summaryrefslogtreecommitdiffstats
path: root/doc/src/snippets/qlineargradient/paintwidget.cpp
blob: 61d8916eaabdd40e61f1b92bac14c8e1f5e9df12 (plain)
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
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtGui>
#include "paintwidget.h"

PaintWidget::PaintWidget(QWidget *parent)
    : QWidget(parent)
{
}

void PaintWidget::paintEvent(QPaintEvent *event)
{
    QLinearGradient gradient1(rect().topLeft(), rect().bottomRight());
    gradient1.setColorAt(0, QColor("#ffffcc"));
    gradient1.setColorAt(1, QColor("#ccccff"));

    QRectF ellipseRect(width()*0.25, height()*0.25, width()*0.5, height()*0.5);
    QLinearGradient gradient2(ellipseRect.topLeft(), ellipseRect.bottomRight());
    gradient2.setColorAt(0, QColor("#ccccff"));
    gradient2.setColorAt(1, QColor("#ffffcc"));

    QPainter painter;
    painter.begin(this);
    painter.setRenderHint(QPainter::Antialiasing);
    painter.fillRect(rect(), QBrush(gradient1));
    painter.setBrush(QBrush(gradient2));
    painter.drawEllipse(ellipseRect);
    painter.end();
}