#include "CameraModifyScene.h"



CameraModifyScene::CameraModifyScene(QObject* parent)
{
	//set the parent
	this->setParent(parent);
	//set the scene rect
	this->setSceneRect(0, 0, CAMERA_SCENE_WIDTH, CAMERA_SCENE_HEIGHT);
	//set the background color
	this->setBackgroundBrush(QColor(64, 64, 64, 255));

	InitConnect();

}

void CameraModifyScene::InitConnect()
{
	//connect the cameraitem modify to the CameraItemModified slots
	connect(this, &CameraModifyScene::CameraItemModified, this, &CameraModifyScene::OnCameraItemModified);
	//connect the cameraitem delete to the cameraitemModified slots
	connect(this,&CameraModifyScene::CameraItemDelete, this, &CameraModifyScene::OnCameraItemModified);

	

}

void CameraModifyScene::mousePressEvent(QGraphicsSceneMouseEvent* event)
{
	//修改为由图元发送消息
	// 
	// 
	// 
 //   QPointF CurMousePt=event->pos();

	//QList<QGraphicsItem*> ItemsInScene = this->items();

	//for each (auto iter in ItemsInScene)
	//{
	//	 //judge the mouse point is in the CameraItem or not
	//	if (//iter->type() == CameraItem::Type &&
	//		IsPointInRect(CurMousePt, iter->boundingRect()))
	//	{
	//		//set the CameraItem is selected
	//		((CameraItem*)iter)->bSelected = true;
	//		//emit the CameraItemSelected signal
	//		emit CameraItemSelected((CameraItem*)iter);
	//		//break the loop
	//		break;
	//	}
	//}

	//first this function is not block
	//QGraphicsScene::mousePressEvent(event);
	//int Type = event->type();
	////QPointF CurMousePt = event->pos();
	//if ( Type == QGraphicsSceneMouseEvent::GraphicsSceneMouseDoubleClick)
	//{

	//	//check the select model
	//	if (bSelectModel)
	//	{
	//		//under this line is the single select model
	//		//get the current selected CameraItem
	//		CameraItem* pCurSelectedCameraItem = GetCurrentSelectedCameraItem();

	//		if (!pCurSelectedCameraItem->bActive)
	//			return;

	//		pCameraGripper->EmptyMagazine();

	//		pCameraGripper->fillingGripper(pCurSelectedCameraItem);

	//	}
	//	else
	//	{
	//		//under this line is the multi select model
	//		//get the current selected CameraItems
	//		CameraItem* pCurSelectedCameraItem = GetCurrentSelectedCameraItem();
	//		//get the cameraitem row and col index
	//		int nRow = pCurSelectedCameraItem->nItemRowIndex;
	//		int nCol = pCurSelectedCameraItem->nItemColIndex;

	//		//bring the item which is in the same row with the current selected CameraItem

	//		//clear the gripper
	//		pCameraGripper->EmptyMagazine();

	//		//first get all the items in the scene
	//		QList<QGraphicsItem*> ItemsInScene = this->items();

	//		for (auto& item : ItemsInScene)
	//		{
	//			CameraItem* Item = (CameraItem*)item;
	//			if (Item->nItemRowIndex == nRow)
	//			{
	//				pCameraGripper->fillingGripper(Item);
	//			}
	//		}
	//	}
	//}
}

void CameraModifyScene::AddCameraItem(CameraItem* pItem)
{
	//add the CameraItem to the scene
	this->addItem(pItem);
	
	//connect the CameraItem mouse press event to the CameraItemMousePressEvent slots
	connect(pItem, &CameraItem::CameraItemPressed, this, &CameraModifyScene::OnCameraItemMousePressEvent);

	//emit the Cameraitem modify
	emit CameraItemModified();



}

void CameraModifyScene::RemoveCameraItem(CameraItem* pItem)
{
	int nDeleteIndex = pItem->nItemColIndex;

	//remove the CameraItem from the scene
	this->removeItem(pItem);

	//deconstration the cameraitem 
	delete pItem;

	QList<QGraphicsItem*> List = this->items();

	for (auto& item : List)
	{
		//trun the pointer into CameraItem
		CameraItem* pIter = (CameraItem * )item;
		if (pIter->nItemColIndex > nDeleteIndex)
		{
			pIter->nItemColIndex--;
		}
	}

