#include "WindowAppUiView.h"
#include "WindowAppUiTool.h"
#include "UiManager.h"
#include "WindowAppUiNavView.h"
#include "CommonDraw.h"
#include "WindowAppUiFrame.h"
#include "VPCommand.h"

#include "vpControls/VControlObject.h"

WindowAppUiView::WindowAppUiView(QWidget *parent)
	: QGraphicsView(parent)
	, m_pBkImage(nullptr)
	, m_parentFrame(nullptr)
	, m_pUiScene(nullptr)
	, m_nGridSize(UI_DEFAULT_GRID_SIZE)
{
	// 设置为接收拖拽
	this->setAcceptDrops(true);
	
	// 初始化方格背景（只需要初始化一次即可）
	this->initBkImage();

	this->setBackgroundRole(QPalette::Light);
	this->setAutoFillBackground(true);

	m_pRubberBand = nullptr;

	// 设置View大小
	this->resize(DEFAULT_UIVIEW_WIDTH + 1, DEFAULT_UIVIEW_HEIGHT+ 1);

	// 初始化并绑定Scene
	m_pUiScene = new WindowAppUiScene(this);
	//QRectF rc = this->rect();
	m_pUiScene->setSceneRect(QRectF(0, 0, DEFAULT_UIVIEW_WIDTH, DEFAULT_UIVIEW_HEIGHT));
	this->setScene(m_pUiScene);
	this->centerOn(0, 0);

	// 全界面刷新，防止出现拖尾
	this->setViewportUpdateMode(QGraphicsView::FullViewportUpdate);

	//设置橡皮筋选择选项
	this->setDragMode(QGraphicsView::RubberBandDrag);

	// 设置抗锯齿（解决link 拖拽的时候，预览线有锯齿）
	this->setRenderHint(QPainter::Antialiasing, true);
}


WindowAppUiView::~WindowAppUiView()
{
	RELEASE(m_pBkImage);
}


/// <summary>
/// 初始化
/// </summary>
/// <param name="strTitle"></param>
/// <param name="navView"></param>
/// <param name="objectController"></param>
void WindowAppUiView::init(const QString& strTitle, WindowAppUiNavView* navView, WindowAppUiFrame* parentFrame, ObjectController* objectController)
{
	// 设置页面名称
	this->m_strPageName = strTitle;

	// 2022-8-30 加入，绑定所属的Frame
	this->m_parentFrame = parentFrame;

	// 绑定属性表
	m_pUiScene->m_pPropertyController = objectController;

	// 将当前Scene绑定到鸟瞰图中进行同步
	navView->setScene(m_pUiScene);
	// 绑定同步的鸟瞰图
	navView->setMainView(this);
	// 调整View
	navView->fitInView(navView->sceneRect(), Qt::KeepAspectRatio);

	// 向UI Manager注册本View
	g_pUiManager->registerNewUi(this);

	// 与Scene一起设置为左对齐
	this->setAlignment(Qt::AlignLeft | Qt::AlignTop);
}


/// <summary>
/// 初始化方格背景
/// </summary>
void WindowAppUiView::initBkImage()
{
	//  棋盘格背景 栅格背景
#if 0
	m_pBkImage = new QPixmap(32, 32);
	QColor color1(60, 60, 60);
	QColor color2(45, 45, 45);
	m_pBkImage->fill(color1);
	QPainter painter1(m_pBkImage);
	painter1.fillRect(0, 0, 16, 16, color2);
	painter1.fillRect(16, 16, 16, 16, color2);
	painter1.end();
#else
	m_pBkImage = new QPixmap(QSize(static_cast<int>(width()), static_cast<int>(height())));
	m_pBkImage->fill(qRgb(61, 61, 61));
// 	QPainter painter(m_pBkImage);
// 	int gridSize = 10;
// 	const int maxX = static_cast<int>(std::ceil(width()) / gridSize) * gridSize;
// 	const int maxY = static_cast<int>(std::ceil(height()) / gridSize) * gridSize;
// 	painter.setPen(qRgb(100, 100, 120));
// 	painter.setBrush(Qt::NoBrush);
// 	for (int i = 0; i < maxX; i += gridSize)
// 	{
// 		for (int j = 0; j < maxY; j += gridSize)
// 		{
// 			painter.drawPoint(i, j);
// 		}
// 	}
#endif

