[gtk/wip/carlosg/tablet-fixes: 21/22] gdk/wayland: Unset GDK_BUTTON1_MASK on proximity_in

[Carlos Garnacho <carlosg src gnome org>]

commit 9539cc4a93819d2915a3e097940f38d00b5bc202
Author: Carlos Garnacho <carlosg gnome org>
Date:   Thu Dec 2 16:53:47 2021 +0100

    gdk/wayland: Unset GDK_BUTTON1_MASK on proximity_in
    
    In some circumstances (e.g. activating with a stylus something that
    closes a window), we can receive zwp_tablet_tool.proximity_out without
    receiving a zwp_tablet_tool.up beforehand.
    
    In those cases, we are not expecting neither .up nor .button, so
    reset the stylus device button modifiers on proximity_out.
    
    Fixes: https://gitlab.gnome.org/GNOME/gtk/-/issues/4103

 gdk/wayland/gdkdevice-wayland.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/gdk/wayland/gdkdevice-wayland.c b/gdk/wayland/gdkdevice-wayland.c
index d0bc73eb97..8a45e911e9 100644
--- a/gdk/wayland/gdkdevice-wayland.c
+++ b/gdk/wayland/gdkdevice-wayland.c
@@ -3606,6 +3606,10 @@ tablet_tool_handle_proximity_out (void                      *data,
   g_object_unref (tablet->pointer_info.focus);
   tablet->pointer_info.focus = NULL;
 
+  tablet->pointer_info.button_modifiers &=
+    ~(GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK |
+      GDK_BUTTON4_MASK | GDK_BUTTON5_MASK);
+
   gdk_device_update_tool (tablet->stylus_device, NULL);
   g_clear_object (&tablet->pointer_info.cursor);
 }