_name = "desktop-switch-down";
else
{
g_warn_if_reached ();
goto finish;
}
player = meta_display_get_sound_player (from->display);
meta_sound_player_play_from_theme (player,
sound_name, _("Workspace switched"),
NULL);
finish:
meta_workspace_manager_free_workspace_layout (&layout);
}
/**
* meta_workspace_activate_with_focus:
* @workspace: a #MetaWorkspace
* @focus_this: the #MetaWindow to be focused, or %NULL
* @timestamp: timestamp for @focus_this
*
* Switches to @workspace and possibly activates the window @focus_this.
*
* The window @focus_this is activated by calling meta_window_activate()
* which will unminimize it and transient parents, raise it and give it
* the focus.
*
* If a window is currently being moved by the user, it will be
* moved to @workspace.
*
* The advantage of calling this function instead of meta_workspace_activate()
* followed by meta_window_activate() is that it happens as a unit, so
* no other window gets focused first before @focus_this.
*/
void
meta_workspace_activate_with_focus (MetaWorkspace *workspace,
MetaWindow *focus_this,
guint32 timestamp)
{
MetaWorkspace *old;
MetaWindow *move_window;
MetaCompositor *comp;
MetaWorkspaceLayout layout1, layout2;
gint num_workspaces, current_space, new_space;
MetaMotionDirection direction;
g_return_if_fail (META_IS_WORKSPACE (workspace));
g_return_if_fail (meta_workspace_index (workspace) != -1);
meta_verbose ("Activating workspace %d",
meta_workspace_index (workspace));
if (workspace->manager->active_workspace == workspace)
{
if (focus_this)
meta_window_activate (focus_this, timestamp);
return;
}
/* Free any cached pointers to the workspaces's edges from
* a current resize or move operation */
meta_display_cleanup_edges (workspace->display);
if (workspace->manager->active_workspace)
workspace_switch_sound (workspace->manager->active_workspace, workspace);
/* Note that old can be NULL; e.g. when starting up */
old = workspace->manager->active_workspace;
workspace->manager->active_workspace = workspace;
g_signal_emit_by_name (workspace->manager, "active-workspace-changed");
g_object_notify_by_pspec (G_OBJECT (workspace), obj_props[PROP_ACTIVE]);
if (old == NULL)
return;
g_object_notify_by_pspec (G_OBJECT (old), obj_props[PROP_ACTIVE]);
/* If the "show desktop" mode is active for either the old workspace
* or the new one *but not both*, then update the
* _net_showing_desktop hint
*/
if (old->showing_desktop != workspace->showing_desktop)
g_signal_emit_by_name (workspace->manager, "showing-desktop-changed");
move_window = NULL;
if (meta_grab_op_is_moving (workspace->display->grab_op))
move_window = workspace->display->grab_window;
if (move_window != NULL)
{
/* We put the window on the new workspace, flip spaces,
* then remove from old workspace, so the window
* never gets unmapped and we maintain the button grab
* on it.
*
* \bug This comment appears to be the reverse of what happens
*/
if (!meta_window_located_on_workspace (move_window, workspace))
meta_window_change_workspace (move_window, workspace);
}
meta_workspace_queue_calc_showing (old);
meta_workspace_queue_calc_showing (workspace);
/*
* Notify the compositor that the active workspace is changing.
