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2717a02a8d
mutter/src/core/screen.c
Florian Müllner 2717a02a8d screen: Ignore num-workspaces when using dynamic workspaces 
On startup, workspaces are initialized according to the num-workspaces
preference. However when using dynamic workspaces, the actual number
of workspaces in use might be greater than the preference (when
replacing the window manager), forcing windows on those workspaces
to the first workspace.
To fix, ignore the preference completely when using dynamic workspaces
and try to restore the previous number of workspaces (as read from
_NET_NUMBER_OF_DESKTOPS).

https://bugzilla.gnome.org/show_bug.cgi?id=685439
2012-10-17 22:43:26 +02:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Mutter X screen handler */
/*
* Copyright (C) 2001, 2002 Havoc Pennington
* Copyright (C) 2002, 2003 Red Hat Inc.
* Some ICCCM manager selection code derived from fvwm2,
* Copyright (C) 2001 Dominik Vogt, Matthias Clasen, and fvwm2 team
* Copyright (C) 2003 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include <config.h>
#include "screen-private.h"
#include <meta/main.h>
#include <meta/util.h>
#include <meta/errors.h>
#include "window-private.h"
#include "frame.h"
#include <meta/prefs.h>
#include "workspace-private.h"
#include "keybindings-private.h"
#include "stack.h"
#include "xprops.h"
#include <meta/compositor.h>
#include "mutter-enum-types.h"
#include <X11/extensions/Xinerama.h>
#ifdef HAVE_RANDR
#include <X11/extensions/Xrandr.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,
guint32 timestamp);
static void update_focus_mode (MetaScreen *screen);
static void set_workspace_names (MetaScreen *screen);
static void prefs_changed_callback (MetaPreference pref,
gpointer data);
static void set_desktop_geometry_hint (MetaScreen *screen);
static void set_desktop_viewport_hint (MetaScreen *screen);
#ifdef HAVE_STARTUP_NOTIFICATION
static void meta_screen_sn_event (SnMonitorEvent *event,
void *user_data);
#endif
enum
{
PROP_N_WORKSPACES = 1,
PROP_KEYBOARD_GRABBED,
};
enum
{
RESTACKED,
WORKSPACE_ADDED,
WORKSPACE_REMOVED,
WORKSPACE_SWITCHED,
WINDOW_ENTERED_MONITOR,
WINDOW_LEFT_MONITOR,
STARTUP_SEQUENCE_CHANGED,
WORKAREAS_CHANGED,
MONITORS_CHANGED,
LAST_SIGNAL
};
static guint screen_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE (MetaScreen, meta_screen, G_TYPE_OBJECT);
static void
meta_screen_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
#if 0
MetaScreen *screen = META_SCREEN (object);
#endif
switch (prop_id)
{
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_screen_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MetaScreen *screen = META_SCREEN (object);
switch (prop_id)
{
case PROP_N_WORKSPACES:
g_value_set_int (value, meta_screen_get_n_workspaces (screen));
break;
case PROP_KEYBOARD_GRABBED:
g_value_set_boolean (value, screen->all_keys_grabbed ? TRUE : FALSE);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
meta_screen_finalize (GObject *object)
{
/* Actual freeing done in meta_screen_free() for now */
}
static void
meta_screen_class_init (MetaScreenClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GParamSpec *pspec;
object_class->get_property = meta_screen_get_property;
object_class->set_property = meta_screen_set_property;
object_class->finalize = meta_screen_finalize;
screen_signals[RESTACKED] =
g_signal_new ("restacked",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (MetaScreenClass, restacked),
NULL, NULL, NULL,
G_TYPE_NONE, 0);
pspec = g_param_spec_int ("n-workspaces",
"N Workspaces",
"Number of workspaces",
1, G_MAXINT, 1,
G_PARAM_READABLE);
screen_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);
screen_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);
screen_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);
screen_signals[WINDOW_ENTERED_MONITOR] =
g_signal_new ("window-entered-monitor",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 2,
G_TYPE_INT,
META_TYPE_WINDOW);
screen_signals[WINDOW_LEFT_MONITOR] =
g_signal_new ("window-left-monitor",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 2,
G_TYPE_INT,
META_TYPE_WINDOW);
screen_signals[STARTUP_SEQUENCE_CHANGED] =
g_signal_new ("startup-sequence-changed",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1, G_TYPE_POINTER);
screen_signals[WORKAREAS_CHANGED] =
g_signal_new ("workareas-changed",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (MetaScreenClass, workareas_changed),
NULL, NULL, NULL,
G_TYPE_NONE, 0);
screen_signals[MONITORS_CHANGED] =
g_signal_new ("monitors-changed",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (MetaScreenClass, monitors_changed),
NULL, NULL, NULL,
G_TYPE_NONE, 0);
g_object_class_install_property (object_class,
PROP_N_WORKSPACES,
pspec);
pspec = g_param_spec_boolean ("keyboard-grabbed",
"Keyboard grabbed",
"Whether the keyboard is grabbed",
FALSE,
G_PARAM_READABLE);
g_object_class_install_property (object_class,
PROP_KEYBOARD_GRABBED,
pspec);
}
static void
meta_screen_init (MetaScreen *screen)
{
}
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);
return Success;
}
static void
unset_wm_check_hint (MetaScreen *screen)
{
XDeleteProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom__NET_SUPPORTING_WM_CHECK);
}
static int
set_supported_hint (MetaScreen *screen)
{
Atom atoms[] = {
#define EWMH_ATOMS_ONLY
#define item(x) screen->display->atom_##x,
#include <meta/atomnames.h>
#undef item
#undef EWMH_ATOMS_ONLY
};
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom__NET_SUPPORTED,
XA_ATOM,
32, PropModeReplace,
(guchar*) atoms, G_N_ELEMENTS(atoms));
return Success;
}
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
}
/* The list of monitors reported by the windowing system might include
* mirrored monitors with identical bounds. Since mirrored monitors
* shouldn't be treated as separate monitors for most purposes, we
* filter them out here. (We ignore the possibility of partially
* overlapping monitors because they are rare and it's hard to come
* up with any sensible interpretation.)
*/
static void
filter_mirrored_monitors (MetaScreen *screen)
{
int i, j;
/* Currently always true and simplifies things */
g_assert (screen->primary_monitor_index == 0);
for (i = 1; i < screen->n_monitor_infos; i++)
{
/* In case we've filtered previous monitors */
screen->monitor_infos[i].number = i;
for (j = 0; j < i; j++)
{
if (meta_rectangle_equal (&screen->monitor_infos[i].rect,
&screen->monitor_infos[j].rect))
{
memmove (&screen->monitor_infos[i],
&screen->monitor_infos[i + 1],
(screen->n_monitor_infos - i - 1) * sizeof (MetaMonitorInfo));
screen->n_monitor_infos--;
i--;
continue;
}
}
}
}
#ifdef HAVE_RANDR
static MetaMonitorInfo *
find_monitor_with_rect (MetaScreen *screen, int x, int y, int w, int h)
{
MetaMonitorInfo *info;
int i;
for (i = 0; i < screen->n_monitor_infos; i++)
{
info = &screen->monitor_infos[i];
if (x == info->rect.x &&
y == info->rect.y &&
w == info->rect.width &&
h == info->rect.height)
return info;
}
return NULL;
}
/* In the case of multiple outputs of a single crtc (mirroring), we consider one of the
* outputs the "main". This is the one we consider "owning" the windows, so if
* the mirroring is changed to a dual monitor setup then the windows are moved to the
* crtc that now has that main output. If one of the outputs is the primary that is
* always the main, otherwise we just use the first.
*/
static XID
find_main_output_for_crtc (MetaScreen *screen, XRRScreenResources *resources, XRRCrtcInfo *crtc)
{
XRROutputInfo *output;
RROutput primary_output;
int i;
XID res;
primary_output = XRRGetOutputPrimary (screen->display->xdisplay, screen->xroot);
res = None;
for (i = 0; i < crtc->noutput; i++)
{
output = XRRGetOutputInfo (screen->display->xdisplay, resources, crtc->outputs[i]);
if (output->connection != RR_Disconnected &&
(res == None || crtc->outputs[i] == primary_output))
res = crtc->outputs[i];
XRRFreeOutputInfo (output);
}
return res;
}
#endif
static void
reload_monitor_infos (MetaScreen *screen)
{
MetaDisplay *display;
{
GList *tmp;
tmp = screen->workspaces;
while (tmp != NULL)
{
MetaWorkspace *space = tmp->data;
meta_workspace_invalidate_work_area (space);
tmp = tmp->next;
}
}
display = screen->display;
/* Any previous screen->monitor_infos is freed by the caller */
screen->monitor_infos = NULL;
screen->n_monitor_infos = 0;
screen->last_monitor_index = 0;
/* Xinerama doesn't have a concept of primary monitor, however XRandR
* does. However, the XRandR xinerama compat code always sorts the
* primary output first, so we rely on that here. We could use the
* native XRandR calls instead of xinerama, but that would be
* slightly problematic for _NET_WM_FULLSCREEN_MONITORS support, as
* that is defined in terms of xinerama monitor indexes.
