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mutter-performance-source/src/x11/events.c
Carlos Garnacho bec8a5860a core,wayland,compositor,x11: Migrate to MetaWindowDrag 
Flip the switch in using MetaWindowDrag, leaving display grab
ops and a bunch other code unused. Some places checked the grab op
and/or window in complex ways, others just checked for grab existence
and should now look for clutter ones, and others already were already
doing this in addition.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2683>
2023-01-30 10:56:29 +00:00

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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/>.
*/
#include "config.h"
#include "x11/events.h"
#include <X11/Xatom.h>
#include <X11/XKBlib.h>
#include <X11/extensions/Xdamage.h>
#include <X11/extensions/shape.h>
#include "backends/meta-cursor-tracker-private.h"
#include "backends/x11/meta-backend-x11.h"
#include "backends/x11/meta-cursor-tracker-x11.h"
#include "compositor/meta-compositor-x11.h"
#include "cogl/cogl.h"
#include "core/bell.h"
#include "core/display-private.h"
#include "core/meta-workspace-manager-private.h"
#include "core/window-private.h"
#include "core/workspace-private.h"
#include "meta/meta-backend.h"
#include "meta/meta-context.h"
#include "meta/meta-x11-errors.h"
#include "x11/meta-startup-notification-x11.h"
#include "x11/meta-x11-display-private.h"
#include "x11/meta-x11-selection-private.h"
#include "x11/meta-x11-selection-input-stream-private.h"
#include "x11/meta-x11-selection-output-stream-private.h"
#include "x11/window-x11.h"
#include "x11/window-x11-private.h"
#include "x11/xprops.h"
#ifdef HAVE_XWAYLAND
#include "wayland/meta-wayland-private.h"
#include "wayland/meta-xwayland-private.h"
#include "wayland/meta-xwayland.h"
#endif
static XIEvent *
get_input_event (MetaX11Display *x11_display,
XEvent *event)
{
if (event->type == GenericEvent &&
event->xcookie.extension == x11_display->xinput_opcode)
{
XIEvent *input_event;
/* NB: GDK event filters already have generic events
* allocated, so no need to do XGetEventData() on our own
*/
input_event = (XIEvent *) event->xcookie.data;
switch (input_event->evtype)
{
case XI_Motion:
case XI_ButtonPress:
case XI_ButtonRelease:
if (((XIDeviceEvent *) input_event)->deviceid == META_VIRTUAL_CORE_POINTER_ID)
return input_event;
break;
case XI_KeyPress:
case XI_KeyRelease:
if (((XIDeviceEvent *) input_event)->deviceid == META_VIRTUAL_CORE_KEYBOARD_ID)
return input_event;
break;
case XI_FocusIn:
case XI_FocusOut:
if (((XIEnterEvent *) input_event)->deviceid == META_VIRTUAL_CORE_KEYBOARD_ID)
return input_event;
break;
case XI_Enter:
case XI_Leave:
if (((XIEnterEvent *) input_event)->deviceid == META_VIRTUAL_CORE_POINTER_ID)
return input_event;
break;
case XI_BarrierHit:
case XI_BarrierLeave:
if (((XIBarrierEvent *) input_event)->deviceid == META_VIRTUAL_CORE_POINTER_ID)
return input_event;
break;
default:
break;
}
}
return NULL;
}
static Window
xievent_get_modified_window (MetaX11Display *x11_display,
XIEvent *input_event)
{
switch (input_event->evtype)
{
case XI_Motion:
case XI_ButtonPress:
case XI_ButtonRelease:
case XI_KeyPress:
case XI_KeyRelease:
return ((XIDeviceEvent *) input_event)->event;
case XI_FocusIn:
case XI_FocusOut:
case XI_Enter:
case XI_Leave:
return ((XIEnterEvent *) input_event)->event;
case XI_BarrierHit:
case XI_BarrierLeave:
return ((XIBarrierEvent *) input_event)->event;
}
return None;
}
/* Return the window this has to do with, if any, rather
* than the frame or root window that was selecting
* for substructure
*/
static Window
event_get_modified_window (MetaX11Display *x11_display,
XEvent *event)
{
XIEvent *input_event = get_input_event (x11_display, event);
if (input_event)
return xievent_get_modified_window (x11_display, input_event);
switch (event->type)
{
case KeymapNotify:
case Expose:
case GraphicsExpose:
case NoExpose:
case VisibilityNotify:
case ResizeRequest:
case PropertyNotify:
case SelectionClear:
case SelectionRequest:
case SelectionNotify:
case ColormapNotify:
case ClientMessage:
return event->xany.window;
case CreateNotify:
return event->xcreatewindow.window;
case DestroyNotify:
return event->xdestroywindow.window;
case UnmapNotify:
return event->xunmap.window;
case MapNotify:
return event->xmap.window;
case MapRequest:
return event->xmaprequest.window;
case ReparentNotify:
return event->xreparent.window;
case ConfigureNotify:
return event->xconfigure.window;
case ConfigureRequest:
return event->xconfigurerequest.window;
case GravityNotify:
return event->xgravity.window;
case CirculateNotify:
return event->xcirculate.window;
case CirculateRequest:
return event->xcirculaterequest.window;
case MappingNotify:
return None;
default:
if (META_X11_DISPLAY_HAS_SHAPE (x11_display) &&
event->type == (x11_display->shape_event_base + ShapeNotify))
{
XShapeEvent *sev = (XShapeEvent*) event;
return sev->window;
}
return None;
}
}
static guint32
event_get_time (MetaX11Display *x11_display,
XEvent *event)
{
XIEvent *input_event = get_input_event (x11_display, event);
if (input_event)
return input_event->time;
switch (event->type)
{
case PropertyNotify:
return event->xproperty.time;
case SelectionClear:
case SelectionRequest:
case SelectionNotify:
return event->xselection.time;
case KeymapNotify:
case Expose:
case GraphicsExpose:
case NoExpose:
case MapNotify:
case UnmapNotify:
case VisibilityNotify:
case ResizeRequest:
case ColormapNotify:
case ClientMessage:
case CreateNotify:
case DestroyNotify:
case MapRequest:
case ReparentNotify:
case ConfigureNotify:
case ConfigureRequest:
case GravityNotify:
case CirculateNotify:
case CirculateRequest:
case MappingNotify:
default:
return META_CURRENT_TIME;
}
}
const char*
meta_event_detail_to_string (int d)
{
const char *detail = "???";
switch (d)
{
/* We are an ancestor in the A<->B focus change relationship */
case XINotifyAncestor:
detail = "NotifyAncestor";
break;
case XINotifyDetailNone:
detail = "NotifyDetailNone";
break;
/* We are a descendant in the A<->B focus change relationship */
case XINotifyInferior:
detail = "NotifyInferior";
break;
case XINotifyNonlinear:
detail = "NotifyNonlinear";
break;
case XINotifyNonlinearVirtual:
detail = "NotifyNonlinearVirtual";
break;
case XINotifyPointer:
detail = "NotifyPointer";
break;
case XINotifyPointerRoot:
