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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "MainWidget.h"
#include "KeysWidget.h"
#include "KnobsWidget.h"
#include "PlayerWidget.h"
#include "RollWidget.h"
#include "SamplerWidget.h"
#include "TrackManager.h"
#include "WaveWidget.h"
#include <LibGUI/Action.h>
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Menu.h>
#include <LibGUI/TabWidget.h>
MainWidget::MainWidget(TrackManager& track_manager, AudioPlayerLoop& loop)
: m_track_manager(track_manager)
, m_audio_loop(loop)
{
set_layout<GUI::VerticalBoxLayout>();
layout()->set_spacing(2);
layout()->set_margins(2);
set_fill_with_background_color(true);
m_wave_widget = add<WaveWidget>(track_manager);
m_wave_widget->set_fixed_height(100);
m_tab_widget = add<GUI::TabWidget>();
m_roll_widget = m_tab_widget->add_tab<RollWidget>("Piano Roll", track_manager);
m_roll_widget->set_fixed_height(300);
m_tab_widget->add_tab<SamplerWidget>("Sampler", track_manager);
m_player_widget = add<PlayerWidget>(track_manager, loop);
m_keys_and_knobs_container = add<GUI::Widget>();
m_keys_and_knobs_container->set_layout<GUI::HorizontalBoxLayout>();
m_keys_and_knobs_container->layout()->set_spacing(2);
m_keys_and_knobs_container->set_fixed_height(130);
m_keys_and_knobs_container->set_fill_with_background_color(true);
m_keys_widget = m_keys_and_knobs_container->add<KeysWidget>(track_manager.keyboard());
m_knobs_widget = m_keys_and_knobs_container->add<KnobsWidget>(track_manager, *this);
m_roll_widget->set_keys_widget(m_keys_widget);
}
void MainWidget::add_track_actions(GUI::Menu& menu)
{
menu.add_action(GUI::Action::create("&Add Track", { Mod_Ctrl, Key_T }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/plus.png").release_value_but_fixme_should_propagate_errors(), [&](auto&) {
m_player_widget->add_track();
}));
menu.add_action(GUI::Action::create("&Next Track", { Mod_Ctrl, Key_N }, Gfx::Bitmap::try_load_from_file("/res/icons/16x16/go-last.png").release_value_but_fixme_should_propagate_errors(), [&](auto&) {
turn_off_pressed_keys();
m_player_widget->next_track();
turn_on_pressed_keys();
m_knobs_widget->update_knobs();
}));
}
// FIXME: There are some unnecessary calls to update() throughout this program,
// which are an easy target for optimization.
void MainWidget::custom_event(Core::CustomEvent&)
{
m_wave_widget->update();
m_roll_widget->update();
}
void MainWidget::keydown_event(GUI::KeyEvent& event)
{
// This is to stop held-down keys from creating multiple events.
if (m_keys_pressed[event.key()])
return;
else
m_keys_pressed[event.key()] = true;
note_key_action(event.key(), LibDSP::Keyboard::Switch::On);
special_key_action(event.key());
m_keys_widget->update();
}
void MainWidget::keyup_event(GUI::KeyEvent& event)
{
m_keys_pressed[event.key()] = false;
note_key_action(event.key(), LibDSP::Keyboard::Switch::Off);
m_keys_widget->update();
}
void MainWidget::note_key_action(int key_code, LibDSP::Keyboard::Switch switch_note)
{
auto key = m_keys_widget->key_code_to_key(key_code);
if (key == -1)
return;
m_track_manager.keyboard()->set_keyboard_note_in_active_octave(key, switch_note);
}
void MainWidget::special_key_action(int key_code)
{
switch (key_code) {
case Key_Z:
set_octave_and_ensure_note_change(LibDSP::Keyboard::Direction::Down);
break;
case Key_X:
set_octave_and_ensure_note_change(LibDSP::Keyboard::Direction::Up);
break;
case Key_C:
m_knobs_widget->cycle_waveform();
break;
case Key_Space:
m_player_widget->toggle_paused();
break;
}
}
void MainWidget::turn_off_pressed_keys()
{
if (m_keys_widget->mouse_note() != -1)
m_track_manager.keyboard()->set_keyboard_note_in_active_octave(m_keys_widget->mouse_note(), LibDSP::Keyboard::Switch::Off);
for (int i = 0; i < key_code_count; ++i) {
if (m_keys_pressed[i])
note_key_action(i, LibDSP::Keyboard::Switch::Off);
}
}
void MainWidget::turn_on_pressed_keys()
{
if (m_keys_widget->mouse_note() != -1)
m_track_manager.keyboard()->set_keyboard_note_in_active_octave(m_keys_widget->mouse_note(), LibDSP::Keyboard::Switch::On);
for (int i = 0; i < key_code_count; ++i) {
if (m_keys_pressed[i])
note_key_action(i, LibDSP::Keyboard::Switch::On);
}
}
void MainWidget::set_octave_and_ensure_note_change(int octave)
{
turn_off_pressed_keys();
MUST(m_track_manager.keyboard()->set_virtual_keyboard_octave(octave));
turn_on_pressed_keys();
m_knobs_widget->update_knobs();
m_keys_widget->update();
}
void MainWidget::set_octave_and_ensure_note_change(LibDSP::Keyboard::Direction direction)
{
turn_off_pressed_keys();
m_track_manager.keyboard()->change_virtual_keyboard_octave(direction);
turn_on_pressed_keys();
m_knobs_widget->update_knobs();
m_keys_widget->update();
}
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