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/***************************************************************************
** **
** QCustomPlot, an easy to use, modern plotting widget for Qt **
** Copyright (C) 2011-2018 Emanuel Eichhammer **
** **
** This program is free software: you can redistribute it and/or modify **
** it under the terms of the GNU General Public License as published by **
** the Free Software Foundation, either version 3 of the License, or **
** (at your option) any later version. **
** **
** This program is distributed in the hope that it will be useful, **
** but WITHOUT ANY WARRANTY; without even the implied warranty of **
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the **
** GNU General Public License for more details. **
** **
** You should have received a copy of the GNU General Public License **
** along with this program. If not, see http://www.gnu.org/licenses/. **
** **
****************************************************************************
** Author: Emanuel Eichhammer **
** Website/Contact: http://www.qcustomplot.com/ **
** Date: 25.06.18 **
** Version: 2.0.1 **
****************************************************************************/
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow),
mPlot(0),
mTag1(0),
mTag2(0)
{
ui->setupUi(this);
mPlot = new QCustomPlot(this);
setCentralWidget(mPlot);
// configure plot to have two right axes:
mPlot->yAxis->setTickLabels(false);
connect(mPlot->yAxis2, SIGNAL(rangeChanged(QCPRange)), mPlot->yAxis, SLOT(setRange(QCPRange))); // left axis only mirrors inner right axis
mPlot->yAxis2->setVisible(true);
mPlot->axisRect()->addAxis(QCPAxis::atRight);
mPlot->axisRect()->axis(QCPAxis::atRight, 0)->setPadding(30); // add some padding to have space for tags
mPlot->axisRect()->axis(QCPAxis::atRight, 1)->setPadding(30); // add some padding to have space for tags
// create graphs:
mGraph1 = mPlot->addGraph(mPlot->xAxis, mPlot->axisRect()->axis(QCPAxis::atRight, 0));
mGraph2 = mPlot->addGraph(mPlot->xAxis, mPlot->axisRect()->axis(QCPAxis::atRight, 1));
mGraph1->setPen(QPen(QColor(250, 120, 0)));
mGraph2->setPen(QPen(QColor(0, 180, 60)));
// create tags with newly introduced AxisTag class (see axistag.h/.cpp):
mTag1 = new AxisTag(mGraph1->valueAxis());
mTag1->setPen(mGraph1->pen());
mTag2 = new AxisTag(mGraph2->valueAxis());
mTag2->setPen(mGraph2->pen());
connect(&mDataTimer, SIGNAL(timeout()), this, SLOT(timerSlot()));
mDataTimer.start(40);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::timerSlot()
{
// calculate and add a new data point to each graph:
mGraph1->addData(mGraph1->dataCount(), qSin(mGraph1->dataCount()/50.0)+qSin(mGraph1->dataCount()/50.0/0.3843)*0.25);
mGraph2->addData(mGraph2->dataCount(), qCos(mGraph2->dataCount()/50.0)+qSin(mGraph2->dataCount()/50.0/0.4364)*0.15);
// make key axis range scroll with the data:
mPlot->xAxis->rescale();
mGraph1->rescaleValueAxis(false, true);
mGraph2->rescaleValueAxis(false, true);
mPlot->xAxis->setRange(mPlot->xAxis->range().upper, 100, Qt::AlignRight);
// update the vertical axis tag positions and texts to match the rightmost data point of the graphs:
double graph1Value = mGraph1->dataMainValue(mGraph1->dataCount()-1);
double graph2Value = mGraph2->dataMainValue(mGraph2->dataCount()-1);
mTag1->updatePosition(graph1Value);
mTag2->updatePosition(graph2Value);
mTag1->setText(QString::number(graph1Value, 'f', 2));
mTag2->setText(QString::number(graph2Value, 'f', 2));
mPlot->replot();
}
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