1 /* This Source Code Form is subject to the terms of the Mozilla Public
2 * License, v. 2.0. If a copy of the MPL was not distributed with this file,
3 * You can obtain one at http://mozilla.org/MPL/2.0/. */
5 var gMapCanvas, gMapContext, gTrackCanvas, gTrackContext, gGeolocation;
9 var gMaxZoom = 18; // The minimum is 0.
11 var gMinTrackAccuracy = 1000; // meters
12 var gTrackWidth = 2; // pixels
13 var gTrackColor = "#FF0000";
14 var gCurLocSize = 6; // pixels
15 var gCurLocColor = "#A00000";
18 // OSM tile usage policy: http://wiki.openstreetmap.org/wiki/Tile_usage_policy
19 // Find some more OSM ones at http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames#Tile_servers
21 {name: "OpenStreetMap (Mapnik)",
22 url: "http://tile.openstreetmap.org/{z}/{x}/{y}.png",
23 copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>'},
25 {name: "Cycle Map (OSM)",
26 url: "http://[a-c].tile.opencyclemap.org/cycle/{z}/{x}/{y}.png",
27 copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>'},
29 {name: "Transport Map (OSM)",
30 url: "http://[a-c].tile2.opencyclemap.org/transport/{z}/{x}/{y}.png",
31 copyright: 'Map data and imagery © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>'},
33 {name: "MapQuest OSM",
34 url: "http://otile[1-4].mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.png",
35 copyright: 'Map data © <a href="http://www.openstreetmap.org/">OpenStreetMap</a> and contributors (<a href="http://www.openstreetmap.org/copyright">ODbL/CC-BY-SA</a>), tiles Courtesy of <a href="http://www.mapquest.com/">MapQuest</a>.'},
37 {name: "MapQuest Open Aerial",
38 url: "http://otile[1-4].mqcdn.com/tiles/1.0.0/sat/{z}/{x}/{y}.jpg",
39 copyright: 'Tiles Courtesy of <a href="http://www.mapquest.com/">MapQuest</a>, portions Courtesy NASA/JPL-Caltech and U.S. Depart. of Agriculture, Farm Service Agency.'},
41 {name: "OpenGeoServer Aerial",
42 url: "http://services.opengeoserver.org/tiles/1.0.0/globe.aerial_EPSG3857/{z}/{x}/{y}.png?origin=nw",
43 copyright: 'Tiles by <a href="http://www.opengeoserver.org/">OpenGeoServer.org</a>, <a href="https://creativecommons.org/licenses/by/3.0/at/">CC-BY 3.0 AT</a>.'},
46 url: " http://mt1.google.com/vt/x={x}&y={y}&z={z}",
47 copyright: 'Map data and imagery © <a href="http://maps.google.com/">Google</a>'},
49 var gActiveMap = "osm_mapnik";
51 var gPos = {x: 35630000.0, // Current position in the map in pixels at the maximum zoom level (18)
52 y: 23670000.0, // The range is 0-67108864 (2^gMaxZoom * gTileSize)
53 z: 5}; // This could be fractional if supported being between zoom levels.
61 var gMapPrefsLoaded = false;
63 var gDragging = false;
64 var gDragTouchID, gPinchStartWidth;
68 var gLastTrackPoint, gLastDrawnPoint;
69 var gCenterPosition = true;
74 gGeolocation = navigator.geolocation;
75 gMapCanvas = document.getElementById("map");
76 gMapContext = gMapCanvas.getContext("2d");
77 gTrackCanvas = document.getElementById("track");
78 gTrackContext = gTrackCanvas.getContext("2d");
80 gActiveMap = "osm_mapnik";
84 gGeolocation = geofake;
85 var hiddenList = document.getElementsByClassName("debugHide");
86 // last to first - list of elements with that class is changing!
