flowunit.h

一个工业控制管道流动控件,能够反映管道内流动情况.不是我写的,但觉得不错,因此转载上来

/***********************************************************************
* Copyright (c) 2007* All rights reserved.* 
* ATTRIBUTE:        流动的小滑块单元
* FILE NAME:		FlowUnit.h
* FILE ID:			SYSTEMCTRL-FLOWUNIT-H
* CURRENT VERSION:	V1.0
* AUTHOR:			戚高
* CONTECT:			[e-mail]	
* BUILD DATA:		27/12/2007
* COMPLETION DATE:	27/12/2007
* NOTE:	            This source code can be used freely but without guarantee. 
					You are respon responsible for using the following codes
***********************************************************************/
#ifndef __FLOWUNIT_H__
#define __FLOWUNIT_H__

class CFlowImpl;

#define _D_LINE_H(x, y, colorBack)     \
{									   \
	pDC->SetPixelV(x    , y - 2, colorBack); \
	pDC->SetPixelV(x + 1, y - 2, colorBack); \
	pDC->SetPixelV(x + 4, y - 2, colorBack); \
	pDC->SetPixelV(x + 5, y - 2, colorBack); \
}

#define _D_LINE_V(x, y, colorBack)	   \
{									   \
	pDC->SetPixelV(x - 2, y    , colorBack); \
	pDC->SetPixelV(x - 2, y + 1, colorBack); \
	pDC->SetPixelV(x - 2, y + 4, colorBack); \
	pDC->SetPixelV(x - 2, y + 5, colorBack); \
}

class CFlowUnit 
{
public:
	CFlowUnit();
	virtual ~CFlowUnit();

	void Draw(CDC *pDC, CRect &rcClient);	
	void SetParentWnd(CFlowImpl *pParentWnd);

	inline CRect GetRect() const 
	{ 
		return m_rectClient;
	}

	inline void SetRect(const CRect &rcClient) 
	{ 
		m_rectClient = rcClient; 
	} 	
	
private:
	void DrawDLine(CDC *pDC, CPoint ptCenter);
	void DrawTriangle(CDC *pDC);

private:
	CRect		 m_rectClient;	
	CFlowImpl   *m_pParentWnd;

};

#endif