13 #include <xcb/composite.h>
14 #include <xcb/xfixes.h>
16 #define ROOT_MASK (XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY | \
17 XCB_EVENT_MASK_STRUCTURE_NOTIFY | \
18 XCB_EVENT_MASK_PROPERTY_CHANGE)
20 #define SELECTION_MASK (XCB_EVENT_MASK_STRUCTURE_NOTIFY | \
21 XCB_EVENT_MASK_PROPERTY_CHANGE)
23 static gboolean screen_init(d_screen_t *sc);
24 static xcb_timestamp_t screen_timestamp(d_screen_t *sc);
25 static void screen_add_existing_windows(d_screen_t *sc);
28 xcb_window_hash(xcb_window_t *w) { return *w; }
31 xcb_window_equal(xcb_window_t *w1, xcb_window_t *w2) { return *w1 == *w2; }
35 screen_new(struct d_display *dpy, int num, xcb_screen_t *xcb)
39 sc = malloc(sizeof(d_screen_t));
45 sc->need_repaint = TRUE;
47 sc->winhash = g_hash_table_new((GHashFunc)xcb_window_hash,
48 (GEqualFunc)xcb_window_equal);
49 sc->stacking = list_new();
50 sc->plugin_data = list_new();
56 screen_ref(d_screen_t *sc)
62 screen_unref(d_screen_t *sc)
64 if (sc && --sc->ref == 0) {
65 d_list_it_t *it, *next;
67 /* clean up pending requests */
68 screen_get_root_pixmap(sc);
70 g_hash_table_unref(sc->winhash);
71 for (it = list_top(sc->stacking); it; it = next) {
73 window_unref(it->data);
75 list_unref(sc->stacking);
76 list_unref(sc->plugin_data);
82 screen_register(d_screen_t *sc)
86 xcb_intern_atom_cookie_t ack;
87 xcb_intern_atom_reply_t *arep;
88 xcb_get_selection_owner_cookie_t sck;
89 xcb_get_selection_owner_reply_t *srep;
93 w = xcb_generate_id(sc->dpy->conn);
94 event_mask = SELECTION_MASK;
95 xcb_create_window(sc->dpy->conn, XCB_COPY_FROM_PARENT, w, sc->super.root,
96 0, 0, 1, 1, 0, XCB_WINDOW_CLASS_INPUT_ONLY,
97 sc->super.root_visual, XCB_CW_EVENT_MASK, &event_mask);
99 name = g_strdup_printf("_NET_WM_CM_S%d", sc->num);
100 ack = xcb_intern_atom(sc->dpy->conn, FALSE, strlen(name), name);
101 arep = xcb_intern_atom_reply(sc->dpy->conn, ack, NULL);
104 xcb_grab_server(sc->dpy->conn);
106 sck = xcb_get_selection_owner(sc->dpy->conn, arep->atom);
107 srep = xcb_get_selection_owner_reply(sc->dpy->conn, sck, NULL);
108 taken = !!srep->owner;
111 printf(_("screen %d already has a composite manager, skipping\n"),
116 xcb_timestamp_t time;
119 sc->selatom = arep->atom;
121 time = screen_timestamp(sc);
123 xcb_set_selection_owner(sc->dpy->conn, w, arep->atom, time);
124 sck = xcb_get_selection_owner(sc->dpy->conn, arep->atom);
125 srep = xcb_get_selection_owner_reply(sc->dpy->conn, sck, NULL);
126 taken = srep->owner == w;
128 if (taken && screen_init(sc)) {
129 screen_add_existing_windows(sc);
133 xcb_destroy_window(sc->dpy->conn, w);
139 xcb_ungrab_server(sc->dpy->conn);
140 xcb_flush(sc->dpy->conn);
146 screen_init(d_screen_t *sc)
149 xcb_generic_error_t *err;
150 xcb_void_cookie_t redir_ck;
151 xcb_composite_get_overlay_window_cookie_t overlay_ck;
152 xcb_composite_get_overlay_window_reply_t *overlay_rep;
155 xcb_composite_redirect_subwindows(sc->dpy->conn, sc->super.root,
156 XCB_COMPOSITE_REDIRECT_AUTOMATIC);
