binding_proxy.cc

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/*
    Copyright (C) 2006 Paul Davis
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    $Id$
*/

#include <string>
#include <climits>
#include <iostream>

#include <pbd/controllable.h>

#include <gtkmm2ext/binding_proxy.h>

#include "i18n.h"

using namespace Gtkmm2ext;
using namespace std;
using namespace PBD;

guint BindingProxy::bind_button = 2;
guint BindingProxy::bind_statemask = Gdk::CONTROL_MASK;

BindingProxy::BindingProxy (boost::shared_ptr<Controllable> c)
        : prompter (0),
          controllable (c)
{                         
}

BindingProxy::BindingProxy ()
        : prompter (0)
{                         
}

BindingProxy::~BindingProxy ()
{
        if (prompter) {
                delete prompter;
        }
}

void
BindingProxy::set_controllable (boost::shared_ptr<Controllable> c)
{
        learning_finished ();
        controllable = c;
}

void
BindingProxy::set_bind_button_state (guint button, guint statemask)
{
        bind_button = button;
        bind_statemask = statemask;
}

bool
BindingProxy::is_bind_action (GdkEventButton *ev)
{
        return ( (ev->state & bind_statemask) && ev->button == bind_button );
}


bool
BindingProxy::button_press_handler (GdkEventButton *ev)
{
        if ( controllable && is_bind_action(ev) ) { 
                if (Controllable::StartLearning (controllable.get())) {
                        string prompt = _("operate controller now");
                        if (prompter == 0) {
                                prompter = new PopUp (Gtk::WIN_POS_MOUSE, 30000, false);
                                prompter->signal_unmap_event().connect (mem_fun (*this, &BindingProxy::prompter_hiding));
                        }
                        prompter->set_text (prompt);
                        prompter->touch (); // shows popup
                        controllable->LearningFinished.connect_same_thread (learning_connection, boost::bind (&BindingProxy::learning_finished, this));
                }
                return true;
        }
        
        return false;
}

void
BindingProxy::learning_finished ()
{
        learning_connection.disconnect ();
        if (prompter) {
                prompter->touch (); // hides popup
        }
}


bool
BindingProxy::prompter_hiding (GdkEventAny* /*ev*/)
{
        learning_connection.disconnect ();
        if (controllable) {
                Controllable::StopLearning (controllable.get());
        }
        return false;
}