static void
meta_background_actor_get_preferred_height (ClutterActor *actor,
gfloat for_width,
gfloat *min_height_p,
gfloat *natural_height_p)
{
MetaBackgroundActor *self = META_BACKGROUND_ACTOR (actor);
MetaBackgroundActorPrivate *priv = self->priv;
int width, height;
meta_screen_get_size (priv->background->screen, &width, &height);
if (min_height_p)
*min_height_p = height;
if (natural_height_p)
*natural_height_p = height;
}
static void reposition_switcher(MetaSwitcher* self)
{
MetaSwitcherPrivate* priv = self->priv;
MetaScreen* screen = meta_plugin_get_screen(priv->plugin);
gint screen_width = 0, screen_height = 0;
meta_screen_get_size(screen, &screen_width, &screen_height);
clutter_actor_save_easing_state(priv->top);
clutter_actor_set_easing_duration(priv->top, 400);
clutter_actor_set_easing_mode(priv->top, CLUTTER_LINEAR);
gfloat w = clutter_actor_get_width(priv->top), h = clutter_actor_get_height(priv->top),
tx = (screen_width - w)/2, ty = (screen_height - h)/2;
clutter_actor_set_position(priv->top, tx, ty);
clutter_actor_restore_easing_state(priv->top);
}
gboolean meta_switcher_show(MetaSwitcher* self)
{
MetaSwitcherPrivate* priv = self->priv;
int screen_width, screen_height;
MetaScreen* screen = meta_plugin_get_screen(priv->plugin);
priv->workspace = meta_screen_get_active_workspace(screen);
meta_screen_get_size(screen, &screen_width, &screen_height);
meta_switcher_present_list(self);
if (priv->apps == NULL || priv->apps->len == 0) goto _end;
_capture_desktop(self);
clutter_content_invalidate(clutter_actor_get_content(priv->top));
ClutterActor* stage = meta_get_stage_for_screen(screen);
clutter_actor_insert_child_above(stage, priv->top, NULL);
clutter_actor_show(priv->top);
if (!meta_plugin_begin_modal(priv->plugin, 0, clutter_get_current_event_time())) {
if (!meta_plugin_begin_modal(priv->plugin, META_MODAL_POINTER_ALREADY_GRABBED,
clutter_get_current_event_time())) {
g_warning("can not be modal");
goto _end;
}
}
meta_disable_unredirect_for_screen(screen);
priv->modaled = TRUE;
priv->previous_focused = clutter_stage_get_key_focus(CLUTTER_STAGE(stage));
if (priv->previous_focused == stage) priv->previous_focused = NULL;
clutter_stage_set_key_focus(CLUTTER_STAGE(stage), priv->top);
clutter_actor_grab_key_focus(priv->top);
return TRUE;
_end:
clutter_actor_hide(priv->top);
return FALSE;
}
static void
update_wrap_mode (MetaScreenBackground *background)
{
GSList *l;
int width, height;
meta_screen_get_size (background->screen, &width, &height);
/* We turn off repeating when we have a full-screen pixmap to keep from
* getting artifacts from one side of the image sneaking into the other
* side of the image via bilinear filtering.
*/
if (width == background->texture_width && height == background->texture_height)
background->wrap_mode = COGL_MATERIAL_WRAP_MODE_CLAMP_TO_EDGE;
else
background->wrap_mode = COGL_MATERIAL_WRAP_MODE_REPEAT;
for (l = background->actors; l; l = l->next)
update_wrap_mode_of_actor (l->data);
}
static ClutterActor* load_icon_for_window(MetaSwitcher* self, MetaWindow* window)
{
MetaSwitcherPrivate *priv = self->priv;
MetaScreen *screen = meta_plugin_get_screen(priv->plugin);
ShellWindowTracker* tracker = shell_window_tracker_get_default();
ShellApp* app = shell_window_tracker_get_window_app(tracker, window);
gint screen_width, screen_height, app_icon_size = APP_ICON_SIZE;
/* TODO: @sonald scale app icon size at first */
meta_screen_get_size(screen, &screen_width, &screen_height);
if (priv->apps->len)
app_icon_size = (screen_width - priv->apps->len * APP_ICON_PADDING ) /
priv->apps->len;
if (app_icon_size > APP_ICON_SIZE)
app_icon_size = APP_ICON_SIZE;
if (app)
return shell_app_create_icon_texture(app, app_icon_size);
return NULL;
}
/**
* meta_shape_cow_for_window:
* @compositor: A #MetaCompositor
* @window: (nullable): A #MetaWindow to shape the COW for
*
* Sets an bounding shape on the COW so that the given window
* is exposed. If @window is %NULL it clears the shape again.
