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easy async loading for GridLayer

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This commit is contained in:
Vladimir Agafonkin 2013-11-25 19:13:30 +02:00
parent e8c504b5f9
commit 8f97ca619e
2 changed files with 15 additions and 9 deletions
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9
debug/map/grid.html
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@ -23,10 +23,17 @@
attribution: 'Grid Layer'
});
grid.createTile = function (coords) {
grid.createTile = function (coords, done) {
var tile = document.createElement('div');
tile.innerHTML = [coords.x, coords.y, coords.z].join(',');
tile.style.outline = '1px solid red';
tile.style.background = 'white';
// test async
setTimeout(function () {
done(tile);
}, Math.random() * 500);
return tile;
};

15
src/layer/tile/GridLayer.js
View File

@ -13,7 +13,6 @@ L.GridLayer = L.Class.extend({
// minZoom: <Number>,
// maxZoom: <Number>,
async: false,
unloadInvisibleTiles: L.Browser.mobile,
updateWhenIdle: L.Browser.mobile,
updateInterval: 150
@ -21,6 +20,9 @@ L.GridLayer = L.Class.extend({
initialize: function (options) {
options = L.setOptions(this, options);
// make sure it can be passed safely without losing context
this._tileReady = L.bind(this._tileReady, this);
},
onAdd: function (map) {
@ -384,8 +386,8 @@ L.GridLayer = L.Class.extend({
this._initTile(tile);
if (this.createTile.length < 2) {
this._tileReady(tile);
// TODO pass tileReady to createTile for async
// if tiles are sync, delay one frame for opacity anim to happen
setTimeout(L.bind(this._tileReady, this, tile), 0);
}
var tilePos = this._getTilePos(coords);
@ -421,11 +423,8 @@ L.GridLayer = L.Class.extend({
if (this._animated) {
// clear scaled tiles after all new tiles are loaded (for performance)
this._clearBgBuffer();
// TODO find out why timeout was needed
// clearTimeout(this._clearBgBufferTimer);
// this._clearBgBufferTimer = setTimeout(L.bind(this._clearBgBuffer, this), 500);
clearTimeout(this._clearBgBufferTimer);
this._clearBgBufferTimer = setTimeout(L.bind(this._clearBgBuffer, this), 300);
}
},