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livetrax/gtk2_ardour/tempo_dialog.cc
nick_m 7fc3b0c34c Initial stab at tempo ramps. 
Replaces the list of points in TempoMap with TempoSection functions, which
compute tempo-at or tick-at time relative to tempo section start.
TempoMap consults them additively to determine things like bbt_time(),
frame_time() get_grid() etc.
This has a marked effect on scrolling speed along with the code simplification
in the places it has been attempted.

Several things are broken here.
Currently every ramp except the last one is an exponential ramp. this may
be simple to fix :).
Mouse-over midi grid doesn't match mouse click grid. should also be simple.

Many things seem to work, but their accuracy should be in question until
each area has been addressed.
2016-05-27 23:38:09 +10:00

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/*
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 "ui_config.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&)
: ArdourDialog (_("New Tempo"))
, bpm_adjustment (60.0, 1.0, 999.9, 0.1, 1.0)
, bpm_spinner (bpm_adjustment)
, when_bar_label (_("bar:"), ALIGN_LEFT, ALIGN_CENTER)
, when_beat_label (_("beat:"), ALIGN_LEFT, ALIGN_CENTER)
, pulse_selector_label (_("Pulse note"), ALIGN_LEFT, ALIGN_CENTER)
, tap_tempo_button (_("Tap tempo"))
{
Timecode::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&)
: ArdourDialog (_("Edit Tempo"))
, bpm_adjustment (60.0, 1.0, 999.9, 0.1, 1.0)
, bpm_spinner (bpm_adjustment)
, when_bar_label (_("bar:"), ALIGN_LEFT, ALIGN_CENTER)
, when_beat_label (_("beat:"), ALIGN_LEFT, ALIGN_CENTER)
, pulse_selector_label (_("Pulse note"), ALIGN_LEFT, ALIGN_CENTER)
, tap_tempo_button (_("Tap tempo"))
{
init (section.start(), section.beats_per_minute(), section.note_type(), section.movable());
}
void
TempoDialog::init (const Timecode::BBT_Time& when, double bpm, double note_type, bool movable)
{
vector<string> strings;
NoteTypes::iterator x;
bpm_spinner.set_numeric (true);
bpm_spinner.set_digits (2);
bpm_spinner.set_wrap (true);
bpm_spinner.set_value (bpm);
bpm_spinner.set_alignment (1.0);
note_types.insert (make_pair (_("whole"), 1.0));
strings.push_back (_("whole"));
note_types.insert (make_pair (_("second"), 2.0));
strings.push_back (_("second"));
note_types.insert (make_pair (_("third"), 3.0));
strings.push_back (_("third"));
note_types.insert (make_pair (_("quarter"), 4.0));
strings.push_back (_("quarter"));
note_types.insert (make_pair (_("eighth"), 8.0));
strings.push_back (_("eighth"));
note_types.insert (make_pair (_("sixteenth"), 16.0));
strings.push_back (_("sixteenth"));
note_types.insert (make_pair (_("thirty-second"), 32.0));
strings.push_back (_("thirty-second"));
note_types.insert (make_pair (_("sixty-fourth"), 64.0));
strings.push_back (_("sixty-fourth"));
note_types.insert (make_pair (_("one-hundred-twenty-eighth"), 128.0));
strings.push_back (_("one-hundred-twenty-eighth"));
set_popdown_strings (pulse_selector, strings);
for (x = note_types.begin(); x != note_types.end(); ++x) {
if (x->second == note_type) {
pulse_selector.set_active_text (x->first);
break;
}
}
if (x == note_types.end()) {
pulse_selector.set_active_text (strings[3]); // "quarter"
}
strings.clear();
tempo_types.insert (make_pair (_("ramped"), TempoSection::TempoSectionType::Ramp));
strings.push_back (_("ramped"));
tempo_types.insert (make_pair (_("constant"), TempoSection::TempoSectionType::Constant));
strings.push_back (_("constant"));
set_popdown_strings (tempo_type, strings);
tempo_type.set_active_text (strings[0]); // "ramped"
Table* table;
if (UIConfiguration::instance().get_allow_non_quarter_pulse()) {
table = manage (new Table (5, 6));
} else {
table = manage (new Table (5, 5));
}
table->set_spacings (6);
table->set_homogeneous (false);
