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mutter/src/compositor/compositor.c
Owen W. Taylor b77b0a3d81 Load one copy of plugins early 
Although multi-screen support has not been tested and probably
doesn't fully work, the basic setup for multi-screen is that
we have the same list of plugins for all screens, but a different
instance of the plugins for each screen.

To allow plugins to do setup that is screen independent and needs
to occur early in the setup process, we identify a "default plugin
manager" and load (but not start) that plugin manager's plugins
immediately after we know our list of plugins.

That plugin manager is then reused for the first screen we open
and the plugins are started at that time. Separate plugin managers
are loaded and started for any other screens we open.

(A plugin could keep track of whether the screen-independent
setup has been done in a static variable, or it could do everything
in a way that is safe to do repeatedly.)

https://bugzilla.gnome.org/show_bug.cgi?id=615586
2010-04-13 13:53:55 -04:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include <config.h>
#include <clutter/x11/clutter-x11.h>
#include "screen.h"
#include "errors.h"
#include "window.h"
#include "compositor-private.h"
#include "compositor-mutter.h"
#include "xprops.h"
#include "prefs.h"
#include "mutter-window-private.h"
#include "mutter-window-group.h"
#include "../core/window-private.h" /* to check window->hidden */
#include "../core/display-private.h" /* for meta_display_lookup_x_window() */
#include <X11/extensions/shape.h>
#include <X11/extensions/Xcomposite.h>
/* #define DEBUG_TRACE g_print */
#define DEBUG_TRACE(X)
static inline gboolean
composite_at_least_version (MetaDisplay *display, int maj, int min)
{
static int major = -1;
static int minor = -1;
if (major == -1)
meta_display_get_compositor_version (display, &major, &minor);
return (major > maj || (major == maj && minor >= min));
}
static void sync_actor_stacking (GList *windows);
static void
mutter_finish_workspace_switch (MetaCompScreen *info)
{
GList *l;
/* Finish hiding and showing actors for the new workspace */
for (l = info->windows; l; l = l->next)
mutter_window_sync_visibility (l->data);
/*
* Fix up stacking order in case the plugin messed it up.
*/
sync_actor_stacking (info->windows);
/* printf ("... FINISHED DESKTOP SWITCH\n"); */
}
void
mutter_switch_workspace_completed (MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
/* FIXME -- must redo stacking order */
info->switch_workspace_in_progress--;
if (info->switch_workspace_in_progress < 0)
{
g_warning ("Error in workspace_switch accounting!");
info->switch_workspace_in_progress = 0;
}
if (!info->switch_workspace_in_progress)
mutter_finish_workspace_switch (info);
}
void
meta_compositor_destroy (MetaCompositor *compositor)
{
clutter_threads_remove_repaint_func (compositor->repaint_func_id);
}
static void
add_win (MetaWindow *window)
{
MetaScreen *screen = meta_window_get_screen (window);
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
g_return_if_fail (info != NULL);
mutter_window_new (window);
sync_actor_stacking (info->windows);
}
static void
process_damage (MetaCompositor *compositor,
XDamageNotifyEvent *event,
MetaWindow *window)
{
MutterWindow *cw;
if (window == NULL)
return;
cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
if (cw == NULL)
return;
mutter_window_process_damage (cw, event);
}
#ifdef HAVE_SHAPE
static void
process_shape (MetaCompositor *compositor,
XShapeEvent *event,
MetaWindow *window)
{
MutterWindow *cw;
if (window == NULL)
return;
cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
if (cw == NULL)
return;
if (event->kind == ShapeBounding)
{
mutter_window_update_shape (cw, event->shaped);
}
}
#endif
static void