87 for (var i = hiddenList.length - 1; i >= 0; i--) {
88 hiddenList[i].classList.remove("debugHide");
92 console.log("map vars set, loading prefs...");
96 function loadPrefs(aEvent) {
97 if (aEvent && aEvent.type == "prefs-step") {
98 console.log("wait: " + gWaitCounter);
99 if (gWaitCounter == 0) {
100 gAction.removeEventListener(aEvent.type, loadPrefs, false);
101 gMapPrefsLoaded = true;
102 console.log("prefs loaded.");
104 gTrackCanvas.addEventListener("mouseup", mapEvHandler, false);
105 gTrackCanvas.addEventListener("mousemove", mapEvHandler, false);
106 gTrackCanvas.addEventListener("mousedown", mapEvHandler, false);
107 gTrackCanvas.addEventListener("mouseout", mapEvHandler, false);
109 gTrackCanvas.addEventListener("touchstart", mapEvHandler, false);
110 gTrackCanvas.addEventListener("touchmove", mapEvHandler, false);
111 gTrackCanvas.addEventListener("touchend", mapEvHandler, false);
112 gTrackCanvas.addEventListener("touchcancel", mapEvHandler, false);
113 gTrackCanvas.addEventListener("touchleave", mapEvHandler, false);
115 gTrackCanvas.addEventListener("wheel", mapEvHandler, false);
117 document.getElementById("body").addEventListener("keydown", mapEvHandler, false);
119 document.getElementById("copyright").innerHTML =
120 gMapStyles[gActiveMap].copyright;
122 gLoadingTile = new Image();
123 gLoadingTile.src = "style/loading.png";
124 gLoadingTile.onload = function() {
125 var throwEv = new CustomEvent("mapinit-done");
126 gAction.dispatchEvent(throwEv);
132 gAction.removeEventListener(aEvent.type, loadPrefs, false);
133 gAction.addEventListener("prefs-step", loadPrefs, false);
135 gPrefs.get("position", function(aValue) {
140 var throwEv = new CustomEvent("prefs-step");
141 gAction.dispatchEvent(throwEv);
144 gPrefs.get("center_map", function(aValue) {
145 if (aValue === undefined)
146 document.getElementById("centerCheckbox").checked = true;
148 document.getElementById("centerCheckbox").checked = aValue;
149 setCentering(document.getElementById("centerCheckbox"));
151 var throwEv = new CustomEvent("prefs-step");
152 gAction.dispatchEvent(throwEv);
155 gPrefs.get("tracking_enabled", function(aValue) {
156 if (aValue === undefined)
157 document.getElementById("trackCheckbox").checked = true;
159 document.getElementById("trackCheckbox").checked = aValue;
161 var throwEv = new CustomEvent("prefs-step");
162 gAction.dispatchEvent(throwEv);
165 var trackLoadStarted = false;
166 var redrawBase = 100;
167 gTrackStore.getListStepped(function(aTPoint) {
169 // Add in front and return new length.
170 var tracklen = gTrack.unshift(aTPoint);
171 // Redraw track periodically, larger distance the longer it gets.
172 // Initial paint will do initial track drawing.
173 if (tracklen % redrawBase == 0) {
175 redrawBase = tracklen;
179 // Last point received.
182 if (!trackLoadStarted) {
183 // We have the most recent point, if present, rest will load async.
184 trackLoadStarted = true;
186 var throwEv = new CustomEvent("prefs-step");
187 gAction.dispatchEvent(throwEv);
193 function resizeAndDraw() {
194 var viewportWidth = Math.min(window.innerWidth, window.outerWidth);
195 var viewportHeight = Math.min(window.innerHeight, window.outerHeight);
196 if (gMapCanvas && gTrackCanvas) {
197 gMapCanvas.width = viewportWidth;
198 gMapCanvas.height = viewportHeight;
199 gTrackCanvas.width = viewportWidth;
200 gTrackCanvas.height = viewportHeight;
206 // Using scale(x, y) together with drawing old data on scaled canvas would be an improvement for zooming.