* So, since we don't need anything in xrandr except the primary
* we can keep using xinerama and use the first monitor as the
* primary.
*/
screen->primary_monitor_index = 0;
screen->display->monitor_cache_invalidated = TRUE;
if (g_getenv ("MUTTER_DEBUG_XINERAMA"))
{
meta_topic (META_DEBUG_XINERAMA,
"Pretending a single monitor has two Xinerama screens\n");
screen->monitor_infos = g_new0 (MetaMonitorInfo, 2);
screen->n_monitor_infos = 2;
screen->monitor_infos[0].number = 0;
screen->monitor_infos[0].rect = screen->rect;
screen->monitor_infos[0].rect.width = screen->rect.width / 2;
screen->monitor_infos[1].number = 1;
screen->monitor_infos[1].rect = screen->rect;
screen->monitor_infos[1].rect.x = screen->rect.width / 2;
screen->monitor_infos[1].rect.width = screen->rect.width / 2;
}
if (screen->n_monitor_infos == 0 &&
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->monitor_infos = g_new0 (MetaMonitorInfo, n_infos);
screen->n_monitor_infos = n_infos;
i = 0;
while (i < n_infos)
{
screen->monitor_infos[i].number = infos[i].screen_number;
screen->monitor_infos[i].rect.x = infos[i].x_org;
screen->monitor_infos[i].rect.y = infos[i].y_org;
screen->monitor_infos[i].rect.width = infos[i].width;
screen->monitor_infos[i].rect.height = infos[i].height;
meta_topic (META_DEBUG_XINERAMA,
"Monitor %d is %d,%d %d x %d\n",
screen->monitor_infos[i].number,
screen->monitor_infos[i].rect.x,
screen->monitor_infos[i].rect.y,
screen->monitor_infos[i].rect.width,
screen->monitor_infos[i].rect.height);
++i;
}
}
meta_XFree (infos);
#ifdef HAVE_RANDR
{
XRRScreenResources *resources;
resources = XRRGetScreenResourcesCurrent (display->xdisplay, screen->xroot);
if (resources)
{
for (i = 0; i < resources->ncrtc; i++)
{
XRRCrtcInfo *crtc;
MetaMonitorInfo *info;
crtc = XRRGetCrtcInfo (display->xdisplay, resources, resources->crtcs[i]);
info = find_monitor_with_rect (screen, crtc->x, crtc->y, (int)crtc->width, (int)crtc->height);
if (info)
info->output = find_main_output_for_crtc (screen, resources, crtc);
XRRFreeCrtcInfo (crtc);
}
XRRFreeScreenResources (resources);
}
}
#endif
}
else if (screen->n_monitor_infos > 0)
{
meta_topic (META_DEBUG_XINERAMA,
"No Xinerama extension or Xinerama inactive on display %s\n",
display->name);
}
/* If no Xinerama, fill in the single screen info so
* we can use the field unconditionally
*/
if (screen->n_monitor_infos == 0)
{
meta_topic (META_DEBUG_XINERAMA,
"No Xinerama screens, using default screen info\n");
screen->monitor_infos = g_new0 (MetaMonitorInfo, 1);
screen->n_monitor_infos = 1;
screen->monitor_infos[0].number = 0;
screen->monitor_infos[0].rect = screen->rect;
}
filter_mirrored_monitors (screen);
screen->monitor_infos[screen->primary_monitor_index].is_primary = TRUE;
g_assert (screen->n_monitor_infos > 0);
g_assert (screen->monitor_infos != NULL);
}
/* The guard window allows us to leave minimized windows mapped so
* that compositor code may provide live previews of them.
* Instead of being unmapped/withdrawn, they get pushed underneath
* the guard window. */
static Window
create_guard_window (Display *xdisplay, MetaScreen *screen)
{
XSetWindowAttributes attributes;
Window guard_window;
gulong create_serial;
attributes.event_mask = NoEventMask;
attributes.override_redirect = True;
attributes.background_pixel = BlackPixel (xdisplay, screen->number);
/* We have to call record_add() after we have the new window ID,
* so save the serial for the CreateWindow request until then */
create_serial = XNextRequest(xdisplay);
guard_window =
XCreateWindow (xdisplay,
screen->xroot,
0, /* x */
0, /* y */
screen->rect.width,
screen->rect.height,
0, /* border width */
CopyFromParent, /* depth */
CopyFromParent, /* class */
CopyFromParent, /* visual */
CWEventMask|CWOverrideRedirect|CWBackPixel,
&attributes);
meta_stack_tracker_record_add (screen->stack_tracker,
guard_window,
create_serial);
meta_stack_tracker_record_lower (screen->stack_tracker,
guard_window,
XNextRequest (xdisplay));
XLowerWindow (xdisplay, guard_window);
XMapWindow (xdisplay, guard_window);
return guard_window;
}
MetaScreen*
meta_screen_new (MetaDisplay *display,
int number,
guint32 timestamp)
{
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];
guint32 manager_timestamp;
gulong current_workspace;
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_with_return (display);
attrs.event_mask = StructureNotifyMask;
XChangeWindowAttributes (xdisplay,
current_wm_sn_owner, CWEventMask, &attrs);
if (meta_error_trap_pop_with_return (display) != Success)
current_wm_sn_owner = None; /* don't wait for it to die later on */
}
/* We need SelectionClear and SelectionRequest events on the new_wm_sn_owner,
* but those cannot be masked, so we only need NoEventMask.
*/
new_wm_sn_owner = meta_create_offscreen_window (xdisplay, xroot, NoEventMask);
manager_timestamp = timestamp;
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_with_return (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 |
KeyPressMask | KeyReleaseMask |
FocusChangeMask | StructureNotifyMask |
ExposureMask | attr.your_event_mask);
if (meta_error_trap_pop_with_return (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_object_new (META_TYPE_SCREEN, NULL);
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->rect.x = screen->rect.y = 0;
screen->rect.width = WidthOfScreen (screen->xscreen);
screen->rect.height = HeightOfScreen (screen->xscreen);
screen->current_cursor = -1; /* invalid/unset */
screen->default_xvisual = DefaultVisualOfScreen (screen->xscreen);
screen->default_depth = DefaultDepthOfScreen (screen->xscreen);
screen->flash_window = None;
screen->wm_sn_selection_window = new_wm_sn_owner;
screen->wm_sn_atom = wm_sn_atom;
screen->wm_sn_timestamp = manager_timestamp;
screen->wm_cm_selection_window = meta_create_offscreen_window (xdisplay,
xroot,
NoEventMask);
screen->work_area_later = 0;
screen->active_workspace = NULL;
screen->workspaces = NULL;
screen->rows_of_workspaces = 1;
screen->columns_of_workspaces = -1;
screen->vertical_workspaces = FALSE;
screen->starting_corner = META_SCREEN_TOPLEFT;
screen->compositor_data = NULL;
screen->guard_window = None;
screen->monitor_infos = NULL;
screen->n_monitor_infos = 0;
screen->last_monitor_index = 0;
reload_monitor_infos (screen);
meta_screen_set_cursor (screen, META_CURSOR_DEFAULT);
/* Handle creating a no_focus_window for this screen */
screen->no_focus_window =
meta_create_offscreen_window (display->xdisplay,
screen->xroot,
FocusChangeMask|KeyPressMask|KeyReleaseMask);
XMapWindow (display->xdisplay, screen->no_focus_window);
/* Done with no_focus_window stuff */
set_wm_icon_size_hint (screen);
set_supported_hint (screen);
set_wm_check_hint (screen);
set_desktop_viewport_hint (screen);
set_desktop_geometry_hint (screen);
meta_screen_update_workspace_layout (screen);
/* Get current workspace */
current_workspace = 0;
if (meta_prop_get_cardinal (screen->display,
screen->xroot,
screen->display->atom__NET_CURRENT_DESKTOP,
&current_workspace))
meta_verbose ("Read existing _NET_CURRENT_DESKTOP = %d\n",
(int) current_workspace);
else
meta_verbose ("No _NET_CURRENT_DESKTOP present\n");
/* Screens must have at least one workspace at all times,
* so create that required workspace.