	//emit the CameraItemDelete signal
	emit CameraItemDelete();
}

CameraItem* CameraModifyScene::GetCurrentSelectedCameraItem()
{
	//get the CameraItem in the scene
	QList<QGraphicsItem*> ItemsInScene = this->items();
	for each (auto iter in ItemsInScene)
	{
		if (//iter->type() == CameraItem::Type &&
			((CameraItem*)iter)->bSelected)
		{
			return (CameraItem*)iter;
		}
	}
	return nullptr;
}

void CameraModifyScene::SetSelectModel(bool bModel)
{
	//set the select model
	bSelectModel = bModel;
}

void CameraModifyScene::SetGripper(CameraGripper* pGripper)
{
	pCameraGripper = pGripper;
}

void CameraModifyScene::OnCameraItemDelete(CameraItem* pItem)
{
	emit CameraItemModified();
}

void CameraModifyScene::OnCameraItemSelected(CameraItem* pItem)
{
	//set the CameraItem is selected
	pItem->bSelected = true;
	//and other CameraItem is unselected
	QList<QGraphicsItem*> ItemsInScene = this->items();

	for each (auto iter in ItemsInScene)
	{
		//if (iter->type() == CameraItem::Type && iter != pItem)
		{
			((CameraItem*)iter)->bSelected = false;
		}
	}
	//emit the CameraItemSelected signal
	emit CameraItemSelected(pItem);
}

void CameraModifyScene::OnCameraItemUnSelected(CameraItem* pItem)
{
}

void CameraModifyScene::OnCameraItemMousePressEvent(CameraItem* pItem)
{
	//set the CameraItem is selected
	//pItem->bSelected = true;
	////and other CameraItem is unselected
	//QList<QGraphicsItem*> ItemsInScene = this->items();
	//for each (auto iter in ItemsInScene)
	//{
	//	if (//iter->type() == CameraItem::Type &&
	//		iter != pItem)
	//	{
	//		((CameraItem*)iter)->bSelected = false;
	//	}
	//}

	//emit the CameraItemSelected signal
	emit CameraItemModified();

}

void CameraModifyScene::OnCameraItemModified()
{
	//rearrange all item in the scene and paint the scene
	RearrangeAllItem();
	this->update();
}

bool CameraModifyScene::IsPointInRect(QPointF Point, QRectF Rect)
{
	if (Point.x() >= Rect.left() 
		&& Point.x() <= Rect.right() 
		&& Point.y() >= Rect.top() 
		&& Point.y() <= Rect.bottom())
	{
		return true;
	}
	return false;
}

void CameraModifyScene::RearrangeAllItem()
{
	//get the CameraItem in the scene
	QList<QGraphicsItem*> ItemsInScene = this->items();
	//get the CameraItem count
	int CameraItemCount = 0;
	for each (auto iter in ItemsInScene)
	{
		//if (iter->type() == CameraItem::Type)
		{
			CameraItemCount++;
		}
	}
	//all cameraitem width is 100
	//the orgin point is the center of scene
	//make all cameraitem in the scene arrange in a line 

	//calculate the start point
	QPointF StartPoint = QPointF(CAMERAITEM_WIDTH / 2 , CAMERAITEM_HEIGHT /2);//+ ((CameraItemCount) * 0.5) * 100
	//on this account the cameraitem width is 100
	//calculate the interval
	int Interval = CAMERAITEM_WIDTH;
	//move all cameraitem to the right position
	for each (auto iter in ItemsInScene)
	{
		//if (iter->type() == CameraItem::Type)
		{
			//iter->setPos(StartPoint.x() - ((CameraItem*)iter)->m_CameraInfo.nHorizonOffset,StartPoint.y() + ((CameraItem*)iter)->m_CameraInfo.nVerticalOffset);
			((CameraItem*)iter)->CurrentPos =
				QPoint(StartPoint.x() + ((CameraItem*)iter)->m_CameraInfo.nHorizonOffset + ((CameraItem*)iter)->nItemColIndex * Interval,
					StartPoint.y() + ((CameraItem*)iter)->m_CameraInfo.nVerticalOffset + ((CameraItem*)iter)->nItemRowIndex * Interval);
			
			//((CameraItem*)iter)->CurrentPos.rx() -= CAMERAITEM_WIDTH / 2;
			//((CameraItem*)iter)->CurrentPos.ry() -= CAMERAITEM_HEIGHT / 2;
			//StartPoint.setX(StartPoint.x() - Interval);
		}
	}


}