#!/usr/bin/env python3 # qtvcp # # 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. # ################################################################################# from PyQt5 import QtCore, QtWidgets from qtvcp.widgets.widget_baseclass import _HalWidgetBase from qtvcp.core import Status, Info from qtvcp import logger # Instantiate the libraries with global reference # STATUS gives us status messages from linuxcnc # INFO is INI file details # LOG is for running code logging STATUS = Status() INFO = Info() LOG = logger.getLogger(__name__) # Force the log level for this module #LOG.setLevel(logger.DEBUG) # One of DEBUG, INFO, WARNING, ERROR, CRITICAL class JogIncrements(QtWidgets.QComboBox, _HalWidgetBase): def __init__(self, parent=None): super(JogIncrements, self).__init__(parent) self.linear = True self._block_signal = False # Default to continuous jogging (selection 0) # with a combo box display, it's assumed the showing increment # is valid - so we must update the rate if the units mode changes. def _hal_init(self): if self.linear: for item in (INFO.JOG_INCREMENTS): self.addItem(item) STATUS.connect('metric-mode-changed', self._switch_units) STATUS.connect('jogincrement-changed', lambda w, value, text: self._checkincrements(value, text)) else: for item in (INFO.ANGULAR_INCREMENTS): self.addItem(item) STATUS.connect('jogincrement-angular-changed', lambda w, value, text: self._checkincrements(value, text)) self.currentIndexChanged.connect(self.selectionchange) self.selectionchange(0) # if units switch - current jog rate in invalid def _switch_units(self, w, data): if self.currentIndex() > 0: self.selectionchange(-1) # search the combo box for the value STATUS sent us # If there is a match, change the combobox to it # otherwise display a blank in the combobox. # in this way if some other widget sets a rate change # the combo box doesn't lie def _checkincrements(self,value, text): for count in range(self.count()): label = self.itemText(count) try: number = float(label.rstrip(" inchmuildeg").lower()) except: number = None # assume continuous jogging (selection 0) if number is None: machn_incr = 0 else: if self.linear: machn_incr = self.parse_increment(label) else: machn_incr = self.parse_angular_increment(label) #print count,self.itemText(count), machn_incr,value if machn_incr is not None and round(machn_incr,6) == round(value,6): self._block_signal = True self.setCurrentIndex(count) self._block_signal = False return self.setCurrentIndex(-1) def selectionchange(self, i): if self._block_signal: return text = str(self.currentText()) if i == -1 and text == '': return try: # continuous jog (selection 0) if i == 0: inc = 0 else: if self.linear: inc = self.parse_increment(text) else: inc = self.parse_angular_increment(text) except Exception as e: LOG.debug('Exception parsing increment - setting increment to None', exc_info=e) inc = None if inc is None: LOG.warning("parsed: text not recognized : {} Increment: {}".format(text, inc)) return if self.linear: LOG.debug("Linear Current index: {} Increment: {} , selection changed {}".format(i, inc, text)) STATUS.set_jog_increments(inc, text) else: LOG.debug("Angular Current index: {} Increment: {} , selection changed {}".format(i, inc, text)) STATUS.set_jog_increment_angular(inc, text) def parse_angular_increment(self, jogincr): scale = 1 if jogincr.endswith("deg"): scale = 1 incr = jogincr.rstrip(" deg") incr = float(incr) return incr * scale # We convert INI parced increments to machine units def parse_increment(self, jogincr): if jogincr.endswith("mm"): scale = self.conversion(1) elif jogincr.endswith("cm"): scale = self.conversion(10) elif jogincr.endswith("um"): scale = self.conversion(.001) elif jogincr.endswith("in") or jogincr.endswith("inch"): scale = self.conversion(1., metric = False) elif jogincr.endswith("mil"): scale = self.conversion(.001, metric = False) else: scale = 1 incr = jogincr.rstrip(" inchmuil") try: if "/" in incr: p, q = incr.split("/") incr = float(p) / float(q) else: incr = float(incr) except: return None LOG.debug("parsed: text: {} Increment: {} scaled: {}".format(jogincr, incr, (incr * scale))) return incr * scale # This does the conversion # calling function must tell us if the data is metric or not. def conversion(self, data, metric = True): if STATUS.is_metric_mode(): if metric: return INFO.convert_metric_to_machine(data) else: return INFO.convert_imperial_to_machine(data) else: if metric: return INFO.convert_metric_to_machine(data) else: return INFO.convert_imperial_to_machine(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 # # _toggle_properties makes it so we can only select one option ######################################################################## def _toggle_properties(self, picked): data = ('linear') for i in data: if not i == picked: self[i+'_option'] = False # BOOL VARIABLES---------------------- def set_linear(self, data): self.linear = data def get_linear(self): return self.linear def reset_linear(self): self.linear = True # designer will show these properties in this order: # BOOL linear_option = QtCore.pyqtProperty(bool, get_linear, set_linear, reset_linear) if __name__ == "__main__": import sys app = QtWidgets.QApplication(sys.argv) combo = JogIncrements() combo.show() sys.exit(app.exec_())