gTrackCanvas.addEventListener("touchcancel", mapEvHandler, false);
gTrackCanvas.addEventListener("touchleave", mapEvHandler, false);
- // XXX deprecated? see https://groups.google.com/forum/?fromgroups#!topic/mozilla.dev.planning/kuhrORubaRY[1-25]
- gTrackCanvas.addEventListener("DOMMouseScroll", mapEvHandler, false);
- gTrackCanvas.addEventListener("mousewheel", mapEvHandler, false);
+ gTrackCanvas.addEventListener("wheel", mapEvHandler, false);
+
+ document.getElementById("body").addEventListener("keydown", mapEvHandler, false);
document.getElementById("copyright").innerHTML =
gMapStyles[gActiveMap].copyright;
}
}
+function zoomTo(aTargetLevel) {
+ aTargetLevel = parseInt(aTargetLevel);
+ if (aTargetLevel >= 0 && aTargetLevel <= gMaxZoom) {
+ gPos.z = aTargetLevel;
+ drawMap();
+ }
+}
+
function gps2xy(aLatitude, aLongitude) {
var maxZoomFactor = Math.pow(2, gMaxZoom) * gTileSize;
var convLat = aLatitude * Math.PI / 180;
handleEvent: function(aEvent) {
var touchEvent = aEvent.type.indexOf('touch') != -1;
- // Bail out on unwanted map moves, but not zoom-changing events.
- if (aEvent.type != "DOMMouseScroll" && aEvent.type != "mousewheel") {
+ // Bail out on unwanted map moves, but not zoom or keyboard events.
+ if (aEvent.type.indexOf("mouse") === 0 || aEvent.type.indexOf("touch") === 0) {
// Bail out if this is neither a touch nor left-click.
if (!touchEvent && aEvent.button != 0)
return;
var dY = y - gLastMouseY;
gPos.x -= dX * gZoomFactor;
gPos.y -= dY * gZoomFactor;
- var mapData = gMapContext.getImageData(0, 0, gMapCanvas.width, gMapCanvas.height);
- gMapContext.clearRect(0, 0, gMapCanvas.width, gMapCanvas.height);
- gMapContext.putImageData(mapData, dX, dY);
- drawMap({left: (dX > 0) ? dX : 0,
- right: (dX < 0) ? -dX : 0,
- top: (dY > 0) ? dY : 0,
- bottom: (dY < 0) ? -dY : 0});
+ if (true) { // use optimized path
+ var mapData = gMapContext.getImageData(0, 0,
+ gMapCanvas.width,
+ gMapCanvas.height);
+ gMapContext.clearRect(0, 0, gMapCanvas.width, gMapCanvas.height);
+ gMapContext.putImageData(mapData, dX, dY);
+ drawMap({left: (dX > 0) ? dX : 0,
+ right: (dX < 0) ? -dX : 0,
+ top: (dY > 0) ? dY : 0,
+ bottom: (dY < 0) ? -dY : 0});
+ }
+ else {
+ drawMap(false, true);
+ }
showUI();
}
gLastMouseX = x;
case "touchleave":
//gDragging = false;
break;
- case "DOMMouseScroll":
- case "mousewheel":
- var delta = 0;
- if (aEvent.wheelDelta) {
- delta = aEvent.wheelDelta / 120;
- if (window.opera)
- delta = -delta;
- }
- else if (aEvent.detail) {
- delta = -aEvent.detail / 3;
- }
+ case "wheel":
+ // If we'd want pixels, we'd need to calc up using aEvent.deltaMode.
+ // See https://developer.mozilla.org/en-US/docs/Mozilla_event_reference/wheel
+
+ // Only accept (non-null) deltaY values
+ if (!aEvent.deltaY)
+ break;
// Debug output: "coordinates" of the point the mouse was over.
/*
pt2Coord.x + "/" + pt2Coord.y);
*/
- var newZoomLevel = gPos.z + (delta > 0 ? 1 : -1);
+ var newZoomLevel = gPos.z + (aEvent.deltaY < 0 ? 1 : -1);
if ((newZoomLevel >= 0) && (newZoomLevel <= gMaxZoom)) {
// Calculate new center of the map - same point stays under the mouse.
// This means that the pixel distance between the old center and point
gPos.x -= (x - gMapCanvas.width / 2) * (newZoomFactor - gZoomFactor);
gPos.y -= (y - gMapCanvas.height / 2) * (newZoomFactor - gZoomFactor);
- if (delta > 0)
+ if (aEvent.deltaY < 0)
zoomIn();
- else if (delta < 0)
+ else
zoomOut();
}
break;
+ case "keydown":
+ // Allow keyboard control to move and zoom the map.
+ // Should use aEvent.key instead of aEvent.which but needs bug 680830.
