@qn-pandora/pandora-visualization/es/modules/base-dashboard/transform.js

Pandora 通用可视化库

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
    function verb(n) { return function (v) { return step([n, v]); }; }
    function step(op) {
        if (f) throw new TypeError("Generator is already executing.");
        while (_) try {
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            if (y = 0, t) op = [op[0] & 2, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
                case 4: _.label++; return { value: op[1], done: false };
                case 5: _.label++; y = op[1]; op = [0]; continue;
                case 7: op = _.ops.pop(); _.trys.pop(); continue;
                default:
                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
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                    if (t[2]) _.ops.pop();
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        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
    }
};
// @ts-ignore
import * as domtoimage from '../../forked-third-part/dom-to-image';
import { formatString } from '../../services/language';
import { DashboardLocale } from '../../constants/language/dashboard/type';
export function transformDomToCanvas(dom, scale) {
    if (scale === void 0) { scale = 1; }
    return __awaiter(this, void 0, void 0, function () {
        var option, dataUrl, image, canvas;
        return __generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    if (!dom) {
                        return [2 /*return*/, Promise.reject(formatString(DashboardLocale.export.node_error))];
                    }
                    option = {
                        filter: function (node) {
                            // 过滤页面上的 popover && 全屏浮动操作栏
                            if (node && node.classList) {
                                var classList = node.classList;
                                return !(classList.contains('ant-popover') ||
                                    classList.contains('pandora-antd-popover'));
                            }
                            return true;
                        },
                        style: { overflow: 'visible', height: 'auto' }
                    };
                    return [4 /*yield*/, domtoimage.toPng(dom, option)];
                case 1:
                    dataUrl = _a.sent();
                    return [4 /*yield*/, new Promise(function (resolve, reject) {
                            var image = new Image();
                            image.onload = function () {
                                resolve(image);
                            };
                            image.onerror = reject;
                            image.src = dataUrl;
                        })];
                case 2:
                    image = _a.sent();
                    canvas = document.createElement('canvas');
                    canvas.width = image.width * scale;
                    canvas.height = image.height * scale;
                    canvas.getContext('2d').drawImage(image, 0, 0, canvas.width, canvas.height);
                    return [2 /*return*/, canvas];
            }
        });
    });
}
export function transformDomToPDF(dom, scale) {
    if (scale === void 0) { scale = 1; }
    return __awaiter(this, void 0, void 0, function () {
        var canvas, jsPDF, pdf, pageData;
        return __generator(this, function (_a) {
            switch (_a.label) {
                case 0: return [4 /*yield*/, transformDomToCanvas(dom, scale)];
                case 1:
                    canvas = _a.sent();
                    return [4 /*yield*/, import('jspdf')];
                case 2:
                    jsPDF = (_a.sent()).jsPDF;
                    pdf = new jsPDF('p', 'pt', 'a4');
                    pageData = canvas.toDataURL('image/png', 1.0);
                    pdf.addImage(pageData, 'PNG', 0, 0, 595.28, (592.28 / canvas.width) * canvas.height);
                    return [2 /*return*/, pdf];
            }
        });
    });
}