def image_and_format_from_data(data):
ba = QByteArray(data)
buf = QBuffer(ba)
buf.open(QBuffer.ReadOnly)
r = QImageReader(buf)
fmt = bytes(r.format()).decode("utf-8")
return r.read(), fmt
def image_and_format_from_data(data):
' Create an image object from the specified data which should be a bytsestring and also return the format of the image '
ba = QByteArray(data)
buf = QBuffer(ba)
buf.open(QBuffer.ReadOnly)
r = QImageReader(buf)
fmt = bytes(r.format()).decode('utf-8')
return r.read(), fmt
def image_and_format_from_data(data):
' Create an image object from the specified data which should be a bytsestring and also return the format of the image '
ba = QByteArray(data)
buf = QBuffer(ba)
buf.open(QBuffer.ReadOnly)
r = QImageReader(buf)
fmt = bytes(r.format()).decode('utf-8')
return r.read(), fmt
def verify_theme(report):
must_use_qt()
report.bad = bad = {}
for name, path in iteritems(report.name_map):
reader = QImageReader(os.path.join(report.path, path))
img = reader.read()
if img.isNull():
bad[name] = reader.errorString()
return bool(bad)
def verify_theme(report):
must_use_qt()
report.bad = bad = {}
for name, path in report.name_map.iteritems():
reader = QImageReader(os.path.join(report.path, path))
img = reader.read()
if img.isNull():
bad[name] = reader.errorString()
return bool(bad)
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
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
def image_extensions():
if not hasattr(image_extensions, 'ans'):
image_extensions.ans = [
x.data().decode('utf-8')
for x in QImageReader.supportedImageFormats()
]
return image_extensions.ans
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(lambda x: x.data().decode('utf-8'),
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 = P('images/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)
has_headless = isosx or islinux
app = Application([], headless=has_headless)
self.assertGreaterEqual(
len(QFontDatabase().families()), 5,
'The QPA headless plugin is not able to locate enough system fonts via fontconfig'
)
if has_headless:
from calibre.ebooks.covers import create_cover
create_cover('xxx', ['yyy'])
na = QNetworkAccessManager()
self.assertTrue(hasattr(na, 'sslErrors'),
'Qt not compiled with openssl')
from PyQt5.QtWebKitWidgets import QWebView
if iswindows:
from PyQt5.Qt import QtWin
QtWin
QWebView()
del QWebView
del na
del app
def _insert_image(self):
filedialog = QFileDialog(self)
filedialog.setOption(QFileDialog.DontUseNativeDialog)
filedialog.setDefaultSuffix("*.jpg")
filedialog.setDirectory(self._cfg.get(
"TextEditor/LastPath", ".", system=True))
type_files = (
self.tr("JPEG (*.jpg)"),
self.tr("GIF (*.gif)"),
self.tr("PNG (*.png)"),
self.tr("BMP (*.bmp)"),
self.tr("All files (*)"),
)
filedialog.setNameFilters(type_files)
if filedialog.exec_():
path = filedialog.selectedFiles()[0]
fmt = path.split(".")[-1]
image = QImageReader(path).read()
self._doc.ins_image(image, fmt, image.width(), image.height())
self._cfg["SYSTEM", "TextEditor/LastPath"] = (
os.path.dirname(path))
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!')
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!')
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
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