*
* Used so we can unredirect windows, by shaping away the part
* of the COW, letting the raw window be seen through below.
*/
static void
meta_shape_cow_for_window (MetaCompositor *compositor,
MetaWindow *window)
{
MetaDisplay *display = compositor->display;
Display *xdisplay = meta_display_get_xdisplay (display);
if (window == NULL)
XFixesSetWindowShapeRegion (xdisplay, compositor->output, ShapeBounding, 0, 0, None);
else
{
XserverRegion output_region;
XRectangle screen_rect, window_bounds;
int width, height;
MetaRectangle rect;
meta_window_get_frame_rect (window, &rect);
window_bounds.x = rect.x;
window_bounds.y = rect.y;
window_bounds.width = rect.width;
window_bounds.height = rect.height;
meta_screen_get_size (display->screen, &width, &height);
screen_rect.x = 0;
screen_rect.y = 0;
screen_rect.width = width;
screen_rect.height = height;
output_region = XFixesCreateRegion (xdisplay, &window_bounds, 1);
XFixesInvertRegion (xdisplay, output_region, &screen_rect, output_region);
XFixesSetWindowShapeRegion (xdisplay, compositor->output, ShapeBounding, 0, 0, output_region);
XFixesDestroyRegion (xdisplay, output_region);
}
}
/*
* Shapes the cow so that the given window is exposed,
* when metaWindow is NULL it clears the shape again
*/
static void
meta_shape_cow_for_window (MetaScreen *screen,
MetaWindow *metaWindow)
{
MetaCompScreen *info = meta_screen_get_compositor_data (screen);
Display *xdisplay = meta_display_get_xdisplay (meta_screen_get_display (screen));
if (metaWindow == NULL)
XFixesSetWindowShapeRegion (xdisplay, info->output, ShapeBounding, 0, 0, None);
else
{
XserverRegion output_region;
XRectangle screen_rect, window_bounds;
int width, height;
MetaRectangle rect;
meta_window_get_outer_rect (metaWindow, &rect);
window_bounds.x = rect.x;
window_bounds.y = rect.y;
window_bounds.width = rect.width;
window_bounds.height = rect.height;
meta_screen_get_size (screen, &width, &height);
screen_rect.x = 0;
screen_rect.y = 0;
screen_rect.width = width;
screen_rect.height = height;
output_region = XFixesCreateRegion (xdisplay, &window_bounds, 1);
XFixesInvertRegion (xdisplay, output_region, &screen_rect, output_region);
XFixesSetWindowShapeRegion (xdisplay, info->output, ShapeBounding, 0, 0, output_region);
XFixesDestroyRegion (xdisplay, output_region);
}
}
static void
meta_window_group_paint (ClutterActor *actor)
{
cairo_region_t *clip_region;
cairo_region_t *unobscured_region;
cairo_rectangle_int_t visible_rect, clip_rect;
int paint_x_origin, paint_y_origin;
int screen_width, screen_height;
MetaWindowGroup *window_group = META_WINDOW_GROUP (actor);
ClutterActor *stage = clutter_actor_get_stage (actor);
meta_screen_get_size (window_group->screen, &screen_width, &screen_height);
/* Normally we expect an actor to be drawn at it's position on the screen.
* However, if we're inside the paint of a ClutterClone, that won't be the
* case and we need to compensate. We look at the position of the window
* group under the current model-view matrix and the position of the actor.
* If they are both simply integer translations, then we can compensate
* easily, otherwise we give up.
*
* Possible cleanup: work entirely in paint space - we can compute the
* combination of the model-view matrix with the local matrix for each child
* actor and get a total transformation for that actor for how we are
* painting currently, and never worry about how actors are positioned
* on the stage.