int row;
Label* bpm_label = manage (new Label(_("Beats per minute:"), ALIGN_LEFT, ALIGN_CENTER));
table->attach (*bpm_label, 0, 1, 0, 1);
table->attach (bpm_spinner, 1, 5, 0, 1);
if (UIConfiguration::instance().get_allow_non_quarter_pulse()) {
table->attach (pulse_selector_label, 0, 1, 1, 2);
table->attach (pulse_selector, 1, 5, 1, 2);
row = 2;
} else {
row = 1;
}
char buf[64];
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);
if (movable) {
when_bar_entry.set_width_chars(4);
when_beat_entry.set_width_chars (4);
when_bar_entry.set_alignment (1.0);
when_beat_entry.set_alignment (1.0);
when_bar_label.set_name ("MetricLabel");
when_beat_label.set_name ("MetricLabel");
table->attach (when_bar_label, 1, 2, row, row+1, Gtk::AttachOptions(0), Gtk::AttachOptions(0));
table->attach (when_bar_entry, 2, 3, row, row+1, Gtk::AttachOptions(0), Gtk::AttachOptions(0));
table->attach (when_beat_label, 3, 4, row, row+1, Gtk::AttachOptions(0), Gtk::AttachOptions(0));
table->attach (when_beat_entry, 4, 5, row, row+1, Gtk::AttachOptions(0), Gtk::AttachOptions(0));
Label* when_label = manage (new Label(_("Tempo begins at"), ALIGN_LEFT, ALIGN_CENTER));
table->attach (*when_label, 0, 1, row, row+1);
}
Label* tempo_type_label = manage (new Label(_("Tempo Type:"), ALIGN_LEFT, ALIGN_CENTER));
table->attach (*tempo_type_label, 0, 1, row+1, row+2);
table->attach (tempo_type, 1, 2, row+1, row + 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, true);
set_default_response (RESPONSE_ACCEPT);
bpm_spinner.show ();
tap_tempo_button.show ();
get_vbox()->pack_end (tap_tempo_button);
bpm_spinner.grab_focus ();
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);
pulse_selector.signal_changed().connect (sigc::mem_fun (*this, &TempoDialog::pulse_change));
tap_tempo_button.signal_button_press_event().connect (sigc::mem_fun (*this, &TempoDialog::tap_tempo_button_press), false);
tap_tempo_button.signal_focus_out_event().connect (sigc::mem_fun (*this, &TempoDialog::tap_tempo_focus_out));
tapped = false;
}
bool
TempoDialog::is_user_input_valid() const
{
return (when_beat_entry.get_text() != "")
&& (when_bar_entry.get_text() != "")
&& (when_bar_entry.get_text() != "0");
}
void
TempoDialog::bpm_changed ()
{
set_response_sensitive (RESPONSE_ACCEPT, is_user_input_valid());
}
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, is_user_input_valid());
return false;
}
bool
TempoDialog::entry_key_release (GdkEventKey*)
{
set_response_sensitive (RESPONSE_ACCEPT, is_user_input_valid());
return false;
}
double
TempoDialog::get_bpm ()
{
return bpm_spinner.get_value ();
}
bool
TempoDialog::get_bbt_time (Timecode::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 ()
{
NoteTypes::iterator x = note_types.find (pulse_selector.get_active_text());
if (x == note_types.end()) {
error << string_compose(_("incomprehensible pulse note type (%1)"), pulse_selector.get_active_text()) << endmsg;
return 0;
}
return x->second;
}
TempoSection::TempoSectionType
TempoDialog::get_tempo_type ()
{
TempoTypes::iterator x = tempo_types.find (tempo_type.get_active_text());
if (x == tempo_types.end()) {
error << string_compose(_("incomprehensible pulse note type (%1)"), tempo_type.get_active_text()) << endmsg;
return TempoSection::TempoSectionType::Constant;
}
return x->second;
}
void
TempoDialog::pulse_change ()
{
set_response_sensitive (RESPONSE_ACCEPT, is_user_input_valid());
}
bool
TempoDialog::tap_tempo_button_press (GdkEventButton *ev)
{
double t;
// Linear least-squares regression
if (tapped) {
t = 1e-6 * (g_get_monotonic_time () - first_t); // Subtract first_t to avoid precision problems
double n = tap_count;
sum_y += t;
sum_x += n;
sum_xy += n * t;
sum_xx += n * n;
double T = (sum_xy/n - sum_x/n * sum_y/n) / (sum_xx/n - sum_x/n * sum_x/n);
