sungmg/mutter-performance-source
1
0
Fork 0
Code Activity
mutter-performance-source/src/x11/meta-x11-display.c
Sebastian Keller e741adb82e backends/x11: Only free cursor if it was created successfully 
XcursorLibraryLoadCursor can return 'None' if the current cursor theme
is missing the requested icon. If XFreeCursor is then called on this
cursor, it generates a BadCursor error causing gnome-shell to crash.

Fixes https://gitlab.gnome.org/GNOME/mutter/issues/254
2018-08-21 16:39:41 +02:00

2160 lines
64 KiB
C
Raw Blame History

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2001 Havoc Pennington
* Copyright (C) 2002, 2003, 2004 Red Hat, Inc.
* Copyright (C) 2003, 2004 Rob Adams
* Copyright (C) 2004-2006 Elijah Newren
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:display
* @title: MetaX11Display
* @short_description: Mutter X display handler
*
* The X11 display is represented as a #MetaX11Display struct.
*/
#include "config.h"
#include "core/display-private.h"
#include "x11/meta-x11-display-private.h"
#include <gdk/gdk.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <X11/Xatom.h>
#include <X11/XKBlib.h>
#ifdef HAVE_RANDR
#include <X11/extensions/Xrandr.h>
#endif
#include <X11/extensions/shape.h>
#include <X11/Xcursor/Xcursor.h>
#include <X11/extensions/Xcomposite.h>
#include <X11/extensions/Xdamage.h>
#include <X11/extensions/Xfixes.h>
#include <X11/extensions/Xinerama.h>
#include "backends/meta-backend-private.h"
#include "backends/meta-logical-monitor.h"
#include "backends/meta-settings-private.h"
#include "backends/x11/meta-backend-x11.h"
#include "core/frame.h"
#include "core/meta-workspace-manager-private.h"
#include "core/util-private.h"
#include "core/workspace-private.h"
#include "meta/main.h"
#include "meta/meta-x11-errors.h"
#include "x11/events.h"
#include "x11/group-props.h"
#include "x11/window-props.h"
#include "x11/xprops.h"
#ifdef HAVE_WAYLAND
#include "wayland/meta-xwayland-private.h"
#endif
G_DEFINE_TYPE (MetaX11Display, meta_x11_display, G_TYPE_OBJECT)
static GQuark quark_x11_display_logical_monitor_data = 0;
typedef struct _MetaX11DisplayLogicalMonitorData
{
int xinerama_index;
} MetaX11DisplayLogicalMonitorData;
static GdkDisplay *prepared_gdk_display = NULL;
static const char *gnome_wm_keybindings = "Mutter";
static const char *net_wm_name = "Mutter";
static char *get_screen_name (Display *xdisplay,
int number);
static void on_monitors_changed_internal (MetaMonitorManager *monitor_manager,
MetaX11Display *x11_display);
static void update_cursor_theme (MetaX11Display *x11_display);
static void unset_wm_check_hint (MetaX11Display *x11_display);
static void prefs_changed_callback (MetaPreference pref,
void *data);
static void
meta_x11_display_dispose (GObject *object)
{
MetaX11Display *x11_display = META_X11_DISPLAY (object);
meta_prefs_remove_listener (prefs_changed_callback, x11_display);
meta_x11_display_ungrab_keys (x11_display);
if (x11_display->ui)
{
meta_ui_free (x11_display->ui);
x11_display->ui = NULL;
}
if (x11_display->no_focus_window != None)
{
XUnmapWindow (x11_display->xdisplay, x11_display->no_focus_window);
XDestroyWindow (x11_display->xdisplay, x11_display->no_focus_window);
x11_display->no_focus_window = None;
}
if (x11_display->composite_overlay_window != None)
{
XCompositeReleaseOverlayWindow (x11_display->xdisplay,
x11_display->composite_overlay_window);
x11_display->composite_overlay_window = None;
}
if (x11_display->wm_sn_selection_window != None)
{
XDestroyWindow (x11_display->xdisplay, x11_display->wm_sn_selection_window);
x11_display->wm_sn_selection_window = None;
}
if (x11_display->timestamp_pinging_window != None)
{
XDestroyWindow (x11_display->xdisplay, x11_display->timestamp_pinging_window);
x11_display->timestamp_pinging_window = None;
}
if (x11_display->leader_window != None)
{
XDestroyWindow (x11_display->xdisplay, x11_display->leader_window);
x11_display->leader_window = None;
}
if (x11_display->guard_window != None)
{
MetaStackTracker *stack_tracker = x11_display->display->stack_tracker;
if (stack_tracker)
{
unsigned long serial;
serial = XNextRequest (x11_display->xdisplay);
meta_stack_tracker_record_remove (stack_tracker,
x11_display->guard_window,
serial);
}
XUnmapWindow (x11_display->xdisplay, x11_display->guard_window);
XDestroyWindow (x11_display->xdisplay, x11_display->guard_window);
x11_display->guard_window = None;
}
if (x11_display->prop_hooks)
{
meta_x11_display_free_window_prop_hooks (x11_display);
x11_display->prop_hooks = NULL;
}
if (x11_display->group_prop_hooks)
{
meta_x11_display_free_group_prop_hooks (x11_display);
x11_display->group_prop_hooks = NULL;
}
if (x11_display->xids)
{
/* Must be after all calls to meta_window_unmanage() since they
* unregister windows
*/
g_hash_table_destroy (x11_display->xids);
x11_display->xids = NULL;
}
if (x11_display->xroot != None)
{
unset_wm_check_hint (x11_display);
meta_x11_error_trap_push (x11_display);
XSelectInput (x11_display->xdisplay, x11_display->xroot, 0);
if (meta_x11_error_trap_pop_with_return (x11_display) != Success)
meta_warning ("Could not release screen %d on display \"%s\"\n",
DefaultScreen (x11_display->xdisplay),
x11_display->name);
x11_display->xroot = None;
}
if (x11_display->xdisplay)
{
meta_x11_display_free_events (x11_display);
x11_display->xdisplay = NULL;
}
if (x11_display->gdk_display)
{
gdk_display_close (x11_display->gdk_display);
x11_display->gdk_display = NULL;
}
g_free (x11_display->name);
x11_display->name = NULL;
g_free (x11_display->screen_name);
x11_display->screen_name = NULL;
G_OBJECT_CLASS (meta_x11_display_parent_class)->dispose (object);
}
static void
meta_x11_display_class_init (MetaX11DisplayClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = meta_x11_display_dispose;
}
static void
meta_x11_display_init (MetaX11Display *x11_display)
{
quark_x11_display_logical_monitor_data =
g_quark_from_static_string ("-meta-x11-display-logical-monitor-data");
}
static void
