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mutter/src/x11/meta-x11-display.c

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/* -*- 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 <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <X11/Xatom.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 "backends/meta-backend-private.h"
#include "backends/x11/meta-backend-x11.h"
#include "core/frame.h"
#include "core/util-private.h"
#include "meta/errors.h"
#include "meta/main.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 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 (MetaDisplay *display,
MetaX11Display *x11_display);
static void update_cursor_theme (MetaX11Display *x11_display);
static void unset_wm_check_hint (MetaX11Display *x11_display);
static void
meta_x11_display_dispose (GObject *object)
{
MetaX11Display *x11_display = META_X11_DISPLAY (object);
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_error_trap_push (x11_display);
XSelectInput (x11_display->xdisplay, x11_display->xroot, 0);
if (meta_error_trap_pop_with_return (x11_display) != Success)
meta_warning ("Could not release screen %d on display \"%s\"\n",
meta_ui_get_screen_number (), x11_display->name);
x11_display->xroot = None;
}
if (x11_display->xdisplay)
{
meta_x11_display_free_events (x11_display);
x11_display->xdisplay = 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)
{
}
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");
}
static void
set_desktop_geometry_hint (MetaX11Display *x11_display)
{
unsigned long data[2];
if (x11_display->display->closing > 0)
return;
data[0] = x11_display->display->rect.width;
data[1] = x11_display->display->rect.height;
meta_verbose ("Setting _NET_DESKTOP_GEOMETRY to %lu, %lu\n", data[0], data[1]);
meta_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_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_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_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_error_trap_push (x11_display);
attrs.event_mask = StructureNotifyMask;
XChangeWindowAttributes (x11_display->xdisplay, current_owner, CWEventMask, &attrs);
if (meta_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);
}
/**
* 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;
}
/**
* 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;
/* 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)];
meta_verbose ("Opening display '%s'\n", XDisplayName (NULL));
xdisplay = meta_ui_get_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");
return NULL;
}
#ifdef HAVE_WAYLAND
if (meta_is_wayland_compositor ())
meta_xwayland_complete_init ();
#endif
if (meta_is_syncing ())
XSynchronize (xdisplay, True);
replace_current_wm = meta_get_replace_current_wm ();
number = meta_ui_get_screen_number ();
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);
return NULL;
}
xscreen = ScreenOfDisplay (xdisplay, number);
x11_display = g_object_new (META_TYPE_X11_DISPLAY, NULL);
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->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->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 (display,
"monitors-changed",
G_CALLBACK (on_monitors_changed),
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 */
meta_restart_finish ();
/* 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);
return x11_display;
}
int
meta_x11_display_get_screen_number (MetaX11Display *x11_display)
{
return meta_ui_get_screen_number ();
}
/**
* 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);
XFreeCursor (x11_display->xdisplay, xcursor);
}
static void
set_cursor_theme (Display *xdisplay)
{
XcursorSetTheme (xdisplay, meta_prefs_get_cursor_theme ());
XcursorSetDefaultSize (xdisplay, meta_prefs_get_cursor_size ());
}
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);
}
}
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;
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 */
x11_display->display->rect.width,
x11_display->display->rect.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 (MetaDisplay *display,
MetaX11Display *x11_display)
{
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->rect.width;
changes.height = display->rect.height;
XConfigureWindow (x11_display->xdisplay,
x11_display->guard_window,
CWX | CWY | CWWidth | CWHeight,
&changes);
}
}
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",
meta_ui_get_screen_number ());
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 == CurrentTime)
{
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_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_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_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_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);
}
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