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plakativ/test.py

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import pytest
import plakativ
import tempfile
import fitz
import fitz.utils
import os
import pdfrw
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def mm_to_pt(length):
return (72.0 * length) / 25.4
def _create_pdf(width, height):
return tmpfile
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@pytest.fixture(scope="module")
def infile_a4_portrait():
tmpfile = _create_pdf(mm_to_pt(210), mm_to_pt(297))
yield tmpfile
os.unlink(tmpfile)
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@pytest.fixture(scope="module")
def infile_custom_portrait():
tmpfile = _create_pdf(mm_to_pt(200), mm_to_pt(400))
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yield tmpfile
os.unlink(tmpfile)
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@pytest.fixture(scope="module")
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def infile_a4_landscape():
tmpfile = _create_pdf(mm_to_pt(297), mm_to_pt(210))
yield tmpfile
os.unlink(tmpfile)
@pytest.fixture(scope="module")
def infile_custom_landscape():
tmpfile = _create_pdf(mm_to_pt(400), mm_to_pt(200))
yield tmpfile
os.unlink(tmpfile)
@pytest.fixture(scope="module")
def infile_custom_square():
tmpfile = _create_pdf(mm_to_pt(300), mm_to_pt(300))
yield tmpfile
os.unlink(tmpfile)
_formats = {
"dina4_portrait": (210, 297),
"dina4_landscape": (297, 210),
"dina3_portrait": (297, 420),
"dina3_landscape": (420, 297),
}
@pytest.mark.parametrize(
"postersize,input_pagesize,output_pagesize,expected",
[
(
_formats["dina3_portrait"],
_formats["dina4_portrait"],
None,
[
(
["0", "380.8549", "337.72779", "841.8898"],
["1.4141413", "0", "0", "1.4141413", "117.68077", "-538.5826"],
),
(
["257.5478", "380.8549", "595.2756", "841.8898"],
["1.4141413", "0", "0", "1.4141413", "-364.20893", "-538.5826"],
),
(
["0", "0", "337.72779", "461.03489"],
["1.4141413", "0", "0", "1.4141413", "117.68077", "189.9213"],
),
(
["257.5478", "0", "595.2756", "461.03489"],
["1.4141413", "0", "0", "1.4141413", "-364.20893", "189.9213"],
),
],
),
(
_formats["dina3_landscape"],
_formats["dina4_landscape"],
None,
[
(
["0", "257.5478", "461.03489", "595.2756"],
["1.4141413", "0", "0", "1.4141413", "189.9213", "-364.20893"],
),
(
["380.8549", "257.5478", "841.8898", "595.2756"],
["1.4141413", "0", "0", "1.4141413", "-538.5826", "-364.20893"],
),
(
["0", "0", "461.03489", "337.72779"],
["1.4141413", "0", "0", "1.4141413", "189.9213", "117.68074"],
),
(
["380.8549", "0", "841.8898", "337.72779"],
["1.4141413", "0", "0", "1.4141413", "-538.5826", "117.68074"],
),
],
),
],
)
def test_cases(postersize, input_pagesize, output_pagesize, expected):
width = mm_to_pt(input_pagesize[0])
height = mm_to_pt(input_pagesize[1])
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doc = fitz.open()
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page = doc.newPage(pno=-1, width=width, height=height)
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img = page.newShape()
red = fitz.utils.getColor("red")
green = fitz.utils.getColor("green")
blue = fitz.utils.getColor("blue")
orange = fitz.utils.getColor("orange")
img.insertText(fitz.Point(97, 620), "A", fontsize=600, color=blue)
img.commit()
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img.drawLine(fitz.Point(0, 0), fitz.Point(width, height))
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img.finish(color=red)
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img.drawLine(fitz.Point(0, height), fitz.Point(width, 0))
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img.finish(color=green)
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img.drawRect(fitz.Rect(fitz.Point(0, 0), fitz.Point(width, height)))
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img.finish(color=orange)
img.commit()
fd, infile = tempfile.mkstemp(
prefix="plakativ", suffix="%f_%f.pdf" % (width, height)
)
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os.close(fd)
doc.save(infile, pretty=True, expand=255)
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fd, outfile = tempfile.mkstemp(prefix="plakativ")
os.close(fd)
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plakativ.compute_layout(infile, outfile, mode="size", size=postersize, border=(20, 20, 20, 20))
os.unlink(infile)
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reader = pdfrw.PdfReader(outfile)
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os.unlink(outfile)
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pages = reader.Root.Pages.Kids
assert len(pages) == len(expected)
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for page, (bbox, matrix) in zip(pages, expected):
assert page.Resources.XObject.fzFrm0.BBox == bbox
assert page.Resources.XObject.fzFrm0.Matrix == matrix