def main():
import sys
app = QCoreApplication(sys.argv) # noqa: F841
f = QFile()
f.open(sys.stdout.fileno(), QIODevice.WriteOnly)
out = QTextStream(f)
serialPortInfos = QSerialPortInfo.availablePorts()
out << "Total number of ports available: " << len(serialPortInfos) << "\n"
blankString = "N/A"
description = ""
manufacturer = ""
serialNumber = ""
for serialPortInfo in serialPortInfos:
description = serialPortInfo.description()
manufacturer = serialPortInfo.manufacturer()
serialNumber = serialPortInfo.serialNumber()
out << "\nPort: " << serialPortInfo.portName(
) << "\nLocation: " << serialPortInfo.systemLocation(
) << "\nDescription: " << ( # noqa: E501
description if description else blankString
) << "\nManufacturer: " << (
manufacturer
if manufacturer else blankString) << "\nSerial number: " << (
serialNumber if serialNumber else blankString
) << "\nVendor Identifier: " << (
QByteArray.number(serialPortInfo.vendorIdentifier(), 16)
if serialPortInfo.hasVendorIdentifier() else blankString
) << "\nProduct Identifier: " << (
QByteArray.number(serialPortInfo.productIdentifier(), 16) if
serialPortInfo.hasProductIdentifier() else blankString) << "\n"
def embeded_image_scale_to_width(src_path, width_scalar):
qimage = QImage(src_path)
new_width = width_scalar * qimage.width()
qimage = qimage.scaledToWidth(new_width, Qt.SmoothTransformation)
data = QByteArray()
buffer = QBuffer(data)
buffer.open(QIODevice.WriteOnly)
qimage.save(buffer, "JPG")
base64_data = data.toBase64().data().decode('ascii')
return "data:image/jpeg;base64,{base64_data}".format(
base64_data=base64_data)
def requestStarted(self, job: QWebEngineUrlRequestJob) -> None:
webUiOrigin = QUrl(SCHEMENAME + ":")
GET: QByteArray = QByteArray(b"GET")
POST: QByteArray = QByteArray(b"POST")
method = job.requestMethod()
url = job.requestUrl()
initiator = job.initiator()
if method == GET and url == WebUiHandler.aboutUrl:
f = QFile(":/about.html", job)
f.open(QIODevice.ReadOnly)
job.reply(b"text/html", f)
elif (method == POST and url == WebUiHandler.aboutUrl
and initiator == webUiOrigin):
job.fail(QWebEngineUrlRequestJob.RequestAborted)
QApplication.exit()
else:
job.fail(QWebEngineUrlRequestJob.UrlNotFound)
def startDrag(self, supported_actions):
"""
Function that is called when we start dragging an item
This function set ups the mime data and creates a copy of the image
of the item that is show in cursor position while dragging action
is enabled
"""
index = self.currentIndex()
model = self.model()
item = model.itemFromIndex(index)
drag = QDrag(self)
mime_data = QMimeData()
mime_data.setData('item_text', QByteArray(str(item.text())))
mime_data.setData('item_size', QByteArray('%.1f %.1f' % (item.size.width(), item.size.height())))
url = QUrl.fromLocalFile(item.text())
mime_data.setUrls(url)
drag.setMimeData(mime_data)
pixmap = item.icon().pixmap(50, 50)
drag.setDragCursor(pixmap, Qt.CopyAction)
drag.start()
def updateClientProgress(self, numBytes):
self.bytesWritten += int(numBytes)
if self.bytesToWrite > 0 and self.tcpClient.bytesToWrite() <= 4 * PAYLOAD_SIZE:
self.bytesToWrite -= self.tcpClient.write(
QByteArray(min(self.bytesToWrite, PAYLOAD_SIZE), "@")
)
self.clientProgressBar.setMaximum(TOTAL_BYTES)
self.clientProgressBar.setValue(self.bytesWritten)
self.clientStatusLabel.setText(
self.tr("Sent %dMB" % (self.bytesWritten / (1024 * 1024),))
)
def base64_to_image(base64_string, image_format='PNG'):
"""
Converts base64 to QImage
:param base64_string: str
:param image_format: str
:return: QImage
"""
try:
ba = QByteArray.fromBase64(base64_string)
image = QImage.fromData(ba, image_format)
return image
except Exception:
return None
def sendFortune(self):
block = QByteArray()
out = QDataStream(block, QIODevice.WriteOnly)
out.setVersion(QDataStream.Qt_5_10)
