void
meta_compositor_manage (MetaCompositor *compositor)
{
MetaDisplay *display = compositor->display;
Display *xdisplay = display->xdisplay;
MetaScreen *screen = display->screen;
Window xwin = 0;
gint width, height;
meta_screen_set_cm_selection (display->screen);
if (meta_is_wayland_compositor ())
{
MetaWaylandCompositor *wayland_compositor = meta_wayland_compositor_get_default ();
compositor->stage = meta_stage_new ();
wayland_compositor->stage = compositor->stage;
meta_screen_get_size (screen, &width, &height);
clutter_actor_set_size (compositor->stage, width, height);
clutter_actor_show (compositor->stage);
}
else
{
compositor->stage = clutter_stage_new ();
meta_screen_get_size (screen, &width, &height);
clutter_actor_realize (compositor->stage);
xwin = clutter_x11_get_stage_window (CLUTTER_STAGE (compositor->stage));
XResizeWindow (xdisplay, xwin, width, height);
{
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_KeyPress);
XISetMask (mask.mask, XI_KeyRelease);
XISetMask (mask.mask, XI_ButtonPress);
XISetMask (mask.mask, XI_ButtonRelease);
XISetMask (mask.mask, XI_Enter);
XISetMask (mask.mask, XI_Leave);
XISetMask (mask.mask, XI_FocusIn);
XISetMask (mask.mask, XI_FocusOut);
XISetMask (mask.mask, XI_Motion);
XIClearMask (mask.mask, XI_TouchBegin);
XIClearMask (mask.mask, XI_TouchEnd);
XIClearMask (mask.mask, XI_TouchUpdate);
XISelectEvents (backend_xdisplay, xwin, &mask, 1);
}
}
/* We use connect_after() here to accomodate code in GNOME Shell that,
* when benchmarking drawing performance, connects to ::after-paint
* and calls glFinish(). The timing information from that will be
* more accurate if we hold off until that completes before we signal
* apps to begin drawing the next frame. If there are no other
* connections to ::after-paint, connect() vs. connect_after() doesn't
* matter.
*/
g_signal_connect_after (CLUTTER_STAGE (compositor->stage), "after-paint",
G_CALLBACK (after_stage_paint), compositor);
clutter_stage_set_sync_delay (CLUTTER_STAGE (compositor->stage), META_SYNC_DELAY);
compositor->window_group = meta_window_group_new (screen);
compositor->top_window_group = meta_window_group_new (screen);
clutter_actor_add_child (compositor->stage, compositor->window_group);
clutter_actor_add_child (compositor->stage, compositor->top_window_group);
if (meta_is_wayland_compositor ())
{
/* NB: When running as a wayland compositor we don't need an X
* composite overlay window, and we don't need to play any input
* region tricks to redirect events into clutter. */
compositor->output = None;
}
else
{
compositor->output = screen->composite_overlay_window;
XReparentWindow (xdisplay, xwin, compositor->output, 0, 0);
meta_empty_stage_input_region (screen);
/* Make sure there isn't any left-over output shape on the
* overlay window by setting the whole screen to be an
* output region.
*
* Note: there doesn't seem to be any real chance of that
* because the X server will destroy the overlay window
* when the last client using it exits.
*/
XFixesSetWindowShapeRegion (xdisplay, compositor->output, ShapeBounding, 0, 0, None);
/* Map overlay window before redirecting windows offscreen so we catch their
* contents until we show the stage.
*/
XMapWindow (xdisplay, compositor->output);
}
redirect_windows (display->screen);
compositor->plugin_mgr = meta_plugin_manager_new (compositor);
}
void
meta_compositor_manage (MetaCompositor *compositor)
{
MetaDisplay *display = compositor->display;
Display *xdisplay = display->xdisplay;
MetaScreen *screen = display->screen;
MetaBackend *backend = meta_get_backend ();
meta_screen_set_cm_selection (display->screen);
compositor->stage = meta_backend_get_stage (backend);
/* We use connect_after() here to accomodate code in GNOME Shell that,
* when benchmarking drawing performance, connects to ::after-paint
* and calls glFinish(). The timing information from that will be
* more accurate if we hold off until that completes before we signal
* apps to begin drawing the next frame. If there are no other
* connections to ::after-paint, connect() vs. connect_after() doesn't
* matter.
*/
g_signal_connect_after (CLUTTER_STAGE (compositor->stage), "after-paint",
G_CALLBACK (after_stage_paint), compositor);
clutter_stage_set_sync_delay (CLUTTER_STAGE (compositor->stage), META_SYNC_DELAY);
compositor->window_group = meta_window_group_new (screen);
compositor->top_window_group = meta_window_group_new (screen);
compositor->feedback_group = meta_window_group_new (screen);
clutter_actor_add_child (compositor->stage, compositor->window_group);
clutter_actor_add_child (compositor->stage, compositor->top_window_group);
clutter_actor_add_child (compositor->stage, compositor->feedback_group);
if (meta_is_wayland_compositor ())
{
/* NB: When running as a wayland compositor we don't need an X
* composite overlay window, and we don't need to play any input
* region tricks to redirect events into clutter. */
compositor->output = None;
}
else
{
Window xwin;
compositor->output = screen->composite_overlay_window;
xwin = meta_backend_x11_get_xwindow (META_BACKEND_X11 (backend));
XReparentWindow (xdisplay, xwin, compositor->output, 0, 0);
meta_empty_stage_input_region (screen);
/* Make sure there isn't any left-over output shape on the
* overlay window by setting the whole screen to be an
* output region.
