Working GPS track recording - just need to fix the 'interface.html' to do the comms and do something with the data collected

README.md

@@ -193,6 +193,10 @@ about the app.
                               // iframe, and it must post back an 'app' structure
                               // like this one with 'storage','name' and 'id' set up
 
+  "interface": "interface.html",   // if supplied, apps/interface.html is loaded in an
+                              // iframe, and it may interact with the connected Bangle
+                              // to retrieve information from it
+
   "allow_emulator":true,      // if 'app.js' will run in the emulator, set to true to
                               // add an icon to allow your app to be tested
 

apps.json

@@ -173,7 +173,7 @@
     "icon": "gpstime.png",
     "version":"0.01",
     "description": "Update the Bangle.js's clock based on the time from the GPS receiver",
-    "tags": "tool",
+    "tags": "tool,gps",
     "storage": [
       {"name":"+gpstime","url":"gpstime.json"},
       {"name":"-gpstime","url":"gpstime.js"},
@@ -185,7 +185,7 @@
     "icon": "openlocation.png",
     "version":"0.01",
     "description": "Convert your current GPS location to a series of characters",
-    "tags": "tool,outdoors",
+    "tags": "tool,outdoors,gps",
     "storage": [
       {"name":"+openloc","url":"openlocation.json"},
       {"name":"-openloc","url":"openlocation.js","evaluate":true}
@@ -196,13 +196,28 @@
     "icon": "speedo.png",
     "version":"0.01",
     "description": "Show the current speed according to the GPS",
-    "tags": "tool,outdoors",
+    "tags": "tool,outdoors,gps",
     "storage": [
       {"name":"+speedo","url":"speedo.json"},
       {"name":"-speedo","url":"speedo.js"},
       {"name":"*speedo","url":"speedo-icon.js","evaluate":true}
     ]
   },
+  { "id": "gpsrec",
+    "name": "GPS Recorder",
+    "icon": "app.png",
+    "version":"0.01",
+    "interface": "interface.html",
+    "description": "Application that allows you to record a GPS track. Can run in background",
+    "tags": "tool,outdoors,gps",
+    "storage": [
+      {"name":"+gpsrec","url":"app.json"},
+      {"name":"-gpsrec","url":"app.js"},
+      {"name":"@gpsrec","url":"app-settings.json","evaluate":true},
+      {"name":"*gpsrec","url":"app-icon.js","evaluate":true},
+      {"name":"=gpsrec","url":"widget.js"}
+    ]
+  },
   { "id": "slevel",
     "name": "Spirit Level",
     "icon": "spiritlevel.png",

apps/gpsrec/ChangeLog

@@ -0,0 +1 @@
+0.00: New App!

apps/gpsrec/app-icon.js

@@ -0,0 +1 @@
+require("heatshrink").decompress(atob("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"))

