myroundsliderctrl2.cpp

VCsuishu fudai de yixie chengxuyuanma

			strValue.Format("%1.2f",(m_nDivNum - i)*m_dPlusValue);
			pointerTextSize = m_memDC.GetTextExtent(strValue);	
			
			if(i==0){//右边
				pointerTextPoint = CPoint(m_centerPoint.x+(int)((m_nSmallRadius+6)*cos((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)),
				m_centerPoint.y-(int)((m_nSmallRadius+6)*sin((m_nMinAngle+m_nAngleDiv*i)*pi/180.0))- pointerTextSize.cy/2);
				//strValue.Format("%.2f",(m_nDivNum - i)*m_dPlusValue);
				//输出字
				m_memDC.TextOut(pointerTextPoint.x,pointerTextPoint.y,strValue);
			}
			else{if(i==m_nDivNum){//左边
				pointerTextPoint = CPoint(m_centerPoint.x+(int)((m_nSmallRadius+6)*cos((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)) - pointerTextSize.cx,
				m_centerPoint.y-(int)((m_nSmallRadius+6)*sin((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)) - pointerTextSize.cy/2);
				//输出字
				m_memDC.TextOut(pointerTextPoint.x,pointerTextPoint.y,strValue);
				}
				else{if(i==m_nDivNum/2){//正上边
					pointerTextPoint = CPoint(m_centerPoint.x+(int)((m_nSmallRadius+6)*cos((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)) - pointerTextSize.cx/2,
					m_centerPoint.y-(int)((m_nSmallRadius+6)*sin((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)) - pointerTextSize.cy);
					//输出字
					m_memDC.TextOut(pointerTextPoint.x,pointerTextPoint.y,strValue);
					}
				else{}
				}
			}
		//	strValue.Format("%.2f",(m_nDivNum - i)*m_dPlusValue);
		//	m_memDC.TextOut(pointerTextPoint.x,pointerTextPoint.y,strValue);
		}
	}
	else{
		for(int i=0; i<=m_nDivNum; i++){
			if(i%10 == 0){//长刻度
				m_memDC.MoveTo(m_centerPoint.x+(int)((m_nSmallRadius)*cos((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)),
					m_centerPoint.y-(int)((m_nSmallRadius)*sin((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)));
				m_memDC.LineTo(m_centerPoint.x+(int)((m_nSmallRadius+8)*cos((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)),
					m_centerPoint.y-(int)((m_nSmallRadius+8)*sin((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)));
				//处理长刻度指示值字***			
				//
				strValue.Format("%.2f",(m_nDivNum - i)*m_dPlusValue);
				pointerTextSize = m_memDC.GetTextExtent(strValue);				
				if(i<(m_nDivNum/2)){//右边
					pointerTextPoint = CPoint(m_centerPoint.x+(int)((m_nSmallRadius+8)*cos((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)),
					m_centerPoint.y-(int)((m_nSmallRadius+8)*sin((m_nMinAngle+m_nAngleDiv*i)*pi/180.0))- pointerTextSize.cy/2);
				}
				else{if(i>(m_nDivNum/2)){//左边
						pointerTextPoint = CPoint(m_centerPoint.x+(int)((m_nSmallRadius+8)*cos((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)) - pointerTextSize.cx,
						m_centerPoint.y-(int)((m_nSmallRadius+8)*sin((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)) - pointerTextSize.cy/2);
					}
					else{//正上边
						pointerTextPoint = CPoint(m_centerPoint.x+(int)((m_nSmallRadius+8)*cos((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)) - pointerTextSize.cx/2,
						m_centerPoint.y-(int)((m_nSmallRadius+8)*sin((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)) - pointerTextSize.cy);
					}
				}
				m_memDC.TextOut(pointerTextPoint.x,pointerTextPoint.y,strValue);
				}
			else{//画小刻度
				m_memDC.MoveTo(m_centerPoint.x+(int)(m_nSmallRadius*cos((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)),
					m_centerPoint.y-(int)(m_nSmallRadius*sin((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)));
				m_memDC.LineTo(m_centerPoint.x+(int)((m_nSmallRadius+4)*cos((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)),
					m_centerPoint.y-(int)((m_nSmallRadius+4)*sin((m_nMinAngle+m_nAngleDiv*i)*pi/180.0)));
			}		
		}
	}
	//善后处理 选出字体和笔，删除字体以释放内存
	m_memDC.SelectObject(pOldFont);
	font.DeleteObject();
	m_memDC.SelectObject(pOldPen);