query_xsync_extension (MetaX11Display *x11_display)
{
int major, minor;
x11_display->have_xsync = FALSE;
x11_display->xsync_error_base = 0;
x11_display->xsync_event_base = 0;
/* I don't think we really have to fill these in */
major = SYNC_MAJOR_VERSION;
minor = SYNC_MINOR_VERSION;
if (!XSyncQueryExtension (x11_display->xdisplay,
&x11_display->xsync_event_base,
&x11_display->xsync_error_base) ||
!XSyncInitialize (x11_display->xdisplay,
&major, &minor))
{
x11_display->xsync_error_base = 0;
x11_display->xsync_event_base = 0;
}
else
{
x11_display->have_xsync = TRUE;
XSyncSetPriority (x11_display->xdisplay, None, 10);
}
meta_verbose ("Attempted to init Xsync, found version %d.%d error base %d event base %d\n",
major, minor,
x11_display->xsync_error_base,
x11_display->xsync_event_base);
}
static void
query_xshape_extension (MetaX11Display *x11_display)
{
x11_display->have_shape = FALSE;
x11_display->shape_error_base = 0;
x11_display->shape_event_base = 0;
if (!XShapeQueryExtension (x11_display->xdisplay,
&x11_display->shape_event_base,
&x11_display->shape_error_base))
{
x11_display->shape_error_base = 0;
x11_display->shape_event_base = 0;
}
else
x11_display->have_shape = TRUE;
meta_verbose ("Attempted to init Shape, found error base %d event base %d\n",
x11_display->shape_error_base,
x11_display->shape_event_base);
}
static void
query_xcomposite_extension (MetaX11Display *x11_display)
{
x11_display->have_composite = FALSE;
x11_display->composite_error_base = 0;
x11_display->composite_event_base = 0;
if (!XCompositeQueryExtension (x11_display->xdisplay,
&x11_display->composite_event_base,
&x11_display->composite_error_base))
{
x11_display->composite_error_base = 0;
x11_display->composite_event_base = 0;
}
else
{
x11_display->composite_major_version = 0;
x11_display->composite_minor_version = 0;
if (XCompositeQueryVersion (x11_display->xdisplay,
&x11_display->composite_major_version,
&x11_display->composite_minor_version))
{
x11_display->have_composite = TRUE;
}
else
{
x11_display->composite_major_version = 0;
x11_display->composite_minor_version = 0;
}
}
meta_verbose ("Attempted to init Composite, found error base %d event base %d "
"extn ver %d %d\n",
x11_display->composite_error_base,
x11_display->composite_event_base,
x11_display->composite_major_version,
x11_display->composite_minor_version);
}
static void
query_xdamage_extension (MetaX11Display *x11_display)
{
x11_display->have_damage = FALSE;
x11_display->damage_error_base = 0;
x11_display->damage_event_base = 0;
if (!XDamageQueryExtension (x11_display->xdisplay,
&x11_display->damage_event_base,
&x11_display->damage_error_base))
{
x11_display->damage_error_base = 0;
x11_display->damage_event_base = 0;
}
else
x11_display->have_damage = TRUE;
meta_verbose ("Attempted to init Damage, found error base %d event base %d\n",
x11_display->damage_error_base,
x11_display->damage_event_base);
}
static void
query_xfixes_extension (MetaX11Display *x11_display)
{
x11_display->xfixes_error_base = 0;
x11_display->xfixes_event_base = 0;
if (XFixesQueryExtension (x11_display->xdisplay,
&x11_display->xfixes_event_base,
&x11_display->xfixes_error_base))
{
int xfixes_major, xfixes_minor;
XFixesQueryVersion (x11_display->xdisplay, &xfixes_major, &xfixes_minor);
if (xfixes_major * 100 + xfixes_minor < 500)
meta_fatal ("Mutter requires XFixes 5.0");
}
else
{
meta_fatal ("Mutter requires XFixes 5.0");
}
meta_verbose ("Attempted to init XFixes, found error base %d event base %d\n",
x11_display->xfixes_error_base,
x11_display->xfixes_event_base);
}
static void
query_xi_extension (MetaX11Display *x11_display)
{
int major = 2, minor = 3;
gboolean has_xi = FALSE;
if (XQueryExtension (x11_display->xdisplay,
"XInputExtension",
&x11_display->xinput_opcode,
&x11_display->xinput_error_base,
&x11_display->xinput_event_base))
{
if (XIQueryVersion (x11_display->xdisplay, &major, &minor) == Success)
{
int version = (major * 10) + minor;
if (version >= 22)
has_xi = TRUE;
#ifdef HAVE_XI23
if (version >= 23)
x11_display->have_xinput_23 = TRUE;
#endif /* HAVE_XI23 */
}
}
if (!has_xi)
meta_fatal ("X server doesn't have the XInput extension, version 2.2 or newer\n");
}
/*
* Initialises the bell subsystem. This involves intialising
* XKB (which, despite being a keyboard extension, is the
* place to look for bell notifications), then asking it
* to send us bell notifications, and then also switching
* off the audible bell if we're using a visual one ourselves.
*
* \bug There is a line of code that's never run that tells
* XKB to reset the bell status after we quit. Bill H said
* (<http://bugzilla.gnome.org/show_bug.cgi?id=99886#c12>)
* that XFree86's implementation is broken so we shouldn't
* call it, but that was in 2002. Is it working now?
*/
static void
init_x11_bell (MetaX11Display *x11_display)
{
int xkb_base_error_type, xkb_opcode;
if (!XkbQueryExtension (x11_display->xdisplay, &xkb_opcode,
&x11_display->xkb_base_event_type,
&xkb_base_error_type,
NULL, NULL))
{
x11_display->xkb_base_event_type = -1;
meta_warning ("could not find XKB extension.");
}
else
{
unsigned int mask = XkbBellNotifyMask;
gboolean visual_bell_auto_reset = FALSE;
/* TRUE if and when non-broken version is available */
XkbSelectEvents (x11_display->xdisplay,
XkbUseCoreKbd,
XkbBellNotifyMask,
XkbBellNotifyMask);
if (visual_bell_auto_reset)
{
XkbSetAutoResetControls (x11_display->xdisplay,
XkbAudibleBellMask,
&mask,
&mask);
}
}
}
/*
* \bug This is never called! If we had XkbSetAutoResetControls
* enabled in meta_x11_bell_init(), this wouldn't be a problem,
* but we don't.
*/
G_GNUC_UNUSED static void
shutdown_x11_bell (MetaX11Display *x11_display)
{
/* TODO: persist initial bell state in display, reset here */
XkbChangeEnabledControls (x11_display->xdisplay,
XkbUseCoreKbd,
XkbAudibleBellMask,
XkbAudibleBellMask);
}
/*
* Turns the bell to audible or visual. This tells X what to do, but
* not Mutter; you will need to set the "visual bell" pref for that.
