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