Re: Showing Gtk.Menu on pressing mouse button freezes the system

[Lionel Landwerlin <llandwerlin gmail com>]

Hi,

You should avoid using events from Clutter to trigger events in Gtk+ 
(and the other way).
A quick workaround is to give the hand back to the mainloop before you 
keep propagating the event (usually with a timeout 0).

The same issue was worked around in Gnome map : 
https://bugzilla.gnome.org/show_bug.cgi?id=745248

Cheers,

-
Lionel

On 05/04/16 17:35, Козлов Кирилл wrote:
> Hello.
>
> I have a test application that uses GtkClutter. Popup menu Gtk.Menu is not shown while handling 
> button_press_event of Clutter.Actor — instead the system freezes.
> Versions of packages used are:
> libgtk-3-0 — 3.18.9-1
> libclutter-1.0-0 — 1.26.0-2
> libclutter-gtk-1.0-0 — 1.6.6-1
>
> Your help would be very appreciated.
>
> *** main.vala
>     Gtk.Builder builder;
>     Gtk.Window window;
>     GtkClutter.Embed clutterEmbed;
>     Gtk.Menu popupmenu;
>     Clutter.Actor mainstage;
>
>     bool actor_clicked (Clutter.ButtonEvent evt)
>     {
>        popupmenu.popup (null, null, null, evt.button, evt.time);
>        return true;
>     }
>
>     int main (string [] args)
>     {
>        if ((GtkClutter.init (ref args)) != Clutter.InitError.SUCCESS)
>           return 1;
>
>        builder = new Gtk.Builder ();
>        try
>        {
>           builder.add_from_file ("popup_main.glade");
>        }
>        catch (GLib.Error ex)
>        {
>           assert (false);
>        }
>
>        window = new Gtk.Window ();
>        clutterEmbed = new GtkClutter.Embed ();
>        popupmenu = builder.get_object ("menu_main") as Gtk.Menu;
>        mainstage = clutterEmbed.get_stage ();
>
>        window.add (clutterEmbed);
>        mainstage.button_press_event.connect (actor_clicked);
>
>        window.show_all ();
>
>        Gtk.main ();
>        return 0;
>     }
>
> *** popup_main.glade
> <?xml version="1.0" encoding="UTF-8"?>
> <!-- Generated with glade 3.18.3 -->
> <interface>
>    <requires lib="gtk+" version="3.12"/>
>    <object class="GtkMenu" id="menu_main">
>      <property name="visible">True</property>
>      <property name="can_focus">False</property>
>      <child>
>        <object class="GtkMenuItem" id="option1">
>          <property name="visible">True</property>
>          <property name="can_focus">False</property>
>          <property name="label" translatable="yes">Element 1</property>
>          <property name="use_underline">True</property>
>        </object>
>      </child>
>      <child>
>        <object class="GtkMenuItem" id="option2">
>          <property name="visible">True</property>
>          <property name="can_focus">False</property>
>          <property name="label" translatable="yes">Element 2</property>
>        </object>
>      </child>
>      <child>
>        <object class="GtkMenuItem" id="option3">
>          <property name="visible">True</property>
>          <property name="can_focus">False</property>
>          <property name="label" translatable="yes">Element 3</property>
>        </object>
>      </child>
>    </object>
> </interface>
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