forked from FOSS/BangleApps
125 lines
2.9 KiB
JavaScript
125 lines
2.9 KiB
JavaScript
Bangle.loadWidgets();
|
|
g.clear(true);
|
|
Bangle.drawWidgets();
|
|
|
|
Bangle.setLCDTimeout(undefined);
|
|
|
|
let renderIntervalId;
|
|
let startTime;
|
|
|
|
const locale = require("locale");
|
|
|
|
const DEFAULTS = {
|
|
units: 0,
|
|
};
|
|
|
|
const settings = require("Storage").readJSON("thunder.json", 1) || DEFAULTS;
|
|
|
|
var Layout = require("Layout");
|
|
var layout = new Layout( {
|
|
type:"v", c: [
|
|
{type:"txt", font:"6x8:2", label:"", id:"time", fillx:1},
|
|
{type:"txt", pad:8, font:"20%", label:"", id:"distance", fillx:1},
|
|
{type:"h", c: [
|
|
{type:"btn", font:"6x8:2", label:"Flash", cb: l=>flash() },
|
|
{type:"img", pad:4, src:atob("DhoBH+B/gf4P8D/A/gP4H+B/AfwH8B//////7/+A/APwD4A+APADwA4AcAHABgAYAA==") },
|
|
{type:"btn", font:"6x8:2", label:"Boom", cb: l=>boom() }
|
|
]},
|
|
]
|
|
}, {
|
|
lazy: true,
|
|
back: load,
|
|
});
|
|
|
|
// TODO The code in this function appears in various apps so it might be
|
|
// nice to add something to the time_utils module. (There is already a
|
|
// formatDuration function but that doesn't quite work the same way.)
|
|
const getTime = function(milliseconds) {
|
|
let hrs = Math.floor(milliseconds/3600000);
|
|
let mins = Math.floor(milliseconds/60000)%60;
|
|
let secs = Math.floor(milliseconds/1000)%60;
|
|
let tnth = Math.floor(milliseconds/100)%10;
|
|
let text;
|
|
|
|
if (hrs === 0) {
|
|
text = ("0"+mins).slice(-2) + ":" + ("0"+secs).slice(-2) + "." + tnth;
|
|
} else {
|
|
text = ("0"+hrs) + ":" + ("0"+mins).slice(-2) + ":" + ("0"+secs).slice(-2);
|
|
}
|
|
|
|
return text;
|
|
};
|
|
|
|
// Convert milliseconds to distance based on one km in 2.91 s or
|
|
// one mile in 4.69 s
|
|
// See https://en.wikipedia.org/wiki/Speed_of_sound
|
|
const getDistance = function(milliseconds) {
|
|
let secs = milliseconds/1000;
|
|
let distance;
|
|
|
|
if (settings.units === 1) {
|
|
let kms = Math.round((secs / 2.91) * 10) / 10;
|
|
distance = kms.toFixed(1) + "km";
|
|
} else if (settings.units === 2) {
|
|
let miles = Math.round((secs / 4.69) * 10) / 10;
|
|
distance = miles.toFixed(1) + "mi";
|
|
} else {
|
|
let meters = (secs / 2.91) * 1000;
|
|
distance = locale.distance(meters);
|
|
}
|
|
|
|
return distance;
|
|
};
|
|
|
|
const renderIntervalCallback = function() {
|
|
if (startTime === undefined) {
|
|
return;
|
|
}
|
|
|
|
updateTimeAndDistance();
|
|
};
|
|
|
|
const flashAndBoom = function() {
|
|
Bangle.buzz(50, 0.5);
|
|
|
|
if (renderIntervalId !== undefined) {
|
|
clearInterval(renderIntervalId);
|
|
renderIntervalId = undefined;
|
|
}
|
|
};
|
|
|
|
const flash = function() {
|
|
flashAndBoom();
|
|
|
|
startTime = undefined;
|
|
updateTimeAndDistance();
|
|
|
|
startTime = Date.now();
|
|
renderIntervalId = setInterval(renderIntervalCallback, 100);
|
|
};
|
|
|
|
const boom = function() {
|
|
flashAndBoom();
|
|
|
|
updateTimeAndDistance();
|
|
startTime = undefined;
|
|
};
|
|
|
|
const updateTimeAndDistance = function() {
|
|
let t;
|
|
|
|
if (startTime === undefined) {
|
|
t = 0;
|
|
} else {
|
|
t = Date.now() - startTime;
|
|
}
|
|
|
|
layout.time.label = getTime(t);
|
|
layout.distance.label = getDistance(t);
|
|
|
|
layout.render();
|
|
// layout.debug();
|
|
};
|
|
|
|
updateTimeAndDistance();
|