Add ol.source.ImageArcGISRest (#3880)
* Add ol.source.ImageArcGISRest ol.source.ImageArcGISRest is added so a single image can be retrieved which is required when labelling is applied to the underlying map service. it's based on the approach used in ol.source.ImageWMS * updating to remove as many good references as possible changing so js passes lint checks * fixing up so build and tests run * putting back what was lost in the merge * adding in an example tidying up
This commit is contained in:
Anna Lambrechtsen
committed by
Andreas Hocevar
Andreas Hocevar
parent
0e4692e69e
commit
18a29ea6d3
11
examples/arcgis-image.html
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11
examples/arcgis-image.html
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---
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layout: example.html
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title: Image ArcGIS MapServer
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shortdesc: Example of an image ArcGIS layer.
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docs: >
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This example shows how to use a dynamic ArcGIS REST MapService.
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This source type supports Map and Image Services. For dyamic ArcGIS
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services.
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tags: arcgis, image, dynamiclayer"
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---
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<div id="map" class="map"></div>
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examples/arcgis-image.js
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29
examples/arcgis-image.js
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goog.require('ol.Map');
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goog.require('ol.View');
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goog.require('ol.layer.Tile');
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goog.require('ol.layer.Image');
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goog.require('ol.source.MapQuest');
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goog.require('ol.source.ImageArcGISRest');
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var url = 'http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/' +
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'Specialty/ESRI_StateCityHighway_USA/MapServer';
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var layers = [
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new ol.layer.Tile({
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source: new ol.source.MapQuest({layer: 'sat'})
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}),
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new ol.layer.Image({
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source: new ol.source.ImageArcGISRest({
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params: {},
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url: url
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})
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})
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];
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var map = new ol.Map({
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layers: layers,
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target: 'map',
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view: new ol.View({
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center: [-10997148, 4569099],
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zoom: 4
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})
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});
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101
externs/olx.js
101
externs/olx.js
@@ -3094,7 +3094,6 @@ olx.interaction.SelectOptions.prototype.toggleCondition;
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*/
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*/
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olx.interaction.SelectOptions.prototype.multi;
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olx.interaction.SelectOptions.prototype.multi;
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/**
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/**
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* Collection where the interaction will place selected features. Optional. If
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* Collection where the interaction will place selected features. Optional. If
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* not set the interaction will create a collection. In any case the collection
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* not set the interaction will create a collection. In any case the collection
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@@ -3105,7 +3104,6 @@ olx.interaction.SelectOptions.prototype.multi;
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*/
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*/
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olx.interaction.SelectOptions.prototype.features;
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olx.interaction.SelectOptions.prototype.features;
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/**
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/**
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* A function that takes an {@link ol.Feature} and an {@link ol.layer.Layer} and
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* A function that takes an {@link ol.Feature} and an {@link ol.layer.Layer} and
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* returns `true` if the feature may be selected or `false` otherwise.
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* returns `true` if the feature may be selected or `false` otherwise.
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@@ -4808,6 +4806,105 @@ olx.source.OSMOptions.prototype.url;
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olx.source.OSMOptions.prototype.wrapX;
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olx.source.OSMOptions.prototype.wrapX;
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/**
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* @typedef {{attributions: (Array.<ol.Attribution>|undefined),
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* crossOrigin: (null|string|undefined),
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* logo: (string|olx.LogoOptions|undefined),
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* imageLoadFunction: (ol.ImageLoadFunctionType|undefined),
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* params: Object.<string,*>,
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* projection: ol.proj.ProjectionLike,
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* ratio: (number|undefined),
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* resolutions: (Array.<number>|undefined),
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* url: (string|undefined)}}
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* @api
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*/
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olx.source.ImageArcGISRestOptions;
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/**
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* Attributions.
