openstmap 0.33: Map zoom by tapping is now only when tapping at each corner (helps with accidental zooming)

When GPS location is offscreen, draw a blue circle showing the direction to scroll

apps/openstmap/ChangeLog

@@ -39,3 +39,5 @@
 0.31: Reset draw colours before rendering (to allow black and white maps)
 0.32: Move to non-deprecated track drawing using the recorder library
       Add option to hide widgets
+0.33: Map zoom by tapping is now only when tapping at each corner (helps with accidental zooming)
+      When GPS location is offscreen, draw a blue circle showing the direction to scroll

apps/openstmap/README.md

@@ -6,7 +6,7 @@ allows you to use the maps in your Bangle.js applications.
 
 ## Uploader
 
-Once you've installed OpenStreepMap on your Bangle, find it
+Once you've installed OpenStreetMap on your Bangle, find it
 in the App Loader and click the Disk icon next to it.
 
 A window will pop up showing what maps you have loaded.
@@ -34,13 +34,16 @@ and marks the path that you've been travelling (if enabled), and
 displays waypoints in the watch (if dependencies exist).
 
 * Drag on the screen to move the map
-* Click bottom left to zoom in, bottom right to zoom out
+* Click at the bottom left corner to zoom in, bottom right to zoom out (or you can choose from the menu)
 * Press the button to bring up a menu, where you can zoom, go to GPS location,
 put the map back in its default location, or choose whether to draw the currently
 recording GPS track (from the `Recorder` app).
 
-**Note:** If enabled, drawing the currently recorded GPS track can take a second
+The map displays:
-or two (which happens after you've finished scrolling the screen with your finger).
+
+* Your current GPS location and angle (in blue) or a circle at the edge of the screen if your location is offscreen
+* Your currently recorded/recording track in red (if the `Recorder` app is installed)
+* Any waypoints as red markers (if the `Waypoint` app is installed)
 
 
 ## Library

apps/openstmap/app.js

@@ -2,20 +2,21 @@ var m = require("openstmap");
 var R;
 var fix = {};
 var mapVisible = false;
-var hasScrolled = false;
 var settings = require("Storage").readJSON("openstmap.json",1)||{};
 var HASWIDGETS = !settings.noWidgets;
 var plotTrack;
 let checkMapPos = false; // Do we need to check the if the coordinates we have are valid
-var startDrag = 0;
+var startDrag = 0; //< to detect a short tap when zooming
 var hasRecorder = require("Storage").read("recorder")!=undefined; // do we have the recorder library?
+var hasWaypoints = require("Storage").read("waypoints")!=undefined; // do we have the recorder library?
+var labelFont = g.getFonts().includes("17")?"17":"6x8:2";
+var imgLoc, ovLoc, ovSize = 34; /*Math.ceil(Math.sqrt(imgLoc[0]*imgLoc[0]+imgLoc[1]*imgLoc[1]))*/
 
 if (Bangle.setLCDOverlay) {
   // Icon for current location+direction: https://icons8.com/icon/11932/gps 24x24, 1 Bit + transparency + inverted
-  var imgLoc = require("heatshrink").decompress(atob("jEYwINLAQk8AQl+AQn/AQcB/+AAQUD//AAQUH//gAQUP//wAQUf//4j8AvA9IA=="));
+  imgLoc = require("heatshrink").decompress(atob("jEYwINLAQk8AQl+AQn/AQcB/+AAQUD//AAQUH//gAQUP//wAQUf//4j8AvA9IA=="));
   // overlay buffer for current location, a bit bigger then image so we can rotate
-  const ovSize = Math.ceil(Math.sqrt(imgLoc[0]*imgLoc[0]+imgLoc[1]*imgLoc[1]));
+  ovLoc = Graphics.createArrayBuffer(ovSize,ovSize,imgLoc[2] & 0x7f,{msb:true});
-  var ovLoc = Graphics.createArrayBuffer(ovSize,ovSize,imgLoc[2] & 0x7f,{msb:true});
 }
 
 if (settings.lat !== undefined && settings.lon !== undefined && settings.scale !== undefined) {
@@ -66,6 +67,7 @@ function redraw() {
 
