#!/usr/bin/env python3 # # Qtvcp widget # Copyright (c) 2017 Chris Morley # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. ############################################################################### import hal from qtvcp.widgets.widget_baseclass import _HalWidgetBase from PyQt5.QtCore import pyqtProperty, pyqtSlot, QVariant from qtvcp.widgets.simple_widgets import ScaledLabel from qtvcp import logger # Instantiate the libraries with global reference # LOG is for running code logging LOG = logger.getLogger(__name__) # Force the log level for this module # LOG.setLevel(logger.INFO) # One of DEBUG, INFO, WARNING, ERROR, CRITICAL ################################################################ class HALLabel(ScaledLabel, _HalWidgetBase): def __init__(self, parent=None): super(HALLabel, self).__init__(parent) self._textTemplate = '%f' self.istate = False self._pin_name = '' self._bit_pin_type = True self._s32_pin_type = False self._float_pin_type = False self._use_multi_label = False self._multi_label_list = ['Label 0','Label 1','Label 2'] def _hal_init(self): super()._hal_init() if self._pin_name == '': pname = self.HAL_NAME_ else: pname = self._pin_name if self._bit_pin_type: self.hal_pin = self.HAL_GCOMP_.newpin(pname, hal.HAL_BIT, hal.HAL_IN) self.hal_pin.value_changed.connect(lambda data: self._setText(data)) elif self._float_pin_type: self.hal_pin = self.HAL_GCOMP_.newpin(pname, hal.HAL_FLOAT, hal.HAL_IN) self.hal_pin.value_changed.connect(lambda data: self._setText(data)) elif self._s32_pin_type or self._use_multi_label: self.hal_pin = self.HAL_GCOMP_.newpin(pname, hal.HAL_S32, hal.HAL_IN) if self._s32_pin_type: self.hal_pin.value_changed.connect(lambda data: self._setText(data)) else: self.hal_pin.value_changed.connect(lambda data: self._changeText(data)) # display formatted text def _setText(self, data): try: tmpl = lambda s: str(self._textTemplate) % s self.setText(tmpl(data)) except Exception as e: LOG.warning('Widget "{}" format error: {}'.format(self.objectName(),e)) # select text from a list def _changeText(self, data): if data < 0 or data >= len(self._multi_label_list): self.setText('') else: self._setText(self._multi_label_list[data]) # one can connect signals to this widget to # feed an input that gets formatted by this widget. @pyqtSlot(float) @pyqtSlot(int) @pyqtSlot(bool) def setDisplay(self, data): self._setText(data) @pyqtSlot(int) def selectLabel(self,data): self._changeText(data) ######################################################################### # This is how designer can interact with our widget properties. # designer will show the pyqtProperty properties in the editor # it will use the get set and reset calls to do those actions ######################################################################## def _toggle_properties(self, picked): data = ('bit_pin_type', 's32_pin_type', 'float_pin_type','use_multi_label') for i in data: if not i == picked: self[i] = False def set_pin_name(self, value): self._pin_name = value def get_pin_name(self): return self._pin_name def reset_pin_name(self): self._pin_name = '' def set_bit_pin_type(self, value): self._bit_pin_type = value if value: self._toggle_properties('bit_pin_type') def get_bit_pin_type(self): return self._bit_pin_type def reset_bit_pin_type(self): self._bit_pin_type = '' def set_s32_pin_type(self, value): self._s32_pin_type = value if value: self._toggle_properties('s32_pin_type') def get_s32_pin_type(self): return self._s32_pin_type def reset_s32_pin_type(self): self._s32_pin_type = '' def set_float_pin_type(self, value): self._float_pin_type = value if value: self._toggle_properties('float_pin_type') def get_float_pin_type(self): return self._float_pin_type def reset_float_pin_type(self): self._float_pin_type = '' def set_use_multi_label(self, value): self._use_multi_label = value if value: self._toggle_properties('use_multi_label') def get_use_multi_label(self): return self._use_multi_label def reset_use_multi_label(self): self._use_multi_label = '' def set_textTemplate(self, data): self._textTemplate = data def get_textTemplate(self): return self._textTemplate def reset_textTemplate(self): self._textTemplate = '%d' def set_multi_label_l(self, data): self._multi_label_list = data def get_multi_label_l(self): return self._multi_label_list def reset_multi_label_l(self): self._multi_label_list = ['Label 0','Label 1','Label 2'] # designer will show these properties in this order: pin_name = pyqtProperty(str, get_pin_name, set_pin_name, reset_pin_name) bit_pin_type = pyqtProperty(bool, get_bit_pin_type, set_bit_pin_type, reset_bit_pin_type) s32_pin_type = pyqtProperty(bool, get_s32_pin_type, set_s32_pin_type, reset_s32_pin_type) float_pin_type = pyqtProperty(bool, get_float_pin_type, set_float_pin_type, reset_float_pin_type) use_multi_label = pyqtProperty(bool, get_use_multi_label, set_use_multi_label, reset_use_multi_label) textTemplate = pyqtProperty(str, get_textTemplate, set_textTemplate, reset_textTemplate) multi_label_list = pyqtProperty(QVariant.typeToName(QVariant.StringList), get_multi_label_l, set_multi_label_l, reset_multi_label_l) ############################## # required class boiler code # ############################## def __getitem__(self, item): return getattr(self, item) def __setitem__(self, item, value): return setattr(self, item, value)