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#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent)
{
    inputHistogram = new HistogramWidget;
    setCentralWidget(inputHistogram);
}

MainWindow::~MainWindow() {}

#include "histogramwidget.h"

HistogramWidget::HistogramWidget(QWidget *parent) :
    QWidget(parent)
{
    setMouseTracking(true);

    histogramMainLayout = new QHBoxLayout;
    histogramGroupBox = new QGroupBox(tr("Гистограмма"));

    histogramGroupBoxLayout = new QHBoxLayout;

    histogramChartLayout = new QHBoxLayout;
    histogramChart = new QChart;
    histogramChart->setTitle(tr("Визуализация данных"));

    histogramChart->installEventFilter(this);

    histogramChartView = new QChartView(histogramChart);
    histogramChartView->setRenderHint(QPainter::Antialiasing);

    histogramChartLayout->addWidget(histogramChartView);

    histogramGroupBoxLayout->addLayout(histogramChartLayout);

    histogramGroupBox->setLayout(histogramGroupBoxLayout);

    histogramMainLayout->addWidget(histogramGroupBox);

    setLayout(histogramMainLayout);

    sum = 0;
}

HistogramWidget::~HistogramWidget() {}

bool HistogramWidget::eventFilter(QObject *watched, QEvent *event)
{
    if (watched == histogramChart && event->type() == QEvent::MouseMove)
    {
        QMessageBox::information(this, "", "");
        histogramChart->setTitle(QString::number(sum++));
    }

    return false;
}

bool HistogramWidget::eventFilter(QObject *watched, QEvent *event)
{
   if (watched != histogramChart)
       return false;

    if (event->type() == QEvent::MouseMove)  {
        QMessageBox::information(this, "", "");
        histogramChart->setTitle(QString::number(sum++));
        return true;
    }

    return false;
}

void HistogramWidget::mouseMoveEvent(QMouseEvent *event)
{
    histogramChart->setTitle(QString::number(sum--));
}