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
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
#include "documentoutlinemodel.hpp"
#include <cassert>
#include <QModelIndex>
DocumentOutlineModel::DocumentOutlineModel() :
QAbstractItemModel(),
root()
{
}
void DocumentOutlineModel::clear()
{
beginBuild();
endBuild();
}
void DocumentOutlineModel::beginBuild()
{
beginResetModel();
root = Node {
nullptr,
"<ROOT>", "",
0, 0,
QList<Node> { },
};
}
void DocumentOutlineModel::appendH1(const QString &title, QString const & anchor)
{
root.children.append(Node {
&root,
title, anchor,
1, 0,
QList<Node> { },
});
}
void DocumentOutlineModel::appendH2(const QString &title, QString const & anchor)
{
auto & parent = ensureLevel1();
parent.children.append(Node {
&parent,
title, anchor,
2, parent.children.size() - 1,
QList<Node> { },
});
}
void DocumentOutlineModel::appendH3(const QString &title, QString const & anchor)
{
auto & parent = ensureLevel2();
parent.children.append(Node {
&parent,
title, anchor,
3, parent.children.size() - 1,
QList<Node> { },
});
}
void DocumentOutlineModel::endBuild()
{
int root_index = 0;
for(auto & h1 : this->root.children)
{
assert(h1.depth == 1);
assert(h1.parent == &this->root);
h1.index = root_index;
root_index += 1;
int group_index = 0;
for(auto & h2 : h1.children)
{
assert(h2.depth == 2);
assert(h2.parent == &h1);
h2.index = group_index;
group_index += 1;
int bottom_index = 0;
for(auto & h3 : h2.children)
{
assert(h3.depth == 3);
assert(h3.parent == &h2);
h3.index = bottom_index;
bottom_index += 1;
}
}
}
endResetModel();
}
QString DocumentOutlineModel::getTitle(const QModelIndex &index) const
{
if(not index.isValid())
return "";
Node const *childItem = static_cast<Node const *>(index.internalPointer());
return childItem->title;
}
QString DocumentOutlineModel::getAnchor(const QModelIndex &index) const
{
if(not index.isValid())
return "";
Node const *childItem = static_cast<Node const *>(index.internalPointer());
return childItem->anchor;
}
QModelIndex DocumentOutlineModel::index(int row, int column, const QModelIndex &parent) const
{
if (not hasIndex(row, column, parent))
return QModelIndex();
Node const * parentItem;
if (!parent.isValid())
parentItem = &this->root;
else
parentItem = static_cast<Node*>(parent.internalPointer());
Node const * childItem = &parentItem->children[row];
if (childItem)
return createIndex(row, column, reinterpret_cast<quintptr>(childItem));
return QModelIndex();
}
QModelIndex DocumentOutlineModel::parent(const QModelIndex &child) const
{
if (!child.isValid())
return QModelIndex();
Node const *childItem = static_cast<Node const *>(child.internalPointer());
Node const * parent = childItem->parent;
if (parent == &root)
return QModelIndex();
return createIndex(
parent->index,
0,
reinterpret_cast<quintptr>(parent));
}
int DocumentOutlineModel::rowCount(const QModelIndex &parent) const
{
Node const * parentItem;
if (parent.column() > 0)
return 0;
if (!parent.isValid())
parentItem = &root;
else
parentItem = static_cast<Node const *>(parent.internalPointer());
return parentItem->children.size();
}
int DocumentOutlineModel::columnCount(const QModelIndex &parent) const
{
Q_UNUSED(parent)
return 1;
}
QVariant DocumentOutlineModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
if (index.column() != 0)
return QVariant();
if (role != Qt::DisplayRole)
return QVariant();
Node const *item = static_cast<Node const*>(index.internalPointer());
return item->title;
}
DocumentOutlineModel::Node & DocumentOutlineModel::ensureLevel1()
{
if(root.children.size() == 0) {
root.children.append(Node {
&root,
"<missing layer>", "",
1, 0,
QList<Node> { },
});
}
return root.children.last();
}
DocumentOutlineModel::Node & DocumentOutlineModel::ensureLevel2()
{
auto & parent = ensureLevel1();
if(parent.children.size() == 0) {
parent.children.append(Node {
&parent,
"<missing layer>", "",
2, 0,
QList<Node> { },
});
}
return parent.children.last();
}
|
