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
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QGraphicsGridLayout>
#include <QDebug>
#include "recycledlistitem.h"
#include "listmodel.h"
static const int MinItemHeight = 70;
static const int MinItemWidth = 276;
RecycledListItem::RecycledListItem(QGraphicsWidget *parent)
: AbstractViewItem(parent),
m_item(new ListItem(this)),
m_item2(0),
m_model(0),
m_layout(new QGraphicsGridLayout())
{
m_item->setMinimumWidth(MinItemWidth);
setContentsMargins(0,0,0,0);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
m_layout->addItem(m_item, 0, 0);
setLayout(m_layout);
m_layout->setContentsMargins(0,0,0,0);
m_layout->setSpacing(0);
m_layout->setHorizontalSpacing(0.0);
m_layout->setVerticalSpacing(0.0);
}
RecycledListItem::~RecycledListItem()
{
}
void RecycledListItem::setModel(QAbstractItemModel *model)
{
m_model = model;
}
/*virtual*/
AbstractViewItem *RecycledListItem::newItemInstance()
{
RecycledListItem* item = new RecycledListItem();
return item;
}
QSizeF RecycledListItem::effectiveSizeHint(Qt::SizeHint which, const QSizeF &constraint) const
{
QSizeF s = m_item->effectiveSizeHint(which,constraint);
if (m_item2)
s.setWidth(s.width()*2);
if (s.height()<MinItemHeight)
s.setHeight(MinItemHeight);
return s;
}
QVariant RecycledListItem::data(int role) const
{
if (m_item && role == Qt::DisplayRole)
return m_item->data();
return QVariant();
}
void RecycledListItem::setData(const QVariant &value, int role)
{
if (m_item && role == Qt::DisplayRole) {
m_item->setData(value);
if (m_item2) {
m_item2->setData(value);
}
}
}
/*virtual*/
void RecycledListItem::resizeEvent(QGraphicsSceneResizeEvent *event)
{
AbstractViewItem::resizeEvent(event);
}
void RecycledListItem::updateItemContents()
{
AbstractViewItem::updateItemContents();
if (m_model && m_index.isValid())
setData(m_model->data(m_index,Qt::DisplayRole), Qt::DisplayRole);
}
void RecycledListItem::setTwoColumns(const bool enabled)
{
if (m_item2 && enabled)
return;
if (enabled) {
m_item2 = new ListItem();
m_item2->setMinimumWidth(MinItemWidth);
m_layout->addItem(m_item2, 0, 1);
updateItemContents();
}
else {
if (m_layout->count() > 1) {
m_layout->removeAt(1);
}
delete m_item2;
m_item2 = 0;
}
if (!m_layout->isActivated())
m_layout->activate();
}
|