pdfkit/tests/unit/color.spec.js at 4133b0fd21c3e8ad2dbd9f3efe008a0f84bfefff · foliojs/pdfkit · GitHub

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import PDFDocument from '../../lib/document';
import { logData } from './helpers';

describe('color', function () {
  test('normalize', function () {
    const doc = new PDFDocument();

    expect(doc._normalizeColor('#FFF')).toEqual([1, 1, 1]);
    expect(doc._normalizeColor('#FFFFFF')).toEqual([1, 1, 1]);
    expect(doc._normalizeColor('#000')).toEqual([0, 0, 0]);
    expect(doc._normalizeColor('#000000')).toEqual([0, 0, 0]);
    expect(doc._normalizeColor('#6F6FEF')).toEqual([
      0.43529411764705883, 0.43529411764705883, 0.9372549019607843,
    ]);

    expect(doc._normalizeColor([255, 255, 255])).toEqual([1, 1, 1]);
    expect(doc._normalizeColor([255, 255, 255, 255])).toEqual([
      2.55, 2.55, 2.55, 2.55,
    ]);
    expect(doc._normalizeColor([0, 0, 0])).toEqual([0, 0, 0]);
    expect(doc._normalizeColor([0, 0, 0, 0])).toEqual([0, 0, 0, 0]);
    expect(doc._normalizeColor([128, 10, 18])).toEqual([
      0.5019607843137255, 0.0392156862745098, 0.07058823529411765,
    ]);
    expect(doc._normalizeColor([128, 10, 18, 100])).toEqual([
      1.28, 0.1, 0.18, 1,
    ]);
  });

  test('normalize with spot color', function () {
    const doc = new PDFDocument();
    doc.addSpotColor('PANTONE 123 C', 0.1, 0.2, 0.3, 0.4);

    const color = doc._normalizeColor('PANTONE 123 C');
    expect(color.id).toEqual('CS0');
    expect(color.values).toEqual([0.1, 0.2, 0.3, 0.4]);
  });

  test('spot color', function () {
    const doc = new PDFDocument();
    const data = logData(doc);
    doc.addSpotColor('PANTONE185C', 0, 100, 78, 9);
    doc.fillColor('PANTONE185C').text('This text uses spot color!');
    doc.end();

    expect(data).toContainChunk([
      `6 0 obj`,
      '<<\n' +
        '/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]\n' +
        '/ColorSpace <<\n' +
        '/CS0 8 0 R\n' +
        '>>\n' +
        '/Font <<\n' +
        '/F1 9 0 R\n' +
        '>>\n' +
        '>>',
    ]);
  });

  test('spot color with rgb', function () {
    const doc = new PDFDocument();
    const data = logData(doc);
    doc.addSpotColor('MAGENTA', 255, 0, 255);
    doc.fillColor('MAGENTA').text('This text uses spot color!');
    doc.end();

    expect(data).toContainChunk([
      `6 0 obj`,
      '<<\n' +
        '/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]\n' +
        '/ColorSpace <<\n' +
        '/CS0 8 0 R\n' +
        '>>\n' +
        '/Font <<\n' +
        '/F1 9 0 R\n' +
        '>>\n' +
        '>>',
    ]);
  });
});