process_property_notify (MetaCompositor *compositor,
XPropertyEvent *event,
MetaWindow *window)
{
MetaDisplay *display = compositor->display;
MutterWindow *cw;
if (window == NULL)
return;
cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
if (cw == NULL)
return;
/* Check for the opacity changing */
if (event->atom == compositor->atom_net_wm_window_opacity)
{
mutter_window_update_opacity (cw);
DEBUG_TRACE ("process_property_notify: net_wm_window_opacity\n");
return;
}
else if (event->atom == meta_display_get_atom (display,
META_ATOM__NET_WM_WINDOW_TYPE))
{
mutter_window_update_window_type (cw);
DEBUG_TRACE ("process_property_notify: net_wm_type\n");
return;
}
DEBUG_TRACE ("process_property_notify: unknown\n");
}
static Window
get_output_window (MetaScreen *screen)
{
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdisplay = meta_display_get_xdisplay (display);
Window output, xroot;
XWindowAttributes attr;
long event_mask;
xroot = meta_screen_get_xroot (screen);
event_mask = FocusChangeMask |
ExposureMask |
EnterWindowMask | LeaveWindowMask |
PointerMotionMask |
PropertyChangeMask |
ButtonPressMask | ButtonReleaseMask |
KeyPressMask | KeyReleaseMask;
output = XCompositeGetOverlayWindow (xdisplay, xroot);
if (XGetWindowAttributes (xdisplay, output, &attr))
{
event_mask |= attr.your_event_mask;
}
XSelectInput (xdisplay, output, event_mask);
return output;
}
ClutterActor *
mutter_get_stage_for_screen (MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
if (!info)
return NULL;
return info->stage;
}
ClutterActor *
mutter_get_overlay_group_for_screen (MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
if (!info)
return NULL;
return info->overlay_group;
}
ClutterActor *
mutter_get_window_group_for_screen (MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
if (!info)
return NULL;
return info->window_group;
}
GList *
mutter_get_windows (MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
if (!info)
return NULL;
return info->windows;
}
static void
do_set_stage_input_region (MetaScreen *screen,
XserverRegion region)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdpy = meta_display_get_xdisplay (display);
Window xstage = clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage));
XFixesSetWindowShapeRegion (xdpy, xstage, ShapeInput, 0, 0, region);
XFixesSetWindowShapeRegion (xdpy, info->output, ShapeInput, 0, 0, region);
}
void
mutter_set_stage_input_region (MetaScreen *screen,
XserverRegion region)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdpy = meta_display_get_xdisplay (display);
if (info->stage && info->output)
{
do_set_stage_input_region (screen, region);
}
else
{
/* Reset info->pending_input_region if one existed before and set the new
* one to use it later. */
if (info->pending_input_region)
{
XFixesDestroyRegion (xdpy, info->pending_input_region);
info->pending_input_region = None;
}
if (region != None)
{
info->pending_input_region = XFixesCreateRegion (xdpy, NULL, 0);
XFixesCopyRegion (xdpy, info->pending_input_region, region);
}
}
}
void
mutter_empty_stage_input_region (MetaScreen *screen)
{
/* Using a static region here is a bit hacky, but Metacity never opens more than
* one XDisplay, so it works fine. */
static XserverRegion region = None;
if (region == None)
{
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdpy = meta_display_get_xdisplay (display);
region = XFixesCreateRegion (xdpy, NULL, 0);
}
mutter_set_stage_input_region (screen, region);
}
gboolean
mutter_begin_modal_for_plugin (MetaScreen *screen,
MutterPlugin *plugin,
Window grab_window,
Cursor cursor,
MetaModalOptions options,
guint32 timestamp)
{
/* To some extent this duplicates code in meta_display_begin_grab_op(), but there
* are significant differences in how we handle grabs that make it difficult to
* merge the two.
