forked from josch/img2pdf
Test cases for transparency
This commit is contained in:
Tamás Zahola
parent
18c8825f41
commit
6e6987c982
1 changed files with 146 additions and 52 deletions
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@ -402,6 +402,23 @@ def compare_pdfimages_tiff(tmpdir, img, pdf):
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def compare_pdfimages_png(tmpdir, img, pdf, exact=True, icc=False):
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subprocess.check_call(["pdfimages", "-png", str(pdf), str(tmpdir / "images")])
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# images-001.png is the grayscale SMask image (the original alpha channel)
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if os.path.isfile(tmpdir / "images-001.png"):
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subprocess.check_call(
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[
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"convert",
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str(tmpdir / "images-000.png"),
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str(tmpdir / "images-001.png"),
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"-compose",
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"copy-opacity",
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"-composite",
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str(tmpdir / "composite.png")
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]
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)
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(tmpdir / "images-000.png").unlink()
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(tmpdir / "images-001.png").unlink()
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os.rename(tmpdir / "composite.png", tmpdir / "images-000.png")
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if exact:
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if icc:
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raise Exception("not exact with icc")
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@ -4230,6 +4247,86 @@ def png_rgb8_pdf(tmp_path_factory, png_rgb8_img, request):
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out_pdf.unlink()
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@pytest.fixture(scope="session", params=["internal", "pikepdf", "pdfrw"])
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def png_rgba8_pdf(tmp_path_factory, png_rgba8_img, request):
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out_pdf = tmp_path_factory.mktemp("png_rgba8_pdf") / "out.pdf"
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subprocess.check_call(
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[
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"src/img2pdf.py",
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"--producer=",
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"--nodate",
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"--engine=" + request.param,
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"--output=" + str(out_pdf),
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str(png_rgba8_img),
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]
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)
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with pikepdf.open(str(out_pdf)) as p:
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assert (
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p.pages[0].Contents.read_bytes()
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== b"q\n45.0000 0 0 45.0000 0.0000 0.0000 cm\n/Im0 Do\nQ"
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)
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assert p.pages[0].Resources.XObject.Im0.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.ColorSpace == "/DeviceRGB"
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assert p.pages[0].Resources.XObject.Im0.DecodeParms.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.DecodeParms.Colors == 3
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assert p.pages[0].Resources.XObject.Im0.DecodeParms.Predictor == 15
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assert p.pages[0].Resources.XObject.Im0.Filter == "/FlateDecode"
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assert p.pages[0].Resources.XObject.Im0.Height == 60
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assert p.pages[0].Resources.XObject.Im0.Width == 60
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assert p.pages[0].Resources.XObject.Im0.SMask is not None
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assert p.pages[0].Resources.XObject.Im0.SMask.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.SMask.ColorSpace == "/DeviceGray"
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assert p.pages[0].Resources.XObject.Im0.SMask.DecodeParms.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.SMask.DecodeParms.Colors == 1
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assert p.pages[0].Resources.XObject.Im0.SMask.DecodeParms.Predictor == 15
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assert p.pages[0].Resources.XObject.Im0.SMask.Filter == "/FlateDecode"
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assert p.pages[0].Resources.XObject.Im0.SMask.Height == 60
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assert p.pages[0].Resources.XObject.Im0.SMask.Width == 60
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yield out_pdf
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out_pdf.unlink()
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@pytest.fixture(scope="session", params=["internal", "pikepdf", "pdfrw"])
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def gif_transparent_pdf(tmp_path_factory, gif_transparent_img, request):
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out_pdf = tmp_path_factory.mktemp("gif_transparent_pdf") / "out.pdf"
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subprocess.check_call(
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[
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"src/img2pdf.py",
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"--producer=",
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"--nodate",
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"--engine=" + request.param,
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"--output=" + str(out_pdf),
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str(gif_transparent_img),
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]
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)
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with pikepdf.open(str(out_pdf)) as p:
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assert (
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p.pages[0].Contents.read_bytes()
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== b"q\n45.0000 0 0 45.0000 0.0000 0.0000 cm\n/Im0 Do\nQ"
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)
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assert p.pages[0].Resources.XObject.Im0.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.ColorSpace == "/DeviceRGB"
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assert p.pages[0].Resources.XObject.Im0.DecodeParms.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.DecodeParms.Colors == 3
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assert p.pages[0].Resources.XObject.Im0.DecodeParms.Predictor == 15
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assert p.pages[0].Resources.XObject.Im0.Filter == "/FlateDecode"
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assert p.pages[0].Resources.XObject.Im0.Height == 60
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assert p.pages[0].Resources.XObject.Im0.Width == 60
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assert p.pages[0].Resources.XObject.Im0.SMask is not None
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assert p.pages[0].Resources.XObject.Im0.SMask.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.SMask.ColorSpace == "/DeviceGray"
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assert p.pages[0].Resources.XObject.Im0.SMask.DecodeParms.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.SMask.DecodeParms.Colors == 1
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assert p.pages[0].Resources.XObject.Im0.SMask.DecodeParms.Predictor == 15
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assert p.pages[0].Resources.XObject.Im0.SMask.Filter == "/FlateDecode"
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assert p.pages[0].Resources.XObject.Im0.SMask.Height == 60
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assert p.pages[0].Resources.XObject.Im0.SMask.Width == 60
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yield out_pdf
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out_pdf.unlink()
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@pytest.fixture(scope="session", params=["internal", "pikepdf", "pdfrw"])
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def png_rgb16_pdf(tmp_path_factory, png_rgb16_img, request):
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out_pdf = tmp_path_factory.mktemp("png_rgb16_pdf") / "out.pdf"
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@ -4410,6 +4507,46 @@ def png_gray8_pdf(tmp_path_factory, tmp_gray8_png, request):
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out_pdf.unlink()
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@pytest.fixture(scope="session", params=["internal", "pikepdf", "pdfrw"])
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def png_gray8a_pdf(tmp_path_factory, png_gray8a_img, request):
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out_pdf = tmp_path_factory.mktemp("png_gray8a_pdf") / "out.pdf"
