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Custom ArcGISDynamicMapServiceLayer
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| <!DOCTYPE html> | |
| <html> | |
| <!-- | |
| Example of how to extend the ArcGISDynamicMapService layer to send custom parameters to exportMap. | |
| Adapted from the Dynamic Map Service Example: | |
| https://developers.arcgis.com/javascript/jssamples/map_dynamic.html | |
| --> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| <!--The viewport meta tag is used to improve the presentation and behavior of the samples | |
| on iOS devices--> | |
| <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"> | |
| <title>Custom dynamic layer</title> | |
| <link rel="stylesheet" href="http://js.arcgis.com/3.8/js/esri/css/esri.css"/> | |
| <style> | |
| html, body, #mapDiv{ | |
| padding: 0; | |
| margin: 0; | |
| height: 100%; | |
| } | |
| </style> | |
| <script src="http://js.arcgis.com/3.8/"></script> | |
| <script> | |
| var map; | |
| require([ | |
| "esri/map", | |
| "esri/layers/ArcGISDynamicMapServiceLayer", | |
| "esri/layers/ImageParameters", | |
| // additional dependencies to extend the class | |
| 'dojo/_base/declare', | |
| 'dojo/io-query' | |
| ], function ( | |
| Map, ArcGISDynamicMapServiceLayer, ImageParameters, declare, ioQuery) { | |
| // custom class extending ArcGISDynamicMapServiceLayer | |
| var CustomArcGISDynamicMapServiceLayer = declare([ArcGISDynamicMapServiceLayer], { | |
| // override get image url to send parameters to service | |
| // example: | |
| // http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Population_World/MapServer/export?dpi=96&transparent=true&format=jpeg&bbox=-150.11384396396352%2C-60.90690208135621%2C38.98689434289862%2C36.62926820323585&bboxSR=4326&imageSR=4326&size=950%2C490&f=image&myParam=custom | |
| getImageUrl: function(extent,width,height,callback) { | |
| console.log(arguments); | |
| // TODO: get hardcoded vals from the base class, and/or args above | |
| var params = { | |
| dpi:96, | |
| transparent:true, | |
| format:"jpeg", | |
| bbox:extent.xmin + "," + extent.ymin + "," + extent.xmax + "," + extent.ymax, | |
| bboxSR:4326, | |
| imageSR:4326, | |
| size:width+","+height, | |
| // width:width, | |
| // height:height, | |
| f:"image", | |
| // NOTE: custom parameters go here | |
| myParam:"custom" | |
| }; | |
| callback(this._url.path + "/export?" + ioQuery.objectToQuery(params)); | |
| } | |
| }); | |
| // NOTE: from this point on the sample code is the same | |
| map = new Map("mapDiv", { | |
| sliderOrientation : "horizontal" | |
| }); | |
| var imageParameters = new ImageParameters(); | |
| imageParameters.format = "jpeg"; //set the image type to PNG24, note default is PNG8. | |
| //Takes a URL to a non cached map service. | |
| var dynamicMapServiceLayer = new CustomArcGISDynamicMapServiceLayer("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Population_World/MapServer", { | |
| "opacity" : 0.5, | |
| "imageParameters" : imageParameters | |
| }); | |
| map.addLayer(dynamicMapServiceLayer); | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <div id="mapDiv"></div> | |
| </body> | |
| </html> |
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