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mutter/src/screen.c
Havoc Pennington 94b6dde6bb make it static 
2002-10-01  Havoc Pennington  <hp@pobox.com>

	* src/screen.c (meta_screen_resize_func): make it static

	* src/stack.c (get_standalone_layer): put above/below windows
	in an appropriate layer.

	* src/screen.c (set_supported_hint): say we support above/below

	* src/display.h (struct _MetaDisplay): add _NET_WM_STATE_ABOVE,
	_NET_WM_STATE_BELOW atoms

	* src/window.c (meta_window_client_message): handle above/below
	state messages
	(set_net_wm_state): handler above/below state
	(update_net_wm_state): handle above/below states
2002-10-02 00:47:29 +00:00

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/* Metacity X screen handler */
/*
* Copyright (C) 2001, 2002 Havoc Pennington
* Copyright (C) 2002 Red Hat Inc.
* Some ICCCM manager selection code derived from fvwm2,
* Copyright (C) 2001 Dominik Vogt, Matthias Clasen, and fvwm2 team
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <config.h>
#include "screen.h"
#include "util.h"
#include "errors.h"
#include "window.h"
#include "frame.h"
#include "prefs.h"
#include "workspace.h"
#include "keybindings.h"
#include "stack.h"
#include "xprops.h"
#ifdef HAVE_SOLARIS_XINERAMA
#include <X11/extensions/xinerama.h>
#endif
#ifdef HAVE_XFREE_XINERAMA
#include <X11/extensions/Xinerama.h>
#endif
#include <X11/Xatom.h>
#include <locale.h>
#include <string.h>
#include <stdio.h>
static char* get_screen_name (MetaDisplay *display,
int number);
static void update_num_workspaces (MetaScreen *screen);
static void update_focus_mode (MetaScreen *screen);
static void prefs_changed_callback (MetaPreference pref,
gpointer data);
static int
set_wm_check_hint (MetaScreen *screen)
{
unsigned long data[1];
g_return_val_if_fail (screen->display->leader_window != None, 0);
data[0] = screen->display->leader_window;
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom_net_supporting_wm_check,
XA_WINDOW,
32, PropModeReplace, (guchar*) data, 1);
/* Legacy GNOME hint (uses cardinal, dunno why) */
/* do this after setting up window fully, to avoid races
* with clients listening to property notify on root.
*/
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom_win_supporting_wm_check,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 1);
return Success;
}
static int
set_supported_hint (MetaScreen *screen)
{
#define N_SUPPORTED 44
#define N_WIN_SUPPORTED 1
Atom atoms[N_SUPPORTED];
atoms[0] = screen->display->atom_net_wm_name;
atoms[1] = screen->display->atom_net_close_window;
atoms[2] = screen->display->atom_net_wm_state;
atoms[3] = screen->display->atom_net_wm_state_shaded;
atoms[4] = screen->display->atom_net_wm_state_maximized_vert;
atoms[5] = screen->display->atom_net_wm_state_maximized_horz;
atoms[6] = screen->display->atom_net_wm_desktop;
atoms[7] = screen->display->atom_net_number_of_desktops;
atoms[8] = screen->display->atom_net_current_desktop;
atoms[9] = screen->display->atom_net_wm_window_type;
atoms[10] = screen->display->atom_net_wm_window_type_desktop;
atoms[11] = screen->display->atom_net_wm_window_type_dock;
atoms[12] = screen->display->atom_net_wm_window_type_toolbar;
atoms[13] = screen->display->atom_net_wm_window_type_menu;
atoms[14] = screen->display->atom_net_wm_window_type_dialog;
atoms[15] = screen->display->atom_net_wm_window_type_normal;
atoms[16] = screen->display->atom_net_wm_state_modal;
atoms[17] = screen->display->atom_net_client_list;
atoms[18] = screen->display->atom_net_client_list_stacking;
atoms[19] = screen->display->atom_net_wm_state_skip_taskbar;
atoms[20] = screen->display->atom_net_wm_state_skip_pager;
atoms[21] = screen->display->atom_net_wm_icon;
atoms[22] = screen->display->atom_net_wm_moveresize;
atoms[23] = screen->display->atom_net_wm_state_hidden;
atoms[24] = screen->display->atom_net_wm_window_type_utility;
atoms[25] = screen->display->atom_net_wm_window_type_splashscreen;
atoms[26] = screen->display->atom_net_wm_state_fullscreen;
atoms[27] = screen->display->atom_net_wm_ping;
atoms[28] = screen->display->atom_net_active_window;
atoms[29] = screen->display->atom_net_workarea;
atoms[30] = screen->display->atom_net_showing_desktop;
atoms[31] = screen->display->atom_net_desktop_layout;
atoms[32] = screen->display->atom_net_desktop_names;
atoms[33] = screen->display->atom_net_wm_allowed_actions;
atoms[34] = screen->display->atom_net_wm_action_move;
atoms[35] = screen->display->atom_net_wm_action_resize;
