#include <QtSql/QSqlDatabase>
#include <QtSql/QSqlQuery>
#include <QtGui>
#include <QObject>
#include <QInputDialog>
#include <QDebug>
#include "graph.h"

Graph::Graph(QMainWindow *parent) :
    QMainWindow(parent)
{
    customPlot = new QCustomPlot;
    customPlot->setEnabled(false);

    srand(QDateTime::currentDateTime().toTime_t());

    customPlot->setInteractions(QCustomPlot::iRangeDrag | QCustomPlot::iRangeZoom | QCustomPlot::iSelectAxes |
                                    QCustomPlot::iSelectLegend | QCustomPlot::iSelectPlottables | QCustomPlot::iSelectTitle);
    customPlot->setRangeDrag(Qt::Horizontal|Qt::Vertical);
    customPlot->setRangeZoom(Qt::Horizontal|Qt::Vertical);
    customPlot->xAxis->setRange(0, 1);
    customPlot->yAxis->setRange(0, 1);
    customPlot->yAxis->setRangeReversed(true);
    customPlot->setupFullAxesBox();
    customPlot->xAxis->setLabel("x Axis");
    customPlot->yAxis->setLabel("y Axis");
    customPlot->legend->setVisible(true);
    QFont legendFont = font();
    legendFont.setPointSize(10);
    customPlot->legend->setFont(legendFont);
    customPlot->legend->setSelectedFont(legendFont);
    customPlot->legend->setSelectable(QCPLegend::spItems); // legend box shall not be selectable, only legend items


    // connect slot that ties some axis selections together (especially opposite axes):
    connect(customPlot, SIGNAL(selectionChangedByUser()), this, SLOT(selectionChanged()));
    // connect slots that takes care that when an axis is selected, only that direction can be dragged and zoomed:
    connect(customPlot, SIGNAL(mousePress(QMouseEvent*)), this, SLOT(mousePress()));
    connect(customPlot, SIGNAL(mouseWheel(QWheelEvent*)), this, SLOT(mouseWheel()));

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

    // connect some interaction slots:
    connect(customPlot, SIGNAL(titleDoubleClick(QMouseEvent*)), this, SLOT(titleDoubleClick()));
    connect(customPlot, SIGNAL(axisDoubleClick(QCPAxis*,QCPAxis::SelectablePart,QMouseEvent*)), this, SLOT(axisLabelDoubleClick(QCPAxis*,QCPAxis::SelectablePart)));
    connect(customPlot, SIGNAL(legendDoubleClick(QCPLegend*,QCPAbstractLegendItem*,QMouseEvent*)), this, SLOT(legendDoubleClick(QCPLegend*,QCPAbstractLegendItem*)));

    // connect slot that shows a message in the status bar when a graph is clicked:
    connect(customPlot, SIGNAL(plottableClick(QCPAbstractPlottable*,QMouseEvent*)), this, SLOT(graphClicked(QCPAbstractPlottable*)));

    // setup policy and connect slot for context menu popup:
    customPlot->setContextMenuPolicy(Qt::CustomContextMenu);
    connect(customPlot, SIGNAL(customContextMenuRequested(QPoint)), this, SLOT(contextMenuRequest(QPoint)));






    // Oppretter databasen med databasedriver QODBC
    db = QSqlDatabase::addDatabase("QODBC");

    // Setter maksverdiene for x og y aksene til -1 for å være sikker på at de blir overskrevet
    xMax = -1;
    yMax = -1;

    // Setter startverdi for fargevelger variabelen
    colorCounter = 0;
}

Qt::GlobalColor Graph::getColor()
{
    // Oppretter en tabell av farger, og legger inn noen farger
    Qt::GlobalColor colorArray[7] = {Qt::red, Qt::green, Qt::cyan, Qt::magenta, Qt::yellow, Qt::gray, Qt::darkRed};
    int temp;

    // Om telleren har nådd maks, nullstill teller og return. Hvis ikke, øk teller og return
    if (colorCounter == 6) {
        temp = colorCounter;
        colorCounter = 0;
        return colorArray[temp];
    }
    else {
        temp = colorCounter;
        colorCounter ++;
        return colorArray[temp];
    }

}