*/
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdpy = meta_display_get_xdisplay (display);
MetaCompositor *compositor = display->compositor;
gboolean pointer_grabbed = FALSE;
gboolean keyboard_grabbed = FALSE;
int result;
if (compositor->modal_plugin != NULL || display->grab_op != META_GRAB_OP_NONE)
return FALSE;
if ((options & META_MODAL_POINTER_ALREADY_GRABBED) == 0)
{
result = XGrabPointer (xdpy, grab_window,
False, /* owner_events */
(ButtonPressMask | ButtonReleaseMask |
EnterWindowMask | LeaveWindowMask | PointerMotionMask),
GrabModeAsync, GrabModeAsync,
None, /* confine to */
cursor,
timestamp);
if (result != Success)
goto fail;
pointer_grabbed = TRUE;
}
if ((options & META_MODAL_KEYBOARD_ALREADY_GRABBED) == 0)
{
result = XGrabKeyboard (xdpy, grab_window,
False, /* owner_events */
GrabModeAsync, GrabModeAsync,
timestamp);
if (result != Success)
goto fail;
keyboard_grabbed = TRUE;
}
display->grab_op = META_GRAB_OP_COMPOSITOR;
display->grab_window = NULL;
display->grab_screen = screen;
display->grab_have_pointer = TRUE;
display->grab_have_keyboard = TRUE;
compositor->modal_plugin = plugin;
return TRUE;
fail:
if (pointer_grabbed)
XUngrabPointer (xdpy, timestamp);
if (keyboard_grabbed)
XUngrabKeyboard (xdpy, timestamp);
return FALSE;
}
void
mutter_end_modal_for_plugin (MetaScreen *screen,
MutterPlugin *plugin,
guint32 timestamp)
{
MetaDisplay *display = meta_screen_get_display (screen);
Display *xdpy = meta_display_get_xdisplay (display);
MetaCompositor *compositor = display->compositor;
g_return_if_fail (compositor->modal_plugin == plugin);
XUngrabPointer (xdpy, timestamp);
XUngrabKeyboard (xdpy, timestamp);
display->grab_op = META_GRAB_OP_NONE;
display->grab_window = NULL;
display->grab_screen = NULL;
display->grab_have_pointer = FALSE;
display->grab_have_keyboard = FALSE;
compositor->modal_plugin = NULL;
}
/* This is used when reloading plugins to make sure we don't have
* a left-over modal grab for this screen.
*/
void
mutter_check_end_modal (MetaScreen *screen)
{
MetaDisplay *display = meta_screen_get_display (screen);
MetaCompositor *compositor = display->compositor;
if (compositor->modal_plugin &&
mutter_plugin_get_screen (compositor->modal_plugin) == screen)
{
mutter_end_modal_for_plugin (screen,
compositor->modal_plugin,
CurrentTime);
}
}
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;
/* Check if the screen is already managed */
if (meta_screen_get_compositor_data (screen))
return;
meta_error_trap_push_with_return (display);
XCompositeRedirectSubwindows (xdisplay, xroot, CompositeRedirectManual);
XSync (xdisplay, FALSE);
if (meta_error_trap_pop_with_return (display, FALSE))
{
g_warning ("Another compositing manager is running on screen %i",
screen_number);
return;
}
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_get_default ();
meta_screen_get_size (screen, &width, &height);
clutter_actor_set_size (info->stage, width, height);
xwin = clutter_x11_get_stage_window (CLUTTER_STAGE (info->stage));
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 = mutter_window_group_new (screen);
info->overlay_group = clutter_group_new ();
info->hidden_group = clutter_group_new ();
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 =
mutter_plugin_manager_get (screen);
if (info->plugin_mgr != mutter_plugin_manager_get_default ())
{
/* The default plugin manager has been initialized during
* global preferences load.
