Robin Gareus
0e79253412
Leave the user in control while the slider is being dragged. Previously there was a feedback loop: User-drags slider -> value changes -> value is rounded -> slider is updated with rounded value (while the user still drags)
355 lines
11 KiB
C++
355 lines
11 KiB
C++
/*
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Copyright (C) 2007 Paul Davis
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Author: David Robillard
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <iomanip>
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#include <cmath>
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#include "pbd/compose.h"
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#include "pbd/error.h"
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#include "ardour/automatable.h"
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#include "ardour/automation_control.h"
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#include "ardour/session.h"
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#include "ardour/tempo.h"
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#include "widgets/ardour_button.h"
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#include "widgets/ardour_knob.h"
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#include "automation_controller.h"
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#include "gui_thread.h"
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#include "note_select_dialog.h"
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#include "timers.h"
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#include "pbd/i18n.h"
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using namespace ARDOUR;
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using namespace Gtk;
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using namespace ArdourWidgets;
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using PBD::Controllable;
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AutomationBarController::AutomationBarController (
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boost::shared_ptr<AutomationControl> ac,
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Adjustment* adj)
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: ArdourWidgets::BarController (*adj, ac)
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, _controllable (ac)
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{
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}
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std::string
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AutomationBarController::get_label (double& xpos)
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{
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xpos = 0.5;
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return _controllable->get_user_string();
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}
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AutomationBarController::~AutomationBarController()
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{
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}
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AutomationController::AutomationController(boost::shared_ptr<AutomationControl> ac,
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Adjustment* adj,
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bool use_knob)
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: _widget(NULL)
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, _controllable(ac)
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, _adjustment(adj)
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, _ignore_change(false)
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, _grabbed(false)
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{
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if (ac->toggled()) {
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ArdourButton* but = manage(new ArdourButton());
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// Apply styles for special types
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if (ac->parameter().type() == MuteAutomation) {
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but->set_name("mute button");
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} else if (ac->parameter().type() == SoloAutomation) {
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but->set_name("solo button");
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} else {
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but->set_name("generic button");
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}
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but->set_fallthrough_to_parent(true);
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but->set_controllable(ac);
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but->signal_button_press_event().connect(
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sigc::mem_fun(*this, &AutomationController::button_press));
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but->signal_button_release_event().connect(
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sigc::mem_fun(*this, &AutomationController::button_release));
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const bool active = _adjustment->get_value() >= 0.5;
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if (but->get_active() != active) {
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but->set_active(active);
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}
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_widget = but;
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} else if (use_knob) {
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ArdourKnob* knob = manage (new ArdourKnob (ArdourKnob::default_elements, ArdourKnob::Detent));
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knob->set_controllable (ac);
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knob->set_name("processor control knob");
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_widget = knob;
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knob->StartGesture.connect(sigc::mem_fun(*this, &AutomationController::start_touch));
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knob->StopGesture.connect(sigc::mem_fun(*this, &AutomationController::end_touch));
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} else {
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AutomationBarController* bar = manage(new AutomationBarController(ac, adj));
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bar->set_name(X_("ProcessorControlSlider"));
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bar->StartGesture.connect(
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sigc::mem_fun(*this, &AutomationController::start_touch));
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bar->StopGesture.connect(
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sigc::mem_fun(*this, &AutomationController::end_touch));
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bar->signal_button_release_event().connect(
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sigc::mem_fun(*this, &AutomationController::on_button_release));
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_widget = bar;
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}
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_adjustment->signal_value_changed().connect(
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sigc::mem_fun(*this, &AutomationController::value_adjusted));
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ac->Changed.connect (_changed_connections, invalidator (*this), boost::bind (&AutomationController::display_effective_value, this), gui_context());
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display_effective_value ();
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if (ac->alist ()) {
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ac->alist()->automation_state_changed.connect (_changed_connections, invalidator (*this), boost::bind (&AutomationController::automation_state_changed, this), gui_context());
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automation_state_changed ();
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}
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add(*_widget);
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show_all();
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}
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AutomationController::~AutomationController()
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{
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}
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boost::shared_ptr<AutomationController>
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AutomationController::create(const Evoral::Parameter& param,
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const ParameterDescriptor& desc,
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boost::shared_ptr<AutomationControl> ac,
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bool use_knob)
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{
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const double lo = ac->internal_to_interface(desc.lower);
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const double up = ac->internal_to_interface(desc.upper);
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const double normal = ac->internal_to_interface(desc.normal);
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const double smallstep = ac->internal_to_interface(desc.lower + desc.smallstep) - lo;
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const double largestep = ac->internal_to_interface(desc.lower + desc.largestep) - lo;
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Gtk::Adjustment* adjustment = manage (
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new Gtk::Adjustment (normal, lo, up, smallstep, largestep));
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assert (ac);
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assert(ac->parameter() == param);
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return boost::shared_ptr<AutomationController>(new AutomationController(ac, adjustment, use_knob));
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}
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void
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AutomationController::automation_state_changed ()
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{
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bool x = _controllable->alist()->automation_state() & Play;
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_widget->set_sensitive (!x);
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}
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void
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AutomationController::display_effective_value ()
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{
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double const interface_value = _controllable->internal_to_interface(_controllable->get_value());
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if (_grabbed) {
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/* we cannot use _controllable->touching() here
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* because that's only set in Write or Touch mode.