atoms[36] = screen->display->atom_net_wm_action_shade;
atoms[37] = screen->display->atom_net_wm_action_stick;
atoms[38] = screen->display->atom_net_wm_action_maximize_horz;
atoms[39] = screen->display->atom_net_wm_action_maximize_vert;
atoms[40] = screen->display->atom_net_wm_action_change_desktop;
atoms[41] = screen->display->atom_net_wm_action_close;
atoms[42] = screen->display->atom_net_wm_state_above;
atoms[43] = screen->display->atom_net_wm_state_below;
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom_net_supported,
XA_ATOM,
32, PropModeReplace, (guchar*) atoms, N_SUPPORTED);
/* Set legacy GNOME hints */
atoms[0] = screen->display->atom_win_layer;
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom_win_protocols,
XA_ATOM,
32, PropModeReplace, (guchar*) atoms, N_WIN_SUPPORTED);
return Success;
#undef N_SUPPORTED
}
static int
set_wm_icon_size_hint (MetaScreen *screen)
{
#define N_VALS 6
gulong vals[N_VALS];
/* min width, min height, max w, max h, width inc, height inc */
vals[0] = META_ICON_WIDTH;
vals[1] = META_ICON_HEIGHT;
vals[2] = META_ICON_WIDTH;
vals[3] = META_ICON_HEIGHT;
vals[4] = 0;
vals[5] = 0;
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom_wm_icon_size,
XA_CARDINAL,
32, PropModeReplace, (guchar*) vals, N_VALS);
return Success;
#undef N_VALS
}
static void
reload_xinerama_infos (MetaScreen *screen)
{
MetaDisplay *display;
display = screen->display;
if (screen->xinerama_infos)
g_free (screen->xinerama_infos);
screen->xinerama_infos = NULL;
screen->n_xinerama_infos = 0;
screen->last_xinerama_index = 0;
screen->display->xinerama_cache_invalidated = TRUE;
#ifdef HAVE_XFREE_XINERAMA
if (XineramaIsActive (display->xdisplay))
{
XineramaScreenInfo *infos;
int n_infos;
int i;
n_infos = 0;
infos = XineramaQueryScreens (display->xdisplay, &n_infos);
meta_topic (META_DEBUG_XINERAMA,
"Found %d Xinerama screens on display %s\n",
n_infos, display->name);
if (n_infos > 0)
{
screen->xinerama_infos = g_new (MetaXineramaScreenInfo, n_infos);
screen->n_xinerama_infos = n_infos;
i = 0;
while (i < n_infos)
{
screen->xinerama_infos[i].number = infos[i].screen_number;
screen->xinerama_infos[i].x_origin = infos[i].x_org;
screen->xinerama_infos[i].y_origin = infos[i].y_org;
screen->xinerama_infos[i].width = infos[i].width;
screen->xinerama_infos[i].height = infos[i].height;
meta_topic (META_DEBUG_XINERAMA,
"Xinerama %d is %d,%d %d x %d\n",
screen->xinerama_infos[i].number,
screen->xinerama_infos[i].x_origin,
screen->xinerama_infos[i].y_origin,
screen->xinerama_infos[i].width,
screen->xinerama_infos[i].height);
++i;
}
}
meta_XFree (infos);
}
else
{
meta_topic (META_DEBUG_XINERAMA,
"No XFree86 Xinerama extension or XFree86 Xinerama inactive on display %s\n",
display->name);
}
#else
meta_topic (META_DEBUG_XINERAMA,
"Metacity compiled without XFree86 Xinerama support\n");
#endif /* HAVE_XFREE_XINERAMA */
#ifdef HAVE_SOLARIS_XINERAMA
/* This code from GDK, Copyright (C) 2002 Sun Microsystems */
if (screen->n_xinerama_infos == 0 &&
XineramaGetState (screen->display->xdisplay,
screen->number))
{
XRectangle monitors[MAXFRAMEBUFFERS];
unsigned char hints[16];
int result;
int n_monitors;
int i;
n_monitors = 0;
result = XineramaGetInfo (screen->display->xdisplay,
screen->number,
monitors, hints,
&n_monitors);
/* Yes I know it should be Success but the current implementation
* returns the num of monitor
*/
if (result > 0)
{
g_assert (n_monitors > 0);
screen->xinerama_infos = g_new (MetaXineramaScreenInfo, n_monitors);
screen->n_xinerama_infos = n_monitors;
i = 0;
while (i < n_monitors)
{
screen->xinerama_infos[i].number = i;
screen->xinerama_infos[i].x_origin = monitors[i].x;
screen->xinerama_infos[i].y_origin = monitors[i].y;
screen->xinerama_infos[i].width = monitors[i].width;
screen->xinerama_infos[i].height = monitors[i].height;
meta_topic (META_DEBUG_XINERAMA,
"Xinerama %d is %d,%d %d x %d\n",
screen->xinerama_infos[i].number,
screen->xinerama_infos[i].x_origin,
screen->xinerama_infos[i].y_origin,
screen->xinerama_infos[i].width,
screen->xinerama_infos[i].height);
++i;
}
}
}
else if (screen->n_xinerama_infos == 0)
{
meta_topic (META_DEBUG_XINERAMA,
"No Solaris Xinerama extension or Solaris Xinerama inactive on display %s\n",
display->name);
}
#else
meta_topic (META_DEBUG_XINERAMA,
"Metacity compiled without Solaris Xinerama support\n");
#endif /* HAVE_SOLARIS_XINERAMA */
/* If no Xinerama, fill in the single screen info so
* we can use the field unconditionally
*/
if (screen->n_xinerama_infos == 0)
{
if (g_getenv ("METACITY_DEBUG_XINERAMA"))
