def get(self, tile):
future = Future()
url = QUrl(tile.url)
request = QNetworkRequest(url)
# Modified by Jean 2020/05/21 to support tianditu.gov.cn
# request.setRawHeader(b"User-Agent", b"OWMap/1.0")
request.setRawHeader(b"User-Agent", b"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0")
request.setAttribute(
QNetworkRequest.CacheLoadControlAttribute,
QNetworkRequest.PreferCache
)
request.setAttribute(QNetworkRequest.FollowRedirectsAttribute, True)
request.setMaximumRedirectsAllowed(5)
# Future yielding a QNetworkReply when finished.
reply = self._netmanager.get(request)
future._reply = reply
future._tile = tile
@future.add_done_callback
def abort_on_cancel(f):
# abort the network request on future.cancel()
if f.cancelled() and f._reply is not None:
f._reply.abort()
def on_reply_ready(reply, future):
# type: (QNetworkReply, Future) -> None
# schedule deferred delete to ensure the reply is closed
# otherwise we will leak file/socket descriptors
reply.deleteLater()
future._reply = None
with closing(reply):
if not future.set_running_or_notify_cancel():
return
if reply.error() != QNetworkReply.NoError:
# XXX Maybe convert the error into standard http and
# urllib exceptions.
future.set_exception(Exception(reply.errorString()))
return
try:
image = Image.open(BytesIO(reply.readAll()))
except Exception as e:
future.set_exception(e)
else:
tile.disc_cache = reply.attribute(
QNetworkRequest.SourceIsFromCacheAttribute)
future.set_result(image)
reply.finished.connect(partial(on_reply_ready, reply, future))
return future
def get(self, tile):
future = Future()
url = QUrl(tile.url)
request = QNetworkRequest(url)
# Modified by Jean 2020/05/21 to support tianditu.gov.cn
# request.setRawHeader(b"User-Agent", b"OWMap/1.0")
# request.setRawHeader(b"User-Agent", b"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0")
request.setRawHeader(
b'User-Agent',
b'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36'
)
# Updated by Jean @ 2022/1/6
request.setRawHeader(
b'Accept',
b'image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8'
)
request.setRawHeader(b'Accept-Encoding', b'gzip, deflate, br')
request.setRawHeader(b'Accept-Language', b'zh-CN,zh;q=0.9')
request.setRawHeader(
b'sec-ch-ua',
b'" Not;A Brand";v="99", "Google Chrome";v="91", "Chromium";v="91"'
)
request.setRawHeader(b'sec-ch-ua-mobile', b'?0')
request.setRawHeader(b'Upgrade-Insecure-Requests', b'1')
request.setAttribute(QNetworkRequest.CacheLoadControlAttribute,
QNetworkRequest.PreferCache)
request.setAttribute(QNetworkRequest.FollowRedirectsAttribute, True)
request.setMaximumRedirectsAllowed(5)
# Future yielding a QNetworkReply when finished.
reply = self._netmanager.get(request)
future._reply = reply
future._tile = tile
@future.add_done_callback
def abort_on_cancel(f):
# abort the network request on future.cancel()
if f.cancelled() and f._reply is not None:
f._reply.abort()
def on_reply_ready(reply, future):
# type: (QNetworkReply, Future) -> None
# schedule deferred delete to ensure the reply is closed
# otherwise we will leak file/socket descriptors
reply.deleteLater()
future._reply = None
with closing(reply):
if not future.set_running_or_notify_cancel():
return
if reply.error() != QNetworkReply.NoError:
# XXX Maybe convert the error into standard http and
# urllib exceptions.
future.set_exception(Exception(reply.errorString()))
return
try:
image = Image.open(BytesIO(reply.readAll()))
except Exception as e:
future.set_exception(e)
else:
tile.disc_cache = reply.attribute(
QNetworkRequest.SourceIsFromCacheAttribute)
future.set_result(image)
reply.finished.connect(partial(on_reply_ready, reply, future))
return future