detail = "NotifyPointerRoot";
break;
case XINotifyVirtual:
detail = "NotifyVirtual";
break;
}
return detail;
}
const char*
meta_event_mode_to_string (int m)
{
const char *mode = "???";
switch (m)
{
case XINotifyNormal:
mode = "NotifyNormal";
break;
case XINotifyGrab:
mode = "NotifyGrab";
break;
case XINotifyUngrab:
mode = "NotifyUngrab";
break;
case XINotifyWhileGrabbed:
mode = "NotifyWhileGrabbed";
break;
}
return mode;
}
G_GNUC_UNUSED static const char*
stack_mode_to_string (int mode)
{
switch (mode)
{
case Above:
return "Above";
case Below:
return "Below";
case TopIf:
return "TopIf";
case BottomIf:
return "BottomIf";
case Opposite:
return "Opposite";
}
return "Unknown";
}
static gint64
sync_value_to_64 (const XSyncValue *value)
{
gint64 v;
v = XSyncValueLow32 (*value);
v |= (((gint64)XSyncValueHigh32 (*value)) << 32);
return v;
}
static const char*
alarm_state_to_string (XSyncAlarmState state)
{
switch (state)
{
case XSyncAlarmActive:
return "Active";
case XSyncAlarmInactive:
return "Inactive";
case XSyncAlarmDestroyed:
return "Destroyed";
default:
return "(unknown)";
}
}
static const char *
get_xi2_event_name (XIEvent *input_event)
{
switch (input_event->evtype)
{
case XI_FocusIn:
return "XI_FocusIn";
case XI_FocusOut:
return "XI_FocusOut";
case XI_Enter:
return "XI_Enter";
case XI_Leave:
return "XI_Leave";
case XI_BarrierHit:
return "XI_BarrierHit";
case XI_BarrierLeave:
return "XI_BarrierLeave";
}
return NULL;
}
static void
meta_spew_xi2_event (MetaX11Display *x11_display,
XIEvent *input_event,
const char **name_p,
char **extra_p)
{
const char *name = NULL;
char *extra = NULL;
XIEnterEvent *enter_event = (XIEnterEvent *) input_event;
name = get_xi2_event_name (input_event);
switch (input_event->evtype)
{
case XI_FocusIn:
case XI_FocusOut:
extra = g_strdup_printf ("detail: %s mode: %s\n",
meta_event_detail_to_string (enter_event->detail),
meta_event_mode_to_string (enter_event->mode));
break;
case XI_Enter:
case XI_Leave:
extra = g_strdup_printf ("win: 0x%lx root: 0x%lx mode: %s detail: %s focus: %d x: %g y: %g",
enter_event->event,
enter_event->root,
meta_event_mode_to_string (enter_event->mode),
meta_event_detail_to_string (enter_event->detail),
enter_event->focus,
enter_event->root_x,
enter_event->root_y);
break;
}
*name_p = name;
*extra_p = extra;
}
static const char *
get_core_event_name (XEvent *event)
{
/* GenericEvent is omitted here, as it's handled separately. */
switch (event->type)
{
case KeyPress:
return "KeyPress";
case KeyRelease:
return "KeyRelease";
case ButtonPress:
return "ButtonPress";
case ButtonRelease:
return "ButtonRelease";
case MotionNotify:
return "MotionNotify";
case EnterNotify:
return "EnterNotify";
case LeaveNotify:
return "LeaveNotify";
case FocusIn:
return "FocusIn";
case FocusOut:
return "FocusOut";
case KeymapNotify:
return "KeymapNotify";
case Expose:
return "Expose";
case GraphicsExpose:
return "GraphicsExpose";
case NoExpose:
return "NoExpose";
case VisibilityNotify:
return "VisibilityNotify";
case CreateNotify:
return "CreateNotify";
case DestroyNotify:
return "DestroyNotify";
case UnmapNotify:
return "UnmapNotify";
case MapNotify:
return "MapNotify";
case MapRequest:
return "MapRequest";
case ReparentNotify:
return "ReparentNotify";
case ConfigureNotify:
return "ConfigureNotify";
case ConfigureRequest:
return "ConfigureRequest";
case GravityNotify:
return "GravityNotify";
case ResizeRequest:
return "ResizeRequest";
case CirculateNotify:
return "CirculateNotify";
case CirculateRequest:
return "CirculateRequest";
case PropertyNotify:
return "PropertyNotify";
case SelectionClear:
return "SelectionClear";
case SelectionRequest:
return "SelectionRequest";
case SelectionNotify:
return "SelectionNotify";
case ColormapNotify:
return "ColormapNotify";
case ClientMessage:
return "ClientMessage";
case MappingNotify:
return "MappingNotify";
}
return NULL;
}
static const char *
get_extension_event_name (MetaX11Display *x11_display,
XEvent *event)
{
if (META_X11_DISPLAY_HAS_XSYNC (x11_display) &&
event->type == (x11_display->xsync_event_base + XSyncAlarmNotify))
return "XSyncAlarmNotify";
if (META_X11_DISPLAY_HAS_SHAPE (x11_display) &&
event->type == (x11_display->shape_event_base + ShapeNotify))
return "ShapeNotify";
if (META_X11_DISPLAY_HAS_DAMAGE (x11_display) &&
event->type == (x11_display->damage_event_base + XDamageNotify))
return "XDamageNotify";
if (event->type == (x11_display->xfixes_event_base + XFixesSelectionNotify))
return "XFixesSelectionNotify";
return NULL;
}
static const char *
get_event_name (MetaX11Display *x11_display,
XEvent *event)
{
const char *name;
XIEvent *input_event;
if (event->type < GenericEvent)
return get_core_event_name (event);
name = get_extension_event_name (x11_display, event);
if (name)
return name;
input_event = get_input_event (x11_display, event);
if (input_event)
{
name = get_xi2_event_name (input_event);
if (name)
return name;
}
return "Unknown event";
}
static void
meta_spew_core_event (MetaX11Display *x11_display,
XEvent *event,
const char **name_p,
char **extra_p)
{
const char *name = NULL;
char *extra = NULL;
name = get_core_event_name (event);
if (!name)
name = get_extension_event_name (x11_display, event);
switch (event->type)
{
case KeymapNotify:
case Expose:
case GraphicsExpose:
case NoExpose:
case VisibilityNotify:
case GravityNotify:
case CirculateNotify:
case CirculateRequest:
case SelectionClear:
case SelectionRequest:
case SelectionNotify:
case ColormapNotify:
break;
case CreateNotify:
extra = g_strdup_printf ("parent: 0x%lx window: 0x%lx",
event->xcreatewindow.parent,
event->xcreatewindow.window);
break;
case DestroyNotify:
extra = g_strdup_printf ("event: 0x%lx window: 0x%lx",
event->xdestroywindow.event,
event->xdestroywindow.window);
break;
case UnmapNotify:
extra = g_strdup_printf ("event: 0x%lx window: 0x%lx from_configure: %d",
event->xunmap.event,
event->xunmap.window,
event->xunmap.from_configure);
break;
case MapNotify:
extra = g_strdup_printf ("event: 0x%lx window: 0x%lx override_redirect: %d",
event->xmap.event,
event->xmap.window,
event->xmap.override_redirect);
break;
case MapRequest:
extra = g_strdup_printf ("window: 0x%lx parent: 0x%lx\n",
event->xmaprequest.window,
event->xmaprequest.parent);
break;
case ReparentNotify:
extra = g_strdup_printf ("window: 0x%lx parent: 0x%lx event: 0x%lx\n",