	//处理指针****
	//准备笔刷
	CBrush pointerBrush(m_pointerClr);
	//获得位置---位置的处理放在OnLButtonDow，OnLButtonUp,OnMouseMove里
	//计算指针圆心
	m_pointerCenterPoint = CPoint(
			m_centerPoint.x+(int)((double)(m_nSmallRadius-m_nPointerRadius*2)*cos((m_nCurrentAngle)*pi/180.0)),
			m_centerPoint.y-(int)((double)(m_nSmallRadius-m_nPointerRadius*2)*sin((m_nCurrentAngle)*pi/180.0))
			);
	///*//填充指针颜色
	CRgn pointerRgn;
	pointerRgn.CreateEllipticRgn(
			m_pointerCenterPoint.x - m_nPointerRadius,
			m_pointerCenterPoint.y - m_nPointerRadius,
			m_pointerCenterPoint.x + m_nPointerRadius+2,
			m_pointerCenterPoint.y + m_nPointerRadius+2
			);
	m_memDC.FillRgn(&pointerRgn,&pointerBrush);
	//*/
	//画指针边框（凹陷状）
	DrawCircle(&m_memDC, m_pointerCenterPoint, m_nPointerRadius, 
		::GetSysColor(COLOR_3DDKSHADOW), ::GetSysColor(COLOR_3DHIGHLIGHT));
//	DrawCircle(&dc,currentCenterPoint, m_nPointerRadius,
//		 ::GetSysColor(COLOR_3DSHADOW),::GetSysColor(COLOR_3DLIGHT));
	//输出当前值
	strValue.Format("%.2f",m_dCurrentValue);
	CSize textSize = m_memDC.GetTextExtent(strValue);
	CPoint textPoint(m_centerPoint.x - textSize.cx/2,
		m_centerPoint.y - textSize.cy/2);
	m_memDC.SetBkMode(OPAQUE);
	m_memDC.SetBkColor(RGB(0,0,0));
	m_memDC.SetTextColor(m_textClr);
	m_memDC.TextOut(textPoint.x, textPoint.y, strValue);
	//贴出图
	dc.BitBlt(m_clientRect.left, m_clientRect.top, 
		m_clientRect.Width(), m_clientRect.Height(), 
		&m_memDC, m_clientRect.left, m_clientRect.top,
		SRCCOPY );
	//
//try

	// Do not call CSliderCtrl::OnPaint() for painting messages
}

void CMyRoundSliderCtrl2::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	m_bLButtonDown = TRUE;
	SetCapture();
	//
	CSliderCtrl::OnLButtonDown(nFlags, point);
}
/////*******处理单击右键做递增**************
void CMyRoundSliderCtrl2::OnRButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	CRect smallRect(m_centerPoint.x-m_nSmallRadius,
			m_centerPoint.y-m_nSmallRadius,
			m_centerPoint.x+m_nSmallRadius,
			m_centerPoint.y+m_nSmallRadius);
	m_rgn.DeleteObject();
	m_rgn.CreateEllipticRgnIndirect(&smallRect);
	if(m_rgn.PtInRegion(point)){	
		//因为往右走，角度增大，实际值却减少
		if((m_nCurrentAngle > m_nMinAngle)&&
				(m_dCurrentValue < m_dMaxValue))
		{
			m_nCurrentAngle -= m_nAngleDiv;			
			m_dCurrentValue += m_dPlusValue;
			//迫使重画按钮（发出WM_PAINT）
			RedrawWindow();	
			//
			HWND pHwnd;
			pHwnd = GetParent()->GetSafeHwnd();
			::PostMessage(pHwnd,WM_CHANGEVALUE,GetDlgCtrlID(),m_dCurrentValue);
		}	
	//	m_dCurrentValue = (double)(m_nCurrentAngle/(m_nMaxAngle - m_nMinAngle))*(m_dMaxValue - m_dMinValue);
	}
	//
	CSliderCtrl::OnRButtonDown(nFlags, point);
}
//////****消除屏幕闪烁(就是使其不画屏前不清屏)***********
BOOL CMyRoundSliderCtrl2::OnEraseBkgnd(CDC* pDC) 
{
	// TODO: Add your message handler code here and/or call default
	//	return CSliderCtrl::OnEraseBkgnd(pDC);//屏蔽掉
	return TRUE;//必定要这样用，否则屏幕闪烁厉害
}
///******处理鼠标带动指针动起来*********
void CMyRoundSliderCtrl2::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if(m_bLButtonDown)//仅当左键一直按下才需要处理这个函数
	{
		m_bMouseMove = TRUE;
		HRGN smallRgn;
		HRGN largeRgn;
		int nRangeAngle;
		nRangeAngle = 80;
		//ScreenToClient(&point);		
		CClientDC dc(this);
		//try means3
		CPoint largePoint(//角度小之圆狐点	
			m_centerPoint.x+(int)((double)(m_nSmallRadius-m_nPointerRadius*2)*cos((m_nCurrentAngle-nRangeAngle)*pi/180.0)),
			m_centerPoint.y-(int)((double)(m_nSmallRadius-m_nPointerRadius*2)*sin((m_nCurrentAngle-nRangeAngle)*pi/180.0))
			);
		CPoint smallPoint(//角度大之圆狐点
			m_centerPoint.x+(int)((double)(m_nSmallRadius-m_nPointerRadius*2)*cos((m_nCurrentAngle+nRangeAngle)*pi/180.0)),
			m_centerPoint.y-(int)((double)(m_nSmallRadius-m_nPointerRadius*2)*sin((m_nCurrentAngle+nRangeAngle)*pi/180.0))
			);
		CPoint mediumPoint(//弦之中点
			(largePoint.x + smallPoint.x)/2,
			(largePoint.y + smallPoint.y)/2);
		//开始记录窗体轮廓路径**largeRgn
		