}


/// <summary>
/// 绘制界面背景
/// </summary>
/// <param name="painter"></param>
/// <param name="rect"></param>
void WindowAppUiView::drawBackground(QPainter* painter, const QRectF& rect)
{
	if (m_pBkImage)
	{
		painter->drawTiledPixmap(rect, *m_pBkImage);
	}

	// 计算坐标
	int nLeft = 0;
	int nTop = 0;

	int nWwidth = width() ;
	int nHeight = height() ;

	int nStepW = (nWwidth + nLeft) / 3;
	int nStepH = (nHeight + nTop) / 3;

	painter->setPen(UI_LINE_BK_PEN);

	// 画两条横线
	painter->drawLine(QLine(nLeft, nStepH, nWwidth, nStepH));
	painter->drawLine(QLine(nLeft, nStepH * 2, nWwidth, nStepH * 2));

	// 画两条竖线
	painter->drawLine(QLine(nStepW, nTop, nStepW, nHeight));
	painter->drawLine(QLine(nStepW * 2, nTop, nStepW * 2, nHeight));


	// 绘制背景栅格点
	const int maxX = static_cast<int>(std::ceil(width()) / UI_DEFAULT_GRID_SIZE) * UI_DEFAULT_GRID_SIZE;
	const int maxY = static_cast<int>(std::ceil(height()) / UI_DEFAULT_GRID_SIZE) * UI_DEFAULT_GRID_SIZE;
	painter->setPen(UI_POINT_BK_PEN);
	painter->setBrush(Qt::NoBrush);
	for (int i = 0; i < maxX; i += UI_DEFAULT_GRID_SIZE)
	{
		for (int j = 0; j < maxY; j += UI_DEFAULT_GRID_SIZE)
		{
			painter->drawPoint(i, j);
		}
	}
}


/// <summary>
/// 控件拖动完毕，在指定位置生成新的控件
/// </summary>
/// <param name="event"></param>
void WindowAppUiView::dropEvent(QDropEvent* event)
{
	//根据最后按下的控件位置生成控件
	QPoint point = event->pos();

	WindowAppUiTool* source = qobject_cast<WindowAppUiTool*>(event->source());
	if (source)
	{
		int row = source->currentRow();
		if (row < 0)
		{
			return;
		}

		//// 生成控件
		//VControlObject* pNewControl = m_pUiScene->newControl(row, point);
		//// 向UI注册本控件（2022-10-7移到了Scene中进行操作）
		//g_pUiManager->regiterNewControl(pNewControl, this);

		// 将界面中用户选择的行数转换成对应的valueType
		VALUE_TYPE controlType = (VALUE_TYPE)(row + (int)VALUE_TYPE::Control_Base + 1);

		// 2022-10-7，将UI控件的添加整合进Undo体系
		UiControlAddCommand* controlAddCommand = new UiControlAddCommand(m_pUiScene, controlType, mapToScene(point).toPoint());
		m_pUiScene->m_CommandManager.executeCommand(controlAddCommand);

		// 表示本事件可以在本窗体中拖动对象
		event->acceptProposedAction();
		return;
	}
	else
	{
		event->ignore();
		QWidget::dropEvent(event);
	}
}


///// <summary>
///// 当控件正在拖动过程中
///// </summary>
///// <param name="event"></param>
//void WindowAppUiView::dragEnterEvent(QDragEnterEvent* event)
//{
//	//if (event->mimeData()->hasFormat("application/x-qabstractitemmodeldatalist")) {
//	event->setDropAction(Qt::MoveAction);
//	event->accept();
//	//}
//	//else {
//	//	event->ignore();
//	//}
//}


/// <summary>
/// 拖动中的移动消息
/// </summary>
/// <param name="event"></param>
void WindowAppUiView::dragMoveEvent(QDragMoveEvent* event)
{
	event->acceptProposedAction();
	event->accept();
}


//鼠标在窗体中按下时，创建一个QRubberBand 类，QRubberBand::Rectangle 是设置橡皮筋线的类型，
//这种线的效果是描绘了一个方形的区域，还有一种是QRubberBand::Line，则为一个被直线填满的方形区域，
//相当于一个阴影的方形区域。QRubberBand 应用最多的函数是 setGeometry(),其作用是设置了橡皮筋线的位置及大小。
void WindowAppUiView::mousePressEvent(QMouseEvent* e)
{
	m_tmpPoint = e->pos();
	if (!m_pRubberBand)
	{
		m_pRubberBand = new QRubberBand(QRubberBand::Line, this);
	}
	m_pRubberBand->setGeometry(QRect(m_tmpPoint, QSize()));
	m_pRubberBand->show();
}