apps/gpsrec/app-settings.json

@@ -0,0 +1,5 @@
+{
+  "recording":false,
+  "file":0,
+  "period":1
+}

apps/gpsrec/app.js

@@ -0,0 +1,115 @@
+Bangle.loadWidgets();
+Bangle.drawWidgets();
+
+var settings = require("Storage").readJSON("@gpsrec")||{};
+
+function getFN(n) {
+  return ".gpsrc"+n.toString(36);
+}
+
+function updateSettings() {
+  require("Storage").write("@gpsrec", settings);
+  if (WIDGETS["gpsrec"])
+    WIDGETS["gpsrec"].reload();
+}
+
+function showMainMenu() {
+  const mainmenu = {
+    '': { 'title': 'GPS Record' },
+    'RECORD': {
+      value: !!settings.recording,
+      format: v=>v?"On":"Off",
+      onchange: v => {
+        settings.recording = v;
+        updateSettings();
+      }
+    },
+    'File #': {
+      value: settings.file|0,
+      min: 0,
+      max: 35,
+      step: 1,
+      onchange: v => {
+        settings.recording = false;
+        settings.file = v;
+        updateSettings();
+      }
+    },
+    'Time Period': {
+      value: settings.period||1,
+      min: 1,
+      max: 60,
+      step: 1,
+      onchange: v => {
+        settings.recording = false;
+        settings.period = v;
+        updateSettings();
+      }
+    },
+    'View Tracks': viewTracks,
+    '< Back': ()=>{load();}
+  };
+  return E.showMenu(mainmenu);
+}
+
+function viewTracks() {
+  const menu = {
+    '': { 'title': 'GPS Tracks' }
+  };
+  var found = false;
+  for (var n=0;n<36;n++) {
+    var f = require("Storage").open(getFN(n),"r");
+    if (f.readLine()!==undefined) {
+      menu["Track "+n] = viewTrack.bind(null,n);
+      found = true;
+    }
+  }
+  if (!found)
+    menu["No Tracks found"] = function(){};
+  menu['< Back'] = showMainMenu;
+  return E.showMenu(menu);
+}
+
+function viewTrack(n) {
+  const menu = {
+    '': { 'title': 'GPS Track '+n }
+  };
+  var trackCount = 0;
+  var trackTime;
+  var f = require("Storage").open(getFN(n),"r");
+  var l = f.readLine();
+  if (l!==undefined) {
+    var c = l.split(",");
+    trackTime = new Date(0|c[0]);
+  }
+  while (l!==undefined) {
+    trackCount++;
+    // TODO: min/max/length of track?
+    l = f.readLine();
+  }
+  if (trackTime)
+    menu[" "+trackTime.toISOString().substr(0,16).replace("T"," ")] = function(){};
+  menu[trackCount+" records"] = function(){};
+  // TODO: option to draw it? Just scan through, project using min/max
+  menu['Erase'] = function() {
+    E.showPrompt("Delete Track?").then(function(v) {
+      if (v) {
+        settings.recording = false;
+        updateSettings();
+        var f = require("Storage").open(getFN(n),"r");
+        f.erase();
+        viewTracks();
+      } else
+        viewTrack(n);
+    });
+  };
+  menu['< Back'] = viewTracks;
+  print(menu);
+  return E.showMenu(menu);
+}
+
+showMainMenu();
+
+
+// f = require("Storage").open(".gpsrc"+n,"r");
+// f.readLine()...

apps/gpsrec/app.json

@@ -0,0 +1,5 @@
+{
+  "name":"GPS Recorder",
+  "icon":"*gpsrec",
+  "src":"-gpsrec"
+}

apps/gpsrec/interface.html

@@ -0,0 +1,37 @@
+<html>
+  <head>
+    <link rel="stylesheet" href="../../css/spectre.min.css">
+  </head>
+  <body>
+
+    <p>Hello!</p>
+
+    <script>
+var __id = 0, __idlookup = [];
+var Puck = {
+  eval : function(data,callback) {
+    __id++;
+    __idlookup[__id] = callback;
+    window.postMessage({type:"eval",data:data,id:__id});
+  },write : function(data,callback) {
+    __id++;
+    __idlookup[__id] = callback;
+    window.postMessage({type:"write",data:data,id:__id});
+  }
+};
+window.addEventListener("message", function(event) {
+  var msg = event.data;
+  if (msg.type=="evalrsp" || msg.type=="writersp") {
+    var cb = __idlookup[msg.id];
+    delete __idlookup[msg.id];
+    cb(msg.data);
+  }
+}, false);
+
+Puck.eval("E.getTemperature()",function(d) {
+  console.log("GOT: "+d);
+});
+
+    </script>
+  </body>
+</html>

