13
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livetrax/gtk2_ardour/virtual_keyboard_window.cc

621 lines
18 KiB
C++

/*
* Copyright (C) 2019 Robin Gareus <robin@gareus.org>
*
* 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 <gtkmm/box.h>
#include "pbd/convert.h"
#include "pbd/compose.h"
#include "ardour/async_midi_port.h"
#include "ardour/session.h"
#include "gtkmm2ext/utils.h"
#include "widgets/tooltips.h"
#include "ardour_ui.h"
#include "ui_config.h"
#include "utils.h"
#include "virtual_keyboard_window.h"
#include "pbd/i18n.h"
using namespace Glib;
using namespace Gtk;
using namespace ArdourWidgets;
#define PX_SCALE(px) std::max ((float)px, rintf ((float)px* UIConfiguration::instance ().get_ui_scale ()))
VirtualKeyboardWindow::VirtualKeyboardWindow ()
: ArdourWindow (_("Virtual MIDI Keyboard"))
, _send_panic (_("Panic"), ArdourButton::default_elements)
, _pitch_adjustment (8192, 0, 16383, 1, 256)
, _modwheel_adjustment (0, 0, 127, 1, 8)
{
UIConfiguration::instance().ParameterChanged.connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::parameter_changed));
_piano.set_can_focus ();
select_keyboard_layout (UIConfiguration::instance().get_vkeybd_layout ());
_piano.set_annotate_octave (true);
_piano.set_grand_piano_highlight (false);
_piano.set_annotate_layout (true);
_piano.set_annotate_octave (true);
for (int c = 0; c < 16; ++c) {
char buf[16];
sprintf (buf, "%d", c + 1);
_midi_channel.append_text_item (buf);
}
#if 0
for (int v = 0; v <= 128; v += 16) {
char buf[16];
sprintf (buf, "%d", std::min (127, std::max (1, v)));
_piano_velocity.append_text_item (buf);
}
#else
_piano_velocity.append_text_item ("8");
_piano_velocity.append_text_item ("32");
_piano_velocity.append_text_item ("64");
_piano_velocity.append_text_item ("82");
_piano_velocity.append_text_item ("100");
_piano_velocity.append_text_item ("127");
#endif
for (int k = -1; k < 8; ++k) {
char buf[16];
sprintf (buf, "%d", k);
_piano_octave_key.append_text_item (buf);
}
for (int r = 2; r < 12; ++r) {
char buf[16];
sprintf (buf, "%d", r);
_piano_octave_range.append_text_item (buf);
}
for (int t = -12; t < 13; ++t) {
char buf[16];
sprintf (buf, "%d", t);
_transpose_output.append_text_item (buf);
}
_midi_channel.set_active ("1");
_piano_velocity.set_active ("100");
_piano_octave_key.set_active ("4");
_piano_octave_range.set_active ("7");
_transpose_output.set_active ("0");
_pitchbend = std::shared_ptr<VKBDControl> (new VKBDControl ("PB", 8192, 16383));
_pitch_slider = manage (new VSliderController (&_pitch_adjustment, _pitchbend, 0, PX_SCALE (15)));
_pitch_slider_tooltip = new Gtkmm2ext::PersistentTooltip (_pitch_slider);
_modwheel = std::shared_ptr<VKBDControl> (new VKBDControl ("MW", 0, 127));
_modwheel_slider = manage (new VSliderController (&_modwheel_adjustment, _modwheel, 0, PX_SCALE (15)));
_modwheel_tooltip = new Gtkmm2ext::PersistentTooltip (_modwheel_slider);
/* tooltips */
set_tooltip (_midi_channel, _("Set the MIDI Channel of the produced MIDI events"));
set_tooltip (_piano_octave_key, _("The center octave, and lowest octave for keyboard control. Change with Arrow left/right."));
set_tooltip (_piano_octave_range, _("Available octave range, centered around the key-octave."));
set_tooltip (_piano_velocity, _("The velocity to use with keyboard control. Use mouse-scroll for fine-grained control"));
set_tooltip (_transpose_output, _("Chromatic transpose note events. Notes transposed outside the range of 0,,127 are discarded."));
