10 #include <xcb/composite.h>
12 #define ROOT_MASK (XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | \
13 XCB_EVENT_MASK_STRUCTURE_NOTIFY)
15 #define SELECTION_MASK (XCB_EVENT_MASK_STRUCTURE_NOTIFY | \
16 XCB_EVENT_MASK_PROPERTY_CHANGE)
18 static gboolean screen_init(d_screen_t *sc);
19 static xcb_timestamp_t screen_timestamp(d_screen_t *sc);
20 static void screen_add_existing_windows(d_screen_t *sc);
21 static void screen_set_next_repaint(d_screen_t *sc);
24 xcb_window_hash(xcb_window_t *w) { return *w; }
27 xcb_window_equal(xcb_window_t *w1, xcb_window_t *w2) { return *w1 == *w2; }
31 screen_new(struct d_display *dpy, int num, xcb_screen_t *xcb)
35 sc = malloc(sizeof(d_screen_t));
42 gettimeofday(&sc->next_repaint, NULL);
43 sc->need_repaint = TRUE;
45 sc->winhash = g_hash_table_new((GHashFunc)xcb_window_hash,
46 (GEqualFunc)xcb_window_equal);
47 sc->stacking = list_new();
48 sc->plugin_data = g_hash_table_new_full((GHashFunc)g_str_hash,
49 (GEqualFunc)g_str_equal,
56 screen_ref(d_screen_t *sc)
62 screen_unref(d_screen_t *sc)
64 if (sc && --sc->ref == 0) {
66 screen_remove_window(sc, sc->root);
68 g_hash_table_unref(sc->winhash);
69 list_unref(sc->stacking);
70 g_hash_table_unref(sc->plugin_data);
76 screen_register(d_screen_t *sc)
80 xcb_intern_atom_cookie_t ack;
81 xcb_intern_atom_reply_t *arep;
82 xcb_get_selection_owner_cookie_t sck;
83 xcb_get_selection_owner_reply_t *srep;
87 w = xcb_generate_id(sc->dpy->conn);
88 event_mask = SELECTION_MASK;
89 xcb_create_window(sc->dpy->conn, XCB_COPY_FROM_PARENT, w, sc->super.root,
90 0, 0, 1, 1, 0, XCB_WINDOW_CLASS_INPUT_ONLY,
91 sc->super.root_visual, XCB_CW_EVENT_MASK, &event_mask);
93 name = g_strdup_printf("_NET_WM_CM_S%d", sc->num);
94 ack = xcb_intern_atom(sc->dpy->conn, FALSE, strlen(name), name);
95 arep = xcb_intern_atom_reply(sc->dpy->conn, ack, NULL);
98 xcb_grab_server(sc->dpy->conn);
100 sck = xcb_get_selection_owner(sc->dpy->conn, arep->atom);
101 srep = xcb_get_selection_owner_reply(sc->dpy->conn, sck, NULL);
102 taken = !!srep->owner;
105 printf(_("screen %d already has a composite manager, skipping\n"),
110 xcb_timestamp_t time;
113 sc->selatom = arep->atom;
115 time = screen_timestamp(sc);
117 xcb_set_selection_owner(sc->dpy->conn, w, arep->atom, time);
118 sck = xcb_get_selection_owner(sc->dpy->conn, arep->atom);
119 srep = xcb_get_selection_owner_reply(sc->dpy->conn, sck, NULL);
120 taken = srep->owner == w;
121 if (taken && screen_init(sc)) {
122 screen_add_existing_windows(sc);
126 xcb_destroy_window(sc->dpy->conn, w);
131 xcb_ungrab_server(sc->dpy->conn);
132 xcb_flush(sc->dpy->conn);
138 screen_init(d_screen_t *sc)
142 xcb_generic_error_t *err;
143 xcb_void_cookie_t redir_ck;
144 xcb_composite_get_overlay_window_cookie_t overlay_ck;
145 xcb_composite_get_overlay_window_reply_t *overlay_rep;
148 xcb_composite_redirect_subwindows(sc->dpy->conn, sc->super.root,
149 XCB_COMPOSITE_REDIRECT_MANUAL);
151 overlay_ck = xcb_composite_get_overlay_window(sc->dpy->conn,
154 /* check that the redirect worked */
155 err = xcb_request_check(sc->dpy->conn, redir_ck);
157 printf(_("unable to redirect rendering, another composite manager must be running"));
162 /* get the overlay window reply */
163 overlay_rep = xcb_composite_get_overlay_window_reply(sc->dpy->conn,
