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07c1003905
mutter/src/core/screen.c
Tomas Frydrych 07c1003905 Live previews for hidden windows. 
ClutterActors for hidden windows (such windows on different than active
workspaces and windows that are minimized) are available, and reflect the
actual state of the window. This is intended for use in task-switchers etc.

This feature is disabled by default (due to increased demand on resources),
and can be enabled through the metacity/general/live_hidden_windows gconf key.

A trivial sample window switcher is included in the scratch plugin (activated
by clicking on the slide out panel).
2008-10-24 10:07:24 +01:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Metacity 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 "util.h"
#include "errors.h"
#include "window-private.h"
#include "frame-private.h"
#include "prefs.h"
#include "workspace-private.h"
#include "keybindings.h"
#include "stack.h"
#include "xprops.h"
#include "compositor.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,
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
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 int
set_supported_hint (MetaScreen *screen)
{
Atom atoms[] = {
#define EWMH_ATOMS_ONLY
#define item(x) screen->display->atom_##x,
#include "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
}
static void
reload_xinerama_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;
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].rect.x = infos[i].x_org;
screen->xinerama_infos[i].rect.y = infos[i].y_org;
screen->xinerama_infos[i].rect.width = infos[i].width;
screen->xinerama_infos[i].rect.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].rect.x,
screen->xinerama_infos[i].rect.y,
screen->xinerama_infos[i].rect.width,
screen->xinerama_infos[i].rect.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].rect.x = monitors[i].x;
screen->xinerama_infos[i].rect.y = monitors[i].y;
screen->xinerama_infos[i].rect.width = monitors[i].width;
screen->xinerama_infos[i].rect.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].rect.x,
screen->xinerama_infos[i].rect.y,
screen->xinerama_infos[i].rect.width,
screen->xinerama_infos[i].rect.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].rect = screen->rect;
screen->xinerama_infos[0].rect.width = screen->rect.width / 2;
screen->xinerama_infos[1].number = 1;
screen->xinerama_infos[1].rect = screen->rect;
screen->xinerama_infos[1].rect.x = screen->rect.width / 2;
screen->xinerama_infos[1].rect.width = screen->rect.width / 2;
}
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].rect = screen->rect;
}
}
g_assert (screen->n_xinerama_infos > 0);
g_assert (screen->xinerama_infos != NULL);
}
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, FALSE) != 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 |
#ifdef HAVE_COMPOSITE_EXTENSIONS
ExposureMask |
#endif
attr.your_event_mask);
if (meta_error_trap_pop_with_return (display, FALSE) != 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->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;
#ifdef HAVE_COMPOSITE_EXTENSIONS
screen->wm_cm_selection_window = meta_create_offscreen_window (xdisplay,
xroot,
NoEventMask);
#endif
screen->work_area_idle = 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;
{
XFontStruct *font_info;
XGCValues gc_values;
gulong value_mask = 0;
gc_values.subwindow_mode = IncludeInferiors;
value_mask |= GCSubwindowMode;
gc_values.function = GXinvert;
value_mask |= GCFunction;
gc_values.line_width = META_WIREFRAME_XOR_LINE_WIDTH;
value_mask |= GCLineWidth;
font_info = XLoadQueryFont (screen->display->xdisplay, "fixed");
if (font_info != NULL)
{
gc_values.font = font_info->fid;
value_mask |= GCFont;
XFreeFontInfo (NULL, font_info, 1);
}
else
meta_warning ("xserver doesn't have 'fixed' font.\n");
screen->root_xor_gc = XCreateGC (screen->display->xdisplay,
screen->xroot,
value_mask,
&gc_values);
}
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);
/* 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->stack = meta_stack_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;
XGCValues gc_values = { 0 };
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_error_trap_push_with_return (screen->display);