{
meta_topic (META_DEBUG_XINERAMA,
"Pretending a single monitor has two Xinerama screens\n");
screen->xinerama_infos = g_new (MetaXineramaScreenInfo, 2);
screen->n_xinerama_infos = 2;
screen->xinerama_infos[0].number = 0;
screen->xinerama_infos[0].x_origin = 0;
screen->xinerama_infos[0].y_origin = 0;
screen->xinerama_infos[0].width = screen->width / 2;
screen->xinerama_infos[0].height = screen->height;
screen->xinerama_infos[1].number = 1;
screen->xinerama_infos[1].x_origin = screen->width / 2;
screen->xinerama_infos[1].y_origin = 0;
screen->xinerama_infos[1].width = screen->width / 2 + screen->width % 2;
screen->xinerama_infos[1].height = screen->height;
}
else
{
meta_topic (META_DEBUG_XINERAMA,
"No Xinerama screens, using default screen info\n");
screen->xinerama_infos = g_new (MetaXineramaScreenInfo, 1);
screen->n_xinerama_infos = 1;
screen->xinerama_infos[0].number = 0;
screen->xinerama_infos[0].x_origin = 0;
screen->xinerama_infos[0].y_origin = 0;
screen->xinerama_infos[0].width = screen->width;
screen->xinerama_infos[0].height = screen->height;
}
}
g_assert (screen->n_xinerama_infos > 0);
g_assert (screen->xinerama_infos != NULL);
}
MetaScreen*
meta_screen_new (MetaDisplay *display,
int number)
{
MetaScreen *screen;
Window xroot;
Display *xdisplay;
XWindowAttributes attr;
Window new_wm_sn_owner;
Window current_wm_sn_owner;
gboolean replace_current_wm;
Atom wm_sn_atom;
char buf[128];
Time manager_timestamp;
replace_current_wm = meta_get_replace_current_wm ();
/* Only display->name, display->xdisplay, and display->error_traps
* can really be used in this function, since normally screens are
* created from the MetaDisplay constructor
*/
xdisplay = display->xdisplay;
meta_verbose ("Trying screen %d on display '%s'\n",
number, display->name);
xroot = RootWindow (xdisplay, number);
/* FVWM checks for None here, I don't know if this
* ever actually happens
*/
if (xroot == None)
{
meta_warning (_("Screen %d on display '%s' is invalid\n"),
number, display->name);
return NULL;
}
sprintf (buf, "WM_S%d", number);
wm_sn_atom = XInternAtom (xdisplay, buf, False);
current_wm_sn_owner = XGetSelectionOwner (xdisplay, wm_sn_atom);
if (current_wm_sn_owner != None)
{
XSetWindowAttributes attrs;
if (!replace_current_wm)
{
meta_warning (_("Screen %d on display \"%s\" already has a window manager; try using the --replace option to replace the current window manager.\n"),
number, display->name);
return NULL;
}
/* We want to find out when the current selection owner dies */
meta_error_trap_push (display);
attrs.event_mask = StructureNotifyMask;
XChangeWindowAttributes (xdisplay,
current_wm_sn_owner, CWEventMask, &attrs);
if (meta_error_trap_pop (display) != Success)
current_wm_sn_owner = None; /* don't wait for it to die later on */
}
new_wm_sn_owner = meta_create_offscreen_window (xdisplay, xroot);
{
/* Generate a timestamp */
XSetWindowAttributes attrs;
XEvent event;
attrs.event_mask = PropertyChangeMask;
XChangeWindowAttributes (xdisplay, new_wm_sn_owner, CWEventMask, &attrs);
XChangeProperty (xdisplay,
new_wm_sn_owner, XA_WM_CLASS, XA_STRING, 8,
PropModeAppend, NULL, 0);
XWindowEvent (xdisplay, new_wm_sn_owner, PropertyChangeMask, &event);
attrs.event_mask = NoEventMask;
XChangeWindowAttributes (display->xdisplay,
new_wm_sn_owner, CWEventMask, &attrs);
manager_timestamp = event.xproperty.time;
}
XSetSelectionOwner (xdisplay, wm_sn_atom, new_wm_sn_owner,
manager_timestamp);
if (XGetSelectionOwner (xdisplay, wm_sn_atom) != new_wm_sn_owner)
{
meta_warning (_("Could not acquire window manager selection on screen %d display \"%s\"\n"),
number, display->name);
XDestroyWindow (xdisplay, new_wm_sn_owner);
return NULL;
}
{
/* Send client message indicating that we are now the WM */
XClientMessageEvent ev;
ev.type = ClientMessage;
ev.window = xroot;
ev.message_type = display->atom_manager;
ev.format = 32;
ev.data.l[0] = manager_timestamp;
ev.data.l[1] = wm_sn_atom;
XSendEvent (xdisplay, xroot, False, StructureNotifyMask, (XEvent*)&ev);
}
/* Wait for old window manager to go away */
if (current_wm_sn_owner != None)
{
XEvent event;
/* We sort of block infinitely here which is probably lame. */
meta_verbose ("Waiting for old window manager to exit\n");
do
{
XWindowEvent (xdisplay, current_wm_sn_owner,
StructureNotifyMask, &event);
}
while (event.type != DestroyNotify);
}
/* select our root window events */
meta_error_trap_push (display);
/* We need to or with the existing event mask since
* gtk+ may be interested in other events.
