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#############################################################################
##
## Copyright (C) 2013 Riverbank Computing Limited
## Copyright (C) 2012 Hans-Peter Jansen <hpj@urpla.net>.
## Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
## All rights reserved.
## Contact: Nokia Corporation (qt-info@nokia.com)
##
## This file is part of the examples of PyQt.
##
## $QT_BEGIN_LICENSE:LGPL$
## GNU Lesser General Public License Usage
## This file may be used under the terms of the GNU Lesser General Public
## License version 2.1 as published by the Free Software Foundation and
## appearing in the file LICENSE.LGPL included in the packaging of this
## file. Please review the following information to ensure the GNU Lesser
## General Public License version 2.1 requirements will be met:
## http:#www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
##
## In addition, as a special exception, Nokia gives you certain additional
## rights. These rights are described in the Nokia Qt LGPL Exception
## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
##
## GNU General Public License Usage
## Alternatively, this file may be used under the terms of the GNU General
## Public License version 3.0 as published by the Free Software Foundation
## and appearing in the file LICENSE.GPL included in the packaging of this
## file. Please review the following information to ensure the GNU General
## Public License version 3.0 requirements will be met:
## http:#www.gnu.org/copyleft/gpl.html.
##
## Other Usage
## Alternatively, this file may be used in accordance with the terms and
## conditions contained in a signed written agreement between you and Nokia.
## $QT_END_LICENSE$
##
#############################################################################
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QColor
from PyQt5.QtWidgets import QTableWidgetItem
from util import decode_pos
class SpreadSheetItem(QTableWidgetItem):
def __init__(self, text=None):
if text is not None:
super(SpreadSheetItem, self).__init__(text)
else:
super(SpreadSheetItem, self).__init__()
self.isResolving = False
def clone(self):
item = super(SpreadSheetItem, self).clone()
item.isResolving = self.isResolving
return item
def formula(self):
return super(SpreadSheetItem, self).data(Qt.DisplayRole)
def data(self, role):
if role in (Qt.EditRole, Qt.StatusTipRole):
return self.formula()
if role == Qt.DisplayRole:
return self.display()
t = str(self.display())
try:
number = int(t)
except ValueError:
number = None
if role == Qt.TextColorRole:
if number is None:
return QColor(Qt.black)
elif number < 0:
return QColor(Qt.red)
return QColor(Qt.blue)
if role == Qt.TextAlignmentRole:
if t and (t[0].isdigit() or t[0] == '-'):
return Qt.AlignRight | Qt.AlignVCenter
return super(SpreadSheetItem, self).data(role)
def setData(self, role, value):
super(SpreadSheetItem, self).setData(role, value)
if self.tableWidget():
self.tableWidget().viewport().update()
def display(self):
# avoid circular dependencies
if self.isResolving:
return None
self.isResolving = True
result = self.computeFormula(self.formula(), self.tableWidget())
self.isResolving = False
return result
def computeFormula(self, formula, widget):
if formula is None:
return None
# check if the string is actually a formula or not
slist = formula.split(' ')
if not slist or not widget:
# it is a normal string
return formula
op = slist[0].lower()
firstRow = -1
firstCol = -1
secondRow = -1
secondCol = -1
if len(slist) > 1:
firstRow, firstCol = decode_pos(slist[1])
if len(slist) > 2:
secondRow, secondCol = decode_pos(slist[2])
start = widget.item(firstRow, firstCol)
end = widget.item(secondRow, secondCol)
firstVal = 0
try:
firstVal = start and int(start.text()) or 0
except ValueError:
pass
secondVal = 0
try:
secondVal = end and int(end.text()) or 0
except ValueError:
pass
result = None
if op == "sum":
sum_ = 0
for r in range(firstRow, secondRow + 1):
for c in range(firstCol, secondCol + 1):
tableItem = widget.item(r, c)
if tableItem and tableItem != self:
try:
sum_ += int(tableItem.text())
except ValueError:
pass
result = sum_
elif op == "+":
result = (firstVal + secondVal)
elif op == "-":
result = (firstVal - secondVal)
elif op == "*":
result = (firstVal * secondVal)
elif op == "/":
if secondVal == 0:
result = "nan"
else:
result = (firstVal / secondVal)
elif op == "=":
if start:
result = start.text()
else:
result = formula
return result
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