#include "interactioncanvas.h"

InteractionCanvas::InteractionCanvas()
{
    setFocusPolicy(Qt::StrongFocus);
    setMouseTracking(true);
    m_Line = NULL;
}

InteractionCanvas::~InteractionCanvas()
{
    delete tempPainter;
    tempPainter = NULL;
    delete normalPainter;
    normalPainter = NULL;
}

void InteractionCanvas::mouseMoveEvent(QMouseEvent *mouseEvent)
{
    qDebug() << "InteractionCanvas:" << mouseEvent->pos();
    m_LastMousePosition = mouseEvent->pos();

    if (m_Line)
    {
        m_Line->setP2(m_LastMousePosition);
        update();
    }
}


void InteractionCanvas::mousePressEvent(QMouseEvent *mouseEvent)
{
    qDebug() << "InteractionCanvas: Mouse: pressed:" << mouseEvent->button();

    if (mouseEvent->button() == Qt::LeftButton)
    {
        if (m_Line)
        {
            delete m_Line;
            m_Line = NULL;
        }

        m_Line = new Line();
        m_MousePressPoint = mouseEvent->pos();
        m_LastMousePosition = m_MousePressPoint;
        m_Line->setP1(m_MousePressPoint);
        m_Line->setP2(m_LastMousePosition);
    }

    if (mouseEvent->button() ==  Qt::RightButton)
    {
        for(int i = 0; i < m_Lines.size(); i++)
        {
            m_Lines[i].setSelected(m_Lines[i].isHit(mouseEvent->pos()));
        }
    }
}

void InteractionCanvas::mouseReleaseEvent(QMouseEvent *mouseEvent)
{
    qDebug() << "InteractionCanvas: Mouse: released:" << mouseEvent->button();

    if (mouseEvent->button() == Qt::LeftButton)
    {

        m_MouseReleasePoint = mouseEvent->pos();
        m_Line->setP2(m_MouseReleasePoint);
        m_Line->setSelected(false);
        m_Lines.append(*m_Line);
        m_Line = NULL;
    }

    update();
}

void InteractionCanvas::keyPressEvent(QKeyEvent *keyEvent)
{
    qDebug() << "InteractionCanvas: Key: pressed:" << keyEvent->key() << "(" <<
             keyEvent->text() << ")" << (keyEvent->isAutoRepeat() ? "druck" : "");

    if(!m_Lines.isEmpty() && keyEvent->key() == Qt::Key_Z && keyEvent->modifiers() == Qt::ControlModifier)
    {
        m_Lines.removeLast();
        update();
    }
}

void InteractionCanvas::keyReleaseEvent(QKeyEvent *keyEvent)
{
    qDebug() << "InteractionCanvas: Key: released:" << keyEvent->key() << "(" <<
             keyEvent->text() << ")" << (keyEvent->isAutoRepeat() ? "druck" : "");
}


void InteractionCanvas::paintEvent(QPaintEvent *paintEvent)
{
    // Setup the Painters
    QPainter painter(this);

    if (m_Line)
    {
        m_Line->draw(&painter);
    }

    foreach (Line line, m_Lines)
    {
        line.draw(&painter);
    }
}