160 xcb_composite_redirect_subwindows(sc->dpy->conn, sc->super.root,
161 XCB_COMPOSITE_REDIRECT_MANUAL);
163 overlay_ck = xcb_composite_get_overlay_window(sc->dpy->conn,
166 /* check that the redirect worked */
167 err = xcb_request_check(sc->dpy->conn, redir_ck);
169 printf(_("unable to redirect rendering, another composite manager must be running"));
174 /* get the overlay window reply */
175 overlay_rep = xcb_composite_get_overlay_window_reply(sc->dpy->conn,
179 printf(_("unable to get the composite overlay window\n"));
182 sc->overlay = overlay_rep->overlay_win;
185 /* make the overlay window click-through */
187 xcb_xfixes_region_t region;
189 region = xcb_generate_id(sc->dpy->conn);
190 xcb_xfixes_create_region(sc->dpy->conn, region, 0, NULL);
191 xcb_xfixes_set_window_shape_region(sc->dpy->conn,
193 XCB_SHAPE_SK_BOUNDING,
195 xcb_xfixes_set_window_shape_region(sc->dpy->conn,
199 xcb_xfixes_destroy_region(sc->dpy->conn, region);
203 mask = SELECTION_MASK;
204 xcb_change_window_attributes(sc->dpy->conn, sc->selwin,
205 XCB_CW_EVENT_MASK, &mask);
207 xcb_change_window_attributes(sc->dpy->conn, sc->super.root,
208 XCB_CW_EVENT_MASK, &mask);
210 screen_update_root_pixmap(sc);
216 screen_update_root_pixmap(d_screen_t *sc)
218 if (sc->root_pixmap_waiting) {
219 xcb_get_property_reply_t *rep;
220 rep = xcb_get_property_reply(sc->dpy->conn, sc->root_pixmap_ck[0],
223 rep = xcb_get_property_reply(sc->dpy->conn, sc->root_pixmap_ck[1],
226 rep = xcb_get_property_reply(sc->dpy->conn, sc->root_pixmap_ck[2],
230 sc->root_pixmap_ck[0] =
231 xcb_get_property_unchecked(sc->dpy->conn, FALSE,
232 sc->super.root, sc->dpy->a.xrootpmap_id,
233 sc->dpy->a.pixmap, 0, 1);
234 sc->root_pixmap_ck[1] =
235 xcb_get_property_unchecked(sc->dpy->conn, FALSE,
236 sc->super.root, sc->dpy->a.esetroot_pmap_id,
237 sc->dpy->a.pixmap, 0, 1);
238 sc->root_pixmap_ck[2] =
239 xcb_get_property_unchecked(sc->dpy->conn, FALSE,
240 sc->super.root, sc->dpy->a.xsetroot_id,
241 sc->dpy->a.pixmap, 0, 1);
242 sc->root_pixmap_waiting = TRUE;
246 screen_add_window(d_screen_t *sc, xcb_window_t wid)
250 w = window_new(wid, sc);
251 g_hash_table_insert(sc->winhash, &w->id, w);
253 window_create_damage(w);
255 //printf("screen added window 0x%x\n", w->id);
260 screen_add_existing_windows(d_screen_t *sc)
262 xcb_query_tree_cookie_t ck;
263 xcb_query_tree_reply_t *rep;
265 ck = xcb_query_tree(sc->dpy->conn, sc->super.root);
266 rep = xcb_query_tree_reply(sc->dpy->conn, ck, NULL);
268 xcb_window_iterator_t it;
270 it = xcb_query_tree_children_iterator(rep);
271 for (; it.rem; xcb_window_next(&it))
272 screen_add_window(sc, *it.data);
279 screen_remove_window(d_screen_t *sc, struct d_window *w)
281 //printf("screen removed window 0x%x\n", w->id);
283 window_destroy_damage(w);
284 g_hash_table_remove(sc->winhash, &w->id);
289 screen_find_window(d_screen_t *sc, xcb_window_t id)
291 return g_hash_table_lookup(sc->winhash, &id);