*
* Note: there doesn't seem to be any real chance of that
* because the X server will destroy the overlay window
* when the last client using it exits.
*/
XFixesSetWindowShapeRegion (xdisplay, compositor->output, ShapeBounding, 0, 0, None);
/* Map overlay window before redirecting windows offscreen so we catch their
* contents until we show the stage.
*/
XMapWindow (xdisplay, compositor->output);
compositor->have_x11_sync_object = meta_sync_ring_init (xdisplay);
}
redirect_windows (display->screen);
compositor->plugin_mgr = meta_plugin_manager_new (compositor);
}
void
meta_compositor_manage_screen (MetaCompositor *compositor,
MetaScreen *screen)
{
MetaCompScreen *info;
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
int screen_number = meta_screen_get_screen_number (screen);
Window xroot = meta_screen_get_xroot (screen);
Window xwin;
gint width, height;
XWindowAttributes attr;
long event_mask;
guint n_retries;
guint max_retries;
/* Check if the screen is already managed */
if (meta_screen_get_compositor_data (screen))
return;
if (meta_get_replace_current_wm ())
max_retries = 5;
else
max_retries = 1;
n_retries = 0;
/* Some compositors (like old versions of Muffin) might not properly unredirect
* subwindows before destroying the WM selection window; so we wait a while
* for such a compositor to exit before giving up.
*/
while (TRUE)
{
meta_error_trap_push_with_return (display);
XCompositeRedirectSubwindows (xdisplay, xroot, CompositeRedirectManual);
XSync (xdisplay, FALSE);
if (!meta_error_trap_pop_with_return (display))
break;
if (n_retries == max_retries)
{
/* This probably means that a non-WM compositor like xcompmgr is running;
* we have no way to get it to exit */
meta_fatal (_("Another compositing manager is already running on screen %i on display \"%s\"."),
screen_number, display->name);
}
n_retries++;
g_usleep (G_USEC_PER_SEC);
}
info = g_new0 (MetaCompScreen, 1);
/*
* We use an empty input region for Clutter as a default because that allows
* the user to interact with all the windows displayed on the screen.
* We have to initialize info->pending_input_region to an empty region explicitly,
* because None value is used to mean that the whole screen is an input region.
*/
info->pending_input_region = XFixesCreateRegion (xdisplay, NULL, 0);
info->screen = screen;
meta_screen_set_compositor_data (screen, info);
info->output = None;
info->windows = NULL;
meta_screen_set_cm_selection (screen);
info->stage = clutter_stage_new ();
meta_screen_get_size (screen, &width, &height);
clutter_actor_realize (info->stage);
xwin = clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage));
XResizeWindow (xdisplay, xwin, width, height);
event_mask = FocusChangeMask |
ExposureMask |
EnterWindowMask | LeaveWindowMask |
PointerMotionMask |
PropertyChangeMask |
ButtonPressMask | ButtonReleaseMask |
KeyPressMask | KeyReleaseMask |
StructureNotifyMask;
if (XGetWindowAttributes (xdisplay, xwin, &attr))
{
event_mask |= attr.your_event_mask;
}
XSelectInput (xdisplay, xwin, event_mask);
info->window_group = meta_window_group_new (screen);
info->background_actor = meta_background_actor_new_for_screen (screen);
info->bottom_window_group = clutter_group_new();
info->overlay_group = clutter_group_new ();
info->top_window_group = meta_window_group_new (screen);
info->hidden_group = clutter_group_new ();
clutter_container_add (CLUTTER_CONTAINER (info->window_group),
info->background_actor,
NULL);
clutter_container_add (CLUTTER_CONTAINER (info->stage),
info->window_group,
info->overlay_group,
info->hidden_group,
NULL);
clutter_actor_hide (info->hidden_group);
info->plugin_mgr =
meta_plugin_manager_get (screen);
meta_plugin_manager_initialize (info->plugin_mgr);
/*
* Delay the creation of the overlay window as long as we can, to avoid
* blanking out the screen. This means that during the plugin loading, the
* overlay window is not accessible; if the plugin needs to access it
* directly, it should hook into the "show" signal on stage, and do
* its stuff there.
*/
info->output = get_output_window (screen);
XReparentWindow (xdisplay, xwin, info->output, 0, 0);
/* Make sure there isn't any left-over output shape on the
* overlay window by setting the whole screen to be an
* output region.
*
* Note: there doesn't seem to be any real chance of that
* because the X server will destroy the overlay window
* when the last client using it exits.
*/
XFixesSetWindowShapeRegion (xdisplay, info->output, ShapeBounding, 0, 0, None);
do_set_stage_input_region (screen, info->pending_input_region);
if (info->pending_input_region != None)
{
XFixesDestroyRegion (xdisplay, info->pending_input_region);
info->pending_input_region = None;
}
clutter_actor_show (info->overlay_group);
clutter_actor_show (info->stage);
}
