Re: Gtk2::MozEmbed + DOM

[muppet <scott asofyet org>]

On Mar 21, 2005, at 4:55 AM, Scott Lanning wrote:

> I looked last night at adding the dom_* signals
> to Gtk2::MozEmbed. I appended my notes, but it's going
> very slowly... Assuming nobody is working on it already,
> if someone (probably Torsten) could explain roughly what
> would be necessary or where I could look for an example,
> I would appreciate it.

search through the gtk+ source for the xs files that #include 
gperl_marshal.h, as those will have custom marshalers.  also read the 
comments in that header.

you will probably have to add typemap entries for some of the dom types 
if you are going to bind them; as i doubt the dom types have glib type 
system support, you'll probably have to revert to standard perl 
extension techniques.

> A good source of info is the Binding Howto 
> http://gtk2-perl.sourceforge.net/doc/binding_howto.pod.html though I 
> don't know Gtk2/Glib well enough for some of it to make much sense.

just ask, i'd be happy to clarify.


> Need a marshaller for dom event signals, apparently because of the 
> `gpointer dom_event' arguments?

yes.  gpointer is just a generic pointer, with no other type 
information.  therefore, the generic marshaler has no idea how to wrap 
this object and just treats it as an unsigned integer.  the custom 
marshaler is needed to wrap it the right way.


> mozilla-source-1.7.5/embedding/browser/gtk/src/gtkmozembed.h:
>
>   gint (* dom_key_down)        (GtkMozEmbed *embed, gpointer 
> dom_event);
>   gint (* dom_key_press)       (GtkMozEmbed *embed, gpointer 
> dom_event);
>   gint (* dom_key_up)          (GtkMozEmbed *embed, gpointer 
> dom_event);
>   gint (* dom_mouse_down)      (GtkMozEmbed *embed, gpointer 
> dom_event);
>   gint (* dom_mouse_up)        (GtkMozEmbed *embed, gpointer 
> dom_event);
>   gint (* dom_mouse_click)     (GtkMozEmbed *embed, gpointer 
> dom_event);
>   gint (* dom_mouse_dbl_click) (GtkMozEmbed *embed, gpointer 
> dom_event);
>   gint (* dom_mouse_over)      (GtkMozEmbed *embed, gpointer 
> dom_event);
>   gint (* dom_mouse_out)       (GtkMozEmbed *embed, gpointer 
> dom_event);

would hope you could use the same marshaler for all of them.

> The DOM event interfaces also have their own methods. Do those have to 
> be wrapped?

if you need to use the events, then they need to be wrapped.  i suspect 
you'll need to use the events to find out what happened.

--
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Chris: That explains all that gravity.
        -- Family Guy, "The Story on Page One"