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andark: queue draw to the exact second

master
Corwin Kerr 2024-11-23 14:12:49 -05:00
parent 0669532d18
commit b5fdb79b7f
1 changed files with 36 additions and 21 deletions
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57
apps/andark/app.js
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@ -25,7 +25,6 @@ const zahlpos=(function() {
return z; return z;
})(); })();
let unlock = false;
function zeiger(len,dia,tim){ function zeiger(len,dia,tim){
const x=c.x+ Math.cos(tim)*len/2, const x=c.x+ Math.cos(tim)*len/2,
@ -33,7 +32,6 @@ function zeiger(len,dia,tim){
d={"d":3,"x":dia/2*Math.cos(tim+Math.PI/2),"y":dia/2*Math.sin(tim+Math.PI/2)}, d={"d":3,"x":dia/2*Math.cos(tim+Math.PI/2),"y":dia/2*Math.sin(tim+Math.PI/2)},
pol=[c.x-d.x,c.y-d.y,c.x+d.x,c.y+d.y,x+d.x,y+d.y,x-d.x,y-d.y]; pol=[c.x-d.x,c.y-d.y,c.x+d.x,c.y+d.y,x+d.x,y+d.y,x-d.x,y-d.y];
return pol; return pol;
} }
function drawHands(d) { function drawHands(d) {
@ -86,6 +84,17 @@ function drawNumbers() {
} }
} }
let drawTimeout;
let queueMillis = 1000;
let queueDraw = function() {
if (drawTimeout) clearTimeout(drawTimeout);
drawTimeout = setTimeout(function() {
drawTimeout = undefined;
draw();
}, queueMillis - (Date.now() % queueMillis));
};
function draw(){ function draw(){
// draw black rectangle in the middle to clear screen from scale and hands // draw black rectangle in the middle to clear screen from scale and hands
g.setColor(0,0,0); g.setColor(0,0,0);
@ -100,6 +109,7 @@ function draw(){
} else { } else {
drawText(d); drawHands(d); drawText(d); drawHands(d);
} }
queueDraw();
} }
//draws the scale once the app is startet //draws the scale once the app is startet
@ -128,25 +138,30 @@ if (settings.loadWidgets) {
Bangle.loadWidgets(); Bangle.loadWidgets();
require("widget_utils").swipeOn(); require("widget_utils").swipeOn();
} else if (global.WIDGETS) require("widget_utils").hide(); } else if (global.WIDGETS) require("widget_utils").hide();
// Clear the screen once, at startup
drawScale();
draw();
let secondInterval = setInterval(draw, 1000);
let updateState = function() {
if (Bangle.isLCDOn()) {
if (!Bangle.isLocked()) {
queueMillis = 1000;
unlock = true;
} else {
queueMillis = 60000;
unlock = false;
}
draw();
} else {
if (drawTimeout) clearTimeout(drawTimeout);
drawTimeout = undefined;
}
};
// Stop updates when LCD is off, restart when on // Stop updates when LCD is off, restart when on
Bangle.on('lcdPower',on=>{ Bangle.on('lcdPower', updateState);
if (secondInterval) clearInterval(secondInterval);
secondInterval = undefined; Bangle.on('lock', updateState);
if (on) {
secondInterval = setInterval(draw, 1000); let unlock = true;
draw(); // draw immediately updateState();
} drawScale();
}); draw();
Bangle.on('lock',on=>{
unlock = !on;
if (secondInterval) clearInterval(secondInterval);
secondInterval = setInterval(draw, unlock ? 1000 : 60000);
draw(); // draw immediately
});
Bangle.on('charging',on=>{draw();});