event->xreparent.window,
event->xreparent.parent,
event->xreparent.event);
break;
case ConfigureNotify:
extra = g_strdup_printf ("x: %d y: %d w: %d h: %d above: 0x%lx override_redirect: %d",
event->xconfigure.x,
event->xconfigure.y,
event->xconfigure.width,
event->xconfigure.height,
event->xconfigure.above,
event->xconfigure.override_redirect);
break;
case ConfigureRequest:
extra = g_strdup_printf ("parent: 0x%lx window: 0x%lx x: %d %sy: %d %sw: %d %sh: %d %sborder: %d %sabove: %lx %sstackmode: %s %s",
event->xconfigurerequest.parent,
event->xconfigurerequest.window,
event->xconfigurerequest.x,
event->xconfigurerequest.value_mask &
CWX ? "" : "(unset) ",
event->xconfigurerequest.y,
event->xconfigurerequest.value_mask &
CWY ? "" : "(unset) ",
event->xconfigurerequest.width,
event->xconfigurerequest.value_mask &
CWWidth ? "" : "(unset) ",
event->xconfigurerequest.height,
event->xconfigurerequest.value_mask &
CWHeight ? "" : "(unset) ",
event->xconfigurerequest.border_width,
event->xconfigurerequest.value_mask &
CWBorderWidth ? "" : "(unset)",
event->xconfigurerequest.above,
event->xconfigurerequest.value_mask &
CWSibling ? "" : "(unset)",
stack_mode_to_string (event->xconfigurerequest.detail),
event->xconfigurerequest.value_mask &
CWStackMode ? "" : "(unset)");
break;
case ResizeRequest:
extra = g_strdup_printf ("width = %d height = %d",
event->xresizerequest.width,
event->xresizerequest.height);
break;
case PropertyNotify:
{
char *str;
const char *state;
meta_x11_error_trap_push (x11_display);
str = XGetAtomName (x11_display->xdisplay,
event->xproperty.atom);
meta_x11_error_trap_pop (x11_display);
if (event->xproperty.state == PropertyNewValue)
state = "PropertyNewValue";
else if (event->xproperty.state == PropertyDelete)
state = "PropertyDelete";
else
state = "???";
extra = g_strdup_printf ("atom: %s state: %s",
str ? str : "(unknown atom)",
state);
meta_XFree (str);
}
break;
case ClientMessage:
{
char *str;
meta_x11_error_trap_push (x11_display);
str = XGetAtomName (x11_display->xdisplay,
event->xclient.message_type);
meta_x11_error_trap_pop (x11_display);
extra = g_strdup_printf ("type: %s format: %d\n",
str ? str : "(unknown atom)",
event->xclient.format);
meta_XFree (str);
}
break;
case MappingNotify:
break;
default:
if (META_X11_DISPLAY_HAS_XSYNC (x11_display) &&
event->type == (x11_display->xsync_event_base + XSyncAlarmNotify))
{
XSyncAlarmNotifyEvent *aevent = (XSyncAlarmNotifyEvent*) event;
extra =
g_strdup_printf ("alarm: 0x%lx"
" counter_value: %" G_GINT64_FORMAT
" alarm_value: %" G_GINT64_FORMAT
" time: %u alarm state: %s",
aevent->alarm,
(gint64) sync_value_to_64 (&aevent->counter_value),
(gint64) sync_value_to_64 (&aevent->alarm_value),
(unsigned int)aevent->time,
alarm_state_to_string (aevent->state));
}
else
{
if (META_X11_DISPLAY_HAS_SHAPE (x11_display) &&
event->type == (x11_display->shape_event_base + ShapeNotify))
{
XShapeEvent *sev = (XShapeEvent*) event;
extra =
g_strdup_printf ("kind: %s "
"x: %d y: %d w: %u h: %u "
"shaped: %d",
sev->kind == ShapeBounding ?
"ShapeBounding" :
(sev->kind == ShapeClip ?
"ShapeClip" : "(unknown)"),
sev->x, sev->y, sev->width, sev->height,
sev->shaped);
}
else
{
extra = g_strdup_printf ("type: %d", event->xany.type);
}
}
break;
}
*name_p = name;
*extra_p = extra;
}
static char *
meta_spew_event (MetaX11Display *x11_display,
XEvent *event)
{
const char *name = NULL;
char *extra = NULL;
char *winname;
char *ret;
XIEvent *input_event;
input_event = get_input_event (x11_display, event);
if (input_event)
meta_spew_xi2_event (x11_display, input_event, &name, &extra);
else
meta_spew_core_event (x11_display, event, &name, &extra);
if (event->xany.window == x11_display->xroot)
winname = g_strdup_printf ("root");
else
winname = g_strdup_printf ("0x%lx", event->xany.window);
ret = g_strdup_printf ("%s on %s%s %s %sserial %lu", name, winname,
extra ? ":" : "", extra ? extra : "",
event->xany.send_event ? "SEND " : "",
event->xany.serial);
g_free (winname);
g_free (extra);
return ret;
}
G_GNUC_UNUSED static void
meta_spew_event_print (MetaX11Display *x11_display,
XEvent *event)
{
char *event_str;
/* filter overnumerous events */
if (event->type == Expose || event->type == MotionNotify ||
event->type == NoExpose)
return;
if (event->type == (x11_display->damage_event_base + XDamageNotify))
return;
if (event->type == (x11_display->xsync_event_base + XSyncAlarmNotify))
return;
if (event->type == PropertyNotify &&
event->xproperty.atom == x11_display->atom__NET_WM_USER_TIME)
return;
event_str = meta_spew_event (x11_display, event);
g_print ("%s\n", event_str);
g_free (event_str);
}
static gboolean
handle_window_focus_event (MetaX11Display *x11_display,
MetaWindow *window,
XIEnterEvent *event,
unsigned long serial)
{
MetaDisplay *display = x11_display->display;
MetaWindow *focus_window;
#ifdef WITH_VERBOSE_MODE
const char *window_type;
/* Note the event can be on either the window or the frame,
* we focus the frame for shaded windows
*/
if (window)
{
if (event->event == window->xwindow)
window_type = "client window";
else if (window->frame && event->event == window->frame->xwindow)
window_type = "frame window";
else
window_type = "unknown client window";
}
else if (meta_x11_display_xwindow_is_a_no_focus_window (x11_display,
event->event))
window_type = "no_focus_window";
else if (event->event == x11_display->xroot)
window_type = "root window";
else
window_type = "unknown window";
meta_topic (META_DEBUG_FOCUS,
"Focus %s event received on %s 0x%lx (%s) "
"mode %s detail %s serial %lu",
event->evtype == XI_FocusIn ? "in" :
event->evtype == XI_FocusOut ? "out" :
"???",
window ? window->desc : "",
event->event, window_type,
meta_event_mode_to_string (event->mode),
meta_event_detail_to_string (event->mode),
serial);
#endif
/* FIXME our pointer tracking is broken; see how
* gtk+/gdk/x11/gdkevents-x11.c or XFree86/xc/programs/xterm/misc.c
* for how to handle it the correct way. In brief you need to track
* pointer focus and regular focus, and handle EnterNotify in
* PointerRoot mode with no window manager. However as noted above,
* accurate focus tracking will break things because we want to keep
* windows "focused" when using keybindings on them, and also we
* sometimes "focus" a window by focusing its frame or
* no_focus_window; so this all needs rethinking massively.