*/
meta_workspace_activate (meta_workspace_new (screen), timestamp);
update_num_workspaces (screen, timestamp);
set_workspace_names (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->ws_popup = NULL;
screen->tile_preview = NULL;
screen->tile_preview_timeout_id = 0;
screen->stack = meta_stack_new (screen);
screen->stack_tracker = meta_stack_tracker_new (screen);
meta_prefs_add_listener (prefs_changed_callback, screen);
#ifdef HAVE_STARTUP_NOTIFICATION
screen->sn_context =
sn_monitor_context_new (screen->display->sn_display,
screen->number,
meta_screen_sn_event,
screen,
NULL);
screen->startup_sequences = NULL;
screen->startup_sequence_timeout = 0;
#endif
/* Switch to the _NET_CURRENT_DESKTOP workspace */
{
MetaWorkspace *space;
space = meta_screen_get_workspace_by_index (screen,
current_workspace);
if (space != NULL)
meta_workspace_activate (space, timestamp);
}
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,
guint32 timestamp)
{
MetaDisplay *display;
display = screen->display;
screen->closing += 1;
meta_display_grab (display);
if (screen->display->compositor)
{
meta_compositor_unmanage_screen (screen->display->compositor,
screen);
}
meta_display_unmanage_windows_for_screen (display, screen, timestamp);
meta_prefs_remove_listener (prefs_changed_callback, screen);
meta_screen_ungrab_keys (screen);
#ifdef HAVE_STARTUP_NOTIFICATION
g_slist_foreach (screen->startup_sequences,
(GFunc) sn_startup_sequence_unref, NULL);
g_slist_free (screen->startup_sequences);
screen->startup_sequences = NULL;
if (screen->startup_sequence_timeout != 0)
{
g_source_remove (screen->startup_sequence_timeout);
screen->startup_sequence_timeout = 0;
}
if (screen->sn_context)
{
sn_monitor_context_unref (screen->sn_context);
screen->sn_context = NULL;
}
#endif
meta_ui_free (screen->ui);
meta_stack_free (screen->stack);
meta_stack_tracker_free (screen->stack_tracker);
meta_error_trap_push_with_return (screen->display);
XSelectInput (screen->display->xdisplay, screen->xroot, 0);
if (meta_error_trap_pop_with_return (screen->display) != Success)
meta_warning (_("Could not release screen %d on display \"%s\"\n"),
screen->number, screen->display->name);
unset_wm_check_hint (screen);
XDestroyWindow (screen->display->xdisplay,
screen->wm_sn_selection_window);
if (screen->work_area_later != 0)
g_source_remove (screen->work_area_later);
if (screen->monitor_infos)
g_free (screen->monitor_infos);
if (screen->tile_preview_timeout_id)
g_source_remove (screen->tile_preview_timeout_id);
if (screen->tile_preview)
meta_tile_preview_free (screen->tile_preview);
g_free (screen->screen_name);
g_object_unref (screen);
XFlush (display->xdisplay);
meta_display_ungrab (display);
}
typedef struct
{
Window xwindow;
XWindowAttributes attrs;
} WindowInfo;
static GList *
list_windows (MetaScreen *screen)
{
Window ignored1, ignored2;
Window *children;
guint n_children, i;
GList *result;
XQueryTree (screen->display->xdisplay,
screen->xroot,
&ignored1, &ignored2, &children, &n_children);
result = NULL;
for (i = 0; i < n_children; ++i)
{
WindowInfo *info = g_new0 (WindowInfo, 1);
meta_error_trap_push_with_return (screen->display);
XGetWindowAttributes (screen->display->xdisplay,
children[i], &info->attrs);
if (meta_error_trap_pop_with_return (screen->display))
{
meta_verbose ("Failed to get attributes for window 0x%lx\n",
children[i]);
g_free (info);
}
else
{
info->xwindow = children[i];
}
result = g_list_prepend (result, info);
}
if (children)
XFree (children);
return g_list_reverse (result);
}
void
meta_screen_manage_all_windows (MetaScreen *screen)
{
GList *windows;
GList *list;
meta_display_grab (screen->display);
if (screen->guard_window == None)
screen->guard_window = create_guard_window (screen->display->xdisplay,
screen);
windows = list_windows (screen);
meta_stack_freeze (screen->stack);
for (list = windows; list != NULL; list = list->next)
{
WindowInfo *info = list->data;
meta_window_new_with_attrs (screen->display, info->xwindow, TRUE,
META_COMP_EFFECT_NONE,
&info->attrs);
}
meta_stack_thaw (screen->stack);
g_list_foreach (windows, (GFunc)g_free, NULL);
g_list_free (windows);
meta_display_ungrab (screen->display);
}
void
meta_screen_composite_all_windows (MetaScreen *screen)
{
MetaDisplay *display;
GSList *windows, *tmp;
display = screen->display;
if (!display->compositor)
return;
windows = meta_display_list_windows (display,
META_LIST_INCLUDE_OVERRIDE_REDIRECT);
for (tmp = windows; tmp != NULL; tmp = tmp->next)
{
MetaWindow *window = tmp->data;
meta_compositor_add_window (display->compositor, window);
if (window->visible_to_compositor)
meta_compositor_show_window (display->compositor, window,
META_COMP_EFFECT_NONE);
}
g_slist_free (windows);
/* initialize the compositor's view of the stacking order */
meta_stack_tracker_sync_stack (screen->stack_tracker);
}
/**
* meta_screen_for_x_screen:
* @xscreen: an X screen structure.
*
* Gets the #MetaScreen corresponding to an X screen structure.
*
* Return value: (transfer none): the #MetaScreen for the X screen
* %NULL if Metacity is not managing the screen.
*/
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 ||
pref == META_PREF_DYNAMIC_WORKSPACES) &&
!meta_prefs_get_dynamic_workspaces ())
{
/* GSettings doesn't provide timestamps, but luckily update_num_workspaces
* often doesn't need it...
*/
guint32 timestamp =
meta_display_get_current_time_roundtrip (screen->display);
update_num_workspaces (screen, timestamp);
}
else if (pref == META_PREF_FOCUS_MODE)
{
update_focus_mode (screen);
}
else if (pref == META_PREF_WORKSPACE_NAMES)
{
set_workspace_names (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);
}
/**
* meta_screen_foreach_window:
* @screen: a #MetaScreen
* @func: function to call for each window
* @data: user data to pass to @func
*
* Calls the specified function for each window on the screen,
* ignoring override-redirect windows.
*/
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 && !window->override_redirect)
(* func) (screen, window, data);
}
tmp = tmp->next;
}
g_slist_free (winlist);
}
int
meta_screen_get_n_workspaces (MetaScreen *screen)
{
return g_list_length (screen->workspaces);
}
/**
* meta_screen_get_workspace_by_index:
* @screen: a #MetaScreen
* @index: index of one of the screen's workspaces
*
* Gets the workspace object for one of a screen'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): the workspace object with specified index, or %NULL
* if the index is out of range.
*/
MetaWorkspace*
meta_screen_get_workspace_by_index (MetaScreen *screen,
int idx)
{
GList *tmp;
int i;
/* should be robust, idx is maybe from an app */
if (idx < 0)
return NULL;
i = 0;
tmp = screen->workspaces;
while (tmp != NULL)
{
MetaWorkspace *w = tmp->data;
if (i == idx)
return w;
++i;
tmp = tmp->next;
}
return NULL;
}
static void
set_number_of_spaces_hint (MetaScreen *screen,
int n_spaces)
{
unsigned long data[1];
if (screen->closing > 0)
return;
data[0] = n_spaces;
meta_verbose ("Setting _NET_NUMBER_OF_DESKTOPS to %lu\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);
meta_error_trap_pop (screen->display);
}
static void
set_desktop_geometry_hint (MetaScreen *screen)
{
unsigned long data[2];
if (screen->closing > 0)
return;
data[0] = screen->rect.width;
data[1] = screen->rect.height;
meta_verbose ("Setting _NET_DESKTOP_GEOMETRY to %lu, %lu\n", data[0], data[1]);
meta_error_trap_push (screen->display);
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom__NET_DESKTOP_GEOMETRY,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 2);
meta_error_trap_pop (screen->display);
}
static void
set_desktop_viewport_hint (MetaScreen *screen)
{
unsigned long data[2];
if (screen->closing > 0)
return;
/*
* Mutter does not implement viewports, so this is a fixed 0,0
*/
data[0] = 0;
data[1] = 0;
meta_verbose ("Setting _NET_DESKTOP_VIEWPORT to 0, 0\n");
meta_error_trap_push (screen->display);
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom__NET_DESKTOP_VIEWPORT,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 2);
meta_error_trap_pop (screen->display);
}
void
meta_screen_remove_workspace (MetaScreen *screen, MetaWorkspace *workspace,
guint32 timestamp)
{
GList *l;
MetaWorkspace *neighbour = NULL;
GList *next = NULL;
int index;
gboolean active_index_changed;
int new_num;
l = screen->workspaces;
while (l)
{
MetaWorkspace *w = l->data;
if (w == workspace)
{
if (l->next)
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;
}
break;
}
l = l->next;
}
if (!neighbour)
return;
meta_workspace_relocate_windows (workspace, neighbour);
if (workspace == screen->active_workspace)
meta_workspace_activate (neighbour, timestamp);
/* To emit the signal after removing the workspace */
index = meta_workspace_index (workspace);
active_index_changed = index < meta_screen_get_active_workspace_index (screen);
/* This also removes the workspace from the screens list */
meta_workspace_remove (workspace);
new_num = g_list_length (screen->workspaces);
set_number_of_spaces_hint (screen, new_num);
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)
meta_screen_set_active_workspace_hint (screen);
l = next;
while (l)
{
MetaWorkspace *w = l->data;
meta_workspace_update_window_hints (w);
l = l->next;
}
meta_screen_queue_workarea_recalc (screen);
g_signal_emit (screen, screen_signals[WORKSPACE_REMOVED], 0, index);
g_object_notify (G_OBJECT (screen), "n-workspaces");
}
/**
* meta_screen_append_new_workspace:
* @screen: a #MetaScreen
* @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 screen and (optionally) switch to that
* screen.