167 printf(_("unable to get the composite overlay window\n"));
170 sc->overlay = overlay_rep->overlay_win;
174 mask = SELECTION_MASK;
175 xcb_change_window_attributes(sc->dpy->conn, sc->selwin,
176 XCB_CW_EVENT_MASK, &mask);
178 xcb_change_window_attributes(sc->dpy->conn, sc->super.root,
179 XCB_CW_EVENT_MASK, &mask);
185 screen_add_window(d_screen_t *sc, xcb_window_t wid)
189 w = window_new(wid, sc);
190 g_hash_table_insert(sc->winhash, &w->id, w);
192 printf("screen added window 0x%x\n", w->id);
197 screen_add_existing_windows(d_screen_t *sc)
199 xcb_query_tree_cookie_t ck;
200 xcb_query_tree_reply_t *rep;
202 sc->root = screen_add_window(sc, sc->super.root);
204 ck = xcb_query_tree(sc->dpy->conn, sc->super.root);
205 rep = xcb_query_tree_reply(sc->dpy->conn, ck, NULL);
207 xcb_window_iterator_t it;
209 it = xcb_query_tree_children_iterator(rep);
210 for (; it.rem; xcb_window_next(&it))
211 screen_add_window(sc, *it.data);
218 screen_remove_window(d_screen_t *sc, struct d_window *w)
220 printf("screen removed window 0x%x\n", w->id);
222 g_hash_table_remove(sc->winhash, &w->id);
223 sc->window_become_zombie(w);
228 screen_find_window(d_screen_t *sc, xcb_window_t id)
230 return g_hash_table_lookup(sc->winhash, &id);
233 static xcb_timestamp_t
234 screen_timestamp(d_screen_t *sc)
236 xcb_void_cookie_t ck;
237 xcb_timestamp_t time;
239 ck = xcb_change_property(sc->dpy->conn, XCB_PROP_MODE_REPLACE, sc->selwin,
240 sc->selatom, sc->selatom, 32, 0, NULL);
241 xcb_flush(sc->dpy->conn);
243 xcb_generic_event_t *ev;
245 ev = xcb_wait_for_event(sc->dpy->conn);
247 printf(_("IO error\n"));
251 /* expect errors.. */
252 if (!ev->response_type) {
253 display_error(sc->dpy, (xcb_generic_error_t*)ev);
258 if (ev->response_type == XCB_PROPERTY_NOTIFY &&
259 ev->full_sequence == ck.sequence)
261 time = ((xcb_property_notify_event_t*)ev)->time;
266 printf("created timestamp %lu\n", (unsigned long) time);
271 screen_stacking_add(d_screen_t *sc, struct d_window *w)
273 list_prepend(sc->stacking, w);
277 screen_stacking_remove(d_screen_t *sc, struct d_window *w)
279 list_remove(sc->stacking, w);
283 screen_stacking_move_above(d_screen_t *sc, struct d_window *w,
284 struct d_window *above)
286 d_list_it_t *wit = list_find(sc->stacking, w);
287 d_list_it_t *ait = list_find(sc->stacking, above);
288 list_move_before(sc->stacking, wit, ait);
292 screen_set_next_repaint(d_screen_t *sc)
294 gettimeofday(&sc->next_repaint, NULL);
295 /* add time for the refresh rate (60 hz) */
296 time_add(&sc->next_repaint, 1000000/60);
297 sc->need_repaint = FALSE;
301 screen_setup_default_functions(d_screen_t *sc)
303 sc->screen_paint = screen_set_next_repaint;
304 sc->window_show = window_show;
305 sc->window_hide = window_hide;
306 sc->window_become_zombie = window_become_zombie;
307 sc->window_configure = window_configure;
311 screen_add_plugin_data(d_screen_t *sc, const char *key, void *data)
313 char *skey = g_strdup(key);
314 g_hash_table_insert(sc->plugin_data, skey, data);
318 screen_find_plugin_data(d_screen_t *sc, const char *key)
320 return g_hash_table_lookup(sc->plugin_data, key);
324 screen_remove_plugin_data(d_screen_t *sc, const char *key)
326 g_hash_table_remove(sc->plugin_data, key);
329 void screen_refresh(d_screen_t *sc)
331 sc->need_repaint = TRUE;