set_tooltip (_send_panic, _("Send MIDI Panic message for current channel"));
modwheel_update_tooltip (0);
pitch_bend_update_tooltip (8192);
/* prevent focus grab, let MIDI keyboard to handle key events */
_send_panic.set_can_focus (false);
_modwheel_slider->set_can_focus (false);
_pitch_slider->set_can_focus (false);
/* layout */
Table* tbl = manage (new Table);
tbl->attach (_midi_channel, 0, 1, 0, 1, SHRINK, SHRINK, 4, 0);
tbl->attach (*manage (new Label (_("Channel"))), 0, 1, 1, 2, SHRINK, SHRINK, 4, 0);
tbl->attach (*manage (new ArdourVSpacer), 1, 2, 0, 2, SHRINK, FILL, 4, 0);
tbl->attach (*_pitch_slider, 2, 3, 0, 2, SHRINK, FILL, 4, 0);
tbl->attach (*_modwheel_slider, 3, 4, 0, 2, SHRINK, FILL, 4, 0);
const int default_cc[VKBD_NCTRLS] = { 7, 8, 91, 93};
int col = 4;
for (size_t i = 0; i < VKBD_NCTRLS; ++i, ++col) {
_cc[i] = std::shared_ptr<VKBDControl> (new VKBDControl ("CC"));
_cc_knob[i] = manage (new ArdourKnob (ArdourKnob::default_elements, ArdourKnob::Flags (0)));
_cc_knob[i]->set_controllable (_cc[i]);
_cc_knob[i]->set_size_request (PX_SCALE (21), PX_SCALE (21));
_cc_knob[i]->set_name ("monitor section knob");
for (int c = 2; c < 120; ++c) {
if (c == 32) {
continue;
}
char key[32];
sprintf (key, "%d", c);
_cc_key[i].append_text_item (key);
}
tbl->attach (*_cc_knob[i], col, col + 1, 0, 1, SHRINK, SHRINK, 4, 2);
tbl->attach (_cc_key[i], col, col + 1, 1, 2, SHRINK, SHRINK, 4, 2);
_cc_key[i].StateChanged.connect (sigc::bind (sigc::mem_fun (*this, &VirtualKeyboardWindow::cc_key_changed), i));
_cc[i]->ValueChanged.connect_same_thread (_cc_connections,
boost::bind (&VirtualKeyboardWindow::control_change_knob_event_handler, this, i, _1));
update_cc (i, default_cc[i]);
}
tbl->attach (*manage (new ArdourVSpacer), col, col + 1, 0, 2, SHRINK, FILL, 4, 0);
++col;
tbl->attach (_piano_octave_key, col, col + 1, 0, 1, SHRINK, SHRINK, 4, 0);
tbl->attach (*manage (new Label (_("Octave"))), col, col + 1, 1, 2, SHRINK, SHRINK, 4, 0);
++col;
tbl->attach (_piano_octave_range, col, col + 1, 0, 1, SHRINK, SHRINK, 4, 0);
tbl->attach (*manage (new Label (_("Range"))), col, col + 1, 1, 2, SHRINK, SHRINK, 4, 0);
++col;
tbl->attach (*manage (new ArdourVSpacer), col, col + 1, 0, 2, SHRINK, FILL, 4, 0);
++col;
tbl->attach (_piano_velocity, col, col + 1, 0, 1, SHRINK, SHRINK, 4, 0);
tbl->attach (*manage (new Label (_("Velocity"))), col, col + 1, 1, 2, SHRINK, SHRINK, 4, 0);
++col;
tbl->attach (*manage (new ArdourVSpacer), col, col + 1, 0, 2, SHRINK, FILL, 4, 0);
++col;
tbl->attach (_transpose_output, col, col + 1, 0, 1, SHRINK, SHRINK, 4, 0);
tbl->attach (*manage (new Label (_("Transpose"))), col, col + 1, 1, 2, SHRINK, SHRINK, 4, 0);
++col;
tbl->attach (_send_panic, col, col + 1, 0, 2, SHRINK, SHRINK, 4, 0);
/* main layout */
Box* box1 = manage (new HBox ());
box1->pack_start (*tbl, true, false);
VBox* vbox = manage (new VBox);
vbox->pack_start (*box1, false, false, 4);
vbox->pack_start (_piano, true, true);
add (*vbox);
set_size_request_to_display_given_text (_piano_octave_key, "88", 19, 2);
set_size_request_to_display_given_text (_piano_octave_range, "88", 19, 2);
set_size_request_to_display_given_text (_piano_velocity, "888", 19, 2);
/* GUI signals */
_pitch_adjustment.signal_value_changed ().connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::pitch_slider_adjusted));
_pitchbend->ValueChanged.connect_same_thread (_cc_connections, boost::bind (&VirtualKeyboardWindow::pitch_bend_event_handler, this, _1));