*/
if (!meta_actor_painting_untransformed (screen_width, screen_height, &paint_x_origin, &paint_y_origin) ||
!meta_actor_is_untransformed (actor, NULL, NULL))
{
CLUTTER_ACTOR_CLASS (meta_window_group_parent_class)->paint (actor);
return;
}
visible_rect.x = visible_rect.y = 0;
visible_rect.width = clutter_actor_get_width (CLUTTER_ACTOR (stage));
visible_rect.height = clutter_actor_get_height (CLUTTER_ACTOR (stage));
unobscured_region = cairo_region_create_rectangle (&visible_rect);
/* Get the clipped redraw bounds from Clutter so that we can avoid
* painting shadows on windows that don't need to be painted in this
* frame. In the case of a multihead setup with mismatched monitor
* sizes, we could intersect this with an accurate union of the
* monitors to avoid painting shadows that are visible only in the
* holes. */
clutter_stage_get_redraw_clip_bounds (CLUTTER_STAGE (stage),
&clip_rect);
clip_region = cairo_region_create_rectangle (&clip_rect);
cairo_region_translate (clip_region, -paint_x_origin, -paint_y_origin);
meta_cullable_cull_out (META_CULLABLE (window_group), unobscured_region, clip_region);
cairo_region_destroy (unobscured_region);
cairo_region_destroy (clip_region);
CLUTTER_ACTOR_CLASS (meta_window_group_parent_class)->paint (actor);
meta_cullable_reset_culling (META_CULLABLE (window_group));
}
static void
switch_workspace (MetaPlugin *plugin,
gint from, gint to,
MetaMotionDirection direction)
{
MetaScreen *screen;
MetaDefaultPluginPrivate *priv = META_DEFAULT_PLUGIN (plugin)->priv;
GList *l;
ClutterActor *workspace0 = clutter_group_new ();
ClutterActor *workspace1 = clutter_group_new ();
ClutterActor *stage;
int screen_width, screen_height;
ClutterAnimation *animation;
screen = meta_plugin_get_screen (plugin);
stage = meta_get_stage_for_screen (screen);
meta_screen_get_size (screen,
&screen_width,
&screen_height);
clutter_actor_set_anchor_point (workspace1,
screen_width,
screen_height);
clutter_actor_set_position (workspace1,
screen_width,
screen_height);
clutter_actor_set_scale (workspace1, 0.0, 0.0);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), workspace1);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), workspace0);
if (from == to)
{
meta_plugin_switch_workspace_completed (plugin);
return;
}
l = g_list_last (meta_get_window_actors (screen));
while (l)
{
MetaWindowActor *window_actor = l->data;
MetaWindow *window = meta_window_actor_get_meta_window (window_actor);
MetaWorkspace *workspace;
ActorPrivate *apriv = get_actor_private (window_actor);
ClutterActor *actor = CLUTTER_ACTOR (window_actor);
gint win_workspace;
workspace = meta_window_get_workspace (window);
win_workspace = meta_workspace_index (workspace);
if (win_workspace == to || win_workspace == from)
{
apriv->orig_parent = clutter_actor_get_parent (actor);
clutter_actor_reparent (actor,
win_workspace == to ? workspace1 : workspace0);
clutter_actor_show_all (actor);
clutter_actor_raise_top (actor);
}
else if (win_workspace < 0)
{
/* Sticky window */
apriv->orig_parent = NULL;
}
else
{
/* Window on some other desktop */
clutter_actor_hide (actor);
apriv->orig_parent = NULL;
}
l = l->prev;
}
priv->desktop1 = workspace0;
priv->desktop2 = workspace1;
animation = clutter_actor_animate (workspace0, CLUTTER_EASE_IN_SINE,
SWITCH_TIMEOUT,
"scale-x", 1.0,
"scale-y", 1.0,
NULL);
priv->tml_switch_workspace1 = clutter_animation_get_timeline (animation);
g_signal_connect (priv->tml_switch_workspace1,
"completed",
G_CALLBACK (on_switch_workspace_effect_complete),
plugin);
animation = clutter_actor_animate (workspace1, CLUTTER_EASE_IN_SINE,
SWITCH_TIMEOUT,
"scale-x", 0.0,
"scale-y", 0.0,
NULL);