207 // See https://developer.mozilla.org/en-US/docs/Canvas_tutorial/Transformations#Scaling
210 if (gPos.z < gMaxZoom) {
223 function zoomTo(aTargetLevel) {
224 aTargetLevel = parseInt(aTargetLevel);
225 if (aTargetLevel >= 0 && aTargetLevel <= gMaxZoom) {
226 gPos.z = aTargetLevel;
231 function gps2xy(aLatitude, aLongitude) {
232 var maxZoomFactor = Math.pow(2, gMaxZoom) * gTileSize;
233 var convLat = aLatitude * Math.PI / 180;
234 var rawY = (1 - Math.log(Math.tan(convLat) +
235 1 / Math.cos(convLat)) / Math.PI) / 2 * maxZoomFactor;
236 var rawX = (aLongitude + 180) / 360 * maxZoomFactor;
237 return {x: Math.round(rawX),
238 y: Math.round(rawY)};
241 function xy2gps(aX, aY) {
242 var maxZoomFactor = Math.pow(2, gMaxZoom) * gTileSize;
243 var n = Math.PI - 2 * Math.PI * aY / maxZoomFactor;
244 return {latitude: 180 / Math.PI *
245 Math.atan(0.5 * (Math.exp(n) - Math.exp(-n))),
246 longitude: aX / maxZoomFactor * 360 - 180};
249 function setMapStyle() {
250 var mapSel = document.getElementById("mapSelector");
251 if (mapSel.selectedIndex >= 0 && gActiveMap != mapSel.value) {
252 gActiveMap = mapSel.value;
253 document.getElementById("copyright").innerHTML =
254 gMapStyles[gActiveMap].copyright;
260 // A sane mod function that works for negative numbers.
263 return ((a % b) + b) % b;
266 function normalizeCoords(aCoords) {
267 var zoomFactor = Math.pow(2, aCoords.z);
268 return {x: mod(aCoords.x, zoomFactor),
269 y: mod(aCoords.y, zoomFactor),
273 // Returns true if the tile is outside the current view.
274 function isOutsideWindow(t) {
275 var pos = decodeIndex(t);
277 var zoomFactor = Math.pow(2, gMaxZoom - pos.z);
278 var wid = gMapCanvas.width * zoomFactor;
279 var ht = gMapCanvas.height * zoomFactor;
284 var sz = gTileSize * zoomFactor;
285 if (pos.x > gPos.x + wid / 2 || pos.y > gPos.y + ht / 2 ||
286 pos.x + sz < gPos.x - wid / 2 || pos.y - sz < gPos.y - ht / 2)
291 function encodeIndex(x, y, z) {
292 var norm = normalizeCoords({x: x, y: y, z: z});
293 return norm.x + "," + norm.y + "," + norm.z;
296 function decodeIndex(encodedIdx) {
297 var ind = encodedIdx.split(",", 3);
298 return {x: ind[0], y: ind[1], z: ind[2]};
301 function drawMap(aPixels, aOverdraw) {
302 // aPixels is an object with left/right/top/bottom members telling how many
303 // pixels on the borders should actually be drawn.
304 // aOverdraw is a bool that tells if we should draw placeholders or draw
305 // straight over the existing content.
307 aPixels = {left: gMapCanvas.width, right: gMapCanvas.width,
308 top: gMapCanvas.height, bottom: gMapCanvas.height};
312 document.getElementById("zoomLevel").textContent = gPos.z;
313 gZoomFactor = Math.pow(2, gMaxZoom - gPos.z);
314 var wid = gMapCanvas.width * gZoomFactor; // Width in level 18 pixels.
315 var ht = gMapCanvas.height * gZoomFactor; // Height in level 18 pixels.
316 var size = gTileSize * gZoomFactor; // Tile size in level 18 pixels.
318 var xMin = gPos.x - wid / 2; // Corners of the window in level 18 pixels.
319 var yMin = gPos.y - ht / 2;
320 var xMax = gPos.x + wid / 2;
321 var yMax = gPos.y + ht / 2;
323 if (gMapPrefsLoaded && mainDB)
324 gPrefs.set("position", gPos);
326 var tiles = {left: Math.ceil((xMin + aPixels.left * gZoomFactor) / size) -
327 (aPixels.left ? 0 : 1),
328 right: Math.floor((xMax - aPixels.right * gZoomFactor) / size) -
329 (aPixels.right ? 1 : 0),
330 top: Math.ceil((yMin + aPixels.top * gZoomFactor) / size) -
331 (aPixels.top ? 0 : 1),
332 bottom: Math.floor((yMax - aPixels.bottom * gZoomFactor) / size) -
333 (aPixels.bottom ? 1 : 0)};
335 // Go through all the tiles in the map, find out if to draw them and do so.
