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import io
import pytest
import qrcode
import qrcode.util
from qrcode.tests.consts import BLACK, RED, UNICODE_TEXT, WHITE
Image = pytest.importorskip("PIL.Image", reason="PIL is not installed")
if Image:
from qrcode.image.styledpil import StyledPilImage
from qrcode.image.styles import colormasks, moduledrawers
def test_render_pil():
qr = qrcode.QRCode()
qr.add_data(UNICODE_TEXT)
img = qr.make_image()
img.save(io.BytesIO())
assert isinstance(img.get_image(), Image.Image)
@pytest.mark.parametrize("back_color", ["TransParent", "red", (255, 195, 235)])
def test_render_pil_background(back_color):
qr = qrcode.QRCode()
qr.add_data(UNICODE_TEXT)
img = qr.make_image(back_color="TransParent")
img.save(io.BytesIO())
def test_render_pil_with_rgb_color_tuples():
qr = qrcode.QRCode()
qr.add_data(UNICODE_TEXT)
img = qr.make_image(back_color=(255, 195, 235), fill_color=(55, 95, 35))
img.save(io.BytesIO())
def test_render_with_pattern():
qr = qrcode.QRCode(mask_pattern=3)
qr.add_data(UNICODE_TEXT)
img = qr.make_image()
img.save(io.BytesIO())
def test_render_styled_Image():
qr = qrcode.QRCode(error_correction=qrcode.ERROR_CORRECT_L)
qr.add_data(UNICODE_TEXT)
img = qr.make_image(image_factory=StyledPilImage)
img.save(io.BytesIO())
def test_render_styled_with_embedded_image():
embedded_img = Image.new("RGB", (10, 10), color="red")
qr = qrcode.QRCode(error_correction=qrcode.ERROR_CORRECT_H)
qr.add_data(UNICODE_TEXT)
img = qr.make_image(image_factory=StyledPilImage, embedded_image=embedded_img)
img.save(io.BytesIO())
def test_render_styled_with_embedded_image_path(tmp_path):
tmpfile = str(tmp_path / "test.png")
embedded_img = Image.new("RGB", (10, 10), color="red")
embedded_img.save(tmpfile)
qr = qrcode.QRCode(error_correction=qrcode.ERROR_CORRECT_H)
qr.add_data(UNICODE_TEXT)
img = qr.make_image(image_factory=StyledPilImage, embedded_image_path=tmpfile)
img.save(io.BytesIO())
@pytest.mark.parametrize(
"drawer",
[
moduledrawers.CircleModuleDrawer,
moduledrawers.GappedSquareModuleDrawer,
moduledrawers.HorizontalBarsDrawer,
moduledrawers.RoundedModuleDrawer,
moduledrawers.SquareModuleDrawer,
moduledrawers.VerticalBarsDrawer,
],
)
def test_render_styled_with_drawer(drawer):
qr = qrcode.QRCode(error_correction=qrcode.ERROR_CORRECT_L)
qr.add_data(UNICODE_TEXT)
img = qr.make_image(
image_factory=StyledPilImage,
module_drawer=drawer(),
)
img.save(io.BytesIO())
@pytest.mark.parametrize(
"mask",
[
colormasks.SolidFillColorMask(),
colormasks.SolidFillColorMask(back_color=WHITE, front_color=RED),
colormasks.SolidFillColorMask(back_color=(255, 0, 255, 255), front_color=RED),
colormasks.RadialGradiantColorMask(
back_color=WHITE, center_color=BLACK, edge_color=RED
),
colormasks.SquareGradiantColorMask(
back_color=WHITE, center_color=BLACK, edge_color=RED
),
colormasks.HorizontalGradiantColorMask(
back_color=WHITE, left_color=RED, right_color=BLACK
),
colormasks.VerticalGradiantColorMask(
back_color=WHITE, top_color=RED, bottom_color=BLACK
),
colormasks.ImageColorMask(
back_color=WHITE, color_mask_image=Image.new("RGB", (10, 10), color="red")
),
],
)
def test_render_styled_with_mask(mask):
qr = qrcode.QRCode(error_correction=qrcode.ERROR_CORRECT_L)
qr.add_data(UNICODE_TEXT)
img = qr.make_image(image_factory=StyledPilImage, color_mask=mask)
img.save(io.BytesIO())
def test_embedded_image_and_error_correction(tmp_path):
"If an embedded image is specified, error correction must be the highest so the QR code is readable"
tmpfile = str(tmp_path / "test.png")
embedded_img = Image.new("RGB", (10, 10), color="red")
embedded_img.save(tmpfile)
qr = qrcode.QRCode(error_correction=qrcode.ERROR_CORRECT_L)
qr.add_data(UNICODE_TEXT)
with pytest.raises(ValueError):
qr.make_image(embedded_image_path=tmpfile)
with pytest.raises(ValueError):
qr.make_image(embedded_image=embedded_img)
qr = qrcode.QRCode(error_correction=qrcode.ERROR_CORRECT_M)
qr.add_data(UNICODE_TEXT)
with pytest.raises(ValueError):
qr.make_image(embedded_image_path=tmpfile)
with pytest.raises(ValueError):
qr.make_image(embedded_image=embedded_img)
qr = qrcode.QRCode(error_correction=qrcode.ERROR_CORRECT_Q)
qr.add_data(UNICODE_TEXT)
with pytest.raises(ValueError):
qr.make_image(embedded_image_path=tmpfile)
with pytest.raises(ValueError):
qr.make_image(embedded_image=embedded_img)
# The only accepted correction level when an embedded image is provided
qr = qrcode.QRCode(error_correction=qrcode.ERROR_CORRECT_H)
qr.add_data(UNICODE_TEXT)
qr.make_image(embedded_image_path=tmpfile)
qr.make_image(embedded_image=embedded_img)
def test_shortcut():
qrcode.make("image")
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