Axel Simon <axel.si...@in.tum.de> writes: > Hi Andy, > > On 30.06.2010, at 06:12, Andy Stewart wrote: > >> Hi Axel, >> >> I have multi-processese framework like Google Chrome, below is screenshot: >> >> http://farm5.static.flickr.com/4137/4747331678_441d6eb8ec_b.jpg >> >> UI is is render in parent processes with GtkSocket, so all keyPress >> event is handle by parent top-level window, i will send key DBus message >> to child process if current key is not handle by parent process Window. >> >> In my screenshot, up is webkit browser, down is editor. All those sub-module >> is running in child >> process. In editor, i can use some APIs emulate insert key after i receive >> key >> message from DBus. But WebKitGTK+ haven't open APIs let me do some *insert >> key* >> event. So i need propagate key event on WebKit widget in child process. >> >> For propagate key event on child widget, i found three functions: >> >> gtk_propagate_event >> (http://library.gnome.org/devel/gtk/unstable/gtk3-General.html#gtk-propagate-event >> ) >> gtk_widget_event >> (http://library.gnome.org/devel/gtk/unstable/GtkWidget.html#gtk-widget-event >> ) >> gtk_main_do_event >> (http://library.gnome.org/devel/gtk/unstable/gtk3-General.html#gtk-main-do-event >> ) >> >> And gtk_main_do_event is right method to synthesize event in child process >> widget. >> >> For my situation, i need convection Key (include attribute eventRelease, >> eventSent, eventTime...etc) from ParentProcess to ChildProcess by DBus, >> then use "mainDoEvent :: Event -> IO ()" propagate key event with WebKit >> child process. >> >> So my question is how to binding gtk_main_do_event ? >> Looks I should use Graphics.UI.Gtk.Gdk.Events.Event and not EventM. >> > > Event is deprecated and will be removed soon. The problem with the C Event > structure is that it can > contains pointers and varying fields. Event did not mangage to translate all > of them, also because > new event are being added to Gtk+ occasionally. If you want to convert a C > Event structure > completely to Haskell, send it over the network and then reemit the event > inside a different > application, I suggest that you start with the Event module and create an > opaque but serializable > data type. This data type should contain some events of interest (keys, > mouse) but not all > events. You would probably need to re-insert the time stamp of the event > when you reemit it in the > other application. > > If you implement this, then the extraction of an event should be a function > > serializeEvent :: EventM t SerializedEvent > > that runs in the EventM monad. It should throw an exception if it is applied > to an event that it > can't handle. > > Then at the client side, we can implement gtk_main_do_event as > > mainDoEvent :: EventM t () > > and have > > deserializeEvent :: SerializedEvent -> (EventM t a) -> IO a > > which executes any EventM function with the serialized event. > > Let me know if you need further help. The functions in Event.hs may help you > to get started with > marshalling the events, but you should use the EventM interface as described > above. Thanks for your help, very detailed.
I will share my library after i finish serializeEvent and deserializeEvent. Cheers, -- Andy > > Cheers, > Axel > > > >> Thanks! >> >> -- Andy >> >> >> >> >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by Sprint >> What will you do first with EVO, the first 4G phone? >> Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first >> _______________________________________________ >> Gtk2hs-devel mailing list >> Gtk2hs-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/gtk2hs-devel ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Gtk2hs-devel mailing list Gtk2hs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gtk2hs-devel