*/
if (!mutter_plugin_manager_load (info->plugin_mgr))
g_critical ("failed to load plugins");
}
if (!mutter_plugin_manager_initialize (info->plugin_mgr))
g_critical ("failed to initialize plugins");
/*
* 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);
}
void
meta_compositor_unmanage_screen (MetaCompositor *compositor,
MetaScreen *screen)
{
}
void
meta_compositor_add_window (MetaCompositor *compositor,
MetaWindow *window)
{
MetaScreen *screen = meta_window_get_screen (window);
MetaDisplay *display = meta_screen_get_display (screen);
DEBUG_TRACE ("meta_compositor_add_window\n");
meta_error_trap_push (display);
add_win (window);
meta_error_trap_pop (display, FALSE);
}
void
meta_compositor_remove_window (MetaCompositor *compositor,
MetaWindow *window)
{
MutterWindow *cw = NULL;
DEBUG_TRACE ("meta_compositor_remove_window\n");
cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
if (!cw)
return;
mutter_window_destroy (cw);
}
void
meta_compositor_set_updates (MetaCompositor *compositor,
MetaWindow *window,
gboolean updates)
{
}
static gboolean
is_grabbed_event (XEvent *event)
{
switch (event->xany.type)
{
case ButtonPress:
case ButtonRelease:
case EnterNotify:
case LeaveNotify:
case MotionNotify:
case KeyPress:
case KeyRelease:
return TRUE;
}
return FALSE;
}
gboolean
meta_compositor_process_event (MetaCompositor *compositor,
XEvent *event,
MetaWindow *window)
{
if (compositor->modal_plugin && is_grabbed_event (event))
{
MutterPluginClass *klass = MUTTER_PLUGIN_GET_CLASS (compositor->modal_plugin);
if (klass->xevent_filter)
klass->xevent_filter (compositor->modal_plugin, event);
/* We always consume events even if the plugin says it didn't handle them;
* exclusive is exclusive */
return TRUE;
}
if (window)
{
MetaCompScreen *info;
MetaScreen *screen;
screen = meta_window_get_screen (window);
info = meta_screen_get_compositor_data (screen);
if (mutter_plugin_manager_xevent_filter (info->plugin_mgr, event))
{
DEBUG_TRACE ("meta_compositor_process_event (filtered,window==NULL)\n");
return TRUE;
}
}
else
{
GSList *l;
l = meta_display_get_screens (compositor->display);
while (l)
{
MetaScreen *screen = l->data;
MetaCompScreen *info;
info = meta_screen_get_compositor_data (screen);
if (mutter_plugin_manager_xevent_filter (info->plugin_mgr, event))
{
DEBUG_TRACE ("meta_compositor_process_event (filtered,window==NULL)\n");
return TRUE;
}
l = l->next;
}
}
switch (event->type)
{
case PropertyNotify:
process_property_notify (compositor, (XPropertyEvent *) event, window);
break;
default:
if (event->type == meta_display_get_damage_event_base (compositor->display) + XDamageNotify)
{
/* Core code doesn't handle damage events, so we need to extract the MetaWindow
* ourselves
*/
if (window == NULL)
{
Window xwin = ((XDamageNotifyEvent *) event)->drawable;
window = meta_display_lookup_x_window (compositor->display, xwin);
}
DEBUG_TRACE ("meta_compositor_process_event (process_damage)\n");
process_damage (compositor, (XDamageNotifyEvent *) event, window);
}
#ifdef HAVE_SHAPE
else if (event->type == meta_display_get_shape_event_base (compositor->display) + ShapeNotify)
{
DEBUG_TRACE ("meta_compositor_process_event (process_shape)\n");
process_shape (compositor, (XShapeEvent *) event, window);
}
#endif /* HAVE_SHAPE */
break;
}
/* Clutter needs to know about MapNotify events otherwise it will
think the stage is invisible */
if (event->type == MapNotify)
clutter_x11_handle_event (event);
/* The above handling is basically just "observing" the events, so we return
* FALSE to indicate that the event should not be filtered out; if we have
* GTK+ windows in the same process, GTK+ needs the ConfigureNotify event, for example.
*/
return FALSE;
}
void
meta_compositor_show_window (MetaCompositor *compositor,
MetaWindow *window,
MetaCompEffect effect)
{
MutterWindow *cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
DEBUG_TRACE ("meta_compositor_show_window\n");
if (!cw)
return;
mutter_window_show (cw, effect);
}
void
meta_compositor_hide_window (MetaCompositor *compositor,
MetaWindow *window,
MetaCompEffect effect)
{
MutterWindow *cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
DEBUG_TRACE ("meta_compositor_hide_window\n");
if (!cw)
return;
mutter_window_hide (cw, effect);
}
void
meta_compositor_maximize_window (MetaCompositor *compositor,
MetaWindow *window,
MetaRectangle *old_rect,
MetaRectangle *new_rect)
{
MutterWindow *cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
DEBUG_TRACE ("meta_compositor_maximize_window\n");
if (!cw)
return;
mutter_window_maximize (cw, old_rect, new_rect);
}
void
meta_compositor_unmaximize_window (MetaCompositor *compositor,
MetaWindow *window,
MetaRectangle *old_rect,
MetaRectangle *new_rect)
{
MutterWindow *cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
DEBUG_TRACE ("meta_compositor_unmaximize_window\n");
if (!cw)
return;
mutter_window_unmaximize (cw, old_rect, new_rect);
}
void
meta_compositor_update_workspace_geometry (MetaCompositor *compositor,
MetaWorkspace *workspace)
{
#if 0
/* FIXME -- should do away with this function in favour of MetaWorkspace
* signal.
