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Viewing file:     crPdf.js (3.89 KB)      -rw-r--r--

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.CRPDF = void 0;
var _utils = require("../../utils");
var _crProtocolHelper = require("./crProtocolHelper");
/**
 * Copyright 2017 Google Inc. All rights reserved.
 * Modifications copyright (c) Microsoft Corporation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

const PagePaperFormats = {
  letter: {
    width: 8.5,
    height: 11
  },
  legal: {
    width: 8.5,
    height: 14
  },
  tabloid: {
    width: 11,
    height: 17
  },
  ledger: {
    width: 17,
    height: 11
  },
  a0: {
    width: 33.1,
    height: 46.8
  },
  a1: {
    width: 23.4,
    height: 33.1
  },
  a2: {
    width: 16.54,
    height: 23.4
  },
  a3: {
    width: 11.7,
    height: 16.54
  },
  a4: {
    width: 8.27,
    height: 11.7
  },
  a5: {
    width: 5.83,
    height: 8.27
  },
  a6: {
    width: 4.13,
    height: 5.83
  }
};
const unitToPixels = {
  'px': 1,
  'in': 96,
  'cm': 37.8,
  'mm': 3.78
};
function convertPrintParameterToInches(text) {
  if (text === undefined) return undefined;
  let unit = text.substring(text.length - 2).toLowerCase();
  let valueText = '';
  if (unitToPixels.hasOwnProperty(unit)) {
    valueText = text.substring(0, text.length - 2);
  } else {
    // In case of unknown unit try to parse the whole parameter as number of pixels.
    // This is consistent with phantom's paperSize behavior.
    unit = 'px';
    valueText = text;
  }
  const value = Number(valueText);
  (0, _utils.assert)(!isNaN(value), 'Failed to parse parameter value: ' + text);
  const pixels = value * unitToPixels[unit];
  return pixels / 96;
}
class CRPDF {
  constructor(client) {
    this._client = void 0;
    this._client = client;
  }
  async generate(options) {
    const {
      scale = 1,
      displayHeaderFooter = false,
      headerTemplate = '',
      footerTemplate = '',
      printBackground = false,
      landscape = false,
      pageRanges = '',
      preferCSSPageSize = false,
      margin = {},
      tagged = false,
      outline = false
    } = options;
    let paperWidth = 8.5;
    let paperHeight = 11;
    if (options.format) {
      const format = PagePaperFormats[options.format.toLowerCase()];
      (0, _utils.assert)(format, 'Unknown paper format: ' + options.format);
      paperWidth = format.width;
      paperHeight = format.height;
    } else {
      paperWidth = convertPrintParameterToInches(options.width) || paperWidth;
      paperHeight = convertPrintParameterToInches(options.height) || paperHeight;
    }
    const marginTop = convertPrintParameterToInches(margin.top) || 0;
    const marginLeft = convertPrintParameterToInches(margin.left) || 0;
    const marginBottom = convertPrintParameterToInches(margin.bottom) || 0;
    const marginRight = convertPrintParameterToInches(margin.right) || 0;
    const generateDocumentOutline = outline;
    const generateTaggedPDF = tagged;
    const result = await this._client.send('Page.printToPDF', {
      transferMode: 'ReturnAsStream',
      landscape,
      displayHeaderFooter,
      headerTemplate,
      footerTemplate,
      printBackground,
      scale,
      paperWidth,
      paperHeight,
      marginTop,
      marginBottom,
      marginLeft,
      marginRight,
      pageRanges,
      preferCSSPageSize,
      generateTaggedPDF,
      generateDocumentOutline
    });
    return await (0, _crProtocolHelper.readProtocolStream)(this._client, result.stream);
  }
}
exports.CRPDF = CRPDF;