[gtk/gtk-3-24: 1/2] switch: Fix toggling switch on touch devices

[Matthias Clasen <matthiasc src gnome org>]

commit 2fc60a1e3f271282330cab3871e71a8dabc23336
Author: Mohammed Sadiq <sadiq sadiqpk org>
Date:   Fri Dec 6 19:22:11 2019 +0530

    switch: Fix toggling switch on touch devices
    
    priv->is_switch is used to get hint if the gesture happened
    on the switch. On touch devices, ::enter-notify-event may
    not be emitted, and so priv->is_switch may not be set.
    
    Let it be set when ::pressed gesture is emitted so that
    the switch is toggled when the gesture occurs regardless
    of whether a pointing device is present or not.

 gtk/gtkswitch.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gtk/gtkswitch.c b/gtk/gtkswitch.c
index 829bbb38e4..002968e14e 100644
--- a/gtk/gtkswitch.c
+++ b/gtk/gtkswitch.c
@@ -208,6 +208,7 @@ gtk_switch_multipress_gesture_pressed (GtkGestureMultiPress *gesture,
 
   gtk_widget_get_allocation (GTK_WIDGET (sw), &allocation);
   gtk_gesture_set_state (GTK_GESTURE (gesture), GTK_EVENT_SEQUENCE_CLAIMED);
+  priv->in_switch = TRUE;
 
   /* If the press didn't happen in the draggable handle,
    * cancel the pan gesture right away
@@ -232,6 +233,8 @@ gtk_switch_multipress_gesture_released (GtkGestureMultiPress *gesture,
   if (priv->in_switch &&
       gtk_gesture_handles_sequence (GTK_GESTURE (gesture), sequence))
     gtk_switch_begin_toggle_animation (sw);
+
+  priv->in_switch = FALSE;
 }
 
 static void