gdk3: implement Gdk::EventTouch methods

[kou]

Gdk::EventTouch is added since GTK+ 3.4. But we don't implement its accessors yet.

See also: https://github.com/ruby-gnome2/ruby-gnome2/blob/master/gdk3/ext/gdk3/rbgdkevent.c#L978

[cosmo0920]

I tried to implement Gdk::EventTouch accessors like this:

diff --git a/gdk3/ext/gdk3/rbgdkevent.c b/gdk3/ext/gdk3/rbgdkevent.c
index f643bbf..61540a5 100644
--- a/gdk3/ext/gdk3/rbgdkevent.c
+++ b/gdk3/ext/gdk3/rbgdkevent.c
@@ -720,6 +720,20 @@ ATTR_GOBJ(button, device);
 ATTR_FLOAT(button, x_root);
 ATTR_FLOAT(button, y_root);

+/* GdkEventTouch */
+ATTR_GOBJ(touch, window);
+ATTR_INT(touch, send_event);
+ATTR_UINT(touch, time);
+ATTR_FLOAT(touch, x);
+ATTR_FLOAT(touch, y);
+ATTR_AXES(touch, GdkEventTouch);
+ATTR_FLAGS(touch, state, GDK_TYPE_MODIFIER_TYPE);
+ATTR_GOBJ(touch, sequence); //compile passed, but why?
+ATTR_BOOL(touch, emulating_pointer);
+ATTR_GOBJ(touch, device);
+ATTR_FLOAT(touch, x_root);
+ATTR_FLOAT(touch, y_root);
+
 /* GdkEventScroll */
 ATTR_UINT(scroll, time);
 ATTR_FLOAT(scroll, x);
@@ -975,7 +989,6 @@ Init_gdk_event(VALUE mGdk)
     rb_cGdkEventTouch =
         G_DEF_CLASS_WITH_PARENT(GDK_TYPE_EVENT_TOUCH, "EventTouch",
                                 mGdk, rb_cGdkEvent);
-/* TODO: implement me.
     DEFINE_ACCESSOR(rb_cGdkEventTouch, touch, window);
     DEFINE_ACCESSOR(rb_cGdkEventTouch, touch, send_event);
     DEFINE_ACCESSOR(rb_cGdkEventTouch, touch, time);
@@ -989,7 +1002,6 @@ Init_gdk_event(VALUE mGdk)
     DEFINE_ACCESSOR(rb_cGdkEventTouch, touch, device);
     DEFINE_ACCESSOR(rb_cGdkEventTouch, touch, x_root);
     DEFINE_ACCESSOR(rb_cGdkEventTouch, touch, y_root);
-*/

     /* GdkEventScroll */
     rb_cGdkEventScroll =

But, I didn't fully understand how works ATTR* macro series and how to treat GdkEventSequence *sequence.

[kou]

If you write tests into https://github.com/ruby-gnome2/ruby-gnome2/blob/master/gdk3/test/test-gdk-event.rb , you will know about ATTR* macros. Could you try it?

GdkEventSequence is... Umm. It will be useless. So we don't need to bind it.

[cosmo0920]

If you write tests into https://github.com/ruby-gnome2/ruby-gnome2/blob/master/gdk3/test/test-gdk-event.rb , you will know about ATTR* macros. Could you try it?

Oh, I'll try to write Gdk::EventTouch test!

[kou]

Thanks!