*/
comp = meta_display_get_compositor (workspace->display);
direction = 0;
current_space = meta_workspace_index (old);
new_space = meta_workspace_index (workspace);
num_workspaces = meta_workspace_manager_get_n_workspaces (workspace->manager);
meta_workspace_manager_calc_workspace_layout (workspace->manager, num_workspaces,
current_space, &layout1);
meta_workspace_manager_calc_workspace_layout (workspace->manager, num_workspaces,
new_space, &layout2);
if (meta_get_locale_direction () == META_LOCALE_DIRECTION_RTL)
{
if (layout1.current_col > layout2.current_col)
direction = META_MOTION_RIGHT;
else if (layout1.current_col < layout2.current_col)
direction = META_MOTION_LEFT;
}
else
{
if (layout1.current_col < layout2.current_col)
direction = META_MOTION_RIGHT;
else if (layout1.current_col > layout2.current_col)
direction = META_MOTION_LEFT;
}
if (layout1.current_row < layout2.current_row)
{
if (!direction)
direction = META_MOTION_DOWN;
else if (direction == META_MOTION_RIGHT)
direction = META_MOTION_DOWN_RIGHT;
else
direction = META_MOTION_DOWN_LEFT;
}
if (layout1.current_row > layout2.current_row)
{
if (!direction)
direction = META_MOTION_UP;
else if (direction == META_MOTION_RIGHT)
direction = META_MOTION_UP_RIGHT;
else
direction = META_MOTION_UP_LEFT;
}
meta_workspace_manager_free_workspace_layout (&layout1);
meta_workspace_manager_free_workspace_layout (&layout2);
meta_compositor_switch_workspace (comp, old, workspace, direction);
/* This needs to be done after telling the compositor we are switching
* workspaces since focusing a window will cause it to be immediately
* shown and that would confuse the compositor if it didn't know we
* were in a workspace switch.
*/
if (focus_this)
{
meta_window_activate (focus_this, timestamp);
update_workspace_default_focus (workspace, focus_this);
}
else if (move_window)
{
meta_window_raise (move_window);
}
else
{
meta_topic (META_DEBUG_FOCUS, "Focusing default window on new workspace");
meta_workspace_focus_default_window (workspace, NULL, timestamp);
}
meta_workspace_manager_workspace_switched (workspace->manager, current_space,
new_space, direction);
}
void
meta_workspace_activate (MetaWorkspace *workspace,
guint32 timestamp)
{
meta_workspace_activate_with_focus (workspace, NULL, timestamp);
}
int
meta_workspace_index (MetaWorkspace *workspace)
{
int ret;
ret = g_list_index (workspace->manager->workspaces, workspace);
g_return_val_if_fail (ret >= 0, -1);
return ret;
}
void
meta_workspace_index_changed (MetaWorkspace *workspace)
{
GList *l;
for (l = workspace->windows; l != NULL; l = l->next)
{
MetaWindow *win = l->data;
meta_window_current_workspace_changed (win);
}
g_object_notify_by_pspec (G_OBJECT (workspace), obj_props[PROP_WORKSPACE_INDEX]);
}
/**
* meta_workspace_list_windows:
* @workspace: a #MetaWorkspace
*
* Gets windows contained on the workspace, including workspace->windows
* and also sticky windows. Override-redirect windows are not included.
*
* Return value: (transfer container) (element-type MetaWindow): the list of windows.
*/
GList*
meta_workspace_list_windows (MetaWorkspace *workspace)
{
GSList *display_windows, *l;
GList *workspace_windows;
display_windows = meta_display_list_windows (workspace->display,
META_LIST_DEFAULT);
workspace_windows = NULL;
for (l = display_windows; l != NULL; l = l->next)
{
MetaWindow *window = l->data;
if (meta_window_located_on_workspace (window, workspace))
workspace_windows = g_list_prepend (workspace_windows,
window);
}
g_slist_free (display_windows);
return workspace_windows;
}
void
meta_workspace_invalidate_work_area (MetaWorkspace *workspace)