priv->tml_switch_workspace2 = clutter_animation_get_timeline (animation);
}
static void
grab_screenshot (ClutterActor *stage,
_screenshot_data *screenshot_data)
{
MetaScreen *screen = shell_global_get_screen (screenshot_data->screenshot->global);
MetaCursorTracker *tracker;
int width, height;
GSimpleAsyncResult *result;
GSettings *settings;
meta_screen_get_size (screen, &width, &height);
do_grab_screenshot (screenshot_data, 0, 0, width, height);
if (meta_screen_get_n_monitors (screen) > 1)
{
cairo_region_t *screen_region = cairo_region_create ();
cairo_region_t *stage_region;
MetaRectangle monitor_rect;
cairo_rectangle_int_t stage_rect;
int i;
cairo_t *cr;
for (i = meta_screen_get_n_monitors (screen) - 1; i >= 0; i--)
{
meta_screen_get_monitor_geometry (screen, i, &monitor_rect);
cairo_region_union_rectangle (screen_region, (const cairo_rectangle_int_t *) &monitor_rect);
}
stage_rect.x = 0;
stage_rect.y = 0;
stage_rect.width = width;
stage_rect.height = height;
stage_region = cairo_region_create_rectangle ((const cairo_rectangle_int_t *) &stage_rect);
cairo_region_xor (stage_region, screen_region);
cairo_region_destroy (screen_region);
cr = cairo_create (screenshot_data->image);
for (i = 0; i < cairo_region_num_rectangles (stage_region); i++)
{
cairo_rectangle_int_t rect;
cairo_region_get_rectangle (stage_region, i, &rect);
cairo_rectangle (cr, (double) rect.x, (double) rect.y, (double) rect.width, (double) rect.height);
cairo_fill (cr);
}
cairo_destroy (cr);
cairo_region_destroy (stage_region);
}
screenshot_data->screenshot_area.x = 0;
screenshot_data->screenshot_area.y = 0;
screenshot_data->screenshot_area.width = width;
screenshot_data->screenshot_area.height = height;
settings = g_settings_new (A11Y_APPS_SCHEMA);
if (screenshot_data->include_cursor &&
!g_settings_get_boolean (settings, MAGNIFIER_ACTIVE_KEY))
{
tracker = meta_cursor_tracker_get_for_screen (screen);
_draw_cursor_image (tracker, screenshot_data->image, screenshot_data->screenshot_area);
}
g_object_unref (settings);
g_signal_handlers_disconnect_by_func (stage, (void *)grab_screenshot, (gpointer)screenshot_data);
result = g_simple_async_result_new (NULL, on_screenshot_written, (gpointer)screenshot_data, grab_screenshot);
g_simple_async_result_run_in_thread (result, write_screenshot_thread, G_PRIORITY_DEFAULT, NULL);
g_object_unref (result);
}
static void _add_app(MetaSwitcher* self, MetaWindow* app, gint* x, gint* y)
{
MetaSwitcherPrivate* priv = self->priv;
if (!priv->icons)
priv->icons = g_hash_table_new(NULL, NULL);
// container
ClutterActor* actor = clutter_actor_new();
WindowPrivate* win_priv = get_window_private(actor);
win_priv->window = app;
win_priv->highlight = FALSE;
g_hash_table_insert(priv->icons, app, actor);
gint w = APP_ACTOR_WIDTH, h = APP_ACTOR_HEIGHT, screen_width, screen_height;
/* TODO: @sonald scale app actor width */
MetaScreen *screen = meta_plugin_get_screen(priv->plugin);
meta_screen_get_size(screen, &screen_width, &screen_height);
if (priv->apps->len)
w = (screen_width - priv->apps->len * APP_ICON_PADDING) / priv->apps->len;
if (w > APP_ACTOR_WIDTH)
w = APP_ACTOR_WIDTH;
// add children
ClutterContent* canvas = clutter_canvas_new();
g_signal_connect(canvas, "draw", G_CALLBACK(on_icon_background_draw), actor);
clutter_canvas_set_size(CLUTTER_CANVAS(canvas), w, h);
ClutterActor* bg = clutter_actor_new();
clutter_actor_set_name(bg, "bg");
clutter_actor_set_content(bg, canvas);
g_object_unref(canvas);
clutter_actor_set_size(bg, w, h);
g_object_set(bg, "x-expand", TRUE, "y-expand", TRUE, "x-align", CLUTTER_ACTOR_ALIGN_FILL,
"y-align", CLUTTER_ACTOR_ALIGN_FILL, NULL);
clutter_actor_add_child(actor, bg);
ClutterActor* icon = load_icon_for_window(self, app);
