[gtk/fix-cursor-hiding: 5/7] Add private api for synthetic events

[Matthias Clasen <matthiasc src gnome org>]

commit e1fde3e2cd98f96e69f4c288d721078151d5797b
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Mar 25 15:24:18 2021 -0400

    Add private api for synthetic events
    
    Add a function to create motion events and mark them
    as synthetic.

 gdk/gdkevents.c        | 25 +++++++++++++++++++++++++
 gdk/gdkeventsprivate.h | 16 +++++++++++++++-
 2 files changed, 40 insertions(+), 1 deletion(-)
---
diff --git a/gdk/gdkevents.c b/gdk/gdkevents.c
index f7abfe75b5..8bace3909c 100644
--- a/gdk/gdkevents.c
+++ b/gdk/gdkevents.c
@@ -2894,6 +2894,31 @@ gdk_motion_event_new (GdkSurface      *surface,
   return (GdkEvent *) self;
 }
 
+GdkEvent *
+gdk_synthetic_motion_event_new (GdkSurface      *surface,
+                                GdkDevice       *device,
+                                GdkDeviceTool   *tool,
+                                guint32          time,
+                                GdkModifierType  state,
+                                double           x,
+                                double           y,
+                                double          *axes)
+{
+  GdkEvent *event;
+
+  event = gdk_motion_event_new (surface, device, tool, time, state, x, y, axes);
+
+  event->flags |= GDK_EVENT_SYNTHETIC;
+
+  return event;
+}
+
+gboolean
+gdk_motion_event_is_synthetic (GdkEvent *event)
+{
+  return (event->flags & GDK_EVENT_SYNTHETIC) != 0;
+}
+
 /**
  * gdk_event_get_history:
  * @event: a motion or scroll event
diff --git a/gdk/gdkeventsprivate.h b/gdk/gdkeventsprivate.h
index aca69d551f..0002caf0e9 100644
--- a/gdk/gdkeventsprivate.h
+++ b/gdk/gdkeventsprivate.h
@@ -446,6 +446,15 @@ GdkEvent * gdk_motion_event_new         (GdkSurface      *surface,
                                          double           y,
                                          double          *axes);
 
+GdkEvent * gdk_synthetic_motion_event_new (GdkSurface      *surface,
+                                           GdkDevice       *device,
+                                           GdkDeviceTool   *tool,
+                                           guint32          time,
+                                           GdkModifierType  state,
+                                           double           x,
+                                           double           y,
+                                           double          *axes);
+
 GdkEvent * gdk_crossing_event_new       (GdkEventType     type,
                                          GdkSurface      *surface,
                                          GdkDevice       *device,
@@ -576,6 +585,8 @@ GdkEvent * gdk_grab_broken_event_new    (GdkSurface      *surface,
 GdkTranslatedKey *      gdk_key_event_get_translated_key        (GdkEvent *event,
                                                                  gboolean  no_lock);
 
+gboolean gdk_motion_event_is_synthetic (GdkEvent *event);
+
 typedef enum
 {
   /* Following flag is set for events on the event queue during
@@ -587,7 +598,10 @@ typedef enum
    * mark all events in the queue with this flag, and deliver
    * only those events until we finish the frame.
    */
-  GDK_EVENT_FLUSHED = 1 << 2
+  GDK_EVENT_FLUSHED = 1 << 1,
+
+  /* Used for synthetic motion events. */
+  GDK_EVENT_SYNTHETIC = 1 << 2,
 } GdkEventFlags;
 
 GdkEvent* _gdk_event_unqueue (GdkDisplay *display);