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* @type {Array.<ol.Attribution>|undefined}
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* @api
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*/
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olx.source.ImageArcGISRestOptions.prototype.attributions;
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/**
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* The `crossOrigin` attribute for loaded images. Note that you must provide a
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* `crossOrigin` value if you are using the WebGL renderer or if you want to
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* access pixel data with the Canvas renderer. See
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* {@link https://developer.mozilla.org/en-US/docs/Web/HTML/CORS_enabled_image}
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* for more detail.
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* @type {null|string|undefined}
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* @api
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*/
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olx.source.ImageArcGISRestOptions.prototype.crossOrigin;
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/**
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* Logo.
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* @type {string|olx.LogoOptions|undefined}
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* @api
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*/
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olx.source.ImageArcGISRestOptions.prototype.logo;
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/**
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* Optional function to load an image given a URL.
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* @type {ol.ImageLoadFunctionType|undefined}
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* @api
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*/
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olx.source.ImageArcGISRestOptions.prototype.imageLoadFunction;
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/**
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* ArcGIS Rest parameters. This field is optional. Service defaults will be
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* used for any fields not specified. `FORMAT` is `PNG32` by default. `F` is `IMAGE` by
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* default. `TRANSPARENT` is `true` by default. `BBOX, `SIZE`, `BBOXSR`,
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* and `IMAGESR` will be set dynamically. Set `LAYERS` to
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* override the default service layer visibility. See
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* {@link http://resources.arcgis.com/en/help/arcgis-rest-api/index.html#/Export_Map/02r3000000v7000000/}
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* for further reference.
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* @type {Object.<string,*>|undefined}
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* @api
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*/
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olx.source.ImageArcGISRestOptions.prototype.params;
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/**
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* Projection.
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* @type {ol.proj.ProjectionLike}
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* @api
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*/
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olx.source.ImageArcGISRestOptions.prototype.projection;
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/**
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* Ratio. `1` means image requests are the size of the map viewport, `2` means
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* twice the size of the map viewport, and so on. Default is `1.5`.
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* @type {number|undefined}
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* @api
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*/
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olx.source.ImageArcGISRestOptions.prototype.ratio;
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/**
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* Resolutions. If specified, requests will be made for these resolutions only.
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* @type {Array.<number>|undefined}
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* @api
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*/
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olx.source.ImageArcGISRestOptions.prototype.resolutions;
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/**
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* ArcGIS Rest service URL for a Map Service or Image Service. The
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* url should include /MapServer or /ImageServer.
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* @type {string|undefined}
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* @api
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*/
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olx.source.ImageArcGISRestOptions.prototype.url;
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/**
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/**
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* @typedef {{attributions: (ol.AttributionLike|undefined),
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* @typedef {{attributions: (ol.AttributionLike|undefined),
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* canvasFunction: ol.CanvasFunctionType,
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* canvasFunction: ol.CanvasFunctionType,
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268
src/ol/source/imagearcgisrestsource.js
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268
src/ol/source/imagearcgisrestsource.js
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goog.provide('ol.source.ImageArcGISRest');
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goog.require('goog.asserts');
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goog.require('goog.uri.utils');
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goog.require('ol');
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goog.require('ol.Image');
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goog.require('ol.ImageLoadFunctionType');
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goog.require('ol.events');
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goog.require('ol.events.EventType');
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goog.require('ol.extent');
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goog.require('ol.object');
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goog.require('ol.proj');
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goog.require('ol.source.Image');
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/**
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* @classdesc
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* Source for data from ArcGIS Rest services providing single, untiled images.
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* Useful when underlying map service has labels.
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*
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* If underlying map service is not using labels,
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* take advantage of ol image caching and use
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* {@link ol.source.TileArcGISRest} data source.
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*
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* @constructor
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* @fires ol.source.ImageEvent
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* @extends {ol.source.Image}
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* @param {olx.source.ImageArcGISRestOptions=} opt_options Image ArcGIS Rest Options.