apps/gpsrec/widget.js

@@ -0,0 +1,76 @@
+(() => {
+  // add the width
+  var xpos = WIDGETPOS.tl;
+  WIDGETPOS.tl += 24;/* the widget width plus some extra pixel to keep distance to others */;
+  var settings = {};
+  var hasFix = false;
+  var fixToggle = false; // toggles once for each reading
+  var gpsTrack; // file for GPS track
+  var periodCtr = 0;
+
+  // draw your widget at xpos
+  function draw() {
+    g.reset();
+    g.setFont("4x6");
+    g.setFontAlign(0,0);
+    g.clearRect(xpos,0,xpos+23,23);
+
+    if (!settings.recording) {
+      g.setColor("#606060");
+    } else {
+      g.setColor("#ff0000");
+      if (hasFix) {
+        if (fixToggle) {
+          g.fillCircle(xpos+11,11,9);
+          g.setColor("#000000");
+        } else
+          g.drawCircle(xpos+11,11,9);
+      } else {
+        g.setColor(fixToggle ? "#ff0000" : "#7f0000");
+        g.drawString("NO",xpos+12,5);
+        g.drawString("FIX",xpos+12,19);
+      }
+    }
+    g.drawString("GPS",xpos+12,12);
+  }
+
+  function onGPS(fix) {
+    hasFix = fix.fix;
+    fixToggle = !fixToggle;
+    draw();
+    if (hasFix) {
+      periodCtr--;
+      if (periodCtr<=0) {
+        periodCtr = settings.period;
+        if (gpsTrack) gpsTrack.write([
+          fix.time.getTime()|0,
+          fix.lat.toFixed(5),
+          fix.lon.toFixed(5),
+          fix.alt
+        ].join(",")+"\n");
+      }
+    }
+  }
+
+  // Called by the GPS app to reload settings and decide what's
+  function reload() {
+    settings = require("Storage").readJSON("@gpsrec")||{};
+    settings.period = settings.period||1;
+    settings.file |= 0;
+
+    Bangle.removeListener('GPS',onGPS);
+    if (settings.recording) {
+      Bangle.on('GPS',onGPS);
+      Bangle.setGPSPower(1);
+      var n = settings.file.toString(36);
+      gpsTrack = require("Storage").open(".gpsrc"+n,"a");
+    } else {
+      Bangle.setGPSPower(0);
+      gpsTrack = undefined;
+    }
+    draw();
+  }
+  reload();
+  // add the widget
+  WIDGETS["gpsrec"]={draw:draw,reload:reload};
+})()

index.js

@@ -86,6 +86,8 @@ function showPrompt(title, text) {
   });
 }
 function handleCustomApp(app) {
+  // Pops up an IFRAME that allows an app to be customised
+  if (!app.custom) throw new Error("App doesn't have custom HTML");
   return new Promise((resolve,reject) => {
     var modal = htmlElement(`<div class="modal active">
       <a href="#close" class="modal-overlay " aria-label="Close"></a>
@@ -119,6 +121,58 @@ function handleCustomApp(app) {
     }, false);
   });
 }
+
+function handleAppInterface(app) {
+  // IFRAME interface window that can be used to get data from the app
+  if (!app.interface) throw new Error("App doesn't have interface HTML");
+  return new Promise((resolve,reject) => {
+    var modal = htmlElement(`<div class="modal active">
+      <a href="#close" class="modal-overlay " aria-label="Close"></a>
+      <div class="modal-container" style="height:100%">
+        <div class="modal-header">
+          <a href="#close" class="btn btn-clear float-right" aria-label="Close"></a>
+          <div class="modal-title h5">${escapeHtml(app.name)}</div>
+        </div>
+        <div class="modal-body" style="height:100%">
+          <div class="content" style="height:100%">
+            <iframe style="width:100%;height:100%;border:0px;">
+          </div>
+        </div>
+      </div>
+    </div>`);
+    document.body.append(modal);
+    htmlToArray(modal.getElementsByTagName("a")).forEach(button => {
+      button.addEventListener("click",event => {
+        event.preventDefault();
+        modal.remove();
+        //reject("Window closed");
+      });
+    });
+    var iframe = modal.getElementsByTagName("iframe")[0];
+    var iwin = iframe.contentWindow;
+    iwin.addEventListener("message", function(event) {
+      var msg = event.data;
+      if (msg.type=="eval") {
+        Puck.eval(msg.data, function(result) {
+          iwin.postMessage({
+            type : "evalrsp",
+            data : result,
+            id : msg.id
+          });
+        });
+      } else if (msg.type=="write") {
+        Puck.write(msg.data, function() {
+          iwin.postMessage({
+            type : "writersp",
+            id : msg.id
+          });
+        });
+      }
+    }, false);
+    iframe.src = `apps/${app.id}/${app.interface}`
+  });
+}
+
 // ===========================================  Top Navigation
 function showTab(tabname) {
   htmlToArray(document.querySelectorAll("#tab-navigate .tab-item")).forEach(tab => {
@@ -162,6 +216,7 @@ function refreshLibrary() {
       <p class="tile-subtitle">${escapeHtml(app.description)}</p>
     </div>
     <div class="tile-action">
+      <button class="btn btn-link btn-action btn-lg ${(appInstalled&&app.interface)?"":"d-hide"}" appid="${app.id}" title="Download data from app"><i class="icon icon-download"></i></button>
       <button class="btn btn-link btn-action btn-lg ${app.allow_emulator?"":"d-hide"}" appid="${app.id}" title="Try in Emulator"><i class="icon icon-share"></i></button>
       <button class="btn btn-link btn-action btn-lg ${version.canUpdate?"":"d-hide"}" appid="${app.id}" title="Update App"><i class="icon icon-refresh"></i></button>
       <button class="btn btn-link btn-action btn-lg ${!appInstalled?"":"d-hide"}" appid="${app.id}" title="Upload App"><i class="icon icon-upload"></i></button>
@@ -236,6 +291,8 @@ function refreshLibrary() {
         icon.classList.remove("icon-refresh");
         icon.classList.add("loading");
         updateApp(app);
+      } else if (icon.classList.contains("icon-download")) {
+        handleAppInterface(app);
       }
     });
   });
@@ -272,6 +329,7 @@ function updateApp(app) {
   });
 }
 
