spectrumwindow.cpp
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#include "spectrumwindow.h"
#include "ui_spectrumwindow.h"
#include "mainwindow.h"
SpectrumWindow::SpectrumWindow(QWidget *parent) :
QDialog(parent),
ui(new Ui::SpectrumWindow)
{
ui->setupUi(this);
//install an event filter to detect user clicks
ui->spectrumPlot->installEventFilter(this);
//create a line for the current band
bandline = new QCPItemStraightLine(ui->spectrumPlot);
ui->spectrumPlot->addItem(bandline);
}
SpectrumWindow::~SpectrumWindow()
{
delete ui;
}
void SpectrumWindow::plotSpectrum(QVector<double> x, QVector<double> y){
//find the maximum and minimum values
double y_min = y[0];
double y_max = y[0];
for(int i=1; i<y.size(); i++){
if(y[i] < y_min) y_min = y[i];
if(y[i] > y_max) y_max = y[i];
}
//set the range of the y axis to the minimum and maximum spectrum values
ui->spectrumPlot->yAxis->setRange(y_min, y_max);
//add the graph to the plot
ui->spectrumPlot->graph(0)->setData(x, y);
//redraw the plot
ui->spectrumPlot->replot();
std::cout<<"Items in the plot: "<<ui->spectrumPlot->itemCount()<<std::endl;
std::cout<<bandline->point1->coords().x()<<", "<<bandline->point1->coords().y()<<std::endl;
}
void SpectrumWindow::initPlot(double x_min, double x_max, double y_min, double y_max, QString x_title, QString y_title){
// give the axes some labels:
ui->spectrumPlot->xAxis->setLabel(x_title);
ui->spectrumPlot->yAxis->setLabel(y_title);
// set axes ranges, so we see all data:
ui->spectrumPlot->xAxis->setRange(x_min, x_max);
ui->spectrumPlot->yAxis->setRange(y_min, y_max);
//add a graph to the plot
ui->spectrumPlot->addGraph();
//set the initial position of the band line
double xmid = (x_max + x_min) / 2;
std::cout<<"xmid: "<<xmid<<std::endl;
bandline->point1->setCoords(xmid, 0);
bandline->point2->setCoords(xmid, 1);
bandline->setPen(QPen(Qt::red));
ui->spectrumPlot->replot();
}
/// Update the image viewing widget so that it always fills the main window
void SpectrumWindow::resizeEvent(QResizeEvent* event){
//get the current window size
QSize winsize = event->size();
//match the plot to the window
ui->spectrumPlot->setFixedSize(winsize.width(), winsize.height());
}
bool SpectrumWindow::eventFilter(QObject *target, QEvent *event)
{
/*if(target == ui->spectrumPlot && event->type() == QEvent::MouseMove)
{
QMouseEvent *_mouseEvent = static_cast<QMouseEvent*>(event);
//get the window position of the click
QPoint pixel = _mouseEvent->pos();
//calculate the position of the click in the image
double x = ui->spectrumPlot->xAxis->pixelToCoord(pixel.x());
double y = ui->spectrumPlot->yAxis->pixelToCoord(pixel.y());
//set the position of the band line
bandline->point1->setCoords(x, 0);
bandline->point2->setCoords(x, 1);
std::cout<<"coords set to: "<<x<<std::endl;
}
else */
if(target == ui->spectrumPlot && event->type() == QEvent::MouseButtonPress)
{
QMouseEvent *_mouseEvent = static_cast<QMouseEvent*>(event);
//get the window position of the click
QPoint pixel = _mouseEvent->pos();
//calculate the position of the click in the image
double x = ui->spectrumPlot->xAxis->pixelToCoord(pixel.x());
double y = ui->spectrumPlot->yAxis->pixelToCoord(pixel.y());
//tell the parent MainWindow that a point on the spectrum was selected
((MainWindow*)parent())->mousePressSpectrum(x, y);
//set the position of the band line
bandline->point1->setCoords(x, 0);
bandline->point2->setCoords(x, 1);
std::cout<<"coords set to: "<<x<<std::endl;
//replot the spectrum with the new band line position
ui->spectrumPlot->replot();
}
return false;
}