livetrax/gtk2_ardour/tempo_dialog.cc

/*
    Copyright (C) 2000-2007 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 <cstdio> // for snprintf, grrr

#include <gtkmm/stock.h>
#include <gtkmm2ext/utils.h>

#include "tempo_dialog.h"
#include "utils.h"

#include "i18n.h"

using namespace std;
using namespace Gtk;
using namespace Gtkmm2ext;
using namespace ARDOUR;
using namespace PBD;

TempoDialog::TempoDialog (TempoMap& map, framepos_t frame, const string & action)
	: ArdourDialog (_("New Tempo")),
	  bpm_adjustment (60.0, 1.0, 999.9, 0.1, 1.0),
	  bpm_spinner (bpm_adjustment),
	  ok_button (action),
	  cancel_button (_("Cancel")),
	  when_bar_label (_("bar:"), ALIGN_LEFT, ALIGN_CENTER),
	  when_beat_label (_("beat:"), ALIGN_LEFT, ALIGN_CENTER)
{
	BBT_Time when;
	Tempo tempo (map.tempo_at (frame));
	map.bbt_time (frame, when);

	init (when, tempo.beats_per_minute(), tempo.note_type(), true);
}

TempoDialog::TempoDialog (TempoSection& section, const string & action)
	: ArdourDialog ("Edit Tempo"),
	  bpm_adjustment (60.0, 1.0, 999.9, 0.1, 1.0),
	  bpm_spinner (bpm_adjustment),
	  ok_button (action),
	  cancel_button (_("Cancel")),
	  when_bar_label (_("bar:"), ALIGN_LEFT, ALIGN_CENTER),
	  when_beat_label (_("beat:"), ALIGN_LEFT, ALIGN_CENTER)
{
	init (section.start(), section.beats_per_minute(), section.note_type(), section.movable());
}

void
TempoDialog::init (const BBT_Time& when, double bpm, double note_type, bool movable)
{
	bpm_spinner.set_numeric (true);
	bpm_spinner.set_digits (2);
	bpm_spinner.set_wrap (true);
	bpm_spinner.set_value (bpm);

	strings.push_back (_("whole (1)"));
	strings.push_back (_("second (2)"));
	strings.push_back (_("third (3)"));
	strings.push_back (_("quarter (4)"));
	strings.push_back (_("eighth (8)"));
	strings.push_back (_("sixteenth (16)"));
	strings.push_back (_("thirty-second (32)"));

	set_popdown_strings (note_types, strings, true);

	if (note_type == 1.0f) {
		note_types.set_active_text (_("whole (1)"));
	} else if (note_type == 2.0f) {
		note_types.set_active_text (_("second (2)"));
	} else if (note_type == 3.0f) {
		note_types.set_active_text (_("third (3)"));
	} else if (note_type == 4.0f) {
		note_types.set_active_text (_("quarter (4)"));
	} else if (note_type == 8.0f) {
		note_types.set_active_text (_("eighth (8)"));
	} else if (note_type == 16.0f) {
		note_types.set_active_text (_("sixteenth (16)"));
	} else if (note_type == 32.0f) {
		note_types.set_active_text (_("thirty-second (32)"));
	} else {
		note_types.set_active_text (_("quarter (4)"));
	}

	Table* table = manage (new Table (3, 3));
	table->set_spacings (6);

	Label* bpm_label = manage (new Label(_("Beats per minute:"), ALIGN_LEFT, ALIGN_CENTER));
	table->attach (*bpm_label, 0, 2, 0, 1);
	table->attach (bpm_spinner, 2, 3, 0, 1);

	if (movable) {
		snprintf (buf, sizeof (buf), "%" PRIu32, when.bars);
		when_bar_entry.set_text (buf);
		snprintf (buf, sizeof (buf), "%" PRIu32, when.beats);
		when_beat_entry.set_text (buf);

		when_bar_entry.set_name ("MetricEntry");
		when_beat_entry.set_name ("MetricEntry");

		when_bar_label.set_name ("MetricLabel");
		when_beat_label.set_name ("MetricLabel");

		table->attach (when_bar_label, 1, 2, 2, 3);
		table->attach (when_bar_entry, 2, 3, 2, 3);

		table->attach (when_beat_label, 1, 2, 1, 2);
		table->attach (when_beat_entry, 2, 3, 1, 2);

		Label* when_label = manage (new Label(_("Tempo begins at"), ALIGN_LEFT, ALIGN_CENTER));
		table->attach (*when_label, 0, 1, 1, 2);
	}

	get_vbox()->set_border_width (12);
	get_vbox()->pack_end (*table);
	table->show_all ();

