Adding upstream version 0.1.1.
Signed-off-by: Daniel Baumann <daniel@debian.org>
This commit is contained in:
parent
a042d54ff1
commit
00981dc324
GPG key ID:
FBB4F0E80A80222F
17 changed files with 2130 additions and 0 deletions
80
tests/__init__.py
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80
tests/__init__.py
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"""
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Test suite for pydyf.
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This module adds a PNG export based on GhostScript, that is released under
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AGPL. As "the end user has the ability to opt out of installing the AGPL
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version of [Ghostscript] during the install process", and with explicit
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aggreement from Artifex, it is OK to distribute this code under BSD.
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See https://www.ghostscript.com/license.html.
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"""
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import io
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import os
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from pathlib import Path
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from subprocess import PIPE, run
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from PIL import Image
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PIXELS_BY_CHAR = dict(
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_=(255, 255, 255), # white
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R=(255, 0, 0), # red
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B=(0, 0, 255), # blue
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G=(0, 255, 0), # lime green
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K=(0, 0, 0), # black
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z=None, # any color
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)
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def assert_pixels(document, reference_pixels):
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"""Test that the rendered document matches the reference pixels."""
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# Transform the PDF document into a list of RGB tuples
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pdf = io.BytesIO()
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document.write(pdf)
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command = [
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'gs', '-q', '-dNOPAUSE', '-dSAFER', '-sDEVICE=png16m',
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'-r576', '-dDownScaleFactor=8', '-sOutputFile=-', '-']
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png = run(command, input=pdf.getvalue(), stdout=PIPE).stdout
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image = Image.open(io.BytesIO(png))
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pixels = image.getdata()
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# Transform reference drawings into a list of RGB tuples
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lines = tuple(
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line.strip() for line in reference_pixels.splitlines() if line.strip())
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assert len({len(line) for line in lines}) == 1, (
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'The lines of reference pixels don’t have the same length')
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width, height = len(lines[0]), len(lines)
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assert (width, height) == image.size, (
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f'Reference size is {width}×{height}, '
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f'output size is {image.width}×{image.height}')
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reference_pixels = tuple(
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PIXELS_BY_CHAR[char] for line in lines for char in line)
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# Compare pixels
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if pixels != reference_pixels: # pragma: no cover
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for i, (value, reference) in enumerate(zip(pixels, reference_pixels)):
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if reference is None:
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continue
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if any(value != reference
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for value, reference in zip(value, reference)):
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name = os.environ.get('PYTEST_CURRENT_TEST')
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name = name.split(':')[-1].split(' ')[0]
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write_png(f'{name}', pixels, width, height)
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reference_pixels = [
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pixel or (255, 255, 255) for pixel in reference_pixels]
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write_png(f'{name}-reference', reference_pixels, width, height)
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x, y = i % width, i // width
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assert 0, (
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f'Pixel ({x}, {y}) in {name}: '
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f'reference rgba{reference}, got rgba{value}')
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def write_png(name, pixels, width, height): # pragma: no cover
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"""Take a pixel matrix and write a PNG file."""
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directory = Path(__file__).parent / 'results'
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directory.mkdir(exist_ok=True)
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image = Image.new('RGB', (width, height))
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image.putdata(pixels)
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image.save(directory / f'{name}.png')
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708
tests/test_pydyf.py
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708
tests/test_pydyf.py
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import pydyf
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from . import assert_pixels
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def test_fill():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.rectangle(2, 2, 5, 6)
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draw.fill()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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__________
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__KKKKK___
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__KKKKK___
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__KKKKK___
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__KKKKK___
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__KKKKK___
