1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/****************************************************************************
**
** 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 demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "spreadsheetitem.h"
SpreadSheetItem::SpreadSheetItem()
: QTableWidgetItem(), isResolving(false)
{
}
SpreadSheetItem::SpreadSheetItem(const QString &text)
: QTableWidgetItem(text), isResolving(false)
{
}
QTableWidgetItem *SpreadSheetItem::clone() const
{
SpreadSheetItem *item = new SpreadSheetItem();
*item = *this;
return item;
}
QVariant SpreadSheetItem::data(int role) const
{
if (role == Qt::EditRole || role == Qt::StatusTipRole)
return formula();
if (role == Qt::DisplayRole)
return display();
QString t = display().toString();
bool isNumber = false;
int number = t.toInt(&isNumber);
if (role == Qt::TextColorRole) {
if (!isNumber)
return QVariant::fromValue(QColor(Qt::black));
else if (number < 0)
return QVariant::fromValue(QColor(Qt::red));
return QVariant::fromValue(QColor(Qt::blue));
}
if (role == Qt::TextAlignmentRole)
if (!t.isEmpty() && (t.at(0).isNumber() || t.at(0) == '-'))
return (int)(Qt::AlignRight | Qt::AlignVCenter);
return QTableWidgetItem::data(role);
}
void SpreadSheetItem::setData(int role, const QVariant &value)
{
QTableWidgetItem::setData(role, value);
if (tableWidget())
tableWidget()->viewport()->update();
}
QVariant SpreadSheetItem::display() const
{
// avoid circular dependencies
if (isResolving)
return QVariant();
isResolving = true;
QVariant result = computeFormula(formula(), tableWidget(), this);
isResolving = false;
return result;
}
QVariant SpreadSheetItem::computeFormula(const QString &formula,
const QTableWidget *widget,
const QTableWidgetItem *self)
{
// check if the s tring is actually a formula or not
QStringList list = formula.split(' ');
if (list.isEmpty() || !widget)
return formula; // it is a normal string
QString op = list.value(0).toLower();
int firstRow = -1;
int firstCol = -1;
int secondRow = -1;
int secondCol = -1;
if (list.count() > 1)
decode_pos(list.value(1), &firstRow, &firstCol);
if (list.count() > 2)
decode_pos(list.value(2), &secondRow, &secondCol);
const QTableWidgetItem *start = widget->item(firstRow, firstCol);
const QTableWidgetItem *end = widget->item(secondRow, secondCol);
int firstVal = start ? start->text().toInt() : 0;
int secondVal = end ? end->text().toInt() : 0;
QVariant result;
if (op == "sum") {
int sum = 0;
for (int r = firstRow; r <= secondRow; ++r) {
for (int c = firstCol; c <= secondCol; ++c) {
const QTableWidgetItem *tableItem = widget->item(r, c);
if (tableItem && tableItem != self)
sum += tableItem->text().toInt();
}
}
result = sum;
} else if (op == "+") {
result = (firstVal + secondVal);
} else if (op == "-") {
result = (firstVal - secondVal);
} else if (op == "*") {
result = (firstVal * secondVal);
} else if (op == "/") {
if (secondVal == 0)
result = QString("nan");
else
result = (firstVal / secondVal);
} else if (op == "=") {
if (start)
result = start->text();
} else {
result = formula;
}
return result;
}
|