{
GList *windows, *l;
if (workspace->work_areas_invalid)
{
meta_topic (META_DEBUG_WORKAREA,
"Work area for workspace %d is already invalid",
meta_workspace_index (workspace));
return;
}
meta_topic (META_DEBUG_WORKAREA,
"Invalidating work area for workspace %d",
meta_workspace_index (workspace));
/* If we are in the middle of a resize or move operation, we
* might have cached pointers to the workspace's edges */
if (workspace == workspace->manager->active_workspace)
meta_display_cleanup_edges (workspace->display);
meta_workspace_clear_logical_monitor_data (workspace);
workspace_free_all_struts (workspace);
meta_rectangle_free_list_and_elements (workspace->screen_region);
meta_rectangle_free_list_and_elements (workspace->screen_edges);
meta_rectangle_free_list_and_elements (workspace->monitor_edges);
workspace->screen_region = NULL;
workspace->screen_edges = NULL;
workspace->monitor_edges = NULL;
workspace->work_areas_invalid = TRUE;
/* redo the size/position constraints on all windows */
windows = meta_workspace_list_windows (workspace);
for (l = windows; l != NULL; l = l->next)
{
MetaWindow *w = l->data;
meta_window_queue (w, META_QUEUE_MOVE_RESIZE);
}
g_list_free (windows);
meta_display_queue_workarea_recalc (workspace->display);
}
static MetaStrut *
copy_strut(MetaStrut *original)
{
return g_memdup2 (original, sizeof (MetaStrut));
}
static GSList *
copy_strut_list(GSList *original)
{
GSList *result = NULL;
for (; original != NULL; original = original->next)
result = g_slist_prepend (result, copy_strut (original->data));
return g_slist_reverse (result);
}
static void
ensure_work_areas_validated (MetaWorkspace *workspace)
{
MetaContext *context = meta_display_get_context (workspace->display);
MetaBackend *backend = meta_context_get_backend (context);
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
GList *windows;
GList *tmp;
GList *logical_monitors, *l;
MetaRectangle display_rect = { 0 };
MetaRectangle work_area;
if (!workspace->work_areas_invalid)
return;
g_assert (workspace->all_struts == NULL);
g_assert (workspace->screen_region == NULL);
g_assert (workspace->screen_edges == NULL);
g_assert (workspace->monitor_edges == NULL);
meta_display_get_size (workspace->display,
&display_rect.width,
&display_rect.height);
/* STEP 1: Get the list of struts */
workspace->all_struts = copy_strut_list (workspace->builtin_struts);
windows = meta_workspace_list_windows (workspace);
for (tmp = windows; tmp != NULL; tmp = tmp->next)
{
MetaWindow *win = tmp->data;
GSList *s_iter;
for (s_iter = win->struts; s_iter != NULL; s_iter = s_iter->next) {
workspace->all_struts = g_slist_prepend (workspace->all_struts,
copy_strut(s_iter->data));
}
}
g_list_free (windows);
/* STEP 2: Get the maximal/spanning rects for the onscreen and
* on-single-monitor regions
*/
g_assert (workspace->screen_region == NULL);
logical_monitors =
meta_monitor_manager_get_logical_monitors (monitor_manager);
for (l = logical_monitors; l; l = l->next)
{
MetaLogicalMonitor *logical_monitor = l->data;
MetaWorkspaceLogicalMonitorData *data;
g_assert (!meta_workspace_get_logical_monitor_data (workspace,
logical_monitor));
data = meta_workspace_ensure_logical_monitor_data (workspace,
logical_monitor);
data->logical_monitor_region =
meta_rectangle_get_minimal_spanning_set_for_region (
&logical_monitor->rect,
workspace->all_struts);
}
workspace->screen_region =
meta_rectangle_get_minimal_spanning_set_for_region (
&display_rect,
workspace->all_struts);
/* STEP 3: Get the work areas (region-to-maximize-to) for the screen and
* monitors.
