control_point_dialog.cc

/*
 * Copyright (C) 2008-2011 Carl Hetherington <carl@carlh.net>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <string>
#include <gtkmm/stock.h>

#include "gtkmm2ext/gtk_ui.h"

#include "automation_line.h"
#include "control_point.h"
#include "control_point_dialog.h"

#include "pbd/i18n.h"

/**
 *    ControlPointDialog constructor.
 *
 *    @param p ControlPoint to edit.
 */

ControlPointDialog::ControlPointDialog (ControlPoint* p, bool multi)
	: ArdourDialog (_("Control point"))
	, point_ (p)
	, toggle_all_ (_("Apply to selected points"))
	, all_selected_points_ (true)
{
	assert (point_);

	double const y_fraction = 1.0 - (p->get_y () / p->line().height ());

	/* This effectively calls ARDOUR::value_as_string */
	std::string val (p->line().fraction_to_string (y_fraction));

	/* Undo desc.toggled special cases */
	if (val == _("on")) {
		val = "1";
	} else if (val == _("off")) {
		val = "0";
	}

	/* separate quantity and unit (if any) */
	std::size_t sep = val.find_last_of (" ");

	value_.set_text (val.substr (0, sep));

	Gtk::HBox* b = Gtk::manage (new Gtk::HBox ());

	b->set_spacing (4);
	b->pack_start (*Gtk::manage (new Gtk::Label (_("Value"))));
	b->pack_start (value_);

	if (sep != std::string::npos) {
		b->pack_start (*Gtk::manage (new Gtk::Label (val.substr (sep + 1))));
	}
	get_vbox ()->pack_start (*b);

	toggle_all_.set_active (true);
	get_vbox ()->pack_start (toggle_all_);
	Gtkmm2ext::UI::instance()->set_tip (toggle_all_,
			_("<b>When enabled</b> the given value is applied to all selected automation points on the same line as the point being edited.\n\n"
			  "<b>When disabled</b> only the current automation point is modified."));
	toggle_all_.set_sensitive (multi);

	get_vbox ()->set_spacing (4);
	show_all ();

	add_button (Gtk::Stock::CANCEL, Gtk::RESPONSE_CANCEL);
	add_button (Gtk::Stock::APPLY, Gtk::RESPONSE_ACCEPT);
	set_default_response (Gtk::RESPONSE_ACCEPT);

	value_.set_activates_default ();
	/* TODO: this does not work, one has to click on the entry.. */
	value_.set_can_focus ();
	value_.grab_focus ();
}

double
ControlPointDialog::get_y_fraction (ControlPoint* p) const
{
	double const old_fraction = 1.0 - (p->get_y () / p->line().height ());

	return point_->line().string_to_fraction (value_.get_text (), old_fraction);
}

bool
ControlPointDialog::all_selected_points () const
{
	return toggle_all_.get_active ();
}