*
* My suggestion is to change it so that we clearly separate
* actual keyboard focus tracking using the xterm algorithm,
* and mutter's "pretend" focus window, and go through all
* the code and decide which one should be used in each place;
* a hard bit is deciding on a policy for that.
*
* http://bugzilla.gnome.org/show_bug.cgi?id=90382
*/
/* We ignore grabs, though this is questionable. It may be better to
* increase the intelligence of the focus window tracking.
*
* The problem is that keybindings for windows are done with
* XGrabKey, which means focus_window disappears and the front of
* the MRU list gets confused from what the user expects once a
* keybinding is used.
*/
if (event->mode == XINotifyGrab ||
event->mode == XINotifyUngrab ||
/* From WindowMaker, ignore all funky pointer root events */
event->detail > XINotifyNonlinearVirtual)
{
meta_topic (META_DEBUG_FOCUS,
"Ignoring focus event generated by a grab or other weirdness");
return FALSE;
}
if (event->evtype == XI_FocusIn)
{
x11_display->server_focus_window = event->event;
x11_display->server_focus_serial = serial;
focus_window = window;
}
else if (event->evtype == XI_FocusOut)
{
if (event->detail == XINotifyInferior)
{
/* This event means the client moved focus to a subwindow */
meta_topic (META_DEBUG_FOCUS,
"Ignoring focus out with NotifyInferior");
return FALSE;
}
x11_display->server_focus_window = None;
x11_display->server_focus_serial = serial;
focus_window = NULL;
}
else
g_assert_not_reached ();
/* If display->focused_by_us, then the focus_serial will be used only
* for a focus change we made and have already accounted for.
* (See request_xserver_input_focus_change().) Otherwise, we can get
* multiple focus events with the same serial.
*/
if (x11_display->server_focus_serial > x11_display->focus_serial ||
(!x11_display->focused_by_us &&
x11_display->server_focus_serial == x11_display->focus_serial))
{
meta_x11_display_update_focus_window (x11_display,
focus_window ?
focus_window->xwindow : None,
x11_display->server_focus_serial,
FALSE);
meta_display_update_focus_window (display, focus_window);
return TRUE;
}
else
{
return FALSE;
}
}
static gboolean
crossing_serial_is_ignored (MetaX11Display *x11_display,
unsigned long serial)
{
int i;
i = 0;
while (i < N_IGNORED_CROSSING_SERIALS)
{
if (x11_display->display->ignored_crossing_serials[i] == serial)
return TRUE;
++i;
}
return FALSE;
}
static gboolean
handle_input_xevent (MetaX11Display *x11_display,
XIEvent *input_event,
unsigned long serial)
{
XIEnterEvent *enter_event = (XIEnterEvent *) input_event;
Window modified;
MetaWindow *window;
MetaDisplay *display = x11_display->display;
MetaWorkspaceManager *workspace_manager = display->workspace_manager;
MetaContext *context = meta_display_get_context (display);
MetaBackend *backend = meta_context_get_backend (context);
ClutterStage *stage = CLUTTER_STAGE (meta_backend_get_stage (backend));
if (input_event == NULL)
return FALSE;
switch (input_event->evtype)
{
case XI_Enter:
case XI_Leave:
case XI_FocusIn:
case XI_FocusOut:
break;
default:
return FALSE;
}
modified = xievent_get_modified_window (x11_display, input_event);
window = modified != None ?
meta_x11_display_lookup_x_window (x11_display, modified) :
NULL;
switch (input_event->evtype)
{
case XI_Enter:
if (clutter_stage_get_grab_actor (stage) != NULL)
break;
/* Check if we've entered a window; do this even if window->has_focus to
* avoid races.
*/
if (window && !crossing_serial_is_ignored (x11_display, serial) &&
enter_event->mode != XINotifyGrab &&
enter_event->mode != XINotifyUngrab &&
enter_event->detail != XINotifyInferior &&
meta_x11_display_focus_sentinel_clear (x11_display))
{
meta_window_handle_enter (window,
enter_event->time,
enter_event->root_x,
enter_event->root_y);
}
break;
case XI_Leave:
if (clutter_stage_get_grab_actor (stage) != NULL)
break;
if (window != NULL &&
enter_event->mode != XINotifyGrab &&
enter_event->mode != XINotifyUngrab)
{
meta_window_handle_leave (window);
}
break;
case XI_FocusIn:
case XI_FocusOut:
if (clutter_stage_get_grab_actor (stage) != NULL)
break;
if (handle_window_focus_event (x11_display, window, enter_event, serial) &&
enter_event->event == enter_event->root)
{
if (enter_event->evtype == XI_FocusIn &&
enter_event->detail == XINotifyDetailNone)
{
meta_topic (META_DEBUG_FOCUS,
"Focus got set to None, probably due to "
"brain-damage in the X protocol (see bug "
"125492). Setting the default focus window.");
meta_workspace_focus_default_window (workspace_manager->active_workspace,
NULL,
meta_x11_display_get_current_time_roundtrip (x11_display));
}
else if (enter_event->evtype == XI_FocusIn &&
enter_event->mode == XINotifyNormal &&
enter_event->detail == XINotifyInferior)
{
meta_topic (META_DEBUG_FOCUS,
"Focus got set to root window, probably due to "
"gnome-session logout dialog usage (see bug "
"153220). Setting the default focus window.");
meta_workspace_focus_default_window (workspace_manager->active_workspace,
NULL,
meta_x11_display_get_current_time_roundtrip (x11_display));
}
}
break;
}
/* Don't pass these events through to Clutter / GTK+ */
return TRUE;
}
static void
process_request_frame_extents (MetaX11Display *x11_display,
XEvent *event)
{
/* The X window whose frame extents will be set. */
Window xwindow = event->xclient.window;
unsigned long data[4] = { 0, 0, 0, 0 };
meta_topic (META_DEBUG_GEOMETRY,
"Setting _NET_FRAME_EXTENTS on unmanaged window 0x%lx",
xwindow);
meta_x11_error_trap_push (x11_display);
XChangeProperty (x11_display->xdisplay, xwindow,
x11_display->atom__NET_FRAME_EXTENTS,
XA_CARDINAL,
32, PropModeReplace, (guchar*) data, 4);
meta_x11_error_trap_pop (x11_display);
}
/* from fvwm2, Copyright Matthias Clasen, Dominik Vogt */
static gboolean
convert_property (MetaX11Display *x11_display,
Window w,
Atom target,
Atom property)
{
#define N_TARGETS 4
Atom conversion_targets[N_TARGETS];
long icccm_version[] = { 2, 0 };
conversion_targets[0] = x11_display->atom_TARGETS;
conversion_targets[1] = x11_display->atom_MULTIPLE;
conversion_targets[2] = x11_display->atom_TIMESTAMP;
conversion_targets[3] = x11_display->atom_VERSION;
meta_x11_error_trap_push (x11_display);
if (target == x11_display->atom_TARGETS)
XChangeProperty (x11_display->xdisplay, w, property,