336 for (var x = Math.floor(xMin / size); x < Math.ceil(xMax / size); x++) {
337 for (var y = Math.floor(yMin / size); y < Math.ceil(yMax / size); y++) { // slow script warnings on the tablet appear here!
338 // Only go to the drawing step if we need to draw this tile.
339 if (x < tiles.left || x > tiles.right ||
340 y < tiles.top || y > tiles.bottom) {
341 // Round here is **CRUCIAL** otherwise the images are filtered
342 // and the performance sucks (more than expected).
343 var xoff = Math.round((x * size - xMin) / gZoomFactor);
344 var yoff = Math.round((y * size - yMin) / gZoomFactor);
345 // Draw placeholder tile unless we overdraw.
347 (x < tiles.left -1 || x > tiles.right + 1 ||
348 y < tiles.top -1 || y > tiles.bottom + 1))
349 gMapContext.drawImage(gLoadingTile, xoff, yoff);
351 // Initiate loading/drawing of the actual tile.
352 gTileService.get(gActiveMap, {x: x, y: y, z: gPos.z},
353 function(aImage, aStyle, aCoords) {
354 // Only draw if this applies for the current view.
355 if ((aStyle == gActiveMap) && (aCoords.z == gPos.z)) {
356 var ixMin = gPos.x - wid / 2;
357 var iyMin = gPos.y - ht / 2;
358 var ixoff = Math.round((aCoords.x * size - ixMin) / gZoomFactor);
359 var iyoff = Math.round((aCoords.y * size - iyMin) / gZoomFactor);
360 var URL = window.URL;
361 var imgURL = URL.createObjectURL(aImage);
362 var imgObj = new Image();
364 imgObj.onload = function() {
365 gMapContext.drawImage(imgObj, ixoff, iyoff);
366 URL.revokeObjectURL(imgURL);
376 function drawTrack() {
377 gLastDrawnPoint = null;
378 gCurPosMapCache = undefined;
379 gTrackContext.clearRect(0, 0, gTrackCanvas.width, gTrackCanvas.height);
381 for (var i = 0; i < gTrack.length; i++) {
382 drawTrackPoint(gTrack[i].coords.latitude, gTrack[i].coords.longitude,
383 (i + 1 >= gTrack.length));
388 function drawTrackPoint(aLatitude, aLongitude, lastPoint) {
389 var trackpoint = gps2xy(aLatitude, aLongitude);
390 // lastPoint is for optimizing (not actually executing the draw until the last)
391 trackpoint.optimized = (lastPoint === false);
392 var mappos = {x: Math.round((trackpoint.x - gPos.x) / gZoomFactor + gMapCanvas.width / 2),
393 y: Math.round((trackpoint.y - gPos.y) / gZoomFactor + gMapCanvas.height / 2)};
395 if (!gLastDrawnPoint || !gLastDrawnPoint.optimized) {
396 gTrackContext.strokeStyle = gTrackColor;
397 gTrackContext.fillStyle = gTrackContext.strokeStyle;
398 gTrackContext.lineWidth = gTrackWidth;
399 gTrackContext.lineCap = "round";
400 gTrackContext.lineJoin = "round";
402 if (!gLastDrawnPoint || gLastDrawnPoint == trackpoint) {
403 // This breaks optimiziation, so make sure to close path and reset optimization.
