Implement transient for

diff --git a/sys-xcb.c b/sys-xcb.c
index 9a0111cc9bfff4003b1bd1a09cc719f18466f403..7942776381f4e71532778be39c1ddf06f44cbf58 100644 (file)
--- a/sys-xcb.c
+++ b/sys-xcb.c
@@ -50,6 +50,7 @@ struct win_sys {
        xcb_event_mask_t events; // currently watch events
        strut_t          strut;  // toolbar struts
        state_t          state;  // window state if not mapped
+       xcb_window_t     parent; // transient for window
        int mapped;              // window is managed by wm
        int managed;             // window is managed by wm
 };
@@ -536,6 +537,21 @@ static int do_get_strut(xcb_window_t xcb, strut_t *strut)
        return ext.left || ext.right || ext.top || ext.bottom;
 }
 
+static int do_get_transient(xcb_window_t xcb, xcb_window_t *parent)
+{
+       xcb_get_property_cookie_t cookie;
+
+       cookie = xcb_icccm_get_wm_transient_for(conn, xcb);
+       if (!cookie.sequence)
+               return warn("do_get_transient: bad cookie");
+
+       if (!xcb_icccm_get_wm_transient_for_reply(conn, cookie, parent, NULL))
+               return warn("do_get_transient: no sizes");
+
+       printf("do_get_transient: %d -> %d\n", xcb, *parent);
+       return 1;
+}
+
 static xcb_pixmap_t do_alloc_color(uint32_t rgb)
 {
        uint16_t r = (rgb & 0xFF0000) >> 8;
@@ -799,6 +815,9 @@ static void on_create_notify(xcb_create_notify_event_t *event)
 
        if (!event->override_redirect)
                send_manage(win, 1);
+
+       if (do_get_transient(event->window, &win->sys->parent))
+               win->parent = win_get(win->sys->parent);
 }
 
 static void on_destroy_notify(xcb_destroy_notify_event_t *event)
@@ -904,6 +923,11 @@ static void on_property_notify(xcb_property_notify_event_t *event)
                if (do_get_strut(win->sys->xcb, &win->sys->strut))
                        win_add_strut(win);
 
+       /* Check transient for */
+       if (event->atom == XCB_ATOM_WM_TRANSIENT_FOR)
+               if (do_get_transient(event->window, &win->sys->parent))
+                       win->parent = win_get(win->sys->parent);
+
        /* Check window state */
        if (event->atom == wm_nhints)
                if (do_get_icccm_state(event->window, &win->sys->state))