Pillow/Tests/test_qt_image_toqimage.py
2019-06-13 18:54:46 +03:00

94 lines
2.8 KiB
Python

from .helper import PillowTestCase, hopper
from .test_imageqt import PillowQtTestCase
from PIL import ImageQt, Image
if ImageQt.qt_is_installed:
from PIL.ImageQt import QImage
try:
from PyQt5 import QtGui
from PyQt5.QtWidgets import QWidget, QHBoxLayout, QLabel, QApplication
QT_VERSION = 5
except (ImportError, RuntimeError):
try:
from PySide2 import QtGui
from PySide2.QtWidgets import QWidget, QHBoxLayout, QLabel, QApplication
QT_VERSION = 5
except (ImportError, RuntimeError):
try:
from PyQt4 import QtGui
from PyQt4.QtGui import QWidget, QHBoxLayout, QLabel, QApplication
QT_VERSION = 4
except (ImportError, RuntimeError):
from PySide import QtGui
from PySide.QtGui import QWidget, QHBoxLayout, QLabel, QApplication
QT_VERSION = 4
class TestToQImage(PillowQtTestCase, PillowTestCase):
def test_sanity(self):
for mode in ("RGB", "RGBA", "L", "P", "1"):
src = hopper(mode)
data = ImageQt.toqimage(src)
self.assertIsInstance(data, QImage)
self.assertFalse(data.isNull())
# reload directly from the qimage
rt = ImageQt.fromqimage(data)
if mode in ("L", "P", "1"):
self.assert_image_equal(rt, src.convert("RGB"))
else:
self.assert_image_equal(rt, src)
if mode == "1":
# BW appears to not save correctly on QT4 and QT5
# kicks out errors on console:
# libpng warning: Invalid color type/bit depth combination
# in IHDR
# libpng error: Invalid IHDR data
continue
# Test saving the file
tempfile = self.tempfile("temp_{}.png".format(mode))
data.save(tempfile)
# Check that it actually worked.
reloaded = Image.open(tempfile)
# Gray images appear to come back in palette mode.
# They're roughly equivalent
if QT_VERSION == 4 and mode == "L":
src = src.convert("P")
self.assert_image_equal(reloaded, src)
def test_segfault(self):
app = QApplication([])
ex = Example()
assert app # Silence warning
assert ex # Silence warning
if ImageQt.qt_is_installed:
class Example(QWidget):
def __init__(self):
super(Example, self).__init__()
img = hopper().resize((1000, 1000))
qimage = ImageQt.ImageQt(img)
pixmap1 = QtGui.QPixmap.fromImage(qimage)
QHBoxLayout(self) # hbox
lbl = QLabel(self)
# Segfault in the problem
lbl.setPixmap(pixmap1.copy())