*/
static void
set_x11_bell_is_audible (MetaX11Display *x11_display,
gboolean is_audible)
{
#ifdef HAVE_LIBCANBERRA
/* When we are playing sounds using libcanberra support, we handle the
* bell whether its an audible bell or a visible bell */
gboolean enable_system_bell = FALSE;
#else
gboolean enable_system_bell = is_audible;
#endif /* HAVE_LIBCANBERRA */
XkbChangeEnabledControls (x11_display->xdisplay,
XkbUseCoreKbd,
XkbAudibleBellMask,
enable_system_bell ? XkbAudibleBellMask : 0);
}
static void
on_is_audible_changed (MetaBell *bell,
gboolean is_audible,
MetaX11Display *x11_display)
{
set_x11_bell_is_audible (x11_display, is_audible);
}
static void
set_desktop_geometry_hint (MetaX11Display *x11_display)
{
unsigned long data[2];
int monitor_width, monitor_height;
if (x11_display->display->closing > 0)
return;
meta_display_get_size (x11_display->display, &monitor_width, &monitor_height);
data[0] = monitor_width;
data[1] = monitor_height;
meta_verbose ("Setting _NET_DESKTOP_GEOMETRY to %lu, %lu\n", data[0], data[1]);
meta_x11_error_trap_push (x11_display);
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_DESKTOP_GEOMETRY,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 2);
meta_x11_error_trap_pop (x11_display);
}
static void
set_desktop_viewport_hint (MetaX11Display *x11_display)
{
unsigned long data[2];
if (x11_display->display->closing > 0)
return;
/*
* Mutter does not implement viewports, so this is a fixed 0,0
*/
data[0] = 0;
data[1] = 0;
meta_verbose ("Setting _NET_DESKTOP_VIEWPORT to 0, 0\n");
meta_x11_error_trap_push (x11_display);
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_DESKTOP_VIEWPORT,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 2);
meta_x11_error_trap_pop (x11_display);
}
static int
set_wm_check_hint (MetaX11Display *x11_display)
{
unsigned long data[1];
g_return_val_if_fail (x11_display->leader_window != None, 0);
data[0] = x11_display->leader_window;
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_SUPPORTING_WM_CHECK,
XA_WINDOW,
32, PropModeReplace, (guchar*) data, 1);
return Success;
}
static void
unset_wm_check_hint (MetaX11Display *x11_display)
{
XDeleteProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_SUPPORTING_WM_CHECK);
}
static int
set_supported_hint (MetaX11Display *x11_display)
{
Atom atoms[] = {
#define EWMH_ATOMS_ONLY
#define item(x) x11_display->atom_##x,
#include "x11/atomnames.h"
#undef item
#undef EWMH_ATOMS_ONLY
x11_display->atom__GTK_FRAME_EXTENTS,
x11_display->atom__GTK_SHOW_WINDOW_MENU,
};
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_SUPPORTED,
XA_ATOM,
32, PropModeReplace,
(guchar*) atoms, G_N_ELEMENTS(atoms));
return Success;
}
static int
set_wm_icon_size_hint (MetaX11Display *x11_display)
{
#define N_VALS 6
gulong vals[N_VALS];
/* We've bumped the real icon size up to 96x96, but
* we really should not add these sorts of constraints
* on clients still using the legacy WM_HINTS interface.
*/
#define LEGACY_ICON_SIZE 32
/* min width, min height, max w, max h, width inc, height inc */
vals[0] = LEGACY_ICON_SIZE;
vals[1] = LEGACY_ICON_SIZE;
vals[2] = LEGACY_ICON_SIZE;
vals[3] = LEGACY_ICON_SIZE;
vals[4] = 0;
vals[5] = 0;
#undef LEGACY_ICON_SIZE
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom_WM_ICON_SIZE,
XA_CARDINAL,
32, PropModeReplace, (guchar*) vals, N_VALS);
return Success;
#undef N_VALS
}
static Window
take_manager_selection (MetaX11Display *x11_display,
Window xroot,
Atom manager_atom,
int timestamp,
gboolean should_replace)
{
Window current_owner, new_owner;
current_owner = XGetSelectionOwner (x11_display->xdisplay, manager_atom);
if (current_owner != None)
{
XSetWindowAttributes attrs;
if (should_replace)
{
/* We want to find out when the current selection owner dies */
meta_x11_error_trap_push (x11_display);
attrs.event_mask = StructureNotifyMask;
XChangeWindowAttributes (x11_display->xdisplay, current_owner, CWEventMask, &attrs);
if (meta_x11_error_trap_pop_with_return (x11_display) != Success)
current_owner = None; /* don't wait for it to die later on */
}
else
{
meta_warning (_("Display “%s” already has a window manager; try using the --replace option to replace the current window manager."),
x11_display->name);
return None;
}
}
/* We need SelectionClear and SelectionRequest events on the new owner,
* but those cannot be masked, so we only need NoEventMask.
*/
new_owner = meta_x11_display_create_offscreen_window (x11_display, xroot, NoEventMask);
XSetSelectionOwner (x11_display->xdisplay, manager_atom, new_owner, timestamp);
if (XGetSelectionOwner (x11_display->xdisplay, manager_atom) != new_owner)
{
meta_warning ("Could not acquire selection: %s", XGetAtomName (x11_display->xdisplay, manager_atom));
return None;
}
{
/* Send client message indicating that we are now the selection owner */
XClientMessageEvent ev;
ev.type = ClientMessage;
ev.window = xroot;
ev.message_type = x11_display->atom_MANAGER;
ev.format = 32;
ev.data.l[0] = timestamp;
ev.data.l[1] = manager_atom;
XSendEvent (x11_display->xdisplay, xroot, False, StructureNotifyMask, (XEvent *) &ev);
}
/* Wait for old window manager to go away */
if (current_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 (x11_display->xdisplay, current_owner, StructureNotifyMask, &event);
while (event.type != DestroyNotify);
}
return new_owner;
}
/* Create the leader window here. Set its properties and
* use the timestamp from one of the PropertyNotify events
* that will follow.
*/
static void
init_leader_window (MetaX11Display *x11_display,
guint32 *timestamp)
{
gulong data[1];
XEvent event;
/* We only care about the PropertyChangeMask in the next 30 or so lines of
* code. Note that gdk will at some point unset the PropertyChangeMask for
* this window, so we can't rely on it still being set later. See bug
* 354213 for details.
*/
x11_display->leader_window =
meta_x11_display_create_offscreen_window (x11_display,
x11_display->xroot,
PropertyChangeMask);
meta_prop_set_utf8_string_hint (x11_display,
x11_display->leader_window,
x11_display->atom__NET_WM_NAME,
net_wm_name);
meta_prop_set_utf8_string_hint (x11_display,
x11_display->leader_window,
x11_display->atom__GNOME_WM_KEYBINDINGS,
gnome_wm_keybindings);
meta_prop_set_utf8_string_hint (x11_display,
x11_display->leader_window,
x11_display->atom__MUTTER_VERSION,
VERSION);
data[0] = x11_display->leader_window;
XChangeProperty (x11_display->xdisplay,
x11_display->leader_window,
x11_display->atom__NET_SUPPORTING_WM_CHECK,
XA_WINDOW,
32, PropModeReplace, (guchar*) data, 1);
XWindowEvent (x11_display->xdisplay,
x11_display->leader_window,
PropertyChangeMask,
&event);
if (timestamp)
*timestamp = event.xproperty.time;
/* Make it painfully clear that we can't rely on PropertyNotify events on
* this window, as per bug 354213.
