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Piano: Add Play/Pause, Forward and Back buttons

Piano now has a toolbar allowing the playback to be paused,
or to be stepped forward or back a note.
This commit is contained in:
JJ Roberts-White 2021-07-11 12:58:17 +10:00 committed by Ali Mohammad Pur
parent 54c005754a
commit 74f1f2b5e2
10 changed files with 234 additions and 69 deletions

View file

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/*
* Copyright (c) 2021, JJ Roberts-White <computerfido@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include "PlayerWidget.h"
#include "AudioPlayerLoop.h"
#include "Music.h"
#include "TrackManager.h"
#include <LibGUI/BoxLayout.h>
#include <LibGUI/Button.h>
PlayerWidget::PlayerWidget(TrackManager& manager, AudioPlayerLoop& loop)
: m_track_manager(manager)
, m_audio_loop(loop)
{
set_layout<GUI::HorizontalBoxLayout>();
set_fill_with_background_color(true);
m_play_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/play.png");
m_pause_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/pause.png");
m_back_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/go-back.png"); // Go back a note
m_next_icon = Gfx::Bitmap::load_from_file("/res/icons/16x16/go-forward.png"); // Advance a note
m_play_button = add<GUI::Button>();
m_play_button->set_icon(*m_pause_icon);
m_play_button->set_fixed_width(30);
m_play_button->set_tooltip("Play/Pause playback");
m_play_button->set_focus_policy(GUI::FocusPolicy::NoFocus);
m_play_button->on_click = [this](unsigned) {
m_audio_loop.toggle_paused();
if (m_audio_loop.is_playing()) {
m_play_button->set_icon(*m_pause_icon);
} else {
m_play_button->set_icon(*m_play_icon);
}
};
m_back_button = add<GUI::Button>();
m_back_button->set_icon(*m_back_icon);
m_back_button->set_fixed_width(30);
m_back_button->set_tooltip("Previous Note");
m_back_button->set_focus_policy(GUI::FocusPolicy::NoFocus);
m_back_button->on_click = [this](unsigned) {
m_track_manager.time_forward(-(sample_rate / (beats_per_minute / 60) / notes_per_beat));
};
m_next_button = add<GUI::Button>();
m_next_button->set_icon(*m_next_icon);
m_next_button->set_fixed_width(30);
m_next_button->set_tooltip("Next Note");
m_next_button->set_focus_policy(GUI::FocusPolicy::NoFocus);
m_next_button->on_click = [this](unsigned) {
m_track_manager.time_forward((sample_rate / (beats_per_minute / 60) / notes_per_beat));
};
}
PlayerWidget::~PlayerWidget()
{
}