87a06c0086
This adds consistency between ol.Image and ol.ImageTile. Now both have an exportable getImage method.
130 lines
2.2 KiB
JavaScript
130 lines
2.2 KiB
JavaScript
goog.provide('ol.ImageBase');
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goog.provide('ol.ImageState');
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goog.require('goog.asserts');
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goog.require('goog.events.EventTarget');
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goog.require('goog.events.EventType');
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goog.require('ol.Attribution');
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goog.require('ol.Extent');
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/**
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* @enum {number}
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*/
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ol.ImageState = {
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IDLE: 0,
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LOADING: 1,
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LOADED: 2,
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ERROR: 3
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};
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/**
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* @constructor
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* @extends {goog.events.EventTarget}
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* @param {ol.Extent} extent Extent.
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* @param {number|undefined} resolution Resolution.
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* @param {number} pixelRatio Pixel ratio.
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* @param {ol.ImageState} state State.
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* @param {Array.<ol.Attribution>} attributions Attributions.
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*/
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ol.ImageBase = function(extent, resolution, pixelRatio, state, attributions) {
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goog.base(this);
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/**
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* @private
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* @type {Array.<ol.Attribution>}
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*/
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this.attributions_ = attributions;
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/**
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* @protected
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* @type {ol.Extent}
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*/
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this.extent = extent;
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/**
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* @private
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* @type {number}
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*/
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this.pixelRatio_ = pixelRatio;
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/**
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* @protected
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* @type {number|undefined}
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*/
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this.resolution = resolution;
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/**
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* @protected
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* @type {ol.ImageState}
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*/
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this.state = state;
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};
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goog.inherits(ol.ImageBase, goog.events.EventTarget);
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/**
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* @protected
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*/
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ol.ImageBase.prototype.changed = function() {
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this.dispatchEvent(goog.events.EventType.CHANGE);
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};
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/**
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* @return {Array.<ol.Attribution>} Attributions.
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*/
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ol.ImageBase.prototype.getAttributions = function() {
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return this.attributions_;
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};
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/**
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* @return {ol.Extent} Extent.
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*/
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ol.ImageBase.prototype.getExtent = function() {
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return this.extent;
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};
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/**
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* @param {Object=} opt_context Object.
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* @return {HTMLCanvasElement|Image|HTMLVideoElement} Image.
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*/
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ol.ImageBase.prototype.getImage = goog.abstractMethod;
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/**
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* @return {number} PixelRatio.
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*/
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ol.ImageBase.prototype.getPixelRatio = function() {
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return this.pixelRatio_;
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};
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/**
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* @return {number} Resolution.
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*/
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ol.ImageBase.prototype.getResolution = function() {
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goog.asserts.assert(goog.isDef(this.resolution), 'resolution not yet set');
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return this.resolution;
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};
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/**
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* @return {ol.ImageState} State.
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*/
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ol.ImageBase.prototype.getState = function() {
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return this.state;
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};
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/**
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* Load not yet loaded URI.
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*/
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ol.ImageBase.prototype.load = goog.abstractMethod;
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