XA_ATOM, 32, PropModeReplace,
(unsigned char *)conversion_targets, N_TARGETS);
else if (target == x11_display->atom_TIMESTAMP)
XChangeProperty (x11_display->xdisplay, w, property,
XA_INTEGER, 32, PropModeReplace,
(unsigned char *)&x11_display->wm_sn_timestamp, 1);
else if (target == x11_display->atom_VERSION)
XChangeProperty (x11_display->xdisplay, w, property,
XA_INTEGER, 32, PropModeReplace,
(unsigned char *)icccm_version, 2);
else
{
meta_x11_error_trap_pop_with_return (x11_display);
return FALSE;
}
if (meta_x11_error_trap_pop_with_return (x11_display) != Success)
return FALSE;
/* Be sure the PropertyNotify has arrived so we
* can send SelectionNotify
*/
/* FIXME the error trap pop synced anyway, right? */
meta_topic (META_DEBUG_SYNC, "Syncing on %s", G_STRFUNC);
XSync (x11_display->xdisplay, False);
return TRUE;
}
/* from fvwm2, Copyright Matthias Clasen, Dominik Vogt */
static void
process_selection_request (MetaX11Display *x11_display,
XEvent *event)
{
XSelectionEvent reply;
if (x11_display->wm_sn_selection_window != event->xselectionrequest.owner ||
x11_display->wm_sn_atom != event->xselectionrequest.selection)
{
char *str;
meta_x11_error_trap_push (x11_display);
str = XGetAtomName (x11_display->xdisplay,
event->xselectionrequest.selection);
meta_x11_error_trap_pop (x11_display);
meta_verbose ("Selection request with selection %s window 0x%lx not a WM_Sn selection we recognize",
str ? str : "(bad atom)", event->xselectionrequest.owner);
meta_XFree (str);
return;
}
reply.type = SelectionNotify;
reply.display = x11_display->xdisplay;
reply.requestor = event->xselectionrequest.requestor;
reply.selection = event->xselectionrequest.selection;
reply.target = event->xselectionrequest.target;
reply.property = None;
reply.time = event->xselectionrequest.time;
if (event->xselectionrequest.target == x11_display->atom_MULTIPLE)
{
if (event->xselectionrequest.property != None)
{
Atom type, *adata;
int i, format;
unsigned long num, rest;
unsigned char *data;
meta_x11_error_trap_push (x11_display);
if (XGetWindowProperty (x11_display->xdisplay,
event->xselectionrequest.requestor,
event->xselectionrequest.property, 0, 256, False,
x11_display->atom_ATOM_PAIR,
&type, &format, &num, &rest, &data) != Success)
{
meta_x11_error_trap_pop_with_return (x11_display);
return;
}
if (meta_x11_error_trap_pop_with_return (x11_display) == Success)
{
/* FIXME: to be 100% correct, should deal with rest > 0,
* but since we have 4 possible targets, we will hardly ever
* meet multiple requests with a length > 8
*/
adata = (Atom*)data;
i = 0;
while (i < (int) num)
{
if (!convert_property (x11_display,
event->xselectionrequest.requestor,
adata[i], adata[i+1]))
adata[i+1] = None;
i += 2;
}
meta_x11_error_trap_push (x11_display);
XChangeProperty (x11_display->xdisplay,
event->xselectionrequest.requestor,
event->xselectionrequest.property,
x11_display->atom_ATOM_PAIR,
32, PropModeReplace, data, num);
meta_x11_error_trap_pop (x11_display);
meta_XFree (data);
}
}
}
else
{
if (event->xselectionrequest.property == None)
event->xselectionrequest.property = event->xselectionrequest.target;
if (convert_property (x11_display,
event->xselectionrequest.requestor,
event->xselectionrequest.target,
event->xselectionrequest.property))
reply.property = event->xselectionrequest.property;
}
XSendEvent (x11_display->xdisplay,
event->xselectionrequest.requestor,
False, 0L, (XEvent*)&reply);
meta_verbose ("Handled selection request");
}
static gboolean
close_display_idle_cb (gpointer user_data)
{
MetaX11Display *x11_display = META_X11_DISPLAY (user_data);
MetaDisplay *display = x11_display->display;
MetaContext *context = meta_display_get_context (display);
meta_display_close (display,
x11_display->xselectionclear_timestamp);
x11_display->display_close_idle = 0;
meta_context_terminate (context);
return G_SOURCE_REMOVE;
}
static gboolean
process_selection_clear (MetaX11Display *x11_display,
XEvent *event)
{
if (x11_display->wm_sn_selection_window != event->xselectionclear.window ||
x11_display->wm_sn_atom != event->xselectionclear.selection)
{
char *str;
meta_x11_error_trap_push (x11_display);
str = XGetAtomName (x11_display->xdisplay,
event->xselectionclear.selection);
meta_x11_error_trap_pop (x11_display);
meta_verbose ("Selection clear with selection %s window 0x%lx not a WM_Sn selection we recognize",
str ? str : "(bad atom)", event->xselectionclear.window);
meta_XFree (str);
return FALSE;
}
meta_verbose ("Got selection clear for on display %s",
x11_display->name);
/* We can't close a GdkDisplay in an even handler. */
if (!x11_display->display_close_idle)
{
x11_display->xselectionclear_timestamp = event->xselectionclear.time;
x11_display->display_close_idle = g_idle_add (close_display_idle_cb, x11_display);
}
return TRUE;
}
static void
notify_bell (MetaX11Display *x11_display,
XkbAnyEvent *xkb_ev)
{
MetaDisplay *display = x11_display->display;
XkbBellNotifyEvent *xkb_bell_event = (XkbBellNotifyEvent*) xkb_ev;
MetaWindow *window;
window = meta_x11_display_lookup_x_window (x11_display,
xkb_bell_event->window);
if (!window && display->focus_window && display->focus_window->frame)
window = display->focus_window;
x11_display->last_bell_time = xkb_ev->time;
if (!meta_bell_notify (display, window) &&
meta_prefs_bell_is_audible ())
{
/* Force a classic bell if the libcanberra bell failed. */
XkbForceDeviceBell (x11_display->xdisplay,
xkb_bell_event->device,
xkb_bell_event->bell_class,
xkb_bell_event->bell_id,
xkb_bell_event->percent);
}
}
static gboolean
handle_other_xevent (MetaX11Display *x11_display,
XEvent *event)
{
MetaDisplay *display = x11_display->display;
MetaWorkspaceManager *workspace_manager = display->workspace_manager;
Window modified;
MetaWindow *window;
MetaWindow *property_for_window;
gboolean frame_was_receiver;
gboolean bypass_gtk = FALSE;
modified = event_get_modified_window (x11_display, event);
window = modified != None ? meta_x11_display_lookup_x_window (x11_display, modified) : NULL;
frame_was_receiver = (window && window->frame && modified == window->frame->xwindow);
/* We only want to respond to _NET_WM_USER_TIME property notify
* events on _NET_WM_USER_TIME_WINDOW windows; in particular,
* responding to UnmapNotify events is kind of bad.