 // Draw the POIs
 function drawPOI() {
+  if (!hasWaypoints) return;
   let waypoints;
   try {
     waypoints = require("waypoints").load();
@@ -73,16 +75,15 @@ function drawPOI() {
     // Waypoints module not available.
     return;
   }
-  g.setFont("Vector", 18);
+  if (!waypoints) return;
+  g;
+   var img = atob("DRXCAP//APgfAAAAAFVAAVVVAVVVUFUBVFUAFVVABVVQAVRVAVQVVVUBVVUAVVVABVVAAVVQABVQAAVUAABUAACVgACJiACISIAIiIAAiIAA");
+  g.setFont(labelFont).setFontAlign(-1,0);
   waypoints.forEach((wp, idx) => {
     if (wp.lat === undefined || wp.lon === undefined) return;
     var p = m.latLonToXY(wp.lat, wp.lon);
-    var sz = 2;
+    g.setColor("#fff").drawImage(img, p.x-6, p.y-18);
-    g.setColor(0,0,0);
+    g.setColor(0).drawString(wp.name, p.x+8, p.y);
-    g.fillRect(p.x-sz, p.y-sz, p.x+sz, p.y+sz);
-    g.setColor(0,0,0);
-    g.drawString(wp.name, p.x, p.y);
-    //print(wp.name);
   });
 }
 
@@ -119,17 +120,31 @@ function drawLocation() {
   // TODO: if this is getting off the screen, we could adjust the map over? Also show marker to show what direction we're offscreen
 
   ovLoc.clear();
+
   if (isInside(R, p, ovLoc.getWidth(), ovLoc.getHeight())) { // avoid drawing over widget area
     const angle = settings.dirSrc === 1 ? fix.course : Bangle.getCompass().heading;
     if (!isNaN(angle)) {
       ovLoc.drawImage(imgLoc, ovLoc.getWidth()/2, ovLoc.getHeight()/2, {rotate: angle*Math.PI/180});
     }
+  } else { // if off-screen, draw a blue dot on the edge
+    var mx = (R.x+R.x2)/2, my = (R.y+R.y2)/2;
+    var dy = p.y - mx, dx = p.x - my;
+    if (Math.abs(dx)>Math.abs(dy)) {
+      dy = mx * dy / Math.abs(dx);
+      dx = mx * Math.sign(dx);
+    } else {
+      dx = my * dx / Math.abs(dy);
+      dy = my * Math.sign(dy);
     }
-  Bangle.setLCDOverlay({width:ovLoc.getWidth(), height:ovLoc.getHeight(),
+    p.x = mx+dx;
+    p.y = my+dy;
+    ovLoc.fillCircle(ovSize/2,ovSize/2,16);
+  }
+  Bangle.setLCDOverlay({width:ovSize, height:ovSize,
           bpp:ovLoc.getBPP(), transparent:0,
           palette:new Uint16Array([0, g.toColor("#00F")]),
           buffer:ovLoc.buffer
-        }, p.x-ovLoc.getWidth()/2, p.y-ovLoc.getHeight()/2);
+        }, p.x-ovSize/2, p.y-ovSize/2);
 
   this.hasOverlay = true;
 }
@@ -252,26 +267,28 @@ function showMap() {
     if (e.b) {
       if (!startDrag)
         startDrag = getTime();
+      if (e.dx || e.dy) {
         g.setClipRect(R.x,R.y,R.x2,R.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;
+      }
       drawLocation();
-    } else if (hasScrolled) {
+    } else if (startDrag) {
       const delta = getTime() - startDrag;
       startDrag = 0;
-      hasScrolled = false;
+      if (delta < 0.2) { // short tap?
-      if (delta < 0.2) {
+        if (e.y > g.getHeight() - 32) { // at bottom egde?
-        if (e.y > g.getHeight() / 2) {
+          if (e.x < 32) { // zoom in/out
-          if (e.x < g.getWidth() / 2) {
             m.scale /= 2;
-          } else {
-            m.scale *= 2;
-          }
-        }
             g.reset().clearRect(R);
           }
+          if (e.x > g.getHeight() - 32) {
+            m.scale *= 2;
+            g.reset().clearRect(R);
+          }
+        }
+      }
       redraw();
     }
   }, btn: () => showMenu() });

apps/openstmap/metadata.json

@@ -2,7 +2,7 @@
   "id": "openstmap",
   "name": "OpenStreetMap",
   "shortName": "OpenStMap",
-  "version": "0.32",
+  "version": "0.33",
   "description": "Loads map tiles from OpenStreetMap onto your Bangle.js and displays a map of where you are. Once installed this also adds map functionality to `GPS Recorder` and `Recorder` apps",
   "readme": "README.md",
   "icon": "app.png",