XSelectInput (screen->display->xdisplay, screen->xroot, 0);
if (meta_error_trap_pop_with_return (screen->display, FALSE) != 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);
if (XGetGCValues (screen->display->xdisplay,
screen->root_xor_gc,
GCFont,
&gc_values))
{
XUnloadFont (screen->display->xdisplay,
gc_values.font);
}
XFreeGC (screen->display->xdisplay,
screen->root_xor_gc);
if (screen->xinerama_infos)
g_free (screen->xinerama_infos);
g_free (screen->screen_name);
g_free (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, TRUE))
{
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);
windows = list_windows (screen);
meta_stack_freeze (screen->stack);
for (list = windows; list != NULL; list = list->next)
{
WindowInfo *info = list->data;
MetaWindow *window;
window = meta_window_new_with_attrs (screen->display, info->xwindow, TRUE,
&info->attrs);
if (info->xwindow == screen->no_focus_window ||
info->xwindow == screen->flash_window ||
#ifdef HAVE_COMPOSITE_EXTENSIONS
info->xwindow == screen->wm_cm_selection_window ||
#endif
info->xwindow == screen->wm_sn_selection_window) {
meta_verbose ("Not managing our own windows\n");
continue;
}
if (screen->display->compositor)
meta_compositor_add_window (screen->display->compositor, window,
info->xwindow, &info->attrs);
}
meta_stack_thaw (screen->stack);
/*
* Because the windows have already been created/mapped/etc, if the compositor
* maintains a separate stack based on ConfigureNotify restack messages, it
* will not necessarily get what it needs; we explicitely notify the
* compositor to fix up its stacking order.
*
* For more on this issue, see comments in meta_window_hide().
*/
if (screen->display->compositor)
meta_compositor_ensure_stack_order (screen->display->compositor, screen);
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)
{
#ifdef HAVE_COMPOSITE_EXTENSIONS
MetaDisplay *display;
GList *windows, *list;
display = screen->display;
if (!display->compositor)
return;
windows = list_windows (screen);
meta_stack_freeze (screen->stack);
for (list = windows; list != NULL; list = list->next)
{
WindowInfo *info = list->data;
if (info->xwindow == screen->no_focus_window ||
info->xwindow == screen->flash_window ||
info->xwindow == screen->wm_sn_selection_window ||
info->xwindow == screen->wm_cm_selection_window) {
meta_verbose ("Not managing our own windows\n");
continue;
}
meta_compositor_add_window (display->compositor,
meta_display_lookup_x_window (display,
info->xwindow),
info->xwindow, &info->attrs);
}
meta_stack_thaw (screen->stack);
g_list_foreach (windows, (GFunc)g_free, NULL);
g_list_free (windows);
#endif
}
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)
{
/* GConf 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);
}
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 (window, META_QUEUE_MOVE_RESIZE);
}
void
meta_screen_queue_window_resizes (MetaScreen *screen)
{
meta_screen_foreach_window (screen, queue_resize, NULL);
}
int
meta_screen_get_n_workspaces (MetaScreen *screen)
{
return g_list_length (screen->workspaces);
}
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, FALSE);
}
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, FALSE);
}
static void
set_desktop_viewport_hint (MetaScreen *screen)
{
unsigned long data[2];
if (screen->closing > 0)
return;
/*
* Metacity 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, FALSE);
}
static void
update_num_workspaces (MetaScreen *screen,
guint32 timestamp)
{
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->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;
}
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_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);
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);
}
#define MAX_PREVIEW_SIZE 150.0
static GdkPixbuf *
get_window_pixbuf (MetaWindow *window,
int *width,
int *height)
{
Pixmap pmap;
GdkPixbuf *pixbuf, *scaled;
double ratio;
pmap = meta_compositor_get_window_pixmap (window->display->compositor,
window);
if (pmap == None)
return NULL;
pixbuf = meta_ui_get_pixbuf_from_pixmap (pmap);
if (pixbuf == NULL)
return NULL;
*width = gdk_pixbuf_get_width (pixbuf);
*height = gdk_pixbuf_get_height (pixbuf);