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* @api
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*/
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ol.source.ImageArcGISRest = function(opt_options) {
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var options = opt_options || {};
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goog.base(this, {
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attributions: options.attributions,
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logo: options.logo,
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projection: options.projection,
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resolutions: options.resolutions
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});
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/**
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* @private
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* @type {?string}
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*/
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this.crossOrigin_ =
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options.crossOrigin !== undefined ? options.crossOrigin : null;
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/**
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* @private
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* @type {string|undefined}
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*/
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this.url_ = options.url;
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/**
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* @private
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* @type {ol.ImageLoadFunctionType}
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*/
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this.imageLoadFunction_ = options.imageLoadFunction !== undefined ?
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options.imageLoadFunction : ol.source.Image.defaultImageLoadFunction;
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/**
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* @private
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* @type {!Object}
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*/
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this.params_ = options.params || {};
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/**
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* @private
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* @type {ol.Image}
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*/
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this.image_ = null;
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/**
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* @private
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* @type {ol.Size}
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*/
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this.imageSize_ = [0, 0];
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/**
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* @private
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* @type {number}
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*/
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this.renderedRevision_ = 0;
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/**
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* @private
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* @type {number}
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*/
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this.ratio_ = options.ratio !== undefined ? options.ratio : 1.5;
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};
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goog.inherits(ol.source.ImageArcGISRest, ol.source.Image);
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/**
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* Get the user-provided params, i.e. those passed to the constructor through
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* the "params" option, and possibly updated using the updateParams method.
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* @return {Object} Params.
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* @api stable
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*/
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ol.source.ImageArcGISRest.prototype.getParams = function() {
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return this.params_;
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};
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/**
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* @inheritDoc
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*/
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ol.source.ImageArcGISRest.prototype.getImageInternal = function(extent, resolution, pixelRatio, projection) {
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if (this.url_ === undefined) {
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return null;
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}
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resolution = this.findNearestResolution(resolution);
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var image = this.image_;
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if (image &&
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this.renderedRevision_ == this.getRevision() &&
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image.getResolution() == resolution &&
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image.getPixelRatio() == pixelRatio &&
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ol.extent.containsExtent(image.getExtent(), extent)) {
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return image;
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}
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var params = {
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'F': 'image',
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'FORMAT': 'PNG32',
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'TRANSPARENT': true
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};
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ol.object.assign(params, this.params_);
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extent = extent.slice();
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var centerX = (extent[0] + extent[2]) / 2;
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var centerY = (extent[1] + extent[3]) / 2;
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if (this.ratio_ != 1) {
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var halfWidth = this.ratio_ * ol.extent.getWidth(extent) / 2;
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var halfHeight = this.ratio_ * ol.extent.getHeight(extent) / 2;
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extent[0] = centerX - halfWidth;
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extent[1] = centerY - halfHeight;
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extent[2] = centerX + halfWidth;
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extent[3] = centerY + halfHeight;
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}
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var imageResolution = resolution / pixelRatio;
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// Compute an integer width and height.
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var width = Math.ceil(ol.extent.getWidth(extent) / imageResolution);
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var height = Math.ceil(ol.extent.getHeight(extent) / imageResolution);
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// Modify the extent to match the integer width and height.
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extent[0] = centerX - imageResolution * width / 2;
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extent[2] = centerX + imageResolution * width / 2;
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extent[1] = centerY - imageResolution * height / 2;
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extent[3] = centerY + imageResolution * height / 2;
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this.imageSize_[0] = width;
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this.imageSize_[1] = height;
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var url = this.getRequestUrl_(extent, this.imageSize_, pixelRatio,
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projection, params);
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this.image_ = new ol.Image(extent, resolution, pixelRatio,
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this.getAttributions(), url, this.crossOrigin_, this.imageLoadFunction_);
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this.renderedRevision_ = this.getRevision();
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ol.events.listen(this.image_, ol.events.EventType.CHANGE,
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this.handleImageChange, this);
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return this.image_;
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};
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/**
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* Return the image load function of the source.
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* @return {ol.ImageLoadFunctionType} The image load function.
