142 lines
3.4 KiB
C++
142 lines
3.4 KiB
C++
/*
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* Copyright (C) 2014 Paul Davis <paul@linuxaudiosystems.com>
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* Copyright (C) 2017 Robin Gareus <robin@gareus.org>
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*
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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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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <iostream>
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#include <cmath>
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#include <algorithm>
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#include <pangomm/layout.h>
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#include "pbd/compose.h"
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#include "pbd/controllable.h"
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#include "pbd/error.h"
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#include "gtkmm2ext/utils.h"
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#include "gtkmm2ext/rgb_macros.h"
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#include "gtkmm2ext/gui_thread.h"
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#include "gtkmm2ext/keyboard.h"
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#include "widgets/ardour_display.h"
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#include "pbd/i18n.h"
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using namespace Gtkmm2ext;
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using namespace Gdk;
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using namespace Gtk;
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using namespace Glib;
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using namespace PBD;
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using namespace ArdourWidgets;
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using std::max;
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using std::min;
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using namespace std;
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ArdourDisplay::ArdourDisplay (Element e)
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{
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add_elements(ArdourButton::Text);
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}
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ArdourDisplay::~ArdourDisplay ()
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{
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}
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bool
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ArdourDisplay::on_scroll_event (GdkEventScroll* ev)
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{
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/* mouse wheel */
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float scale = 1.0;
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if (ev->state & Keyboard::GainFineScaleModifier) {
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if (ev->state & Keyboard::GainExtraFineScaleModifier) {
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scale *= 0.01;
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} else {
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scale *= 0.10;
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}
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}
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std::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable();
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if (c) {
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float val = c->get_interface();
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if ( ev->direction == GDK_SCROLL_UP )
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val += 0.05 * scale; //by default, we step in 1/20ths of the knob travel
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else
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val -= 0.05 * scale;
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c->set_interface(val);
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}
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return true;
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}
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void
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ArdourDisplay::add_controllable_preset (const char *txt, float val)
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{
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using namespace Menu_Helpers;
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AddMenuElem(MenuElem (txt, sigc::bind (sigc::mem_fun(*this, &ArdourDisplay::handle_controllable_preset), val)));
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}
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static inline float dB_to_coefficient (float dB) {
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return dB > -318.8f ? pow (10.0f, dB * 0.05f) : 0.0f;
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}
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void
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ArdourDisplay::handle_controllable_preset (float p)
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{
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std::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable();
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if (!c) return;
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/* This should not use dB_to_coefficient(), but the Controllable's value.
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*
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* The only user of this API is currently monitor_section.cc which conveniently
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* binds dB values. Once there are other use-cases, for this, this (GUI only) API
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* needs fixing.
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*/
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c->set_value(dB_to_coefficient (p), Controllable::NoGroup);
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}
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void
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ArdourDisplay::set_controllable (std::shared_ptr<Controllable> c)
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{
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watch_connection.disconnect (); //stop watching the old controllable
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if (!c) return;
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binding_proxy.set_controllable (c);
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c->Changed.connect (watch_connection, invalidator(*this), boost::bind (&ArdourDisplay::controllable_changed, this), gui_context());
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controllable_changed();
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}
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void
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ArdourDisplay::controllable_changed ()
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{
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std::shared_ptr<PBD::Controllable> c = binding_proxy.get_controllable();
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if (!c) return;
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set_text(c->get_user_string());
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set_dirty();
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}
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