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mutter-performance-source/src/core/meta-workspace-manager.c
Zander Brown b1dd6973df workspace-manager: Accessors for layout-{columns,rows} 
This will allow C code in shell to avoid going though `g_object_get`,
and in future GJS will also be able to take advantage giving a slender
yet not unwelcome boost to perf in some animations

(Semi relates to https://gitlab.gnome.org/GNOME/mutter/-/issues/3083)

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3351>
2024-01-09 16:38:25 +00:00

1065 lines
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2001 Havoc Pennington
* Copyright (C) 2002, 2003, 2004 Red Hat, Inc.
* Copyright (C) 2003, 2004 Rob Adams
* Copyright (C) 2004-2006 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/>.
*/
#include "config.h"
#include "core/meta-workspace-manager-private.h"
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "core/window-private.h"
#include "core/workspace-private.h"
#include "meta/meta-enum-types.h"
#include "meta/prefs.h"
#include "meta/util.h"
G_DEFINE_TYPE (MetaWorkspaceManager, meta_workspace_manager, G_TYPE_OBJECT)
enum
{
WORKSPACE_ADDED,
WORKSPACE_REMOVED,
WORKSPACE_SWITCHED,
WORKSPACES_REORDERED,
ACTIVE_WORKSPACE_CHANGED,
SHOWING_DESKTOP_CHANGED,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_LAYOUT_COLUMNS,
PROP_LAYOUT_ROWS,
PROP_N_WORKSPACES
};
static guint workspace_manager_signals [LAST_SIGNAL] = { 0 };
static void prefs_changed_callback (MetaPreference pref,
gpointer data);
static void meta_workspace_manager_init_workspaces (MetaWorkspaceManager *workspace_manager);
static void
meta_workspace_manager_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaWorkspaceManager *workspace_manager = META_WORKSPACE_MANAGER (object);
switch (prop_id)
{
case PROP_LAYOUT_COLUMNS:
g_value_set_int (value, meta_workspace_manager_get_layout_columns (workspace_manager));
break;
case PROP_LAYOUT_ROWS:
g_value_set_int (value, meta_workspace_manager_get_layout_rows (workspace_manager));
break;
case PROP_N_WORKSPACES:
g_value_set_int (value, meta_workspace_manager_get_n_workspaces (workspace_manager));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_workspace_manager_finalize (GObject *object)
{
MetaWorkspaceManager *workspace_manager = META_WORKSPACE_MANAGER (object);
meta_prefs_remove_listener (prefs_changed_callback, workspace_manager);
G_OBJECT_CLASS (meta_workspace_manager_parent_class)->finalize (object);
}
static void
meta_workspace_manager_class_init (MetaWorkspaceManagerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->get_property = meta_workspace_manager_get_property;
object_class->finalize = meta_workspace_manager_finalize;
workspace_manager_signals[WORKSPACE_ADDED] =
g_signal_new ("workspace-added",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE,
1,
G_TYPE_INT);
workspace_manager_signals[WORKSPACE_REMOVED] =
g_signal_new ("workspace-removed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE,
1,
G_TYPE_INT);
workspace_manager_signals[WORKSPACE_SWITCHED] =
g_signal_new ("workspace-switched",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE,
3,
G_TYPE_INT,
G_TYPE_INT,
META_TYPE_MOTION_DIRECTION);
/* Emitted when calling meta_workspace_manager_reorder_workspace.
*
* This signal is emitted when a workspace has been reordered to
* a different index. Note that other workspaces can change
* their index too when reordering happens.