*/
XGetWindowAttributes (xdisplay, xroot, &attr);
XSelectInput (xdisplay,
xroot,
SubstructureRedirectMask | SubstructureNotifyMask |
ColormapChangeMask | PropertyChangeMask |
LeaveWindowMask | EnterWindowMask |
ButtonPressMask | ButtonReleaseMask |
KeyPressMask | KeyReleaseMask |
FocusChangeMask | StructureNotifyMask |
attr.your_event_mask);
if (meta_error_trap_pop (display) != Success)
{
meta_warning (_("Screen %d on display \"%s\" already has a window manager\n"),
number, display->name);
XDestroyWindow (xdisplay, new_wm_sn_owner);
return NULL;
}
screen = g_new (MetaScreen, 1);
screen->closing = 0;
screen->display = display;
screen->number = number;
screen->screen_name = get_screen_name (display, number);
screen->xscreen = ScreenOfDisplay (xdisplay, number);
screen->xroot = xroot;
screen->width = WidthOfScreen (screen->xscreen);
screen->height = HeightOfScreen (screen->xscreen);
screen->current_cursor = -1; /* invalid/unset */
screen->default_xvisual = DefaultVisualOfScreen (screen->xscreen);
screen->default_depth = DefaultDepthOfScreen (screen->xscreen);
screen->wm_sn_selection_window = new_wm_sn_owner;
screen->wm_sn_atom = wm_sn_atom;
screen->wm_sn_timestamp = manager_timestamp;
screen->work_area_idle = 0;
screen->active_workspace = NULL;
screen->rows_of_workspaces = 1;
screen->columns_of_workspaces = -1;
screen->vertical_workspaces = FALSE;
screen->starting_corner = META_SCREEN_TOPLEFT;
screen->xinerama_infos = NULL;
screen->n_xinerama_infos = 0;
screen->last_xinerama_index = 0;
reload_xinerama_infos (screen);
meta_screen_set_cursor (screen, META_CURSOR_DEFAULT);
if (display->leader_window == None)
display->leader_window = meta_create_offscreen_window (display->xdisplay,
screen->xroot);
if (display->no_focus_window == None)
{
display->no_focus_window = meta_create_offscreen_window (display->xdisplay,
screen->xroot);
XSelectInput (display->xdisplay, display->no_focus_window,
FocusChangeMask | KeyPressMask | KeyReleaseMask);
XMapWindow (display->xdisplay, display->no_focus_window);
}
set_wm_icon_size_hint (screen);
set_supported_hint (screen);
set_wm_check_hint (screen);
meta_screen_update_workspace_layout (screen);
meta_screen_update_workspace_names (screen);
/* Screens must have at least one workspace at all times,
* so create that required workspace.
*/
meta_workspace_activate (meta_workspace_new (screen));
update_num_workspaces (screen);
screen->all_keys_grabbed = FALSE;
screen->keys_grabbed = FALSE;
meta_screen_grab_keys (screen);
screen->ui = meta_ui_new (screen->display->xdisplay,
screen->xscreen);
screen->tab_popup = NULL;
screen->stack = meta_stack_new (screen);
meta_prefs_add_listener (prefs_changed_callback, screen);
meta_verbose ("Added screen %d ('%s') root 0x%lx\n",
screen->number, screen->screen_name, screen->xroot);
return screen;
}
void
meta_screen_free (MetaScreen *screen)
{
MetaDisplay *display;
display = screen->display;
screen->closing += 1;
meta_display_grab (display);
meta_display_unmanage_windows_for_screen (display, screen);
meta_prefs_remove_listener (prefs_changed_callback, screen);
meta_screen_ungrab_keys (screen);
meta_ui_free (screen->ui);
meta_stack_free (screen->stack);
meta_error_trap_push (screen->display);
XSelectInput (screen->display->xdisplay, screen->xroot, 0);
if (meta_error_trap_pop (screen->display) != Success)
meta_warning (_("Could not release screen %d on display \"%s\"\n"),
screen->number, screen->display->name);
XDestroyWindow (screen->display->xdisplay,
screen->wm_sn_selection_window);
if (screen->work_area_idle != 0)
g_source_remove (screen->work_area_idle);
g_free (screen->screen_name);
g_free (screen);
XFlush (display->xdisplay);
meta_display_ungrab (display);
}
void
meta_screen_manage_all_windows (MetaScreen *screen)
{
Window ignored1, ignored2;
Window *children;
int n_children;
int i;
/* Must grab server to avoid obvious race condition */
meta_display_grab (screen->display);
meta_error_trap_push (screen->display);
XQueryTree (screen->display->xdisplay,
screen->xroot,
&ignored1, &ignored2, &children, &n_children);
if (meta_error_trap_pop (screen->display))
