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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
from PySide6.QtCore import QSettings, Qt, Slot
from PySide6.QtGui import QIntValidator
from PySide6.QtWidgets import QDialog
from PySide6.QtSerialBus import QCanBus, QCanBusDevice
from ui_connectdialog import Ui_ConnectDialog
class Settings():
def __init__(self):
self.plugin_name = ""
self.device_interface_name = ""
self.configurations = []
self.use_configuration_enabled = False
self.use_model_ring_buffer = True
self.model_ring_buffer_size = 1000
self.use_autoscroll = False
class ConnectDialog(QDialog):
def __init__(self, parent=None):
super().__init__(parent)
self.m_ui = Ui_ConnectDialog()
self.m_currentSettings = Settings()
self.m_interfaces = []
self.m_settings = QSettings("QtProject", "CAN example")
self.m_ui.setupUi(self)
self.m_ui.errorFilterEdit.setValidator(QIntValidator(0, 0x1FFFFFFF, self))
self.m_ui.loopbackBox.addItem("unspecified")
self.m_ui.loopbackBox.addItem("False", False)
self.m_ui.loopbackBox.addItem("True", True)
self.m_ui.receiveOwnBox.addItem("unspecified")
self.m_ui.receiveOwnBox.addItem("False", False)
self.m_ui.receiveOwnBox.addItem("True", True)
self.m_ui.canFdBox.addItem("False", False)
self.m_ui.canFdBox.addItem("True", True)
self.m_ui.dataBitrateBox.set_flexible_date_rate_enabled(True)
self.m_ui.okButton.clicked.connect(self.ok)
self.m_ui.cancelButton.clicked.connect(self.cancel)
self.m_ui.useConfigurationBox.toggled.connect(self.m_ui.configurationBox.setEnabled)
self.m_ui.pluginListBox.currentTextChanged.connect(self.plugin_changed)
self.m_ui.interfaceListBox.currentTextChanged.connect(self.interface_changed)
self.m_ui.ringBufferBox.stateChanged.connect(self._ring_buffer_changed)
self.m_ui.rawFilterEdit.hide()
self.m_ui.rawFilterLabel.hide()
self.m_ui.pluginListBox.addItems(QCanBus.instance().plugins())
self.restore_settings()
@Slot(int)
def _ring_buffer_changed(self, state):
self.m_ui.ringBufferLimitBox.setEnabled(state == Qt.CheckState.Checked.value)
def settings(self):
return self.m_currentSettings
def save_settings(self):
qs = self.m_settings
cur = self.m_currentSettings
qs.beginGroup("LastSettings")
qs.setValue("PluginName", self.m_currentSettings.plugin_name)
qs.setValue("DeviceInterfaceName", cur.device_interface_name)
qs.setValue("UseAutoscroll", cur.use_autoscroll)
qs.setValue("UseRingBuffer", cur.use_model_ring_buffer)
qs.setValue("RingBufferSize", cur.model_ring_buffer_size)
qs.setValue("UseCustomConfiguration", cur.use_configuration_enabled)
if cur.use_configuration_enabled:
qs.setValue("Loopback",
self.configuration_value(QCanBusDevice.LoopbackKey))
qs.setValue("ReceiveOwn",
self.configuration_value(QCanBusDevice.ReceiveOwnKey))
qs.setValue("ErrorFilter",
self.configuration_value(QCanBusDevice.ErrorFilterKey))
qs.setValue("BitRate",
self.configuration_value(QCanBusDevice.BitRateKey))
qs.setValue("CanFd",
self.configuration_value(QCanBusDevice.CanFdKey))
qs.setValue("DataBitRate",
self.configuration_value(QCanBusDevice.DataBitRateKey))
qs.endGroup()
def restore_settings(self):
qs = self.m_settings
cur = self.m_currentSettings
qs.beginGroup("LastSettings")
cur.plugin_name = qs.value("PluginName", "", str)
cur.device_interface_name = qs.value("DeviceInterfaceName", "", str)
cur.use_autoscroll = qs.value("UseAutoscroll", False, bool)
cur.use_model_ring_buffer = qs.value("UseRingBuffer", False, bool)
cur.model_ring_buffer_size = qs.value("RingBufferSize", 0, int)
cur.use_configuration_enabled = qs.value("UseCustomConfiguration", False, bool)
self.revert_settings()
if cur.use_configuration_enabled:
self.m_ui.loopbackBox.setCurrentText(qs.value("Loopback"))
self.m_ui.receiveOwnBox.setCurrentText(qs.value("ReceiveOwn"))
self.m_ui.errorFilterEdit.setText(qs.value("ErrorFilter"))
self.m_ui.bitrateBox.setCurrentText(qs.value("BitRate"))
self.m_ui.canFdBox.setCurrentText(qs.value("CanFd"))
self.m_ui.dataBitrateBox.setCurrentText(qs.value("DataBitRate"))
qs.endGroup()
self.update_settings()
@Slot(str)
