goog.provide('ol.ImageBase');
goog.require('ol');
goog.require('ol.events.EventTarget');
goog.require('ol.events.EventType');
/**
* @constructor
* @abstract
* @extends {ol.events.EventTarget}
* @param {ol.Extent} extent Extent.
* @param {number|undefined} resolution Resolution.
* @param {number} pixelRatio Pixel ratio.
* @param {ol.ImageState} state State.
* @param {Array.<ol.Attribution>} attributions Attributions.
*/
ol.ImageBase = function(extent, resolution, pixelRatio, state, attributions) {
ol.events.EventTarget.call(this);
/**
* @private
* @type {Array.<ol.Attribution>}
*/
this.attributions_ = attributions;
/**
* @protected
* @type {ol.Extent}
*/
this.extent = extent;
/**
* @private
* @type {number}
*/
this.pixelRatio_ = pixelRatio;
/**
* @protected
* @type {number|undefined}
*/
this.resolution = resolution;
/**
* @protected
* @type {ol.ImageState}
*/
this.state = state;
};
ol.inherits(ol.ImageBase, ol.events.EventTarget);
/**
* @protected
*/
ol.ImageBase.prototype.changed = function() {
this.dispatchEvent(ol.events.EventType.CHANGE);
};
/**
* @return {Array.<ol.Attribution>} Attributions.
*/
ol.ImageBase.prototype.getAttributions = function() {
return this.attributions_;
};
/**
* @return {ol.Extent} Extent.
*/
ol.ImageBase.prototype.getExtent = function() {
return this.extent;
};
/**
* @abstract
* @param {Object=} opt_context Object.
* @return {HTMLCanvasElement|Image|HTMLVideoElement} Image.
*/
ol.ImageBase.prototype.getImage = function(opt_context) {};
/**
* @return {number} PixelRatio.
*/
ol.ImageBase.prototype.getPixelRatio = function() {
return this.pixelRatio_;
};
/**
* @return {number} Resolution.
*/
ol.ImageBase.prototype.getResolution = function() {
return /** @type {number} */ (this.resolution);
};
/**
* @return {ol.ImageState} State.
*/
ol.ImageBase.prototype.getState = function() {
return this.state;
};
/**
* Load not yet loaded URI.
* @abstract
*/
ol.ImageBase.prototype.load = function() {};
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