+
 function appNameToApp(appName) {
   var app = appJSON.find(app=>app.id==appName);
   if (app) return app;
@@ -301,9 +359,9 @@ function refreshMyApps() {
   var panelbody = document.querySelector("#myappscontainer .panel-body");
   var tab = document.querySelector("#tab-myappscontainer a");
   tab.setAttribute("data-badge", appsInstalled.length);
-  panelbody.innerHTML = appsInstalled.map(appJSON => {
-var app = appNameToApp(appJSON.id);
-var version = getVersionInfo(app, appJSON);
+  panelbody.innerHTML = appsInstalled.map(appInstalled => {
+var app = appNameToApp(appInstalled.id);
+var version = getVersionInfo(app, appInstalled);
 return `<div class="tile column col-6 col-sm-12 col-xs-12">
     <div class="tile-icon">
       <figure class="avatar"><img src="apps/${app.icon?`${app.id}/${app.icon}`:"unknown.png"}" alt="${escapeHtml(app.name)}"></figure>
@@ -313,6 +371,7 @@ return `<div class="tile column col-6 col-sm-12 col-xs-12">
       <p class="tile-subtitle">${escapeHtml(app.description)}</p>
     </div>
     <div class="tile-action">
+      <button class="btn btn-link btn-action btn-lg ${(appInstalled&&app.interface)?"":"d-hide"}" appid="${app.id}" title="Download data from app"><i class="icon icon-download"></i></button>
       <button class="btn btn-link btn-action btn-lg ${version.canUpdate?'':'d-hide'}" appid="${app.id}" title="Update App"><i class="icon icon-refresh"></i></button>
       <button class="btn btn-link btn-action btn-lg" appid="${app.id}" title="Remove App"><i class="icon icon-delete"></i></button>
     </div>
@@ -328,6 +387,7 @@ return `<div class="tile column col-6 col-sm-12 col-xs-12">
       // check icon to figure out what we should do
       if (icon.classList.contains("icon-delete")) removeApp(app);
       if (icon.classList.contains("icon-refresh")) updateApp(app);
+      if (icon.classList.contains("icon-download")) handleAppInterface(app)
     });
   });
 }