/*
    Copyright (C) 2002-2009 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.

*/

#include <iostream>
#include <gtkmm/scrolledwindow.h>
#include <gtkmm/adjustment.h>
#include <gtkmm/label.h>
#include "ardour/bundle.h"
#include "ardour/types.h"
#include "ardour/session.h"
#include "ardour/route.h"
#include "port_matrix.h"
#include "i18n.h"

/** PortMatrix constructor.
 *  @param session Our session.
 *  @param type Port type that we are handling.
 *  @param offer_inputs true to offer inputs, otherwise false.
 */
PortMatrix::PortMatrix (ARDOUR::Session& session, ARDOUR::DataType type, bool offer_inputs)
	: _row_ports (type, !offer_inputs),
	  _column_ports (type, offer_inputs),
	  _session (session),
	  _offer_inputs (offer_inputs),
	  _type (type),
	  _body (this, offer_inputs ? PortMatrixBody::BOTTOM_AND_LEFT : PortMatrixBody::TOP_AND_RIGHT)
{
	setup ();
	
	/* checkbuttons for visibility of groups */
	Gtk::HBox* visibility_buttons = Gtk::manage (new Gtk::HBox);

	visibility_buttons->pack_start (*Gtk::manage (new Gtk::Label (_("Show:"))), Gtk::PACK_SHRINK);

	for (std::list<PortGroup*>::iterator i = _column_ports.begin(); i != _column_ports.end(); ++i) {
		_port_group_uis.push_back (new PortGroupUI (this, *i));
	}

	for (std::list<PortGroupUI*>::iterator i = _port_group_uis.begin(); i != _port_group_uis.end(); ++i) {
		visibility_buttons->pack_start ((*i)->visibility_checkbutton(), Gtk::PACK_SHRINK);
	}

	pack_start (*visibility_buttons, Gtk::PACK_SHRINK);
	pack_start (_hscroll, Gtk::PACK_SHRINK);
	Gtk::HBox* hbox = Gtk::manage (new Gtk::HBox);
	hbox->pack_start (_body);
	hbox->pack_start (_vscroll, Gtk::PACK_SHRINK);
	pack_start (*hbox);

	_hscroll.signal_value_changed().connect (sigc::mem_fun (*this, &PortMatrix::hscroll_changed));
	_vscroll.signal_value_changed().connect (sigc::mem_fun (*this, &PortMatrix::vscroll_changed));
	setup_scrollbars ();

	_session.RouteAdded.connect (sigc::hide (sigc::mem_fun (*this, &PortMatrix::routes_changed)));
	routes_changed ();

	/* XXX hard-coded initial size suggestion */
	set_size_request (400, 200);
	show_all ();
}

PortMatrix::~PortMatrix ()
{
	for (std::list<PortGroupUI*>::iterator i = _port_group_uis.begin(); i != _port_group_uis.end(); ++i) {
		delete *i;
	}
}

void
PortMatrix::routes_changed ()
{
	for (std::vector<sigc::connection>::iterator i = _route_connections.begin(); i != _route_connections.end(); ++i) {
		i->disconnect ();
	}

	boost::shared_ptr<ARDOUR::RouteList> routes = _session.get_routes ();
	for (ARDOUR::RouteList::iterator i = routes->begin(); i != routes->end(); ++i) {
		_route_connections.push_back (
			(*i)->processors_changed.connect (sigc::mem_fun (*this, &PortMatrix::setup))
			);
	}

	setup ();
}

void
PortMatrix::setup ()
{
	_column_ports.gather (_session);
	_body.setup (_row_ports, _column_ports);
	setup_scrollbars ();
	queue_draw ();
}

void
PortMatrix::set_offer_inputs (bool s)
{
	_offer_inputs = s;
	_column_ports.set_offer_inputs (s);
	_row_ports.set_offer_inputs (!s);
	setup ();
}

void
PortMatrix::set_type (ARDOUR::DataType t)
{
	_type = t;
	_column_ports.set_type (t);
	_row_ports.set_type (t);
	setup ();
}

void
PortMatrix::hscroll_changed ()
{
	_body.set_xoffset (_hscroll.get_adjustment()->get_value());
}

void
PortMatrix::vscroll_changed ()
{
	_body.set_yoffset (_vscroll.get_adjustment()->get_value());
}

void
PortMatrix::setup_scrollbars ()
{
	Gtk::Adjustment* a = _hscroll.get_adjustment ();
	a->set_lower (0);
	a->set_upper (_body.full_scroll_width());
	a->set_page_size (_body.alloc_scroll_width());
	a->set_step_increment (32);
	a->set_page_increment (128);

	a = _vscroll.get_adjustment ();
	a->set_lower (0);
	a->set_upper (_body.full_scroll_height());
	a->set_page_size (_body.alloc_scroll_height());
	a->set_step_increment (32);
	a->set_page_increment (128);
}

void
PortMatrix::disassociate_all ()
{
	ARDOUR::BundleList c = _column_ports.bundles ();
	ARDOUR::BundleList r = _row_ports.bundles ();
	
	for (ARDOUR::BundleList::iterator i = c.begin(); i != c.end(); ++i) {
		for (uint32_t j = 0; j < (*i)->nchannels(); ++j) {
			for (uint32_t k = 0; k < r.front()->nchannels(); ++k) {

				set_state (
					r.front(), k, *i, j, false, 0
					);
				
			}
		}
	}

	_body.rebuild_and_draw_grid ();
}