[gtk+/overlay-heuristics: 1/8] GdkDevice: Add a last-used timestamp

[Matthias Clasen <matthiasc src gnome org>]

commit e83b9342725a91c8f71b52795c5efe3422d1dc48
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Nov 28 12:26:05 2014 -0500

    GdkDevice: Add a last-used timestamp
    
    This will be used in determining whether to treat the system as
    touch or not.

 gdk/gdkdevice.c        |   27 +++++++++++++++++++++++++++
 gdk/gdkdevice.h        |    3 +++
 gdk/gdkdeviceprivate.h |    4 ++++
 3 files changed, 34 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkdevice.c b/gdk/gdkdevice.c
index ebef53b..51c9172 100644
--- a/gdk/gdkdevice.c
+++ b/gdk/gdkdevice.c
@@ -1757,3 +1757,30 @@ gdk_device_get_last_event_window (GdkDevice *device)
 
   return info->window_under_pointer;
 }
+
+/**
+ * gdk_device_get_time:
+ * @device: a #GdkDevice
+ *
+ * Returns the timestamp of the last event involving this device that GDK has
+ * received.
+ *
+ * Returns: the timestamp of the last event for this device
+ *
+ * Since: 3.16
+ */
+guint32
+gdk_device_get_time (GdkDevice *device)
+{
+  g_return_val_if_fail (GDK_IS_DEVICE (device), 0);
+
+  return device->time;
+}
+
+void
+_gdk_device_set_time (GdkDevice *device,
+                      guint32    time)
+{
+  if (time > device->time)
+    device->time = time;
+}
diff --git a/gdk/gdkdevice.h b/gdk/gdkdevice.h
index 7e1094e..8e238ed 100644
--- a/gdk/gdkdevice.h
+++ b/gdk/gdkdevice.h
@@ -274,6 +274,9 @@ gboolean gdk_device_grab_info_libgtk_only (GdkDisplay  *display,
 GDK_AVAILABLE_IN_3_12
 GdkWindow *gdk_device_get_last_event_window (GdkDevice *device);
 
+GDK_AVAILABLE_IN_3_16
+guint32    gdk_device_get_time       (GdkDevice *device);
+
 G_END_DECLS
 
 #endif /* __GDK_DEVICE_H__ */
diff --git a/gdk/gdkdeviceprivate.h b/gdk/gdkdeviceprivate.h
index a8526b5..53a9cbb 100644
--- a/gdk/gdkdeviceprivate.h
+++ b/gdk/gdkdeviceprivate.h
@@ -56,6 +56,7 @@ struct _GdkDevice
   GList *slaves;
   GdkDeviceType type;
   GArray *axes;
+  guint32 time;
 };
 
 struct _GdkDeviceClass
@@ -173,6 +174,9 @@ GdkWindow * _gdk_device_window_at_position    (GdkDevice        *device,
                                                GdkModifierType  *mask,
                                                gboolean          get_toplevel);
 
+void _gdk_device_set_time (GdkDevice *device,
+                           guint32    time);
+
 G_END_DECLS
 
 #endif /* __GDK_DEVICE_PRIVATE_H__ */