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* @api
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*/
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ol.source.ImageArcGISRest.prototype.getImageLoadFunction = function() {
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return this.imageLoadFunction_;
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};
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/**
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* @param {ol.Extent} extent Extent.
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* @param {ol.Size} size Size.
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* @param {number} pixelRatio Pixel ratio.
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* @param {ol.proj.Projection} projection Projection.
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* @param {Object} params Params.
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* @return {string} Request URL.
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* @private
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*/
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ol.source.ImageArcGISRest.prototype.getRequestUrl_ = function(extent, size, pixelRatio, projection, params) {
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goog.asserts.assert(this.url_ !== undefined, 'url is defined');
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// ArcGIS Server only wants the numeric portion of the projection ID.
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var srid = projection.getCode().split(':').pop();
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params['SIZE'] = size[0] + ',' + size[1];
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params['BBOX'] = extent.join(',');
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params['BBOXSR'] = srid;
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params['IMAGESR'] = srid;
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params['DPI'] = 90 * pixelRatio;
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var url = this.url_;
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var modifiedUrl = url
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.replace(/MapServer\/?$/, 'MapServer/export')
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.replace(/ImageServer\/?$/, 'ImageServer/exportImage');
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if (modifiedUrl == url) {
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goog.asserts.fail('Unknown Rest Service', url);
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}
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return goog.uri.utils.appendParamsFromMap(modifiedUrl, params);
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};
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/**
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||||||
|
* Return the URL used for this ArcGIS source.
|
||||||
|
* @return {string|undefined} URL.
|
||||||
|
* @api stable
|
||||||
|
*/
|
||||||
|
ol.source.ImageArcGISRest.prototype.getUrl = function() {
|
||||||
|
return this.url_;
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Set the image load function of the source.
|
||||||
|
* @param {ol.ImageLoadFunctionType} imageLoadFunction Image load function.
|
||||||
|
* @api
|
||||||
|
*/
|
||||||
|
ol.source.ImageArcGISRest.prototype.setImageLoadFunction = function(imageLoadFunction) {
|
||||||
|
this.image_ = null;
|
||||||
|
this.imageLoadFunction_ = imageLoadFunction;
|
||||||
|
this.changed();
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Set the URL to use for requests.
|
||||||
|
* @param {string|undefined} url URL.
|
||||||
|
* @api stable
|
||||||
|
*/
|
||||||
|
ol.source.ImageArcGISRest.prototype.setUrl = function(url) {
|
||||||
|
if (url != this.url_) {
|
||||||
|
