mirror of
https://github.com/eried/portapack-mayhem.git
synced 2024-10-01 01:26:06 -04:00
87 lines
2.2 KiB
C++
87 lines
2.2 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_channel.hpp"
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#include "event_m0.hpp"
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#include "utility.hpp"
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#include <algorithm>
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namespace ui {
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void Channel::on_show() {
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EventDispatcher::message_map().register_handler(Message::ID::ChannelStatistics,
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[this](const Message* const p) {
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this->on_statistics_update(static_cast<const ChannelStatisticsMessage*>(p)->statistics);
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}
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);
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}
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void Channel::on_hide() {
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EventDispatcher::message_map().unregister_handler(Message::ID::ChannelStatistics);
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}
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void Channel::paint(Painter& painter) {
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const auto r = screen_rect();
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constexpr int db_min = -96;
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constexpr int db_max = 0;
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constexpr int db_delta = db_max - db_min;
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const range_t<int> x_max_range { 0, r.width() - 1 };
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const auto x_max = x_max_range.clip((max_db_ - db_min) * r.width() / db_delta);
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const Rect r0 {
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static_cast<ui::Coord>(r.left()), r.top(),
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static_cast<ui::Dim>(x_max), r.height()
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};
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painter.fill_rectangle(
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r0,
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Color::blue()
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);
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const Rect r1 {
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static_cast<ui::Coord>(r.left() + x_max), 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::white()
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);
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const Rect r2 {
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static_cast<ui::Coord>(r.left() + x_max + 1), r.top(),
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static_cast<ui::Dim>(r.width() - (x_max + 1)), r.height()
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};
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painter.fill_rectangle(
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r2,
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Color::black()
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);
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}
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void Channel::on_statistics_update(const ChannelStatistics& statistics) {
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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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