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From 8cedbfd448edf410a45c57addcee0e7304f11b86 Mon Sep 17 00:00:00 2001
From: Roman Gilg <subdiff@gmail.com>
Date: Fri, 3 Jan 2020 17:27:28 +0100
Subject: [PATCH xserver 16/24] xwayland: Recurse on finding the none-wm owner
An X11 window manager might add a chain of parent windows when reparenting to a
decoration window.
That is for example the case for KWin, which reparents client windows to one
decoration and another wrapper parent window.
Account for that by a recursion into the tree. For now assume as before that
all X11 window managers reparent with one child only for these parent windows.
Changes by Hans de Goede:
- Move the xwl_window_is_toplevel() from a later patch in this series here
as it really belongs together with these changes
- Drop no longer necessary xwl_window argument from window_get_none_wm_owner
parameters
Signed-off-by: Roman Gilg <subdiff@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Olivier Fourdan <ofourdan@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
(cherry picked from commit a69f7fbb54efc8ffad320c8afd23cb41fc9edc27)
---
hw/xwayland/xwayland.c | 17 ++++++++---------
1 file changed, 8 insertions(+), 9 deletions(-)
diff --git a/hw/xwayland/xwayland.c b/hw/xwayland/xwayland.c
index 320589dde..f42b80b90 100644
--- a/hw/xwayland/xwayland.c
+++ b/hw/xwayland/xwayland.c
@@ -580,19 +580,18 @@ window_is_wm_window(WindowPtr window)
}
static ClientPtr
-xwl_window_get_owner(struct xwl_window *xwl_window)
+window_get_none_wm_owner(WindowPtr window)
{
- WindowPtr window = xwl_window->window;
ClientPtr client = wClient(window);
/* If the toplevel window is owned by the window-manager, then the
- * actual client toplevel window has been reparented to a window-manager
- * decoration window. In that case return the client of the
- * first *and only* child of the toplevel (decoration) window.
+ * actual client toplevel window has been reparented to some window-manager
+ * decoration/wrapper windows. In that case recurse by checking the client
+ * of the first *and only* child of the decoration/wrapper window.
*/
if (window_is_wm_window(window)) {
if (window->firstChild && window->firstChild == window->lastChild)
- return wClient(window->firstChild);
+ return window_get_none_wm_owner(window->firstChild);
else
return NULL; /* Should never happen, skip resolution emulation */
}
@@ -613,7 +612,7 @@ xwl_window_should_enable_viewport(struct xwl_window *xwl_window,
if (!xwl_screen_has_resolution_change_emulation(xwl_screen))
return FALSE;
- owner = xwl_window_get_owner(xwl_window);
+ owner = window_get_none_wm_owner(xwl_window->window);
if (!owner)
return FALSE;
@@ -692,8 +691,8 @@ xwl_window_is_toplevel(WindowPtr window)
if (window_get_damage(window))
return TRUE;
- /* Normal toplevel client windows, reparented to decoration window */
- return (window->parent && window_get_damage(window->parent));
+ /* Normal toplevel client windows, reparented to a window-manager window */
+ return window->parent && window_is_wm_window(window->parent);
}
static void
--
2.25.2
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