[gtk/ebassi/scroll-position] Remove position from GdkScrollEvent

[Emmanuele Bassi <ebassi src gnome org>]

commit 79105962a7e61c2338951cd2efb64f2d532d8e9b
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Jun 1 10:49:33 2020 +0100

    Remove position from GdkScrollEvent
    
    Scroll events do not have a position, so they shouldn't implement the
    GdkEventClass.get_position() virtual function; nor they should have an x
    and y fields that never get updated.

 gdk/gdkevents.c        | 28 +++-------------------------
 gdk/gdkeventsprivate.h |  2 --
 2 files changed, 3 insertions(+), 27 deletions(-)
---
diff --git a/gdk/gdkevents.c b/gdk/gdkevents.c
index 5d1d055028..e1a58006cb 100644
--- a/gdk/gdkevents.c
+++ b/gdk/gdkevents.c
@@ -2130,7 +2130,7 @@ gdk_focus_event_new (GdkSurface *surface,
 
 /**
  * gdk_focus_event_get_in:
- * @event: (type GdkScrollEvent): a focus change event
+ * @event: (type GdkFocusEvent): a focus change event
  *
  * Extracts whether this event is about focus entering or
  * leaving the surface.
@@ -2152,15 +2152,6 @@ gdk_focus_event_get_in (GdkEvent *event)
 
 /* {{{ GdkScrollEvent */
 
-static void
-gdk_scroll_event_init (GdkEvent *event)
-{
-  GdkScrollEvent *self = (GdkScrollEvent *) event;
-
-  self->x = NAN;
-  self->y = NAN;
-}
-
 static void
 gdk_scroll_event_finalize (GdkEvent *event)
 {
@@ -2179,19 +2170,6 @@ gdk_scroll_event_get_state (GdkEvent *event)
   return self->state;
 }
 
-static gboolean
-gdk_scroll_event_get_position (GdkEvent *event,
-                               double   *x,
-                               double   *y)
-{
-  GdkScrollEvent *self = (GdkScrollEvent *) event;
-
-  *x = self->x;
-  *y = self->y;
-
-  return TRUE;
-}
-
 static GdkDeviceTool *
 gdk_scroll_event_get_tool (GdkEvent *event)
 {
@@ -2202,10 +2180,10 @@ gdk_scroll_event_get_tool (GdkEvent *event)
 
 static const GdkEventTypeInfo gdk_scroll_event_info = {
   sizeof (GdkScrollEvent),
-  gdk_scroll_event_init,
+  NULL,
   gdk_scroll_event_finalize,
   gdk_scroll_event_get_state,
-  gdk_scroll_event_get_position,
+  NULL,
   NULL,
   gdk_scroll_event_get_tool,
   NULL,
diff --git a/gdk/gdkeventsprivate.h b/gdk/gdkeventsprivate.h
index eca81486d2..0fd0b3e908 100644
--- a/gdk/gdkeventsprivate.h
+++ b/gdk/gdkeventsprivate.h
@@ -225,8 +225,6 @@ struct _GdkScrollEvent
 {
   GdkEvent parent_instance;
 
-  double x;
-  double y;
   GdkModifierType state;
   GdkScrollDirection direction;
   double delta_x;