#include <QDebug>

#include <QGraphicsSceneMouseEvent>

#include <QGraphicsPathItem>

#include "drawmapscene.h"

DrawMapScene::DrawMapScene(QObject *parent) :

    QGraphicsScene(parent),

    m_pen(Qt::yellow),

    m_brush(Qt::yellow)

{

    setSceneRect(0, 0, 4096, 2048);

    QLinearGradient gradient(0, 0, 0, 2048);

    gradient.setColorAt(0, QColor(60, 60, 155));

    gradient.setColorAt(1, QColor(155, 155, 60));

    setBackgroundBrush(QBrush(gradient));

    m_pen.setWidth(67);

    m_pen.setJoinStyle(Qt::RoundJoin);

    m_pen.setCapStyle(Qt::RoundCap);

    m_currPath = 0;

}

void DrawMapScene::mouseMoveEvent(QGraphicsSceneMouseEvent * mouseEvent)

{

    qDebug() << "move" << mouseEvent->scenePos();

    if(m_currPath && (mouseEvent->buttons() & Qt::LeftButton))

    {

        QPainterPath path = m_currPath->path();

        path.lineTo(mouseEvent->scenePos());

        m_currPath->setPath(path);

    }

}

void DrawMapScene::mousePressEvent(QGraphicsSceneMouseEvent * mouseEvent)

{

    qDebug() << "press" << mouseEvent->scenePos();

    m_currPath = addPath(QPainterPath(), m_pen);

    QPainterPath path = m_currPath->path();

    QPointF p = mouseEvent->scenePos();

    p += QPointF(0.01, 0.01);

    path.moveTo(p);

    path.lineTo(mouseEvent->scenePos());

    m_currPath->setPath(path);

}

void DrawMapScene::mouseReleaseEvent(QGraphicsSceneMouseEvent * mouseEvent)

{

    qDebug() << "release" << mouseEvent->scenePos();

    m_currPath = 0;

}

void DrawMapScene::undo()

{

    if(items().size())

        removeItem(items().first());

}