404 if (gLastDrawnPoint && gLastDrawnPoint.optimized)
405 gTrackContext.stroke();
406 gTrackContext.beginPath();
407 trackpoint.optimized = false;
408 gTrackContext.arc(mappos.x, mappos.y,
409 gTrackContext.lineWidth, 0, Math.PI * 2, false);
410 gTrackContext.fill();
413 if (!gLastDrawnPoint || !gLastDrawnPoint.optimized) {
414 gTrackContext.beginPath();
415 gTrackContext.moveTo(Math.round((gLastDrawnPoint.x - gPos.x) / gZoomFactor + gMapCanvas.width / 2),
416 Math.round((gLastDrawnPoint.y - gPos.y) / gZoomFactor + gMapCanvas.height / 2));
418 gTrackContext.lineTo(mappos.x, mappos.y);
419 if (!trackpoint.optimized)
420 gTrackContext.stroke();
422 gLastDrawnPoint = trackpoint;
425 function drawCurrentLocation(trackPoint) {
426 var locpoint = gps2xy(trackPoint.coords.latitude, trackPoint.coords.longitude);
427 var circleRadius = Math.round(gCurLocSize / 2);
428 var mappos = {x: Math.round((locpoint.x - gPos.x) / gZoomFactor + gMapCanvas.width / 2),
429 y: Math.round((locpoint.y - gPos.y) / gZoomFactor + gMapCanvas.height / 2)};
431 undrawCurrentLocation();
433 // Cache overdrawn area.
436 radius: circleRadius,
437 data: gTrackContext.getImageData(mappos.x - circleRadius,
438 mappos.y - circleRadius,
439 circleRadius * 2, circleRadius * 2)};
441 gTrackContext.strokeStyle = gCurLocColor;
442 gTrackContext.fillStyle = gTrackContext.strokeStyle;
443 gTrackContext.beginPath();
444 gTrackContext.arc(mappos.x, mappos.y,
445 circleRadius, 0, Math.PI * 2, false);
446 gTrackContext.fill();
449 function undrawCurrentLocation() {
450 if (gCurPosMapCache) {
451 var oldpoint = gCurPosMapCache.point;
452 var oldmp = {x: Math.round((oldpoint.x - gPos.x) / gZoomFactor + gMapCanvas.width / 2),
453 y: Math.round((oldpoint.y - gPos.y) / gZoomFactor + gMapCanvas.height / 2)};
454 gTrackContext.putImageData(gCurPosMapCache.data,
455 oldmp.x - gCurPosMapCache.radius,
456 oldmp.y - gCurPosMapCache.radius);
457 gCurPosMapCache = undefined;
462 handleEvent: function(aEvent) {
463 var touchEvent = aEvent.type.indexOf('touch') != -1;
465 // Bail out if the event is happening on an input.
466 if (aEvent.target.tagName.toLowerCase() == "input")
469 // Bail out on unwanted map moves, but not zoom or keyboard events.
470 if (aEvent.type.indexOf("mouse") === 0 || aEvent.type.indexOf("touch") === 0) {
471 // Bail out if this is neither a touch nor left-click.
472 if (!touchEvent && aEvent.button != 0)
475 // Bail out if the started touch can't be found.
476 if (touchEvent && gDragging &&
477 !aEvent.changedTouches.identifiedTouch(gDragTouchID))
481 var coordObj = touchEvent ?
482 aEvent.changedTouches.identifiedTouch(gDragTouchID) :
485 switch (aEvent.type) {
489 if (aEvent.targetTouches.length == 2) {
490 gPinchStartWidth = Math.sqrt(
491 Math.pow(aEvent.targetTouches.item(1).clientX -
492 aEvent.targetTouches.item(0).clientX, 2) +
493 Math.pow(aEvent.targetTouches.item(1).clientY -
494 aEvent.targetTouches.item(0).clientY, 2)
497 gDragTouchID = aEvent.changedTouches.item(0).identifier;
498 coordObj = aEvent.changedTouches.identifiedTouch(gDragTouchID);
500 var x = coordObj.clientX - gMapCanvas.offsetLeft;
501 var y = coordObj.clientY - gMapCanvas.offsetTop;
503 if (touchEvent || aEvent.button === 0) {
512 if (touchEvent && aEvent.targetTouches.length == 2) {
513 curPinchStartWidth = Math.sqrt(
514 Math.pow(aEvent.targetTouches.item(1).clientX -
515 aEvent.targetTouches.item(0).clientX, 2) +
516 Math.pow(aEvent.targetTouches.item(1).clientY -
517 aEvent.targetTouches.item(0).clientY, 2)
519 if (!gPinchStartWidth)
520 gPinchStartWidth = curPinchStartWidth;
522 if (gPinchStartWidth / curPinchStartWidth > 1.7 ||
523 gPinchStartWidth / curPinchStartWidth < 0.6) {
524 var newZoomLevel = gPos.z + (gPinchStartWidth < curPinchStartWidth ? 1 : -1);
525 if ((newZoomLevel >= 0) && (newZoomLevel <= gMaxZoom)) {
526 // Calculate new center of the map - preserve middle of pinch.