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__KKKKK___
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__________
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__________
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''')
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def test_stroke():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.rectangle(2, 2, 5, 6)
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draw.set_line_width(2)
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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_KKKKKKK__
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_KKKKKKK__
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_KK___KK__
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_KK___KK__
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_KK___KK__
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_KK___KK__
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_KKKKKKK__
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_KKKKKKK__
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__________
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''')
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def test_line_to():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.move_to(2, 2)
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draw.set_line_width(2)
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draw.line_to(2, 5)
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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__________
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__________
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__________
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__________
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_KK_______
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_KK_______
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_KK_______
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__________
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__________
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''')
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def test_set_color_rgb_stroke():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.rectangle(2, 2, 5, 6)
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draw.set_line_width(2)
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draw.set_color_rgb(0, 0, 255, stroke=True)
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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_BBBBBBB__
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_BBBBBBB__
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_BB___BB__
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_BB___BB__
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_BB___BB__
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_BB___BB__
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_BBBBBBB__
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_BBBBBBB__
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__________
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''')
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def test_set_color_rgb_fill():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.rectangle(2, 2, 5, 6)
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draw.set_color_rgb(255, 0, 0)
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draw.fill()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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__________
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__RRRRR___
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__RRRRR___
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__RRRRR___
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__RRRRR___
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__RRRRR___
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__RRRRR___
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__________
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__________
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''')
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def test_set_dash():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.move_to(2, 2)
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draw.set_line_width(2)
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draw.line_to(2, 6)
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draw.set_dash([2, 1], 0)
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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__________
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__________
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__________
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_KK_______
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__________
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_KK_______
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_KK_______
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__________
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__________
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''')
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def test_curve_to():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.move_to(2, 5)
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draw.set_line_width(2)
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draw.curve_to(2, 5, 3, 5, 5, 5)
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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__________
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__________
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__________
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__KKK_____
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__KKK_____
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__________
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__________
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__________
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__________
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''')
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def test_curve_start_to():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.move_to(2, 5)
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draw.set_line_width(2)
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draw.curve_start_to(3, 5, 5, 5)
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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__________
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__________
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__________
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__KKK_____
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__KKK_____
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__________
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__________
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__________
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__________
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''')
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def test_curve_end_to():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.move_to(2, 5)