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subprocess.check_call(
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[
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"src/img2pdf.py",
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"--producer=",
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"--nodate",
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"--engine=" + request.param,
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"--output=" + str(out_pdf),
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str(png_gray8a_img),
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]
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)
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with pikepdf.open(str(out_pdf)) as p:
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assert (
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p.pages[0].Contents.read_bytes()
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== b"q\n45.0000 0 0 45.0000 0.0000 0.0000 cm\n/Im0 Do\nQ"
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)
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assert p.pages[0].Resources.XObject.Im0.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.ColorSpace == "/DeviceGray"
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assert p.pages[0].Resources.XObject.Im0.DecodeParms.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.DecodeParms.Colors == 1
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assert p.pages[0].Resources.XObject.Im0.DecodeParms.Predictor == 15
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assert p.pages[0].Resources.XObject.Im0.Filter == "/FlateDecode"
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assert p.pages[0].Resources.XObject.Im0.Height == 60
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assert p.pages[0].Resources.XObject.Im0.Width == 60
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assert p.pages[0].Resources.XObject.Im0.SMask is not None
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assert p.pages[0].Resources.XObject.Im0.SMask.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.SMask.ColorSpace == "/DeviceGray"
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assert p.pages[0].Resources.XObject.Im0.SMask.DecodeParms.BitsPerComponent == 8
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assert p.pages[0].Resources.XObject.Im0.SMask.DecodeParms.Colors == 1
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assert p.pages[0].Resources.XObject.Im0.SMask.DecodeParms.Predictor == 15
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assert p.pages[0].Resources.XObject.Im0.SMask.Filter == "/FlateDecode"
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assert p.pages[0].Resources.XObject.Im0.SMask.Height == 60
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assert p.pages[0].Resources.XObject.Im0.SMask.Width == 60
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yield out_pdf
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out_pdf.unlink()
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@pytest.fixture(scope="session", params=["internal", "pikepdf", "pdfrw"])
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def png_gray16_pdf(tmp_path_factory, tmp_gray16_png, request):
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out_pdf = tmp_path_factory.mktemp("png_gray16_pdf") / "out.pdf"
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@ -5416,24 +5553,9 @@ def test_png_rgb16(tmp_path_factory, png_rgb16_img, png_rgb16_pdf):
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sys.platform in ["win32"],
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reason="test utilities not available on Windows and MacOS",
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)
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@pytest.mark.parametrize("engine", ["internal", "pikepdf", "pdfrw"])
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def test_png_rgba8(tmp_path_factory, png_rgba8_img, engine):
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out_pdf = tmp_path_factory.mktemp("png_rgba8") / "out.pdf"
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assert (
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0
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!= subprocess.run(
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[
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"src/img2pdf.py",
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"--producer=",
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"--nodate",
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"--engine=" + engine,
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"--output=" + str(out_pdf),
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str(png_rgba8_img),
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]
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).returncode
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)
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out_pdf.unlink()
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def test_png_rgba8(tmp_path_factory, png_rgba8_img, png_rgba8_pdf):
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tmpdir = tmp_path_factory.mktemp("png_rgba8")
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compare_pdfimages_png(tmpdir, png_rgba8_img, png_rgba8_pdf)
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@pytest.mark.skipif(
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sys.platform in ["win32"],
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@ -5462,23 +5584,9 @@ def test_png_rgba16(tmp_path_factory, png_rgba16_img, engine):
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sys.platform in ["win32"],
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reason="test utilities not available on Windows and MacOS",
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)
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@pytest.mark.parametrize("engine", ["internal", "pikepdf", "pdfrw"])
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def test_png_gray8a(tmp_path_factory, png_gray8a_img, engine):
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out_pdf = tmp_path_factory.mktemp("png_gray8a") / "out.pdf"
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assert (
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0
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!= subprocess.run(
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[
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"src/img2pdf.py",
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"--producer=",
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"--nodate",
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"--engine=" + engine,
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"--output=" + str(out_pdf),
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str(png_gray8a_img),
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]
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).returncode
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)
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out_pdf.unlink()
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def test_png_gray8a(tmp_path_factory, png_gray8a_img, png_gray8a_pdf):
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tmpdir = tmp_path_factory.mktemp("png_gray8a")
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compare_pdfimages_png(tmpdir, png_gray8a_img, png_gray8a_pdf)
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@pytest.mark.skipif(
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@ -5644,23 +5752,9 @@ def test_png_icc(tmp_path_factory, png_icc_img, png_icc_pdf):
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sys.platform in ["win32"],
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reason="test utilities not available on Windows and MacOS",
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)
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@pytest.mark.parametrize("engine", ["internal", "pikepdf", "pdfrw"])
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def test_gif_transparent(tmp_path_factory, gif_transparent_img, engine):
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out_pdf = tmp_path_factory.mktemp("gif_transparent") / "out.pdf"
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assert (
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0
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!= subprocess.run(
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[
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"src/img2pdf.py",
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"--producer=",
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"--nodate",
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"--engine=" + engine,
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"--output=" + str(out_pdf),
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str(gif_transparent_img),
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]
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).returncode
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)
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out_pdf.unlink()
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def test_gif_transparent(tmp_path_factory, gif_transparent_img, gif_transparent_pdf):
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tmpdir = tmp_path_factory.mktemp("gif_transparent")
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compare_pdfimages_png(tmpdir, gif_transparent_img, gif_transparent_pdf)
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@pytest.mark.skipif(
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