#include "frmsimple.h"
#include "ui_frmsimple.h"
#include "qdebug.h"

frmSimple::frmSimple(QWidget *parent) : QWidget(parent), ui(new Ui::frmSimple)
{
    ui->setupUi(this);
    this->initForm();
}

frmSimple::~frmSimple()
{
    delete ui;
}

void frmSimple::initForm()
{
    // add two new graphs and set their look:
    ui->customPlot->addGraph();
    ui->customPlot->graph(0)->setPen(QPen(Qt::blue)); // line color blue for first graph
    ui->customPlot->graph(0)->setBrush(QBrush(QColor(0, 0, 255, 20))); // first graph will be filled with translucent blue
    ui->customPlot->addGraph();
    ui->customPlot->graph(1)->setPen(QPen(Qt::red)); // line color red for second graph

    // generate some points of data (y0 for first, y1 for second graph):
    QVector<double> x(251), y0(251), y1(251);
    for (int i = 0; i < 251; ++i) {
        x[i] = i;
        y0[i] = qExp(-i / 150.0) * qCos(i / 10.0); // exponentially decaying cosine
        y1[i] = qExp(-i / 150.0);            // exponential envelope
    }

    // configure right and top axis to show ticks but no labels:
    // (see QCPAxisRect::setupFullAxesBox for a quicker method to do this)
    ui->customPlot->xAxis2->setVisible(true);
    ui->customPlot->xAxis2->setTickLabels(false);
    ui->customPlot->yAxis2->setVisible(true);
    ui->customPlot->yAxis2->setTickLabels(false);

    // make left and bottom axes always transfer their ranges to right and top axes:
    connect(ui->customPlot->xAxis, SIGNAL(rangeChanged(QCPRange)), ui->customPlot->xAxis2, SLOT(setRange(QCPRange)));
    connect(ui->customPlot->yAxis, SIGNAL(rangeChanged(QCPRange)), ui->customPlot->yAxis2, SLOT(setRange(QCPRange)));

    // pass data points to graphs:
    ui->customPlot->graph(0)->setData(x, y0);
    ui->customPlot->graph(1)->setData(x, y1);
    // let the ranges scale themselves so graph 0 fits perfectly in the visible area:
    ui->customPlot->graph(0)->rescaleAxes();
    // same thing for graph 1, but only enlarge ranges (in case graph 1 is smaller than graph 0):
    ui->customPlot->graph(1)->rescaleAxes(true);
    // Note: we could have also just called customPlot->rescaleAxes(); instead
    // Allow user to drag axis ranges with mouse, zoom with mouse wheel and select graphs by clicking:
    ui->customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectPlottables);
}