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

	bpm_spinner.show ();

	set_name ("MetricDialog");

	bpm_spinner.signal_activate().connect (sigc::bind (sigc::mem_fun (*this, &TempoDialog::response), RESPONSE_ACCEPT));
	bpm_spinner.signal_button_press_event().connect (sigc::mem_fun (*this, &TempoDialog::bpm_button_press), false);
	bpm_spinner.signal_button_release_event().connect (sigc::mem_fun (*this, &TempoDialog::bpm_button_release), false);
	bpm_spinner.signal_changed().connect (sigc::mem_fun (*this, &TempoDialog::bpm_changed));
	when_bar_entry.signal_activate().connect (sigc::bind (sigc::mem_fun (*this, &TempoDialog::response), RESPONSE_ACCEPT));
	when_bar_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TempoDialog::entry_key_release), false);
	when_beat_entry.signal_activate().connect (sigc::bind (sigc::mem_fun (*this, &TempoDialog::response), RESPONSE_ACCEPT));
	when_beat_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &TempoDialog::entry_key_release), false);
	note_types.signal_changed().connect (sigc::mem_fun (*this, &TempoDialog::note_types_change));
}

void
TempoDialog::bpm_changed ()
{
	set_response_sensitive (RESPONSE_ACCEPT, true);
}

bool
TempoDialog::bpm_button_press (GdkEventButton*)
{
	return false;
}

bool
TempoDialog::bpm_button_release (GdkEventButton*)
{
	/* the value has been modified, accept should work now */

	set_response_sensitive (RESPONSE_ACCEPT, true);
	return false;
}

bool
TempoDialog::entry_key_release (GdkEventKey*)
{
	if (when_beat_entry.get_text() != "" && when_bar_entry.get_text() != "") {
	        set_response_sensitive (RESPONSE_ACCEPT, true);
	} else {
	        set_response_sensitive (RESPONSE_ACCEPT, false);
	}
	return false;
}

double
TempoDialog::get_bpm ()
{
	return bpm_spinner.get_value ();
}

bool
TempoDialog::get_bbt_time (BBT_Time& requested)
{
	if (sscanf (when_bar_entry.get_text().c_str(), "%" PRIu32, &requested.bars) != 1) {
		return false;
	}

	if (sscanf (when_beat_entry.get_text().c_str(), "%" PRIu32, &requested.beats) != 1) {
		return false;
	}

	requested.ticks = 0;

	return true;
}

double
TempoDialog::get_note_type ()
{
	double note_type = 0;
	vector<string>::iterator i;
	string text = note_types.get_active_text();

	for (i = strings.begin(); i != strings.end(); ++i) {
		if (text == *i) {
			if (sscanf (text.c_str(), "%*[^0-9]%lf", &note_type) != 1) {
				error << string_compose(_("garbaged note type entry (%1)"), text) << endmsg;
				return 0;
			} else {
				break;
			}
		}
	}

	if (i == strings.end()) {
		if (sscanf (text.c_str(), "%lf", &note_type) != 1) {
			error << string_compose(_("incomprehensible note type entry (%1)"), text) << endmsg;
			return 0;
		}
	}

	return note_type;
}

void
TempoDialog::note_types_change ()
{
        set_response_sensitive (RESPONSE_ACCEPT, true);
}


MeterDialog::MeterDialog (TempoMap& map, framepos_t frame, const string & action)
	: ArdourDialog ("New Meter"),
	  ok_button (action),
	  cancel_button (_("Cancel"))
{
	BBT_Time when;
	frame = map.round_to_bar(frame,0);
	Meter meter (map.meter_at(frame));

	map.bbt_time (frame, when);
	init (when, meter.beats_per_bar(), meter.note_divisor(), true);
}

MeterDialog::MeterDialog (MeterSection& section, const string & action)
	: ArdourDialog ("Edit Meter"),
	  ok_button (action),
	  cancel_button (_("Cancel"))
{
	init (section.start(), section.beats_per_bar(), section.note_divisor(), section.movable());
}

void
MeterDialog::init (const BBT_Time& when, double bpb, double note_type, bool movable)
{
	snprintf (buf, sizeof (buf), "%.2f", bpb);
	bpb_entry.set_text (buf);
	bpb_entry.select_region (0, -1);

	strings.push_back (_("whole (1)"));
	strings.push_back (_("second (2)"));
	strings.push_back (_("third (3)"));
	strings.push_back (_("quarter (4)"));
	strings.push_back (_("eighth (8)"));
	strings.push_back (_("sixteenth (16)"));
	strings.push_back (_("thirty-second (32)"));

	set_popdown_strings (note_types, strings, true);

	if (note_type == 1.0f) {
		note_types.set_active_text (_("whole (1)"));
	} else if (note_type == 2.0f) {
		note_types.set_active_text (_("second (2)"));
	} else if (note_type == 3.0f) {
		note_types.set_active_text (_("third (3)"));
	} else if (note_type == 4.0f) {
		note_types.set_active_text (_("quarter (4)"));
	} else if (note_type == 8.0f) {
		note_types.set_active_text (_("eighth (8)"));
	} else if (note_type == 16.0f) {
		note_types.set_active_text (_("sixteenth (16)"));
	} else if (note_type == 32.0f) {
		note_types.set_active_text (_("thirty-second (32)"));
	} else {
		note_types.set_active_text (_("quarter (4)"));
	}

