contrib/create_frame.c

   1 #include <stdlib.h>
   2 #include <stdbool.h>
   3 #include <string.h>
   4 #include <xcb/xcb.h>
   5 #include <xcb/xcb_event.h>
   6 #include <xcb/xcb_icccm.h>
   7
   8 #define FRAME_CLASS_NAME     "BSPWM_FRAME"
   9 #define FRAME_INSTANCE_NAME  "bspwm_frame"
  10
  11 xcb_connection_t *dpy;
  12
  13 bool get_atom(char *name, xcb_atom_t *atom)
  14 {
  15     bool ack = true;
  16     xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(dpy, xcb_intern_atom(dpy, 0, strlen(name), name), NULL);
  17     if (reply != NULL)
  18         *atom = reply->atom;
  19     else
  20         ack = false;
  21     free(reply);
  22     return ack;
  23 }
  24
  25 int main(int argc, char *argv[])
  26 {
  27     dpy = xcb_connect(NULL, NULL);
  28     if (dpy == NULL)
  29         return EXIT_FAILURE;
  30     xcb_atom_t WM_PROTOCOLS, WM_DELETE_WINDOW;
  31     if (!get_atom("WM_PROTOCOLS", &WM_PROTOCOLS)
  32             || !get_atom("WM_DELETE_WINDOW", &WM_DELETE_WINDOW)) {
  33         xcb_disconnect(dpy);
  34         return EXIT_FAILURE;
  35     }
  36     xcb_screen_t *screen = xcb_setup_roots_iterator(xcb_get_setup(dpy)).data;
  37     if (screen == NULL)
  38         return EXIT_FAILURE;
  39     xcb_window_t root = screen->root;
  40     xcb_window_t win = xcb_generate_id(dpy);
  41     xcb_create_window(dpy, XCB_COPY_FROM_PARENT, win, root, 0, 0, 1, 1, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_COPY_FROM_PARENT, 0, NULL);
  42     xcb_icccm_set_wm_class(dpy, win, strlen(FRAME_CLASS_NAME) + strlen(FRAME_INSTANCE_NAME) + 1, FRAME_INSTANCE_NAME "\0" FRAME_CLASS_NAME);
  43     xcb_map_window(dpy, win);
  44     xcb_flush(dpy);
  45     xcb_generic_event_t *evt;
  46     bool running = true;
  47     while (running && (evt = xcb_wait_for_event(dpy)) != NULL) {
  48         uint8_t rt = XCB_EVENT_RESPONSE_TYPE(evt);
  49         if (rt == XCB_CLIENT_MESSAGE)  {
  50             xcb_client_message_event_t *cme = (xcb_client_message_event_t *) evt;
  51             if (cme->type == WM_PROTOCOLS && cme->data.data32[0] == WM_DELETE_WINDOW)
  52                 running = false;
  53         }
  54         free(evt);
  55     }
  56     xcb_destroy_window(dpy, win);
  57     xcb_disconnect(dpy);
  58     return EXIT_SUCCESS;
  59 }