/* Scale pixbuf to max dimension MAX_PREVIEW_SIZE */
if (*width > *height)
{
ratio = ((double) *width) / MAX_PREVIEW_SIZE;
*width = (int) MAX_PREVIEW_SIZE;
*height = (int) (((double) *height) / ratio);
}
else
{
ratio = ((double) *height) / MAX_PREVIEW_SIZE;
*height = (int) MAX_PREVIEW_SIZE;
*width = (int) (((double) *width) / ratio);
}
scaled = gdk_pixbuf_scale_simple (pixbuf, *width, *height,
GDK_INTERP_BILINEAR);
g_object_unref (pixbuf);
return scaled;
}
void
meta_screen_ensure_tab_popup (MetaScreen *screen,
MetaTabList list_type,
MetaTabShowType show_type)
{
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;
GdkPixbuf *win_pixbuf;
int width, height;
window = tmp->data;
entries[i].key = (MetaTabEntryKey) window->xwindow;
entries[i].title = window->title;
win_pixbuf = get_window_pixbuf (window, &width, &height);
if (win_pixbuf == NULL)
entries[i].icon = g_object_ref (window->icon);
else
{
int icon_width, icon_height, t_width, t_height;
#define ICON_OFFSET 6
icon_width = gdk_pixbuf_get_width (window->icon);
icon_height = gdk_pixbuf_get_height (window->icon);
t_width = width + ICON_OFFSET;
t_height = height + ICON_OFFSET;
entries[i].icon = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
t_width, t_height);
gdk_pixbuf_fill (entries[i].icon, 0x00000000);
gdk_pixbuf_copy_area (win_pixbuf, 0, 0, width, height,
entries[i].icon, 0, 0);
g_object_unref (win_pixbuf);
gdk_pixbuf_composite (window->icon, entries[i].icon,
t_width - icon_width, t_height - icon_height,
icon_width, icon_height,
t_width - icon_width, t_height - icon_height,
1.0, 1.0, GDK_INTERP_BILINEAR, 255);
}
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;
}
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);
/* don't show tab popup, since proper window isn't selected yet */
}
void
meta_screen_ensure_workspace_popup (MetaScreen *screen)
{
MetaTabEntry *entries;
int len;
int i;
MetaWorkspaceLayout layout;
int n_workspaces;
int current_workspace;
if (screen->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->tab_popup = meta_ui_tab_popup_new (entries,
screen->number,
len,
layout.cols,
FALSE);
g_free (entries);
meta_screen_free_workspace_layout (&layout);
/* don't show tab popup, since proper space isn't selected yet */
}
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, TRUE);
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 MetaXineramaScreenInfo*
meta_screen_get_xinerama_for_rect (MetaScreen *screen,
MetaRectangle *rect)
{
int i;
int best_xinerama, xinerama_score;
if (screen->n_xinerama_infos == 1)
return &screen->xinerama_infos[0];
best_xinerama = 0;
xinerama_score = 0;
for (i = 0; i < screen->n_xinerama_infos; i++)
{
MetaRectangle dest;
if (meta_rectangle_intersect (&screen->xinerama_infos[i].rect,
rect,
&dest))
{
int cur = meta_rectangle_area (&dest);
if (cur > xinerama_score)
{
xinerama_score = cur;
best_xinerama = i;
}
}
}
return &screen->xinerama_infos[best_xinerama];
}
const MetaXineramaScreenInfo*
meta_screen_get_xinerama_for_window (MetaScreen *screen,
MetaWindow *window)
{
MetaRectangle window_rect;
meta_window_get_outer_rect (window, &window_rect);
return meta_screen_get_xinerama_for_rect (screen, &window_rect);
}
const MetaXineramaScreenInfo*
meta_screen_get_xinerama_neighbor (MetaScreen *screen,
int which_xinerama,
MetaScreenDirection direction)
{
MetaXineramaScreenInfo* input = screen->xinerama_infos + which_xinerama;
MetaXineramaScreenInfo* current;
int i;
for (i = 0; i < screen->n_xinerama_infos; i++)
{
current = screen->xinerama_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_xinerama_list (MetaScreen *screen,
int** xineramas_list,
int* n_xineramas)
{
const MetaXineramaScreenInfo* current;
const MetaXineramaScreenInfo* tmp;
GQueue* xinerama_queue;
int* visited;
int cur = 0;
int i;
*n_xineramas = screen->n_xinerama_infos;
*xineramas_list = g_new (int, screen->n_xinerama_infos);
/* we calculate a natural ordering by which to choose xineramas for
* window placement. We start at the current xinerama, and perform
* a breadth-first search of the xineramas starting from that
* xinerama. We choose preferentially left, then right, then down,
* then up. The visitation order produced by this traversal is the
* natural xinerama ordering.
