#include "WindowAppBlockPortOld.h"
#include "WindowAppItemInterface.h"
#include "WindowAppPouManager.h"

extern WindowAppPouManager	pouManager;

WindowAppBlockPortOld::WindowAppBlockPortOld(const TOOL_EX* pTool, QGraphicsItem* parent)
	: QGraphicsTextItem(parent)
{
	setFlag(QGraphicsItem::ItemIsMovable);
	setFlag(QGraphicsItem::ItemIsSelectable);
	setFlag(QGraphicsItem::ItemSendsGeometryChanges);

	toolInfo = pTool;

	editAction = new QAction(tr("&Edit Value"), this);
	editAction->setStatusTip(tr("Edit value"));
	connect(editAction, &QAction::triggered, this, &WindowAppBlockPortOld::onMenuEdit);

	setFont(FONT_PBD);
	setTextInteractionFlags(Qt::TextEditorInteraction);
	setDefaultTextColor(COLOR_TEXT);

	UpdateRect();
}

/////////////////////////////////////////////////////////
//	返回功能块图形的总体矩形区域
QRectF WindowAppBlockPortOld::boundingRect() const
{
	return blockBoundingRect;
}


///////////////////////////////////////////////////
// 根据用户的输入实时更新矩形区域的尺寸
void WindowAppBlockPortOld::UpdateRect()
{
	// 计算高度
	int blockHeight = PBD_BASIC_HEIGHT;

	// 计算宽度
	int blocWidth = PBD_BASIC_WIDTH;

	// TODO : 根据工具名字字符的宽度计算实际需要的宽度

	// 主体矩形区域
	blockRect.setRect(
		0,
		0,
		blocWidth,
		blockHeight
	);

	// 序号矩形区域
	blockIndexRect.setRect(
		blockRect.right() - TBD_INDEX_WIDTH,
		blockRect.top() - TBD_INDEX_HEIGHT / 2,
		TBD_INDEX_WIDTH,
		TBD_INDEX_HEIGHT
	);

	//// 总体矩形边界（双接口）
	//blockBoundingRect.setRect(
	//	blockRect.left() - TBD_INF_LINE,
	//	blockRect.top() - TBD_INDEX_HEIGHT / 2,
	//	blockRect.width() + TBD_INF_LINE + TBD_INF_LINE,
	//	blockRect.height() + TBD_INDEX_HEIGHT + TBD_SHADOW_COUNT * PEN_LINE_WIDTH
	//);

	//// 总体矩形边界（单接口）
	//blockBoundingRect.setRect(
	//	blockRect.left(),
	//	blockRect.top() - TBD_INDEX_HEIGHT / 2,
	//	blockRect.width() + TBD_INF_LINE,
	//	blockRect.height() + TBD_INDEX_HEIGHT + TBD_SHADOW_COUNT * PEN_LINE_WIDTH
	//);

	// 总体矩形边界（未计算Interface的范围）
	blockBoundingRect.setRect(
		blockRect.left(),
		blockRect.top() - TBD_INDEX_HEIGHT / 2,
		blockRect.width() + TBD_SHADOW_COUNT * PEN_LINE_WIDTH,
		blockRect.height() + TBD_INDEX_HEIGHT / 2 + TBD_SHADOW_COUNT * PEN_LINE_WIDTH
	);
}

void WindowAppBlockPortOld::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
{
	//if (option->state & QStyle::State_Selected)
	//{
	//	isSelected = true;
	//}
	//else
	//{
	//	isSelected = false;
	//}

	bSel = isSelected();

	Q_UNUSED(widget);


	painter->save();

	//// 每次绘制之前都更新一下矩形区域
	//UpdateRect();

	// 绘制外框
	DrawBlock(painter);

	// 绘制阴影
	DrawBlockShadow(painter);

	// 绘制序号
	DrawIndex(painter);

	//// 绘制接口
	//DrawInterface(painter);

	painter->restore();


	QGraphicsTextItem::paint(painter, option, widget);
}


///////////////////////////////////////////////////////
// 显示右键菜单
void WindowAppBlockPortOld::contextMenuEvent(QGraphicsSceneContextMenuEvent* event)
{
	scene()->clearSelection();
	setSelected(true);

	//blockMenu->exec(event->screenPos());
}


/// <summary>
/// 获得焦点时
/// </summary>
/// <param name="event"></param>
void WindowAppBlockPortOld::focusInEvent(QFocusEvent* event)
{
	if (event->reason() != Qt::PopupFocusReason) 
	{
		// 保存原始文本
		// 注意右键菜单再次进入焦点时不保存原始文本
		m_strInput = toPlainText();
	}