*/
workspace_manager_signals[WORKSPACES_REORDERED] =
g_signal_new ("workspaces-reordered",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 0);
workspace_manager_signals[ACTIVE_WORKSPACE_CHANGED] =
g_signal_new ("active-workspace-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE, 0);
workspace_manager_signals[SHOWING_DESKTOP_CHANGED] =
g_signal_new ("showing-desktop-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0, NULL, NULL, NULL,
G_TYPE_NONE, 0);
g_object_class_install_property (object_class,
PROP_LAYOUT_COLUMNS,
g_param_spec_int ("layout-columns", NULL, NULL,
-1, G_MAXINT, 1,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_LAYOUT_ROWS,
g_param_spec_int ("layout-rows", NULL, NULL,
-1, G_MAXINT, -1,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_N_WORKSPACES,
g_param_spec_int ("n-workspaces", NULL, NULL,
1, G_MAXINT, 1,
G_PARAM_READABLE));
}
static void
meta_workspace_manager_init (MetaWorkspaceManager *workspace_manager)
{
}
void
meta_workspace_manager_reload_work_areas (MetaWorkspaceManager *workspace_manager)
{
GList *l;
for (l = workspace_manager->workspaces; l; l = l->next)
{
MetaWorkspace *workspace = l->data;
meta_workspace_invalidate_work_area (workspace);
}
}
MetaWorkspaceManager *
meta_workspace_manager_new (MetaDisplay *display)
{
MetaWorkspaceManager *workspace_manager;
workspace_manager = g_object_new (META_TYPE_WORKSPACE_MANAGER, NULL);
workspace_manager->display = display;
workspace_manager->active_workspace = NULL;
workspace_manager->workspaces = NULL;
workspace_manager->rows_of_workspaces = 1;
workspace_manager->columns_of_workspaces = -1;
workspace_manager->vertical_workspaces = FALSE;
workspace_manager->starting_corner = META_DISPLAY_TOPLEFT;
/* This is the default layout extracted from default
* variable values in update_num_workspaces ()
* This can be overridden using _NET_DESKTOP_LAYOUT in
* meta_x11_display_new (), if it's specified */
meta_workspace_manager_update_workspace_layout (workspace_manager,
META_DISPLAY_TOPLEFT,
FALSE,
1,
-1);
/* There must be at least one workspace at all times,
* so create that required workspace.
*/
meta_workspace_new (workspace_manager);
meta_workspace_manager_init_workspaces (workspace_manager);
meta_prefs_add_listener (prefs_changed_callback, workspace_manager);
return workspace_manager;
}
void
meta_workspace_manager_init_workspaces (MetaWorkspaceManager *workspace_manager)
{
int num;
g_return_if_fail (META_IS_WORKSPACE_MANAGER (workspace_manager));
if (meta_prefs_get_dynamic_workspaces ())
/* This will be properly updated using _NET_NUMBER_OF_DESKTOPS
* (if set) in meta_x11_display_new () */
num = 1;
else
num = meta_prefs_get_num_workspaces ();
meta_workspace_manager_update_num_workspaces (workspace_manager, META_CURRENT_TIME, num);
meta_workspace_activate (workspace_manager->workspaces->data, META_CURRENT_TIME);
meta_workspace_manager_reload_work_areas (workspace_manager);
}
int
meta_workspace_manager_get_n_workspaces (MetaWorkspaceManager *workspace_manager)
{
return g_list_length (workspace_manager->workspaces);
}
/**
* meta_workspace_manager_get_workspace_by_index:
* @workspace_manager: a #MetaWorkspaceManager
* @index: index of one of the display's workspaces
*
* Gets the workspace object for one of a workspace manager's workspaces given the workspace
* index. It's valid to call this function with an out-of-range index and it
* will robustly return %NULL.
*
* Return value: (transfer none) (nullable): the workspace object with specified
* index, or %NULL if the index is out of range.
