portapack-mayhem/firmware/application/ui_channel.cpp
2015-07-08 08:39:24 -07:00

80 lines
2.0 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 <algorithm>
namespace ui {
void Channel::on_show() {
context().message_map[Message::ID::ChannelStatistics] = [this](const Message* const p) {
this->on_statistics_update(static_cast<const ChannelStatisticsMessage*>(p)->statistics);
};
}
void Channel::on_hide() {
context().message_map[Message::ID::ChannelStatistics] = nullptr;
}
void Channel::paint(Painter& painter) {
const auto r = screen_rect();
const int32_t db_min = -r.width();
const int32_t x_0 = 0;
const int32_t x_max = std::max(x_0, max_db_ - db_min);
const int32_t x_lim = r.width();
const Rect r0 {
static_cast<ui::Coord>(r.left() + x_0), r.top(),
static_cast<ui::Dim>(x_max - x_0), r.height()
};
painter.fill_rectangle(
r0,
Color::blue()
);
const Rect r1 {
static_cast<ui::Coord>(r.left() + x_max), r.top(),
1, r.height()
};
painter.fill_rectangle(
r1,
Color::white()
);
const Rect r2 {
static_cast<ui::Coord>(r.left() + x_max + 1), r.top(),
static_cast<ui::Dim>(x_lim - (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 */