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qtvcp -touchEntry: add new widget for numeric touch entry
For quick numeric entry with a touch screen
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‎lib/python/qtvcp/widgets/touchEntry.py‎

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from PyQt5.QtCore import pyqtProperty, pyqtSignal, QSize, QObject, Qt
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from PyQt5.QtGui import QDoubleValidator, QIntValidator
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from PyQt5.QtWidgets import QWidget, QPushButton,QLineEdit, QHBoxLayout
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import decimal
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from decimal import Decimal
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class LineEdit(QLineEdit):
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clicked = pyqtSignal(bool)
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def __init__(self, parent=None):
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super().__init__(parent)
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#self.clicked.connect(lambda :self.entryClicked())
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def mousePressEvent(self,event):
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self.clicked.emit(True)
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class TouchSpinBox(QWidget):
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def __init__(self, parent=None):
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super().__init__(parent)
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self._value = 0
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self._multiplierIndex = 0
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self.setMinimumSize(QSize(200, 25))
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self.setMaximumSize(QSize(300, 50))
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lay = QHBoxLayout()
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lay.setContentsMargins(0,0,0,0)
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lay.setSpacing(0)
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self.setLayout(lay)
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self.entry = LineEdit()
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self.entry.setMaximumHeight(100)
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self.entry.setMinimumWidth(100)
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self.entry.clicked.connect(lambda :self.callDialog(self))
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lay.addWidget(self.entry)
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up = QPushButton('Up')
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up.setMaximumHeight(100)
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up.setMaximumWidth(40)
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up.pressed.connect(lambda :self.updateValue(True))
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lay.addWidget(up)
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self.select = QPushButton(str('<-'))
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self.select.setMaximumHeight(100)
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self.select.setMaximumWidth(40)
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self.select.pressed.connect(lambda :self.moveLeft())
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lay.addWidget(self.select)
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self.selectR = QPushButton(str('->'))
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self.selectR.setMaximumHeight(100)
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self.selectR.setMaximumWidth(40)
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self.selectR.pressed.connect(lambda :self.moveRight())
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lay.addWidget(self.selectR)
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self.down = QPushButton('Dwn')
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self.down.setMaximumHeight(100)
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self.down.setMaximumWidth(40)
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self.down.pressed.connect(lambda :self.updateValue(False))
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lay.addWidget(self.down)
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self.init_settings()
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def init_settings(self):
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self.entry.setText(str('00'))
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self.validInt = QIntValidator(-99999, 99999)
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self.entry.setValidator(self.validInt)
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def updateValue(self, state):
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mult = pow(10,self._multiplierIndex)
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print('update mult:',mult)
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decimal.getcontext().prec = 8
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x = Decimal(self._value) + Decimal( mult)
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print('Dec:',x)
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if state:
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self.setValue(Decimal(self._value) + Decimal( mult))
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else:
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self.setValue(Decimal(self._value) - Decimal( mult))
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def moveLeft(self):
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mult = self._multiplierIndex + 1
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t = len(self.entry.text())
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print('mult',mult, 't',t)
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if t < 0:t=0
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if mult >= t:
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mult = 0
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pwr = pow(10,mult)
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print('pow',pwr)
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self._multiplierIndex = mult
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#self.select.setText(str(pow(10,mult)))
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print('left',t-self._multiplierIndex-1,mult)
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self.entry.setSelection (t-self._multiplierIndex-1,1)
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def moveRight(self):
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mult = self._multiplierIndex - 1
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t = len(self.entry.text())
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print('mult',mult, 't',t)
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if t < 0:t=0
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if mult < 0:
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mult = t-1
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pwr = pow(10,mult)
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print('pow',pwr)
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self._multiplierIndex = mult
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#self.select.setText(str(pow(10,mult)))
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print('right',t-self._multiplierIndex-1,mult)
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self.entry.setSelection (t-self._multiplierIndex-1,1)
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def text(self):
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return self.entry.text()
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def value(self):
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return float(self.entry.text())
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def setValue(self, value):
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self._value = value
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self.entry.setText(str(value))
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# class patch or should we call a dialog from here too?
