[gtk+/multitouch: 97/129] gdk: Add internal API to set "pointer emulated" flag on events

[Carlos Garnacho <carlosg src gnome org>]

commit 77f071b5ff982db296dc58e8a47cfb4fe0358d3e
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Dec 28 01:37:01 2011 +0100

    gdk: Add internal API to set "pointer emulated" flag on events
    
    This flag will be used for non-pointer events that are emulated
    from eg. touch events, or pointer events being emulated.

 gdk/gdkevents.c    |   26 +++++++++++++++++++++++++-
 gdk/gdkinternals.h |   12 +++++++++++-
 2 files changed, 36 insertions(+), 2 deletions(-)
---
diff --git a/gdk/gdkevents.c b/gdk/gdkevents.c
index 791087c..d11518b 100644
--- a/gdk/gdkevents.c
+++ b/gdk/gdkevents.c
@@ -490,7 +490,31 @@ gdk_event_is_allocated (const GdkEvent *event)
 
   return FALSE;
 }
- 
+
+void
+_gdk_event_set_pointer_emulated (GdkEvent *event,
+                                 gboolean  emulated)
+{
+  if (gdk_event_is_allocated (event))
+    {
+      GdkEventPrivate *private = (GdkEventPrivate *) event;
+
+      if (emulated)
+        private->flags |= GDK_EVENT_POINTER_EMULATED;
+      else
+        private->flags &= ~(GDK_EVENT_POINTER_EMULATED);
+    }
+}
+
+gboolean
+_gdk_event_get_pointer_emulated (GdkEvent *event)
+{
+  if (gdk_event_is_allocated (event))
+    return (((GdkEventPrivate *) event)->flags & GDK_EVENT_POINTER_EMULATED) != 0;
+
+  return FALSE;
+}
+
 /**
  * gdk_event_copy:
  * @event: a #GdkEvent
diff --git a/gdk/gdkinternals.h b/gdk/gdkinternals.h
index 678dff9..150c909 100644
--- a/gdk/gdkinternals.h
+++ b/gdk/gdkinternals.h
@@ -150,7 +150,13 @@ typedef enum
   /* Following flag is set for events on the event queue during
    * translation and cleared afterwards.
    */
-  GDK_EVENT_PENDING = 1 << 0
+  GDK_EVENT_PENDING = 1 << 0,
+
+  /* The following flag is set for:
+   * 1) touch events emulating pointer events
+   * 2) pointer events being emulated by a touch sequence.
+   */
+  GDK_EVENT_POINTER_EMULATED = 1 << 1
 } GdkEventFlags;
 
 struct _GdkEventPrivate
@@ -281,6 +287,10 @@ GdkEvent* _gdk_event_unqueue (GdkDisplay *display);
 void _gdk_event_filter_unref        (GdkWindow      *window,
 				     GdkEventFilter *filter);
 
+void     _gdk_event_set_pointer_emulated (GdkEvent *event,
+                                          gboolean  emulated);
+gboolean _gdk_event_get_pointer_emulated (GdkEvent *event);
+
 void   _gdk_event_emit               (GdkEvent   *event);
 GList* _gdk_event_queue_find_first   (GdkDisplay *display);
 void   _gdk_event_queue_remove_link  (GdkDisplay *display,