527 // This means that pixel distance between old center and middle
528 // must equal pixel distance of new center and middle.
529 var x = (aEvent.targetTouches.item(1).clientX +
530 aEvent.targetTouches.item(0).clientX) / 2 -
531 gMapCanvas.offsetLeft;
532 var y = (aEvent.targetTouches.item(1).clientY +
533 aEvent.targetTouches.item(0).clientY) / 2 -
534 gMapCanvas.offsetTop;
536 // Zoom factor after this action.
537 var newZoomFactor = Math.pow(2, gMaxZoom - newZoomLevel);
538 gPos.x -= (x - gMapCanvas.width / 2) * (newZoomFactor - gZoomFactor);
539 gPos.y -= (y - gMapCanvas.height / 2) * (newZoomFactor - gZoomFactor);
541 if (gPinchStartWidth < curPinchStartWidth)
546 // Reset pinch start width and start another pinch gesture.
547 gPinchStartWidth = null;
550 // If we are in a pinch, do not drag.
553 var x = coordObj.clientX - gMapCanvas.offsetLeft;
554 var y = coordObj.clientY - gMapCanvas.offsetTop;
555 if (gDragging === true) {
556 var dX = x - gLastMouseX;
557 var dY = y - gLastMouseY;
558 gPos.x -= dX * gZoomFactor;
559 gPos.y -= dY * gZoomFactor;
560 if (true) { // use optimized path
561 var mapData = gMapContext.getImageData(0, 0,
564 gMapContext.clearRect(0, 0, gMapCanvas.width, gMapCanvas.height);
565 gMapContext.putImageData(mapData, dX, dY);
566 drawMap({left: (dX > 0) ? dX : 0,
567 right: (dX < 0) ? -dX : 0,
568 top: (dY > 0) ? dY : 0,
569 bottom: (dY < 0) ? -dY : 0});
572 drawMap(false, true);
581 gPinchStartWidth = null;
591 // If we'd want pixels, we'd need to calc up using aEvent.deltaMode.
592 // See https://developer.mozilla.org/en-US/docs/Mozilla_event_reference/wheel
594 // Only accept (non-null) deltaY values
598 // Debug output: "coordinates" of the point the mouse was over.
600 var ptCoord = {x: gPos.x + (x - gMapCanvas.width / 2) * gZoomFactor,
601 y: gPos.y + (x - gMapCanvas.height / 2) * gZoomFactor};
602 var gpsCoord = xy2gps(ptCoord.x, ptCoord.y);
603 var pt2Coord = gps2xy(gpsCoord.latitude, gpsCoord.longitude);
604 console.log(ptCoord.x + "/" + ptCoord.y + " - " +
605 gpsCoord.latitude + "/" + gpsCoord.longitude + " - " +
606 pt2Coord.x + "/" + pt2Coord.y);
609 var newZoomLevel = gPos.z + (aEvent.deltaY < 0 ? 1 : -1);
610 if ((newZoomLevel >= 0) && (newZoomLevel <= gMaxZoom)) {
611 // Calculate new center of the map - same point stays under the mouse.
612 // This means that the pixel distance between the old center and point
613 // must equal the pixel distance of the new center and that point.
614 var x = coordObj.clientX - gMapCanvas.offsetLeft;
615 var y = coordObj.clientY - gMapCanvas.offsetTop;
617 // Zoom factor after this action.
618 var newZoomFactor = Math.pow(2, gMaxZoom - newZoomLevel);
619 gPos.x -= (x - gMapCanvas.width / 2) * (newZoomFactor - gZoomFactor);
620 gPos.y -= (y - gMapCanvas.height / 2) * (newZoomFactor - gZoomFactor);
622 if (aEvent.deltaY < 0)
629 // Allow keyboard control to move and zoom the map.