{
meta_display_ungrab (screen->display);
return;
}
meta_stack_freeze (screen->stack);
i = 0;
while (i < n_children)
{
meta_window_new (screen->display, children[i], TRUE);
++i;
}
meta_stack_thaw (screen->stack);
meta_display_ungrab (screen->display);
if (children)
XFree (children);
}
MetaScreen*
meta_screen_for_x_screen (Screen *xscreen)
{
MetaDisplay *display;
display = meta_display_for_x_display (DisplayOfScreen (xscreen));
if (display == NULL)
return NULL;
return meta_display_screen_for_x_screen (display, xscreen);
}
static void
prefs_changed_callback (MetaPreference pref,
gpointer data)
{
MetaScreen *screen = data;
if (pref == META_PREF_NUM_WORKSPACES)
{
update_num_workspaces (screen);
}
else if (pref == META_PREF_FOCUS_MODE)
{
update_focus_mode (screen);
}
}
static char*
get_screen_name (MetaDisplay *display,
int number)
{
char *p;
char *dname;
char *scr;
/* DisplayString gives us a sort of canonical display,
* vs. the user-entered name from XDisplayName()
*/
dname = g_strdup (DisplayString (display->xdisplay));
/* Change display name to specify this screen.
*/
p = strrchr (dname, ':');
if (p)
{
p = strchr (p, '.');
if (p)
*p = '\0';
}
scr = g_strdup_printf ("%s.%d", dname, number);
g_free (dname);
return scr;
}
static gint
ptrcmp (gconstpointer a, gconstpointer b)
{
if (a < b)
return -1;
else if (a > b)
return 1;
else
return 0;
}
static void
listify_func (gpointer key, gpointer value, gpointer data)
{
GSList **listp;
listp = data;
*listp = g_slist_prepend (*listp, value);
}
void
meta_screen_foreach_window (MetaScreen *screen,
MetaScreenWindowFunc func,
gpointer data)
{
GSList *winlist;
GSList *tmp;
/* If we end up doing this often, just keeping a list
* of windows might be sensible.
*/
winlist = NULL;
g_hash_table_foreach (screen->display->window_ids,
listify_func,
&winlist);
winlist = g_slist_sort (winlist, ptrcmp);
tmp = winlist;
while (tmp != NULL)
{
/* If the next node doesn't contain this window
* a second time, delete the window.
*/
if (tmp->next == NULL ||
(tmp->next && tmp->next->data != tmp->data))
{
MetaWindow *window = tmp->data;
if (window->screen == screen)
(* func) (screen, window, data);
}
tmp = tmp->next;
}
g_slist_free (winlist);
}
static void
queue_draw (MetaScreen *screen, MetaWindow *window, gpointer data)
{
if (window->frame)
meta_frame_queue_draw (window->frame);
}
void
meta_screen_queue_frame_redraws (MetaScreen *screen)
{
meta_screen_foreach_window (screen, queue_draw, NULL);
}
static void
queue_resize (MetaScreen *screen, MetaWindow *window, gpointer data)
{
meta_window_queue_move_resize (window);
}
void
meta_screen_queue_window_resizes (MetaScreen *screen)
{
meta_screen_foreach_window (screen, queue_resize, NULL);
}
int
meta_screen_get_n_workspaces (MetaScreen *screen)
{
GList *tmp;
int i;
i = 0;
tmp = screen->display->workspaces;
while (tmp != NULL)
{
MetaWorkspace *w = tmp->data;
if (w->screen == screen)
++i;
tmp = tmp->next;
}
return i;
}
static int
set_number_of_spaces_hint (MetaScreen *screen,
int n_spaces)
{
unsigned long data[1];
if (screen->closing > 0)
return 0;
data[0] = n_spaces;
meta_verbose ("Setting _NET_NUMBER_OF_DESKTOPS to %ld\n", data[0]);
meta_error_trap_push (screen->display);
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom_net_number_of_desktops,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 1);
return meta_error_trap_pop (screen->display);
}
static void
update_num_workspaces (MetaScreen *screen)
{
int new_num;
GList *tmp;
int i;
GList *extras;
MetaWorkspace *last_remaining;
gboolean need_change_space;
new_num = meta_prefs_get_num_workspaces ();
g_assert (new_num > 0);
last_remaining = NULL;
extras = NULL;
i = 0;
tmp = screen->display->workspaces;
while (tmp != NULL)
{
MetaWorkspace *w = tmp->data;
if (w->screen == screen)
{
++i;
if (i > new_num)
extras = g_list_prepend (extras, w);
else
last_remaining = w;
}
tmp = tmp->next;
}
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 ;-)
*/
need_change_space = FALSE;
tmp = extras;
while (tmp != NULL)
{
MetaWorkspace *w = tmp->data;
meta_workspace_relocate_windows (w, last_remaining);
