dcompmgr.c

   1 #include "screen.h"
   2 #include "window.h"
   3 #include "gettext.h"
   4
   5 #include <glib.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <xcb/xcb.h>
  10
  11 static gint
  12 all_screens(xcb_connection_t *conn, d_screen_t **list)
  13 {
  14     static const xcb_setup_t *setup;
  15     xcb_screen_iterator_t it;
  16     int count, i;
  17     d_screen_t sc;
  18
  19     setup = xcb_get_setup(conn);
  20
  21     count = i = 0;
  22     for (it = xcb_setup_roots_iterator(setup); it.rem; xcb_screen_next(&it)) {
  23         sc.super = *it.data;
  24         sc.conn = conn;
  25         sc.num = i++;
  26         if (screen_register(&sc)) {
  27             ++count;
  28             *list = g_renew(d_screen_t, *list, count);
  29             (*list)[count-1] = sc;
  30             printf(_("managing screen %d\n"), sc.num);
  31         }
  32     }
  33     return count;
  34 }
  35
  36 d_screen_t*
  37 screen_from_root(d_screen_t *list, int n, xcb_window_t root)
  38 {
  39     int i;
  40     for (i = 0; i < n; ++i)
  41         if (list->super.root == root) return &list[i];
  42     g_assert_not_reached();
  43     return NULL;
  44 }
  45
  46 int
  47 main(int argc, char **argv)
  48 {
  49     xcb_connection_t    *conn;
  50     d_screen_t          *screens = NULL;
  51     int                  nscreens;
  52     xcb_generic_event_t *ev;
  53
  54     conn = xcb_connect(NULL, NULL);
  55     if (!conn) {
  56         printf(_("Unable to connect to display\n"));
  57         return 1;
  58     }
  59
  60     nscreens = all_screens(conn, &screens);
  61     if (nscreens < 1) {
  62         printf(_("found no screens to run on\n"));
  63         xcb_disconnect(conn);
  64         return 0;
  65     }
  66
  67     while ((ev = xcb_wait_for_event(conn))) {
  68         printf("event %d\n", ev->response_type);
  69
  70         if (!ev->response_type) {
  71             error(conn, (xcb_generic_error_t*)ev);
  72             free(ev);
  73             continue;
  74         }
  75
  76         switch (ev->response_type) {
  77         case XCB_CREATE_NOTIFY:
  78         {
  79             xcb_create_notify_event_t *cev;
  80             d_screen_t *sc;
  81
  82             cev = (xcb_create_notify_event_t*)ev;
  83             sc = screen_from_root(screens, nscreens, cev->parent);
  84             if (!sc) break;
  85             screen_add_window(sc, cev->window);
  86             break;
  87         }
  88         case XCB_DESTROY_NOTIFY:
  89         {
  90             xcb_destroy_notify_event_t *dev;
  91             d_screen_t *sc;
  92             d_window_t *w;
  93
  94             dev = (xcb_destroy_notify_event_t*)ev;
  95             sc = screen_from_root(screens, nscreens, dev->event);
  96             if (!sc) break;
  97             w = screen_find_window(sc, dev->window);
  98             w->hide(w);
  99             screen_remove_window(sc, w);
 100             break;
 101         }
 102         case XCB_REPARENT_NOTIFY:
 103         {
 104             xcb_reparent_notify_event_t *rev;
 105             d_screen_t *sc;
 106             d_window_t *w;
 107
 108             rev = (xcb_reparent_notify_event_t*)ev;
 109             sc = screen_from_root(screens, nscreens, rev->event);
 110             if (!sc) break;
 111             w = screen_find_window(sc, rev->window);
 112             if (rev->parent == sc->super.root)
 113                 screen_add_window(sc, rev->window);
 114             else {
 115                 w->hide(w);
 116                 screen_remove_window(sc, w);
 117             }
 118             break;
 119         }
 120         default:
 121             break;
 122         }
 123         free(ev);
 124     }
 125
 126     xcb_disconnect(conn);
 127     return 0;
 128 }