Pillow/Tests/test_qt_image_qapplication.py

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import pytest
from PIL import ImageQt
from .helper import assert_image_equal, hopper
if ImageQt.qt_is_installed:
from PIL.ImageQt import QPixmap
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if ImageQt.qt_version == "6":
from PyQt6.QtWidgets import QApplication, QHBoxLayout, QLabel, QWidget
elif ImageQt.qt_version == "side6":
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from PySide6.QtWidgets import QApplication, QHBoxLayout, QLabel, QWidget
elif ImageQt.qt_version == "5":
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from PyQt5.QtWidgets import QApplication, QHBoxLayout, QLabel, QWidget
elif ImageQt.qt_version == "side2":
from PySide2.QtWidgets import QApplication, QHBoxLayout, QLabel, QWidget
class Example(QWidget):
def __init__(self):
super().__init__()
img = hopper().resize((1000, 1000))
qimage = ImageQt.ImageQt(img)
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pixmap1 = ImageQt.QPixmap.fromImage(qimage)
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QHBoxLayout(self) # hbox
lbl = QLabel(self)
# Segfault in the problem
lbl.setPixmap(pixmap1.copy())
def roundtrip(expected):
result = ImageQt.fromqpixmap(ImageQt.toqpixmap(expected))
# Qt saves all pixmaps as rgb
assert_image_equal(result, expected.convert("RGB"))
@pytest.mark.skipif(not ImageQt.qt_is_installed, reason="Qt bindings are not installed")
def test_sanity(tmp_path):
# Segfault test
app = QApplication([])
ex = Example()
assert app # Silence warning
assert ex # Silence warning
for mode in ("1", "RGB", "RGBA", "L", "P"):
# to QPixmap
data = ImageQt.toqpixmap(hopper(mode))
assert isinstance(data, QPixmap)
assert not data.isNull()
# Test saving the file
tempfile = str(tmp_path / f"temp_{mode}.png")
data.save(tempfile)
# from QPixmap
roundtrip(hopper(mode))
app.quit()
app = None