本文整理汇总了Python中PyQt5.Qt.QImageReader.supportedImageFormats方法的典型用法代码示例。如果您正苦于以下问题：Python QImageReader.supportedImageFormats方法的具体用法？Python QImageReader.supportedImageFormats怎么用？Python QImageReader.supportedImageFormats使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类PyQt5.Qt.QImageReader的用法示例。
在下文中一共展示了QImageReader.supportedImageFormats方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_qt
# 需要导入模块: from PyQt5.Qt import QImageReader [as 别名]
# 或者: from PyQt5.Qt.QImageReader import supportedImageFormats [as 别名]
def test_qt(self):
from PyQt5.Qt import QImageReader, QNetworkAccessManager, QFontDatabase
from calibre.utils.img import image_from_data, image_to_data, test
# Ensure that images can be read before QApplication is constructed.
# Note that this requires QCoreApplication.libraryPaths() to return the
# path to the Qt plugins which it always does in the frozen build,
# because the QT_PLUGIN_PATH env var is set. On non-frozen builds,
# it should just work because the hard-coded paths of the Qt
# installation should work. If they do not, then it is a distro
# problem.
fmts = set(map(unicode, QImageReader.supportedImageFormats()))
testf = {'jpg', 'png', 'svg', 'ico', 'gif'}
self.assertEqual(testf.intersection(fmts), testf, "Qt doesn't seem to be able to load some of its image plugins. Available plugins: %s" % fmts)
data = I('blank.png', allow_user_override=False, data=True)
img = image_from_data(data)
image_from_data(P('catalog/mastheadImage.gif', allow_user_override=False, data=True))
for fmt in 'png bmp jpeg'.split():
d = image_to_data(img, fmt=fmt)
image_from_data(d)
# Run the imaging tests
test()
from calibre.gui2 import Application
os.environ.pop('DISPLAY', None)
app = Application([], headless=islinux)
self.assertGreaterEqual(len(QFontDatabase().families()), 5, 'The QPA headless plugin is not able to locate enough system fonts via fontconfig')
na = QNetworkAccessManager()
self.assertTrue(hasattr(na, 'sslErrors'), 'Qt not compiled with openssl')
from PyQt5.QtWebKitWidgets import QWebView
QWebView()
del QWebView
del na
del app示例2: test_qt
# 需要导入模块: from PyQt5.Qt import QImageReader [as 别名]
# 或者: from PyQt5.Qt.QImageReader import supportedImageFormats [as 别名]
def test_qt():
from calibre.gui2 import Application
from PyQt5.Qt import (QImageReader, QNetworkAccessManager, QFontDatabase)
from PyQt5.QtWebKitWidgets import QWebView
os.environ.pop('DISPLAY', None)
app = Application([], headless=islinux)
if len(QFontDatabase().families()) < 5:
raise RuntimeError('The QPA headless plugin is not able to locate enough system fonts via fontconfig')
fmts = set(map(unicode, QImageReader.supportedImageFormats()))
testf = set(['jpg', 'png', 'mng', 'svg', 'ico', 'gif'])
if testf.intersection(fmts) != testf:
raise RuntimeError(
"Qt doesn't seem to be able to load its image plugins")
QWebView()
del QWebView
na = QNetworkAccessManager()
if not hasattr(na, 'sslErrors'):
raise RuntimeError('Qt not compiled with openssl')
del na
del app
print ('Qt OK!')示例3: image_extensions
# 需要导入模块: from PyQt5.Qt import QImageReader [as 别名]
# 或者: from PyQt5.Qt.QImageReader import supportedImageFormats [as 别名]
def image_extensions():
if not hasattr(image_extensions, 'ans'):
image_extensions.ans = [as_unicode_polyglot(x) for x in QImageReader.supportedImageFormats()]
return image_extensions.ans示例4: image_extensions
# 需要导入模块: from PyQt5.Qt import QImageReader [as 别名]
# 或者: from PyQt5.Qt.QImageReader import supportedImageFormats [as 别名]
def image_extensions():
if not hasattr(image_extensions, 'ans'):
image_extensions.ans = [bytes(x).decode('utf-8') for x in QImageReader.supportedImageFormats()]
return image_extensions.ans