exceljs/dist/es5/xlsx/xform/drawing/ext-xform.js

Excel Workbook Manager - Read and Write xlsx and csv Files.

"use strict";

const BaseXform = require('../base-xform');

/** https://en.wikipedia.org/wiki/Office_Open_XML_file_formats#DrawingML */
const EMU_PER_PIXEL_AT_96_DPI = 9525;
class ExtXform extends BaseXform {
  constructor(options) {
    super();
    this.tag = options.tag;
    this.map = {};
  }
  render(xmlStream, model) {
    xmlStream.openNode(this.tag);
    const width = Math.floor(model.width * EMU_PER_PIXEL_AT_96_DPI);
    const height = Math.floor(model.height * EMU_PER_PIXEL_AT_96_DPI);
    xmlStream.addAttribute('cx', width);
    xmlStream.addAttribute('cy', height);
    xmlStream.closeNode();
  }
  parseOpen(node) {
    if (node.name === this.tag) {
      this.model = {
        width: parseInt(node.attributes.cx || '0', 10) / EMU_PER_PIXEL_AT_96_DPI,
        height: parseInt(node.attributes.cy || '0', 10) / EMU_PER_PIXEL_AT_96_DPI
      };
      return true;
    }
    return false;
  }
  parseText( /* text */) {}
  parseClose( /* name */
  ) {
    return false;
  }
}
module.exports = ExtXform;
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