|
1 /**************************************************************************** |
|
2 ** |
|
3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
4 ** All rights reserved. |
|
5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
|
6 ** |
|
7 ** This file is part of the examples of the Qt Toolkit. |
|
8 ** |
|
9 ** $QT_BEGIN_LICENSE:LGPL$ |
|
10 ** No Commercial Usage |
|
11 ** This file contains pre-release code and may not be distributed. |
|
12 ** You may use this file in accordance with the terms and conditions |
|
13 ** contained in the Technology Preview License Agreement accompanying |
|
14 ** this package. |
|
15 ** |
|
16 ** GNU Lesser General Public License Usage |
|
17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
|
18 ** General Public License version 2.1 as published by the Free Software |
|
19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
|
20 ** packaging of this file. Please review the following information to |
|
21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
|
22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
|
23 ** |
|
24 ** In addition, as a special exception, Nokia gives you certain additional |
|
25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
|
26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
|
27 ** |
|
28 ** If you have questions regarding the use of this file, please contact |
|
29 ** Nokia at qt-info@nokia.com. |
|
30 ** |
|
31 ** |
|
32 ** |
|
33 ** |
|
34 ** |
|
35 ** |
|
36 ** |
|
37 ** |
|
38 ** $QT_END_LICENSE$ |
|
39 ** |
|
40 ****************************************************************************/ |
|
41 |
|
42 #include <QtGui> |
|
43 |
|
44 #include "pixeldelegate.h" |
|
45 |
|
46 //! [0] |
|
47 PixelDelegate::PixelDelegate(QObject *parent) |
|
48 : QAbstractItemDelegate(parent) |
|
49 { |
|
50 pixelSize = 12; |
|
51 } |
|
52 //! [0] |
|
53 |
|
54 //! [1] |
|
55 void PixelDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, |
|
56 const QModelIndex &index) const |
|
57 { |
|
58 //! [2] |
|
59 if (option.state & QStyle::State_Selected) |
|
60 painter->fillRect(option.rect, option.palette.highlight()); |
|
61 //! [1] |
|
62 |
|
63 //! [3] |
|
64 int size = qMin(option.rect.width(), option.rect.height()); |
|
65 //! [3] //! [4] |
|
66 int brightness = index.model()->data(index, Qt::DisplayRole).toInt(); |
|
67 double radius = (size/2.0) - (brightness/255.0 * size/2.0); |
|
68 if (radius == 0.0) |
|
69 return; |
|
70 //! [4] |
|
71 |
|
72 //! [5] |
|
73 painter->save(); |
|
74 //! [5] //! [6] |
|
75 painter->setRenderHint(QPainter::Antialiasing, true); |
|
76 //! [6] //! [7] |
|
77 painter->setPen(Qt::NoPen); |
|
78 //! [7] //! [8] |
|
79 if (option.state & QStyle::State_Selected) |
|
80 //! [8] //! [9] |
|
81 painter->setBrush(option.palette.highlightedText()); |
|
82 else |
|
83 //! [2] |
|
84 painter->setBrush(QBrush(Qt::black)); |
|
85 //! [9] |
|
86 |
|
87 //! [10] |
|
88 painter->drawEllipse(QRectF(option.rect.x() + option.rect.width()/2 - radius, |
|
89 option.rect.y() + option.rect.height()/2 - radius, |
|
90 2*radius, 2*radius)); |
|
91 painter->restore(); |
|
92 } |
|
93 //! [10] |
|
94 |
|
95 //! [11] |
|
96 QSize PixelDelegate::sizeHint(const QStyleOptionViewItem & /* option */, |
|
97 const QModelIndex & /* index */) const |
|
98 { |
|
99 return QSize(pixelSize, pixelSize); |
|
100 } |
|
101 //! [11] |
|
102 |
|
103 //! [12] |
|
104 void PixelDelegate::setPixelSize(int size) |
|
105 { |
|
106 pixelSize = size; |
|
107 } |
|
108 //! [12] |