*/
property_for_window = NULL;
if (window && modified == window->user_time_window)
{
property_for_window = window;
window = NULL;
}
if (META_X11_DISPLAY_HAS_XSYNC (x11_display) &&
event->type == (x11_display->xsync_event_base + XSyncAlarmNotify))
{
MetaSyncCounter *sync_counter;
sync_counter = meta_x11_display_lookup_sync_alarm (x11_display,
((XSyncAlarmNotifyEvent*)event)->alarm);
if (sync_counter != NULL)
{
XSyncValue value = ((XSyncAlarmNotifyEvent*)event)->counter_value;
gint64 new_counter_value;
new_counter_value = XSyncValueLow32 (value) + ((gint64)XSyncValueHigh32 (value) << 32);
meta_sync_counter_update (sync_counter, new_counter_value);
bypass_gtk = TRUE; /* GTK doesn't want to see this really */
}
else if (x11_display->alarm_filters)
{
int i;
for (i = 0; i < x11_display->alarm_filters->len; i++)
{
MetaX11AlarmFilter *alarm_filter =
x11_display->alarm_filters->pdata[i];
if (alarm_filter->filter (x11_display,
(XSyncAlarmNotifyEvent *) event,
alarm_filter->user_data))
{
bypass_gtk = TRUE;
break;
}
}
}
goto out;
}
if (META_X11_DISPLAY_HAS_SHAPE (x11_display) &&
event->type == (x11_display->shape_event_base + ShapeNotify))
{
bypass_gtk = TRUE; /* GTK doesn't want to see this really */
if (window)
{
XShapeEvent *sev = (XShapeEvent*) event;
if (sev->kind == ShapeBounding)
meta_window_x11_update_shape_region (window);
else if (sev->kind == ShapeInput)
meta_window_x11_update_input_region (window);
}
else
{
meta_topic (META_DEBUG_SHAPES,
"ShapeNotify not on a client window (window 0x%lx)",
modified);
}
goto out;
}
switch (event->type)
{
case KeymapNotify:
break;
case Expose:
break;
case GraphicsExpose:
break;
case NoExpose:
break;
case VisibilityNotify:
break;
case CreateNotify:
{
if (event->xcreatewindow.parent == x11_display->xroot)
meta_stack_tracker_create_event (display->stack_tracker,
&event->xcreatewindow);
}
break;
case DestroyNotify:
{
if (event->xdestroywindow.event == x11_display->xroot)
meta_stack_tracker_destroy_event (display->stack_tracker,
&event->xdestroywindow);
}
if (window)
{
/* FIXME: It sucks that DestroyNotify events don't come with
* a timestamp; could we do something better here? Maybe X
* will change one day?
*/
guint32 timestamp;
timestamp = meta_display_get_current_time_roundtrip (display);
if (frame_was_receiver)
{
meta_x11_error_trap_push (x11_display);
meta_window_destroy_frame (window->frame->window);
meta_x11_error_trap_pop (x11_display);
}
else
{
/* Unmanage destroyed window */
meta_window_unmanage (window, timestamp);
window = NULL;
}
}
break;
case UnmapNotify:
if (window)
{
/* FIXME: It sucks that UnmapNotify events don't come with
* a timestamp; could we do something better here? Maybe X
* will change one day?
*/
guint32 timestamp;
timestamp = meta_display_get_current_time_roundtrip (display);
if (!frame_was_receiver)
{
if (window->unmaps_pending == 0)
{
meta_topic (META_DEBUG_WINDOW_STATE,
"Window %s withdrawn",
window->desc);
/* Unmanage withdrawn window */
window->withdrawn = TRUE;
meta_window_unmanage (window, timestamp);
window = NULL;
}
else
{
window->unmaps_pending -= 1;
meta_topic (META_DEBUG_WINDOW_STATE,
"Received pending unmap, %d now pending",
window->unmaps_pending);
}
}
}
break;
case MapNotify:
/* NB: override redirect windows won't cause a map request so we
* watch out for map notifies against any root windows too if a
* compositor is enabled: */
if (window == NULL && event->xmap.event == x11_display->xroot)
{
window = meta_window_x11_new (display, event->xmap.window,
FALSE, META_COMP_EFFECT_CREATE);
}
else if (window && window->restore_focus_on_map &&
window->reparents_pending == 0)
{
meta_window_focus (window,
meta_display_get_current_time_roundtrip (display));
}
break;
case MapRequest:
if (window == NULL)
{
Atom type;
int format;
unsigned long nitems, bytes_after, *data;
/* Check whether the new window is a frame for another window */
meta_x11_error_trap_push (x11_display);
if (XGetWindowProperty (x11_display->xdisplay,
event->xmaprequest.window,
x11_display->atom__MUTTER_FRAME_FOR,
0, 32, False, XA_WINDOW,
&type, &format, &nitems, &bytes_after,
(guchar **) &data) != Success)
{
meta_x11_error_trap_pop (x11_display);
break;
}
if (meta_x11_error_trap_pop_with_return (x11_display) != Success)
break;
if (nitems == 1)
{
Window client_window;
client_window = data[0];
XFree (data);
window = meta_x11_display_lookup_x_window (x11_display,
client_window);
if (window != NULL && window->decorated && !window->frame)
{
meta_window_set_frame_xwindow (window,
event->xmaprequest.window);
meta_window_x11_initialize_state (window);
meta_window_update_visibility (window);
}
break;
}
window = meta_window_x11_new (display, event->xmaprequest.window,
FALSE, META_COMP_EFFECT_CREATE);
/* The window might have initial iconic state, but this is a
* MapRequest, fall through to ensure it is unminimized in
* that case.
