Hi,
if you want to pass user data to a signal handler you should connect the
signal in the code rather than by the script. The vala code may look
like this:
using Clutter;
using GLib;
public bool button_press (Actor actor, Script ui) {
stdout.printf("button press event");
Rectangle rect = (Rectangle)ui.get_object ("rectangle");
rect.set_color(Color.from_string("white"));
return true;
}
public bool key_pressed (KeyEvent event) {
stdout.printf ("Key pressed : %d \n", event.hardware_keycode);
Clutter.main_quit ();
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("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 (null);
Stage stage = (Stage)ui.get_object ("stage");
stage.button_press_event.connect (() => {button_press (stage, ui);
return true;});
stage.key_press_event.connect (key_pressed);
stage.show_all();
Clutter.main();
return 0;
}
and the json-file (slightly simpler) like this:
[
{
"id" : "stage",
"type" : "ClutterStage",
"width" : 300,
"height" : 300,
"color" : "#335",
"signals" : [
{ "name" : "hide", "handler" : "clutter_main_quit" }
],
"children" : [
{
"id" : "rectangle",
"type" : "ClutterRectangle",
"width" : 200,
"height" : 200,
"x" : 50,
"y" : 50,
"color" : "#a90",
"rotation-center-z-gravity" : "center",
"reactive" : true
}
]
}
]
On Mi, 2012-01-25 at 16:55 -0500, Brian Duffy wrote:
> 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;
> }
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