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#!/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.
###############################################################################
from PyQt5.QtWidgets import QComboBox, QTreeView, QFrame
from PyQt5.QtGui import QStandardItemModel, QStandardItem
from PyQt5.QtCore import Qt, QEvent, QModelIndex, pyqtSignal
import hal
from qtvcp.widgets.widget_baseclass import _HalWidgetBase
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 TreeComboBox(QComboBox):
selectionUpdated = pyqtSignal(str)
def __init__(self, parent=None):
super(TreeComboBox, self).__init__(parent)
tree_view = QTreeView(self)
tree_view.setHeaderHidden( False )
tree_view.setFrameShape(QFrame.NoFrame)
tree_view.setEditTriggers(tree_view.NoEditTriggers)
tree_view.setAlternatingRowColors(True)
tree_view.setSelectionBehavior(tree_view.SelectItems)
tree_view.setWordWrap(True)
tree_view.setAllColumnsShowFocus(True)
tree_view.setFixedWidth(200)
self.setView(tree_view)
#self.view().viewport().installEventFilter(self)
self.currentIndexChanged.connect(self.selected)
def showPopup(self):
self.setRootModelIndex(QModelIndex())
super(TreeComboBox, self).showPopup()
# set combox view the same as tree view ?
def hidePopup(self):
self.setRootModelIndex(self.view().currentIndex().parent())
self.setCurrentIndex(self.view().currentIndex().row())
super(TreeComboBox, self).hidePopup()
def eventFilter(self, object, event):
if event.type() == QEvent.MouseButtonPress and object is self.view().viewport():
index = self.view().indexAt(event.pos())
# print index.parent(),index.row(),index.column(),index.data(),index.data(Qt.UserRole + 1)
# print self.view().isExpanded(self.view().currentIndex())
# if self.itemAt(event.pos()) is None
self.__skip_next_hide = not self.view().visualRect(index).contains(event.pos())
return False
def addItems(self, parent, elements):
for text, value, children in elements:
item = QStandardItem(text)
# don't let title lines be selectable
if not value[1]:
item.setFlags(item.flags() & -(1<<1))
item.setData(value[0], role=Qt.ToolTipRole)
# store the HAL name and selectability in Qt user roles
item.setData(value[0], role=Qt.UserRole + 1)
item.setData(value[1], role=Qt.UserRole + 2)
parent.appendRow(item)
# next level
if children:
self.addItems(item, children)
# emit the (by default) signal name
def getSelectionData(self, index,userIndex=1):
choice = self.itemData(self.currentIndex(), Qt.UserRole + userIndex)
return choice
def selected(self,index):
if self.getSelectionData(index) is None:
print ('should reset selection or expand node')
return
self.selectionUpdated.emit(self.getSelectionData(index))
################################################################
class HALSelectionBox(TreeComboBox, _HalWidgetBase):
HAL_BIT = hal.HAL_BIT
HAL_FLOAT = hal.HAL_FLOAT
HAL_S32 = hal.HAL_S32
HAL_U32 = hal.HAL_U32
HAL_IN = hal.HAL_IN
HAL_OUT = hal.HAL_OUT
HAL_IO = hal.HAL_IO
HAL_RO = hal.HAL_RO
HAL_RW = hal.HAL_RW
PINS = 1
SIGS = SIGNALS = 2
PARAMS = PARAMETERS = 4
def __init__(self, parent=None):
super(HALSelectionBox, self).__init__(parent)
self.PINTYPE = [self.HAL_BIT,self.HAL_FLOAT,self.HAL_S32,self.HAL_U32]
self.PINDIRECTION = [self.HAL_IN, self.HAL_OUT]
self.SIGTYPE = [self.HAL_BIT,self.HAL_FLOAT,self.HAL_S32,self.HAL_U32]
self.SIGDRIVEN = [True, False]
self.PARAMTYPE = [self.HAL_RO, self.HAL_RW]
