11 #include <xcb/composite.h>
12 #include <xcb/xfixes.h>
14 #define ROOT_MASK (XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | \
15 XCB_EVENT_MASK_STRUCTURE_NOTIFY)
17 #define SELECTION_MASK (XCB_EVENT_MASK_STRUCTURE_NOTIFY | \
18 XCB_EVENT_MASK_PROPERTY_CHANGE)
20 static gboolean screen_init(d_screen_t *sc);
21 static xcb_timestamp_t screen_timestamp(d_screen_t *sc);
22 static void screen_add_existing_windows(d_screen_t *sc);
23 static void screen_set_next_repaint(d_screen_t *sc);
26 xcb_window_hash(xcb_window_t *w) { return *w; }
29 xcb_window_equal(xcb_window_t *w1, xcb_window_t *w2) { return *w1 == *w2; }
33 screen_new(struct d_display *dpy, int num, xcb_screen_t *xcb)
37 sc = malloc(sizeof(d_screen_t));
43 gettimeofday(&sc->next_repaint, NULL);
44 sc->need_repaint = TRUE;
46 sc->winhash = g_hash_table_new((GHashFunc)xcb_window_hash,
47 (GEqualFunc)xcb_window_equal);
48 sc->stacking = list_new();
49 sc->plugin_data = list_new();
55 screen_ref(d_screen_t *sc)
61 screen_unref(d_screen_t *sc)
63 if (sc && --sc->ref == 0) {
64 g_hash_table_unref(sc->winhash);
65 list_unref(sc->stacking);
66 list_unref(sc->plugin_data);
72 screen_register(d_screen_t *sc)
76 xcb_intern_atom_cookie_t ack;
77 xcb_intern_atom_reply_t *arep;
78 xcb_get_selection_owner_cookie_t sck;
79 xcb_get_selection_owner_reply_t *srep;
83 w = xcb_generate_id(sc->dpy->conn);
84 event_mask = SELECTION_MASK;
85 xcb_create_window(sc->dpy->conn, XCB_COPY_FROM_PARENT, w, sc->super.root,
86 0, 0, 1, 1, 0, XCB_WINDOW_CLASS_INPUT_ONLY,
87 sc->super.root_visual, XCB_CW_EVENT_MASK, &event_mask);
89 name = g_strdup_printf("_NET_WM_CM_S%d", sc->num);
90 ack = xcb_intern_atom(sc->dpy->conn, FALSE, strlen(name), name);
91 arep = xcb_intern_atom_reply(sc->dpy->conn, ack, NULL);
94 xcb_grab_server(sc->dpy->conn);
96 sck = xcb_get_selection_owner(sc->dpy->conn, arep->atom);
97 srep = xcb_get_selection_owner_reply(sc->dpy->conn, sck, NULL);
98 taken = !!srep->owner;
101 printf(_("screen %d already has a composite manager, skipping\n"),
106 xcb_timestamp_t time;
109 sc->selatom = arep->atom;
111 time = screen_timestamp(sc);
113 xcb_set_selection_owner(sc->dpy->conn, w, arep->atom, time);
114 sck = xcb_get_selection_owner(sc->dpy->conn, arep->atom);
115 srep = xcb_get_selection_owner_reply(sc->dpy->conn, sck, NULL);
116 taken = srep->owner == w;
117 if (taken && screen_init(sc)) {
118 screen_add_existing_windows(sc);
122 xcb_destroy_window(sc->dpy->conn, w);
127 xcb_ungrab_server(sc->dpy->conn);
128 xcb_flush(sc->dpy->conn);
134 screen_init(d_screen_t *sc)
137 xcb_generic_error_t *err;
138 xcb_void_cookie_t redir_ck;
139 xcb_composite_get_overlay_window_cookie_t overlay_ck;
140 xcb_composite_get_overlay_window_reply_t *overlay_rep;
143 xcb_composite_redirect_subwindows(sc->dpy->conn, sc->super.root,
144 XCB_COMPOSITE_REDIRECT_AUTOMATIC);
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;
173 /* make the overlay window click-through */
175 xcb_xfixes_region_t region;
177 region = xcb_generate_id(sc->dpy->conn);
178 xcb_xfixes_create_region(sc->dpy->conn, region, 0, NULL);
179 xcb_xfixes_set_window_shape_region(sc->dpy->conn,
181 XCB_SHAPE_SK_BOUNDING,
183 xcb_xfixes_set_window_shape_region(sc->dpy->conn,
