[Vala] Access Clutter Script Actor in Event handler

[Brian Duffy <brduffy gmail com>]

Hi again,

I'm trying to get clutter script working with vala. I can't figure out how
to access my rectangle in its button-press-event handler. how can I define
the params of the handler to get access to the ui object? ...

thnx

using Clutter;
using GLib;


bool button_press (ButtonEvent event, Script ui) {   // wrong
   stdout.printf("%s", "button press event");
   Rectangle rect = (Rectangle)ui.get_object ("rectangle");  // this
segfaults
   //rect.set_color(Color.from_string("white"));
   return true;
}


int main (string[] args) {

  //Stage stage = Stage.get_default();
  string filename = "gui_test.json";

  if (Clutter.init(ref args) != Clutter.InitError.SUCCESS) {
    stdout.printf("%s", "Error Initializing Clutter");
    return 1;
  }

  Script ui = new Script();
  uint merge_id = ui.load_from_file (filename);
  if (merge_id == 0)
    {
       stdout.printf("%s", "Error Loading ClutterScript");
       return 1;
    }

  ui.connect_signals (ui);

  Stage stage = (Stage)ui.get_object ("stage");
  /* make the objects in the script available to all signals
   * by passing the script as the second argument
   * to clutter_script_connect_signals()
   */

  stage.show_all();

  Clutter.main();

  return 0;
}


[clutter script]

[
  {
    "id" : "stage",
    "type" : "ClutterStage",
    "width" : 300,
    "height" : 300,
    "color" : "#335",

    "signals" : [
      { "name" : "hide", "handler" : "clutter_main_quit" }
    ],

    "children" : [ "rectangle" ]
  },

  {
    "id" : "rectangle",
    "type" : "ClutterRectangle",
    "width" : 200,
    "height" : 200,
    "x" : 50,
    "y" : 50,
    "color" : "#a90",
    "rotation-center-z-gravity" : "center",
    "reactive" : true,

    "signals" : [
      { "name" : "button-press-event", "handler" : "button_press" }
    ],

    "actions" : [
      {
        "type" : "ClutterClickAction",
        "signals" : [
          { "name" : "clicked", "handler" : "button_press" }
        ]
      }
    ]
  }
]
-- 
Duff