if (w == screen->active_workspace)
need_change_space = TRUE;
tmp = tmp->next;
}
if (need_change_space)
meta_workspace_activate (last_remaining);
/* Should now be safe to free the workspaces */
tmp = extras;
while (tmp != NULL)
{
MetaWorkspace *w = tmp->data;
g_assert (w->windows == NULL);
meta_workspace_free (w);
tmp = tmp->next;
}
g_list_free (extras);
while (i < new_num)
{
meta_workspace_new (screen);
++i;
}
set_number_of_spaces_hint (screen, new_num);
meta_screen_queue_workarea_recalc (screen);
}
static void
update_focus_mode (MetaScreen *screen)
{
/* nothing to do anymore */ ;
}
void
meta_screen_set_cursor (MetaScreen *screen,
MetaCursor cursor)
{
Cursor xcursor;
if (cursor == screen->current_cursor)
return;
screen->current_cursor = cursor;
xcursor = meta_display_create_x_cursor (screen->display, cursor);
XDefineCursor (screen->display->xdisplay, screen->xroot, xcursor);
XFreeCursor (screen->display->xdisplay, xcursor);
}
void
meta_screen_ensure_tab_popup (MetaScreen *screen,
MetaTabList type)
{
MetaTabEntry *entries;
GSList *tab_list;
GSList *tmp;
int len;
int i;
if (screen->tab_popup)
return;
tab_list = meta_display_get_tab_list (screen->display,
type,
screen,
screen->active_workspace);
len = g_slist_length (tab_list);
entries = g_new (MetaTabEntry, len + 1);
entries[len].key = NULL;
entries[len].title = NULL;
entries[len].icon = NULL;
i = 0;
tmp = tab_list;
while (i < len)
{
MetaWindow *window;
MetaRectangle r;
window = tmp->data;
entries[i].key = (MetaTabEntryKey) window->xwindow;
entries[i].title = window->title;
entries[i].icon = window->icon;
meta_window_get_outer_rect (window, &r);
entries[i].x = r.x;
entries[i].y = r.y;
entries[i].width = r.width;
entries[i].height = r.height;
/* Find inside of highlight rectangle to be used
* when window is outlined for tabbing.
* This should be the size of the east/west frame,
* and the size of the south frame, on those sides.
* on the top it should be the size of the south frame
* edge.
*/
if (window->frame)
{
int south = window->frame->rect.height - window->frame->child_y -
window->rect.height;
int east = window->frame->child_x;
entries[i].inner_x = east;
entries[i].inner_y = south;
entries[i].inner_width = window->rect.width;
entries[i].inner_height = window->frame->rect.height - south * 2;
}
else
{
/* Use an arbitrary border size */
#define OUTLINE_WIDTH 5
entries[i].inner_x = OUTLINE_WIDTH;
entries[i].inner_y = OUTLINE_WIDTH;
entries[i].inner_width = window->rect.width - OUTLINE_WIDTH * 2;
entries[i].inner_height = window->rect.height - OUTLINE_WIDTH * 2;
}
++i;
tmp = tmp->next;
}
screen->tab_popup = meta_ui_tab_popup_new (entries,
screen->number,
len,
5, /* FIXME */
TRUE);
g_free (entries);
g_slist_free (tab_list);
/* don't show tab popup, since proper window isn't selected yet */
}
void
meta_screen_ensure_workspace_popup (MetaScreen *screen)
{
MetaTabEntry *entries;
int len, rows, cols;
int i;
if (screen->tab_popup)
return;
len = meta_screen_get_n_workspaces (screen);
entries = g_new (MetaTabEntry, len + 1);
entries[len].key = NULL;
entries[len].title = NULL;
entries[len].icon = NULL;
meta_screen_calc_workspace_layout (screen, len, &rows, &cols);
/* FIXME: handle screen->starting_corner
*/
if (screen->vertical_workspaces)
{
int j, k, iter;
for (i = 0, iter = 0; i < rows; ++i)
{
for (j = 0; j < cols; ++j)
{
MetaWorkspace *workspace;
k = i + (j * rows);
if (k >= len)
break;
workspace = meta_display_get_workspace_by_index (screen->display, k);
g_assert (workspace);
entries[iter].key = (MetaTabEntryKey) workspace;
entries[iter].title = workspace->name;
entries[iter].icon = NULL;
iter++;
}
}
g_assert (iter == len);
}
else
{
for (i = 0; i < len; ++i)
{
MetaWorkspace *workspace;
workspace = meta_display_get_workspace_by_index (screen->display, i);
g_assert (workspace);
entries[i].key = (MetaTabEntryKey) workspace;
entries[i].title = workspace->name;
entries[i].icon = NULL;
}
}
screen->tab_popup = meta_ui_tab_popup_new (entries,
screen->number,
len,
cols,
FALSE);
g_free (entries);
/* don't show tab popup, since proper window isn't selected yet */
