#ifndef INTERACTIONCANVAS_H
#define INTERACTIONCANVAS_H

#include <QLabel>
#include <QDebug>
#include <QMouseEvent>
#include <QList>
#include <QPoint>
#include <QPainter>

#include "line.h"
#include "rectangle.h"
#include "ellipse.h"
#include "polygon.h"

class InteractionCanvas : public QLabel
{
public:
    InteractionCanvas(QWidget *parent);
    ~InteractionCanvas();

    void addLine();
    void addRectangle();
    void addEllipse();
    void addPolygon();

    //QDom methods
    void read(QFile *file);
    void write(QFile *file);

protected:
    void mouseMoveEvent(QMouseEvent *mouseEvent);
    void mousePressEvent(QMouseEvent *mouseEvent);
    void mouseReleaseEvent(QMouseEvent *mouseEvent);
    void keyPressEvent(QKeyEvent *keyEvent);
    void keyReleaseEvent(QKeyEvent *keyEvent);

private:
    void changeSelectedLine(Line *newSelectedLine);
    void addNewLine(Line *newLine);
    void clearLines();

    QList<Line *> m_Lines;
    Line *m_NewLine;
    Line *m_SelectedLine;
    QPoint m_MousePressPoint;
    QPoint m_MouseReleasePoint;
    QPoint m_LastMousePosition;

    QDomDocument m_fileName;

protected:
    void paintEvent(QPaintEvent *paintEvent);
};

#endif // INTERACTIONCANVAS_H