187 xcb_xfixes_destroy_region(sc->dpy->conn, region);
191 mask = SELECTION_MASK;
192 xcb_change_window_attributes(sc->dpy->conn, sc->selwin,
193 XCB_CW_EVENT_MASK, &mask);
195 xcb_change_window_attributes(sc->dpy->conn, sc->super.root,
196 XCB_CW_EVENT_MASK, &mask);
202 screen_add_window(d_screen_t *sc, xcb_window_t wid)
206 w = window_new(wid, sc);
207 g_hash_table_insert(sc->winhash, &w->id, w);
209 window_create_damage(w);
211 //printf("screen added window 0x%x\n", w->id);
216 screen_add_existing_windows(d_screen_t *sc)
218 xcb_query_tree_cookie_t ck;
219 xcb_query_tree_reply_t *rep;
221 ck = xcb_query_tree(sc->dpy->conn, sc->super.root);
222 rep = xcb_query_tree_reply(sc->dpy->conn, ck, NULL);
224 xcb_window_iterator_t it;
226 it = xcb_query_tree_children_iterator(rep);
227 for (; it.rem; xcb_window_next(&it))
228 screen_add_window(sc, *it.data);
235 screen_remove_window(d_screen_t *sc, struct d_window *w)
237 //printf("screen removed window 0x%x\n", w->id);
239 window_destroy_damage(w);
240 g_hash_table_remove(sc->winhash, &w->id);
241 sc->window_become_zombie(w);
246 screen_find_window(d_screen_t *sc, xcb_window_t id)
248 return g_hash_table_lookup(sc->winhash, &id);
251 static xcb_timestamp_t
252 screen_timestamp(d_screen_t *sc)
254 xcb_void_cookie_t ck;
255 xcb_timestamp_t time;
257 ck = xcb_change_property(sc->dpy->conn, XCB_PROP_MODE_REPLACE, sc->selwin,
258 sc->selatom, sc->selatom, 32, 0, NULL);
259 xcb_flush(sc->dpy->conn);
261 xcb_generic_event_t *ev;
263 ev = xcb_wait_for_event(sc->dpy->conn);
265 printf(_("IO error\n"));
269 /* expect errors.. */
270 if (!ev->response_type) {
271 display_error(sc->dpy, (xcb_generic_error_t*)ev);
276 if (ev->response_type == XCB_PROPERTY_NOTIFY &&
277 ev->full_sequence == ck.sequence)
279 time = ((xcb_property_notify_event_t*)ev)->time;
284 printf("created timestamp %lu\n", (unsigned long) time);
289 screen_stacking_add(d_screen_t *sc, struct d_window *w)
291 list_prepend(sc->stacking, w);
295 screen_stacking_remove(d_screen_t *sc, struct d_window *w)
297 list_remove(sc->stacking, w);
301 screen_stacking_move_above(d_screen_t *sc, struct d_window *w,
302 struct d_window *above)
304 d_list_it_t *wit = list_find(sc->stacking, w);
305 d_list_it_t *ait = list_find(sc->stacking, above);
306 list_move_before(sc->stacking, wit, ait);
310 screen_set_next_repaint(d_screen_t *sc)
312 gettimeofday(&sc->next_repaint, NULL);
313 /* add time for the refresh rate (60 hz) */
314 time_add(&sc->next_repaint, 1000000/60);
315 sc->need_repaint = FALSE;
319 screen_setup_default_functions(d_screen_t *sc)
321 sc->screen_paint = screen_set_next_repaint;
322 sc->window_show = window_show;
323 sc->window_hide = window_hide;
324 sc->window_become_zombie = window_become_zombie;
325 sc->window_move = window_move;
326 sc->window_resize = window_resize;
330 screen_add_plugin_data(d_screen_t *sc, int id, void *data)
332 plugin_data_add(sc->plugin_data, id, data);
336 screen_find_plugin_data(d_screen_t *sc, int id)
338 return plugin_data_find(sc->plugin_data, id);
342 screen_remove_plugin_data(d_screen_t *sc, int id)
344 plugin_data_remove(sc->plugin_data, id);
347 void screen_refresh(d_screen_t *sc)
349 sc->need_repaint = TRUE;
350 //printf("*** need repaint! ***\n");