_pitch_slider->StopGesture.connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::pitch_bend_release));
_modwheel_adjustment.signal_value_changed ().connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::modwheel_slider_adjusted));
_modwheel->ValueChanged.connect_same_thread (_cc_connections, boost::bind (&VirtualKeyboardWindow::control_change_event_handler, this, 1, _1));
_piano_velocity.StateChanged.connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::update_velocity_settings));
_piano_octave_key.StateChanged.connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::update_octave_key));
_piano_octave_range.StateChanged.connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::update_octave_range));
_send_panic.signal_button_release_event ().connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::send_panic_message), false);
_piano_velocity.disable_scrolling ();
_piano_velocity.signal_scroll_event().connect (sigc::mem_fun(*this, &VirtualKeyboardWindow::on_velocity_scroll_event), false);
/* piano keyboard signals */
_piano.NoteOn.connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::note_on_event_handler));
_piano.NoteOff.connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::note_off_event_handler));
_piano.SwitchOctave.connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::octave_key_event_handler));
_piano.PitchBend.connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::pitch_bend_key_event_handler));
_piano.SetVelocity.connect (sigc::mem_fun (*this, &VirtualKeyboardWindow::velocity_key_event_handler));
/* initialize GUI */
update_velocity_settings ();
update_octave_range ();
set_keep_above (true);
vbox->show_all ();
}
VirtualKeyboardWindow::~VirtualKeyboardWindow ()
{
delete _pitch_slider_tooltip;
}
void
VirtualKeyboardWindow::set_session (ARDOUR::Session* s)
{
ArdourWindow::set_session (s);
if (!_session) {
return;
}
XMLNode* node = _session->instant_xml (X_("VirtualKeyboard"));
if (node) {
set_state (*node);
}
}
void
VirtualKeyboardWindow::parameter_changed (std::string const& p)
{
if (p == "vkeybd-layout") {
select_keyboard_layout (UIConfiguration::instance().get_vkeybd_layout ());
}
}
XMLNode&
VirtualKeyboardWindow::get_state () const
{
XMLNode* node = new XMLNode (X_("VirtualKeyboard"));
node->set_property (X_("Channel"), _midi_channel.get_text ());
node->set_property (X_("Transpose"), _transpose_output.get_text ());
node->set_property (X_("KeyVelocity"), _piano_velocity.get_text ());
node->set_property (X_("Octave"), _piano_octave_key.get_text ());
node->set_property (X_("Range"), _piano_octave_range.get_text ());
for (int i = 0; i < VKBD_NCTRLS; ++i) {
char buf[16];
sprintf (buf, "CC-%d", i);
node->set_property (buf, _cc_key[i].get_text ());
}
return *node;
}
void
VirtualKeyboardWindow::set_state (const XMLNode& root)
{
if (root.name () != "VirtualKeyboard") {
return;
}
XMLNode const* node = &root;
for (int i = 0; i < VKBD_NCTRLS; ++i) {
char buf[16];
sprintf (buf, "CC-%d", i);
std::string cckey;
if (node->get_property (buf, cckey)) {
update_cc (i, PBD::atoi (cckey));
}
}
std::string s;
if (node->get_property (X_("Channel"), s)) {
uint8_t channel = PBD::atoi (_midi_channel.get_text ());
if (channel > 0 && channel < 17) {
_midi_channel.set_active (s);
}
}
if (node->get_property (X_("Transpose"), s)) {
_transpose_output.set_active (s);
}
if (node->get_property (X_("KeyVelocity"), s)) {
_piano_velocity.set_active (s);
}
if (node->get_property (X_("Octave"), s)) {
