whiteboard/dist/cjs/renderer/Synthetizer/index.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var validator_1 = require("../../utils/validator");
var Synthetizer = (function () {
    function Synthetizer() {
    }
    Synthetizer.prototype.rasterize = function (target, markerImage, done) {
        if (!validator_1.isHTMLImageElement(target)) {
            throw new Error('Error: only support export to HTMLImageElement');
        }
        var canvas = document.createElement('canvas');
        canvas.width = markerImage.width.baseVal.value;
        canvas.height = markerImage.height.baseVal.value;
        var data = markerImage.outerHTML;
        var ctx = canvas.getContext('2d');
        if (!ctx) {
            throw new Error('Invalid ctx');
        }
        ctx.drawImage(target, 0, 0, canvas.width, canvas.height);
        var DOMURL = window.URL;
        var img = new Image(canvas.width, canvas.height);
        img.setAttribute('crossOrigin', 'anonymous');
        var blob = new Blob([data], { type: 'image/svg+xml' });
        var url = DOMURL.createObjectURL(blob);
        img.onload = function () {
            ctx.drawImage(img, 0, 0);
            DOMURL.revokeObjectURL(url);
            done(canvas.toDataURL('image/png'));
        };
        img.src = url;
    };
    return Synthetizer;
}());
exports.Synthetizer = Synthetizer;