//在鼠标按下，并且鼠标发生移动的时候，这时就可以会出橡皮线的区域，
//鼠标拖动事件函数重载如下 改区域的大小由QRect(origin,e->pos()).normalized()) 来体现，
//其中normalized() 函数返回的也是一个QRect的对象，不过该对象的长和宽的值都是大于零时值
void WindowAppUiView::mouseMoveEvent(QMouseEvent* e)
{
	if (m_pRubberBand)
	{
		m_pRubberBand->setGeometry(QRect(m_tmpPoint, e->pos()).normalized());
	}
}


/// <summary>
/// 当鼠标松开时，橡皮筋线就可以隐藏了
/// </summary>
/// <param name="e"></param>
void WindowAppUiView::mouseReleaseEvent(QMouseEvent* e)
{
	Q_UNUSED(e);

	if (m_pRubberBand)
	{
		m_pRubberBand->hide();
	}
}


/// <summary>
/// 尺寸改变后，同步调整Scene的尺寸
/// </summary>
/// <param name="resizeEvent"></param>
void WindowAppUiView::resizeEvent(QResizeEvent* resizeEvent)
{
	// qDebug() << "WindowAppUiView::resizeEvent - " << resizeEvent->size();

	int newWidth = resizeEvent->size().width();
	int newHeight = resizeEvent->size().height();

	m_pUiScene->setSceneRect(QRectF(0, 0, newWidth, newHeight));

	emit navigatorViewRequired(true, transform());
}


/// <summary>
/// 序列化
/// </summary>
/// <param name="out"></param>
/// <param name="pView"></param>
/// <returns></returns>
QDataStream& operator<<(QDataStream& out, WindowAppUiView* pView)
{
	if (pView != nullptr)
	{
		// 序列化UI中的控件
		pView->uiScene()->serialized(out, false);

		// 序列化Frame中的参数
		pView->m_parentFrame->serialized(out, false);
	}
	// Error
	else
	{
		vDebug() << "[Error] WindowAppUiView - operator<< failed, pView == nullptr";
	}	

	return out;
}


/// <summary>
/// 反序列化
/// </summary>
/// <param name="in"></param>
/// <param name="pView"></param>
/// <returns></returns>
QDataStream& operator>>(QDataStream& in, WindowAppUiView* pView)
{
	if (pView != nullptr)
	{
		// 反序列化UI中的控件
		pView->uiScene()->serialized(in, true);

		// 序列化Frame中的参数
		pView->m_parentFrame->serialized(in, true);
	}
	// Error
	else
	{
		vDebug() << "[Error] WindowAppUiView - operator>> failed, pView == nullptr";
	}

	return in;	
}


///// <summary>
///// 更新用户设定的尺寸
///// </summary>
///// <param name="nWidth"></param>
///// <param name="nHeight"></param>
//void WindowAppUiView::updateUiSize(int nWidth, int nHeight)
//{
//
//}
















///// <summary>
///// dll中的控件同步消息
///// </summary>
///// <param name=""></param>
///// <param name="msg"></param>
//void WindowAppUiView::controlSync(QWidget* pWidget, UI_SYNC_MSG msg)
//{
//	// 查找本窗体中是否有此控件
//	for (int i = 0; i < selectWidgets.count(); i++)
//	{
//		VControlObject* pControlObject = qobject_cast<VControlObject*>(selectWidgets.at(i)->getWidget());
//
//		if (pControlObject->m_pDllControl == pWidget)
//		{
//			
//
//			break;
//		}
//	}
//}


///// <summary>
///// 过滤子控件消息
///// </summary>
///// <param name=""></param>
///// <param name=""></param>
///// <returns></returns>
//bool WindowAppUiView::eventFilter(QObject* object, QEvent* event)
//{
//	if (object->objectName() == CLASS_NAME_LINEDIT)
//	{
//		if (event->type() == QEvent::Paint)
//		{
//			qDebug() << "WindowAppUiView::eventFilter - " << ((VLineEdit*)object)->getText();
//
//			// 向dll同步
//			g_pUiManager->syncToDll(object, UI_SYNC_MSG::EDIT_TEXT_CHANGED);
//		}
//	}
//
//	// qDebug() << object->objectName();
//
//	return QWidget::eventFilter(object, event);
//}