630 // Should use aEvent.key instead of aEvent.which but needs bug 680830.
631 // See https://developer.mozilla.org/en-US/docs/DOM/Mozilla_event_reference/keydown
634 switch (aEvent.which) {
648 case 107: // + (numpad)
649 case 171: // + (normal key)
653 case 109: // - (numpad)
654 case 173: // - (normal key)
666 zoomTo(aEvent.which - 38);
671 case 96: // 0 (numpad)
672 case 97: // 1 (numpad)
673 case 98: // 2 (numpad)
674 case 99: // 3 (numpad)
675 case 100: // 4 (numpad)
676 case 101: // 5 (numpad)
677 case 102: // 6 (numpad)
678 case 103: // 7 (numpad)
679 case 104: // 8 (numpad)
680 zoomTo(aEvent.which - 86);
682 case 105: // 9 (numpad)
685 default: // not supported
686 console.log("key not supported: " + aEvent.which);
692 gPos.x -= dX * gZoomFactor;
693 gPos.y -= dY * gZoomFactor;
694 if (true) { // use optimized path
695 var mapData = gMapContext.getImageData(0, 0,
698 gMapContext.clearRect(0, 0, gMapCanvas.width, gMapCanvas.height);
699 gMapContext.putImageData(mapData, dX, dY);
700 drawMap({left: (dX > 0) ? dX : 0,
701 right: (dX < 0) ? -dX : 0,
702 top: (dY > 0) ? dY : 0,
703 bottom: (dY < 0) ? -dY : 0});
706 drawMap(false, true);
716 lastPos: {x: undefined, y: undefined},
717 watchPosition: function(aSuccessCallback, aErrorCallback, aPrefObject) {
718 this.tracking = true;
719 var watchCall = function() {
720 // calc new position in lat/lon degrees
721 // 90° on Earth surface are ~10,000 km at the equator,
722 // so try moving at most 10m at a time
723 if (geofake.lastPos.x)
724 geofake.lastPos.x += (Math.random() - .5) * 90 / 1000000
726 geofake.lastPos.x = 48.208174
727 if (geofake.lastPos.y)
728 geofake.lastPos.y += (Math.random() - .5) * 90 / 1000000
730 geofake.lastPos.y = 16.373819
731 aSuccessCallback({timestamp: Date.now(),
732 coords: {latitude: geofake.lastPos.x,
733 longitude: geofake.lastPos.y,
735 if (geofake.tracking)
736 setTimeout(watchCall, 1000);
738 setTimeout(watchCall, 1000);
741 clearWatch: function(aID) {
742 this.tracking = false;
746 function setCentering(aCheckbox) {
747 if (gMapPrefsLoaded && mainDB)
748 gPrefs.set("center_map", aCheckbox.checked);
749 gCenterPosition = aCheckbox.checked;
752 function setTracking(aCheckbox) {
753 if (gMapPrefsLoaded && mainDB)
754 gPrefs.set("tracking_enabled", aCheckbox.checked);
755 if (aCheckbox.checked)
761 function startTracking() {
763 gActionLabel.textContent = "Establishing Position";
764 gAction.style.display = "block";
765 gGeoWatchID = gGeolocation.watchPosition(
767 if (gActionLabel.textContent) {
768 gActionLabel.textContent = "";
769 gAction.style.display = "none";
771 // Coords spec: https://developer.mozilla.org/en/XPCOM_Interface_Reference/NsIDOMGeoPositionCoords
772 var tPoint = {time: position.timestamp,
773 coords: {latitude: position.coords.latitude,
774 longitude: position.coords.longitude,
775 altitude: position.coords.altitude,
776 accuracy: position.coords.accuracy,
777 altitudeAccuracy: position.coords.altitudeAccuracy,
778 heading: position.coords.heading,
779 speed: position.coords.speed},
780 beginSegment: !gLastTrackPoint};
781 // Only add point to track is accuracy is good enough.
