Files
timely-reference/firmware/Application/Screens/AnalogTimeScreen.cpp

192 lines
6.6 KiB
C++

/*
* Copyright (C) 2019 Max Regan
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <algorithm>
#include <cmath>
#include "Application/Screens/AnalogTimeScreen.h"
#include "Application/SystemFonts.h"
#include "Bsp/Drivers/RtcDriver.h"
#include "Bsp/SystemTime.h"
#include "Bsp/Drivers/LowPower.h"
using BSP::ReturnCode;
using BSP::Time;
using BSP::Schedule::NextTime;
using Color = BSP::DisplayDriver::Color;
// TODO: remove all calls to std::cos and std::sin?
AnalogTimeScreen::AnalogTimeScreen(BSP::DisplayDriver &driver,
ScreenManager &manager,
Screen &menu_screen)
: m_driver(driver)
, m_last_time()
, m_manager(manager)
, m_menu_screen(menu_screen)
, m_display_seconds(true)
{}
ReturnCode AnalogTimeScreen::init()
{
return ReturnCode::OK;
}
void AnalogTimeScreen::draw_ticks() {
// After profiling, using lookup tables is 6-10% faster than using std::sin & std::cos.
static constexpr float sin_tbl[8] = {
0.0,
0.10452539173303049,
0.20790564888802265,
0.30900818248165035,
0.4067253572759511,
0.4999866265466325,
0.5877702605258084,
0.6691145400274635,
};
static constexpr float cos_tbl[8] = {
1.0,
0.9945222181947755,
0.9781488849661131,
0.9510593794077146,
0.9135504823209005,
0.8660331248136633,
0.8090278863187741,
0.7431592913526923,
};
const uint32_t y_center = m_driver.get_height() / 2;
const uint32_t x_center = m_driver.get_width() / 2;
const uint32_t radius = std::min(m_driver.get_width(), m_driver.get_height()) / 2;
// This only works for square screens, but saves a a bunch of float math and calls to trig functions
for (int i = 0; i < 8; i++) {
const uint32_t len = (i % 5 == 0) ? 10 : 5;
const uint32_t width = (i % 5 == 0) ? 3 : 1;
const uint32_t end1_offset = sin_tbl[i] * radius;
const uint32_t end2_offset = cos_tbl[i] * radius;
const uint32_t start1_offset = sin_tbl[i] * (radius - len);
const uint32_t start2_offset = cos_tbl[i] * (radius - len);
m_driver.draw_line(x_center + start1_offset, y_center + start2_offset,
x_center + end1_offset, y_center + end2_offset,
Color::BLACK, width);
m_driver.draw_line(x_center - start1_offset, y_center + start2_offset,
x_center - end1_offset, y_center + end2_offset,
Color::BLACK, width);
m_driver.draw_line(x_center + start1_offset, y_center - start2_offset,
x_center + end1_offset, y_center - end2_offset,
Color::BLACK, width);
m_driver.draw_line(x_center - start1_offset, y_center - start2_offset,
x_center - end1_offset, y_center - end2_offset,
Color::BLACK, width);
m_driver.draw_line(x_center + start2_offset, y_center + start1_offset,
x_center + end2_offset, y_center + end1_offset,
Color::BLACK, width);
m_driver.draw_line(x_center - start2_offset, y_center + start1_offset,
x_center - end2_offset, y_center + end1_offset,
Color::BLACK, width);
m_driver.draw_line(x_center + start2_offset, y_center - start1_offset,
x_center + end2_offset, y_center - end1_offset,
Color::BLACK, width);
m_driver.draw_line(x_center - start2_offset, y_center - start1_offset,
x_center - end2_offset, y_center - end1_offset,
Color::BLACK, width);
}
}
void AnalogTimeScreen::draw_hand(uint32_t ticks, uint32_t len, int32_t width, Color color) {
const uint32_t y_center = m_driver.get_height() / 2;
const uint32_t x_center = m_driver.get_width() / 2;
uint32_t x_end = x_center + std::sin(ticks * TURNS_PER_TICK) * len;
uint32_t y_end = y_center - std::cos(ticks * TURNS_PER_TICK) * len;
m_driver.draw_line(x_center, y_center, x_end, y_end, color, width);
}
void AnalogTimeScreen::display_time()
{
BSP::WallClockTime time;
BSP::RtcDriver::get_time(time);
m_driver.clear(Color::WHITE);
draw_ticks();
const uint32_t seconds_len = std::min(m_driver.get_width(), m_driver.get_height()) * 9 / 20;
const uint32_t minutes_len = std::min(m_driver.get_width(), m_driver.get_height()) * 17 / 40;
const uint32_t hours_len = std::min(m_driver.get_width(), m_driver.get_height()) * 6 / 20;
draw_hand(time.get_hours_12() * 5, hours_len, 3, Color::BLACK);
draw_hand(time.get_minutes(), minutes_len, 3, Color::BLACK);
if (m_display_seconds) {
draw_hand(time.get_seconds(), seconds_len, 2, Color::RED);
}
m_last_time = time;
m_driver.refresh();
}
NextTime AnalogTimeScreen::execute()
{
display_time();
BSP::time_t now;
BSP::SystemTimer::get_time(now);
if (m_display_seconds) {
return NextTime::in(Time::seconds(1));
} else {
BSP::WallClockTime wall_time;
BSP::RtcDriver::get_time(wall_time);
return NextTime::in(Time::seconds(61 - wall_time.get_seconds()));
}
}
void AnalogTimeScreen::enable() {
m_last_time = {};
display_time();
}
void AnalogTimeScreen::disable() {
}
void AnalogTimeScreen::notify_up_button() {
/* TODO: This should open a menu first */
m_manager.push_screen(m_menu_screen);
}
void AnalogTimeScreen::notify_middle_button() {
}
void AnalogTimeScreen::notify_down_button() {
}