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draw.set_line_width(2)
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draw.curve_end_to(3, 5, 5, 5)
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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__________
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__________
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__________
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__KKK_____
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__KKK_____
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__________
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__________
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__________
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__________
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''')
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def test_transform():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.move_to(2, 2)
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draw.set_line_width(2)
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draw.line_to(2, 5)
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draw.transform(1, 0, 0, 1, 1, 1)
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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__________
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__________
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__________
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__KK______
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__KK______
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__KK______
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__________
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__________
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__________
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''')
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def test_set_state():
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document = pydyf.PDF()
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graphic_state = pydyf.Dictionary({
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'Type': '/ExtGState',
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'LW': 2,
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})
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document.add_object(graphic_state)
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draw = pydyf.Stream()
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draw.rectangle(2, 2, 5, 6)
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draw.set_state('GS')
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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'Resources': pydyf.Dictionary({
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'ExtGState': pydyf.Dictionary({'GS': graphic_state.reference}),
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}),
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}))
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assert_pixels(document, '''
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__________
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_KKKKKKK__
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_KKKKKKK__
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_KK___KK__
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_KK___KK__
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_KK___KK__
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_KK___KK__
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_KKKKKKK__
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_KKKKKKK__
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__________
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''')
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def test_fill_and_stroke():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.rectangle(2, 2, 5, 6)
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draw.set_line_width(2)
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draw.set_color_rgb(0, 0, 255, stroke=True)
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draw.fill_and_stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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_BBBBBBB__
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_BBBBBBB__
|
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_BBKKKBB__
|
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_BBKKKBB__
|
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_BBKKKBB__
|
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_BBKKKBB__
|
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_BBBBBBB__
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_BBBBBBB__
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__________
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''')
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def test_clip():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.rectangle(3, 3, 5, 6)
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draw.rectangle(4, 3, 2, 6)
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draw.clip()
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draw.end()
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draw.move_to(0, 5)
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draw.line_to(10, 5)
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draw.set_color_rgb(255, 0, 0, stroke=True)
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draw.set_line_width(2)
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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__________
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__________
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__________
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___RRRRR__
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___RRRRR__
|
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__________
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__________
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__________
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__________
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''')
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def test_clip_even_odd():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.rectangle(3, 3, 5, 6)
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draw.rectangle(4, 3, 2, 6)
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draw.clip(even_odd=True)
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draw.end()
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draw.move_to(0, 5)
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draw.line_to(10, 5)
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draw.set_color_rgb(255, 0, 0, stroke=True)
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draw.set_line_width(2)
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draw.stroke()
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document.add_object(draw)
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document.add_page(pydyf.Dictionary({
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'Type': '/Page',