294 static xcb_timestamp_t
295 screen_timestamp(d_screen_t *sc)
297 xcb_void_cookie_t ck;
298 xcb_timestamp_t time;
300 ck = xcb_change_property(sc->dpy->conn, XCB_PROP_MODE_REPLACE, sc->selwin,
301 sc->selatom, sc->selatom, 32, 0, NULL);
302 xcb_flush(sc->dpy->conn);
304 xcb_generic_event_t *ev;
306 ev = xcb_wait_for_event(sc->dpy->conn);
308 printf(_("IO error\n"));
312 /* expect errors.. */
313 if (!ev->response_type) {
314 display_error(sc->dpy, (xcb_generic_error_t*)ev);
319 if (ev->response_type == XCB_PROPERTY_NOTIFY &&
320 ev->full_sequence == ck.sequence)
322 time = ((xcb_property_notify_event_t*)ev)->time;
327 //printf("created timestamp %lu\n", (unsigned long) time);
332 screen_stacking_add(d_screen_t *sc, struct d_window *w)
334 list_prepend(sc->stacking, w);
338 screen_stacking_remove(d_screen_t *sc, struct d_window *w)
340 list_remove(sc->stacking, w);
344 screen_stacking_move_above(d_screen_t *sc, struct d_window *w,
345 struct d_window *above)
347 d_list_it_t *wit = list_find(sc->stacking, w);
348 d_list_it_t *ait = list_find(sc->stacking, above);
349 list_move_before(sc->stacking, wit, ait);
352 void screen_stacking_move_to_top(d_screen_t *sc, struct d_window *w)
354 d_list_it_t *wit = list_find(sc->stacking, w);
355 d_list_it_t *ait = list_top(sc->stacking);
356 list_move_before(sc->stacking, wit, ait);
359 void screen_stacking_move_to_bottom(d_screen_t *sc, struct d_window *w)
361 d_list_it_t *wit = list_find(sc->stacking, w);
362 list_move_before(sc->stacking, wit, NULL);
366 screen_set_need_repaint(d_screen_t *sc)
368 sc->need_repaint = FALSE;
372 screen_setup_default_functions(d_screen_t *sc)
374 sc->screen_paint = screen_set_need_repaint;
375 sc->window_show = window_show;
376 sc->window_hide = window_hide;
377 sc->window_become_zombie = window_become_zombie;
378 sc->window_zombie_dead = window_zombie_dead;
379 sc->window_move = window_move;
380 sc->window_resize = window_resize;
381 sc->window_reshape = window_reshape;
382 sc->window_opacity_change = window_opacity_change;
383 sc->screen_root_pixmap_change = screen_update_root_pixmap;
387 screen_add_plugin_data(d_screen_t *sc, int id, void *data)
389 plugin_data_add(sc->plugin_data, id, data);
393 screen_find_plugin_data(d_screen_t *sc, int id)
395 return plugin_data_find(sc->plugin_data, id);
399 screen_remove_plugin_data(d_screen_t *sc, int id)
401 plugin_data_remove(sc->plugin_data, id);
405 screen_refresh(d_screen_t *sc)
407 sc->need_repaint = TRUE;
408 //printf("*** need repaint! ***\n");
412 screen_get_root_pixmap(d_screen_t *sc)
414 if (sc->root_pixmap_waiting) {
415 xcb_get_property_reply_t *rep;
418 sc->root_pixmap = XCB_NONE;
419 for (i = 2; i >= 0; --i) {
420 rep = xcb_get_property_reply(sc->dpy->conn, sc->root_pixmap_ck[i],
423 if (rep->type == sc->dpy->a.pixmap && rep->length >= 1) {
425 ((xcb_pixmap_t*)xcb_get_property_value(rep))[0];
426 //printf("got root pixmap 0x%x\n", sc->root_pixmap);
432 return sc->root_pixmap;