315c42f0a7
sed command used: find src/ol -name '*.js' -exec sed -ri 's/\{ol(\.(\w|\.)+Options\=?\})/{olx\1/' \{\} \;
121 lines
2.9 KiB
JavaScript
121 lines
2.9 KiB
JavaScript
// FIXME add some error checking
|
|
// FIXME check order of async callbacks
|
|
|
|
/**
|
|
* @see http://mapbox.com/developers/api/
|
|
*/
|
|
|
|
goog.provide('ol.source.TileJSON');
|
|
goog.provide('ol.tilejson');
|
|
|
|
goog.require('goog.asserts');
|
|
goog.require('goog.net.jsloader');
|
|
goog.require('ol.Attribution');
|
|
goog.require('ol.TileRange');
|
|
goog.require('ol.TileUrlFunction');
|
|
goog.require('ol.extent');
|
|
goog.require('ol.proj');
|
|
goog.require('ol.source.State');
|
|
goog.require('ol.source.TileImage');
|
|
goog.require('ol.tilegrid.XYZ');
|
|
|
|
|
|
/**
|
|
* @private
|
|
* @type {Array.<TileJSON>}
|
|
*/
|
|
ol.tilejson.grids_ = [];
|
|
|
|
|
|
/**
|
|
* @param {TileJSON} tileJSON Tile JSON.
|
|
*/
|
|
var grid = function(tileJSON) {
|
|
ol.tilejson.grids_.push(tileJSON);
|
|
};
|
|
goog.exportSymbol('grid', grid);
|
|
|
|
|
|
|
|
/**
|
|
* @constructor
|
|
* @extends {ol.source.TileImage}
|
|
* @param {olx.source.TileJSONOptions} options TileJSON options.
|
|
* @todo stability experimental
|
|
*/
|
|
ol.source.TileJSON = function(options) {
|
|
|
|
goog.base(this, {
|
|
crossOrigin: options.crossOrigin,
|
|
projection: ol.proj.get('EPSG:3857'),
|
|
state: ol.source.State.LOADING,
|
|
tileLoadFunction: options.tileLoadFunction
|
|
});
|
|
|
|
/**
|
|
* @private
|
|
* @type {!goog.async.Deferred}
|
|
*/
|
|
this.deferred_ = goog.net.jsloader.load(options.url, {cleanupWhenDone: true});
|
|
this.deferred_.addCallback(this.handleTileJSONResponse, this);
|
|
|
|
};
|
|
goog.inherits(ol.source.TileJSON, ol.source.TileImage);
|
|
|
|
|
|
/**
|
|
* @protected
|
|
*/
|
|
ol.source.TileJSON.prototype.handleTileJSONResponse = function() {
|
|
var tileJSON = ol.tilejson.grids_.pop();
|
|
|
|
var epsg4326Projection = ol.proj.get('EPSG:4326');
|
|
|
|
var extent;
|
|
if (goog.isDef(tileJSON.bounds)) {
|
|
var transform = ol.proj.getTransformFromProjections(
|
|
epsg4326Projection, this.getProjection());
|
|
extent = ol.extent.transform(tileJSON.bounds, transform);
|
|
this.setExtent(extent);
|
|
}
|
|
|
|
if (goog.isDef(tileJSON.scheme)) {
|
|
goog.asserts.assert(tileJSON.scheme == 'xyz');
|
|
}
|
|
var minZoom = tileJSON.minzoom || 0;
|
|
var maxZoom = tileJSON.maxzoom || 22;
|
|
var tileGrid = new ol.tilegrid.XYZ({
|
|
maxZoom: maxZoom,
|
|
minZoom: minZoom
|
|
});
|
|
this.tileGrid = tileGrid;
|
|
|
|
this.tileUrlFunction = ol.TileUrlFunction.withTileCoordTransform(
|
|
tileGrid.createTileCoordTransform({
|
|
extent: extent
|
|
}),
|
|
ol.TileUrlFunction.createFromTemplates(tileJSON.tiles));
|
|
|
|
if (goog.isDef(tileJSON.attribution)) {
|
|
var attributionExtent = goog.isDef(extent) ?
|
|
extent : epsg4326Projection.getExtent();
|
|
/** @type {Object.<string, Array.<ol.TileRange>>} */
|
|
var tileRanges = {};
|
|
var z, zKey;
|
|
for (z = minZoom; z <= maxZoom; ++z) {
|
|
zKey = z.toString();
|
|
tileRanges[zKey] =
|
|
[tileGrid.getTileRangeForExtentAndZ(attributionExtent, z)];
|
|
}
|
|
this.setAttributions([
|
|
new ol.Attribution({
|
|
html: tileJSON.attribution,
|
|
tileRanges: tileRanges
|
|
})
|
|
]);
|
|
}
|
|
|
|
this.setState(ol.source.State.READY);
|
|
|
|
};
|