HackRF-Treasure-Chest/Software/portapack-mayhem/firmware/application/ui/ui_channel.cpp
2022-09-22 09:26:57 -07:00

64 lines
1.7 KiB
C++

/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
*
* This file is part of PortaPack.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "ui_channel.hpp"
#include "utility.hpp"
#include <algorithm>
namespace ui {
void Channel::paint(Painter& painter) {
const auto r = screen_rect();
constexpr int db_min = -96;
constexpr int db_max = 0;
constexpr int db_delta = db_max - db_min;
const range_t<int> x_max_range { 0, r.width() - 1 };
const auto x_max = x_max_range.clip((max_db_ - db_min) * r.width() / db_delta);
const Rect r0 { r.left(), r.top(), x_max, r.height() };
painter.fill_rectangle(
r0,
Color::blue()
);
const Rect r1 { r.left() + x_max, r.top(), 1, r.height() };
painter.fill_rectangle(
r1,
Color::white()
);
const Rect r2 { r.left() + x_max + 1, r.top(), r.width() - (x_max + 1), r.height() };
painter.fill_rectangle(
r2,
Color::black()
);
}
void Channel::on_statistics_update(const ChannelStatistics& statistics) {
max_db_ = statistics.max_db;
set_dirty();
}
} /* namespace ui */