[gnome-shell/wip/carlosg/osk-emoji-and-keypad: 65/76] st: Honor button mask on touch events

[Carlos Garnacho <carlosg src gnome org>]

commit e17458b89f9f64883d653badb8b0e638449d1002
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Jan 21 20:36:22 2019 +0100

    st: Honor button mask on touch events
    
    Even though it's not a "button", we use button1 to map to actions. Seems
    fair to refuse to press the StButton if it would not react to button1.

 src/st/st-button.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/st/st-button.c b/src/st/st-button.c
index a95ddff2d..5a70f4e83 100644
--- a/src/st/st-button.c
+++ b/src/st/st-button.c
@@ -241,6 +241,8 @@ st_button_touch_event (ClutterActor      *actor,
 
   if (priv->pressed != 0)
     return CLUTTER_EVENT_PROPAGATE;
+  if ((priv->button_mask & mask) == 0)
+    return CLUTTER_EVENT_PROPAGATE;
 
   device = clutter_event_get_device ((ClutterEvent*) event);
   sequence = clutter_event_get_event_sequence ((ClutterEvent*) event);