#include "baseModelItem/electricBaseModelSvgItem.h"
#include "graphicsItem/itemControlHandle.h"

#include <QPainter>
#include <QStyleOption>
#include <QSvgRenderer>
#include <QDebug>

ElectricBaseModelSvgItem::ElectricBaseModelSvgItem(const QRect &rect, QGraphicsItem *parent)
    : GraphicsBaseModelItem(parent),m_pRender(nullptr)
{
    m_lastBoudingRect = rect;
    m_boundingRect = rect;
    m_dWidth = rect.width();
    m_dHeight = rect.height();
}

ElectricBaseModelSvgItem::ElectricBaseModelSvgItem(const ElectricBaseModelSvgItem& obj)
    :GraphicsBaseModelItem(obj)
{
    m_lastBoudingRect = obj.m_lastBoudingRect;
    m_icon = obj.m_icon;
    m_pRender = new QSvgRenderer(m_icon);
    setRotation(obj.rotation());
}

ElectricBaseModelSvgItem* ElectricBaseModelSvgItem::clone() const
{
    return new ElectricBaseModelSvgItem(*this);
}

ElectricBaseModelSvgItem::~ElectricBaseModelSvgItem()
{

}

QPainterPath ElectricBaseModelSvgItem::shape()
{
    QPainterPath path;
    double dHandleX = 0.0;
    double dHandleY = 0.0;
    path.addRect(m_boundingRect);
    return path;
}

void ElectricBaseModelSvgItem::updateCoordinate() //当执行了resie和editShape函数后，boundingRect发生了变换，需要将item的原点(以中心点为原点)校准至boundingRect.center()
{
    if (!parentItem())
    {
        QPointF pt1, pt2, delta;
        pt1 = mapToScene(QPointF(0, 0));
        pt2 = mapToScene(m_boundingRect.center());
        delta = pt1 - pt2;

        prepareGeometryChange();
        //将boundingRect设置成中心点和原点（也是默认变换原点），这样三点重合，有助于简化计算
        m_boundingRect = QRectF(-m_dWidth / 2, -m_dHeight / 2, m_dWidth, m_dHeight);
        //setTransformOriginPoint(m_boundingRect.center()); //变换中心默认为item的(0,0)点，所以不执行这句话也没有问题
        //更新bouondingRect后重回会显示位置会有变化，需要做对应的移动
        moveBy(-delta.x(), -delta.y());
        updateHandles();
    }

    m_lastBoudingRect = m_boundingRect;
}

void ElectricBaseModelSvgItem::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
    if(m_pRender)
    {
        m_pRender->render(painter,m_boundingRect);
    }

    painter->setPen(m_pen);
    painter->setBrush(m_brush);

    if (option->state & QStyle::State_Selected) //是选中状态,绘制选中框
    {
        renderSelectBackground(painter);
    }
    else
    {
        GraphicsBaseModelItem::paint(painter,option,widget);
    }
}

void ElectricBaseModelSvgItem::loadSvg(const QByteArray& data)
{
    if(m_pRender == nullptr){
        m_icon = data;
        m_pRender = new QSvgRenderer(data);
    }
}

void ElectricBaseModelSvgItem::move(const QPointF& point)
{
    moveBy(point.x(), point.y());
}

void ElectricBaseModelSvgItem::editShape(int nHandle,const QPointF& ptMouse)
{
    prepareGeometryChange();
    updateHandles();
}