*/
}
else if (frame_was_receiver)
{
break;
}
/* Double check that creating the MetaWindow succeeded */
if (window == NULL)
break;
meta_verbose ("MapRequest on %s mapped = %d minimized = %d",
window->desc, window->mapped, window->minimized);
if (window->minimized)
{
meta_window_unminimize (window);
if (window->workspace != workspace_manager->active_workspace)
{
meta_verbose ("Changing workspace due to MapRequest mapped = %d minimized = %d",
window->mapped, window->minimized);
meta_window_change_workspace (window,
workspace_manager->active_workspace);
}
}
break;
case ReparentNotify:
{
if (window && window->reparents_pending > 0)
window->reparents_pending -= 1;
if (event->xreparent.event == x11_display->xroot)
meta_stack_tracker_reparent_event (display->stack_tracker,
&event->xreparent);
}
break;
case ConfigureNotify:
if (event->xconfigure.event != event->xconfigure.window)
{
if (event->xconfigure.event == x11_display->xroot &&
event->xconfigure.window != x11_display->composite_overlay_window)
meta_stack_tracker_configure_event (display->stack_tracker,
&event->xconfigure);
}
if (window && window->override_redirect)
meta_window_x11_configure_notify (window, &event->xconfigure);
break;
case ConfigureRequest:
/* This comment and code is found in both twm and fvwm */
/*
* According to the July 27, 1988 ICCCM draft, we should ignore size and
* position fields in the WM_NORMAL_HINTS property when we map a window.
* Instead, we'll read the current geometry. Therefore, we should respond
* to configuration requests for windows which have never been mapped.
*/
if (window == NULL)
{
unsigned int xwcm;
XWindowChanges xwc;
xwcm = event->xconfigurerequest.value_mask &
(CWX | CWY | CWWidth | CWHeight | CWBorderWidth);
xwc.x = event->xconfigurerequest.x;
xwc.y = event->xconfigurerequest.y;
xwc.width = event->xconfigurerequest.width;
xwc.height = event->xconfigurerequest.height;
xwc.border_width = event->xconfigurerequest.border_width;
meta_verbose ("Configuring withdrawn window to %d,%d %dx%d border %d (some values may not be in mask)",
xwc.x, xwc.y, xwc.width, xwc.height, xwc.border_width);
meta_x11_error_trap_push (x11_display);
XConfigureWindow (x11_display->xdisplay, event->xconfigurerequest.window,
xwcm, &xwc);
meta_x11_error_trap_pop (x11_display);
}
else if (!frame_was_receiver)
{
meta_window_x11_configure_request (window, event);
}
break;
case GravityNotify:
break;
case ResizeRequest:
break;
case CirculateNotify:
break;
case CirculateRequest:
break;
case PropertyNotify:
{
MetaGroup *group;
if (window && !frame_was_receiver)
meta_window_x11_property_notify (window, event);
else if (property_for_window && !frame_was_receiver)
meta_window_x11_property_notify (property_for_window, event);
else if (frame_was_receiver)
meta_frame_handle_xevent (window->frame, event);
group = meta_x11_display_lookup_group (x11_display,
event->xproperty.window);
if (group != NULL)
meta_group_property_notify (group, event);
if (event->xproperty.window == x11_display->xroot)
{
if (event->xproperty.atom ==
x11_display->atom__NET_DESKTOP_LAYOUT)
meta_x11_display_update_workspace_layout (x11_display);
else if (event->xproperty.atom ==
x11_display->atom__NET_DESKTOP_NAMES)
meta_x11_display_update_workspace_names (x11_display);
/* we just use this property as a sentinel to avoid
* certain race conditions. See the comment for the
* sentinel_counter variable declaration in display.h
*/
if (event->xproperty.atom ==
x11_display->atom__MUTTER_SENTINEL)
{
meta_x11_display_decrement_focus_sentinel (x11_display);
}
}
}
break;
case SelectionRequest:
process_selection_request (x11_display, event);
break;
case SelectionNotify:
break;
case ColormapNotify:
break;
case ClientMessage:
if (window)
{
#ifdef HAVE_XWAYLAND
if (event->xclient.message_type == x11_display->atom_WL_SURFACE_ID)
{
guint32 surface_id = event->xclient.data.l[0];
meta_xwayland_handle_wl_surface_id (window, surface_id);
}
else if (event->xclient.message_type ==
x11_display->atom__XWAYLAND_MAY_GRAB_KEYBOARD)
{
if (meta_is_wayland_compositor ())
g_object_set (G_OBJECT (window),
"xwayland-may-grab-keyboard", (event->xclient.data.l[0] != 0),
NULL);
}
else
#endif
meta_window_x11_client_message (window, event);
}
else
{
if (event->xclient.window == x11_display->xroot)
{
if (event->xclient.message_type ==
x11_display->atom__NET_CURRENT_DESKTOP)
{
int space;
MetaWorkspace *workspace;
guint32 time;
space = event->xclient.data.l[0];
time = event->xclient.data.l[1];
meta_verbose ("Request to change current workspace to %d with "
"specified timestamp of %u",
space, time);
workspace = meta_workspace_manager_get_workspace_by_index (workspace_manager, space);
if (workspace)
{
/* Handle clients using the older version of the spec... */
if (time == 0)
time = meta_x11_display_get_current_time_roundtrip (x11_display);
meta_workspace_activate (workspace, time);
}
else
{
meta_verbose ("Don't know about workspace %d", space);
}
}
else if (event->xclient.message_type ==
x11_display->atom__NET_NUMBER_OF_DESKTOPS)
{
int num_spaces;
num_spaces = event->xclient.data.l[0];
meta_verbose ("Request to set number of workspaces to %d",
num_spaces);
meta_prefs_set_num_workspaces (num_spaces);
}
else if (event->xclient.message_type ==
x11_display->atom__NET_SHOWING_DESKTOP)
{
gboolean showing_desktop;
guint32 timestamp;
showing_desktop = event->xclient.data.l[0] != 0;
/* FIXME: Braindead protocol doesn't have a timestamp */
timestamp = meta_x11_display_get_current_time_roundtrip (x11_display);
meta_verbose ("Request to %s desktop",
showing_desktop ? "show" : "hide");
if (showing_desktop)
meta_workspace_manager_show_desktop (workspace_manager, timestamp);
else
{
meta_workspace_manager_unshow_desktop (workspace_manager);
meta_workspace_focus_default_window (workspace_manager->active_workspace, NULL, timestamp);
}
}
else if (event->xclient.message_type ==
x11_display->atom_WM_PROTOCOLS)
{
meta_verbose ("Received WM_PROTOCOLS message");
if ((Atom)event->xclient.data.l[0] == x11_display->atom__NET_WM_PING)
{
guint32 timestamp = event->xclient.data.l[1];
meta_display_pong_for_serial (display, timestamp);
/* We don't want ping reply events going into
* the GTK+ event loop because gtk+ will treat
* them as ping requests and send more replies.
*/
bypass_gtk = TRUE;
}
}
}
if (event->xclient.message_type ==
x11_display->atom__NET_REQUEST_FRAME_EXTENTS)
{
meta_verbose ("Received _NET_REQUEST_FRAME_EXTENTS message");
process_request_frame_extents (x11_display, event);
}
}
break;
case MappingNotify:
{
gboolean ignore_current;
ignore_current = FALSE;
/* Check whether the next event is an identical MappingNotify
* event. If it is, ignore the current event, we'll update
* when we get the next one.