		dc.BeginPath();	

		dc.MoveTo(largePoint);
		dc.LineTo(mediumPoint);
		//dc.MoveTo(mediumPoint);//不能有MOVETO
		dc.LineTo(m_pointerCenterPoint);
		//dc.MoveTo(m_pointerCenterPoint);
		dc.AngleArc(m_centerPoint.x,m_centerPoint.y,
						(m_nSmallRadius-m_nPointerRadius*2),
						m_nCurrentAngle,-nRangeAngle
						);
		//dc.LineTo(largePoint);
		//结束记录窗体轮廓路径
		dc.EndPath();
		//把所记录的路径转化为窗体轮廓句柄
		largeRgn = ::PathToRegion(dc);
		//开始记录窗体轮廓路径**smallRgn--60度弦
		
		dc.BeginPath();	

		dc.MoveTo(smallPoint);
		dc.LineTo(mediumPoint);
		//dc.MoveTo(mediumPoint);//不能有MOVETO
		dc.LineTo(m_pointerCenterPoint);
		//dc.MoveTo(m_pointerCenterPoint);
		dc.AngleArc(m_centerPoint.x,m_centerPoint.y,
						(m_nSmallRadius-m_nPointerRadius*2),
						m_nCurrentAngle,nRangeAngle
						);
		//dc.LineTo(largePoint);
		//结束记录窗体轮廓路径
		dc.EndPath();
		//把所记录的路径转化为窗体轮廓句柄
		smallRgn = ::PathToRegion(dc);
		//判断****
		//顺时针（即向右转）
		if((CRgn::FromHandle(largeRgn))->PtInRegion(point))
		{
			//因为往右走，角度增大，实际值却减少
			if((m_nCurrentAngle > m_nMinAngle)&&
					(m_dCurrentValue < m_dMaxValue))
			{
				m_nCurrentAngle -= m_nAngleDiv;
				m_dCurrentValue += m_dPlusValue;
				RedrawWindow();//迫使重画按钮（发出WM_PAINT）
				//
				HWND pHwnd;
				pHwnd = GetParent()->GetSafeHwnd();
				::PostMessage(pHwnd,WM_CHANGEVALUE,GetDlgCtrlID(),m_dCurrentValue);
			}
		}
		//逆时针（即向右转）
		if((CRgn::FromHandle(smallRgn))->PtInRegion(point))		
		{
			//因为往左走，角度减少，实际值却增大
			if((m_nCurrentAngle < m_nMaxAngle) && (m_dCurrentValue > m_dMinValue))
			{
				m_nCurrentAngle += m_nAngleDiv;
				m_dCurrentValue -= m_dPlusValue;
				RedrawWindow();//迫使重画按钮（发出WM_PAINT）
				//
				HWND pHwnd;
				pHwnd = GetParent()->GetSafeHwnd();
				::PostMessage(pHwnd,WM_CHANGEVALUE,GetDlgCtrlID(),m_dCurrentValue);
			}
		}		
	}
	//
//	CSliderCtrl::OnMouseMove(nFlags, point);
}
/////*******处理单击左键做递减**************
void CMyRoundSliderCtrl2::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	//
	ReleaseCapture();
	//
	m_bLButtonDown = FALSE;
	//
	if(!m_bMouseMove){
		CRect smallRect(m_centerPoint.x-m_nSmallRadius,
			m_centerPoint.y-m_nSmallRadius,
			m_centerPoint.x+m_nSmallRadius,
			m_centerPoint.y+m_nSmallRadius);
		m_rgn.DeleteObject();
		m_rgn.CreateEllipticRgnIndirect(&smallRect);
		if(m_rgn.PtInRegion(point)){
		//因为往左走，角度减少，实际值却增大
			if((m_nCurrentAngle < m_nMaxAngle) && (m_dCurrentValue > m_dMinValue)){
				m_nCurrentAngle += m_nAngleDiv;
				m_dCurrentValue -= m_dPlusValue;
				//迫使重画按钮（发出WM_PAINT）
				RedrawWindow();
				//
				HWND pHwnd;
				pHwnd = GetParent()->GetSafeHwnd();
				::PostMessage(pHwnd,WM_CHANGEVALUE,GetDlgCtrlID(),m_dCurrentValue);
			}
		}
	}
	//
	m_bMouseMove = FALSE;	
	//
	CSliderCtrl::OnLButtonUp(nFlags, point);
}
//返回当前的数据值
double CMyRoundSliderCtrl2::GetCurrentValue()
{
	return m_dCurrentValue;
}

