qncggraphicsinterface.cpp

#include "qncggraphicsinterface.h"

QncgGraphicsInterface::QncgGraphicsInterface(QncgGraphicsEntity* parent)
    : QncgGraphicsEntity(parent)
{
    setncgType(Qncg::Interface);
}

QncgGraphicsInterface::~QncgGraphicsInterface()
{

}

void QncgGraphicsInterface::adjust(bool avoidCollision)
{
    QncgGraphicsEntity* parent = getncgGraphicsParent();

    if (parent != NULL){
        // setting
        QPointF pointa(parent->getWidth()/2, parent->getHeight()/2);
        QPointF pointb(getLeft() + getWidth()/2, getTop() + getHeight()/2);

        if (pointa == pointb){
            pointb.setX(pointa.x());
            pointb.setY(pointa.y() - 10);
        }

        QLineF line(pointa,pointb);

        // adjusting
        if (parent->contains(pointb)){
            QPointF pointn = pointb;

            qreal index = 1.0;

            if (parent->contains(line.pointAt(index+0.01))){
                while(parent->contains(pointn)){
                    index += 0.01;

                    pointn = line.pointAt(index);
                }
            }

            setTop(pointn.y() - getHeight()/2);
            setLeft(pointn.x() - getWidth()/2);

        }else{
            QPointF pointn = pointb;

            qreal index = 1.0;

            if (!parent->contains(line.pointAt(index-0.01))){
                while(!parent->contains(pointn)){
                    index -= 0.01;

                    pointn = line.pointAt(index);
                }
            }

            setTop(pointn.y() - getHeight()/2);
            setLeft(pointn.x() - getWidth()/2);
        }
    }

    // redrawing
    if (scene() != NULL){
        scene()->update();
    }
}

void QncgGraphicsInterface::move(QGraphicsSceneMouseEvent* event)
{
    // setting
    qreal x = getLeft();
    qreal y = getTop();

    QncgGraphicsEntity* parent = getncgGraphicsParent();

    qreal minx;
    qreal miny;

    if (parent != NULL){
        minx = 4;
        miny = 4;
    }else{
        minx = 0;
        miny = 0;
    }

    qreal maxx;
    qreal maxy;

    if (parent != NULL){
        maxx = parent->getWidth() - getWidth() - 4;
        maxy = parent->getHeight() - getHeight() - 4;
    }else{
        maxx = scene()->width() - getWidth();
        maxy = scene()->height() - getHeight();
    }

    qreal dx = event->pos().x() - getPressLeft(); // (x1 - x0)
    qreal dy = event->pos().y() - getPressTop();  // (y1 - y0)

    qreal nextx = x + dx;
    qreal nexty = y + dy;

    // moving
    setMoveTop(nexty);
    setMoveLeft(nextx);

    // redrawing
    if (scene() != NULL){
        scene()->update();
    }
}

void QncgGraphicsInterface::resize(QGraphicsSceneMouseEvent* event)
{
    // setting
    qreal x = getLeft();
    qreal y = getTop();
    qreal w = getWidth();
    qreal h = getHeight();

    QncgGraphicsEntity* parent = getncgGraphicsParent();

    qreal minx;
    qreal miny;
    qreal minw;
    qreal minh;

    if (parentItem() != NULL){
        minx = 4;
        miny = 4;
        minw = -1; // not used
        minh = -1; // not used
    }else{
        minx = 0;
        miny = 0;
        minw = -1; // not used
        minh = -1; // not used
    }

    qreal maxx;
    qreal maxy;
    qreal maxw;
    qreal maxh;

    if (parentItem() != NULL){
        maxx = parent->getWidth() - getWidth() - 4;
        maxy = parent->getHeight() - getHeight() - 4;
        maxw = parent->getWidth() - 4;
        maxh = parent->getHeight() - 4;
    }else{
        maxx = scene()->width() - getWidth();
        maxy = scene()->height() - getHeight();
        maxw = scene()->width();
        maxh = scene()->height();
    }

    qreal dx = event->pos().x() - getPressLeft();    // (x1 - x0)
    qreal dy = event->pos().y() - getPressTop();     // (y1 - y0)
    qreal dw = -dx;
    qreal dh = -dy;

    qreal nextx = x + dx;
    qreal nexty = y + dy;
    qreal nextw = w + dw;
    qreal nexth = h + dh;

    // adjusting
    switch(getncgResize()){

    case Qncg::TopLeft:{
        break;
    }

    case Qncg::Top:{
        nextx = x; // fixed x
        nextw = w; // fixed width

        break;
    }

    case Qncg::TopRight:{
        nextx = x; // fixed x

        nextw = w - dw;

        break;
    }

    case Qncg::Right:{
        nextx = x; // fixed x

        nextw = w - dw;

        nexty = y; // fixed y
        nexth = h; // fixed height

        break;
    }

    case Qncg::BottomRight:{
        nextx = x; // fixed x

        nextw = w - dw;

        nexty = y; // fixed y

        nexth = h - dh;

        break;
    }

    case Qncg::Bottom:{
        nextx = x; // fixed x
        nextw = w; // fixed width

        nexty = y; // fixed y

        nexth = h - dh;

        break;
    }

    case Qncg::BottomLeft:{
        nexty = y; // fixed y

        nexth = h - dh;

        break;
    }

    case Qncg::Left:{
        nexty = y; // fixed y
        nexth = h; // fixed height

        break;
    }
    default:
        break;
    }

    // resizing
    setResizeTop(nexty);
    setResizeLeft(nextx);
    setResizeWidth(nextw);
    setResizeHeight(nexth);

    // redrawing
    if (scene() != NULL){
        scene()->update();
    }
}