void QXcbScreen::updateGeometry(xcb_timestamp_t timestamp)
{
if (connection()->hasXRandr()) {
xcb_randr_get_crtc_info_reply_t *crtc = xcb_randr_get_crtc_info_reply(xcb_connection(),
xcb_randr_get_crtc_info_unchecked(xcb_connection(), m_crtc, timestamp), NULL);
if (crtc) {
m_geometry = QRect(crtc->x, crtc->y, crtc->width, crtc->height);
m_availableGeometry = m_geometry;
free(crtc);
}
}
xcb_get_property_reply_t * workArea =
xcb_get_property_reply(xcb_connection(),
xcb_get_property_unchecked(xcb_connection(), false, screen()->root,
atom(QXcbAtom::_NET_WORKAREA),
XCB_ATOM_CARDINAL, 0, 1024), NULL);
if (workArea && workArea->type == XCB_ATOM_CARDINAL && workArea->format == 32 && workArea->value_len >= 4) {
// If workArea->value_len > 4, the remaining ones seem to be for virtual desktops.
// But QScreen doesn't know about that concept. In reality there could be a
// "docked" panel (with _NET_WM_STRUT_PARTIAL atom set) on just one desktop.
// But for now just assume the first 4 values give us the geometry of the
// "work area", AKA "available geometry"
uint32_t *geom = (uint32_t*)xcb_get_property_value(workArea);
QRect virtualAvailableGeometry(geom[0], geom[1], geom[2], geom[3]);
// Take the intersection of the desktop's available geometry with this screen's geometry
// to get the part of the available geometry which belongs to this screen.
m_availableGeometry = m_geometry & virtualAvailableGeometry;
}
free(workArea);
}
bool randr(void)
{
if (!xcb_get_extension_data(cfg.conn, &xcb_randr_id)->present) {
warn("randr is not present\n");
return false;
}
const xcb_randr_get_screen_resources_cookie_t cookie = xcb_randr_get_screen_resources_unchecked(cfg.conn, cfg.screen->root);
xcb_randr_get_screen_resources_reply_t *reply = xcb_randr_get_screen_resources_reply(cfg.conn, cookie, (void *)0);
if (!reply)
return false;
const xcb_randr_crtc_t *info = xcb_randr_get_screen_resources_crtcs(reply);
PRINTF("randr num crtcs: %u\n", reply->num_crtcs);
xcb_randr_get_crtc_info_cookie_t cookies[reply->num_crtcs];
for (uint16_t crtc = 0; crtc < reply->num_crtcs; crtc++)
cookies[crtc] = xcb_randr_get_crtc_info_unchecked(cfg.conn, info[crtc], XCB_CURRENT_TIME);
for (uint16_t crtc = 0; crtc < reply->num_crtcs; crtc++) {
xcb_randr_get_crtc_info_reply_t *reply = xcb_randr_get_crtc_info_reply(cfg.conn, cookies[crtc], (void *)0);
if (!reply)
continue;
PRINTF("adding crtc: %u\n", crtc);
monitor_add(reply->x, reply->y, reply->width, reply->height);
free(reply);
}
free(reply);
return true;
}
