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/*
Draws a fullscreen image from flash memory
Saves a small image to flash which is just the area where the clock is
Keeps an offscreen buffer and draws the time to that
*/
var is12Hour = (require("Storage").readJSON("setting.json",1)||{})["12hour"];
var inf = require("Storage").readJSON("imgclock.face.json");
var img = require("Storage").read("imgclock.face.img");
var IX = inf.x, IY = inf.y, IBPP = inf.bpp;
var IW = 174, IH = 45, OY = 24;
var bgwidth = img.charCodeAt(0);
var bgoptions;
if (bgwidth<g.getWidth())
bgoptions = { scale : g.getWidth()/bgwidth };
require("Font7x11Numeric7Seg").add(Graphics);
var cg = Graphics.createArrayBuffer(IW,IH,IBPP,{msb:true});
var cgimg = {width:IW,height:IH,bpp:IBPP,buffer:cg.buffer};
var locale = require("locale");
// store clock background image in bgimg (a file in flash memory)
var bgimg = require("Storage").read("imgclock.face.bg");
// if it doesn't exist, make it
function createBgImg() {
cg.drawImage(img,-IX,-IY,bgoptions);
require("Storage").write("imgclock.face.bg", cg.buffer);
bgimg = require("Storage").read("imgclock.face.bg");
}
if (!bgimg || bgimg.length<10) createBgImg();
function draw() {
var t = new Date();
var hours = t.getHours();
var meridian = "";
if (is12Hour) {
meridian = (hours < 12) ? "AM" : "PM";
hours = ((hours + 11) % 12) + 1;
}
// quickly set background image
new Uint8Array(cg.buffer).set(bgimg);
// draw time
cg.setColor(inf.col);
var x = 74 + 32 * inf.align;
cg.setFont("7x11Numeric7Seg",3);
cg.setFontAlign(1,-1);
cg.drawString(hours, x, 0);
x+=2;
if (t.getSeconds() & 1)
cg.fillRect(x, 10, x+2, 10+2).fillRect(x, 20, x+2, 20+2);
x+=6;
cg.setFontAlign(-1,-1);
cg.drawString(("0"+t.getMinutes()).substr(-2), x, 0);
x+=44;
cg.setFont("7x11Numeric7Seg",1);
cg.drawString(("0"+t.getSeconds()).substr(-2), x, 20);
cg.setFont("6x8",1);
cg.drawString(meridian, x+2, 0);
let date = locale.date(t);
if (cg.stringWidth(date) < IW-64) {
cg.setFontAlign(0, -1);
cg.drawString(date,IW/2+32*inf.align,IH-8);
} else {
cg.setFontAlign(inf.align, -1);
cg.drawString(date,IW*(inf.align+1)/2,IH-8);
}
// draw to screen
g.drawImage(cgimg,IX,IY+OY);
}
// draw background
g.drawImage(img, 0,OY,bgoptions);
// draw clock itself and do it every second
draw();
var secondInterval = setInterval(draw,1000);
// load widgets
Bangle.loadWidgets();
Bangle.drawWidgets();
// Stop when LCD goes off
Bangle.on('lcdPower',on=>{
if (secondInterval) clearInterval(secondInterval);
secondInterval = undefined;
if (on) {
secondInterval = setInterval(draw,1000);
draw();
}
});
// Show launcher when button pressed
Bangle.setUI("clock");