*/
XSelectInput (x11_display->xdisplay,
x11_display->leader_window,
NoEventMask);
}
static void
init_event_masks (MetaX11Display *x11_display)
{
long event_mask;
unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 };
XIEventMask mask = { XIAllMasterDevices, sizeof (mask_bits), mask_bits };
XISetMask (mask.mask, XI_Enter);
XISetMask (mask.mask, XI_Leave);
XISetMask (mask.mask, XI_FocusIn);
XISetMask (mask.mask, XI_FocusOut);
#ifdef HAVE_XI23
if (META_X11_DISPLAY_HAS_XINPUT_23 (x11_display))
{
XISetMask (mask.mask, XI_BarrierHit);
XISetMask (mask.mask, XI_BarrierLeave);
}
#endif /* HAVE_XI23 */
XISelectEvents (x11_display->xdisplay, x11_display->xroot, &mask, 1);
event_mask = (SubstructureRedirectMask | SubstructureNotifyMask |
StructureNotifyMask | ColormapChangeMask | PropertyChangeMask);
XSelectInput (x11_display->xdisplay, x11_display->xroot, event_mask);
}
static void
set_active_workspace_hint (MetaWorkspaceManager *workspace_manager,
MetaX11Display *x11_display)
{
unsigned long data[1];
/* this is because we destroy the spaces in order,
* so we always end up setting a current desktop of
* 0 when closing a screen, so lose the current desktop
* on restart. By doing this we keep the current
* desktop on restart.
*/
if (x11_display->display->closing > 0)
return;
data[0] = meta_workspace_index (workspace_manager->active_workspace);
meta_verbose ("Setting _NET_CURRENT_DESKTOP to %lu\n", data[0]);
meta_x11_error_trap_push (x11_display);
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_CURRENT_DESKTOP,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 1);
meta_x11_error_trap_pop (x11_display);
}
static void
set_number_of_spaces_hint (MetaWorkspaceManager *workspace_manager,
GParamSpec *pspec,
gpointer user_data)
{
MetaX11Display *x11_display = user_data;
unsigned long data[1];
if (x11_display->display->closing > 0)
return;
data[0] = meta_workspace_manager_get_n_workspaces (workspace_manager);
meta_verbose ("Setting _NET_NUMBER_OF_DESKTOPS to %lu\n", data[0]);
meta_x11_error_trap_push (x11_display);
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_NUMBER_OF_DESKTOPS,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 1);
meta_x11_error_trap_pop (x11_display);
}
static void
set_showing_desktop_hint (MetaWorkspaceManager *workspace_manager,
MetaX11Display *x11_display)
{
unsigned long data[1];
data[0] = workspace_manager->active_workspace->showing_desktop ? 1 : 0;
meta_x11_error_trap_push (x11_display);
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_SHOWING_DESKTOP,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 1);
meta_x11_error_trap_pop (x11_display);
}
static void
set_workspace_names (MetaX11Display *x11_display)
{
MetaWorkspaceManager *workspace_manager;
GString *flattened;
int i;
int n_spaces;
workspace_manager = x11_display->display->workspace_manager;
/* flatten to nul-separated list */
n_spaces = meta_workspace_manager_get_n_workspaces (workspace_manager);
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_x11_error_trap_push (x11_display);
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_DESKTOP_NAMES,
x11_display->atom_UTF8_STRING,
8, PropModeReplace,
(unsigned char *)flattened->str, flattened->len);
meta_x11_error_trap_pop (x11_display);
g_string_free (flattened, TRUE);
}
static void
set_work_area_hint (MetaDisplay *display,
MetaX11Display *x11_display)
{
MetaWorkspaceManager *workspace_manager = display->workspace_manager;
int num_workspaces;
GList *l;
unsigned long *data, *tmp;
MetaRectangle area;
num_workspaces = meta_workspace_manager_get_n_workspaces (workspace_manager);
data = g_new (unsigned long, num_workspaces * 4);
tmp = data;
for (l = workspace_manager->workspaces; l; l = l->next)
{
MetaWorkspace *workspace = l->data;
meta_workspace_get_work_area_all_monitors (workspace, &area);
tmp[0] = area.x;
tmp[1] = area.y;
tmp[2] = area.width;
tmp[3] = area.height;
tmp += 4;
}
meta_x11_error_trap_push (x11_display);
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_WORKAREA,
XA_CARDINAL, 32, PropModeReplace,
(guchar*) data, num_workspaces*4);
meta_x11_error_trap_pop (x11_display);
g_free (data);
}
/**
* meta_set_wm_name: (skip)
* @wm_name: value for _NET_WM_NAME
*
* Set the value to use for the _NET_WM_NAME property. To take effect,
* it is necessary to call this function before meta_init().
*/
void
meta_set_wm_name (const char *wm_name)
{
g_return_if_fail (meta_get_display () == NULL);
net_wm_name = wm_name;
}
/**
* meta_set_gnome_wm_keybindings: (skip)
* @wm_keybindings: value for _GNOME_WM_KEYBINDINGS
*
* Set the value to use for the _GNOME_WM_KEYBINDINGS property. To take
* effect, it is necessary to call this function before meta_init().
*/
void
meta_set_gnome_wm_keybindings (const char *wm_keybindings)
{
g_return_if_fail (meta_get_display () == NULL);
gnome_wm_keybindings = wm_keybindings;
}
gboolean
meta_x11_init_gdk_display (GError **error)
{
const char *xdisplay_name;
GdkDisplay *gdk_display;
const char *gdk_gl_env = NULL;
Display *xdisplay;
xdisplay_name = g_getenv ("DISPLAY");
if (!xdisplay_name)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Unable to open display, DISPLAY not set");
return FALSE;
}
gdk_set_allowed_backends ("x11");
gdk_gl_env = g_getenv ("GDK_GL");
g_setenv ("GDK_GL", "disable", TRUE);
gdk_parse_args (NULL, NULL);
if (!gtk_parse_args (NULL, NULL))
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to initialize gtk");
return FALSE;
}
gdk_display = gdk_display_open (xdisplay_name);
if (!gdk_display)
{
meta_warning (_("Failed to initialize GDK\n"));
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to initialize GDK");
return FALSE;
}
if (gdk_gl_env)
g_setenv("GDK_GL", gdk_gl_env, TRUE);
else
unsetenv("GDK_GL");
/* We need to be able to fully trust that the window and monitor sizes
that Gdk reports corresponds to the X ones, so we disable the automatic
scale handling */
gdk_x11_display_set_window_scale (gdk_display, 1);
meta_verbose ("Opening display '%s'\n", XDisplayName (NULL));
xdisplay = GDK_DISPLAY_XDISPLAY (gdk_display);
if (xdisplay == NULL)
{
meta_warning (_("Failed to open X Window System display “%s”\n"),
XDisplayName (NULL));
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to open X11 display");
gdk_display_close (gdk_display);
return FALSE;
}
prepared_gdk_display = gdk_display;
return TRUE;
}
/**
* meta_x11_display_new:
*
* Opens a new X11 display, sets it up, initialises all the X extensions
* we will need.
*
* Returns: #MetaX11Display if the display was opened successfully,
* and %NULL otherwise-- that is, if the display doesn't exist or
* it already has a window manager, and sets the error appropriately.