*
* Return value: (transfer none): the newly appended workspace.
*/
MetaWorkspace *
meta_screen_append_new_workspace (MetaScreen *screen, gboolean activate,
guint32 timestamp)
{
MetaWorkspace *w;
int new_num;
/* This also adds the workspace to the screen list */
w = meta_workspace_new (screen);
if (!w)
return NULL;
if (activate)
meta_workspace_activate (w, timestamp);
new_num = g_list_length (screen->workspaces);
set_number_of_spaces_hint (screen, new_num);
if (!meta_prefs_get_dynamic_workspaces ())
meta_prefs_set_num_workspaces (new_num);
meta_screen_queue_workarea_recalc (screen);
g_signal_emit (screen, screen_signals[WORKSPACE_ADDED],
0, meta_workspace_index (w));
g_object_notify (G_OBJECT (screen), "n-workspaces");
return w;
}
static void
update_num_workspaces (MetaScreen *screen,
guint32 timestamp)
{
int new_num, old_num;
GList *tmp;
int i;
GList *extras;
MetaWorkspace *last_remaining;
gboolean need_change_space;
if (meta_prefs_get_dynamic_workspaces ())
{
int n_items;
gulong *list;
n_items = 0;
list = NULL;
if (meta_prop_get_cardinal_list (screen->display, screen->xroot,
screen->display->atom__NET_NUMBER_OF_DESKTOPS,
&list, &n_items))
{
new_num = list[0];
meta_XFree (list);
}
else
{
new_num = 1;
}
}
else
{
new_num = meta_prefs_get_num_workspaces ();
}
g_assert (new_num > 0);
if (g_list_length (screen->workspaces) == (guint) new_num)
return;
last_remaining = NULL;
extras = NULL;
i = 0;
tmp = screen->workspaces;
while (tmp != NULL)
{
MetaWorkspace *w = tmp->data;
if (i >= new_num)
extras = g_list_prepend (extras, w);
else
last_remaining = w;
++i;
tmp = tmp->next;
}
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 ;-)
*/
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, timestamp);
/* Should now be safe to free the workspaces */
tmp = extras;
while (tmp != NULL)
{
MetaWorkspace *w = tmp->data;
g_assert (w->windows == NULL);
meta_workspace_remove (w);
tmp = tmp->next;
}
g_list_free (extras);
for (i = old_num; i < new_num; i++)
meta_workspace_new (screen);
set_number_of_spaces_hint (screen, new_num);
meta_screen_queue_workarea_recalc (screen);
for (i = old_num; i < new_num; i++)
g_signal_emit (screen, screen_signals[WORKSPACE_ADDED], 0, i);
g_object_notify (G_OBJECT (screen), "n-workspaces");
}
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);
XFlush (screen->display->xdisplay);
XFreeCursor (screen->display->xdisplay, xcursor);
}
void
meta_screen_update_cursor (MetaScreen *screen)
{
Cursor xcursor;
xcursor = meta_display_create_x_cursor (screen->display,
screen->current_cursor);
XDefineCursor (screen->display->xdisplay, screen->xroot, xcursor);
XFlush (screen->display->xdisplay);
XFreeCursor (screen->display->xdisplay, xcursor);
}
void
meta_screen_tab_popup_create (MetaScreen *screen,
MetaTabList list_type,
MetaTabShowType show_type,
MetaWindow *initial_selection)
{
MetaTabEntry *entries;
GList *tab_list;
GList *tmp;
int len;
int i;
if (screen->tab_popup)
return;
tab_list = meta_display_get_tab_list (screen->display,
list_type,
screen,
screen->active_workspace);
len = g_list_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;
entries[i].title = window->title;
entries[i].icon = g_object_ref (window->icon);
entries[i].blank = FALSE;
entries[i].hidden = !meta_window_showing_on_its_workspace (window);
entries[i].demands_attention = window->wm_state_demands_attention;
if (show_type == META_TAB_SHOW_INSTANTLY ||
!entries[i].hidden ||
!meta_window_get_icon_geometry (window, &r))
meta_window_get_outer_rect (window, &r);
entries[i].rect = r;
/* 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.
*/
#define OUTLINE_WIDTH 5
/* Top side */
if (!entries[i].hidden &&
window->frame && window->frame->bottom_height > 0 &&
window->frame->child_y >= window->frame->bottom_height)
entries[i].inner_rect.y = window->frame->bottom_height;
else
entries[i].inner_rect.y = OUTLINE_WIDTH;
/* Bottom side */
if (!entries[i].hidden &&
window->frame && window->frame->bottom_height != 0)
entries[i].inner_rect.height = r.height
- entries[i].inner_rect.y - window->frame->bottom_height;
else
entries[i].inner_rect.height = r.height
- entries[i].inner_rect.y - OUTLINE_WIDTH;
/* Left side */
if (!entries[i].hidden && window->frame && window->frame->child_x != 0)
entries[i].inner_rect.x = window->frame->child_x;
else
entries[i].inner_rect.x = OUTLINE_WIDTH;
/* Right side */
if (!entries[i].hidden &&
window->frame && window->frame->right_width != 0)
entries[i].inner_rect.width = r.width
- entries[i].inner_rect.x - window->frame->right_width;
else
entries[i].inner_rect.width = r.width
- entries[i].inner_rect.x - OUTLINE_WIDTH;
++i;
tmp = tmp->next;
}
if (!meta_prefs_get_no_tab_popup ())
screen->tab_popup = meta_ui_tab_popup_new (entries,
screen->number,
len,
5, /* FIXME */
TRUE);
for (i = 0; i < len; i++)
g_object_unref (entries[i].icon);
g_free (entries);
g_list_free (tab_list);
meta_ui_tab_popup_select (screen->tab_popup,
(MetaTabEntryKey) initial_selection);
if (show_type != META_TAB_SHOW_INSTANTLY)
meta_ui_tab_popup_set_showing (screen->tab_popup, TRUE);
}
void
meta_screen_tab_popup_forward (MetaScreen *screen)
{
g_return_if_fail (screen->tab_popup != NULL);
meta_ui_tab_popup_forward (screen->tab_popup);
}
void
meta_screen_tab_popup_backward (MetaScreen *screen)
{
g_return_if_fail (screen->tab_popup != NULL);
meta_ui_tab_popup_backward (screen->tab_popup);
}
MetaWindow *
meta_screen_tab_popup_get_selected (MetaScreen *screen)
{
g_return_val_if_fail (screen->tab_popup != NULL, NULL);
return (MetaWindow *) meta_ui_tab_popup_get_selected (screen->tab_popup);
}
void
meta_screen_tab_popup_destroy (MetaScreen *screen)
{
if (screen->tab_popup)
{
meta_ui_tab_popup_free (screen->tab_popup);
screen->tab_popup = NULL;
}
}
void
meta_screen_workspace_popup_create (MetaScreen *screen,
MetaWorkspace *initial_selection)
{
MetaTabEntry *entries;
int len;
int i;
MetaWorkspaceLayout layout;
int n_workspaces;
int current_workspace;
if (screen->ws_popup || meta_prefs_get_no_tab_popup ())
return;
current_workspace = meta_workspace_index (screen->active_workspace);
n_workspaces = meta_screen_get_n_workspaces (screen);
meta_screen_calc_workspace_layout (screen, n_workspaces,
current_workspace, &layout);
len = layout.grid_area;
entries = g_new (MetaTabEntry, len + 1);
entries[len].key = NULL;
entries[len].title = NULL;
entries[len].icon = NULL;
i = 0;
while (i < len)
{
if (layout.grid[i] >= 0)
{
MetaWorkspace *workspace;
workspace = meta_screen_get_workspace_by_index (screen,
layout.grid[i]);
entries[i].key = (MetaTabEntryKey) workspace;
entries[i].title = meta_workspace_get_name (workspace);
entries[i].icon = NULL;
entries[i].blank = FALSE;
g_assert (entries[i].title != NULL);
}
else
{
entries[i].key = NULL;
entries[i].title = NULL;
entries[i].icon = NULL;
entries[i].blank = TRUE;
}
entries[i].hidden = FALSE;
entries[i].demands_attention = FALSE;
++i;
}
screen->ws_popup = meta_ui_tab_popup_new (entries,
screen->number,
len,
layout.cols,
FALSE);
g_free (entries);
meta_screen_free_workspace_layout (&layout);
meta_ui_tab_popup_select (screen->ws_popup,
(MetaTabEntryKey) initial_selection);
meta_ui_tab_popup_set_showing (screen->ws_popup, TRUE);
}
void
meta_screen_workspace_popup_select (MetaScreen *screen,
MetaWorkspace *workspace)
{
g_return_if_fail (screen->ws_popup != NULL);