*/
MetaWorkspace *
meta_workspace_manager_get_workspace_by_index (MetaWorkspaceManager *workspace_manager,
int idx)
{
return g_list_nth_data (workspace_manager->workspaces, idx);
}
void
meta_workspace_manager_remove_workspace (MetaWorkspaceManager *workspace_manager,
MetaWorkspace *workspace,
guint32 timestamp)
{
GList *l;
GList *next;
MetaWorkspace *neighbour = NULL;
int index;
int active_index;
gboolean active_index_changed;
int new_num;
l = g_list_find (workspace_manager->workspaces, workspace);
if (!l)
return;
next = l->next;
if (l->prev)
neighbour = l->prev->data;
else if (l->next)
neighbour = l->next->data;
else
{
/* Cannot remove the only workspace! */
return;
}
meta_workspace_relocate_windows (workspace, neighbour);
if (workspace == workspace_manager->active_workspace)
meta_workspace_activate (neighbour, timestamp);
/* To emit the signal after removing the workspace */
index = meta_workspace_index (workspace);
active_index = meta_workspace_manager_get_active_workspace_index (workspace_manager);
active_index_changed = index < active_index;
/* This also removes the workspace from the displays list */
meta_workspace_remove (workspace);
new_num = g_list_length (workspace_manager->workspaces);
if (!meta_prefs_get_dynamic_workspaces ())
meta_prefs_set_num_workspaces (new_num);
/* If deleting a workspace before the current workspace, the active
* workspace index changes, so we need to update that hint */
if (active_index_changed)
g_signal_emit (workspace_manager,
workspace_manager_signals[ACTIVE_WORKSPACE_CHANGED],
0, NULL);
for (l = next; l; l = l->next)
{
MetaWorkspace *w = l->data;
meta_workspace_index_changed (w);
}
meta_display_queue_workarea_recalc (workspace_manager->display);
g_signal_emit (workspace_manager,
workspace_manager_signals[WORKSPACE_REMOVED],
0, index);
g_object_notify (G_OBJECT (workspace_manager), "n-workspaces");
}
/**
* meta_workspace_manager_append_new_workspace:
* @workspace_manager: a #MetaWorkspaceManager
* @activate: %TRUE if the workspace should be switched to after creation
* @timestamp: if switching to a new workspace, timestamp to be used when
* focusing a window on the new workspace. (Doesn't hurt to pass a valid
* timestamp when available even if not switching workspaces.)
*
* Append a new workspace to the workspace manager and (optionally) switch to that
* display.
*
* Return value: (transfer none): the newly appended workspace.
*/
MetaWorkspace *
meta_workspace_manager_append_new_workspace (MetaWorkspaceManager *workspace_manager,
gboolean activate,
guint32 timestamp)
{
MetaWorkspace *w;
int new_num;
/* This also adds the workspace to the workspace manager list */
w = meta_workspace_new (workspace_manager);
if (!w)
return NULL;
if (activate)
meta_workspace_activate (w, timestamp);
new_num = g_list_length (workspace_manager->workspaces);
if (!meta_prefs_get_dynamic_workspaces ())
meta_prefs_set_num_workspaces (new_num);
meta_display_queue_workarea_recalc (workspace_manager->display);
g_signal_emit (workspace_manager, workspace_manager_signals[WORKSPACE_ADDED],
0, meta_workspace_index (w));
g_object_notify (G_OBJECT (workspace_manager), "n-workspaces");
return w;
}
void
meta_workspace_manager_update_num_workspaces (MetaWorkspaceManager *workspace_manager,
guint32 timestamp,
int new_num)
{
int old_num;
GList *l;
int i = 0;
GList *extras = NULL;
MetaWorkspace *last_remaining = NULL;
gboolean need_change_space = FALSE;
g_assert (new_num > 0);
if (g_list_length (workspace_manager->workspaces) == (guint) new_num)
return;
for (l = workspace_manager->workspaces; l; l = l->next)
{
MetaWorkspace *w = l->data;
if (i >= new_num)
extras = g_list_prepend (extras, w);
else
last_remaining = w;
++i;
}
old_num = i;
g_assert (last_remaining);
/* Get rid of the extra workspaces by moving all their windows
* to last_remaining, then activating last_remaining if
* one of the removed workspaces was active. This will be a bit
* wacky if the config tool for changing number of workspaces
* is on a removed workspace ;-)
*/
for (l = extras; l; l = l->next)
{
MetaWorkspace *w = l->data;
meta_workspace_relocate_windows (w, last_remaining);
if (w == workspace_manager->active_workspace)
need_change_space = TRUE;
}
if (need_change_space)
meta_workspace_activate (last_remaining, timestamp);
/* Should now be safe to free the workspaces */
for (l = extras; l; l = l->next)
{
MetaWorkspace *w = l->data;
meta_workspace_remove (w);
}
g_list_free (extras);
for (i = old_num; i < new_num; i++)
meta_workspace_new (workspace_manager);
meta_display_queue_workarea_recalc (workspace_manager->display);
for (i = old_num; i < new_num; i++)
g_signal_emit (workspace_manager,
workspace_manager_signals[WORKSPACE_ADDED],
0, i);
g_object_notify (G_OBJECT (workspace_manager), "n-workspaces");
}
/**
* meta_workspace_manager_reorder_workspace:
* @workspace_manager: a #MetaWorkspaceManager
* @workspace: a #MetaWorkspace to reorder
* @new_index: the new index of the passed workspace
*
* Reorder a workspace to a new index. If the workspace is currently active
* the "active-workspace-changed" signal will be emitted.