def plugin_changed(self, plugin):
self.m_ui.interfaceListBox.clear()
interfaces, error_string = QCanBus.instance().availableDevices(plugin)
self.m_interfaces = interfaces
for info in self.m_interfaces:
self.m_ui.interfaceListBox.addItem(info.name())
@Slot(str)
def interface_changed(self, interface):
for info in self.m_interfaces:
if interface == info.name():
self.m_ui.deviceInfoBox.set_device_info(info)
return
self.m_ui.deviceInfoBox.clear()
@Slot()
def ok(self):
self.update_settings()
self.save_settings()
self.accept()
@Slot()
def cancel(self):
self.revert_settings()
self.reject()
def configuration_value(self, key):
result = None
for k, v in self.m_currentSettings.configurations:
if k == key:
result = v
break
if not result and (key == QCanBusDevice.LoopbackKey or key == QCanBusDevice.ReceiveOwnKey):
return "unspecified"
return str(result)
def revert_settings(self):
self.m_ui.pluginListBox.setCurrentText(self.m_currentSettings.plugin_name)
self.m_ui.interfaceListBox.setCurrentText(self.m_currentSettings.device_interface_name)
self.m_ui.useConfigurationBox.setChecked(self.m_currentSettings.use_configuration_enabled)
self.m_ui.ringBufferBox.setChecked(self.m_currentSettings.use_model_ring_buffer)
self.m_ui.ringBufferLimitBox.setValue(self.m_currentSettings.model_ring_buffer_size)
self.m_ui.autoscrollBox.setChecked(self.m_currentSettings.use_autoscroll)
value = self.configuration_value(QCanBusDevice.LoopbackKey)
self.m_ui.loopbackBox.setCurrentText(value)
value = self.configuration_value(QCanBusDevice.ReceiveOwnKey)
self.m_ui.receiveOwnBox.setCurrentText(value)
value = self.configuration_value(QCanBusDevice.ErrorFilterKey)
self.m_ui.errorFilterEdit.setText(value)
value = self.configuration_value(QCanBusDevice.BitRateKey)
self.m_ui.bitrateBox.setCurrentText(value)
value = self.configuration_value(QCanBusDevice.CanFdKey)
self.m_ui.canFdBox.setCurrentText(value)
value = self.configuration_value(QCanBusDevice.DataBitRateKey)
self.m_ui.dataBitrateBox.setCurrentText(value)
def update_settings(self):
self.m_currentSettings.plugin_name = self.m_ui.pluginListBox.currentText()
self.m_currentSettings.device_interface_name = self.m_ui.interfaceListBox.currentText()
self.m_currentSettings.use_configuration_enabled = self.m_ui.useConfigurationBox.isChecked()
self.m_currentSettings.use_model_ring_buffer = self.m_ui.ringBufferBox.isChecked()
self.m_currentSettings.model_ring_buffer_size = self.m_ui.ringBufferLimitBox.value()
self.m_currentSettings.use_autoscroll = self.m_ui.autoscrollBox.isChecked()
if self.m_currentSettings.use_configuration_enabled:
self.m_currentSettings.configurations.clear()
# process LoopBack
if self.m_ui.loopbackBox.currentIndex() != 0:
item = (QCanBusDevice.LoopbackKey, self.m_ui.loopbackBox.currentData())
self.m_currentSettings.configurations.append(item)
# process ReceiveOwnKey
if self.m_ui.receiveOwnBox.currentIndex() != 0:
item = (QCanBusDevice.ReceiveOwnKey, self.m_ui.receiveOwnBox.currentData())
self.m_currentSettings.configurations.append(item)
# process error filter
error_filter = self.m_ui.errorFilterEdit.text()
if error_filter:
ok = False
try:
int(error_filter) # check if value contains a valid integer
ok = True
except ValueError:
pass
if ok:
item = (QCanBusDevice.ErrorFilterKey, error_filter)
self.m_currentSettings.configurations.append(item)
# process raw filter list
if self.m_ui.rawFilterEdit.text():
pass # TODO current ui not sufficient to reflect this param
# process bitrate
bitrate = self.m_ui.bitrateBox.bit_rate()
if bitrate > 0:
item = (QCanBusDevice.BitRateKey, bitrate)
self.m_currentSettings.configurations.append(item)
# process CAN FD setting
fd_item = (QCanBusDevice.CanFdKey, self.m_ui.canFdBox.currentData())
self.m_currentSettings.configurations.append(fd_item)
# process data bitrate
data_bitrate = self.m_ui.dataBitrateBox.bit_rate()
if data_bitrate > 0:
item = (QCanBusDevice.DataBitRateKey, data_bitrate)
self.m_currentSettings.configurations.append(item)
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