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Handle Leaflet freak-out on removed layers during tile load, clean up panning

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This commit is contained in:
Mike Primm 2011-08-03 21:14:15 -05:00
parent 7ba9636235
commit 8747861d96
2 changed files with 56 additions and 13 deletions
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31
web/js/dynmaputils.js
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@ -45,9 +45,40 @@ var DynmapTileLayer = L.TileLayer.extend({
updateTile: function(tile) {
this._loadTile(tile, tile.tilePoint, this._map.getZoom());
},
// Override to fix loads completing after layer removed
_addTilesFromCenterOut: function(bounds) {
if(this._container == null) // Ignore if we've stopped being active layer
return;
var queue = [],
center = bounds.getCenter();
for (var j = bounds.min.y; j <= bounds.max.y; j++) {
for (var i = bounds.min.x; i <= bounds.max.x; i++) {
if ((i + ':' + j) in this._tiles) { continue; }
queue.push(new L.Point(i, j));
}
}
// load tiles in order of their distance to center
queue.sort(function(a, b) {
return a.distanceTo(center) - b.distanceTo(center);
});
var fragment = document.createDocumentFragment();
this._tilesToLoad = queue.length;
for (var k = 0, len = this._tilesToLoad; k < len; k++) {
this._addTile(queue[k], fragment);
}
this._container.appendChild(fragment);
},
// We should override this, since Leaflet does modulo on tilePoint by default. (https://github.com/CloudMade/Leaflet/blob/master/src/layer/tile/TileLayer.js#L151)
_addTile: function(tilePoint) {
if(this._container == null) // Ignore if we're not active layer
return;
var tilePos = this._getTilePos(tilePoint),
zoom = this._map.getZoom(),
key = tilePoint.x + ':' + tilePoint.y,