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
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QtCore/QtCore>
#include <QtGui/QStandardItemModel>
class TestModel : public QAbstractTableModel
{
Q_OBJECT
Q_PROPERTY(int rowCount READ rowCount WRITE setRowCount NOTIFY rowCountChanged)
Q_PROPERTY(int columnCount READ columnCount WRITE setColumnCount NOTIFY columnCountChanged)
public:
TestModel(QObject *parent = nullptr)
: QAbstractTableModel(parent)
{}
TestModel(int rows, int columns, QObject *parent = nullptr)
: QAbstractTableModel(parent)
, m_rows(rows)
, m_columns(columns)
{}
TestModel(int rows, int columns, bool dataCanBeFetched, QObject *parent = nullptr)
: QAbstractTableModel(parent)
, m_rows(rows)
, m_columns(columns)
, m_dataCanBeFetched(dataCanBeFetched)
{}
int rowCount(const QModelIndex & = QModelIndex()) const override { return m_rows; }
void setRowCount(int count) { beginResetModel(); m_rows = count; emit rowCountChanged(); endResetModel(); }
int columnCount(const QModelIndex & = QModelIndex()) const override { return m_columns; }
void setColumnCount(int count) { beginResetModel(); m_columns = count; emit columnCountChanged(); endResetModel(); }
QVariant data(const QModelIndex &index, int role) const override
{
if (!index.isValid() || role != Qt::DisplayRole)
return QVariant();
int serializedIndex = index.row() + (index.column() * m_columns);
if (modelData.contains(serializedIndex))
return modelData.value(serializedIndex);
return QStringLiteral("%1").arg(index.row());
}
Q_INVOKABLE QVariant dataFromSerializedIndex(int index) const
{
if (modelData.contains(index))
return modelData.value(index);
return QString();
}
QHash<int, QByteArray> roleNames() const override
{
return { {Qt::DisplayRole, "display"} };
}
Q_INVOKABLE void setModelData(const QPoint &cell, const QSize &span, const QString &string)
{
for (int c = 0; c < span.width(); ++c) {
for (int r = 0; r < span.height(); ++r) {
const int changedRow = cell.y() + r;
const int changedColumn = cell.x() + c;
const int serializedIndex = changedRow + (changedColumn * m_rows);
modelData.insert(serializedIndex, string);
}
}
const auto topLeftIndex = createIndex(cell.y(), cell.x(), nullptr);
const auto bottomRightIndex = createIndex(cell.y() + span.height() - 1, cell.x() + span.width() - 1, nullptr);
emit dataChanged(topLeftIndex, bottomRightIndex);
}
bool insertRows(int row, int count, const QModelIndex &parent = QModelIndex()) override
{
if (row < 0 || count <= 0)
return false;
beginInsertRows(parent, row, row + count - 1);
m_rows += count;
endInsertRows();
return true;
}
bool removeRows(int row, int count, const QModelIndex &parent = QModelIndex()) override
{
if (!checkIndex(createIndex(row, 0)) || !checkIndex(createIndex(row + count - 1, 0)))
return false;
beginRemoveRows(parent, row, row + count - 1);
m_rows -= count;
for (int c = 0; c < m_columns; ++c) {
for (int r = 0; r < count; ++r) {
const int serializedIndex = (row + r) + (c * m_rows);
modelData.remove(serializedIndex);
}
}
endRemoveRows();
return true;
}
bool insertColumns(int column, int count, const QModelIndex &parent = QModelIndex()) override
{
if (column < 0 || count <= 0)
return false;
beginInsertColumns(parent, column, column + count - 1);
m_columns += count;
endInsertColumns();
return true;
}
bool removeColumns(int column, int count, const QModelIndex &parent = QModelIndex()) override
{
if (!checkIndex(createIndex(0, column)) || !checkIndex(createIndex(0, column + count - 1)))
return false;
beginRemoveColumns(parent, column, column + count - 1);
m_columns -= count;
endRemoveColumns();
return true;
}
bool canFetchMore(const QModelIndex &parent) const override
{
Q_UNUSED(parent);
return m_dataCanBeFetched;
}
void swapRows(int row1, int row2)
{
layoutAboutToBeChanged();
Q_ASSERT(modelData.contains(row1));
Q_ASSERT(modelData.contains(row2));
const QString tmp = modelData[row1];
modelData[row1] = modelData[row2];
modelData[row2] = tmp;
layoutChanged();
}
void fetchMore(const QModelIndex &parent) override
{
Q_UNUSED(parent);
addRow(m_rows - 1);
}
void clear() {
beginResetModel();
m_rows = 0;
m_columns = 0;
modelData.clear();
endResetModel();
}
Q_INVOKABLE void addRow(int row)
{
insertRow(row, QModelIndex());
}
Qt::ItemFlags flags(const QModelIndex &index) const override
{
Q_UNUSED(index)
return m_flags;
}
void setFlags(Qt::ItemFlags flags)
{
m_flags = flags;
}
signals:
void rowCountChanged();
void columnCountChanged();
private:
int m_rows = 0;
int m_columns = 0;
bool m_dataCanBeFetched = false;
QHash<int, QString> modelData;
Qt::ItemFlags m_flags = Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsEditable;
};
#define TestModelAsVariant(...) QVariant::fromValue(QSharedPointer<TestModel>(new TestModel(__VA_ARGS__)))
|
