From a38749e7e451558d35e507fd4317e04cef8bdf2b Mon Sep 17 00:00:00 2001
From: Mats <d912e3@gmail.com>
Date: Wed, 20 Feb 2013 16:56:03 +0100
Subject: [PATCH] Bugfix: Handle nested transient popups properly

During smart popup fullscreen handling, display all transient popups
that belong to the respective fullscreen application. A popup window
belongs to another window if the latter is reachable via the path
induced by the WM_TRANSIENT_FOR hints.

fixes #881
---
 src/manage.c | 18 ++++++++++++++----
 src/render.c | 20 +++++++++++++++-----
 2 files changed, 29 insertions(+), 9 deletions(-)

diff --git a/src/manage.c b/src/manage.c
index a2319912..ae3cef0f 100644
--- a/src/manage.c
+++ b/src/manage.c
@@ -385,10 +385,20 @@ void manage_window(xcb_window_t window, xcb_get_window_attributes_cookie_t cooki
             con_toggle_fullscreen(fs, CF_OUTPUT);
         } else if (config.popup_during_fullscreen == PDF_SMART &&
                    fs != NULL &&
-                   fs->window != NULL &&
-                   fs->window->id == cwindow->transient_for) {
-            LOG("This floating window belongs to the fullscreen window (popup_during_fullscreen == smart)\n");
-            con_focus(nc);
+                   fs->window != NULL) {
+            i3Window *transient_win = cwindow;
+            while (transient_win != NULL &&
+                   transient_win->transient_for != XCB_NONE) {
+                if (transient_win->transient_for == fs->window->id) {
+                    LOG("This floating window belongs to the fullscreen window (popup_during_fullscreen == smart)\n");
+                    con_focus(nc);
+                    break;
+                }
+                Con *next_transient = con_by_window_id(transient_win->transient_for);
+                if (next_transient == NULL)
+                    break;
+                transient_win = next_transient->window;
+            }
         }
     }
 
diff --git a/src/render.c b/src/render.c
index 5027cd21..16bfc55b 100644
--- a/src/render.c
+++ b/src/render.c
@@ -271,18 +271,28 @@ void render_con(Con *con, bool render_fullscreen) {
                 /* Don’t render floating windows when there is a fullscreen window
                  * on that workspace. Necessary to make floating fullscreen work
                  * correctly (ticket #564). */
-                if (fullscreen != NULL) {
+                if (fullscreen != NULL && fullscreen->window != NULL) {
                     Con *floating_child = con_descend_focused(child);
+                    Con *transient_con = floating_child;
+                    bool is_transient_for = false;
                     /* Exception to the above rule: smart
                      * popup_during_fullscreen handling (popups belonging to
                      * the fullscreen app will be rendered). */
-                    if (floating_child->window == NULL ||
-                        fullscreen->window == NULL ||
-                        floating_child->window->transient_for != fullscreen->window->id)
+                    while (transient_con != NULL &&
+                           transient_con->window != NULL &&
+                           transient_con->window->transient_for != XCB_NONE) {
+                        if (transient_con->window->transient_for == fullscreen->window->id) {
+                            is_transient_for = true;
+                            break;
+                        }
+                        transient_con = con_by_window_id(transient_con->window->transient_for);
+                    }
+
+                    if (!is_transient_for)
                         continue;
                     else {
                         DLOG("Rendering floating child even though in fullscreen mode: "
-                             "floating->transient_for (0x%08x) == fullscreen->id (0x%08x)\n",
+                             "floating->transient_for (0x%08x) --> fullscreen->id (0x%08x)\n",
                              floating_child->window->transient_for, fullscreen->window->id);
                     }
                 }
-- 
2.39.5