*/
work_area = display_rect; /* start with the screen */
if (workspace->screen_region == NULL)
work_area = meta_rect (0, 0, -1, -1);
else
meta_rectangle_clip_to_region (workspace->screen_region,
FIXED_DIRECTION_NONE,
&work_area);
/* Lots of paranoia checks, forcing work_area_screen to be sane */
#define MIN_SANE_AREA 100
if (work_area.width < MIN_SANE_AREA &&
work_area.width != display_rect.width)
{
meta_warning ("struts occupy an unusually large percentage of the screen; "
"available remaining width = %d < %d",
work_area.width, MIN_SANE_AREA);
if (work_area.width < 1)
{
work_area.x = (display_rect.width - MIN_SANE_AREA)/2;
work_area.width = MIN_SANE_AREA;
}
else
{
int amount = (MIN_SANE_AREA - work_area.width)/2;
work_area.x -= amount;
work_area.width += 2*amount;
}
}
if (work_area.height < MIN_SANE_AREA &&
work_area.height != display_rect.height)
{
meta_warning ("struts occupy an unusually large percentage of the screen; "
"available remaining height = %d < %d",
work_area.height, MIN_SANE_AREA);
if (work_area.height < 1)
{
work_area.y = (display_rect.height - MIN_SANE_AREA)/2;
work_area.height = MIN_SANE_AREA;
}
else
{
int amount = (MIN_SANE_AREA - work_area.height)/2;
work_area.y -= amount;
work_area.height += 2*amount;
}
}
workspace->work_area_screen = work_area;
meta_topic (META_DEBUG_WORKAREA,
"Computed work area for workspace %d: %d,%d %d x %d",
meta_workspace_index (workspace),
workspace->work_area_screen.x,
workspace->work_area_screen.y,
workspace->work_area_screen.width,
workspace->work_area_screen.height);
/* Now find the work areas for each monitor */
for (l = logical_monitors; l; l = l->next)
{
MetaLogicalMonitor *logical_monitor = l->data;
MetaWorkspaceLogicalMonitorData *data;
data = meta_workspace_get_logical_monitor_data (workspace,
logical_monitor);
work_area = logical_monitor->rect;
if (!data->logical_monitor_region)
/* FIXME: constraints.c untested with this, but it might be nice for
* a screen reader or magnifier.
*/
work_area = meta_rect (work_area.x, work_area.y, -1, -1);
else
meta_rectangle_clip_to_region (data->logical_monitor_region,
FIXED_DIRECTION_NONE,
&work_area);
data->logical_monitor_work_area = work_area;
meta_topic (META_DEBUG_WORKAREA,
"Computed work area for workspace %d "
"monitor %d: %d,%d %d x %d",
meta_workspace_index (workspace),
logical_monitor->number,
data->logical_monitor_work_area.x,
data->logical_monitor_work_area.y,
data->logical_monitor_work_area.width,
data->logical_monitor_work_area.height);
}
/* STEP 4: Make sure the screen_region is nonempty (separate from step 2
* since it relies on step 3).
*/
if (workspace->screen_region == NULL)
{
MetaRectangle *nonempty_region;
nonempty_region = g_new (MetaRectangle, 1);
*nonempty_region = workspace->work_area_screen;
workspace->screen_region = g_list_prepend (NULL, nonempty_region);
}
/* STEP 5: Cache screen and monitor edges for edge resistance and snapping */
g_assert (workspace->screen_edges == NULL);
g_assert (workspace->monitor_edges == NULL);
workspace->screen_edges =
meta_rectangle_find_onscreen_edges (&display_rect,
workspace->all_struts);
tmp = NULL;
for (l = logical_monitors; l; l = l->next)
{
MetaLogicalMonitor *logical_monitor = l->data;
tmp = g_list_prepend (tmp, &logical_monitor->rect);
}
workspace->monitor_edges =
meta_rectangle_find_nonintersected_monitor_edges (tmp,
workspace->all_struts);
g_list_free (tmp);
/* We're all done, YAAY! Record that everything has been validated. */
workspace->work_areas_invalid = FALSE;
}
static gboolean
strut_lists_equal (GSList *l,
GSList *m)
{
for (; l && m; l = l->next, m = m->next)
{
MetaStrut *a = l->data;
MetaStrut *b = m->data;
if (a->side != b->side ||
!meta_rectangle_equal (&a->rect, &b->rect))
return FALSE;
}
return l == NULL && m == NULL;
}
/**
* meta_workspace_set_builtin_struts:
* @workspace: a #MetaWorkspace
* @struts: (element-type Meta.Strut) (transfer none): list of #MetaStrut
*
* Sets a list of struts that will be used in addition to the struts
* of the windows in the workspace when computing the work area of
* the workspace.