* If the workspace's index is the same as @new_index or the workspace
* will not be found in the list, this function will return.
*
* Calling this function will also emit the "workspaces-reordered" signal.
*/
void
meta_workspace_manager_reorder_workspace (MetaWorkspaceManager *workspace_manager,
MetaWorkspace *workspace,
int new_index)
{
GList *l;
GList *from, *to;
int index;
int active_index, new_active_index;
g_return_if_fail (META_IS_WORKSPACE_MANAGER (workspace_manager));
g_return_if_fail (new_index >= 0 &&
new_index < g_list_length (workspace_manager->workspaces));
l = g_list_find (workspace_manager->workspaces, workspace);
g_return_if_fail (l);
index = meta_workspace_index (workspace);
if (new_index == index)
return;
active_index =
meta_workspace_manager_get_active_workspace_index (workspace_manager);
workspace_manager->workspaces =
g_list_remove_link (workspace_manager->workspaces, l);
workspace_manager->workspaces =
g_list_insert (workspace_manager->workspaces, l->data, new_index);
g_list_free (l);
new_active_index =
meta_workspace_manager_get_active_workspace_index (workspace_manager);
if (active_index != new_active_index)
g_signal_emit (workspace_manager,
workspace_manager_signals[ACTIVE_WORKSPACE_CHANGED],
0, NULL);
from = g_list_nth (workspace_manager->workspaces, MIN (new_index, index));
to = g_list_nth (workspace_manager->workspaces, MAX (new_index, index));
for (l = from; l != to->next; l = l->next)
{
MetaWorkspace *w = l->data;
meta_workspace_index_changed (w);
}
meta_display_queue_workarea_recalc (workspace_manager->display);
g_signal_emit (workspace_manager,
workspace_manager_signals[WORKSPACES_REORDERED], 0, NULL);
}
void
meta_workspace_manager_update_workspace_layout (MetaWorkspaceManager *workspace_manager,
MetaDisplayCorner starting_corner,
gboolean vertical_layout,
int n_rows,
int n_columns)
{
g_return_if_fail (META_IS_WORKSPACE_MANAGER (workspace_manager));
g_return_if_fail (n_rows > 0 || n_columns > 0);
g_return_if_fail (n_rows != 0 && n_columns != 0);
if (workspace_manager->workspace_layout_overridden)
return;
workspace_manager->vertical_workspaces = vertical_layout != FALSE;
workspace_manager->starting_corner = starting_corner;
workspace_manager->rows_of_workspaces = n_rows;
workspace_manager->columns_of_workspaces = n_columns;
meta_verbose ("Workspace layout rows = %d cols = %d orientation = %d starting corner = %u",
workspace_manager->rows_of_workspaces,
workspace_manager->columns_of_workspaces,
workspace_manager->vertical_workspaces,
workspace_manager->starting_corner);
g_object_notify (G_OBJECT (workspace_manager), "layout-columns");
g_object_notify (G_OBJECT (workspace_manager), "layout-rows");
}
/**
* meta_workspace_manager_override_workspace_layout:
* @workspace_manager: a #MetaWorkspaceManager
* @starting_corner: the corner at which the first workspace is found
* @vertical_layout: if %TRUE the workspaces are laid out in columns rather than rows
* @n_rows: number of rows of workspaces, or -1 to determine the number of rows from
* @n_columns and the total number of workspaces
* @n_columns: number of columns of workspaces, or -1 to determine the number of columns from
* @n_rows and the total number of workspaces
*
* Explicitly set the layout of workspaces. Once this has been called, the contents of the
* _NET_DESKTOP_LAYOUT property on the root window are completely ignored.
