Rename ol.source.SingleImageWMS to ol.source.ImageWMS

2013-09-11 16:31:24 +02:00
parent 32d35386ba
commit a21ee997ba
9 changed files with 24 additions and 24 deletions
--- a/src/ol/source/imagewmssource.js
+++ b/src/ol/source/imagewmssource.js
@@ -0,0 +1,128 @@
+goog.provide('ol.source.ImageWMS');
+
+goog.require('goog.asserts');
+goog.require('goog.object');
+goog.require('ol.Image');
+goog.require('ol.ImageUrlFunction');
+goog.require('ol.extent');
+goog.require('ol.source.FeatureInfoSource');
+goog.require('ol.source.Image');
+goog.require('ol.source.wms');
+
+
+
+/**
+ * @constructor
+ * @extends {ol.source.Image}
+ * @implements {ol.source.FeatureInfoSource}
+ * @param {ol.source.ImageWMSOptions} options Options.
+ */
+ol.source.ImageWMS = function(options) {
+
+  /**
+   * @private
+   * @type {Object}
+   */
+  this.params_ = options.params;
+
+  var imageUrlFunction = goog.isDef(options.url) ?
+      ol.ImageUrlFunction.createFromParamsFunction(
+          options.url, this.params_, ol.source.wms.getUrl) :
+      ol.ImageUrlFunction.nullImageUrlFunction;
+
+  goog.base(this, {
+    attributions: options.attributions,
+    crossOrigin: options.crossOrigin,
+    extent: options.extent,
+    projection: options.projection,
+    resolutions: options.resolutions,
+    imageUrlFunction: imageUrlFunction
+  });
+
+  /**
+   * @private
+   * @type {ol.source.WMSGetFeatureInfoOptions}
+   */
+  this.getFeatureInfoOptions_ = goog.isDef(options.getFeatureInfoOptions) ?
+      options.getFeatureInfoOptions : {};
+
+  /**
+   * @private
+   * @type {ol.Image}
+   */
+  this.image_ = null;
+
+  /**
+   * @private
+   * @type {number}
+   */
+  this.ratio_ = goog.isDef(options.ratio) ?
+      options.ratio : 1.5;
+
+};
+goog.inherits(ol.source.ImageWMS, ol.source.Image);
+
+
+/**
+ * Get the user-provided params, i.e. those passed to the constructor through
+ * the "params" option, and possibly updated using the updateParams method.
+ * @return {Object} Params.
+ */
+ol.source.ImageWMS.prototype.getParams = function() {
+  return this.params_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.ImageWMS.prototype.getImage =
+    function(extent, resolution, projection) {
+  resolution = this.findNearestResolution(resolution);
+
+  var image = this.image_;
+  if (!goog.isNull(image) &&
+      image.getResolution() == resolution &&
+      ol.extent.containsExtent(image.getExtent(), extent)) {
+    return image;
+  }
+
+  extent = extent.slice();
+  ol.extent.scaleFromCenter(extent, this.ratio_);
+  var width = (extent[1] - extent[0]) / resolution;
+  var height = (extent[3] - extent[2]) / resolution;
+  var size = [width, height];
+
+  this.image_ = this.createImage(extent, resolution, size, projection);
+  return this.image_;
+};
+
+
+/**
+ * @inheritDoc
+ */
+ol.source.ImageWMS.prototype.getFeatureInfoForPixel =
+    function(pixel, map, success, opt_error) {
+  var view2D = map.getView().getView2D(),
+      projection = view2D.getProjection(),
+      size = map.getSize(),
+      bottomLeft = map.getCoordinateFromPixel([0, size[1]]),
+      topRight = map.getCoordinateFromPixel([size[0], 0]),
+      extent = [bottomLeft[0], topRight[0], bottomLeft[1], topRight[1]],
+      url = this.imageUrlFunction(extent, size, projection);
+  goog.asserts.assert(goog.isDef(url),
+      'ol.source.ImageWMS#imageUrlFunction does not return a url');
+  ol.source.wms.getFeatureInfo(url, pixel, this.getFeatureInfoOptions_, success,
+      opt_error);
+};
+
+
+/**
+ * Update the user-provided params.
+ * @param {Object} params Params.
+ */
+ol.source.ImageWMS.prototype.updateParams = function(params) {
+  goog.object.extend(this.params_, params);
+  this.image_ = null;
+  this.dispatchChangeEvent();
+};