*/
void
meta_workspace_set_builtin_struts (MetaWorkspace *workspace,
GSList *struts)
{
MetaContext *context = meta_display_get_context (workspace->display);
MetaBackend *backend = meta_context_get_backend (context);
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
MetaDisplay *display = workspace->display;
MetaRectangle display_rect = { 0 };
GSList *l;
meta_display_get_size (display, &display_rect.width, &display_rect.height);
for (l = struts; l; l = l->next)
{
MetaStrut *strut = l->data;
MetaLogicalMonitor *logical_monitor;
logical_monitor =
meta_monitor_manager_get_logical_monitor_from_rect (monitor_manager,
&strut->rect);
switch (strut->side)
{
case META_SIDE_TOP:
if (meta_monitor_manager_get_logical_monitor_neighbor (monitor_manager,
logical_monitor,
META_DISPLAY_UP))
continue;
strut->rect.height += strut->rect.y;
strut->rect.y = 0;
break;
case META_SIDE_BOTTOM:
if (meta_monitor_manager_get_logical_monitor_neighbor (monitor_manager,
logical_monitor,
META_DISPLAY_DOWN))
continue;
strut->rect.height = display_rect.height - strut->rect.y;
break;
case META_SIDE_LEFT:
if (meta_monitor_manager_get_logical_monitor_neighbor (monitor_manager,
logical_monitor,
META_DISPLAY_LEFT))
continue;
strut->rect.width += strut->rect.x;
strut->rect.x = 0;
break;
case META_SIDE_RIGHT:
if (meta_monitor_manager_get_logical_monitor_neighbor (monitor_manager,
logical_monitor,
META_DISPLAY_RIGHT))
continue;
strut->rect.width = display_rect.width - strut->rect.x;
break;
}
}
/* Reordering doesn't actually matter, so we don't catch all
* no-impact changes, but this is just a (possibly unnecessary
* anyways) optimization */
if (strut_lists_equal (struts, workspace->builtin_struts))
return;
workspace_free_builtin_struts (workspace);
workspace->builtin_struts = copy_strut_list (struts);
meta_workspace_invalidate_work_area (workspace);
}
void
meta_workspace_get_work_area_for_logical_monitor (MetaWorkspace *workspace,
MetaLogicalMonitor *logical_monitor,
MetaRectangle *area)
{
meta_workspace_get_work_area_for_monitor (workspace,
logical_monitor->number,
area);
}
/**
* meta_workspace_get_work_area_for_monitor:
* @workspace: a #MetaWorkspace
* @which_monitor: a monitor index
* @area: (out): location to store the work area
*
* Stores the work area for @which_monitor on @workspace
* in @area.
*/
void
meta_workspace_get_work_area_for_monitor (MetaWorkspace *workspace,
int which_monitor,
MetaRectangle *area)
{
MetaContext *context = meta_display_get_context (workspace->display);
MetaBackend *backend = meta_context_get_backend (context);
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
MetaLogicalMonitor *logical_monitor;
MetaWorkspaceLogicalMonitorData *data;
logical_monitor =
meta_monitor_manager_get_logical_monitor_from_number (monitor_manager,
which_monitor);
g_return_if_fail (logical_monitor != NULL);
ensure_work_areas_validated (workspace);
data = meta_workspace_get_logical_monitor_data (workspace, logical_monitor);
g_return_if_fail (data != NULL);
*area = data->logical_monitor_work_area;
}
/**
* meta_workspace_get_work_area_all_monitors:
* @workspace: a #MetaWorkspace
* @area: (out): location to store the work area
*
* Stores the work area in @area.
*/
void
meta_workspace_get_work_area_all_monitors (MetaWorkspace *workspace,
MetaRectangle *area)
{
ensure_work_areas_validated (workspace);
*area = workspace->work_area_screen;
}
GList*
meta_workspace_get_onscreen_region (MetaWorkspace *workspace)
{
ensure_work_areas_validated (workspace);
return workspace->screen_region;
}
GList *
meta_workspace_get_onmonitor_region (MetaWorkspace *workspace,
MetaLogicalMonitor *logical_monitor)
{
MetaWorkspaceLogicalMonitorData *data;
ensure_work_areas_validated (workspace);
data = meta_workspace_get_logical_monitor_data (workspace, logical_monitor);
return data->logical_monitor_region;
}
#ifdef WITH_VERBOSE_MODE
static const char *
meta_motion_direction_to_string (MetaMotionDirection direction)
{
switch (direction)
{
case META_MOTION_UP:
return "Up";
case META_MOTION_DOWN:
return "Down";
case META_MOTION_LEFT:
return "Left";
case META_MOTION_RIGHT:
return "Right";
case META_MOTION_UP_RIGHT:
return "Up-Right";
case META_MOTION_DOWN_RIGHT:
return "Down-Right";
case META_MOTION_UP_LEFT:
return "Up-Left";
case META_MOTION_DOWN_LEFT:
return "Down-Left";
}
return "Unknown";
}
#endif /* WITH_VERBOSE_MODE */
/**
* meta_workspace_get_neighbor:
* @workspace: a #MetaWorkspace
* @direction: a #MetaMotionDirection, relative to @workspace
*
* Calculate and retrieve the workspace that is next to @workspace,
* according to @direction and the current workspace layout, as set
* by meta_screen_override_workspace_layout().