}
/* Focus top window on active workspace */
void
meta_screen_focus_top_window (MetaScreen *screen,
MetaWindow *not_this_one)
{
MetaWindow *window;
if (not_this_one)
meta_topic (META_DEBUG_FOCUS,
"Focusing top window excluding %s\n", not_this_one->desc);
window = meta_stack_get_default_focus_window (screen->stack,
screen->active_workspace,
not_this_one);
/* FIXME I'm a loser on the CurrentTime front */
if (window)
{
meta_topic (META_DEBUG_FOCUS,
"Focusing top window %s\n", window->desc);
meta_window_focus (window, meta_display_get_current_time (screen->display));
/* Also raise the window if in click-to-focus */
if (meta_prefs_get_focus_mode () == META_FOCUS_MODE_CLICK)
meta_window_raise (window);
}
else
{
meta_topic (META_DEBUG_FOCUS, "No top window to focus found\n");
}
}
const MetaXineramaScreenInfo*
meta_screen_get_xinerama_for_window (MetaScreen *screen,
MetaWindow *window)
{
int i;
int best_xinerama, xinerama_score;
MetaRectangle window_rect;
if (screen->n_xinerama_infos == 1)
return &screen->xinerama_infos[0];
meta_window_get_outer_rect (window, &window_rect);
best_xinerama = 0;
xinerama_score = 0;
i = 0;
while (i < screen->n_xinerama_infos)
{
MetaRectangle dest, screen_info;
screen_info.x = screen->xinerama_infos[i].x_origin;
screen_info.y = screen->xinerama_infos[i].y_origin;
screen_info.width = screen->xinerama_infos[i].width;
screen_info.height = screen->xinerama_infos[i].height;
if (meta_rectangle_intersect (&screen_info, &window_rect, &dest))
{
if (dest.width * dest.height > xinerama_score)
{
xinerama_score = dest.width * dest.height;
best_xinerama = i;
}
}
++i;
}
return &screen->xinerama_infos[best_xinerama];
}
const MetaXineramaScreenInfo*
meta_screen_get_current_xinerama (MetaScreen *screen)
{
if (screen->n_xinerama_infos == 1)
return &screen->xinerama_infos[0];
/* Sadly, we have to do it this way. Yuck.
*/
if (screen->display->xinerama_cache_invalidated)
{
Window root_return, child_return;
int root_x_return, root_y_return;
int win_x_return, win_y_return;
unsigned int mask_return;
int i;
screen->display->xinerama_cache_invalidated = FALSE;
XQueryPointer (screen->display->xdisplay,
screen->xroot,
&root_return,
&child_return,
&root_x_return,
&root_y_return,
&win_x_return,
&win_y_return,
&mask_return);
screen->last_xinerama_index = 0;
i = 0;
while (i < screen->n_xinerama_infos)
{
if ((root_x_return >= screen->xinerama_infos[i].x_origin &&
root_x_return < (screen->xinerama_infos[i].x_origin + screen->xinerama_infos[i].width) &&
root_y_return >= screen->xinerama_infos[i].y_origin &&
root_y_return < (screen->xinerama_infos[i].y_origin + screen->xinerama_infos[i].height)))
{
screen->last_xinerama_index = i;
break;
}
++i;
}
meta_topic (META_DEBUG_XINERAMA,
"Rechecked current Xinerama, now %d\n",
screen->last_xinerama_index);
}
return &screen->xinerama_infos[screen->last_xinerama_index];
}
#define _NET_WM_ORIENTATION_HORZ 0
#define _NET_WM_ORIENTATION_VERT 1
#define _NET_WM_TOPLEFT 0
#define _NET_WM_TOPRIGHT 1
#define _NET_WM_BOTTOMRIGHT 2
#define _NET_WM_BOTTOMLEFT 3
void
meta_screen_update_workspace_layout (MetaScreen *screen)
{
gulong *list;
int n_items;
list = NULL;
n_items = 0;
if (meta_prop_get_cardinal_list (screen->display,
screen->xroot,
screen->display->atom_net_desktop_layout,
&list, &n_items))
{
if (n_items == 3 || n_items == 4)
{
int cols, rows;
switch (list[0])
{
case _NET_WM_ORIENTATION_HORZ:
screen->vertical_workspaces = FALSE;
break;
case _NET_WM_ORIENTATION_VERT:
screen->vertical_workspaces = TRUE;
break;
default:
meta_warning ("Someone set a weird orientation in _NET_DESKTOP_LAYOUT\n");
break;
}
cols = list[1];
rows = list[2];
if (rows <= 0 && cols <= 0)
{
meta_warning ("Columns = %d rows = %d in _NET_DESKTOP_LAYOUT makes no sense\n", rows, cols);
}
else
{
if (rows > 0)
screen->rows_of_workspaces = rows;
else
screen->rows_of_workspaces = -1;
if (cols > 0)
screen->columns_of_workspaces = cols;
else
screen->columns_of_workspaces = -1;
}
if (n_items == 4)
{
switch (list[3])
{
case _NET_WM_TOPLEFT:
screen->starting_corner = META_SCREEN_TOPLEFT;
break;
case _NET_WM_TOPRIGHT:
