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livetrax/libs/surfaces/launchpad_x/gui.cc

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/*
* Copyright (C) 2016 Paul Davis <paul@linuxaudiosystems.com>
*
* 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/alignment.h>
#include <gtkmm/label.h>
#include <gtkmm/liststore.h>
#include "pbd/unwind.h"
#include "pbd/strsplit.h"
#include "pbd/file_utils.h"
#include "gtkmm2ext/bindings.h"
#include "gtkmm2ext/gui_thread.h"
#include "gtkmm2ext/utils.h"
#include "ardour/audioengine.h"
#include "ardour/filesystem_paths.h"
#include "ardour/parameter_descriptor.h"
#include "lpx.h"
#include "gui.h"
#include "pbd/i18n.h"
using namespace PBD;
using namespace ARDOUR;
using namespace ArdourSurface;
using namespace Gtk;
using namespace Gtkmm2ext;
void*
LaunchPadX::get_gui () const
{
if (!_gui) {
const_cast<LaunchPadX*>(this)->build_gui ();
}
static_cast<Gtk::VBox*>(_gui)->show_all();
return _gui;
}
void
LaunchPadX::tear_down_gui ()
{
if (_gui) {
Gtk::Widget *w = static_cast<Gtk::VBox*>(_gui)->get_parent();
if (w) {
w->hide();
delete w;
}
}
delete _gui;
_gui = 0;
}
void
LaunchPadX::build_gui ()
{
_gui = new LPX_GUI (*this);
}
/*--------------------*/
LPX_GUI::LPX_GUI (LaunchPadX& p)
: _lp (p)
, _table (2, 5)
, _action_table (5, 4)
, _ignore_active_change (false)
{
set_border_width (12);
_table.set_row_spacings (4);
_table.set_col_spacings (6);
_table.set_border_width (12);
_table.set_homogeneous (false);
std::string data_file_path;
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std::string name = "launchpad-x.png";
Searchpath spath(ARDOUR::ardour_data_search_path());
spath.add_subdirectory_to_paths ("icons");
find_file (spath, name, data_file_path);
if (!data_file_path.empty()) {
_image.set (data_file_path);
_hpacker.pack_start (_image, false, false);
}
Gtk::Label* l;
int row = 0;
_input_combo.pack_start (_midi_port_columns.short_name);
_output_combo.pack_start (_midi_port_columns.short_name);
_input_combo.signal_changed().connect (sigc::bind (sigc::mem_fun (*this, &LPX_GUI::active_port_changed), &_input_combo, true));
_output_combo.signal_changed().connect (sigc::bind (sigc::mem_fun (*this, &LPX_GUI::active_port_changed), &_output_combo, false));
l = manage (new Gtk::Label);
l->set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Incoming MIDI on:")));
l->set_alignment (1.0, 0.5);
_table.attach (*l, 0, 1, row, row+1, AttachOptions(FILL|EXPAND), AttachOptions(0));
_table.attach (_input_combo, 1, 2, row, row+1, AttachOptions(FILL|EXPAND), AttachOptions(0), 0, 0);
row++;
l = manage (new Gtk::Label);
l->set_markup (string_compose ("<span weight=\"bold\">%1</span>", _("Outgoing MIDI on:")));
l->set_alignment (1.0, 0.5);
_table.attach (*l, 0, 1, row, row+1, AttachOptions(FILL|EXPAND), AttachOptions(0));
_table.attach (_output_combo, 1, 2, row, row+1, AttachOptions(FILL|EXPAND), AttachOptions(0), 0, 0);
row++;
_hpacker.pack_start (_table, true, true);
set_spacing (12);
pack_start (_hpacker, false, false);
/* update the port connection combos */
update_port_combos ();
/* catch future changes to connection state */
ARDOUR::AudioEngine::instance()->PortRegisteredOrUnregistered.connect (_port_connections, invalidator (*this), boost::bind (&LPX_GUI::connection_handler, this), gui_context());
ARDOUR::AudioEngine::instance()->PortPrettyNameChanged.connect (_port_connections, invalidator (*this), boost::bind (&LPX_GUI::connection_handler, this), gui_context());
_lp.ConnectionChange.connect (_port_connections, invalidator (*this), boost::bind (&LPX_GUI::connection_handler, this), gui_context());
}
LPX_GUI::~LPX_GUI ()
{
}
void
LPX_GUI::connection_handler ()
{
/* ignore all changes to combobox active strings here, because we're
updating them to match a new ("external") reality - we were called
because port connections have changed.