this.url_ = url;
|
||||||
|
this.image_ = null;
|
||||||
|
this.changed();
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Update the user-provided params.
|
||||||
|
* @param {Object} params Params.
|
||||||
|
* @api stable
|
||||||
|
*/
|
||||||
|
ol.source.ImageArcGISRest.prototype.updateParams = function(params) {
|
||||||
|
ol.object.assign(this.params_, params);
|
||||||
|
this.image_ = null;
|
||||||
|
this.changed();
|
||||||
|
};
|
||||||
188
test/spec/ol/source/imagearcgisrestsource.test.js
Normal file
188
test/spec/ol/source/imagearcgisrestsource.test.js
Normal file
@@ -0,0 +1,188 @@
|
|||||||
|
goog.provide('ol.test.source.ImageArcGISRest');
|
||||||
|
|
||||||
|
|
||||||
|
describe('ol.source.ImageArcGISRest', function() {
|
||||||
|
|
||||||
|
var pixelRatio, options, projection, proj3857, resolution;
|
||||||
|
beforeEach(function() {
|
||||||
|
pixelRatio = 1;
|
||||||
|
projection = ol.proj.get('EPSG:4326');
|
||||||
|
proj3857 = ol.proj.get('EPSG:3857');
|
||||||
|
resolution = 0.1;
|
||||||
|
options = {
|
||||||
|
params: {},
|
||||||
|
url: 'http://example.com/MapServer'
|
||||||
|
};
|
||||||
|
});
|
||||||
|
|
||||||
|
describe('#getImage', function() {
|
||||||
|
|
||||||
|
it('returns a image with the expected URL', function() {
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
var image = source.getImage([3, 2, -7, 1], resolution, pixelRatio, proj3857);
|
||||||
|
var uri = new goog.Uri(image.src_);
|
||||||
|
expect(uri.getScheme()).to.be('http');
|
||||||
|
expect(uri.getDomain()).to.be('example.com');
|
||||||
|
expect(uri.getPath()).to.be('/MapServer/export');
|
||||||
|
var queryData = uri.getQueryData();
|
||||||
|
expect(queryData.get('BBOX')).to.be('5.5,2.25,-9.5,0.75');
|
||||||
|
expect(queryData.get('FORMAT')).to.be('PNG32');
|
||||||
|
expect(queryData.get('IMAGESR')).to.be('3857');
|
||||||
|
expect(queryData.get('BBOXSR')).to.be('3857');
|
||||||
|
expect(queryData.get('TRANSPARENT')).to.be('true');
|
||||||
|
|
||||||
|
});
|
||||||
|
|
||||||
|
it('returns a non floating point DPI value', function() {
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
var image = source.getImage([3, 2, -7, 1.12], resolution, pixelRatio, proj3857);
|
||||||
|
var uri = new goog.Uri(image.src_);
|
||||||
|
var queryData = uri.getQueryData();
|
||||||
|
expect(queryData.get('DPI')).to.be('90');
|
||||||
|
});
|
||||||
|
|
||||||
|
it('returns a image with the expected URL for ImageServer', function() {
|
||||||
|
options.url = 'http://example.com/ImageServer';
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
var image = source.getImage([3, 2, -7, 1], resolution, pixelRatio, proj3857);
|
||||||
|
var uri = new goog.Uri(image.src_);
|
||||||
|
expect(uri.getScheme()).to.be('http');
|
||||||
|
expect(uri.getDomain()).to.be('example.com');
|
||||||
|
expect(uri.getPath()).to.be('/ImageServer/exportImage');
|
||||||
|
var queryData = uri.getQueryData();
|
||||||
|
expect(queryData.get('BBOX')).to.be('5.5,2.25,-9.5,0.75');
|
||||||
|
expect(queryData.get('FORMAT')).to.be('PNG32');
|
||||||
|
expect(queryData.get('IMAGESR')).to.be('3857');
|
||||||
|
expect(queryData.get('BBOXSR')).to.be('3857');
|
||||||
|
expect(queryData.get('TRANSPARENT')).to.be('true');
|
||||||
|
});
|
||||||
|
|
||||||
|
it('allows various parameters to be overridden', function() {
|
||||||
|
options.params.FORMAT = 'png';
|
||||||
|
options.params.TRANSPARENT = false;
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
var image = source.getImage([3, 2, -3, 1], resolution, pixelRatio, projection);
|
||||||
|
var uri = new goog.Uri(image.src_);
|
||||||
|
var queryData = uri.getQueryData();
|
||||||
|
expect(queryData.get('FORMAT')).to.be('png');
|
||||||
|
expect(queryData.get('TRANSPARENT')).to.be('false');
|
||||||
|
});
|
||||||
|
|
||||||
|
it('allows adding rest option', function() {
|
||||||
