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synced 2024-10-26 20:57:35 +03:00
Add option to include default sRGB profile for RGB colors
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@ -521,6 +521,16 @@ def test_partial_pdf_custom_metadata():
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assert b'value' in stdout
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def test_pdf_srgb():
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stdout = _run('--srgb --uncompressed-pdf - -', b'test')
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assert b'sRGB' in stdout
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def test_pdf_no_srgb():
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stdout = _run('--uncompressed-pdf - -', b'test')
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assert b'sRGB' not in stdout
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@pytest.mark.parametrize('html, fields', (
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('<input>', ['/Tx', '/V ()']),
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('<input value="">', ['/Tx', '/V ()']),
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@ -45,6 +45,9 @@ VERSION = __version__ = '62.3'
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#: Whether custom HTML metadata should be stored in the generated PDF.
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#: :param bool presentational_hints:
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#: Whether HTML presentational hints are followed.
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#: :param bool srgb:
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#: Whether sRGB color profile should be included and set as default for
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#: device-dependant RGB colors.
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#: :param bool optimize_images:
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#: Whether size of embedded images should be optimized, with no quality
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#: loss.
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@ -71,6 +74,7 @@ DEFAULT_OPTIONS = {
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'uncompressed_pdf': False,
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'custom_metadata': False,
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'presentational_hints': False,
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'srgb': False,
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'optimize_images': False,
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'jpeg_quality': None,
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'dpi': None,
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@ -98,6 +98,9 @@ PARSER.add_argument(
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PARSER.add_argument(
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'-p', '--presentational-hints', action='store_true',
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help='follow HTML presentational hints')
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PARSER.add_argument(
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'--srgb', action='store_true',
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help='include sRGB color profile')
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PARSER.add_argument(
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'--optimize-images', action='store_true',
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help='optimize size of embedded images with no quality loss')
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@ -1,5 +1,7 @@
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"""PDF generation management."""
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from importlib.resources import files
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import pydyf
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from .. import VERSION, Attachment
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@ -116,11 +118,14 @@ def generate_pdf(document, target, zoom, **options):
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# Set properties according to PDF variants
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mark = False
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srgb = options['srgb']
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variant = options['pdf_variant']
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if variant:
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variant_function, properties = VARIANTS[variant]
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if 'mark' in properties:
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mark = properties['mark']
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if 'srgb' in properties:
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srgb = properties['srgb']
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pdf = pydyf.PDF()
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states = pydyf.Dictionary()
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@ -294,6 +299,22 @@ def generate_pdf(document, target, zoom, **options):
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pdf.catalog['Names'] = pydyf.Dictionary()
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pdf.catalog['Names']['Dests'] = dests
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if srgb:
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# Add ICC profile.
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profile = pydyf.Stream(
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[(files(__package__) / 'sRGB2014.icc').read_bytes()],
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pydyf.Dictionary({'N': 3, 'Alternate': '/DeviceRGB'}),
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compress=compress)
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pdf.add_object(profile)
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pdf.catalog['OutputIntents'] = pydyf.Array([
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pydyf.Dictionary({
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'Type': '/OutputIntent',
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'S': '/GTS_PDFA1',
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'OutputConditionIdentifier': pydyf.String('sRGB IEC61966-2.1'),
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'DestOutputProfile': profile.reference,
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}),
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])
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# Apply PDF variants functions
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if variant:
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variant_function(
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@ -1,15 +1,5 @@
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"""PDF/A generation."""
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try:
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# Available in Python 3.9+
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from importlib.resources import files
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except ImportError:
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# Deprecated in Python 3.11+
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from importlib.resources import read_binary
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else:
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def read_binary(package, resource):
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return (files(package) / resource).read_bytes()
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from functools import partial
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import pydyf
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@ -20,20 +10,6 @@ from .metadata import add_metadata
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def pdfa(pdf, metadata, document, page_streams, attachments, compress,
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version, variant):
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"""Set metadata for PDF/A documents."""
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# Add ICC profile.
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profile = pydyf.Stream(
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[read_binary(__package__, 'sRGB2014.icc')],
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pydyf.Dictionary({'N': 3, 'Alternate': '/DeviceRGB'}),
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compress=compress)
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pdf.add_object(profile)
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pdf.catalog['OutputIntents'] = pydyf.Array([
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pydyf.Dictionary({
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'Type': '/OutputIntent',
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'S': '/GTS_PDFA1',
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'OutputConditionIdentifier': pydyf.String('sRGB IEC61966-2.1'),
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'DestOutputProfile': profile.reference,
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}),
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])
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# Handle attachments.
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if version == 1:
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@ -95,23 +71,23 @@ def pdfa(pdf, metadata, document, page_streams, attachments, compress,
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VARIANTS = {
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'pdf/a-1b': (
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partial(pdfa, version=1, variant='B'),
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{'version': '1.4', 'identifier': True}),
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{'version': '1.4', 'identifier': True, 'srgb': True}),
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'pdf/a-2b': (
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partial(pdfa, version=2, variant='B'),
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{'version': '1.7', 'identifier': True}),
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{'version': '1.7', 'identifier': True, 'srgb': True}),
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'pdf/a-3b': (
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partial(pdfa, version=3, variant='B'),
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{'version': '1.7', 'identifier': True}),
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{'version': '1.7', 'identifier': True, 'srgb': True}),
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'pdf/a-4b': (
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partial(pdfa, version=4, variant='B'),
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{'version': '2.0', 'identifier': True}),
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{'version': '2.0', 'identifier': True, 'srgb': True}),
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'pdf/a-2u': (
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partial(pdfa, version=2, variant='U'),
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{'version': '1.7', 'identifier': True}),
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{'version': '1.7', 'identifier': True, 'srgb': True}),
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'pdf/a-3u': (
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partial(pdfa, version=3, variant='U'),
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{'version': '1.7', 'identifier': True}),
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{'version': '1.7', 'identifier': True, 'srgb': True}),
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'pdf/a-4u': (
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partial(pdfa, version=4, variant='U'),
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{'version': '2.0', 'identifier': True}),
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{'version': '2.0', 'identifier': True, 'srgb': True}),
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}
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