screen->starting_corner = META_SCREEN_TOPRIGHT;
break;
case _NET_WM_BOTTOMRIGHT:
screen->starting_corner = META_SCREEN_BOTTOMRIGHT;
break;
case _NET_WM_BOTTOMLEFT:
screen->starting_corner = META_SCREEN_BOTTOMLEFT;
break;
default:
meta_warning ("Someone set a weird starting corner in _NET_DESKTOP_LAYOUT\n");
break;
}
}
}
else
{
meta_warning ("Someone set _NET_DESKTOP_LAYOUT to %d integers instead of 4 "
"(3 is accepted for backwards compat)\n", n_items);
}
meta_XFree (list);
}
meta_verbose ("Workspace layout rows = %d cols = %d orientation = %d starting corner = %d\n",
screen->rows_of_workspaces,
screen->columns_of_workspaces,
screen->vertical_workspaces,
screen->starting_corner);
}
void
meta_screen_update_workspace_names (MetaScreen *screen)
{
char **names;
int n_names;
int i;
GList *tmp;
names = NULL;
n_names = 0;
if (!meta_prop_get_utf8_list (screen->display,
screen->xroot,
screen->display->atom_net_desktop_names,
&names, &n_names))
{
meta_verbose ("Failed to get workspace names from root window %d\n",
screen->number);
return;
}
i = 0;
tmp = screen->display->workspaces;
while (tmp != NULL && i < n_names)
{
MetaWorkspace *w = tmp->data;
if (w->screen == screen)
{
meta_workspace_set_name (w, names[i]);
++i;
}
tmp = tmp->next;
}
g_strfreev (names);
}
Window
meta_create_offscreen_window (Display *xdisplay,
Window parent)
{
XSetWindowAttributes attrs;
/* we want to be override redirect because sometimes we
* create a window on a screen we aren't managing.
* (but on a display we are managing at least one screen for)
*/
attrs.override_redirect = True;
return XCreateWindow (xdisplay,
parent,
-100, -100, 1, 1,
0,
CopyFromParent,
CopyFromParent,
CopyFromParent,
CWOverrideRedirect,
&attrs);
}
static int
set_work_area_hint (MetaScreen *screen)
{
int num_workspaces;
GList *tmp_list;
unsigned long *data, *tmp;
MetaRectangle area;
num_workspaces = meta_screen_get_n_workspaces (screen);
data = g_new (unsigned long, num_workspaces * 4);
tmp_list = screen->display->workspaces;
tmp = data;
while (tmp_list != NULL)
{
MetaWorkspace *workspace = tmp_list->data;
if (workspace->screen == screen)
{
meta_workspace_get_work_area (workspace, &area);
tmp[0] = area.x;
tmp[1] = area.y;
tmp[2] = area.width;
tmp[3] = area.height;
tmp += 4;
}
tmp_list = tmp_list->next;
}
meta_error_trap_push (screen->display);
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom_net_workarea,
XA_CARDINAL, 32, PropModeReplace,
(guchar*) data, num_workspaces*4);
g_free (data);
return meta_error_trap_pop (screen->display);
}
static gboolean
set_work_area_idle_func (MetaScreen *screen)
{
meta_topic (META_DEBUG_WORKAREA,
"Running work area idle function\n");
screen->work_area_idle = 0;
set_work_area_hint (screen);
return FALSE;
}
void
meta_screen_queue_workarea_recalc (MetaScreen *screen)
{
/* Recompute work area in an idle */
if (screen->work_area_idle == 0)
{
meta_topic (META_DEBUG_WORKAREA,
"Adding work area hint idle function\n");
screen->work_area_idle =
g_idle_add_full (META_PRIORITY_WORK_AREA_HINT,
(GSourceFunc) set_work_area_idle_func,
screen,
NULL);
}
}
void
meta_screen_calc_workspace_layout (MetaScreen *screen,
int num_workspaces,
int *r,
int *c)
{
int cols, rows;
/*
* 3 rows, 4 columns, horizontal layout
* and starting from top left:
* +--+--+--+--+
* | 1| 2| 3| 4|
* +--+--+--+--+
* | 5| 6| 7| 8|
* +--+--+--+--+
* | 9|10|11|12|
* +--+--+--+--+
*
* vertical layout:
* +--+--+--+--+
* | 1| 4| 7|10|
* +--+--+--+--+
* | 2| 5| 8|11|
* +--+--+--+--+
* | 3| 6| 9|12|
* +--+--+--+--+
*
*/
rows = screen->rows_of_workspaces;
cols = screen->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;
*r = rows;
*c = cols;
}
static void
meta_screen_resize_func (MetaScreen *screen,
MetaWindow *window,
void *user_data)
{
meta_window_queue_move_resize (window);
}
void
meta_screen_resize (MetaScreen *screen,
int width,
int height)
{
screen->width = width;
screen->height = height;
reload_xinerama_infos (screen);
/* Queue a resize on all the windows */
meta_screen_foreach_window (screen, meta_screen_resize_func, 0);
}
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