meta_ui_tab_popup_select (screen->ws_popup,
(MetaTabEntryKey) workspace);
}
MetaWorkspace *
meta_screen_workspace_popup_get_selected (MetaScreen *screen)
{
g_return_val_if_fail (screen->ws_popup != NULL, NULL);
return (MetaWorkspace *) meta_ui_tab_popup_get_selected (screen->ws_popup);
}
void
meta_screen_workspace_popup_destroy (MetaScreen *screen)
{
if (screen->ws_popup)
{
meta_ui_tab_popup_free (screen->ws_popup);
screen->ws_popup = NULL;
}
}
static gboolean
meta_screen_tile_preview_update_timeout (gpointer data)
{
MetaScreen *screen = data;
MetaWindow *window = screen->display->grab_window;
gboolean needs_preview = FALSE;
screen->tile_preview_timeout_id = 0;
if (!screen->tile_preview)
{
Window xwindow;
gulong create_serial;
screen->tile_preview = meta_tile_preview_new (screen->number);
xwindow = meta_tile_preview_get_xwindow (screen->tile_preview,
&create_serial);
meta_stack_tracker_record_add (screen->stack_tracker,
xwindow,
create_serial);
}
if (window)
{
switch (window->tile_mode)
{
case META_TILE_LEFT:
case META_TILE_RIGHT:
if (!META_WINDOW_TILED_SIDE_BY_SIDE (window))
needs_preview = TRUE;
break;
case META_TILE_MAXIMIZED:
if (!META_WINDOW_MAXIMIZED (window))
needs_preview = TRUE;
break;
default:
needs_preview = FALSE;
break;
}
}
if (needs_preview)
{
MetaRectangle tile_rect;
meta_window_get_current_tile_area (window, &tile_rect);
meta_tile_preview_show (screen->tile_preview, &tile_rect);
}
else
meta_tile_preview_hide (screen->tile_preview);
return FALSE;
}
#define TILE_PREVIEW_TIMEOUT_MS 200
void
meta_screen_tile_preview_update (MetaScreen *screen,
gboolean delay)
{
if (delay)
{
if (screen->tile_preview_timeout_id > 0)
return;
screen->tile_preview_timeout_id =
g_timeout_add (TILE_PREVIEW_TIMEOUT_MS,
meta_screen_tile_preview_update_timeout,
screen);
}
else
{
if (screen->tile_preview_timeout_id > 0)
g_source_remove (screen->tile_preview_timeout_id);
meta_screen_tile_preview_update_timeout ((gpointer)screen);
}
}
void
meta_screen_tile_preview_hide (MetaScreen *screen)
{
if (screen->tile_preview_timeout_id > 0)
g_source_remove (screen->tile_preview_timeout_id);
if (screen->tile_preview)
meta_tile_preview_hide (screen->tile_preview);
}
MetaWindow*
meta_screen_get_mouse_window (MetaScreen *screen,
MetaWindow *not_this_one)
{
MetaWindow *window;
Window root_return, child_return;
int root_x_return, root_y_return;
int win_x_return, win_y_return;
unsigned int mask_return;
if (not_this_one)
meta_topic (META_DEBUG_FOCUS,
"Focusing mouse window excluding %s\n", not_this_one->desc);
meta_error_trap_push (screen->display);
XQueryPointer (screen->display->xdisplay,
screen->xroot,
&root_return,
&child_return,
&root_x_return,
&root_y_return,
&win_x_return,
&win_y_return,
&mask_return);
meta_error_trap_pop (screen->display);
window = meta_stack_get_default_focus_window_at_point (screen->stack,
screen->active_workspace,
not_this_one,
root_x_return,
root_y_return);
return window;
}
const MetaMonitorInfo*
meta_screen_get_monitor_for_rect (MetaScreen *screen,
MetaRectangle *rect)
{
int i;
int best_monitor, monitor_score;
if (screen->n_monitor_infos == 1)
return &screen->monitor_infos[0];
best_monitor = 0;
monitor_score = 0;
for (i = 0; i < screen->n_monitor_infos; i++)
{
MetaRectangle dest;
if (meta_rectangle_intersect (&screen->monitor_infos[i].rect,
rect,
&dest))
{
int cur = meta_rectangle_area (&dest);
if (cur > monitor_score)
{
monitor_score = cur;
best_monitor = i;
}
}
}
return &screen->monitor_infos[best_monitor];
}
const MetaMonitorInfo*
meta_screen_get_monitor_for_window (MetaScreen *screen,
MetaWindow *window)
{
MetaRectangle window_rect;
meta_window_get_outer_rect (window, &window_rect);
return meta_screen_get_monitor_for_rect (screen, &window_rect);
}
const MetaMonitorInfo*
meta_screen_get_monitor_neighbor (MetaScreen *screen,
int which_monitor,
MetaScreenDirection direction)
{
MetaMonitorInfo* input = screen->monitor_infos + which_monitor;
MetaMonitorInfo* current;
int i;
for (i = 0; i < screen->n_monitor_infos; i++)
{
current = screen->monitor_infos + i;
if ((direction == META_SCREEN_RIGHT &&
current->rect.x == input->rect.x + input->rect.width &&
meta_rectangle_vert_overlap(&current->rect, &input->rect)) ||
(direction == META_SCREEN_LEFT &&
input->rect.x == current->rect.x + current->rect.width &&
meta_rectangle_vert_overlap(&current->rect, &input->rect)) ||
(direction == META_SCREEN_UP &&
input->rect.y == current->rect.y + current->rect.height &&
meta_rectangle_horiz_overlap(&current->rect, &input->rect)) ||
(direction == META_SCREEN_DOWN &&
current->rect.y == input->rect.y + input->rect.height &&
meta_rectangle_horiz_overlap(&current->rect, &input->rect)))
{
return current;
}
}
return NULL;
}
void
meta_screen_get_natural_monitor_list (MetaScreen *screen,
int** monitors_list,
int* n_monitors)
{
const MetaMonitorInfo* current;
const MetaMonitorInfo* tmp;
GQueue* monitor_queue;
int* visited;
int cur = 0;
int i;
*n_monitors = screen->n_monitor_infos;
*monitors_list = g_new (int, screen->n_monitor_infos);
/* we calculate a natural ordering by which to choose monitors for
* window placement. We start at the current monitor, and perform
* a breadth-first search of the monitors starting from that
* monitor. We choose preferentially left, then right, then down,
* then up. The visitation order produced by this traversal is the
* natural monitor ordering.
*/
visited = g_new (int, screen->n_monitor_infos);
for (i = 0; i < screen->n_monitor_infos; i++)
{
visited[i] = FALSE;
}
current = meta_screen_get_current_monitor_info (screen);
monitor_queue = g_queue_new ();
g_queue_push_tail (monitor_queue, (gpointer) current);
visited[current->number] = TRUE;
while (!g_queue_is_empty (monitor_queue))
{
current = (const MetaMonitorInfo*)
g_queue_pop_head (monitor_queue);
(*monitors_list)[cur++] = current->number;
/* enqueue each of the directions */
tmp = meta_screen_get_monitor_neighbor (screen,
current->number,
META_SCREEN_LEFT);
if (tmp && !visited[tmp->number])
{
g_queue_push_tail (monitor_queue,
(MetaMonitorInfo*) tmp);
visited[tmp->number] = TRUE;
}
tmp = meta_screen_get_monitor_neighbor (screen,
current->number,
META_SCREEN_RIGHT);
if (tmp && !visited[tmp->number])
{
g_queue_push_tail (monitor_queue,
(MetaMonitorInfo*) tmp);
visited[tmp->number] = TRUE;
}
tmp = meta_screen_get_monitor_neighbor (screen,
current->number,
META_SCREEN_UP);
if (tmp && !visited[tmp->number])
{
g_queue_push_tail (monitor_queue,
(MetaMonitorInfo*) tmp);
visited[tmp->number] = TRUE;
}
tmp = meta_screen_get_monitor_neighbor (screen,
current->number,
META_SCREEN_DOWN);
if (tmp && !visited[tmp->number])
{
g_queue_push_tail (monitor_queue,
(MetaMonitorInfo*) tmp);
visited[tmp->number] = TRUE;
}
}
/* in case we somehow missed some set of monitors, go through the
* visited list and add in any monitors that were missed
*/
for (i = 0; i < screen->n_monitor_infos; i++)
{
if (visited[i] == FALSE)
{
(*monitors_list)[cur++] = i;
}
}
g_free (visited);
g_queue_free (monitor_queue);
}
const MetaMonitorInfo*
meta_screen_get_current_monitor_info (MetaScreen *screen)
{
int monitor_index;
monitor_index = meta_screen_get_current_monitor (screen);
return &screen->monitor_infos[monitor_index];
}
/**
* meta_screen_get_current_monitor:
* @screen: a #MetaScreen
*
* Gets the index of the monitor that currently has the mouse pointer.