*
* Returns: (transfer none): the workspace next to @workspace, or
* @workspace itself if the neighbor would be outside the layout
*/
MetaWorkspace*
meta_workspace_get_neighbor (MetaWorkspace *workspace,
MetaMotionDirection direction)
{
MetaWorkspaceLayout layout;
int i, current_space, num_workspaces;
gboolean ltr;
current_space = meta_workspace_index (workspace);
num_workspaces = meta_workspace_manager_get_n_workspaces (workspace->manager);
meta_workspace_manager_calc_workspace_layout (workspace->manager, num_workspaces,
current_space, &layout);
meta_verbose ("Getting neighbor of %d in direction %s",
current_space, meta_motion_direction_to_string (direction));
ltr = (meta_get_locale_direction () == META_LOCALE_DIRECTION_LTR);
switch (direction)
{
case META_MOTION_LEFT:
layout.current_col -= ltr ? 1 : -1;
break;
case META_MOTION_RIGHT:
layout.current_col += ltr ? 1 : -1;
break;
case META_MOTION_UP:
layout.current_row -= 1;
break;
case META_MOTION_DOWN:
layout.current_row += 1;
break;
default:;
}
if (layout.current_col < 0)
layout.current_col = 0;
if (layout.current_col >= layout.cols)
layout.current_col = layout.cols - 1;
if (layout.current_row < 0)
layout.current_row = 0;
if (layout.current_row >= layout.rows)
layout.current_row = layout.rows - 1;
i = layout.grid[layout.current_row * layout.cols + layout.current_col];
if (i < 0)
i = current_space;
if (i >= num_workspaces)
meta_bug ("calc_workspace_layout left an invalid (too-high) workspace number %d in the grid",
i);
meta_verbose ("Neighbor workspace is %d at row %d col %d",
i, layout.current_row, layout.current_col);
meta_workspace_manager_free_workspace_layout (&layout);
return meta_workspace_manager_get_workspace_by_index (workspace->manager, i);
}
const char*
meta_workspace_get_name (MetaWorkspace *workspace)
{
return meta_prefs_get_workspace_name (meta_workspace_index (workspace));
}
static MetaWindow *
get_focused_workspace_window (MetaWorkspace *workspace)
{
g_autoptr (GList) windows = NULL;
GList *l;
windows = meta_workspace_list_windows (workspace);
for (l = windows; l != NULL; l = l->next)
{
MetaWindow *window = l->data;
if (meta_window_has_focus (window))
return window;
}
return NULL;
}
void
meta_workspace_focus_default_window (MetaWorkspace *workspace,
MetaWindow *not_this_one,
guint32 timestamp)
{
MetaWindow *focus;
if (timestamp == META_CURRENT_TIME)
meta_warning ("META_CURRENT_TIME used to choose focus window; "
"focus window may not be correct.");
focus = get_focused_workspace_window (workspace);
if (focus != NULL && focus != not_this_one)
return;
if (meta_prefs_get_focus_mode () == G_DESKTOP_FOCUS_MODE_CLICK ||
!workspace->display->mouse_mode)
{
focus_ancestor_or_mru_window (workspace, not_this_one, timestamp);
}
else
{
MetaWindow * window;
window = get_pointer_window (workspace, not_this_one);
if (window &&
window->type != META_WINDOW_DOCK &&
window->type != META_WINDOW_DESKTOP)
{
if (timestamp == META_CURRENT_TIME)
{
/* We would like for this to never happen. However, if
* it does happen then we kludge since using META_CURRENT_TIME
* can mean ugly race conditions--and we can avoid these
* by allowing EnterNotify events (which come with
* timestamps) to handle focus.