if (t - last_t < T / 1.2 || t - last_t > T * 1.2) {
tapped = false;
} else {
bpm_spinner.set_value (60.0 / T);
}
}
if (!tapped) {
first_t = g_get_monotonic_time ();
t = 0.0;
sum_y = 0.0;
sum_x = 1.0;
sum_xy = 0.0;
sum_xx = 1.0;
tap_count = 1.0;
tapped = true;
}
tap_count++;
last_t = t;
return true;
}
bool
TempoDialog::tap_tempo_focus_out (GdkEventFocus* )
{
tapped = false;
return false;
}
MeterDialog::MeterDialog (TempoMap& map, framepos_t frame, const string&)
: ArdourDialog (_("New Meter"))
{
Timecode::BBT_Time when;
frame = map.round_to_bar(frame, RoundNearest);
Meter meter (map.meter_at(frame));
map.bbt_time (frame, when);
init (when, meter.divisions_per_bar(), meter.note_divisor(), true);
}
MeterDialog::MeterDialog (MeterSection& section, const string&)
: ArdourDialog (_("Edit Meter"))
{
init (section.start(), section.divisions_per_bar(), section.note_divisor(), section.movable());
}
void
MeterDialog::init (const Timecode::BBT_Time& when, double bpb, double divisor, bool movable)
{
char buf[64];
vector<string> strings;
NoteTypes::iterator x;
snprintf (buf, sizeof (buf), "%.2f", bpb);
bpb_entry.set_text (buf);
bpb_entry.select_region (0, -1);
bpb_entry.set_alignment (1.0);
note_types.insert (make_pair (_("whole"), 1.0));
strings.push_back (_("whole"));
note_types.insert (make_pair (_("second"), 2.0));
strings.push_back (_("second"));
note_types.insert (make_pair (_("third"), 3.0));
strings.push_back (_("third"));
note_types.insert (make_pair (_("quarter"), 4.0));
strings.push_back (_("quarter"));
note_types.insert (make_pair (_("eighth"), 8.0));
strings.push_back (_("eighth"));
note_types.insert (make_pair (_("sixteenth"), 16.0));
strings.push_back (_("sixteenth"));
note_types.insert (make_pair (_("thirty-second"), 32.0));
strings.push_back (_("thirty-second"));
note_types.insert (make_pair (_("sixty-fourth"), 64.0));
strings.push_back (_("sixty-fourth"));
note_types.insert (make_pair (_("one-hundred-twenty-eighth"), 128.0));
strings.push_back (_("one-hundred-twenty-eighth"));
set_popdown_strings (note_type, strings);
for (x = note_types.begin(); x != note_types.end(); ++x) {
if (x->second == divisor) {
note_type.set_active_text (x->first);
break;
}
}
if (x == note_types.end()) {
note_type.set_active_text (strings[3]); // "quarter"
}
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_type, 1, 2, 1, 2, FILL|EXPAND, SHRINK);
snprintf (buf, sizeof (buf), "%" PRIu32, when.bars);
when_bar_entry.set_text (buf);
when_bar_entry.set_alignment (1.0);
if (movable) {
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);
}
get_vbox()->set_border_width (12);
get_vbox()->pack_start (*table, false, false);
add_button (Stock::CANCEL, RESPONSE_CANCEL);
add_button (Stock::APPLY, RESPONSE_ACCEPT);
set_response_sensitive (RESPONSE_ACCEPT, true);
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_type.signal_changed().connect (sigc::mem_fun (*this, &MeterDialog::note_type_change));
}
bool
MeterDialog::is_user_input_valid() const
{
return (when_bar_entry.get_text() != "")
&& (when_bar_entry.get_text() != "0")
&& (bpb_entry.get_text() != "");
}
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*)
{
set_response_sensitive (RESPONSE_ACCEPT, is_user_input_valid());
return false;
}
void
MeterDialog::note_type_change ()
{
set_response_sensitive (RESPONSE_ACCEPT, is_user_input_valid());
}
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 ()
{
NoteTypes::iterator x = note_types.find (note_type.get_active_text());
if (x == note_types.end()) {
error << string_compose(_("incomprehensible meter note type (%1)"), note_type.get_active_text()) << endmsg;
return 0;
}
return x->second;
}
bool
MeterDialog::get_bbt_time (Timecode::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;
}
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