_piano_octave_key.set_active (s);
}
if (node->get_property (X_("Range"), s)) {
_piano_octave_range.set_active (s);
}
update_velocity_settings ();
update_octave_range ();
update_octave_key ();
}
bool
VirtualKeyboardWindow::on_focus_in_event (GdkEventFocus* ev)
{
_piano.grab_focus ();
return ArdourWindow::on_focus_in_event (ev);
}
void
VirtualKeyboardWindow::on_unmap ()
{
ArdourWindow::on_unmap ();
ARDOUR_UI::instance ()->reset_focus (this);
}
bool
VirtualKeyboardWindow::on_key_press_event (GdkEventKey* ev)
{
/* try propagate unmodified events first */
if ((ev->state & 0xf) == 0) {
if (gtk_window_propagate_key_event (gobj(), ev)) {
return true;
}
}
_piano.grab_focus ();
return ARDOUR_UI_UTILS::relay_key_press (ev, this);
}
bool
VirtualKeyboardWindow::on_key_release_event (GdkEventKey* ev)
{
/* try propagate unmodified events first */
if ((ev->state & 0xf) == 0) {
if (gtk_window_propagate_key_event (gobj(), ev)) {
return true;
}
}
_piano.grab_focus ();
return ArdourWindow::on_key_release_event (ev);
}
void
VirtualKeyboardWindow::select_keyboard_layout (std::string const& l)
{
_piano.set_keyboard_layout (PianoKeyBindings::layout (l));
_piano.grab_focus ();
}
void
VirtualKeyboardWindow::update_octave_key ()
{
_piano.set_octave (PBD::atoi (_piano_octave_key.get_text ()));
_piano.grab_focus ();
}
void
VirtualKeyboardWindow::update_octave_range ()
{
_piano.set_octave_range (PBD::atoi (_piano_octave_range.get_text ()));
_piano.set_grand_piano_highlight (PBD::atoi (_piano_octave_range.get_text ()) > 3);
_piano.grab_focus ();
}
bool
VirtualKeyboardWindow::send_panic_message (GdkEventButton*)
{
_piano.reset ();
uint8_t channel = PBD::atoi (_midi_channel.get_text ()) - 1;
uint8_t ev[3];
ev[0] = MIDI_CMD_CONTROL | channel;
ev[1] = MIDI_CTL_SUSTAIN;
ev[2] = 0;
_session->vkbd_output_port ()->write (ev, 3, 0);
ev[1] = MIDI_CTL_ALL_NOTES_OFF;
_session->vkbd_output_port ()->write (ev, 3, 0);
ev[1] = MIDI_CTL_RESET_CONTROLLERS;
_session->vkbd_output_port ()->write (ev, 3, 0);
return false;
}
bool
VirtualKeyboardWindow::on_velocity_scroll_event (GdkEventScroll* ev)
{
int v = PBD::atoi (_piano_velocity.get_text ());
switch (ev->direction) {
case GDK_SCROLL_DOWN:
v = std::min (127, v + 1);
break;
case GDK_SCROLL_UP:
v = std::max (1, v - 1);
break;
default:
return false;
}
char buf[16];
sprintf (buf, "%d", v);
_piano_velocity.set_active (buf);
return true;
}
void
VirtualKeyboardWindow::update_velocity_settings ()
{
int v = PBD::atoi (_piano_velocity.get_text ());
_piano.set_velocities (v, v, v);
}
void
VirtualKeyboardWindow::cc_key_changed (size_t i)
{
_cc_knob[i]->set_tooltip_prefix (string_compose (_("CC-%1: "), _cc_key[i].get_text ()));
// TODO update _cc[i]->normal
}
void
VirtualKeyboardWindow::update_cc (size_t i, int cc)
{
assert (i < VKBD_NCTRLS);
if (cc < 0 || cc > 120) {
return;
}
char buf[16];
sprintf (buf, "%d", cc);
_cc_key[i].set_active (buf);
}
void
VirtualKeyboardWindow::velocity_key_event_handler (int v)
{
if (v < 1 || v > 127) {
return;
}
char buf[16];
sprintf (buf, "%d", v);
_piano_velocity.set_active (buf);
}
void
VirtualKeyboardWindow::octave_key_event_handler (bool up)
{
int k = PBD::atoi (_piano_octave_key.get_text ()) + (up ? 1 : -1);
k = std::min (7, std::max (-1, k));
char buf[16];
sprintf (buf, "%d", k);
_piano_octave_key.set_active (buf);
}
void
VirtualKeyboardWindow::pitch_bend_key_event_handler (int target, bool interpolate)
{
int cur = _pitch_adjustment.get_value();
if (cur == target) {
return;
}
