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mutter/src/screen.c
Elijah Newren 3cb72d338c Patch from jylefort@FreeBSD.org to prevent a crash when changing 
2006-05-15  Elijah Newren  <newren gmail com>

	* src/screen.c (reload_xinerama_infos): Patch from
	jylefort@FreeBSD.org to prevent a crash when changing resolution.
	Fixes #340847.
2006-05-15 18:37:36 +00:00

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/* 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.h"
#include "util.h"
#include "errors.h"
#include "window.h"
#include "frame.h"
#include "prefs.h"
#include "workspace.h"
#include "keybindings.h"
#include "stack.h"
#include "xprops.h"
#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);
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)
{
#define N_SUPPORTED 58
Atom atoms[N_SUPPORTED];
atoms[0] = screen->display->atom_net_wm_name;
atoms[1] = screen->display->atom_net_close_window;
atoms[2] = screen->display->atom_net_wm_state;
atoms[3] = screen->display->atom_net_wm_state_shaded;
atoms[4] = screen->display->atom_net_wm_state_maximized_vert;
atoms[5] = screen->display->atom_net_wm_state_maximized_horz;
atoms[6] = screen->display->atom_net_wm_desktop;
atoms[7] = screen->display->atom_net_number_of_desktops;
atoms[8] = screen->display->atom_net_current_desktop;
atoms[9] = screen->display->atom_net_wm_window_type;
atoms[10] = screen->display->atom_net_wm_window_type_desktop;
atoms[11] = screen->display->atom_net_wm_window_type_dock;
atoms[12] = screen->display->atom_net_wm_window_type_toolbar;
atoms[13] = screen->display->atom_net_wm_window_type_menu;
atoms[14] = screen->display->atom_net_wm_window_type_dialog;
atoms[15] = screen->display->atom_net_wm_window_type_normal;
atoms[16] = screen->display->atom_net_wm_state_modal;
atoms[17] = screen->display->atom_net_client_list;
atoms[18] = screen->display->atom_net_client_list_stacking;
atoms[19] = screen->display->atom_net_wm_state_skip_taskbar;
atoms[20] = screen->display->atom_net_wm_state_skip_pager;
atoms[21] = screen->display->atom_net_wm_icon_name;
atoms[22] = screen->display->atom_net_wm_icon;
atoms[23] = screen->display->atom_net_wm_icon_geometry;
atoms[24] = screen->display->atom_net_wm_moveresize;
atoms[25] = screen->display->atom_net_active_window;
atoms[26] = screen->display->atom_net_wm_strut;
atoms[27] = screen->display->atom_net_wm_state_hidden;
atoms[28] = screen->display->atom_net_wm_window_type_utility;
atoms[29] = screen->display->atom_net_wm_window_type_splash;
atoms[30] = screen->display->atom_net_wm_state_fullscreen;
atoms[31] = screen->display->atom_net_wm_ping;
atoms[32] = screen->display->atom_net_wm_pid;
atoms[33] = screen->display->atom_net_workarea;
atoms[34] = screen->display->atom_net_showing_desktop;
atoms[35] = screen->display->atom_net_desktop_layout;
atoms[36] = screen->display->atom_net_desktop_names;
atoms[37] = screen->display->atom_net_wm_allowed_actions;
atoms[38] = screen->display->atom_net_wm_action_move;
atoms[39] = screen->display->atom_net_wm_action_resize;
atoms[40] = screen->display->atom_net_wm_action_shade;
atoms[41] = screen->display->atom_net_wm_action_stick;
atoms[42] = screen->display->atom_net_wm_action_maximize_horz;
atoms[43] = screen->display->atom_net_wm_action_maximize_vert;
atoms[44] = screen->display->atom_net_wm_action_change_desktop;
atoms[45] = screen->display->atom_net_wm_action_close;
atoms[46] = screen->display->atom_net_wm_state_above;
atoms[47] = screen->display->atom_net_wm_state_below;
atoms[48] = screen->display->atom_net_startup_id;
atoms[49] = screen->display->atom_net_wm_strut_partial;
atoms[50] = screen->display->atom_net_wm_action_fullscreen;
atoms[51] = screen->display->atom_net_wm_action_minimize;
atoms[52] = screen->display->atom_net_frame_extents;
atoms[53] = screen->display->atom_net_request_frame_extents;
atoms[54] = screen->display->atom_net_wm_user_time;
atoms[55] = screen->display->atom_net_wm_state_demands_attention;
atoms[56] = screen->display->atom_net_desktop_geometry;
atoms[57] = screen->display->atom_net_desktop_viewport;
//atoms[58] = screen->display->atom_net_restack_window;
//atoms[59] = screen->display->atom_net_moveresize_window;
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom_net_supported,
XA_ATOM,
32, PropModeReplace, (guchar*) atoms, N_SUPPORTED);
return Success;
#undef N_SUPPORTED
}
static int
set_wm_icon_size_hint (MetaScreen *screen)
{
#define N_VALS 6
gulong vals[N_VALS];
