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 | /* ============================================================
*
* This file is a part of digiKam project
* https://www.digikam.org
*
* Date : 2010-03-22
* Description : A model for the view to display a list of items.
*
* SPDX-FileCopyrightText: 2010-2025 by Gilles Caulier <caulier dot gilles at gmail dot com>
* SPDX-FileCopyrightText: 2010 by Michael G. Hansen <mike at mghansen dot de>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*
* ============================================================ */
#include "gpsitemdelegate.h"
// Qt includes
#include <QPainter>
#include <QIcon>
// Local includes
#include "digikam_debug.h"
namespace Digikam
{
class Q_DECL_HIDDEN GPSItemDelegate::Private
{
public:
Private() = default;
GPSItemList* imageList = nullptr;
int thumbnailSize = 60;
};
GPSItemDelegate::GPSItemDelegate(GPSItemList* const imageList, QObject* const parent)
: QItemDelegate(parent),
d (new Private)
{
d->imageList = imageList;
}
GPSItemDelegate::~GPSItemDelegate()
{
delete d;
}
void GPSItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& sortMappedindex) const
{
if (sortMappedindex.column() != GPSItemContainer::ColumnThumbnail)
{
QItemDelegate::paint(painter, option, sortMappedindex);
return;
}
const QModelIndex& sourceModelIndex = d->imageList->getSortProxyModel()->mapToSource(sortMappedindex);
if (option.state & QStyle::State_Selected)
{
painter->fillRect(option.rect, option.palette.highlight());
}
// TODO: clipping, selected state, disabled state, etc.
QPixmap itemPixmap = d->imageList->getModel()->getPixmapForIndex(sourceModelIndex, d->thumbnailSize);
if (itemPixmap.isNull())
{
// TODO: paint some default logo
// TODO: cache this logo
itemPixmap = QIcon::fromTheme(QLatin1String("view-preview"))
.pixmap(d->thumbnailSize, QIcon::Disabled);
}
const QSize availableSize = option.rect.size();
const QSize pixmapSize = itemPixmap.size().boundedTo(availableSize);
QPoint startPoint((availableSize.width() - pixmapSize.width()) / 2,
(availableSize.height() - pixmapSize.height()) / 2);
startPoint += option.rect.topLeft();
painter->drawPixmap(QRect(startPoint, pixmapSize), itemPixmap, QRect(QPoint(0, 0), pixmapSize));
}
QSize GPSItemDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& sortMappedindex) const
{
if (sortMappedindex.column() == GPSItemContainer::ColumnThumbnail)
{
return QSize(d->thumbnailSize, d->thumbnailSize);
}
const QSize realSizeHint = QItemDelegate::sizeHint(option, sortMappedindex);
return QSize(realSizeHint.width(), d->thumbnailSize);
}
void GPSItemDelegate::setThumbnailSize(const int size)
{
d->thumbnailSize = size;
GPSItemModel* const imageModel = d->imageList->getModel();<--- Variable 'imageModel' can be declared as pointer to const
if (!imageModel)
{
return;
}
if (imageModel->rowCount() > 0)
{
// TODO: is it enough to Q_EMIT this signal for only 1 item?
// seems to work in Qt4.5 with QTreeView::setUniformRowHeights(true)
Q_EMIT sizeHintChanged(imageModel->index(0, 0));
}
}
int GPSItemDelegate::getThumbnailSize() const
{
return d->thumbnailSize;
}
} // namespace Digikam
#include "moc_gpsitemdelegate.cpp"
|