*/
meta_topic (META_DEBUG_FOCUS,
"Not focusing mouse window %s because EnterNotify events should handle that",
window->desc);
}
else
{
meta_topic (META_DEBUG_FOCUS,
"Focusing mouse window %s", window->desc);
meta_window_focus (window, timestamp);
}
if (workspace->display->autoraise_window != window &&
meta_prefs_get_auto_raise ())
{
meta_display_queue_autoraise_callback (workspace->display, window);
}
}
else if (meta_prefs_get_focus_mode () == G_DESKTOP_FOCUS_MODE_SLOPPY)
{
focus_ancestor_or_mru_window (workspace, not_this_one, timestamp);
}
else if (meta_prefs_get_focus_mode () == G_DESKTOP_FOCUS_MODE_MOUSE)
{
meta_topic (META_DEBUG_FOCUS,
"Setting focus to no_focus_window, since no valid "
"window to focus found.");
meta_display_unset_input_focus (workspace->display, timestamp);
}
}
}
static gboolean
is_focusable (MetaWindow *window,
MetaWorkspace *workspace)
{
return !window->unmanaging &&
window->unmaps_pending == 0 &&
window->type != META_WINDOW_DOCK &&
meta_window_is_focusable (window) &&
meta_window_located_on_workspace (window, workspace) &&
meta_window_showing_on_its_workspace (window);
}
static gboolean
find_focusable_ancestor (MetaWindow *window,
gpointer user_data)
{
MetaWorkspaceFocusableAncestorData *data = user_data;
if (is_focusable (window, data->workspace) && !window->hidden)
{
data->out_window = window;
return FALSE;
}
return TRUE;
}
GList *
meta_workspace_get_default_focus_candidates (MetaWorkspace *workspace)
{
GList *l;
GList *candidates = NULL;
for (l = workspace->mru_list; l; l = l->next)
{
MetaWindow *window = l->data;
g_assert (window);
if (!is_focusable (window, workspace))
continue;
candidates = g_list_prepend (candidates, window);
}
return candidates;
}
static gboolean
window_contains_point (MetaWindow *window,
int root_x,
int root_y)
{
MetaRectangle rect;
meta_window_get_frame_rect (window, &rect);
return META_POINT_IN_RECT (root_x, root_y, rect);
}
MetaWindow *
meta_workspace_get_default_focus_window_at_point (MetaWorkspace *workspace,
MetaWindow *not_this_one,
int root_x,
int root_y)
{
g_autoptr (GList) sorted = NULL;
GList *l;
MetaStack *stack;
g_return_val_if_fail (META_IS_WORKSPACE (workspace), NULL);
g_return_val_if_fail (!not_this_one || META_IS_WINDOW (not_this_one), NULL);
stack = workspace->display->stack;
g_return_val_if_fail (META_IS_STACK (stack), NULL);
/* Find the topmost, focusable, mapped, window.
* not_this_one is being unfocused or going away, so exclude it.