if (interpolate) {
_pitch_bend_target = target;
if (!_bender_connection.connected ()) {
float tc = _pitch_bend_target == 8192 ? .35 : .51;
cur = rintf (cur + tc * (_pitch_bend_target - cur));
_pitch_adjustment.set_value (cur);
_bender_connection = Glib::signal_timeout().connect (sigc::mem_fun(*this, &VirtualKeyboardWindow::pitch_bend_timeout), 20 /*ms*/);
}
return;
}
_bender_connection.disconnect ();
_pitch_adjustment.set_value (target);
_pitch_bend_target = target;
}
bool
VirtualKeyboardWindow::pitch_bend_timeout ()
{
int cur = _pitch_adjustment.get_value();
/* a spring would be 2nd order with overshoot,
* but we assume it's critically damped */
float tc = _pitch_bend_target == 8192 ? .35 : .51;
cur = rintf (cur + tc * (_pitch_bend_target - cur));
if (abs (cur - _pitch_bend_target) < 2) {
cur = _pitch_bend_target;
}
_pitch_adjustment.set_value (cur);
return _pitch_bend_target != cur;
}
void
VirtualKeyboardWindow::pitch_slider_adjusted ()
{
_pitchbend->set_value (_pitch_adjustment.get_value (), PBD::Controllable::NoGroup);
pitch_bend_update_tooltip (_pitch_adjustment.get_value ());
}
void
VirtualKeyboardWindow::pitch_bend_update_tooltip (int value)
{
_pitch_slider_tooltip->set_tip (string_compose (
_("Pitchbend: %1\n"
"Use mouse-drag for sprung mode,\n"
"mouse-wheel for persistent bends.\n"
"F1-F4 and arrow-up/down keys jump\n"
"to select values."), value));
}
void
VirtualKeyboardWindow::modwheel_slider_adjusted ()
{
_modwheel->set_value (_modwheel_adjustment.get_value (), PBD::Controllable::NoGroup);
modwheel_update_tooltip (_modwheel_adjustment.get_value ());
}
void
VirtualKeyboardWindow::modwheel_update_tooltip (int value)
{
_modwheel_tooltip->set_tip (string_compose (_("Modulation: %1"), value));
}
void
VirtualKeyboardWindow::note_on_event_handler (int note, int velocity)
{
_piano.grab_focus ();
if (!_session) {
return;
}
note += PBD::atoi (_transpose_output.get_text ());
if (note < 0 || note > 127) {
return;
}
uint8_t channel = PBD::atoi (_midi_channel.get_text ()) - 1;
uint8_t ev[3];
ev[0] = MIDI_CMD_NOTE_ON | channel;
ev[1] = note;
ev[2] = velocity;
_session->vkbd_output_port ()->write (ev, 3, 0);
}
void
VirtualKeyboardWindow::note_off_event_handler (int note)
{
if (!_session) {
return;
}
note += PBD::atoi (_transpose_output.get_text ());
if (note < 0 || note > 127) {
return;
}
uint8_t channel = PBD::atoi (_midi_channel.get_text ()) - 1;
uint8_t ev[3];
ev[0] = MIDI_CMD_NOTE_OFF | channel;
ev[1] = note;
ev[2] = 0;
_session->vkbd_output_port ()->write (ev, 3, 1);
}
void
VirtualKeyboardWindow::control_change_knob_event_handler (int key, int val)
{
assert (key >= 0 && key < VKBD_NCTRLS);
int ctrl = PBD::atoi (_cc_key[key].get_text ());
assert (ctrl > 0 && ctrl < 127);
control_change_event_handler (ctrl, val);
}
void
VirtualKeyboardWindow::control_change_event_handler (int ctrl, int val)
{
if (!_session) {
return;
}
uint8_t channel = PBD::atoi (_midi_channel.get_text ()) - 1;
uint8_t ev[3];
ev[0] = MIDI_CMD_CONTROL | channel;
ev[1] = ctrl & 0x7f;
ev[2] = val & 0x7f;
_session->vkbd_output_port ()->write (ev, 3, 0);
}
void
VirtualKeyboardWindow::pitch_bend_event_handler (int val)
{
if (!_session) {
return;
}
uint8_t channel = PBD::atoi (_midi_channel.get_text ()) - 1;
uint8_t ev[3];
ev[0] = MIDI_CMD_BENDER | channel;
ev[1] = val & 0x7f;
ev[2] = (val >> 7) & 0x7f;
_session->vkbd_output_port ()->write (ev, 3, 0);
}
void
VirtualKeyboardWindow::pitch_bend_release (int)
{
_pitch_adjustment.set_value (8192);
}