[maemo-developers] GtkAction vs. AppMenu

[From: Cornelius Hald]

On Thu, 2009-05-21 at 17:28 +0200, Alberto Garcia wrote:
> On Tue, May 19, 2009 at 05:24:47PM +0200, Cornelius Hald wrote:
> 
> First of all, sorry for the delay :)

No problem at all. I really appreciate your help :)

> They are not supposed to show up, but they should work. I've just
> tested it here and it works fine. If you can send your test case I can
> take a look at it.

Well, I don't really have a test case, but rather a complete
application ;) The complete source can be found here:
https://garage.maemo.org/viewvc/trunk/conboy/src/interface.c?view=markup&root=conboy&pathrev=134
The menu starts around line 280. Note that Fremantle specific code is
marked with #ifdef HILDON_HAS_APP_MENU.

But so that you don't have to read through this big and ugly file, I'll
try to outline what I do with one of the actions. Casts etc. are removed
to make it less cluttered:

action = gtk_toggle_action_new("bold", "Bold", NULL, GTK_STOCK_BOLD));
gtk_action_set_accel_group(action, accel_group);
gtk_action_set_accel_path(action, ACCEL_PATH_STYLE_BOLD);
gtk_accel_map_add_entry(ACCEL_PATH_STYLE_BOLD, GDK_b, GDK_CONTROL_MASK);

text_style_menu = hildon_app_menu_new();

menu_bold = gtk_button_new();
gtk_action_connect_proxy(action_bold, menu_bold);
hildon_app_menu_append(text_style_menu, menu_bold);

The result is a menu with the correct labels on the buttons and the
correct behavior - only the accelerators (here Ctrl+b) do not work.

> > 2) How do I get my GtkRadioActions to work with the HildonAppMenu? I
> > created the the buttons with gtk_radio_button_new() and then used
> > gtk_action_connect_proxy() like with the normal GtkActions above.
> > The problem is that now all of the radio buttons are selected active
> > at the same time.
> 
> Try using gtk_radio_button_new_from_widget () to create all buttons
> after the first one.

I'll tried in three different ways with different outcomes.
Unfortunately non of them was good :(

First, my GtkRadioActions are set up like this:
	
a1 = gtk_radio_action_new("size:small",  "Small"),  NULL, NULL, 0);
a2 = gtk_radio_action_new("size:normal", "Normal"), NULL, NULL, 1);
a3 = gtk_radio_action_new("size:large",  "Large"),  NULL, NULL, 2);

gtk_radio_action_set_group(a1, action_group);
action_group = gtk_radio_action_get_group(a1);

gtk_radio_action_set_group(a2, action_group);
action_group = gtk_radio_action_get_group(a2);

gtk_radio_action_set_group(a3, action_group);
action_group = gtk_radio_action_get_group(a3);

gtk_radio_action_set_current_value(a2, 1);

Now we come to the part, where I create the buttons. I tried these three
different ways:

/* Correctly shown, but not reacting on
gtk_radio_action_set_current_value() */
but1 = gtk_radio_button_new(NULL);
but2 = gtk_radio_button_new_from_widget(but1);
but3 = gtk_radio_button_new_from_widget(but1);

/* All shown as active */
but1 = gtk_radio_button_new(NULL);
but2 = gtk_radio_button_new(NULL);
but3 = gtk_radio_button_new(NULL);

/* Same effect as with NULL /*
but1 = gtk_radio_button_new(action_group);
but2 = gtk_radio_button_new(action_group);
but3 = gtk_radio_button_new(action_group);

Then I simply connect the buttons with the actions

gtk_action_connect_proxy(a1, but1);
gtk_action_connect_proxy(a2, but2);
gtk_action_connect_proxy(a3, but3);


In all cases the label text is correctly taken from the actions, so I
would say there is a connection somehow. I couldn't find examples for
using GtkRadioAction with GtkRadioButton and gtk_action_connect_proxy()
on the net, so it would really help me if you would take the time to
look into it again :)

Thanks!
Conny