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ImageStyle.js
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52 lines (45 loc) · 1.71 KB
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/* Copyright© 2000 - 2021 SuperMap Software Co.Ltd. All rights reserved.
* This program are made available under the terms of the Apache License, Version 2.0
* which accompanies this distribution and is available at http://www.apache.org/licenses/LICENSE-2.0.html.*/
import L from "leaflet";
import '../../core/Base';
/**
* @class L.supermap.imageStyle
* @classdesc 自定义图形要素风格。
* @category Visualization Graphic
* @extends {L.Class}
* @param {Object} options - 图形要素风格参数。
* @param {HTMLImageElement} options.img - image 对象。
* @param {Array} [options.origin=[0.0]] - 中心点。
* @param {Array} [options.anchor] - 偏移量。
* @param {Array} [options.size] - 图形大小，即高度和宽度[width,height]。
* @param {Array} [options.radius] - 半径。
* @param {Array} [options.weight] - 宽度。
*/
export var ImageStyle = L.Class.extend({
options: {
img: null,
origin: [0, 0],
anchor: null,
size: null
},
initialize: function (options) {
options = options || {};
L.Util.setOptions(this, options);
this._canvas = document.createElement('canvas');
this._canvas.width = 2 * (this.options.radius + this.options.weight);
this._canvas.height = 2 * (this.options.radius + this.options.weight);
this._ctx = this._canvas.getContext('2d');
},
/**
* @function L.supermap.imageStyle.prototype.getStyle
* @description 获取样式。
*/
getStyle: function () {
return this.options;
}
});
export var imageStyle = function (options) {
return new ImageStyle(options);
};
L.supermap.imageStyle = imageStyle;