*
* Return value: a monitor index
*/
int
meta_screen_get_current_monitor (MetaScreen *screen)
{
if (screen->n_monitor_infos == 1)
return 0;
/* Sadly, we have to do it this way. Yuck.
*/
if (screen->display->monitor_cache_invalidated)
{
Window root_return, child_return;
int win_x_return, win_y_return;
unsigned int mask_return;
int i;
MetaRectangle pointer_position;
screen->display->monitor_cache_invalidated = FALSE;
pointer_position.width = pointer_position.height = 1;
XQueryPointer (screen->display->xdisplay,
screen->xroot,
&root_return,
&child_return,
&pointer_position.x,
&pointer_position.y,
&win_x_return,
&win_y_return,
&mask_return);
screen->last_monitor_index = 0;
for (i = 0; i < screen->n_monitor_infos; i++)
{
if (meta_rectangle_contains_rect (&screen->monitor_infos[i].rect,
&pointer_position))
{
screen->last_monitor_index = i;
break;
}
}
meta_topic (META_DEBUG_XINERAMA,
"Rechecked current monitor, now %d\n",
screen->last_monitor_index);
}
return screen->last_monitor_index;
}
/**
* meta_screen_get_n_monitors:
* @screen: a #MetaScreen
*
* Gets the number of monitors that are joined together to form @screen.
*
* Return value: the number of monitors
*/
int
meta_screen_get_n_monitors (MetaScreen *screen)
{
g_return_val_if_fail (META_IS_SCREEN (screen), 0);
return screen->n_monitor_infos;
}
/**
* meta_screen_get_primary_monitor:
* @screen: a #MetaScreen
*
* Gets the index of the primary monitor on this @screen.
*
* Return value: a monitor index
*/
int
meta_screen_get_primary_monitor (MetaScreen *screen)
{
g_return_val_if_fail (META_IS_SCREEN (screen), 0);
return screen->primary_monitor_index;
}
/**
* meta_screen_get_monitor_geometry:
* @screen: a #MetaScreen
* @monitor: the monitor number
* @geometry: (out): location to store the monitor geometry
*
* Stores the location and size of the indicated monitor in @geometry.
*/
void
meta_screen_get_monitor_geometry (MetaScreen *screen,
int monitor,
MetaRectangle *geometry)
{
g_return_if_fail (META_IS_SCREEN (screen));
g_return_if_fail (monitor >= 0 && monitor < screen->n_monitor_infos);
g_return_if_fail (geometry != NULL);
*geometry = screen->monitor_infos[monitor].rect;
}
#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;
if (screen->workspace_layout_overridden)
return;
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
screen->starting_corner = META_SCREEN_TOPLEFT;
}
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 = %u\n",
screen->rows_of_workspaces,
screen->columns_of_workspaces,
screen->vertical_workspaces,
screen->starting_corner);
}
/**
* meta_screen_override_workspace_layout:
* @screen: a #MetaScreen
* @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_screen_override_workspace_layout (MetaScreen *screen,
MetaScreenCorner starting_corner,
gboolean vertical_layout,
int n_rows,
int n_columns)
{
g_return_if_fail (META_IS_SCREEN (screen));
g_return_if_fail (n_rows > 0 || n_columns > 0);
g_return_if_fail (n_rows != 0 && n_columns != 0);
screen->workspace_layout_overridden = TRUE;
screen->vertical_workspaces = vertical_layout != FALSE;
screen->starting_corner = starting_corner;
screen->rows_of_workspaces = n_rows;
screen->columns_of_workspaces = n_columns;
/* In theory we should remove _NET_DESKTOP_LAYOUT from _NET_SUPPORTED at this
* point, but it's unlikely that anybody checks that, and it's unlikely that
* anybody who checks that handles changes, so we'd probably just create
* a race condition. And it's hard to implement with the code in set_supported_hint()
*/
}
static void
set_workspace_names (MetaScreen *screen)
{
/* This updates names on root window when the pref changes,
* note we only get prefs change notify if things have
* really changed.
*/
GString *flattened;
int i;
int n_spaces;
/* flatten to nul-separated list */
n_spaces = meta_screen_get_n_workspaces (screen);
flattened = g_string_new ("");
i = 0;
while (i < n_spaces)
{
const char *name;
name = meta_prefs_get_workspace_name (i);
if (name)
g_string_append_len (flattened, name,
strlen (name) + 1);
else
g_string_append_len (flattened, "", 1);
++i;
}
meta_error_trap_push (screen->display);
XChangeProperty (screen->display->xdisplay,
screen->xroot,
screen->display->atom__NET_DESKTOP_NAMES,
screen->display->atom_UTF8_STRING,
8, PropModeReplace,
(unsigned char *)flattened->str, flattened->len);
meta_error_trap_pop (screen->display);
g_string_free (flattened, TRUE);
}
void
meta_screen_update_workspace_names (MetaScreen *screen)
{
char **names;
int n_names;
int i;
/* this updates names in prefs when the root window property changes,
* iff the new property contents don't match what's already in prefs
*/
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;
while (i < n_names)
{
meta_topic (META_DEBUG_PREFS,
"Setting workspace %d name to \"%s\" due to _NET_DESKTOP_NAMES change\n",
i, names[i] ? names[i] : "null");
meta_prefs_change_workspace_name (i, names[i]);
++i;
}
g_strfreev (names);
}
Window
meta_create_offscreen_window (Display *xdisplay,
Window parent,
long valuemask)
{
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;
attrs.event_mask = valuemask;
return XCreateWindow (xdisplay,
parent,
-100, -100, 1, 1,
0,
CopyFromParent,
CopyFromParent,
(Visual *)CopyFromParent,
CWOverrideRedirect | CWEventMask,
&attrs);
}
static void
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->workspaces;
tmp = data;
while (tmp_list != NULL)
{
MetaWorkspace *workspace = tmp_list->data;
if (workspace->screen == screen)
{
meta_workspace_get_work_area_all_monitors (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);
meta_error_trap_pop (screen->display);
g_signal_emit (screen, screen_signals[WORKAREAS_CHANGED], 0);
}
static gboolean
set_work_area_later_func (MetaScreen *screen)
{
meta_topic (META_DEBUG_WORKAREA,
"Running work area hint computation function\n");
screen->work_area_later = 0;
set_work_area_hint (screen);
return FALSE;
}
void
meta_screen_queue_workarea_recalc (MetaScreen *screen)
{
/* Recompute work area later before redrawing */
if (screen->work_area_later == 0)
{
meta_topic (META_DEBUG_WORKAREA,
"Adding work area hint computation function\n");
screen->work_area_later =
meta_later_add (META_LATER_BEFORE_REDRAW,
(GSourceFunc) set_work_area_later_func,
screen,
NULL);
}
}
#ifdef WITH_VERBOSE_MODE
static char *
meta_screen_corner_to_string (MetaScreenCorner corner)
{
switch (corner)
{
case META_SCREEN_TOPLEFT:
return "TopLeft";
case META_SCREEN_TOPRIGHT:
return "TopRight";
case META_SCREEN_BOTTOMLEFT:
return "BottomLeft";
case META_SCREEN_BOTTOMRIGHT:
return "BottomRight";
}
return "Unknown";
}
#endif /* WITH_VERBOSE_MODE */
void
meta_screen_calc_workspace_layout (MetaScreen *screen,
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 = 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;
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\n",
rows, cols, current_space, num_workspaces,
screen->vertical_workspaces ? "(true)" : "(false)",
meta_screen_corner_to_string (screen->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_SCREEN_TOPLEFT
* vertical_workspaces = 0 vertical_workspaces=1
* 1234 1357
* 5678 2468
*
* starting_corner = META_SCREEN_TOPRIGHT
* vertical_workspaces = 0 vertical_workspaces=1
* 4321 7531
* 8765 8642
*
* starting_corner = META_SCREEN_BOTTOMLEFT
* vertical_workspaces = 0 vertical_workspaces=1
* 5678 2468
* 1234 1357
*
* starting_corner = META_SCREEN_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);
current_row = -1;
current_col = -1;
i = 0;
switch (screen->starting_corner)
{
case META_SCREEN_TOPLEFT:
if (screen->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_SCREEN_TOPRIGHT:
if (screen->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_SCREEN_BOTTOMLEFT:
if (screen->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_SCREEN_BOTTOMRIGHT:
if (screen->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)\n",
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 ())
{
r = 0;
while (r < layout->rows)
{
meta_verbose (" ");
meta_push_no_msg_prefix ();
c = 0;
while (c < layout->cols)
{
if (r == layout->current_row &&
c == layout->current_col)
meta_verbose ("*%2d ", layout->grid[r*layout->cols+c]);
else
meta_verbose ("%3d ", layout->grid[r*layout->cols+c]);
++c;
}
meta_verbose ("\n");
meta_pop_no_msg_prefix ();
++r;
}
}
#endif /* WITH_VERBOSE_MODE */
}
void
