mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-12-27 16:29:46 -05:00
93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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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, or (at your option)
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* 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
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "ui_audio.hpp"
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#include <algorithm>
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namespace ui {
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void Audio::on_show() {
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context().message_map().register_handler(Message::ID::AudioStatistics,
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[this](const Message* const p) {
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this->on_statistics_update(static_cast<const AudioStatisticsMessage*>(p)->statistics);
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}
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);
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}
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void Audio::on_hide() {
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context().message_map().unregister_handler(Message::ID::AudioStatistics);
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}
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void Audio::paint(Painter& painter) {
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const auto r = screen_rect();
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const int32_t db_min = -r.width();
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const int32_t x_0 = 0;
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const int32_t x_rms = std::max(x_0, rms_db_ - db_min);
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const int32_t x_max = std::max(x_rms + 1, max_db_ - db_min);
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const int32_t x_lim = r.width();
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const Rect r0 {
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static_cast<ui::Coord>(r.left() + x_0), r.top(),
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static_cast<ui::Dim>(x_rms - x_0), r.height()
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};
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painter.fill_rectangle(
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r0,
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Color::green()
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);
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const Rect r1 {
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static_cast<ui::Coord>(r.left() + x_rms), r.top(),
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1, r.height()
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};
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painter.fill_rectangle(
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r1,
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Color::black()
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);
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const Rect r2 {
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static_cast<ui::Coord>(r.left() + x_rms + 1), r.top(),
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static_cast<ui::Dim>(x_max - (x_rms + 1)), r.height()
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};
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painter.fill_rectangle(
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r2,
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Color::red()
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);
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const Rect r3 {
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static_cast<ui::Coord>(r.left() + x_max), r.top(),
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static_cast<ui::Dim>(x_lim - x_max), r.height()
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};
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painter.fill_rectangle(
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r3,
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Color::black()
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);
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}
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void Audio::on_statistics_update(const AudioStatistics& statistics) {
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rms_db_ = statistics.rms_db;
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max_db_ = statistics.max_db;
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set_dirty();
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}
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} /* namespace ui */
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