*/
void
meta_workspace_manager_override_workspace_layout (MetaWorkspaceManager *workspace_manager,
MetaDisplayCorner starting_corner,
gboolean vertical_layout,
int n_rows,
int n_columns)
{
workspace_manager->workspace_layout_overridden = FALSE;
meta_workspace_manager_update_workspace_layout (workspace_manager,
starting_corner,
vertical_layout,
n_rows,
n_columns);
workspace_manager->workspace_layout_overridden = TRUE;
}
#ifdef WITH_VERBOSE_MODE
static const char *
meta_workspace_manager_corner_to_string (MetaDisplayCorner corner)
{
switch (corner)
{
case META_DISPLAY_TOPLEFT:
return "TopLeft";
case META_DISPLAY_TOPRIGHT:
return "TopRight";
case META_DISPLAY_BOTTOMLEFT:
return "BottomLeft";
case META_DISPLAY_BOTTOMRIGHT:
return "BottomRight";
}
return "Unknown";
}
#endif /* WITH_VERBOSE_MODE */
void
meta_workspace_manager_calc_workspace_layout (MetaWorkspaceManager *workspace_manager,
int num_workspaces,
int current_space,
MetaWorkspaceLayout *layout)
{
int rows, cols;
int grid_area;
int *grid;
int i, r, c;
int current_row, current_col;
rows = workspace_manager->rows_of_workspaces;
cols = workspace_manager->columns_of_workspaces;
if (rows <= 0 && cols <= 0)
cols = num_workspaces;
if (rows <= 0)
rows = num_workspaces / cols + ((num_workspaces % cols) > 0 ? 1 : 0);
if (cols <= 0)
cols = num_workspaces / rows + ((num_workspaces % rows) > 0 ? 1 : 0);
/* paranoia */
if (rows < 1)
rows = 1;
if (cols < 1)
cols = 1;
g_assert (rows != 0 && cols != 0);
grid_area = rows * cols;
meta_verbose ("Getting layout rows = %d cols = %d current = %d "
"num_spaces = %d vertical = %s corner = %s",
rows, cols, current_space, num_workspaces,
workspace_manager->vertical_workspaces ? "(true)" : "(false)",
meta_workspace_manager_corner_to_string (workspace_manager->starting_corner));
/* ok, we want to setup the distances in the workspace array to go
* in each direction. Remember, there are many ways that a workspace
* array can be setup.
* see http://www.freedesktop.org/standards/wm-spec/1.2/html/x109.html
* and look at the _NET_DESKTOP_LAYOUT section for details.
