#include "MyDrawRectItem.h"

MyDrawRectItem::~MyDrawRectItem()
{
}

void MyDrawRectItem::CountPerVertexCoord(double xCoord, double yCoord, int pointPos)
{
	//计算左下角位置
	QLineF leftDownLine = QLineF(
		m_rectX * 1000,
		m_rectY * 1000,
		xCoord,
		yCoord);

	double angle1 = leftDownLine.angleTo(m_levelLine); // 自己线和水平线之间的夹角
	double angle2 = angle1 - m_rotateAngle; //旋转之后的终点和水平线之间的夹角
	if (pointPos == 0)
	{
		double lineLength = m_height * 1000;
		m_leftDownX = (lineLength * cos(angle2 * PI_2 / H_ANGLE) + m_rectX * 1000) / 1000.00;
		m_leftDownY = (lineLength * sin(angle2 * PI_2 / H_ANGLE) + m_rectY * 1000) / 1000.00;
	} 
	else if (pointPos == 1)
	{
		double lineLength = m_width * 1000;
		m_rightTopX = (lineLength * cos(angle2 * PI_2 / H_ANGLE) + m_rectX * 1000) / 1000.00;
		m_rightTopY = (lineLength * sin(angle2 * PI_2 / H_ANGLE) + m_rectY * 1000) / 1000.00;
		//qDebug() << "222:" << lineLength <<" "<<m_rightTopX << " " << m_rightTopY;
	}else if (pointPos == 2)
	{
		double lineLength = sqrt(std::pow(m_width * 1000, 2) + std::pow(m_height * 1000, 2));
		m_rightDownX = (lineLength * cos(angle2 * PI_2 / H_ANGLE) + m_rectX * 1000) / 1000.00;
		m_rightDownY = (lineLength * sin(angle2 * PI_2 / H_ANGLE) + m_rectY * 1000) / 1000.00;
	}
	
}

void MyDrawRectItem::CountRectVertexCoord()
{
	CountPerVertexCoord(m_rectX * 1000, m_rectY * 1000 + m_height * 1000, 0);
	CountPerVertexCoord(m_rectX * 1000 + m_width * 1000, m_rectY * 1000, 1);
	CountPerVertexCoord(m_rectX * 1000 + m_width * 1000, m_rectY * 1000 + m_height * 1000, 2);
	update();
}

void MyDrawRectItem::SetDrawRectAttr(double x1, double y1, double width, double height)
{
	m_rectX = x1 / DIE_SCALE;
	m_rectY = y1 / DIE_SCALE;
	m_width = width / 100;
	m_height = height / 100;
	m_rotateAngle = 0.0;
	//设置当前线位置
	setPos(QPointF(x1, y1));
	//设置ID
	m_id = GlobalDefine::GetInstance()->GetItemId();
	//设置水平线
	m_levelLine.setP1(QPointF(x1, y1));
	m_levelLine.setP2(QPointF(x1 + 100, y1));

	m_translteType = NONE;

	m_backupWidth = m_width;
	m_backupHeight = m_height;

	//计算4个顶点位置
	CountRectVertexCoord();
}

void MyDrawRectItem::SetActualDieCoordAndUpdate(double x1, double y1, double width, double height, double angle)
{
	m_rectX = x1;
	m_rectY = y1;
	m_width = width;
	m_height = height;
	m_rotateAngle = angle;

	m_backupWidth = m_width;
	m_backupHeight = m_height;

	this->setRect(QRectF(0,0, width * DIE_SCALE, height * DIE_SCALE));
	setPos(x1 * DIE_SCALE, y1 * DIE_SCALE);
	// 计算4个顶点位置
	CountRectVertexCoord();

	setTransformOriginPoint(this->scenePos() - this->scenePos());
	setRotation(-m_rotateAngle);
	
}

void MyDrawRectItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
	QGraphicsRectItem::paint(painter, option, widget);

	QPen pen;
	pen.setWidth(FEATURE_POINT_LINE_WIDTH);
	painter->setPen(pen);
	painter->setBrush(FEATURE_POINT_COLOR);

	painter->drawEllipse(QPointF(rect().left(), rect().top()), FEATURE_POINT_SIZE / 5, FEATURE_POINT_SIZE / 5);
	painter->drawEllipse(QPointF(rect().left(), rect().bottom()), FEATURE_POINT_SIZE / 5, FEATURE_POINT_SIZE / 5);
	painter->drawEllipse(QPointF(rect().right(), rect().top()), FEATURE_POINT_SIZE / 5, FEATURE_POINT_SIZE / 5);
	painter->drawEllipse(QPointF(rect().right(), rect().bottom()), FEATURE_POINT_SIZE / 5, FEATURE_POINT_SIZE / 5);
}

void MyDrawRectItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
	if (event->button() == Qt::LeftButton)
	{
		emit signal_select(m_id);
		m_isMoustLeftPress = true;
		m_mousePressDownPos = event->scenePos();

		qDebug() <<"pos: "<< event->scenePos().x() << " " << event->scenePos().y() << " " << m_rightTopX << " " << m_rightTopY;

		if (abs(event->scenePos().x() - m_rightTopX * 100) <= FEATURE_POINT_SIZE &&
			abs(event->scenePos().y() - m_rightTopY * 100) <= FEATURE_POINT_SIZE)
		{
			m_translteType = SCALE;
		}
		else if (abs(event->scenePos().x() - m_leftDownX * 100) <= FEATURE_POINT_SIZE &&
			abs(event->scenePos().y() - m_leftDownY * 100) <= FEATURE_POINT_SIZE)
		{
			m_translteType = ROTATE;
		}
		else
		{
			m_translteType = MOVE;
		}
	}
}

void MyDrawRectItem::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
	if (m_translteType == MOVE)
	{
		setPos(event->scenePos().x() , event->scenePos().y());
		m_rectX = (double)this->scenePos().x() / 100.00;
		m_rectY = (double)this->scenePos().y() / 100.00;
	}
	else if (m_translteType == ROTATE)
	{
		QLineF mouseLine;
		mouseLine.setP1(this->scenePos());
		mouseLine.setP2(QPointF(event->scenePos().x(), event->scenePos().y()));

		QLineF leftDown = QLineF(this->scenePos().x(), this->scenePos().y(),
			this->scenePos().x(),
			this->scenePos().y() + m_height * DIE_SCALE);

		double angleNum = leftDown.angleTo(mouseLine);
		m_rotateAngle = angleNum;
		setRotation(-angleNum);
	}
	else if (m_translteType == SCALE) 
	{
		auto& nowMouseCoord = event->scenePos();
		double prop = ((double)event->scenePos().x() - (double)m_mousePressDownPos.x()) / 150.00;
		double scaleNum = m_initScale + prop;
		m_nowScale = scaleNum;
		this->setScale(m_nowScale);
		m_width = m_backupWidth * scaleNum;
		m_height = m_backupHeight * scaleNum;
		qDebug() << "after: " << m_nowScale <<" "<< m_width << " " << m_height;
	}
	//动作之后重新计算位置
	CountRectVertexCoord();
}

void MyDrawRectItem::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
	if (m_translteType == SCALE) {
		m_initScale = m_nowScale;
	}
}