/* min width, min height, max w, max h, width inc, height inc */
vals[0] = META_ICON_WIDTH;
vals[1] = META_ICON_HEIGHT;
vals[2] = META_ICON_WIDTH;
vals[3] = META_ICON_HEIGHT;
vals[4] = 0;
vals[5] = 0;
XChangeProperty (screen->display->xdisplay, screen->xroot,
screen->display->atom_wm_icon_size,
XA_CARDINAL,
32, PropModeReplace, (guchar*) vals, N_VALS);
return Success;
#undef N_VALS
}
static void
reload_xinerama_infos (MetaScreen *screen)
{
MetaDisplay *display;
{
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,
Time 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];
Time 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 */
}
new_wm_sn_owner = meta_create_offscreen_window (xdisplay, xroot);
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;
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);
XSelectInput (display->xdisplay, screen->no_focus_window,
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);
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)
{
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);
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;
meta_window_new_with_attrs (screen->display, info->xwindow, TRUE,
&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)
{
GList *windows, *list;
if (!screen->display->compositor)
return;
windows = list_windows (screen);
meta_stack_freeze (screen->stack);
for (list = windows; list != NULL; list = list->next)
{
WindowInfo *info = list->data;
meta_compositor_add_window (screen->display->compositor,
info->xwindow, &info->attrs);
}
meta_stack_thaw (screen->stack);
g_list_foreach (windows, (GFunc)g_free, NULL);
g_list_free (windows);
}
MetaScreen*
meta_screen_for_x_screen (Screen *xscreen)
{
MetaDisplay *display;
display = meta_display_for_x_display (DisplayOfScreen (xscreen));
if (display == NULL)
return NULL;
return meta_display_screen_for_x_screen (display, xscreen);
}
static void
prefs_changed_callback (MetaPreference pref,
gpointer data)
{
MetaScreen *screen = data;
if (pref == META_PREF_NUM_WORKSPACES)
{
update_num_workspaces (screen);
}
else if (pref == META_PREF_FOCUS_MODE)
{
update_focus_mode (screen);
}
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_move_resize (window);
}
void
meta_screen_queue_window_resizes (MetaScreen *screen)
{
meta_screen_foreach_window (screen, queue_resize, NULL);
}
int
meta_screen_get_n_workspaces (MetaScreen *screen)
{
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)
{
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, meta_display_get_current_time_roundtrip (screen->display));
/* 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);
}
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;
window = tmp->data;
entries[i].key = (MetaTabEntryKey) window->xwindow;
entries[i].title = window->title;
entries[i].icon = 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;
}
screen->tab_popup = meta_ui_tab_popup_new (entries,
screen->number,
len,
5, /* FIXME */
TRUE);
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)
{
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 = PropertyChangeMask;
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_GNUC_FUNCTION, 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_move_resize (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_calc_showing (w);
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,
Time 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
void
meta_screen_apply_startup_properties (MetaScreen *screen,
MetaWindow *window)
{
#ifdef HAVE_STARTUP_NOTIFICATION
const char *startup_id;
GSList *tmp;
SnStartupSequence *sequence;
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)
{
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;
}
}
if (startup_id == NULL)
return;
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)
{
int space;
Time timestamp;
meta_topic (META_DEBUG_STARTUP,
"Found startup sequence for window %s ID \"%s\"\n",
window->desc, startup_id);
if (!window->initial_workspace_set)
{
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;
}
}
if (!window->initial_timestamp_set)
{
timestamp = sn_startup_sequence_get_timestamp (sequence);
meta_topic (META_DEBUG_STARTUP,
"Setting initial window timestamp to %lu based on startup info\n",
timestamp);
window->initial_timestamp_set = TRUE;
window->initial_timestamp = timestamp;
}
return;
}
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 */
}
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