*/
MetaX11Display *
meta_x11_display_new (MetaDisplay *display, GError **error)
{
MetaX11Display *x11_display;
Display *xdisplay;
Screen *xscreen;
Window xroot;
int i, number;
Window new_wm_sn_owner;
gboolean replace_current_wm;
Atom wm_sn_atom;
char buf[128];
guint32 timestamp;
MetaWorkspace *current_workspace;
uint32_t current_workspace_index = 0;
Atom atom_restart_helper;
Window restart_helper_window = None;
GdkDisplay *gdk_display;
MetaBackend *backend = meta_get_backend ();
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
/* A list of all atom names, so that we can intern them in one go. */
const char *atom_names[] = {
#define item(x) #x,
#include "x11/atomnames.h"
#undef item
};
Atom atoms[G_N_ELEMENTS(atom_names)];
g_assert (prepared_gdk_display);
gdk_display = g_steal_pointer (&prepared_gdk_display);
#ifdef HAVE_WAYLAND
if (meta_is_wayland_compositor ())
meta_xwayland_complete_init (display);
#endif
xdisplay = GDK_DISPLAY_XDISPLAY (gdk_display);
if (meta_is_syncing ())
XSynchronize (xdisplay, True);
replace_current_wm = meta_get_replace_current_wm ();
/* According to _gdk_x11_display_open (), this will be returned
* by gdk_display_get_default_screen ()
*/
number = DefaultScreen (xdisplay);
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, XDisplayName (NULL));
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to open default X11 screen");
XFlush (xdisplay);
XCloseDisplay (xdisplay);
gdk_display_close (gdk_display);
return NULL;
}
xscreen = ScreenOfDisplay (xdisplay, number);
atom_restart_helper = XInternAtom (xdisplay, "_MUTTER_RESTART_HELPER", False);
restart_helper_window = XGetSelectionOwner (xdisplay, atom_restart_helper);
if (restart_helper_window)
meta_set_is_restart (TRUE);
x11_display = g_object_new (META_TYPE_X11_DISPLAY, NULL);
x11_display->gdk_display = gdk_display;
x11_display->display = display;
/* here we use XDisplayName which is what the user
* probably put in, vs. DisplayString(display) which is
* canonicalized by XOpenDisplay()
*/
x11_display->xdisplay = xdisplay;
x11_display->xroot = xroot;
x11_display->name = g_strdup (XDisplayName (NULL));
x11_display->screen_name = get_screen_name (xdisplay, number);
x11_display->default_xvisual = DefaultVisualOfScreen (xscreen);
x11_display->default_depth = DefaultDepthOfScreen (xscreen);
meta_verbose ("Creating %d atoms\n", (int) G_N_ELEMENTS (atom_names));
XInternAtoms (xdisplay, (char **)atom_names, G_N_ELEMENTS (atom_names),
False, atoms);
i = 0;
#define item(x) x11_display->atom_##x = atoms[i++];
#include "x11/atomnames.h"
#undef item
query_xsync_extension (x11_display);
query_xshape_extension (x11_display);
query_xcomposite_extension (x11_display);
query_xdamage_extension (x11_display);
query_xfixes_extension (x11_display);
query_xi_extension (x11_display);
g_signal_connect_object (display,
"cursor-updated",
G_CALLBACK (update_cursor_theme),
x11_display,
G_CONNECT_SWAPPED);
update_cursor_theme (x11_display);
x11_display->xids = g_hash_table_new (meta_unsigned_long_hash,
meta_unsigned_long_equal);
x11_display->groups_by_leader = NULL;
x11_display->ui = NULL;
x11_display->composite_overlay_window = None;
x11_display->guard_window = None;
x11_display->leader_window = None;
x11_display->timestamp_pinging_window = None;
x11_display->wm_sn_selection_window = None;
x11_display->last_bell_time = 0;
x11_display->focus_serial = 0;
x11_display->server_focus_window = None;
x11_display->server_focus_serial = 0;
x11_display->prop_hooks = NULL;
meta_x11_display_init_window_prop_hooks (x11_display);
x11_display->group_prop_hooks = NULL;
meta_x11_display_init_group_prop_hooks (x11_display);
g_signal_connect_object (monitor_manager,
"monitors-changed-internal",
G_CALLBACK (on_monitors_changed_internal),
x11_display,
0);
init_leader_window (x11_display, &timestamp);
x11_display->timestamp = timestamp;
/* Make a little window used only for pinging the server for timestamps; note
* that meta_create_offscreen_window already selects for PropertyChangeMask.
*/
x11_display->timestamp_pinging_window =
meta_x11_display_create_offscreen_window (x11_display,
xroot,
PropertyChangeMask);
sprintf (buf, "WM_S%d", number);
wm_sn_atom = XInternAtom (xdisplay, buf, False);
new_wm_sn_owner = take_manager_selection (x11_display, xroot, wm_sn_atom, timestamp, replace_current_wm);
if (new_wm_sn_owner == None)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to acquire window manager ownership");
g_object_run_dispose (G_OBJECT (x11_display));
g_clear_object (&x11_display);
return NULL;
}
x11_display->wm_sn_selection_window = new_wm_sn_owner;
x11_display->wm_sn_atom = wm_sn_atom;
x11_display->wm_sn_timestamp = timestamp;
init_event_masks (x11_display);
/* Select for cursor changes so the cursor tracker is up to date. */
XFixesSelectCursorInput (xdisplay, xroot, XFixesDisplayCursorNotifyMask);
/* If we're a Wayland compositor, then we don't grab the COW, since it
* will map it. */
if (!meta_is_wayland_compositor ())
x11_display->composite_overlay_window = XCompositeGetOverlayWindow (xdisplay, xroot);
/* Now that we've gotten taken a reference count on the COW, we
* can close the helper that is holding on to it */
if (meta_is_restart ())
XSetSelectionOwner (xdisplay, atom_restart_helper, None, META_CURRENT_TIME);
/* Handle creating a no_focus_window for this screen */
x11_display->no_focus_window =
meta_x11_display_create_offscreen_window (x11_display,
xroot,
FocusChangeMask|KeyPressMask|KeyReleaseMask);
XMapWindow (xdisplay, x11_display->no_focus_window);
/* Done with no_focus_window stuff */
meta_x11_display_init_events (x11_display);
set_wm_icon_size_hint (x11_display);
set_supported_hint (x11_display);
set_wm_check_hint (x11_display);
set_desktop_viewport_hint (x11_display);
set_desktop_geometry_hint (x11_display);
x11_display->ui = meta_ui_new (x11_display);
x11_display->keys_grabbed = FALSE;
meta_x11_display_grab_keys (x11_display);
meta_x11_display_update_workspace_layout (x11_display);
/* Get current workspace */
if (meta_prop_get_cardinal (x11_display,
x11_display->xroot,
x11_display->atom__NET_CURRENT_DESKTOP,
&current_workspace_index))
{
meta_verbose ("Read existing _NET_CURRENT_DESKTOP = %d\n",
(int) current_workspace_index);
/* Switch to the _NET_CURRENT_DESKTOP workspace */
current_workspace = meta_workspace_manager_get_workspace_by_index (display->workspace_manager,
current_workspace_index);