if (icon) clutter_actor_add_child(actor, icon);
ClutterActor* label = clutter_text_new();
clutter_actor_add_child(actor, label);
clutter_text_set_text(CLUTTER_TEXT(label), meta_window_get_title(app));
clutter_text_set_font_name(CLUTTER_TEXT(label), "Sans 10");
ClutterColor clr = {0xff, 0xff, 0xff, 0xff};
clutter_text_set_color(CLUTTER_TEXT(label), &clr);
clutter_text_set_ellipsize(CLUTTER_TEXT(label), PANGO_ELLIPSIZE_END);
g_object_set(label, "x-align", CLUTTER_ACTOR_ALIGN_CENTER, "y-align", CLUTTER_ACTOR_ALIGN_CENTER, NULL);
gfloat pref_width = clutter_actor_get_width(label);
if (pref_width > w - 10) {
pref_width = w - 10;
clutter_actor_set_width(label, pref_width);
}
/* TODO: @sonald adjust app title position */
clutter_actor_set_position(label, (w - pref_width) / 2, APP_ICON_SIZE + 2);
g_debug("%s: size: %d, %d", __func__, w, h);
clutter_actor_show(actor);
clutter_actor_add_child(priv->top, actor);
*x += w;
}
/*
* This is the Metacity entry point for the effect.
*/
void
mnb_switch_zones_effect (MetaPlugin *plugin,
gint from,
gint to,
MetaMotionDirection direction)
{
GList *w;
gint width, height;
MetaScreen *screen;
ClutterActor *window_group;
if (running++)
{
/*
* We have been called while the effect is already in progress; we need to
* mutter know that we completed the previous run.
*/
if (--running < 0)
{
g_warning (G_STRLOC ": error in running effect accounting!");
running = 0;
}
meta_plugin_switch_workspace_completed (plugin);
}
if ((from == to) && !zones_preview)
{
if (--running < 0)
{
g_warning (G_STRLOC ": error in running effect accounting!");
running = 0;
}
meta_plugin_switch_workspace_completed (plugin);
return;
}
screen = meta_plugin_get_screen (plugin);
if (!zones_preview)
{
ClutterActor *stage;
/* Construct the zones preview actor */
zones_preview = mnb_zones_preview_new ();
g_object_set (G_OBJECT (zones_preview),
"workspace", (gdouble)from,
NULL);
/* Add it to the stage */
stage = meta_get_stage_for_screen (screen);
clutter_container_add_actor (CLUTTER_CONTAINER (stage), zones_preview);
/* Attach to completed signal */
g_signal_connect (zones_preview, "switch-completed",
G_CALLBACK (mnb_switch_zones_completed_cb), plugin);
}
meta_screen_get_size (screen, &width, &height);
g_object_set (G_OBJECT (zones_preview),
"workspace-width", (guint)width,
"workspace-height", (guint)height,
NULL);
mnb_zones_preview_clear (MNB_ZONES_PREVIEW (zones_preview));
mnb_zones_preview_set_n_workspaces (MNB_ZONES_PREVIEW (zones_preview),
meta_screen_get_n_workspaces (screen));
/* Add windows to zone preview actor */
for (w = meta_get_window_actors (screen); w; w = w->next)
{
MetaWindowActor *window_actor = w->data;
gint workspace = meta_window_actor_get_workspace (window_actor);
MetaWindow *window = meta_window_actor_get_meta_window (window_actor);
MetaWindowType type = meta_window_get_window_type (window);
/*
* Only show regular windows that are not sticky (getting stacking order
* right for sticky windows would be really hard, and since they appear
* on each workspace, they do not help in identifying which workspace
* it is).
*/
if ((workspace < 0) ||
meta_window_actor_is_override_redirect (window_actor) ||
(type != META_WINDOW_NORMAL))
continue;
mnb_zones_preview_add_window (MNB_ZONES_PREVIEW (zones_preview), window_actor);
}
/* Make sure it's on top */
window_group = meta_get_window_group_for_screen (screen);
clutter_actor_raise (zones_preview, window_group);
/* Initiate animation */
mnb_zones_preview_change_workspace (MNB_ZONES_PREVIEW (zones_preview), to);
}
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_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);
}