meta_screen_free_workspace_layout (MetaWorkspaceLayout *layout)
{
g_free (layout->grid);
}
static void
meta_screen_resize_func (MetaScreen *screen,
MetaWindow *window,
void *user_data)
{
if (window->struts)
{
meta_window_update_struts (window);
}
meta_window_queue (window, META_QUEUE_MOVE_RESIZE);
meta_window_recalc_features (window);
}
void
meta_screen_resize (MetaScreen *screen,
int width,
int height)
{
GSList *windows, *tmp;
MetaMonitorInfo *old_monitor_infos;
screen->rect.width = width;
screen->rect.height = height;
/* Save the old monitor infos, so they stay valid during the update */
old_monitor_infos = screen->monitor_infos;
reload_monitor_infos (screen);
set_desktop_geometry_hint (screen);
/* Resize the guard window to fill the screen again. */
if (screen->guard_window != None)
{
XWindowChanges changes;
changes.x = 0;
changes.y = 0;
changes.width = width;
changes.height = height;
XConfigureWindow(screen->display->xdisplay,
screen->guard_window,
CWX | CWY | CWWidth | CWHeight,
&changes);
}
if (screen->display->compositor)
meta_compositor_sync_screen_size (screen->display->compositor,
screen, width, height);
/* Queue a resize on all the windows */
meta_screen_foreach_window (screen, meta_screen_resize_func, 0);
/* Fix up monitor for all windows on this screen */
windows = meta_display_list_windows (screen->display,
META_LIST_INCLUDE_OVERRIDE_REDIRECT);
for (tmp = windows; tmp != NULL; tmp = tmp->next)
{
MetaWindow *window = tmp->data;
if (window->screen == screen)
meta_window_update_for_monitors_changed (window);
}
g_free (old_monitor_infos);
g_slist_free (windows);
g_signal_emit (screen, screen_signals[MONITORS_CHANGED], 0);
}
void
meta_screen_update_showing_desktop_hint (MetaScreen *screen)
{
unsigned long data[1];
data[0] = screen->active_workspace->showing_desktop ? 1 : 0;
meta_error_trap_push (screen->display);
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom__NET_SHOWING_DESKTOP,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 1);
meta_error_trap_pop (screen->display);
}
static void
queue_windows_showing (MetaScreen *screen)
{
GSList *windows;
GSList *tmp;
/* 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 (screen->display, META_LIST_DEFAULT);
tmp = windows;
while (tmp != NULL)
{
MetaWindow *w = tmp->data;
if (w->screen == screen)
meta_window_queue (w, META_QUEUE_CALC_SHOWING);
tmp = tmp->next;
}
g_slist_free (windows);
}
void
meta_screen_minimize_all_on_active_workspace_except (MetaScreen *screen,
MetaWindow *keep)
{
GList *windows;
GList *tmp;
windows = screen->active_workspace->windows;
tmp = windows;
while (tmp != NULL)
{
MetaWindow *w = tmp->data;
if (w->screen == screen &&
w->has_minimize_func &&
w != keep)
meta_window_minimize (w);
tmp = tmp->next;
}
}
void
meta_screen_show_desktop (MetaScreen *screen,
guint32 timestamp)
{
GList *windows;
if (screen->active_workspace->showing_desktop)
return;
screen->active_workspace->showing_desktop = TRUE;
queue_windows_showing (screen);
/* Focus the most recently used META_WINDOW_DESKTOP window, if there is one;
* see bug 159257.
*/
windows = screen->active_workspace->mru_list;
while (windows != NULL)
{
MetaWindow *w = windows->data;
if (w->screen == screen &&
w->type == META_WINDOW_DESKTOP)
{
meta_window_focus (w, timestamp);
break;
}
windows = windows->next;
}
meta_screen_update_showing_desktop_hint (screen);
}
void
meta_screen_unshow_desktop (MetaScreen *screen)
{
if (!screen->active_workspace->showing_desktop)
return;
screen->active_workspace->showing_desktop = FALSE;
queue_windows_showing (screen);
meta_screen_update_showing_desktop_hint (screen);
}
#ifdef HAVE_STARTUP_NOTIFICATION
static gboolean startup_sequence_timeout (void *data);
static void
update_startup_feedback (MetaScreen *screen)
{
if (screen->startup_sequences != NULL)
{
meta_topic (META_DEBUG_STARTUP,
"Setting busy cursor\n");
meta_screen_set_cursor (screen, META_CURSOR_BUSY);
}
else
{
meta_topic (META_DEBUG_STARTUP,
"Setting default cursor\n");
meta_screen_set_cursor (screen, META_CURSOR_DEFAULT);
}
}
static void
add_sequence (MetaScreen *screen,
SnStartupSequence *sequence)
{
meta_topic (META_DEBUG_STARTUP,
"Adding sequence %s\n",
sn_startup_sequence_get_id (sequence));
sn_startup_sequence_ref (sequence);
screen->startup_sequences = g_slist_prepend (screen->startup_sequences,
sequence);
/* our timeout just polls every second, instead of bothering
* to compute exactly when we may next time out
*/
if (screen->startup_sequence_timeout == 0)
screen->startup_sequence_timeout = g_timeout_add_seconds (1,
startup_sequence_timeout,
screen);
update_startup_feedback (screen);
}
static void
remove_sequence (MetaScreen *screen,
SnStartupSequence *sequence)
{
meta_topic (META_DEBUG_STARTUP,
"Removing sequence %s\n",
sn_startup_sequence_get_id (sequence));
screen->startup_sequences = g_slist_remove (screen->startup_sequences,
sequence);
if (screen->startup_sequences == NULL &&
screen->startup_sequence_timeout != 0)
{
g_source_remove (screen->startup_sequence_timeout);
screen->startup_sequence_timeout = 0;
}
update_startup_feedback (screen);
sn_startup_sequence_unref (sequence);
}
typedef struct
{
GSList *list;
GTimeVal now;
} CollectTimedOutData;
/* This should be fairly long, as it should never be required unless
* apps or .desktop files are buggy, and it's confusing if
* OpenOffice or whatever seems to stop launching - people
* might decide they need to launch it again.
*/
#define STARTUP_TIMEOUT 15000
static void
collect_timed_out_foreach (void *element,
void *data)
{
CollectTimedOutData *ctod = data;
SnStartupSequence *sequence = element;
long tv_sec, tv_usec;
double elapsed;
sn_startup_sequence_get_last_active_time (sequence, &tv_sec, &tv_usec);
elapsed =
((((double)ctod->now.tv_sec - tv_sec) * G_USEC_PER_SEC +
(ctod->now.tv_usec - tv_usec))) / 1000.0;
meta_topic (META_DEBUG_STARTUP,
"Sequence used %g seconds vs. %g max: %s\n",
elapsed, (double) STARTUP_TIMEOUT,
sn_startup_sequence_get_id (sequence));
if (elapsed > STARTUP_TIMEOUT)
ctod->list = g_slist_prepend (ctod->list, sequence);
}
static gboolean
startup_sequence_timeout (void *data)
{
MetaScreen *screen = data;
CollectTimedOutData ctod;
GSList *tmp;
ctod.list = NULL;
g_get_current_time (&ctod.now);
g_slist_foreach (screen->startup_sequences,
collect_timed_out_foreach,
&ctod);
tmp = ctod.list;
while (tmp != NULL)
{
SnStartupSequence *sequence = tmp->data;
meta_topic (META_DEBUG_STARTUP,
"Timed out sequence %s\n",
sn_startup_sequence_get_id (sequence));
sn_startup_sequence_complete (sequence);
tmp = tmp->next;
}
g_slist_free (ctod.list);
if (screen->startup_sequences != NULL)
{
return TRUE;
}
else
{
/* remove */
screen->startup_sequence_timeout = 0;
return FALSE;
}
}
static void
meta_screen_sn_event (SnMonitorEvent *event,
void *user_data)
{
MetaScreen *screen;
SnStartupSequence *sequence;
screen = user_data;
sequence = sn_monitor_event_get_startup_sequence (event);
sn_startup_sequence_ref (sequence);
switch (sn_monitor_event_get_type (event))
{
case SN_MONITOR_EVENT_INITIATED:
{
const char *wmclass;
wmclass = sn_startup_sequence_get_wmclass (sequence);
meta_topic (META_DEBUG_STARTUP,
"Received startup initiated for %s wmclass %s\n",
sn_startup_sequence_get_id (sequence),
wmclass ? wmclass : "(unset)");
add_sequence (screen, sequence);
}
break;
case SN_MONITOR_EVENT_COMPLETED:
{
meta_topic (META_DEBUG_STARTUP,
"Received startup completed for %s\n",
sn_startup_sequence_get_id (sequence));
remove_sequence (screen,
sn_monitor_event_get_startup_sequence (event));
}
break;
case SN_MONITOR_EVENT_CHANGED:
meta_topic (META_DEBUG_STARTUP,
"Received startup changed for %s\n",
sn_startup_sequence_get_id (sequence));
break;
case SN_MONITOR_EVENT_CANCELED:
meta_topic (META_DEBUG_STARTUP,
"Received startup canceled for %s\n",
sn_startup_sequence_get_id (sequence));
break;
}
g_signal_emit (G_OBJECT (screen), screen_signals[STARTUP_SEQUENCE_CHANGED], 0, sequence);
sn_startup_sequence_unref (sequence);
}
/**
* meta_screen_get_startup_sequences: (skip)
* @screen:
*
* Return value: (transfer none): Currently active #SnStartupSequence items
*/
GSList *
meta_screen_get_startup_sequences (MetaScreen *screen)
{
return screen->startup_sequences;
}
#endif
/* Sets the initial_timestamp and initial_workspace properties
* of a window according to information given us by the
* startup-notification library.