if (current_workspace != NULL)
meta_workspace_activate (current_workspace, timestamp);
}
else
{
meta_verbose ("No _NET_CURRENT_DESKTOP present\n");
}
if (meta_prefs_get_dynamic_workspaces ())
{
int num = 0;
int n_items = 0;
uint32_t *list = NULL;
if (meta_prop_get_cardinal_list (x11_display,
x11_display->xroot,
x11_display->atom__NET_NUMBER_OF_DESKTOPS,
&list, &n_items))
{
num = list[0];
meta_XFree (list);
}
if (num > meta_workspace_manager_get_n_workspaces (display->workspace_manager))
meta_workspace_manager_update_num_workspaces (display->workspace_manager, timestamp, num);
}
set_active_workspace_hint (display->workspace_manager, x11_display);
g_signal_connect_object (display->workspace_manager, "active-workspace-changed",
G_CALLBACK (set_active_workspace_hint),
x11_display, 0);
set_number_of_spaces_hint (display->workspace_manager, NULL, x11_display);
g_signal_connect_object (display->workspace_manager, "notify::n-workspaces",
G_CALLBACK (set_number_of_spaces_hint),
x11_display, 0);
set_showing_desktop_hint (display->workspace_manager, x11_display);
g_signal_connect_object (display->workspace_manager, "showing-desktop-changed",
G_CALLBACK (set_showing_desktop_hint),
x11_display, 0);
set_workspace_names (x11_display);
meta_prefs_add_listener (prefs_changed_callback, x11_display);
set_work_area_hint (display, x11_display);
g_signal_connect_object (display, "workareas-changed",
G_CALLBACK (set_work_area_hint),
x11_display, 0);
init_x11_bell (x11_display);
g_signal_connect_object (display->bell, "is-audible-changed",
G_CALLBACK (on_is_audible_changed),
x11_display, 0);
set_x11_bell_is_audible (x11_display, meta_prefs_bell_is_audible ());
return x11_display;
}
int
meta_x11_display_get_screen_number (MetaX11Display *x11_display)
{
return DefaultScreen (x11_display->xdisplay);
}
/**
* meta_x11_display_get_xdisplay: (skip)
* @x11_display: a #MetaX11Display
*
*/
Display *
meta_x11_display_get_xdisplay (MetaX11Display *x11_display)
{
return x11_display->xdisplay;
}
/**
* meta_x11_display_get_xroot: (skip)
* @x11_display: A #MetaX11Display
*
*/
Window
meta_x11_display_get_xroot (MetaX11Display *x11_display)
{
return x11_display->xroot;
}
/**
* meta_x11_display_get_xinput_opcode: (skip)
* @x11_display: a #MetaX11Display
*
*/
int
meta_x11_display_get_xinput_opcode (MetaX11Display *x11_display)
{
return x11_display->xinput_opcode;
}
int
meta_x11_display_get_damage_event_base (MetaX11Display *x11_display)
{
return x11_display->damage_event_base;
}
int
meta_x11_display_get_shape_event_base (MetaX11Display *x11_display)
{
return x11_display->shape_event_base;
}
gboolean
meta_x11_display_has_shape (MetaX11Display *x11_display)
{
return META_X11_DISPLAY_HAS_SHAPE (x11_display);
}
Window
meta_x11_display_create_offscreen_window (MetaX11Display *x11_display,
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 (x11_display->xdisplay,
parent,
-100, -100, 1, 1,
0,
CopyFromParent,
CopyFromParent,
(Visual *)CopyFromParent,
CWOverrideRedirect | CWEventMask,
&attrs);
}
Cursor
meta_x11_display_create_x_cursor (MetaX11Display *x11_display,
MetaCursor cursor)
{
return meta_create_x_cursor (x11_display->xdisplay, cursor);
}
static char *
get_screen_name (Display *xdisplay,
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 (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;
}
void
meta_x11_display_reload_cursor (MetaX11Display *x11_display)
{
Cursor xcursor;
MetaCursor cursor = x11_display->display->current_cursor;
/* Set a cursor for X11 applications that don't specify their own */
xcursor = meta_x11_display_create_x_cursor (x11_display, cursor);
XDefineCursor (x11_display->xdisplay, x11_display->xroot, xcursor);
XFlush (x11_display->xdisplay);
if (xcursor)
XFreeCursor (x11_display->xdisplay, xcursor);
}
static void
set_cursor_theme (Display *xdisplay)
{
MetaBackend *backend = meta_get_backend ();
MetaSettings *settings = meta_backend_get_settings (backend);
int scale;
scale = meta_settings_get_ui_scaling_factor (settings);
XcursorSetTheme (xdisplay, meta_prefs_get_cursor_theme ());
XcursorSetDefaultSize (xdisplay, meta_prefs_get_cursor_size () * scale);
}
static void
update_cursor_theme (MetaX11Display *x11_display)
{
MetaBackend *backend = meta_get_backend ();
set_cursor_theme (x11_display->xdisplay);
meta_x11_display_reload_cursor (x11_display);
if (META_IS_BACKEND_X11 (backend))
{
MetaBackendX11 *backend_x11 = META_BACKEND_X11 (backend);
Display *xdisplay = meta_backend_x11_get_xdisplay (backend_x11);
set_cursor_theme (xdisplay);
meta_backend_x11_reload_cursor (backend_x11);
}
}
MetaWindow *
meta_x11_display_lookup_x_window (MetaX11Display *x11_display,
Window xwindow)
{
return g_hash_table_lookup (x11_display->xids, &xwindow);
}
void
meta_x11_display_register_x_window (MetaX11Display *x11_display,
Window *xwindowp,
MetaWindow *window)
{
g_return_if_fail (g_hash_table_lookup (x11_display->xids, xwindowp) == NULL);
g_hash_table_insert (x11_display->xids, xwindowp, window);
}
void
meta_x11_display_unregister_x_window (MetaX11Display *x11_display,
Window xwindow)
{
g_return_if_fail (g_hash_table_lookup (x11_display->xids, &xwindow) != NULL);
g_hash_table_remove (x11_display->xids, &xwindow);
}
/* We store sync alarms in the window ID hash table, because they are
* just more types of XIDs in the same global space, but we have
* typesafe functions to register/unregister for readability.
*/
MetaWindow *
meta_x11_display_lookup_sync_alarm (MetaX11Display *x11_display,
XSyncAlarm alarm)
{
return g_hash_table_lookup (x11_display->xids, &alarm);
}
void
meta_x11_display_register_sync_alarm (MetaX11Display *x11_display,
XSyncAlarm *alarmp,
MetaWindow *window)
{
g_return_if_fail (g_hash_table_lookup (x11_display->xids, alarmp) == NULL);
g_hash_table_insert (x11_display->xids, alarmp, window);
}
void
meta_x11_display_unregister_sync_alarm (MetaX11Display *x11_display,
XSyncAlarm alarm)
{
g_return_if_fail (g_hash_table_lookup (x11_display->xids, &alarm) != NULL);
g_hash_table_remove (x11_display->xids, &alarm);
}
void
meta_x11_display_set_alarm_filter (MetaX11Display *x11_display,
MetaAlarmFilter filter,
gpointer data)
{
g_return_if_fail (filter == NULL || x11_display->alarm_filter == NULL);
x11_display->alarm_filter = filter;
x11_display->alarm_filter_data = data;
}
/* The guard window allows us to leave minimized windows mapped so
* that compositor code may provide live previews of them.