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def callDialog(self,widget):
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pass
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class TouchDoubleSpinBox(TouchSpinBox):
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def __init__(self, parent=None):
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super(TouchDoubleSpinBox, self).__init__(parent)
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def init_settings(self):
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self._value = 10.001
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self.validDouble = QDoubleValidator(-999.999, 999.999, 3)
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self.entry.setText(str('10.001'))
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self.entry.setValidator(self.validDouble)
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self.entry.returnPressed.connect(lambda :self.entryUpdate())
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def updateValue(self, state):
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def convert(x):
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return ['0','1','2','3','4','5','6','7','8','9','-',' ','end'][x]
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def indexof(x):
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return ['0','1','2','3','4','5','6','7','8','9','-',' ','end'].index(x)
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if self.entry.text() == '':
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self.entry.setText('0')
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pos = self.getPosition(self._multiplierIndex)
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x = self.entry.text()[pos]
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print('update txt:',x,'pos',pos)
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if state:
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next = convert(indexof(x)+1)
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if next in( '-',' ','end'):
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if pos == 0:
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if next != 'end':
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pass
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else:
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next = 0
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else:
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next = 0
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else:
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next = convert(indexof(x)-1)
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if next in( '-',' ','end'):
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if pos == 0:
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if next != 'end':
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pass
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else:
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next = 0
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else:
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next = 0
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self.entry.setText( self.replace_at_index(self.entry.text(),pos,str(next)))
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self.entry.setSelection (pos,1)
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def replace_at_index(self,text,index=0,replacement=''):
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return '%s%s%s'%(text[:index],replacement,text[index+1:])
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def getPosition(self, index):
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t = len(self.entry.text())-1
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print('T:',t,'Index:',index)
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if t < 0:t=0
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if index > t:
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self.entry.setText('0'+ self.entry.text())
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t = len(self.entry.text())-1
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#index = 0
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if self.entry.text()[t-index] in ('.',','):
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index+=1
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pos = t-index
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self._multiplierIndex = index
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return pos
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def moveLeft(self):
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index = self._multiplierIndex +1
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t = len(self.entry.text())-1
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print('T:',t,'Index:',index)
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if t < 0:t=0
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if index == -1:
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if '.' in self.entry.text():
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self.entry.setText(self.entry.text()+'0')
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t = len(self.entry.text())-1
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index = 0
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else:
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self.entry.setText(self.entry.text()+'.0')
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t = len(self.entry.text())-1
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index = 0
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if self.entry.text()[t-index] in ('.',','):
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index-=1
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pos = t-index
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self._multiplierIndex = index
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try:
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print('text;',self.entry.text()[pos])
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except:
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pass
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#self.select.setText(str(pos))
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self.entry.setSelection (pos,1)
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def moveRight(self):
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index = self._multiplierIndex -1
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t = len(self.entry.text())-1
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print('T:',t,'Index:',index)
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if t < 0:t=0
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if index == -1:
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if '.' in self.entry.text():
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self.entry.setText(self.entry.text()+'0')
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t = len(self.entry.text())-1
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index = 0
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else:
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self.entry.setText(self.entry.text()+'.0')
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t = len(self.entry.text())-1
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index = 0
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if self.entry.text()[t-index] in ('.',','):
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index-=1
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pos = t-index
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self._multiplierIndex = index
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try:
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print('text;',self.entry.text()[pos])
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except:
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pass
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#self.select.setText(str(pos))
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self.entry.setSelection (pos,1)
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def moveLeft(self):
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pos = self.getPosition(self._multiplierIndex +1)
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try:
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print('text;',self.entry.text()[pos])
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except:
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pass
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#self.select.setText(str(pos))
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self.entry.setSelection (pos,1)
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def setValue(self, value):
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self.entry.setText('{:4.3f}'.format(value))
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def entryUpdate(self):
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print('Update:',self.entry.text())
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if self.entry.text() == '':
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self.setValue(0)
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# for direct testing
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if __name__ == "__main__":
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from PyQt5.QtWidgets import *
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from PyQt5.QtCore import *
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from PyQt5.QtGui import *
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import sys
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app = QApplication(sys.argv)
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w = TouchSpinBox()
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w.show()
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w = TouchDoubleSpinBox()
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w.show()
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sys.exit( app.exec_() )

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