*
* Returns TRUE if startup properties have been applied, and
* FALSE if they have not (for example, if they had already
* been applied.)
*/
gboolean
meta_screen_apply_startup_properties (MetaScreen *screen,
MetaWindow *window)
{
#ifdef HAVE_STARTUP_NOTIFICATION
const char *startup_id;
GSList *tmp;
SnStartupSequence *sequence;
/* Does the window have a startup ID stored? */
startup_id = meta_window_get_startup_id (window);
meta_topic (META_DEBUG_STARTUP,
"Applying startup props to %s id \"%s\"\n",
window->desc,
startup_id ? startup_id : "(none)");
sequence = NULL;
if (startup_id == NULL)
{
/* No startup ID stored for the window. Let's ask the
* startup-notification library whether there's anything
* stored for the resource name or resource class hints.
*/
tmp = screen->startup_sequences;
while (tmp != NULL)
{
const char *wmclass;
wmclass = sn_startup_sequence_get_wmclass (tmp->data);
if (wmclass != NULL &&
((window->res_class &&
strcmp (wmclass, window->res_class) == 0) ||
(window->res_name &&
strcmp (wmclass, window->res_name) == 0)))
{
sequence = tmp->data;
g_assert (window->startup_id == NULL);
window->startup_id = g_strdup (sn_startup_sequence_get_id (sequence));
startup_id = window->startup_id;
meta_topic (META_DEBUG_STARTUP,
"Ending legacy sequence %s due to window %s\n",
sn_startup_sequence_get_id (sequence),
window->desc);
sn_startup_sequence_complete (sequence);
break;
}
tmp = tmp->next;
}
}
/* Still no startup ID? Bail. */
if (startup_id == NULL)
return FALSE;
/* We might get this far and not know the sequence ID (if the window
* already had a startup ID stored), so let's look for one if we don't
* already know it.
*/
if (sequence == NULL)
{
tmp = screen->startup_sequences;
while (tmp != NULL)
{
const char *id;
id = sn_startup_sequence_get_id (tmp->data);
if (strcmp (id, startup_id) == 0)
{
sequence = tmp->data;
break;
}
tmp = tmp->next;
}
}
if (sequence != NULL)
{
gboolean changed_something = FALSE;
meta_topic (META_DEBUG_STARTUP,
"Found startup sequence for window %s ID \"%s\"\n",
window->desc, startup_id);
if (!window->initial_workspace_set)
{
int space = sn_startup_sequence_get_workspace (sequence);
if (space >= 0)
{
meta_topic (META_DEBUG_STARTUP,
"Setting initial window workspace to %d based on startup info\n",
space);
window->initial_workspace_set = TRUE;
window->initial_workspace = space;
changed_something = TRUE;
}
}
if (!window->initial_timestamp_set)
{
guint32 timestamp = sn_startup_sequence_get_timestamp (sequence);
meta_topic (META_DEBUG_STARTUP,
"Setting initial window timestamp to %u based on startup info\n",
timestamp);
window->initial_timestamp_set = TRUE;
window->initial_timestamp = timestamp;
changed_something = TRUE;
}
return changed_something;
}
else
{
meta_topic (META_DEBUG_STARTUP,
"Did not find startup sequence for window %s ID \"%s\"\n",
window->desc, startup_id);
}
#endif /* HAVE_STARTUP_NOTIFICATION */
return FALSE;
}
int
meta_screen_get_screen_number (MetaScreen *screen)
{
return screen->number;
}
/**
* meta_screen_get_display:
* @screen: A #MetaScreen
*
* Retrieve the display associated with screen.
*
* Returns: (transfer none): Display
*/
MetaDisplay *
meta_screen_get_display (MetaScreen *screen)
{
return screen->display;
}
/**
* meta_screen_get_xroot: (skip)
*
*/
Window
meta_screen_get_xroot (MetaScreen *screen)
{
return screen->xroot;
}
/**
* meta_screen_get_size:
* @screen: A #MetaScreen
* @width: (out): The width of the screen
* @height: (out): The height of the screen
*
* Retrieve the size of the screen.
*/
void
meta_screen_get_size (MetaScreen *screen,
int *width,
int *height)
{
if (width != NULL)
*width = screen->rect.width;
if (height != NULL)
*height = screen->rect.height;
}
/**
* meta_screen_get_compositor_data: (skip)
*
*/
gpointer
meta_screen_get_compositor_data (MetaScreen *screen)
{
return screen->compositor_data;
}
void
meta_screen_set_compositor_data (MetaScreen *screen,
gpointer compositor)
{
screen->compositor_data = compositor;
}
void
meta_screen_set_cm_selection (MetaScreen *screen)
{
char selection[32];
Atom a;
screen->wm_cm_timestamp = meta_display_get_current_time_roundtrip (
screen->display);
g_snprintf (selection, sizeof(selection), "_NET_WM_CM_S%d", screen->number);
meta_verbose ("Setting selection: %s\n", selection);
a = XInternAtom (screen->display->xdisplay, selection, FALSE);
XSetSelectionOwner (screen->display->xdisplay, a,
screen->wm_cm_selection_window, screen->wm_cm_timestamp);
}
void
meta_screen_unset_cm_selection (MetaScreen *screen)
{
char selection[32];
Atom a;
g_snprintf (selection, sizeof(selection), "_NET_WM_CM_S%d", screen->number);
a = XInternAtom (screen->display->xdisplay, selection, FALSE);
XSetSelectionOwner (screen->display->xdisplay, a,
None, screen->wm_cm_timestamp);
}
/**
* meta_screen_get_workspaces: (skip)
* @screen: a #MetaScreen
*
* Returns: (transfer none) (element-type Meta.Workspace): The workspaces for @screen
*/
GList *
meta_screen_get_workspaces (MetaScreen *screen)
{
return screen->workspaces;
}
int
meta_screen_get_active_workspace_index (MetaScreen *screen)
{
MetaWorkspace *active = screen->active_workspace;
if (!active)
return -1;
return meta_workspace_index (active);
}
/**
* meta_screen_get_active_workspace:
*
* Returns: (transfer none): The current workspace
*/
MetaWorkspace *
meta_screen_get_active_workspace (MetaScreen *screen)
{
return screen->active_workspace;
}
void
meta_screen_restacked (MetaScreen *screen)
{
g_signal_emit (screen, screen_signals[RESTACKED], 0);
}
void
meta_screen_workspace_switched (MetaScreen *screen,
int from,
int to,
MetaMotionDirection direction)
{
g_signal_emit (screen, screen_signals[WORKSPACE_SWITCHED], 0,
from, to, direction);
}
void
meta_screen_set_active_workspace_hint (MetaScreen *screen)
{
unsigned long data[1];
/* this is because we destroy the spaces in order,
* so we always end up setting a current desktop of
* 0 when closing a screen, so lose the current desktop
* on restart. By doing this we keep the current
* desktop on restart.
*/
if (screen->closing > 0)
return;
data[0] = meta_workspace_index (screen->active_workspace);
meta_verbose ("Setting _NET_CURRENT_DESKTOP to %lu\n", data[0]);
meta_error_trap_push (screen->display);
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom__NET_CURRENT_DESKTOP,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 1);
meta_error_trap_pop (screen->display);
}
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