	QGraphicsTextItem::focusInEvent(event);
}


/// <summary>
/// 焦点移除时
/// </summary>
/// <param name="event"></param>
void WindowAppBlockPortOld::focusOutEvent(QFocusEvent* event)
{
	// 右键点击其他地方失去焦点，定义为取消操作
	if (event->reason() == Qt::MouseFocusReason && QApplication::mouseButtons() == Qt::RightButton) 
	{		
		// 恢复原始文本
		setPlainText(m_strInput);
		// 恢复不能编辑状态
		setTextInteractionFlags(Qt::NoTextInteraction);
	}
	//右键弹出菜单时不做处理
	else if (event->reason() == Qt::PopupFocusReason) 
	{

	}
	// 其他情况，例如键盘输入回车等，表示编辑成功，发送信号给父对象
	else 
	{
		setTextInteractionFlags(Qt::NoTextInteraction);

		// TODO：本信号暂未用到
		emit inputOverSignal(toPlainText());
	}

	QGraphicsTextItem::focusOutEvent(event);
}


/// <summary>
/// 鼠标双击时进入可编辑状态并打开焦点
/// </summary>
/// <param name="event"></param>
void WindowAppBlockPortOld::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event)
{
	if (event->button() == Qt::LeftButton) 
	{
		setTextInteractionFlags(Qt::TextEditorInteraction);
		setFocus();
		QGraphicsTextItem::mouseDoubleClickEvent(event);
	}
}


/// <summary>
/// 鼠标单击时
/// </summary>
/// <param name="event"></param>
void WindowAppBlockPortOld::mousePressEvent(QGraphicsSceneMouseEvent* event)
{
	// 左键点击是可编辑状态的话响应单击事件
	if (event->button() == Qt::LeftButton) 
	{		
		// 是不可编辑状态的话，也就是未双击进入编辑状态时不响应，一遍产生双击事件
		if (textInteractionFlags() != Qt::NoTextInteraction) 
		{
			QGraphicsTextItem::mousePressEvent(event);
		}

		//return;
	}
	QGraphicsTextItem::mousePressEvent(event);
}


/// <summary>
/// 键盘按下时
/// </summary>
/// <param name="event"></param>
void WindowAppBlockPortOld::keyPressEvent(QKeyEvent* event) 
{
	// 点击回车失去焦点，编辑完成，后续给FocusOutEvent处理
	if (event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter)
	{		
		clearFocus();

		return;
	}

	QGraphicsTextItem::keyPressEvent(event);
}


/// <summary>
/// 添加接口
/// </summary>
void WindowAppBlockPortOld::addItemInterfaces()
{
	// 为本Block添加新的ItemInterface
	for (TOOL_INTERFACE_EX* pInf : qAsConst(toolInfo->Interfaces))
	{
		WindowAppItemInterface* pNewItemInf = new WindowAppItemInterface(pInf, this);

		//// 输入接口(Port类型基本没有输入接口，所以此处应该不会执行)
		//if (pInf->infDirection == INF_DIRECTION::INF_IN)
		//{
		//	pNewItemInf->bInfOut = false;
		//}

		pouManager.AddRunningInterface(pNewItemInf, pInf);

		// 保存接口Item信息
		itemInterfaces.append(pNewItemInf);

		// 界面中添加此Interface(设置为从属关系之后，都不需要手工添加此Item了，真是方便啊)
		// scene()->addItem(pNewItemInf);
	}

	// 更新Interface的位置(注意此处坐标系需要转换一下)
	QPointF pt = mapToScene(0, 0);
	QRectF rcBlock = blockRect;
	rcBlock.translate(pt);
	__super::updateAllInterfacesPostion(rcBlock);
}


/// <summary>
/// 功能块移动时，通知对应的Interface同步移动
/// </summary>
/// <param name="change"></param>
/// <param name="value"></param>
/// <returns></returns>
QVariant WindowAppBlockPortOld::itemChange(GraphicsItemChange change, const QVariant& value)
{
	if (change == QGraphicsItem::ItemSelectedHasChanged)
	{
		emit selectedChange(this);
	}		
	else if (change == QGraphicsItem::ItemPositionChange)
	{
		// 更新Interface的位置（此处Qt自动处理了，不需要额外处理）
		// __super::updateAllInterfacesPostion(blockRect, true);

		emit blockMoveSignal(this);
	}
	else if (change == QGraphicsItem::ItemSelectedChange)
	{
		// 如果选中状态变更的话，就重绘所有的Interface
		__super::redrawAllInterface();
	}

	return value;
}

///////////////////////////////////////////////////////////////////
// 菜单 - Edit
void WindowAppBlockPortOld::onMenuEdit()
{
	QMessageBox::information(nullptr, "Vision Plus", "onMenuEdit");

	//// 获取当前选中的Block
	//QGraphicsItem* activeBlock = this->selectedItems().first();

	//pouManager.ToolExecuteSub(activeBlock);
}