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
|
/***************************************************************************
* Copyright (C) 2011 by Peter Penz <[email protected]> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
***************************************************************************/
#include "kitemlistsizehintresolver_p.h"
#include <kitemviews/kitemlistview.h>
#include <KDebug>
KItemListSizeHintResolver::KItemListSizeHintResolver(const KItemListView* itemListView) :
m_itemListView(itemListView),
m_sizeHintCache()
{
}
KItemListSizeHintResolver::~KItemListSizeHintResolver()
{
}
QSizeF KItemListSizeHintResolver::sizeHint(int index) const
{
QSizeF size = m_sizeHintCache.at(index);
if (size.isEmpty()) {
size = m_itemListView->itemSizeHint(index);
m_sizeHintCache[index] = size;
}
return size;
}
void KItemListSizeHintResolver::itemsInserted(int index, int count)
{
const int currentCount = m_sizeHintCache.count();
m_sizeHintCache.reserve(currentCount + count);
while (count > 0) {
m_sizeHintCache.insert(index, QSizeF());
++index;
--count;
}
}
void KItemListSizeHintResolver::itemsRemoved(int index, int count)
{
const QList<QSizeF>::iterator begin = m_sizeHintCache.begin() + index;
const QList<QSizeF>::iterator end = begin + count;
m_sizeHintCache.erase(begin, end);
}
void KItemListSizeHintResolver::itemsMoved(int index, int count)
{
while (count) {
m_sizeHintCache[index] = QSizeF();
++index;
--count;
}
}
void KItemListSizeHintResolver::itemsChanged(int index, int count, const QSet<QByteArray>& roles)
{
Q_UNUSED(roles);
while (count) {
m_sizeHintCache[index] = QSizeF();
++index;
--count;
}
}
void KItemListSizeHintResolver::clearCache()
{
const int count = m_sizeHintCache.count();
for (int i = 0; i < count; ++i) {
m_sizeHintCache[i] = QSizeF();
}
}
|