*/
if (XPending (x11_display->xdisplay))
{
XEvent next_event;
XPeekEvent (x11_display->xdisplay, &next_event);
if (next_event.type == MappingNotify &&
next_event.xmapping.request == event->xmapping.request)
ignore_current = TRUE;
}
if (!ignore_current)
{
/* Let XLib know that there is a new keyboard mapping.
*/
XRefreshKeyboardMapping (&event->xmapping);
}
}
break;
default:
if (event->type == x11_display->xkb_base_event_type)
{
XkbAnyEvent *xkb_ev = (XkbAnyEvent *) event;
switch (xkb_ev->xkb_type)
{
case XkbBellNotify:
if (XSERVER_TIME_IS_BEFORE(x11_display->last_bell_time,
xkb_ev->time - 100))
{
notify_bell (x11_display, xkb_ev);
}
break;
default:
break;
}
}
break;
}
out:
return bypass_gtk;
}
static gboolean
window_has_xwindow (MetaWindow *window,
Window xwindow)
{
if (window->xwindow == xwindow)
return TRUE;
if (window->frame && window->frame->xwindow == xwindow)
return TRUE;
return FALSE;
}
static gboolean
process_selection_event (MetaX11Display *x11_display,
XEvent *event)
{
gboolean handled = FALSE;
GList *l;
handled |= meta_x11_selection_handle_event (x11_display, event);
for (l = x11_display->selection.input_streams; l && !handled;)
{
GList *next = l->next;
handled |= meta_x11_selection_input_stream_xevent (l->data, event);
l = next;
}
for (l = x11_display->selection.output_streams; l && !handled;)
{
GList *next = l->next;
handled |= meta_x11_selection_output_stream_xevent (l->data, event);
l = next;
}
return handled;
}
/**
* meta_display_handle_xevent:
* @display: The MetaDisplay that events are coming from
* @event: The event that just happened
*
* This is the most important function in the whole program. It is the heart,
* it is the nexus, it is the Grand Central Station of Mutter's world.
* When we create a #MetaDisplay, we ask GDK to pass *all* events for *all*
* windows to this function. So every time anything happens that we might
* want to know about, this function gets called. You see why it gets a bit
* busy around here. Most of this function is a ginormous switch statement
* dealing with all the kinds of events that might turn up.
*/
static gboolean
meta_x11_display_handle_xevent (MetaX11Display *x11_display,
XEvent *event)
{
MetaDisplay *display = x11_display->display;
MetaContext *context = meta_display_get_context (display);
MetaBackend *backend = meta_context_get_backend (context);
Window modified;
gboolean bypass_compositor = FALSE, bypass_gtk = FALSE;
XIEvent *input_event;
MetaCursorTracker *cursor_tracker;
#ifdef HAVE_XWAYLAND
MetaWaylandCompositor *wayland_compositor;
#endif
COGL_TRACE_BEGIN (MetaX11DisplayHandleXevent,
"X11Display (handle X11 event)");
#if 0
meta_spew_event_print (x11_display, event);
#endif
if (meta_x11_startup_notification_handle_xevent (x11_display, event))
{
bypass_gtk = bypass_compositor = TRUE;
goto out;
}
#ifdef HAVE_XWAYLAND
wayland_compositor = meta_context_get_wayland_compositor (context);
if (meta_is_wayland_compositor () &&
meta_xwayland_manager_handle_xevent (&wayland_compositor->xwayland_manager,
event))
{
bypass_gtk = bypass_compositor = TRUE;
goto out;
}
#endif
if (process_selection_event (x11_display, event))
{
bypass_gtk = bypass_compositor = TRUE;
goto out;
}
display->current_time = event_get_time (x11_display, event);
if (META_IS_BACKEND_X11 (backend))
meta_backend_x11_handle_event (META_BACKEND_X11 (backend), event);
if (x11_display->focused_by_us &&
event->xany.serial > x11_display->focus_serial &&
display->focus_window &&
!window_has_xwindow (display->focus_window, x11_display->server_focus_window) &&
meta_display_windows_are_interactable (display))
{
meta_topic (META_DEBUG_FOCUS, "Earlier attempt to focus %s failed",
display->focus_window->desc);
meta_x11_display_update_focus_window (x11_display,
x11_display->server_focus_window,
x11_display->server_focus_serial,
FALSE);
meta_display_update_focus_window (display,
meta_x11_display_lookup_x_window (x11_display,
x11_display->server_focus_window));
}
if (event->xany.window == x11_display->xroot)
{
cursor_tracker = meta_backend_get_cursor_tracker (backend);
if (META_IS_CURSOR_TRACKER_X11 (cursor_tracker))
{
MetaCursorTrackerX11 *cursor_tracker_x11 =
META_CURSOR_TRACKER_X11 (cursor_tracker);
if (meta_cursor_tracker_x11_handle_xevent (cursor_tracker_x11, event))
{
bypass_gtk = bypass_compositor = TRUE;
goto out;
}
}
}
modified = event_get_modified_window (x11_display, event);
input_event = get_input_event (x11_display, event);
if (handle_input_xevent (x11_display, input_event, event->xany.serial))
{
bypass_gtk = bypass_compositor = TRUE;
goto out;
}
if (handle_other_xevent (x11_display, event))
{
bypass_gtk = TRUE;
goto out;
}
if (event->type == SelectionClear)
{
if (process_selection_clear (x11_display, event))
{
bypass_gtk = TRUE;
goto out;
}
}
out:
if (!bypass_compositor && META_IS_COMPOSITOR_X11 (display->compositor))
{
MetaCompositorX11 *compositor_x11 =
META_COMPOSITOR_X11 (display->compositor);
MetaWindow *window;
if (modified != None)
window = meta_x11_display_lookup_x_window (x11_display, modified);
else
window = NULL;
meta_compositor_x11_process_xevent (compositor_x11, event, window);
}
display->current_time = META_CURRENT_TIME;
COGL_TRACE_DESCRIBE (MetaX11DisplayHandleXevent,
get_event_name (x11_display, event));
COGL_TRACE_END (MetaX11DisplayHandleXevent);
return bypass_gtk;
}
static GdkFilterReturn
xevent_filter (GdkXEvent *xevent,
GdkEvent *event,
gpointer data)
{
MetaX11Display *x11_display = data;
if (meta_x11_display_handle_xevent (x11_display, xevent))
return GDK_FILTER_REMOVE;
else
return GDK_FILTER_CONTINUE;
}
void
meta_x11_display_init_events (MetaX11Display *x11_display)
{
gdk_window_add_filter (NULL, xevent_filter, x11_display);
}
void
meta_x11_display_free_events (MetaX11Display *x11_display)
{
gdk_window_remove_filter (NULL, xevent_filter, x11_display);
}
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