+ // See https://developer.mozilla.org/en-US/docs/DOM/Mozilla_event_reference/keydown
+ var dX = 0;
+ var dY = 0;
+ switch (aEvent.which) {
+ case 39: // right
+ dX = -gTileSize / 2;
+ break;
+ case 37: // left
+ dX = gTileSize / 2;
+ break;
+ case 38: // up
+ dY = gTileSize / 2;
+ break;
+ case 40: // down
+ dY = -gTileSize / 2;
+ break;
+ case 87: // w
+ case 107: // + (numpad)
+ case 171: // + (normal key)
+ zoomIn();
+ break;
+ case 83: // s
+ case 109: // - (numpad)
+ case 173: // - (normal key)
+ zoomOut();
+ break;
+ case 48: // 0
+ case 49: // 1
+ case 50: // 2
+ case 51: // 3
+ case 52: // 4
+ case 53: // 5
+ case 54: // 6
+ case 55: // 7
+ case 56: // 8
+ zoomTo(aEvent.which - 38);
+ break;
+ case 57: // 9
+ zoomTo(9);
+ break;
+ case 96: // 0 (numpad)
+ case 97: // 1 (numpad)
+ case 98: // 2 (numpad)
+ case 99: // 3 (numpad)
+ case 100: // 4 (numpad)
+ case 101: // 5 (numpad)
+ case 102: // 6 (numpad)
+ case 103: // 7 (numpad)
+ case 104: // 8 (numpad)
+ zoomTo(aEvent.which - 86);
+ break;
+ case 105: // 9 (numpad)
+ zoomTo(9);
+ break;
+ default: // not supported
+ console.log("key not supported: " + aEvent.which);
+ break;
+ }
+
+ // Move if needed.
+ if (dX || dY) {
+ gPos.x -= dX * gZoomFactor;
+ gPos.y -= dY * gZoomFactor;
+ if (true) { // use optimized path
+ var mapData = gMapContext.getImageData(0, 0,
+ gMapCanvas.width,
+ gMapCanvas.height);
+ gMapContext.clearRect(0, 0, gMapCanvas.width, gMapCanvas.height);
+ gMapContext.putImageData(mapData, dX, dY);
+ drawMap({left: (dX > 0) ? dX : 0,
+ right: (dX < 0) ? -dX : 0,
+ top: (dY > 0) ? dY : 0,
+ bottom: (dY < 0) ? -dY : 0});
+ }
+ else {
+ drawMap(false, true);
+ }
+ }
+ break;
}
}
};
function clearTrack() {
gTrack = [];
gTrackStore.clear();
- drawMap();
+ drawMap({left: 0, right: 0, top: 0, bottom: 0});
}
var gTileService = {
objStore: "tilecache",
+ ageLimit: 14 * 86400 * 1000, // 2 weeks (in ms)
+
get: function(aStyle, aCoords, aCallback) {
var norm = normalizeCoords(aCoords);
var dbkey = aStyle + "::" + norm.x + "," + norm.y + "," + norm.z;
this.getDBCache(dbkey, function(aResult, aEvent) {
if (aResult) {
// We did get a cached object.
- // TODO: Look at the timestamp and trigger a reload when it's too old.
aCallback(aResult.image, aStyle, aCoords);
+ // Look at the timestamp and return if it's not too old.
+ if (aResult.timestamp + gTileService.ageLimit > Date.now())
+ return;
+ // Reload cached tile otherwise.
+ var oldDate = new Date(aResult.timestamp);
+ console.log("reload cached tile: " + dbkey + " - " + oldDate.toUTCString());
}
- else {
- // Retrieve image from the web and store it in the cache.
- var XHR = new XMLHttpRequest();
- XHR.open("GET",
- gMapStyles[aStyle].url
- .replace("{x}", norm.x)
- .replace("{y}", norm.y)
- .replace("{z}", norm.z)
- .replace("[a-c]", String.fromCharCode(97 + Math.floor(Math.random() * 2)))
- .replace("[1-4]", 1 + Math.floor(Math.random() * 3)),
- true);
- XHR.responseType = "blob";
- XHR.addEventListener("load", function () {
- if (XHR.status === 200) {
- var blob = XHR.response;
- gTileService.setDBCache(dbkey, {image: blob, timestamp: Date.now()});
- aCallback(blob, aStyle, aCoords);
- }
- }, false);
- XHR.send();
- }
+ // Retrieve image from the web and store it in the cache.
+ var XHR = new XMLHttpRequest();
+ XHR.open("GET",
+ gMapStyles[aStyle].url
+ .replace("{x}", norm.x)
+ .replace("{y}", norm.y)
+ .replace("{z}", norm.z)
+ .replace("[a-c]", String.fromCharCode(97 + Math.floor(Math.random() * 2)))
+ .replace("[1-4]", 1 + Math.floor(Math.random() * 3)),
+ true);
+ XHR.responseType = "blob";
+ XHR.addEventListener("load", function () {
+ if (XHR.status === 200) {
+ var blob = XHR.response;
+ aCallback(blob, aStyle, aCoords);
+ gTileService.setDBCache(dbkey, {image: blob, timestamp: Date.now()});
+ }
+ }, false);
+ XHR.send();
});
},
if (aCallback)
aCallback(success, event);
}
+ },
+
+ clearDB: function(aCallback) {
+ if (!mainDB)
+ return;
+ var success = false;
+ var transaction = mainDB.transaction([this.objStore], "readwrite");
+ var request = transaction.objectStore(this.objStore).clear();
+ request.onsuccess = function(event) {
+ success = true;
+ if (aCallback)
+ aCallback(success, event);
+ };
+ request.onerror = function(event) {
+ // Errors can be handled here.
+ if (aCallback)
+ aCallback(success, event);
+ }
}
};