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'Parent': document.pages.reference,
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'Contents': draw.reference,
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'MediaBox': pydyf.Array([0, 0, 10, 10]),
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}))
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assert_pixels(document, '''
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__________
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__________
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__________
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__________
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___R__RR__
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___R__RR__
|
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__________
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__________
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__________
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__________
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''')
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def test_close():
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document = pydyf.PDF()
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draw = pydyf.Stream()
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draw.move_to(2, 2)
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||||
draw.line_to(2, 8)
|
||||
draw.line_to(7, 8)
|
||||
draw.line_to(7, 2)
|
||||
draw.close()
|
||||
draw.set_color_rgb(0, 0, 255, stroke=True)
|
||||
draw.set_line_width(2)
|
||||
draw.stroke()
|
||||
document.add_object(draw)
|
||||
|
||||
document.add_page(pydyf.Dictionary({
|
||||
'Type': '/Page',
|
||||
'Parent': document.pages.reference,
|
||||
'Contents': draw.reference,
|
||||
'MediaBox': pydyf.Array([0, 0, 10, 10]),
|
||||
}))
|
||||
|
||||
assert_pixels(document, '''
|
||||
__________
|
||||
_BBBBBBB__
|
||||
_BBBBBBB__
|
||||
_BB___BB__
|
||||
_BB___BB__
|
||||
_BB___BB__
|
||||
_BB___BB__
|
||||
_BBBBBBB__
|
||||
_BBBBBBB__
|
||||
__________
|
||||
''')
|
||||
|
||||
|
||||
def test_stroke_and_close():
|
||||
document = pydyf.PDF()
|
||||
|
||||
draw = pydyf.Stream()
|
||||
draw.move_to(2, 2)
|
||||
draw.line_to(2, 8)
|
||||
draw.line_to(7, 8)
|
||||
draw.line_to(7, 2)
|
||||
draw.set_color_rgb(0, 0, 255, stroke=True)
|
||||
draw.set_line_width(2)
|
||||
draw.stroke_and_close()
|
||||
document.add_object(draw)
|
||||
|
||||
document.add_page(pydyf.Dictionary({
|
||||
'Type': '/Page',
|
||||
'Parent': document.pages.reference,
|
||||
'Contents': draw.reference,
|
||||
'MediaBox': pydyf.Array([0, 0, 10, 10]),
|
||||
}))
|
||||
|
||||
assert_pixels(document, '''
|
||||
__________
|
||||
_BBBBBBB__
|
||||
_BBBBBBB__
|
||||
_BB___BB__
|
||||
_BB___BB__
|
||||
_BB___BB__
|
||||
_BB___BB__
|
||||
_BBBBBBB__
|
||||
_BBBBBBB__
|
||||
__________
|
||||
''')
|
||||
|
||||
|
||||
def test_fill_stroke_and_close():
|
||||
document = pydyf.PDF()
|
||||
|
||||
draw = pydyf.Stream()
|
||||
draw.move_to(2, 2)
|
||||
draw.line_to(2, 8)
|
||||
draw.line_to(7, 8)
|
||||
draw.line_to(7, 2)
|
||||
draw.set_color_rgb(255, 0, 0)
|
||||
draw.set_color_rgb(0, 0, 255, stroke=True)
|
||||
draw.set_line_width(2)
|
||||
draw.fill_stroke_and_close()
|
||||
document.add_object(draw)
|
||||
|
||||
document.add_page(pydyf.Dictionary({
|
||||
'Type': '/Page',
|
||||
'Parent': document.pages.reference,
|
||||
'Contents': draw.reference,
|
||||
'MediaBox': pydyf.Array([0, 0, 10, 10]),
|
||||
}))
|
||||
|
||||
assert_pixels(document, '''
|
||||
__________
|
||||
_BBBBBBB__
|
||||
_BBBBBBB__
|
||||
_BBRRRBB__
|
||||
_BBRRRBB__
|
||||
_BBRRRBB__
|
||||
_BBRRRBB__
|
||||
_BBBBBBB__
|
||||
_BBBBBBB__
|
||||
__________
|
||||
''')
|
||||
|
||||
|
||||
def test_push_pop_state():
|
||||
document = pydyf.PDF()
|
||||
|
||||
draw = pydyf.Stream()
|
||||
draw.rectangle(2, 2, 5, 6)
|
||||
draw.push_state()
|
||||
draw.rectangle(4, 4, 2, 2)
|
||||
draw.set_color_rgb(255, 0, 0)
|
||||
draw.pop_state()
|
||||
draw.fill()
|
||||
document.add_object(draw)
|
||||
|
||||
document.add_page(pydyf.Dictionary({
|
||||
'Type': '/Page',
|
||||
'Parent': document.pages.reference,
|
||||
'Contents': draw.reference,
|
||||
'MediaBox': pydyf.Array([0, 0, 10, 10]),
|
||||
}))
|
||||
|
||||
assert_pixels(document, '''
|
||||
__________
|
||||
__________
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__________
|
||||
__________
|
||||
''')
|
||||
|
||||
|
||||
def test_types():
|
||||
document = pydyf.PDF()
|
||||
|
||||
draw = pydyf.Stream()
|
||||
draw.rectangle(2, 2.0, '5', b'6')
|
||||
draw.set_line_width(2.3456)
|
||||
draw.fill()
|
||||
document.add_object(draw)
|
||||
|
||||
document.add_page(pydyf.Dictionary({
|
||||
'Type': '/Page',
|
||||
'Parent': document.pages.reference,
|
||||
'Contents': draw.reference,
|
||||
'MediaBox': pydyf.Array([0, 0, 10, 10]),
|
||||
}))
|
||||
|
||||
assert_pixels(document, '''
|
||||
__________
|
||||
__________
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__________
|
||||
__________
|
||||
''')
|
||||
|
||||
|
||||
def test_compress():
|
||||
document = pydyf.PDF()
|
||||
|
||||
draw = pydyf.Stream()
|
||||
draw.rectangle(2, 2, 5, 6)
|
||||
draw.fill()
|
||||
assert b'2 2 5 6' in draw.data
|
||||
|
||||
draw = pydyf.Stream(compress=True)
|
||||
draw.rectangle(2, 2, 5, 6)
|
||||
draw.fill()
|
||||
assert b'2 2 5 6' not in draw.data
|
||||
document.add_object(draw)
|
||||
|
||||
document.add_page(pydyf.Dictionary({
|
||||
'Type': '/Page',
|
||||
'Parent': document.pages.reference,
|
||||
'Contents': draw.reference,
|
||||
'MediaBox': pydyf.Array([0, 0, 10, 10]),
|
||||
}))
|
||||
|
||||
assert_pixels(document, '''
|
||||
__________
|
||||
__________
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__KKKKK___
|
||||
__________
|
||||
__________
|
||||
''')
|
||||
|
||||
|
||||
def test_text():
|
||||
document = pydyf.PDF()
|
||||
|
||||
font = pydyf.Dictionary({
|
||||
'Type': '/Font',
|
||||
'Subtype': '/Type1',
|
||||
'Name': '/F1',
|
||||
'BaseFont': '/Helvetica',
|
||||
'Encoding': '/MacRomanEncoding',
|
||||
})
|
||||
document.add_object(font)
|
||||
|
||||
draw = pydyf.Stream()
|
||||
draw.begin_text()
|
||||
draw.set_font_size('F1', 200)
|
||||
draw.text_matrix(1, 0, 0, 1, -20, 5)
|
||||
draw.show_text(pydyf.String('l'))
|
||||
draw.show_text(pydyf.String('É'))
|
||||
draw.end_text()
|
||||
|
||||
document.add_object(draw)
|
||||
|
||||
document.add_page(pydyf.Dictionary({
|
||||
'Type': '/Page',
|
||||
'Parent': document.pages.reference,
|
||||
'Contents': draw.reference,
|
||||
'MediaBox': pydyf.Array([0, 0, 10, 10]),
|
||||
'Resources': pydyf.Dictionary({
|
||||
'ProcSet': pydyf.Array(['/PDF', '/Text']),
|
||||
'Font': pydyf.Dictionary({'F1': font.reference}),
|
||||
}),
|
||||
}))
|
||||
|
||||
assert_pixels(document, '''
|
||||
KKKKKKKKKK
|
||||
KKKKKKKKKK
|
||||
KKKKKKKKKK
|
||||
KKKKKKKKKK
|
||||
KKKKKKKKKK
|
||||
__________
|
||||
__________
|
||||
__________
|
||||
__________
|
||||
__________
|
||||
''')
|
||||
|
||||
|
||||
def test_string_encoding():
|
||||
assert pydyf.String('abc').data == b'(abc)'
|
||||
assert pydyf.String('déf').data == b'<feff006400e90066>'
|
||||
assert pydyf.String('♡').data == b'<feff2661>'
|
||||
Loading…
Add table
Add a link
Reference in a new issue