BangleApps/apps/shownearby/app.js

94 lines
2.3 KiB
JavaScript

var m = require("openstmap");
var HASWIDGETS = true;
var y1,y2;
var fix = {};
function redraw() {
g.setClipRect(0,y1,g.getWidth()-1,y2);
m.draw();
if (fix.fix) drawMarker(fix,"#f00");
if (WIDGETS["gpsrec"] && WIDGETS["gpsrec"].plotTrack) {
g.flip(); // force immediate draw on double-buffered screens - track will update later
g.setColor(0.75,0.2,0);
WIDGETS["gpsrec"].plotTrack(m);
}
g.setClipRect(0,0,g.getWidth()-1,g.getHeight()-1);
}
function drawMarker(pt, col) {
var p = m.latLonToXY(pt.lat, pt.lon);
g.setColor(col).fillRect(p.x-3, p.y-3, p.x+3, p.y+3);
}
var fix;
Bangle.on('GPS',function(f) {
fix=f;
g.reset().clearRect(0,y1,g.getWidth()-1,y1+8).setFont("6x8").setFontAlign(0,0);
var txt = fix.satellites+" satellites";
if (!fix.fix)
txt += " - NO FIX";
g.drawString(txt,g.getWidth()/2,y1 + 4);
if (fix.fix) drawMarker(fix,"#f00");
if (fix.fix) {
var fdata = new Float32Array([f.lat,f.lon]);
NRF.setAdvertising({},{
phy:"coded",
connectable:false,
scannable:false,
showName:false,
manufacturer:0x0590,
manufacturerData:fdata.buffer
});
}
});
Bangle.setGPSPower(1, "app");
if (HASWIDGETS) {
Bangle.loadWidgets();
Bangle.drawWidgets();
y1 = 24;
var hasBottomRow = Object.keys(WIDGETS).some(w=>WIDGETS[w].area[0]=="b");
y2 = g.getHeight() - (hasBottomRow ? 24 : 1);
} else {
y1=0;
y2=g.getHeight()-1;
}
redraw();
function recenter() {
if (!fix.fix) return;
m.lat = fix.lat;
m.lon = fix.lon;
redraw();
}
setWatch(recenter, global.BTN2?BTN2:BTN1, {repeat:true});
var hasScrolled = false;
Bangle.on('drag',e=>{
if (e.b) {
g.setClipRect(0,y1,g.getWidth()-1,y2);
g.scroll(e.dx,e.dy);
m.scroll(e.dx,e.dy);
g.setClipRect(0,0,g.getWidth()-1,g.getHeight()-1);
hasScrolled = true;
} else if (hasScrolled) {
hasScrolled = false;
redraw();
}
});
// Start scanning
NRF.setScan(function(d) {
var latLon = new Float32Array(d.manufacturerData);
drawMarker({lat:latLon[0], lon:latLon[1]},"#0f0");
},{phy:"coded",filters: [{ manufacturerData:{0x0590:{}} }]});
// Set transmit power to max
NRF.setTxPower(8);
// when leaving the app, reset the advertising to default so we can reconnect!
Bangle.on('kill', function() {
NRF.setAdvertising({},{});
});