782 if (tPoint.coords.accuracy < gMinTrackAccuracy) {
783 gLastTrackPoint = tPoint;
785 try { gTrackStore.push(tPoint); } catch(e) {}
787 if (gCenterPosition) {
788 var posCoord = gps2xy(position.coords.latitude,
789 position.coords.longitude);
790 if (Math.abs(gPos.x - posCoord.x) > gMapCanvas.width * gZoomFactor / 4 ||
791 Math.abs(gPos.y - posCoord.y) > gMapCanvas.height * gZoomFactor / 4) {
794 drawMap(); // This draws the current point as well.
799 undrawCurrentLocation();
800 drawTrackPoint(position.coords.latitude, position.coords.longitude, true);
802 drawCurrentLocation(tPoint);
805 // Ignore erros for the moment, but this is good for debugging.
806 // See https://developer.mozilla.org/en/Using_geolocation#Handling_errors
808 console.log(error.message);
810 {enableHighAccuracy: true}
815 function endTracking() {
816 if (gActionLabel.textContent) {
817 gActionLabel.textContent = "";
818 gAction.style.display = "none";
821 gGeolocation.clearWatch(gGeoWatchID);
825 function clearTrack() {
832 objStore: "tilecache",
834 ageLimit: 14 * 86400 * 1000, // 2 weeks (in ms)
836 get: function(aStyle, aCoords, aCallback) {
837 var norm = normalizeCoords(aCoords);
838 var dbkey = aStyle + "::" + norm.x + "," + norm.y + "," + norm.z;
839 this.getDBCache(dbkey, function(aResult, aEvent) {
841 // We did get a cached object.
842 aCallback(aResult.image, aStyle, aCoords);
843 // Look at the timestamp and return if it's not too old.
844 if (aResult.timestamp + gTileService.ageLimit > Date.now())
846 // Reload cached tile otherwise.
847 var oldDate = new Date(aResult.timestamp);
848 console.log("reload cached tile: " + dbkey + " - " + oldDate.toUTCString());
850 // Retrieve image from the web and store it in the cache.
851 var XHR = new XMLHttpRequest();
853 gMapStyles[aStyle].url
854 .replace("{x}", norm.x)
855 .replace("{y}", norm.y)
856 .replace("{z}", norm.z)
857 .replace("[a-c]", String.fromCharCode(97 + Math.floor(Math.random() * 2)))
858 .replace("[1-4]", 1 + Math.floor(Math.random() * 3)),
860 XHR.responseType = "blob";
861 XHR.addEventListener("load", function () {
862 if (XHR.status === 200) {
863 var blob = XHR.response;
864 aCallback(blob, aStyle, aCoords);
865 gTileService.setDBCache(dbkey, {image: blob, timestamp: Date.now()});
872 getDBCache: function(aKey, aCallback) {
875 var transaction = mainDB.transaction([this.objStore]);
876 var request = transaction.objectStore(this.objStore).get(aKey);
877 request.onsuccess = function(event) {
878 aCallback(request.result, event);
880 request.onerror = function(event) {
881 // Errors can be handled here.
882 aCallback(undefined, event);
886 setDBCache: function(aKey, aValue, aCallback) {
890 var transaction = mainDB.transaction([this.objStore], "readwrite");
891 var objStore = transaction.objectStore(this.objStore);
892 var request = objStore.put(aValue, aKey);
893 request.onsuccess = function(event) {
896 aCallback(success, event);
898 request.onerror = function(event) {
899 // Errors can be handled here.
901 aCallback(success, event);
905 unsetDBCache: function(aKey, aCallback) {
909 var transaction = mainDB.transaction([this.objStore], "readwrite");
910 var request = transaction.objectStore(this.objStore).delete(aKey);
911 request.onsuccess = function(event) {
914 aCallback(success, event);
916 request.onerror = function(event) {
917 // Errors can be handled here.
919 aCallback(success, event);
923 clearDB: function(aCallback) {
927 var transaction = mainDB.transaction([this.objStore], "readwrite");
928 var request = transaction.objectStore(this.objStore).clear();
929 request.onsuccess = function(event) {
932 aCallback(success, event);
934 request.onerror = function(event) {
935 // Errors can be handled here.
937 aCallback(success, event);