message = random.choice(self.fortunes)
out.writeUInt32(len(message))
out.writeQString(message)
clientConnection = self.server.nextPendingConnection()
clientConnection.disconnected.connect(clientConnection.deleteLater)
clientConnection.write(block)
clientConnection.flush()
clientConnection.disconnectFromServer()
def _render_svg(self, svg_path, replace_color=None):
if issubclass(self._cls, QIcon) and not replace_color:
return QIcon(svg_path)
with open(svg_path, 'r+') as f:
data_content = f.read()
if replace_color is not None:
data_content = data_content.replace('#555555', replace_color)
self._render.load(QByteArray(data_content))
pix = QPixmap(128, 128)
pix.fill(Qt.transparent)
painter = QPainter(pix)
self._render.render(painter)
painter.end()
if issubclass(self._cls, QPixmap):
return pix
else:
return self._cls(pix)
def _write(self, reply_dict):
try:
json_reply = json.dumps(reply_dict)
except Exception:
msg = 'Error while serializing data: "{}"'.format(
traceback.format_exc())
logger.error(msg)
json_dict = {
'result': None,
'success': False,
'msg': msg,
'cmd': reply_dict.get('cmd', 'unknown')
}
json_reply = json.dumps(json_dict)
if self._socket and self._socket.state() == QTcpSocket.ConnectedState:
header = '{0}'.format(len(json_reply.encode())).zfill(
DccServer.HEADER_SIZE)
data = QByteArray('{}{}'.format(header, json_reply).encode())
self._socket.write(data)
return json_reply
def startTransfer(self):
# called when the TCP client connected to the loopback server
self.bytesToWrite = TOTAL_BYTES - int(
self.tcpClient.write(QByteArray(PAYLOAD_SIZE, "@"))
)
self.clientStatusLabel.setText(self.tr("Connected"))
def load_font(self,
prefix,
ttf_filename,
charmap_filename,
directory=None):
"""Loads a font file and the associated charmap.
If ``directory`` is None, the files will be looked for in ``./fonts/``.
Parameters
----------
prefix: str
Prefix string to be used when accessing a given font set
ttf_filename: str
Ttf font filename
charmap_filename: str
Charmap filename
directory: str or None, optional
Directory for font and charmap files
"""
def hook(obj):
result = {}
for key in obj:
try:
result[key] = chr(int(obj[key], 16))
except ValueError:
if int(obj[key], 16) > 0xffff:
# ignoring unsupported code in Python 2.7 32bit Windows
# ValueError: chr() arg not in range(0x10000)
pass
else:
raise FontError(u'Failed to load character '
'{0}:{1}'.format(key, obj[key]))
return result
if directory is None:
directory = os.path.join(
os.path.dirname(os.path.realpath(__file__)), 'fonts')
# Load font
if QApplication.instance() is not None:
with open(os.path.join(directory, ttf_filename),
'rb') as font_data:
id_ = QFontDatabase.addApplicationFontFromData(
QByteArray(font_data.read()))
font_data.close()
loadedFontFamilies = QFontDatabase.applicationFontFamilies(id_)
if loadedFontFamilies:
self.fontids[prefix] = id_
self.fontname[prefix] = loadedFontFamilies[0]
else:
raise FontError(u"Font at '{0}' appears to be empty. "
"If you are on Windows 10, please read "
"https://support.microsoft.com/"
"en-us/kb/3053676 "
"to know how to prevent Windows from blocking "
"the fonts that come with QtAwesome.".format(
os.path.join(directory, ttf_filename)))
with open(os.path.join(directory, charmap_filename), 'r') as codes:
self.charmap[prefix] = json.load(codes, object_hook=hook)
# Verify that vendorized fonts are not corrupt
if not SYSTEM_FONTS:
ttf_hash = MD5_HASHES.get(ttf_filename, None)
if ttf_hash is not None:
hasher = hashlib.md5()
with open(os.path.join(directory, ttf_filename),
'rb') as f:
content = f.read()
hasher.update(content)
ttf_calculated_hash_code = hasher.hexdigest()
if ttf_calculated_hash_code != ttf_hash:
raise FontError(u"Font is corrupt at: '{0}'".format(
os.path.join(directory, ttf_filename)))