*/
MetaScreen *screen = meta_workspace_get_screen (workspace);
MetaCompScreen *info;
MutterPluginManager *mgr;
DEBUG_TRACE ("meta_compositor_update_workspace_geometry\n");
info = meta_screen_get_compositor_data (screen);
mgr = info->plugin_mgr;
if (!mgr || !workspace)
return;
mutter_plugin_manager_update_workspace (mgr, workspace);
#endif
}
void
meta_compositor_switch_workspace (MetaCompositor *compositor,
MetaScreen *screen,
MetaWorkspace *from,
MetaWorkspace *to,
MetaMotionDirection direction)
{
MetaCompScreen *info;
gint to_indx, from_indx;
info = meta_screen_get_compositor_data (screen);
to_indx = meta_workspace_index (to);
from_indx = meta_workspace_index (from);
DEBUG_TRACE ("meta_compositor_switch_workspace\n");
if (!info) /* During startup before manage_screen() */
return;
info->switch_workspace_in_progress++;
if (!info->plugin_mgr ||
!mutter_plugin_manager_switch_workspace (info->plugin_mgr,
(const GList **)&info->windows,
from_indx,
to_indx,
direction))
{
info->switch_workspace_in_progress--;
/* We have to explicitely call this to fix up stacking order of the
* actors; this is because the abs stacking position of actors does not
* necessarily change during the window hiding/unhiding, only their
* relative position toward the destkop window.
*/
mutter_finish_workspace_switch (info);
}
}
static void
sync_actor_stacking (GList *windows)
{
GList *tmp;
/* NB: The first entry in the list is stacked the lowest */
for (tmp = g_list_last (windows); tmp != NULL; tmp = tmp->prev)
{
MutterWindow *cw = tmp->data;
clutter_actor_lower_bottom (CLUTTER_ACTOR (cw));
}
}
void
meta_compositor_sync_stack (MetaCompositor *compositor,
MetaScreen *screen,
GList *stack)
{
GList *old_stack;
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
DEBUG_TRACE ("meta_compositor_sync_stack\n");
/* This is painful because hidden windows that we are in the process
* of animating out of existence. They'll be at the bottom of the
* stack of X windows, but we want to leave them in their old position
* until the animation effect finishes.
*/
/* Sources: first window is the highest */
stack = g_list_copy (stack); /* The new stack of MetaWindow */
old_stack = g_list_reverse (info->windows); /* The old stack of MutterWindow */
info->windows = NULL;
while (TRUE)
{
MutterWindow *old_actor = NULL, *stack_actor = NULL, *actor;
MetaWindow *old_window = NULL, *stack_window = NULL, *window;
/* Find the remaining top actor in our existing stack (ignoring
* windows that have been hidden and are no longer animating) */
while (old_stack)
{
old_actor = old_stack->data;
old_window = mutter_window_get_meta_window (old_actor);
if (old_window->hidden &&
!mutter_window_effect_in_progress (old_actor))
old_stack = g_list_delete_link (old_stack, old_stack);
else
break;
}
/* And the remaining top actor in the new stack */
while (stack)
{
stack_window = stack->data;
stack_actor = MUTTER_WINDOW (meta_window_get_compositor_private (stack_window));
if (!stack_actor)
{
meta_verbose ("Failed to find corresponding MutterWindow "
"for window %s\n", meta_window_get_description (stack_window));
stack = g_list_delete_link (stack, stack);
}
else
break;
}
if (!old_actor && !stack_actor) /* Nothing more to stack */
break;
/* We usually prefer the window in the new stack, but if if we
* found a hidden window in the process of being animated out
* of existence in the old stack we use that instead. We've
* filtered out non-animating hidden windows above.
