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# -*- coding: utf-8 -*-
#
# AWL simulator - GUI text value line edit widget
#
# Copyright 2014-2015 Michael Buesch <m@bues.ch>
#
# 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.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
from __future__ import division, absolute_import, print_function, unicode_literals
from awlsim.common.compat import *
from awlsim.gui.util import *
class ValidatorCallback(QValidator):
def __init__(self, callback, parent=None):
QValidator.__init__(self, parent)
self.callback = callback
def validate(self, inputString, pos):
state = self.callback(inputString, pos)
if isPySide:
return state
elif isPyQt:
return (state, inputString, pos)
assert(0)
class ValueLineEdit(QLineEdit):
valueChanged = Signal(str)
def __init__(self, validatorCallback=None, parent=None):
QLineEdit.__init__(self, parent)
self.setAlignment(Qt.AlignRight)
if validatorCallback:
self.__validatorCallback = validatorCallback
self.setValidator(ValidatorCallback(self.__validator, self))
self.__editing = False
self.__activeText = ""
self.setReadOnly(True)
self.__setColors(True)
self.returnPressed.connect(self.__handleReturnPressed)
def __setColors(self, validInput):
pal = self.palette()
if self.isEnabledTo(None):
if self.__editing:
pal.setColor(QPalette.Base, QColor("#FFFFC0"))
else:
pal.setColor(QPalette.Base, Qt.white)
else:
pal.setColor(QPalette.Base, pal.color(QPalette.Window))
if validInput:
pal.setColor(QPalette.Text, Qt.black)
else:
pal.setColor(QPalette.Text, Qt.red)
self.setPalette(pal)
def changeEvent(self, ev):
QLineEdit.changeEvent(self, ev)
if not self.isEnabledTo(None):
self.__setColors(True)
def __validator(self, inputString, pos):
res = self.__validatorCallback(inputString, pos)
self.__setColors(res == QValidator.Acceptable)
return res
def __handleReturnPressed(self):
if self.__editing:
self.__editing = False
self.__setColors(True)
self.setReadOnly(True)
self.__activeText = QLineEdit.text(self)
self.valueChanged.emit(self.__activeText)
def __cancelEdit(self):
if self.__editing:
self.__editing = False
self.__setColors(True)
self.setReadOnly(True)
QLineEdit.setText(self, self.__activeText)
def focusOutEvent(self, event):
QLineEdit.focusOutEvent(self, event)
self.__cancelEdit()
def mousePressEvent(self, ev):
QLineEdit.mousePressEvent(self, ev)
if self.__editing:
return
if ev.button() & (Qt.LeftButton |
Qt.MidButton |
Qt.RightButton):
self.__editing = True
self.setReadOnly(False)
self.__setColors(True)
def keyPressEvent(self, ev):
QLineEdit.keyPressEvent(self, ev)
if ev.key() == Qt.Key_Escape:
self.__cancelEdit()
def text(self):
return self.__activeText
def setText(self, newText):
self.__activeText = newText
if not self.__editing:
QLineEdit.setText(self, newText)
def clear(self):
self.setText("")
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