|
options.params.LAYERS = 'show:1,3,4';
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
var image = source.getImage([3, 2, -3, 1], resolution, pixelRatio, proj3857);
|
||||||
|
var uri = new goog.Uri(image.src_);
|
||||||
|
var queryData = uri.getQueryData();
|
||||||
|
expect(queryData.get('LAYERS')).to.be('show:1,3,4');
|
||||||
|
});
|
||||||
|
});
|
||||||
|
|
||||||
|
describe('#updateParams', function() {
|
||||||
|
|
||||||
|
it('add a new param', function() {
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
source.updateParams({'TEST': 'value'});
|
||||||
|
|
||||||
|
var image = source.getImage([3, 2, -7, 1], resolution, pixelRatio, proj3857);
|
||||||
|
var uri = new goog.Uri(image.src_);
|
||||||
|
var queryData = uri.getQueryData();
|
||||||
|
|
||||||
|
expect(queryData.get('TEST')).to.be('value');
|
||||||
|
});
|
||||||
|
|
||||||
|
it('updates an existing param', function() {
|
||||||
|
options.params.TEST = 'value';
|
||||||
|
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
source.updateParams({'TEST':'newValue'});
|
||||||
|
|
||||||
|
var image = source.getImage([3, 2, -7, 1], resolution, pixelRatio, proj3857);
|
||||||
|
var uri = new goog.Uri(image.src_);
|
||||||
|
var queryData = uri.getQueryData();
|
||||||
|
|
||||||
|
expect(queryData.get('TEST')).to.be('newValue');
|
||||||
|
});
|
||||||
|
|
||||||
|
});
|
||||||
|
|
||||||
|
describe('#getParams', function() {
|
||||||
|
|
||||||
|
it('verify getting a param', function() {
|
||||||
|
options.params.TEST = 'value';
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
|
||||||
|
var setParams = source.getParams();
|
||||||
|
|
||||||
|
expect(setParams).to.eql({TEST: 'value'});
|
||||||
|
});
|
||||||
|
|
||||||
|
it('verify on adding a param', function() {
|
||||||
|
options.params.TEST = 'value';
|
||||||
|
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
source.updateParams({'TEST2':'newValue'});
|
||||||
|
|
||||||
|
var setParams = source.getParams();
|
||||||
|
|
||||||
|
expect(setParams).to.eql({TEST:'value', TEST2:'newValue'});
|
||||||
|
});
|
||||||
|
|
||||||
|
it('verify on update a param', function() {
|
||||||
|
options.params.TEST = 'value';
|
||||||
|
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
source.updateParams({'TEST':'newValue'});
|
||||||
|
|
||||||
|
var setParams = source.getParams();
|
||||||
|
|
||||||
|
expect(setParams).to.eql({TEST:'newValue'});
|
||||||
|
});
|
||||||
|
|
||||||
|
});
|
||||||
|
|
||||||
|
describe('#getUrl', function() {
|
||||||
|
|
||||||
|
it('verify getting url', function() {
|
||||||
|
options.url = 'http://test.com/MapServer';
|
||||||
|
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
|
||||||
|
var url = source.getUrl();
|
||||||
|
|
||||||
|
expect(url).to.eql('http://test.com/MapServer');
|
||||||
|
});
|
||||||
|
|
||||||
|
|
||||||
|
});
|
||||||
|
|
||||||
|
describe('#setUrl', function() {
|
||||||
|
|
||||||
|
it('verify setting url when not set yet', function() {
|
||||||
|
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
source.setUrl('http://test.com/MapServer');
|
||||||
|
|
||||||
|
var url = source.getUrl();
|
||||||
|
|
||||||
|
expect(url).to.eql('http://test.com/MapServer');
|
||||||
|
});
|
||||||
|
|
||||||
|
it('verify setting url with existing url', function() {
|
||||||
|
options.url = 'http://test.com/MapServer';
|
||||||
|
|
||||||
|
var source = new ol.source.ImageArcGISRest(options);
|
||||||
|
source.setUrl('http://test2.com/MapServer');
|
||||||
|
|
||||||
|
var url = source.getUrl();
|
||||||
|
|
||||||
|
expect(url).to.eql('http://test2.com/MapServer');
|
||||||
|
});
|
||||||
|
});
|
||||||
|
|
||||||
|
|
||||||
|
});
|
||||||
|
|
||||||
|
goog.require('goog.Uri');
|
||||||
|
goog.require('ol.source.ImageArcGISRest');
|
||||||
|
goog.require('ol.proj');
|
||||||
Reference in New Issue
Block a user