* For instance:
*/
/* starting_corner = META_DISPLAY_TOPLEFT
* vertical_workspaces = 0 vertical_workspaces=1
* 1234 1357
* 5678 2468
*
* starting_corner = META_DISPLAY_TOPRIGHT
* vertical_workspaces = 0 vertical_workspaces=1
* 4321 7531
* 8765 8642
*
* starting_corner = META_DISPLAY_BOTTOMLEFT
* vertical_workspaces = 0 vertical_workspaces=1
* 5678 2468
* 1234 1357
*
* starting_corner = META_DISPLAY_BOTTOMRIGHT
* vertical_workspaces = 0 vertical_workspaces=1
* 8765 8642
* 4321 7531
*
*/
/* keep in mind that we could have a ragged layout, e.g. the "8"
* in the above grids could be missing
*/
grid = g_new (int, grid_area);
i = 0;
switch (workspace_manager->starting_corner)
{
case META_DISPLAY_TOPLEFT:
if (workspace_manager->vertical_workspaces)
{
c = 0;
while (c < cols)
{
r = 0;
while (r < rows)
{
grid[r*cols+c] = i;
++i;
++r;
}
++c;
}
}
else
{
r = 0;
while (r < rows)
{
c = 0;
while (c < cols)
{
grid[r*cols+c] = i;
++i;
++c;
}
++r;
}
}
break;
case META_DISPLAY_TOPRIGHT:
if (workspace_manager->vertical_workspaces)
{
c = cols - 1;
while (c >= 0)
{
r = 0;
while (r < rows)
{
grid[r*cols+c] = i;
++i;
++r;
}
--c;
}
}
else
{
r = 0;
while (r < rows)
{
c = cols - 1;
while (c >= 0)
{
grid[r*cols+c] = i;
++i;
--c;
}
++r;
}
}
break;
case META_DISPLAY_BOTTOMLEFT:
if (workspace_manager->vertical_workspaces)
{
c = 0;
while (c < cols)
{
r = rows - 1;
while (r >= 0)
{
grid[r*cols+c] = i;
++i;
--r;
}
++c;
}
}
else
{
r = rows - 1;
while (r >= 0)
{
c = 0;
while (c < cols)
{
grid[r*cols+c] = i;
++i;
++c;
}
--r;
}
}
break;
case META_DISPLAY_BOTTOMRIGHT:
if (workspace_manager->vertical_workspaces)
{
c = cols - 1;
while (c >= 0)
{
r = rows - 1;
while (r >= 0)
{
grid[r*cols+c] = i;
++i;
--r;
}
--c;
}
}
else
{
r = rows - 1;
while (r >= 0)
{
c = cols - 1;
while (c >= 0)
{
grid[r*cols+c] = i;
++i;
--c;
}
--r;
}
}
break;
}
if (i != grid_area)
meta_bug ("did not fill in the whole workspace grid in %s (%d filled)",
G_STRFUNC, i);
current_row = 0;
current_col = 0;
r = 0;
while (r < rows)
{
c = 0;
while (c < cols)
{
if (grid[r*cols+c] == current_space)
{
current_row = r;
current_col = c;
}
else if (grid[r*cols+c] >= num_workspaces)
{
/* flag nonexistent spaces with -1 */
grid[r*cols+c] = -1;
}
++c;
}
++r;
}
layout->rows = rows;
layout->cols = cols;
layout->grid = grid;
layout->grid_area = grid_area;
layout->current_row = current_row;
layout->current_col = current_col;
#ifdef WITH_VERBOSE_MODE
if (meta_is_verbose ())
{
g_autoptr (GString) str = NULL;
str = g_string_new ("Workspace layout:");
r = 0;
while (r < layout->rows)
{
g_string_append (str, "\n");
c = 0;
while (c < layout->cols)
{
if (r == layout->current_row &&
c == layout->current_col)
{
g_string_append_printf (str, "*%2d ",
layout->grid[r * layout->cols + c]);
}
else
{
g_string_append_printf (str, "%3d ",
layout->grid[r * layout->cols + c]);
}
++c;
}
++r;
}
meta_verbose ("%s", str->str);
}
#endif /* WITH_VERBOSE_MODE */
}
void
meta_workspace_manager_free_workspace_layout (MetaWorkspaceLayout *layout)
{
g_free (layout->grid);
}
static void
queue_windows_showing (MetaWorkspaceManager *workspace_manager)
{
GSList *windows, *l;
/* Must operate on all windows on display instead of just on the
* active_workspace's window list, because the active_workspace's
* window list may not contain the on_all_workspace windows.
