blob: f5c75274c7f2bab7a7b622d26b9734a444473771 (
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
|
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
/*!
\example areachart
\title AreaChart Example
\ingroup qtcharts_examples
\brief The example shows how to create a simple area chart.
\image examples_areachart.png
To create area charts, we need two QLineSeries instances. They are going to define the upper and lower boundary of the area.
\snippet areachart/main.cpp 1
We add data to both series and use the stream operator.
\snippet areachart/main.cpp 2
Now we create a QAreaSeries instance using two line series objects. We set the custom gradient fill and width of the outline.
\snippet areachart/main.cpp 3
Last we create the QChartView instance, set the title, set anti-aliasing, and add the area series. We also create the default axes and specify the ranges on them.
\snippet areachart/main.cpp 4
The chart is ready to be shown.
\snippet areachart/main.cpp 5
*/
|