*/
sorted = g_list_reverse (meta_stack_list_windows (stack, workspace));
/* top of this layer is at the front of the list */
for (l = sorted; l != NULL; l = l->next)
{
MetaWindow *window = l->data;
g_assert (window);
if (window == not_this_one)
continue;
if (!is_focusable (window, workspace))
continue;
if (!window_contains_point (window, root_x, root_y))
continue;
return window;
}
return NULL;
}
MetaWindow *
meta_workspace_get_default_focus_window (MetaWorkspace *workspace,
MetaWindow *not_this_one)
{
GList *l;
g_return_val_if_fail (META_IS_WORKSPACE (workspace), NULL);
g_return_val_if_fail (!not_this_one || META_IS_WINDOW (not_this_one), NULL);
for (l = workspace->mru_list; l; l = l->next)
{
MetaWindow *window = l->data;
g_assert (window);
if (window == not_this_one)
continue;
if (!is_focusable (window, workspace))
continue;
return window;
}
return NULL;
}
static MetaWindow *
get_pointer_window (MetaWorkspace *workspace,
MetaWindow *not_this_one)
{
MetaContext *context = meta_display_get_context (workspace->display);
MetaBackend *backend = meta_context_get_backend (context);
MetaCursorTracker *cursor_tracker = meta_backend_get_cursor_tracker (backend);
graphene_point_t point;
if (not_this_one)
meta_topic (META_DEBUG_FOCUS,
"Focusing mouse window excluding %s", not_this_one->desc);
meta_cursor_tracker_get_pointer (cursor_tracker, &point, NULL);
return meta_workspace_get_default_focus_window_at_point (workspace,
not_this_one,
point.x, point.y);
}
static gboolean
try_to_set_focus_and_check (MetaWindow *window,
MetaWindow *not_this_one,
uint32_t timestamp)
{
meta_window_focus (window, timestamp);
/* meta_focus_window() will not change focus for clients using the
* "globally active input" model of input handling, hence defeating
* the assumption that focus should be changed for such windows.
* See https://tronche.com/gui/x/icccm/sec-4.html#s-4.1.7
*/
if (meta_window_is_focus_async (window))
return TRUE;
/* meta_window_focus() does not guarantee that focus will end up
* where we expect, it can fail for various reasons, better check
* it did not actually changed or even left focus to the window we
* explicitly want to avoid.
*/
if (not_this_one &&
meta_display_get_focus_window (window->display) == not_this_one)
{
meta_warning ("Failed to focus window %s while avoiding %s",
window->desc, not_this_one->desc);
return FALSE;
}
return TRUE;
}
/* Focus ancestor of not_this_one if there is one */
static void
focus_ancestor_or_mru_window (MetaWorkspace *workspace,
MetaWindow *not_this_one,
guint32 timestamp)
{
MetaWindow *window = NULL;
if (not_this_one)
meta_topic (META_DEBUG_FOCUS,
"Focusing MRU window excluding %s", not_this_one->desc);
else
meta_topic (META_DEBUG_FOCUS,
"Focusing MRU window");
/* First, check to see if we need to focus an ancestor of a window */
if (not_this_one)
{
MetaWindow *ancestor;
MetaWorkspaceFocusableAncestorData data;
data = (MetaWorkspaceFocusableAncestorData) {
.workspace = workspace,
};
meta_window_foreach_ancestor (not_this_one, find_focusable_ancestor, &data);
ancestor = data.out_window;
if (ancestor)
{
meta_topic (META_DEBUG_FOCUS,
"Focusing %s, ancestor of %s",
ancestor->desc, not_this_one->desc);
if (try_to_set_focus_and_check (ancestor, not_this_one, timestamp))
{
/* Also raise the window if in click-to-focus */
if (meta_prefs_get_focus_mode () == G_DESKTOP_FOCUS_MODE_CLICK)
meta_window_raise (ancestor);
return;
}
}
}
window = meta_workspace_get_default_focus_window (workspace, not_this_one);
if (window)
{
meta_topic (META_DEBUG_FOCUS,
"Focusing workspace MRU window %s", window->desc);
if (try_to_set_focus_and_check (window, not_this_one, timestamp))
{
/* Also raise the window if in click-to-focus */
if (meta_prefs_get_focus_mode () == G_DESKTOP_FOCUS_MODE_CLICK)
meta_window_raise (window);
return;
}
}
meta_topic (META_DEBUG_FOCUS,
"No MRU window to focus found; focusing no_focus_window.");
meta_display_unset_input_focus (workspace->display, timestamp);
}
/**
* meta_workspace_get_display:
* @workspace: a #MetaWorkspace
*
* Gets the #MetaDisplay that the workspace is part of.
*
* Return value: (transfer none): the #MetaDisplay for the workspace
*/
MetaDisplay *
meta_workspace_get_display (MetaWorkspace *workspace)
{
return workspace->display;
}
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