/**
* @brief Create the EWMH connection, request all of the atoms and set some
* sensible defaults for them.
*/
void setup_ewmh(void)
{
xcb_ewmh_coordinates_t viewport[] = { {0, 0} };
xcb_ewmh_geometry_t workarea[] = { {0, conf.bar_bottom ? 0 : wss[cw].bar_height,
screen_width, screen_height - wss[cw].bar_height} };
ewmh = calloc(1, sizeof(xcb_ewmh_connection_t));
if (!ewmh) {
log_err("Unable to create ewmh connection\n");
exit(EXIT_FAILURE);
}
if (xcb_ewmh_init_atoms_replies(ewmh, xcb_ewmh_init_atoms(dpy, ewmh), NULL) == 0)
log_err("Couldn't initialise ewmh atoms");
xcb_atom_t ewmh_net_atoms[] = { ewmh->_NET_SUPPORTED,
ewmh->_NET_SUPPORTING_WM_CHECK,
ewmh->_NET_DESKTOP_VIEWPORT,
ewmh->_NET_WM_NAME,
ewmh->_NET_WM_STATE,
ewmh->_NET_CLOSE_WINDOW,
ewmh->_NET_WM_STATE_FULLSCREEN,
ewmh->_NET_CURRENT_DESKTOP,
ewmh->_NET_NUMBER_OF_DESKTOPS,
ewmh->_NET_DESKTOP_GEOMETRY,
ewmh->_NET_WORKAREA,
ewmh->_NET_ACTIVE_WINDOW };
xcb_ewmh_set_supported(ewmh, 0, LENGTH(ewmh_net_atoms), ewmh_net_atoms);
xcb_ewmh_set_supporting_wm_check(ewmh, 0, screen->root);
xcb_ewmh_set_desktop_viewport(ewmh, 0, LENGTH(viewport), viewport);
xcb_ewmh_set_wm_name(ewmh, 0, strlen("howm"), "howm");
xcb_ewmh_set_current_desktop(ewmh, 0, cw);
xcb_ewmh_set_number_of_desktops(ewmh, 0, WORKSPACES);
xcb_ewmh_set_workarea(ewmh, 0, LENGTH(workarea), workarea);
xcb_ewmh_set_desktop_geometry(ewmh, 0, screen_width, screen_height);
}
void ewmh_update_desktop_viewport(void)
{
uint32_t desktops_count = 0;
for (monitor_t *m = mon_head; m != NULL; m = m->next) {
for (desktop_t *d = m->desk_head; d != NULL; d = d->next) {
desktops_count++;
}
}
if (desktops_count == 0) {
xcb_ewmh_set_desktop_viewport(ewmh, default_screen, 0, NULL);
return;
}
xcb_ewmh_coordinates_t coords[desktops_count];
uint16_t desktop = 0;
for (monitor_t *m = mon_head; m != NULL; m = m->next) {
for (desktop_t *d = m->desk_head; d != NULL; d = d->next) {
coords[desktop++] = (xcb_ewmh_coordinates_t){m->rectangle.x, m->rectangle.y};
}
}
xcb_ewmh_set_desktop_viewport(ewmh, default_screen, desktop, coords);
}