self.SHOWTYPES = [self.PINS]
def _hal_init(self):
model = QStandardItemModel()
model.setHorizontalHeaderLabels(['Connect to:'])
node_pin = []
node_pinin = []
node_pinout = []
node_pininout = []
node_sig = []
node_param = []
parent_node = []
if self.PINS in self.SHOWTYPES:
# append((label -> 'Name',
# user data -> [HAL name -> None, selectable -> False],
# next level -> next_node_list))
parent_node.append(('Pins', [None, False], node_pin))
node_pin.append(('IN', [None, False], node_pinin))
node_pin.append(('OUT', [None, False], node_pinout))
node_pin.append(('IO', [None, False], node_pininout))
for i in hal.get_info_pins():
if i['TYPE'] in self.PINTYPE:
if i['DIRECTION'] in self.PINDIRECTION:
if i['DIRECTION'] == self.HAL_IN:
node_pinin.append((i['NAME'], [i['NAME'], True], []))
elif i['DIRECTION'] == self.HAL_OUT:
node_pinout.append((i['NAME'], [i['NAME'], True], []))
else:
node_pininout.append((i['NAME'], [i['NAME'], True], []))
if self.SIGS in self.SHOWTYPES:
node_sigdriven = []
node_sigundriven = []
parent_node.append(('Signals', [None, None], node_sig))
node_sig.append(('Driven', [None, False], node_sigdriven))
node_sig.append(('Undriven', [None, False], node_sigundriven))
for i in hal.get_info_signals():
if i['TYPE'] in self.SIGTYPE:
if not bool(i['DRIVER']is None) and bool(False) in self.SIGDRIVEN:
node_sigdriven.append((i['NAME'], [i['NAME'], True], []))
elif bool(i['DRIVER']is None) and bool(True) in self.SIGDRIVEN:
node_sigundriven.append((i['NAME'], [i['NAME'], True], []))
if self.PARAMS in self.SHOWTYPES:
parent_node.append(('Parameters', [None, None], node_param))
for i in hal.get_info_params():
if i['TYPE'] in self.PARAMTYPE:
node_sig.append((i['NAME'], [i['NAME'], True], []))
self.addItems(model, parent_node)
self.setModel(model)
self.view().expandAll()
def setShowTypes(self, types):
''' Sets the pin type: HAL_BIT,HAL_FLOAT,HAL_S32,HAL_U32
that will be shown in the combbox.
widget defaults to all pin types shown
ie. combobox.setShowTypes([combobox.HAL_BIT])'''
self.SHOWTYPES = types
def setPinTypes(self, \
types = [HAL_BIT,HAL_FLOAT,HAL_S32,HAL_U32], \
direction = [HAL_IN, HAL_OUT]):
''' Sets the pin type: HAL_BIT,HAL_FLOAT,HAL_S32,HAL_U32
and direction: HAL_IN, HAL_OUT
that will be shown in combobox.
widget defaults to all pins, all directions.
ie. combobox.setPinTypes([combobox.HAL_BIT], direction = [HAL_IN])'''
self.PINTYPE = types
self.PINDIRECTION = direction
def setSignalTypes(self, \
types = [HAL_BIT,HAL_FLOAT,HAL_S32,HAL_U32], \
driven = [True, False]):
''' Sets the pin type: HAL_BIT,HAL_FLOAT,HAL_S32,HAL_U32
and what type of signals (driven by a pin, not or both).
True being driven and False being un-driven signals
combobox.setSignalTypes([combobox.HAL_BIT], direction = [True,False])'''
self.SIGTYPE = types
self.SIGDRIVEN = driven
##############################
# required class boiler code #
##############################
def __getitem__(self, item):
return getattr(self, item)
def __setitem__(self, item, value):
return setattr(self, item, value)
# for testing without editor:
def main():
import sys
from PyQt5.QtWidgets import QApplication
app = QApplication(sys.argv)
x = hal.component('_X_')
widget = HALSelectionBox()
widget._hal_init()
widget.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main()
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