*/
if (old_actor &&
(!stack_actor || old_window->hidden))
{
actor = old_actor;
window = old_window;
}
else
{
actor = stack_actor;
window = stack_window;
}
/* OK, we know what actor we want next. Add it to our window
* list, and remove it from both source lists. (It will
* be at the front of at least one, hopefully it will be
* near the front of the other.)
*/
info->windows = g_list_prepend (info->windows, actor);
stack = g_list_remove (stack, window);
old_stack = g_list_remove (old_stack, actor);
}
sync_actor_stacking (info->windows);
}
void
meta_compositor_window_mapped (MetaCompositor *compositor,
MetaWindow *window)
{
MutterWindow *cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
DEBUG_TRACE ("meta_compositor_window_mapped\n");
if (!cw)
return;
mutter_window_mapped (cw);
}
void
meta_compositor_window_unmapped (MetaCompositor *compositor,
MetaWindow *window)
{
MutterWindow *cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
DEBUG_TRACE ("meta_compositor_window_unmapped\n");
if (!cw)
return;
mutter_window_unmapped (cw);
}
void
meta_compositor_sync_window_geometry (MetaCompositor *compositor,
MetaWindow *window)
{
MutterWindow *cw = MUTTER_WINDOW (meta_window_get_compositor_private (window));
MetaScreen *screen = meta_window_get_screen (window);
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
DEBUG_TRACE ("meta_compositor_sync_window_geometry\n");
g_return_if_fail (info);
if (!cw)
return;
mutter_window_sync_actor_position (cw);
}
void
meta_compositor_sync_screen_size (MetaCompositor *compositor,
MetaScreen *screen,
guint width,
guint height)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
DEBUG_TRACE ("meta_compositor_sync_screen_size\n");
g_return_if_fail (info);
clutter_actor_set_size (info->stage, width, height);
meta_verbose ("Changed size for stage on screen %d to %dx%d\n",
meta_screen_get_screen_number (screen),
width, height);
}
static void
pre_paint_windows (MetaCompScreen *info)
{
GList *l;
for (l = info->windows; l; l = l->next)
mutter_window_pre_paint (l->data);
}
static gboolean
mutter_repaint_func (gpointer data)
{
MetaCompositor *compositor = data;
GSList *screens = meta_display_get_screens (compositor->display);
GSList *l;
for (l = screens; l; l = l->next)
{
MetaScreen *screen = l->data;
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
if (!info)
continue;
pre_paint_windows (info);
}
return TRUE;
}
MetaCompositor *
meta_compositor_new (MetaDisplay *display)
{
char *atom_names[] = {
"_XROOTPMAP_ID",
"_XSETROOT_ID",
"_NET_WM_WINDOW_OPACITY",
};
Atom atoms[G_N_ELEMENTS(atom_names)];
MetaCompositor *compositor;
Display *xdisplay = meta_display_get_xdisplay (display);
if (!composite_at_least_version (display, 0, 3))
return NULL;
compositor = g_new0 (MetaCompositor, 1);
compositor->display = display;
if (g_getenv("MUTTER_DISABLE_MIPMAPS"))
compositor->no_mipmaps = TRUE;
meta_verbose ("Creating %d atoms\n", (int) G_N_ELEMENTS (atom_names));
XInternAtoms (xdisplay, atom_names, G_N_ELEMENTS (atom_names),
False, atoms);
compositor->atom_x_root_pixmap = atoms[0];
compositor->atom_x_set_root = atoms[1];
compositor->atom_net_wm_window_opacity = atoms[2];
compositor->repaint_func_id = clutter_threads_add_repaint_func (mutter_repaint_func,
compositor,
NULL);
return compositor;
}
Window
mutter_get_overlay_window (MetaScreen *screen)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
return info->output;
}
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