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* Besides ctrl-surfaces may also set touching()
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*/
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return;
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}
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if (_adjustment->get_value () != interface_value) {
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_ignore_change = true;
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_adjustment->set_value (interface_value);
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_ignore_change = false;
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}
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}
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void
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AutomationController::value_adjusted ()
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{
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if (!_ignore_change) {
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const double new_val = _controllable->interface_to_internal(_adjustment->get_value());
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if (_controllable->user_double() != new_val) {
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_controllable->set_value (new_val, Controllable::NoGroup);
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}
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}
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/* A bar controller will automatically follow the adjustment, but for a
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button we have to do it manually. */
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ArdourButton* but = dynamic_cast<ArdourButton*>(_widget);
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if (but) {
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const bool active = _adjustment->get_value() >= 0.5;
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if (but->get_active() != active) {
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but->set_active(active);
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}
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}
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}
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void
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AutomationController::start_touch()
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{
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_grabbed = true;
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_controllable->start_touch (_controllable->session().transport_sample());
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}
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void
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AutomationController::end_touch ()
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{
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_controllable->stop_touch (_controllable->session().transport_sample());
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if (_grabbed) {
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_grabbed = false;
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display_effective_value ();
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}
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}
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bool
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AutomationController::button_press (GdkEventButton*)
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{
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ArdourButton* but = dynamic_cast<ArdourButton*>(_widget);
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if (but) {
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start_touch ();
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_controllable->set_value (but->get_active () ? 0.0 : 1.0, Controllable::UseGroup);
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}
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return false;
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}
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bool
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AutomationController::button_release (GdkEventButton*)
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{
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end_touch ();
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return true;
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}
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static double
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midi_note_to_hz(int note)
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{
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const double tuning = 440.0;
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return tuning * pow(2, (note - 69.0) / 12.0);
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}
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static double
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clamp(double val, double min, double max)
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{
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if (val < min) {
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return min;
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} else if (val > max) {
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return max;
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}
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return val;
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}
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void
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AutomationController::run_note_select_dialog()
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{
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const ARDOUR::ParameterDescriptor& desc = _controllable->desc();
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NoteSelectDialog* dialog = new NoteSelectDialog();
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if (dialog->run() == Gtk::RESPONSE_ACCEPT) {
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const double value = ((_controllable->desc().unit == ARDOUR::ParameterDescriptor::HZ)
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? midi_note_to_hz(dialog->note_number())
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: dialog->note_number());
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_controllable->set_value(clamp(value, desc.lower, desc.upper), Controllable::NoGroup);
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}
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delete dialog;
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}
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void
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AutomationController::set_freq_beats(double beats)
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{
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const ARDOUR::ParameterDescriptor& desc = _controllable->desc();
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const ARDOUR::Session& session = _controllable->session();
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const samplepos_t pos = session.transport_sample();
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const ARDOUR::Tempo& tempo = session.tempo_map().tempo_at_sample (pos);
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const double bpm = tempo.note_types_per_minute();
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const double bps = bpm / 60.0;
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const double freq = bps / beats;
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_controllable->set_value(clamp(freq, desc.lower, desc.upper), Controllable::NoGroup);
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}
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void
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AutomationController::set_ratio(double ratio)
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{
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const ARDOUR::ParameterDescriptor& desc = _controllable->desc();
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const double value = _controllable->get_value() * ratio;
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_controllable->set_value(clamp(value, desc.lower, desc.upper), Controllable::NoGroup);
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}
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bool
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AutomationController::on_button_release(GdkEventButton* ev)
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{
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using namespace Gtk::Menu_Helpers;
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if (ev->button != 3) {
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return false;
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}
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const ARDOUR::ParameterDescriptor& desc = _controllable->desc();
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if (desc.unit == ARDOUR::ParameterDescriptor::MIDI_NOTE) {
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Gtk::Menu* menu = manage(new Menu());
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MenuList& items = menu->items();
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items.push_back(MenuElem(_("Select Note..."),
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sigc::mem_fun(*this, &AutomationController::run_note_select_dialog)));
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menu->popup(1, ev->time);
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return true;
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} else if (desc.unit == ARDOUR::ParameterDescriptor::HZ) {
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Gtk::Menu* menu = manage(new Menu());
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MenuList& items = menu->items();
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items.push_back(MenuElem(_("Halve"),
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sigc::bind(sigc::mem_fun(*this, &AutomationController::set_ratio),
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0.5)));
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items.push_back(MenuElem(_("Double"),
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sigc::bind(sigc::mem_fun(*this, &AutomationController::set_ratio),
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2.0)));
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const bool is_audible = desc.upper > 40.0;
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const bool is_low = desc.lower < 1.0;
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if (is_audible) {
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items.push_back(MenuElem(_("Select Note..."),
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sigc::mem_fun(*this, &AutomationController::run_note_select_dialog)));
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}
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if (is_low) {
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for (int beats = 1; beats <= 16; ++beats) {
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items.push_back(MenuElem (string_compose(P_("Set to %1 beat", "Set to %1 beats", beats), beats),
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sigc::bind(sigc::mem_fun(*this, &AutomationController::set_freq_beats),
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(double)beats)));
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}
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}
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menu->popup(1, ev->time);
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return true;
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}
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return false;
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}
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/** Stop updating our value from our controllable */
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void
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AutomationController::stop_updating ()
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{
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_screen_update_connection.disconnect ();
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}
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void
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AutomationController::disable_vertical_scroll ()
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{
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AutomationBarController* bar = dynamic_cast<AutomationBarController*>(_widget);
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if (bar) {
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bar->set_tweaks (
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ArdourWidgets::ArdourFader::Tweaks(bar->tweaks() | ArdourWidgets::ArdourFader::NoVerticalScroll));
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}
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}
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