*/
PBD::Unwinder<bool> ici (_ignore_active_change, true);
update_port_combos ();
}
void
LPX_GUI::update_port_combos ()
{
std::vector<std::string> midi_inputs;
std::vector<std::string> midi_outputs;
if (!_lp.input_port() || !_lp.output_port()) {
return;
}
ARDOUR::AudioEngine::instance()->get_ports ("", ARDOUR::DataType::MIDI, ARDOUR::PortFlags (ARDOUR::IsOutput|ARDOUR::IsTerminal), midi_inputs);
ARDOUR::AudioEngine::instance()->get_ports ("", ARDOUR::DataType::MIDI, ARDOUR::PortFlags (ARDOUR::IsInput|ARDOUR::IsTerminal), midi_outputs);
Glib::RefPtr<Gtk::ListStore> input = build_midi_port_list (midi_inputs, true);
Glib::RefPtr<Gtk::ListStore> output = build_midi_port_list (midi_outputs, false);
bool input_found = false;
bool output_found = false;
int n;
_input_combo.set_model (input);
_output_combo.set_model (output);
Gtk::TreeModel::Children children = input->children();
Gtk::TreeModel::Children::iterator i;
i = children.begin();
++i; /* skip "Disconnected" */
for (n = 1; i != children.end(); ++i, ++n) {
std::string port_name = (*i)[_midi_port_columns.full_name];
if (_lp.input_port()->connected_to (port_name)) {
_input_combo.set_active (n);
input_found = true;
break;
}
}
if (!input_found) {
_input_combo.set_active (0); /* disconnected */
}
children = output->children();
i = children.begin();
++i; /* skip "Disconnected" */
for (n = 1; i != children.end(); ++i, ++n) {
std::string port_name = (*i)[_midi_port_columns.full_name];
if (_lp.output_port()->connected_to (port_name)) {
_output_combo.set_active (n);
output_found = true;
break;
}
}
if (!output_found) {
_output_combo.set_active (0); /* disconnected */
}
}
Glib::RefPtr<Gtk::ListStore>
LPX_GUI::build_midi_port_list (std::vector<std::string> const & ports, bool for_input)
{
Glib::RefPtr<Gtk::ListStore> store = ListStore::create (_midi_port_columns);
TreeModel::Row row;
row = *store->append ();
row[_midi_port_columns.full_name] = std::string();
row[_midi_port_columns.short_name] = _("Disconnected");
for (std::vector<std::string>::const_iterator p = ports.begin(); p != ports.end(); ++p) {
row = *store->append ();
row[_midi_port_columns.full_name] = *p;
std::string pn = ARDOUR::AudioEngine::instance()->get_pretty_name_by_name (*p);
if (pn.empty ()) {
pn = (*p).substr ((*p).find (':') + 1);
}
row[_midi_port_columns.short_name] = pn;
}
return store;
}
void
LPX_GUI::active_port_changed (Gtk::ComboBox* combo, bool for_input)
{
if (_ignore_active_change) {
return;
}
TreeModel::iterator active = combo->get_active ();
std::string new_port = (*active)[_midi_port_columns.full_name];
if (new_port.empty()) {
if (for_input) {
_lp.input_port()->disconnect_all ();
} else {
_lp.output_port()->disconnect_all ();
}
return;
}
if (for_input) {
if (!_lp.input_port()->connected_to (new_port)) {
_lp.input_port()->disconnect_all ();
_lp.input_port()->connect (new_port);
}
} else {
if (!_lp.output_port()->connected_to (new_port)) {
_lp.output_port()->disconnect_all ();
_lp.output_port()->connect (new_port);
}
}
}