##// END OF EJS Templates
Add/modify license headers
Add/modify license headers

File last commit:

r830:b345b831b8c1
r830:b345b831b8c1
Show More
splinewidget.cpp
136 lines | 3.9 KiB | text/x-c | CppLexer
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#include "splinewidget.h"
#include "qchartview.h"
#include "qlineseries.h"
#include <QGridLayout>
#include <QPushButton>
#include "qchartaxis.h"
#include <qmath.h>
#include <QTime>
QTCOMMERCIALCHART_USE_NAMESPACE
SplineWidget::SplineWidget(QWidget *parent)
: QWidget(parent)
{
// qsrand(time(NULL));
qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));
//! [1]
//create QSplineSeries
series = new QSplineSeries(this);
//! [1]
//! [2]
// customize the series presentation settings
QPen seriesPen(Qt::blue);
seriesPen.setWidth(3);
// series->setPen(seriesPen);
//! [2]
//! [add points to series]
//add data points to the series
series->append(QPointF(150, 100));
series->append(QPointF(200, 130));
series->append(QPointF(250, 120));
series->append(QPointF(300, 140));
series->append(QPointF(350, 160));
//! [add points to series]
QSplineSeries* series2 = new QSplineSeries;
series2->append(QPointF(400, 120));
series2->append(QPointF(450, 150));
series2->append(QPointF(500, 145));
series2->append(QPointF(550, 170));
// series->append(QPointF(600, 190));
// series->append(QPointF(650, 210));
// series->append(QPointF(700, 190));
// series->append(QPointF(750, 180));
// series->append(QPointF(800, 170));
QSplineSeries* series3 = new QSplineSeries;
series3->append(QPointF(600, 190));
series3->append(QPointF(650, 210));
series3->append(QPointF(700, 190));
series3->append(QPointF(750, 180));
series3->append(QPointF(800, 170));
//! [3]
// create chart view
QChartView* chart = new QChartView;
chart->addSeries(series);
chart->addSeries(series2);
chart->addSeries(series3);
chart->setChartTitle("Spline chart example");
chart->axisX()->setMax(1500);
chart->axisY()->setMax(500);
chart->setMinimumSize(800,600);
//! [3]
//! [4]
//add new data point button
QPushButton* addButton = new QPushButton("Add new point");
connect(addButton, SIGNAL(clicked()), this, SLOT(addNewPoint()));
// remove the last data point in the series
QPushButton* removeButton = new QPushButton("Remove point");
connect(removeButton, SIGNAL(clicked()), this, SLOT(removePoint()));
//! [4]
//! [5]
//butttons layout
QVBoxLayout* buttonsLayout = new QVBoxLayout;
buttonsLayout->addWidget(addButton);
buttonsLayout->addWidget(removeButton);
buttonsLayout->addStretch();
QGridLayout* mainLayout = new QGridLayout;
mainLayout->addWidget(chart, 1, 0);
mainLayout->addLayout(buttonsLayout, 1, 1);
setLayout(mainLayout);
//! [5]
}
//! [add point]
void SplineWidget::addNewPoint()
{
if (series->count() > 0)
series->append(QPointF(series->x(series->count() - 1) + 40 + qrand()%40, qAbs(series->y(series->count() - 1) - 50 + qrand()%100)));
else
series->append(QPointF(50, 50 + qrand()%50));
}
//! [add point]
//! [remove point]
void SplineWidget::removePoint()
{
if (series->count() > 0)
series->remove(QPointF(series->x(series->count() - 1), series->y(series->count() - 1)));
}
//! [remove point]
SplineWidget::~SplineWidget()
{
}