*/
windows = meta_display_list_windows (workspace_manager->display, META_LIST_DEFAULT);
for (l = windows; l; l = l->next)
{
MetaWindow *w = l->data;
meta_window_queue (w, META_QUEUE_CALC_SHOWING);
}
g_slist_free (windows);
}
void
meta_workspace_manager_minimize_all_on_active_workspace_except (MetaWorkspaceManager *workspace_manager,
MetaWindow *keep)
{
GList *l;
for (l = workspace_manager->active_workspace->windows; l; l = l->next)
{
MetaWindow *w = l->data;
if (w->has_minimize_func && w != keep)
meta_window_minimize (w);
}
}
void
meta_workspace_manager_show_desktop (MetaWorkspaceManager *workspace_manager,
guint32 timestamp)
{
GList *l;
if (workspace_manager->active_workspace->showing_desktop)
return;
workspace_manager->active_workspace->showing_desktop = TRUE;
queue_windows_showing (workspace_manager);
/* Focus the most recently used META_WINDOW_DESKTOP window, if there is one;
* see bug 159257.
*/
for (l = workspace_manager->active_workspace->mru_list; l; l = l->next)
{
MetaWindow *w = l->data;
if (w->type == META_WINDOW_DESKTOP)
{
meta_window_focus (w, timestamp);
break;
}
}
g_signal_emit (workspace_manager,
workspace_manager_signals[SHOWING_DESKTOP_CHANGED],
0, NULL);
}
void
meta_workspace_manager_unshow_desktop (MetaWorkspaceManager *workspace_manager)
{
if (!workspace_manager->active_workspace->showing_desktop)
return;
workspace_manager->active_workspace->showing_desktop = FALSE;
queue_windows_showing (workspace_manager);
g_signal_emit (workspace_manager,
workspace_manager_signals[SHOWING_DESKTOP_CHANGED],
0, NULL);
}
/**
* meta_workspace_manager_get_workspaces: (skip)
* @workspace_manager: a #MetaWorkspaceManager
*
* Returns: (transfer none) (element-type Meta.Workspace): The workspaces for @display
*/
GList *
meta_workspace_manager_get_workspaces (MetaWorkspaceManager *workspace_manager)
{
return workspace_manager->workspaces;
}
int
meta_workspace_manager_get_active_workspace_index (MetaWorkspaceManager *workspace_manager)
{
MetaWorkspace *active = workspace_manager->active_workspace;
if (!active)
return -1;
return meta_workspace_index (active);
}
/**
* meta_workspace_manager_get_active_workspace:
* @workspace_manager: A #MetaWorkspaceManager
*
* Returns: (transfer none): The current workspace
*/
MetaWorkspace *
meta_workspace_manager_get_active_workspace (MetaWorkspaceManager *workspace_manager)
{
return workspace_manager->active_workspace;
}
void
meta_workspace_manager_workspace_switched (MetaWorkspaceManager *workspace_manager,
int from,
int to,
MetaMotionDirection direction)
{
g_signal_emit (workspace_manager,
workspace_manager_signals[WORKSPACE_SWITCHED], 0,
from, to, direction);
}
static void
prefs_changed_callback (MetaPreference pref,
gpointer data)
{
MetaWorkspaceManager *workspace_manager = data;
if ((pref == META_PREF_NUM_WORKSPACES ||
pref == META_PREF_DYNAMIC_WORKSPACES) &&
!meta_prefs_get_dynamic_workspaces ())
{
guint32 timestamp;
int new_num;
timestamp =
meta_display_get_current_time_roundtrip (workspace_manager->display);
new_num = meta_prefs_get_num_workspaces ();
meta_workspace_manager_update_num_workspaces (workspace_manager,
timestamp, new_num);
}
}
int
meta_workspace_manager_get_layout_columns (MetaWorkspaceManager *workspace_manager)
{
g_return_val_if_fail (META_IS_WORKSPACE_MANAGER (workspace_manager), -1);
return workspace_manager->columns_of_workspaces;
}
int
meta_workspace_manager_get_layout_rows (MetaWorkspaceManager *workspace_manager)
{
g_return_val_if_fail (META_IS_WORKSPACE_MANAGER (workspace_manager), -1);
return workspace_manager->rows_of_workspaces;
}
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