*/
visited = g_new (int, screen->n_xinerama_infos);
for (i = 0; i < screen->n_xinerama_infos; i++)
{
visited[i] = FALSE;
}
current = meta_screen_get_current_xinerama (screen);
xinerama_queue = g_queue_new ();
g_queue_push_tail (xinerama_queue, (gpointer) current);
visited[current->number] = TRUE;
while (!g_queue_is_empty (xinerama_queue))
{
current = (const MetaXineramaScreenInfo*)
g_queue_pop_head (xinerama_queue);
(*xineramas_list)[cur++] = current->number;
/* enqueue each of the directions */
tmp = meta_screen_get_xinerama_neighbor (screen,
current->number,
META_SCREEN_LEFT);
if (tmp && !visited[tmp->number])
{
g_queue_push_tail (xinerama_queue,
(MetaXineramaScreenInfo*) tmp);
visited[tmp->number] = TRUE;
}
tmp = meta_screen_get_xinerama_neighbor (screen,
current->number,
META_SCREEN_RIGHT);
if (tmp && !visited[tmp->number])
{
g_queue_push_tail (xinerama_queue,
(MetaXineramaScreenInfo*) tmp);
visited[tmp->number] = TRUE;
}
tmp = meta_screen_get_xinerama_neighbor (screen,
current->number,
META_SCREEN_UP);
if (tmp && !visited[tmp->number])
{
g_queue_push_tail (xinerama_queue,
(MetaXineramaScreenInfo*) tmp);
visited[tmp->number] = TRUE;
}
tmp = meta_screen_get_xinerama_neighbor (screen,
current->number,
META_SCREEN_DOWN);
if (tmp && !visited[tmp->number])
{
g_queue_push_tail (xinerama_queue,
(MetaXineramaScreenInfo*) tmp);
visited[tmp->number] = TRUE;
}
}
/* in case we somehow missed some set of xineramas, go through the
* visited list and add in any xineramas that were missed
*/
for (i = 0; i < screen->n_xinerama_infos; i++)
{
if (visited[i] == FALSE)
{
(*xineramas_list)[cur++] = i;
}
}
g_free (visited);
g_queue_free (xinerama_queue);
}
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 win_x_return, win_y_return;
unsigned int mask_return;
int i;
MetaRectangle pointer_position;
screen->display->xinerama_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_xinerama_index = 0;
for (i = 0; i < screen->n_xinerama_infos; i++)
{
if (meta_rectangle_contains_rect (&screen->xinerama_infos[i].rect,
&pointer_position))
{
screen->last_xinerama_index = i;
break;
}
}
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
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);
}
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, FALSE);
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_xineramas (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, FALSE);
}
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);
}
}
#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)
{
screen->rect.width = width;
screen->rect.height = height;
reload_xinerama_infos (screen);
set_desktop_geometry_hint (screen);
/* Queue a resize on all the windows */
meta_screen_foreach_window (screen, meta_screen_resize_func, 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, FALSE);
}
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);
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 (1000,
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);
sn_startup_sequence_unref (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);
}
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);
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;
}
}
#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;
}
MetaDisplay *
meta_screen_get_display (MetaScreen *screen)
{
return screen->display;
}
Window
meta_screen_get_xroot (MetaScreen *screen)
{
return screen->xroot;
}
void
meta_screen_get_size (MetaScreen *screen,
int *width,
int *height)
{
*width = screen->rect.width;
*height = screen->rect.height;
}
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;
}
#ifdef HAVE_COMPOSITE_EXTENSIONS
void
meta_screen_set_cm_selection (MetaScreen *screen)
{
char selection[32];
Atom a;
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, CurrentTime);
}
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, CurrentTime);
}
#endif /* HAVE_COMPOSITE_EXTENSIONS */
GList *
meta_screen_get_workspaces (MetaScreen *screen)
{
return screen->workspaces;
}
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