	Label* note_label = manage (new Label (_("Note value:"), ALIGN_LEFT, ALIGN_CENTER));
	Label* bpb_label = manage (new Label (_("Beats per bar:"), ALIGN_LEFT, ALIGN_CENTER));
	Table* table = manage (new Table (3, 2));
	table->set_spacings (6);

	table->attach (*bpb_label, 0, 1, 0, 1, FILL|EXPAND, FILL|EXPAND);
	table->attach (bpb_entry, 1, 2, 0, 1, FILL|EXPAND, FILL|EXPAND);
	table->attach (*note_label, 0, 1, 1, 2, FILL|EXPAND, FILL|EXPAND);
	table->attach (note_types, 1, 2, 1, 2, FILL|EXPAND, SHRINK);

	if (movable) {
		snprintf (buf, sizeof (buf), "%" PRIu32, when.bars);
		when_bar_entry.set_text (buf);
		when_bar_entry.set_name ("MetricEntry");

		Label* when_label = manage (new Label(_("Meter begins at bar:"), ALIGN_LEFT, ALIGN_CENTER));

		table->attach (*when_label, 0, 1, 2, 3, FILL | EXPAND, FILL | EXPAND);
		table->attach (when_bar_entry, 1, 2, 2, 3, FILL | EXPAND, FILL | EXPAND);
	} else {
		when_bar_entry.set_text ("0");
	}

	get_vbox()->set_border_width (12);
	get_vbox()->pack_start (*table, false, false);

	bpb_entry.set_name ("MetricEntry");

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

	get_vbox()->show_all ();

	set_name ("MetricDialog");
	bpb_entry.signal_activate().connect (sigc::bind (sigc::mem_fun (*this, &MeterDialog::response), RESPONSE_ACCEPT));
	bpb_entry.signal_key_press_event().connect (sigc::mem_fun (*this, &MeterDialog::entry_key_press), false);
	bpb_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &MeterDialog::entry_key_release));
	when_bar_entry.signal_activate().connect (sigc::bind (sigc::mem_fun (*this, &MeterDialog::response), RESPONSE_ACCEPT));
	when_bar_entry.signal_key_press_event().connect (sigc::mem_fun (*this, &MeterDialog::entry_key_press), false);
	when_bar_entry.signal_key_release_event().connect (sigc::mem_fun (*this, &MeterDialog::entry_key_release));

	note_types.signal_changed().connect (sigc::mem_fun (*this, &MeterDialog::note_types_change));
}

bool
MeterDialog::entry_key_press (GdkEventKey* ev)
{

	switch (ev->keyval) {

	case GDK_0:
	case GDK_1:
	case GDK_2:
	case GDK_3:
	case GDK_4:
	case GDK_5:
	case GDK_6:
	case GDK_7:
	case GDK_8:
	case GDK_9:
	case GDK_KP_0:
	case GDK_KP_1:
	case GDK_KP_2:
	case GDK_KP_3:
	case GDK_KP_4:
	case GDK_KP_5:
	case GDK_KP_6:
	case GDK_KP_7:
	case GDK_KP_8:
	case GDK_KP_9:
	case GDK_period:
	case GDK_comma:
	case  GDK_KP_Delete:
	case  GDK_KP_Enter:
	case  GDK_Delete:
	case  GDK_BackSpace:
	case  GDK_Escape:
	case  GDK_Return:
	case  GDK_Home:
	case  GDK_End:
	case  GDK_Left:
	case  GDK_Right:
	case  GDK_Num_Lock:
	case  GDK_Tab:
		return FALSE;
	default:
		break;
	}

	return TRUE;
}

bool
MeterDialog::entry_key_release (GdkEventKey*)
{
        if (when_bar_entry.get_text() != "" && bpb_entry.get_text() != "") {
	        set_response_sensitive (RESPONSE_ACCEPT, true);
	} else {
	        set_response_sensitive (RESPONSE_ACCEPT, false);
	}
	return false;
}

void
MeterDialog::note_types_change ()
{
        set_response_sensitive (RESPONSE_ACCEPT, true);
}

double
MeterDialog::get_bpb ()
{
	double bpb = 0;

	if (sscanf (bpb_entry.get_text().c_str(), "%lf", &bpb) != 1) {
		return 0;
	}

	return bpb;
}

double
MeterDialog::get_note_type ()
{
	double note_type = 0;
	vector<string>::iterator i;
	string text = note_types.get_active_text();

	for (i = strings.begin(); i != strings.end(); ++i) {
		if (text == *i) {
			if (sscanf (text.c_str(), "%*[^0-9]%lf", &note_type) != 1) {
				error << string_compose(_("garbaged note type entry (%1)"), text) << endmsg;
				return 0;
			} else {
				break;
			}
		}
	}

	if (i == strings.end()) {
		if (sscanf (text.c_str(), "%lf", &note_type) != 1) {
			error << string_compose(_("incomprehensible note type entry (%1)"), text) << endmsg;
			return 0;
		}
	}

	return note_type;
}

bool
MeterDialog::get_bbt_time (BBT_Time& requested)
{

	if (sscanf (when_bar_entry.get_text().c_str(), "%" PRIu32, &requested.bars) != 1) {
		return false;
	}

	requested.beats = 1;

	requested.ticks = 0;

	return true;
}