void CMyRoundSliderCtrl2::SetCurrentValue(double dCurrentValue)
{
	m_dCurrentValue = dCurrentValue;
	m_nCurrentAngle = m_nMaxAngle - 
		(m_dCurrentValue/(m_dMaxValue-m_dMinValue))*
		(m_nMaxAngle-m_nMinAngle);
	RedrawWindow();//迫使重画按钮（发出WM_PAINT）
}

void CMyRoundSliderCtrl2::SetMaxValue(double dMaxValue)
{
	m_dMaxValue = dMaxValue;
	//初始化m_dCurrentValue，m_nDivNum，m_nAngleDiv，m_nCurrentAngle
	Init();
}

void CMyRoundSliderCtrl2::SetMinValue(double dMinValue)
{
	m_dMinValue = dMinValue;
	//初始化m_dCurrentValue，m_nDivNum，m_nAngleDiv，m_nCurrentAngle
	Init();
}

void CMyRoundSliderCtrl2::SetMaxAngle(int nMaxAngle)
{
	m_nMaxAngle = nMaxAngle;
	//初始化m_dCurrentValue，m_nDivNum，m_nAngleDiv，m_nCurrentAngle
	Init();
}


void CMyRoundSliderCtrl2::SetMinAngle(int nMinAngle)
{
	m_nMinAngle = nMinAngle;
	//初始化m_dCurrentValue，m_nDivNum，m_nAngleDiv，m_nCurrentAngle
	Init();
}

void CMyRoundSliderCtrl2::SetPlusValue(double dPlusValue)
{
	m_dPlusValue = dPlusValue;
	//初始化m_dCurrentValue，m_nDivNum，m_nAngleDiv，m_nCurrentAngle
	Init();
}


void CMyRoundSliderCtrl2::SetScaleTextColor(COLORREF ScaleTextClr)
{
	m_scaleTextClr = ScaleTextClr;
}

void CMyRoundSliderCtrl2::SetTextColor(COLORREF textClr)
{
	m_textClr = textClr;
}

void CMyRoundSliderCtrl2::SetBkClr(COLORREF bkClr)
{
	m_bkClr = bkClr;
}

void CMyRoundSliderCtrl2::SetScaleColor(COLORREF scaleClr)
{
	m_scaleClr = scaleClr;
}

void CMyRoundSliderCtrl2::SetPointerColor(COLORREF pointerClr)
{
	m_pointerClr = pointerClr;
}

void CMyRoundSliderCtrl2::OnSize(UINT nType, int cx, int cy) 
{
	CSliderCtrl::OnSize(nType, cx, cy);
	
	GetClientRect(&m_clientRect);
	//
	ChangeSize();
	// TODO: Add your message handler code here
	
}