* Instead of being unmapped/withdrawn, they get pushed underneath
* the guard window. We also select events on the guard window, which
* should effectively be forwarded to events on the background actor,
* providing that the scene graph is set up correctly.
*/
static Window
create_guard_window (MetaX11Display *x11_display)
{
XSetWindowAttributes attributes;
Window guard_window;
gulong create_serial;
int display_width, display_height;
meta_display_get_size (x11_display->display,
&display_width,
&display_height);
attributes.event_mask = NoEventMask;
attributes.override_redirect = True;
/* We have to call record_add() after we have the new window ID,
* so save the serial for the CreateWindow request until then */
create_serial = XNextRequest (x11_display->xdisplay);
guard_window =
XCreateWindow (x11_display->xdisplay,
x11_display->xroot,
0, /* x */
0, /* y */
display_width,
display_height,
0, /* border width */
0, /* depth */
InputOnly, /* class */
CopyFromParent, /* visual */
CWEventMask | CWOverrideRedirect,
&attributes);
/* https://bugzilla.gnome.org/show_bug.cgi?id=710346 */
XStoreName (x11_display->xdisplay, guard_window, "mutter guard window");
{
if (!meta_is_wayland_compositor ())
{
MetaBackendX11 *backend = META_BACKEND_X11 (meta_get_backend ());
Display *backend_xdisplay = meta_backend_x11_get_xdisplay (backend);
unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 };
XIEventMask mask = { XIAllMasterDevices, sizeof (mask_bits), mask_bits };
XISetMask (mask.mask, XI_ButtonPress);
XISetMask (mask.mask, XI_ButtonRelease);
XISetMask (mask.mask, XI_Motion);
/* Sync on the connection we created the window on to
* make sure it's created before we select on it on the
* backend connection. */
XSync (x11_display->xdisplay, False);
XISelectEvents (backend_xdisplay, guard_window, &mask, 1);
}
}
meta_stack_tracker_record_add (x11_display->display->stack_tracker,
guard_window,
create_serial);
meta_stack_tracker_lower (x11_display->display->stack_tracker,
guard_window);
XMapWindow (x11_display->xdisplay, guard_window);
return guard_window;
}
void
meta_x11_display_create_guard_window (MetaX11Display *x11_display)
{
if (x11_display->guard_window == None)
x11_display->guard_window = create_guard_window (x11_display);
}
static void
on_monitors_changed_internal (MetaMonitorManager *monitor_manager,
MetaX11Display *x11_display)
{
int display_width, display_height;
meta_monitor_manager_get_screen_size (monitor_manager,
&display_width,
&display_height);
set_desktop_geometry_hint (x11_display);
/* Resize the guard window to fill the screen again. */
if (x11_display->guard_window != None)
{
XWindowChanges changes;
changes.x = 0;
changes.y = 0;
changes.width = display_width;
changes.height = display_height;
XConfigureWindow (x11_display->xdisplay,
x11_display->guard_window,
CWX | CWY | CWWidth | CWHeight,
&changes);
}
x11_display->has_xinerama_indices = FALSE;
}
void
meta_x11_display_set_cm_selection (MetaX11Display *x11_display)
{
char selection[32];
Atom a;
guint32 timestamp;
timestamp = meta_x11_display_get_current_time_roundtrip (x11_display);
g_snprintf (selection, sizeof (selection), "_NET_WM_CM_S%d",
DefaultScreen (x11_display->xdisplay));
a = XInternAtom (x11_display->xdisplay, selection, False);
x11_display->wm_cm_selection_window = take_manager_selection (x11_display, x11_display->xroot, a, timestamp, TRUE);
}
static Bool
find_timestamp_predicate (Display *xdisplay,
XEvent *ev,
XPointer arg)
{
MetaX11Display *x11_display = (MetaX11Display *) arg;
return (ev->type == PropertyNotify &&
ev->xproperty.atom == x11_display->atom__MUTTER_TIMESTAMP_PING);
}
/* Get a timestamp, even if it means a roundtrip */
guint32
meta_x11_display_get_current_time_roundtrip (MetaX11Display *x11_display)
{
guint32 timestamp;
timestamp = meta_display_get_current_time (x11_display->display);
if (timestamp == META_CURRENT_TIME)
{
XEvent property_event;
XChangeProperty (x11_display->xdisplay,
x11_display->timestamp_pinging_window,
x11_display->atom__MUTTER_TIMESTAMP_PING,
XA_STRING, 8, PropModeAppend, NULL, 0);
XIfEvent (x11_display->xdisplay,
&property_event,
find_timestamp_predicate,
(XPointer) x11_display);
timestamp = property_event.xproperty.time;
}
meta_display_sanity_check_timestamps (x11_display->display, timestamp);
return timestamp;
}
/**
* meta_x11_display_xwindow_is_a_no_focus_window:
* @x11_display: A #MetaX11Display
* @xwindow: An X11 window
*
* Returns: %TRUE iff window is one of mutter's internal "no focus" windows
* which will have the focus when there is no actual client window focused.
*/
gboolean
meta_x11_display_xwindow_is_a_no_focus_window (MetaX11Display *x11_display,
Window xwindow)
{
return xwindow == x11_display->no_focus_window;
}
void
meta_x11_display_increment_event_serial (MetaX11Display *x11_display)
{
/* We just make some random X request */
XDeleteProperty (x11_display->xdisplay,
x11_display->leader_window,
x11_display->atom__MOTIF_WM_HINTS);
}
void
meta_x11_display_update_active_window_hint (MetaX11Display *x11_display)
{
MetaWindow *focus_window = x11_display->display->focus_window;
gulong data[1];
if (x11_display->display->closing)
return; /* Leave old value for a replacement */
if (focus_window)
data[0] = focus_window->xwindow;
else
data[0] = None;
meta_x11_error_trap_push (x11_display);
XChangeProperty (x11_display->xdisplay,
x11_display->xroot,
x11_display->atom__NET_ACTIVE_WINDOW,
XA_WINDOW,
32, PropModeReplace, (guchar*) data, 1);
meta_x11_error_trap_pop (x11_display);
}
static void
request_xserver_input_focus_change (MetaX11Display *x11_display,
MetaWindow *meta_window,
Window xwindow,
guint32 timestamp)
{
gulong serial;
if (meta_display_timestamp_too_old (x11_display->display, &timestamp))
return;
meta_x11_error_trap_push (x11_display);
/* In order for mutter to know that the focus request succeeded, we track
* the serial of the "focus request" we made, but if we take the serial
* of the XSetInputFocus request, then there's no way to determine the
* difference between focus events as a result of the SetInputFocus and
* focus events that other clients send around the same time. Ensure that
* we know which is which by making two requests that the server will
* process at the same time.
*/
XGrabServer (x11_display->xdisplay);
serial = XNextRequest (x11_display->xdisplay);
XSetInputFocus (x11_display->xdisplay,
xwindow,
RevertToPointerRoot,
timestamp);
XChangeProperty (x11_display->xdisplay,
x11_display->timestamp_pinging_window,
x11_display->atom__MUTTER_FOCUS_SET,
XA_STRING, 8, PropModeAppend, NULL, 0);
XUngrabServer (x11_display->xdisplay);
XFlush (x11_display->xdisplay);
meta_display_update_focus_window (x11_display->display,
meta_window,
xwindow,
serial,
TRUE);
meta_x11_error_trap_pop (x11_display);
x11_display->display->last_focus_time = timestamp;
if (meta_window == NULL || meta_window != x11_display->display->autoraise_window)
meta_display_remove_autoraise_callback (x11_display->display);
}
void
meta_x11_display_set_input_focus_window (MetaX11Display *x11_display,
MetaWindow *window,
gboolean focus_frame,
guint32 timestamp)
{
request_xserver_input_focus_change (x11_display,
window,
focus_frame ? window->frame->xwindow : window->xwindow,
timestamp);
}
void
meta_x11_display_set_input_focus_xwindow (MetaX11Display *x11_display,
Window window,
guint32 timestamp)
{
request_xserver_input_focus_change (x11_display,
NULL,
window,
timestamp);
}
void
meta_x11_display_focus_the_no_focus_window (MetaX11Display *x11_display,
guint32 timestamp)
{
request_xserver_input_focus_change (x11_display,
NULL,
x11_display->no_focus_window,
timestamp);
}
static MetaX11DisplayLogicalMonitorData *
get_x11_display_logical_monitor_data (MetaLogicalMonitor *logical_monitor)
{
return g_object_get_qdata (G_OBJECT (logical_monitor),
quark_x11_display_logical_monitor_data);
}
static MetaX11DisplayLogicalMonitorData *
ensure_x11_display_logical_monitor_data (MetaLogicalMonitor *logical_monitor)
{
MetaX11DisplayLogicalMonitorData *data;
data = get_x11_display_logical_monitor_data (logical_monitor);
if (data)
return data;
data = g_new0 (MetaX11DisplayLogicalMonitorData, 1);
g_object_set_qdata_full (G_OBJECT (logical_monitor),
quark_x11_display_logical_monitor_data,
data,
g_free);
return data;
}
static void
meta_x11_display_ensure_xinerama_indices (MetaX11Display *x11_display)
{
MetaBackend *backend = meta_get_backend ();
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
GList *logical_monitors, *l;
XineramaScreenInfo *infos;
int n_infos, j;
if (x11_display->has_xinerama_indices)
return;
x11_display->has_xinerama_indices = TRUE;
if (!XineramaIsActive (x11_display->xdisplay))
return;
infos = XineramaQueryScreens (x11_display->xdisplay,
&n_infos);
if (n_infos <= 0 || infos == NULL)
{
meta_XFree (infos);
return;
}
logical_monitors =
meta_monitor_manager_get_logical_monitors (monitor_manager);
for (l = logical_monitors; l; l = l->next)
{
MetaLogicalMonitor *logical_monitor = l->data;
for (j = 0; j < n_infos; ++j)
{
if (logical_monitor->rect.x == infos[j].x_org &&
logical_monitor->rect.y == infos[j].y_org &&
logical_monitor->rect.width == infos[j].width &&
logical_monitor->rect.height == infos[j].height)
{
MetaX11DisplayLogicalMonitorData *logical_monitor_data;
logical_monitor_data =
ensure_x11_display_logical_monitor_data (logical_monitor);
logical_monitor_data->xinerama_index = j;
}
}
}
meta_XFree (infos);
}
int
meta_x11_display_logical_monitor_to_xinerama_index (MetaX11Display *x11_display,
MetaLogicalMonitor *logical_monitor)
{
MetaX11DisplayLogicalMonitorData *logical_monitor_data;
g_return_val_if_fail (logical_monitor, -1);
meta_x11_display_ensure_xinerama_indices (x11_display);
logical_monitor_data = get_x11_display_logical_monitor_data (logical_monitor);
return logical_monitor_data->xinerama_index;
}
MetaLogicalMonitor *
meta_x11_display_xinerama_index_to_logical_monitor (MetaX11Display *x11_display,
int xinerama_index)
{
MetaBackend *backend = meta_get_backend ();
MetaMonitorManager *monitor_manager =
meta_backend_get_monitor_manager (backend);
GList *logical_monitors, *l;
meta_x11_display_ensure_xinerama_indices (x11_display);
logical_monitors =
meta_monitor_manager_get_logical_monitors (monitor_manager);
for (l = logical_monitors; l; l = l->next)
{
MetaLogicalMonitor *logical_monitor = l->data;
MetaX11DisplayLogicalMonitorData *logical_monitor_data;
logical_monitor_data =
ensure_x11_display_logical_monitor_data (logical_monitor);
if (logical_monitor_data->xinerama_index == xinerama_index)
return logical_monitor;
}
return NULL;
}
void
meta_x11_display_update_workspace_names (MetaX11Display *x11_display)
{
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 (x11_display,
x11_display->xroot,
x11_display->atom__NET_DESKTOP_NAMES,
&names, &n_names))
{
meta_verbose ("Failed to get workspace names from root window\n");
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);
}
#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_x11_display_update_workspace_layout (MetaX11Display *x11_display)
{
MetaWorkspaceManager *workspace_manager = x11_display->display->workspace_manager;
gboolean vertical_layout = FALSE;
int n_rows = -1;
int n_columns = 1;
MetaDisplayCorner starting_corner = META_DISPLAY_TOPLEFT;
uint32_t *list;
int n_items;
if (workspace_manager->workspace_layout_overridden)
return;
list = NULL;
n_items = 0;
if (meta_prop_get_cardinal_list (x11_display,
x11_display->xroot,
x11_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:
vertical_layout = FALSE;
break;
case _NET_WM_ORIENTATION_VERT:
vertical_layout = 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)
n_rows = rows;
else
n_rows = -1;
if (cols > 0)
n_columns = cols;
else
n_columns = -1;
}
if (n_items == 4)
{
switch (list[3])
{
case _NET_WM_TOPLEFT:
starting_corner = META_DISPLAY_TOPLEFT;
break;
case _NET_WM_TOPRIGHT:
starting_corner = META_DISPLAY_TOPRIGHT;
break;
case _NET_WM_BOTTOMRIGHT:
starting_corner = META_DISPLAY_BOTTOMRIGHT;
break;
case _NET_WM_BOTTOMLEFT:
starting_corner = META_DISPLAY_BOTTOMLEFT;
break;
default:
meta_warning ("Someone set a weird starting corner in _NET_DESKTOP_LAYOUT\n");
break;
}
}
}
else
{
meta_warning ("Someone set _NET_DESKTOP_LAYOUT to %d integers instead of 4 "
"(3 is accepted for backwards compat)\n", n_items);
}
meta_XFree (list);
meta_workspace_manager_update_workspace_layout (workspace_manager,
starting_corner,
vertical_layout,
n_rows,
n_columns);
}
}
static void
prefs_changed_callback (MetaPreference pref,
void *data)
{
MetaX11Display *x11_display = data;
if (pref == META_PREF_WORKSPACE_NAMES)
{
set_workspace_names (x11_display);
}
}
View git blame Copy permalink