roundbutton.cpp

最新的USB示波器源码?可直接编译生成可执行程序,需要硬件支持

	m_ptLeft.x = m_nRadius;
	m_ptRight.x = rect.right - m_nRadius - 1;

	// Set the window region so mouse clicks only activate the round section 
	// of the button
	m_rgn.DeleteObject(); 
	SetWindowRgn(NULL, FALSE);
	m_rgn.CreateEllipticRgnIndirect(rect);
	SetWindowRgn(m_rgn, TRUE);

	// Convert client coords to the parents client coords
	ClientToScreen(rect);
	CWnd* pParent = GetParent();
	if (pParent) pParent->ScreenToClient(rect);

	// Resize the window if it is not stretched
	if(!m_bStretch)	MoveWindow(rect.left, rect.top, rect.Width(), rect.Height(), TRUE);
}

void CRoundButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) 
{
	ASSERT(lpDrawItemStruct != NULL);
	
	CDC* pDC   = CDC::FromHandle(lpDrawItemStruct->hDC);
	CRect rect = lpDrawItemStruct->rcItem;
	UINT state = lpDrawItemStruct->itemState;
	UINT nStyle = GetStyle();
	int nRadius = m_nRadius;

	int nSavedDC = pDC->SaveDC();

	pDC->SelectStockObject(NULL_BRUSH);
	pDC->FillSolidRect(rect, ::GetSysColor(COLOR_BTNFACE));

	// Draw the focus circle around the button for non-stretched buttons
	if ((state & ODS_FOCUS) && m_bDrawDashedFocusCircle && !m_bStretch)
		DrawCircle(pDC, m_ptCentre, nRadius--, RGB(0,0,0));

	// Draw the raised/sunken edges of the button (unless flat)
	if (nStyle & BS_FLAT) {

		// for stretched buttons: draw left and right arcs and connect the with lines
		if(m_bStretch)//不是正方形
		{
			CPen* oldpen;
			
			CRect LeftBound(0,0,nRadius*2,nRadius*2);
			CRect RightBound(m_ptRight.x-nRadius,0,m_ptRight.x+nRadius,nRadius*2);

			oldpen = pDC->SelectObject(new CPen(PS_SOLID, 1, ::GetSysColor(COLOR_3DDKSHADOW)));
			pDC->Arc(LeftBound, CPoint(m_ptLeft.x,0), CPoint(m_ptLeft.x,nRadius*2));
			pDC->Arc(RightBound, CPoint(m_ptRight.x,nRadius*2), CPoint(m_ptRight.x,0));
			pDC->MoveTo(m_ptLeft.x,0); pDC->LineTo(m_ptRight.x,0);
			pDC->MoveTo(m_ptLeft.x,nRadius*2-1); pDC->LineTo(m_ptRight.x,nRadius*2-1);

			nRadius--;
			LeftBound.DeflateRect(1,1);
			RightBound.DeflateRect(1,1);

			delete pDC->SelectObject(new CPen(PS_SOLID, 1, ::GetSysColor(COLOR_3DHIGHLIGHT)));
			pDC->Arc(LeftBound, CPoint(m_ptLeft.x,1), CPoint(m_ptLeft.x,nRadius*2));
			pDC->Arc(RightBound, CPoint(m_ptRight.x,nRadius*2), CPoint(m_ptRight.x,0));
			pDC->MoveTo(m_ptLeft.x,1); pDC->LineTo(m_ptRight.x,1);
			pDC->MoveTo(m_ptLeft.x,nRadius*2); pDC->LineTo(m_ptRight.x,nRadius*2);

			delete pDC->SelectObject(oldpen);
		}

		// for non-stretched buttons: draw two circles
		else
		{
			DrawCircle(pDC, m_ptCentre, nRadius--, ::GetSysColor(COLOR_3DDKSHADOW));
			DrawCircle(pDC, m_ptCentre, nRadius--, ::GetSysColor(COLOR_3DHIGHLIGHT));
		}
	} else {
		if ((state & ODS_SELECTED))	{

			// draw the circular segments for stretched AND non-stretched buttons
			DrawCircleLeft(pDC, m_ptLeft, nRadius, 
					   ::GetSysColor(COLOR_3DDKSHADOW), ::GetSysColor(COLOR_3DHIGHLIGHT));
			DrawCircleRight(pDC, m_ptRight, nRadius, 
					   ::GetSysColor(COLOR_3DDKSHADOW), ::GetSysColor(COLOR_3DHIGHLIGHT));
			DrawCircleLeft(pDC, m_ptLeft, nRadius-1, 
					   ::GetSysColor(COLOR_3DSHADOW), ::GetSysColor(COLOR_3DLIGHT));
			DrawCircleRight(pDC, m_ptRight, nRadius-1, 
					   ::GetSysColor(COLOR_3DSHADOW), ::GetSysColor(COLOR_3DLIGHT));

			// draw connecting lines for stretched buttons only
			if (m_bStretch)
			{
				CPen* oldpen;
			//	CPen* mypen;

				oldpen = pDC->SelectObject(new CPen(PS_SOLID, 1, ::GetSysColor(COLOR_3DDKSHADOW)));
				pDC->MoveTo(m_ptLeft.x, 1); pDC->LineTo(m_ptRight.x, 1);

				delete pDC->SelectObject(new CPen(PS_SOLID, 1, ::GetSysColor(COLOR_3DSHADOW)));
				pDC->MoveTo(m_ptLeft.x, 2);	pDC->LineTo(m_ptRight.x, 2);

				delete pDC->SelectObject(new CPen(PS_SOLID, 1, ::GetSysColor(COLOR_3DLIGHT)));
				pDC->MoveTo(m_ptLeft.x, m_ptLeft.y + nRadius-1); pDC->LineTo(m_ptRight.x, m_ptLeft.y + nRadius-1);

				delete pDC->SelectObject(new CPen(PS_SOLID, 1, ::GetSysColor(COLOR_3DHIGHLIGHT)));
				pDC->MoveTo(m_ptLeft.x, m_ptLeft.y + nRadius); pDC->LineTo(m_ptRight.x, m_ptLeft.y + nRadius);

				delete pDC->SelectObject(oldpen);
			}
					   
		} else {

			// draw the circular segments for stretched AND non-stretched buttons
			DrawCircleLeft(pDC, m_ptLeft, nRadius, 
					   ::GetSysColor(COLOR_3DHIGHLIGHT), ::GetSysColor(COLOR_3DDKSHADOW));
			DrawCircleRight(pDC, m_ptRight, nRadius, 
					   ::GetSysColor(COLOR_3DHIGHLIGHT), ::GetSysColor(COLOR_3DDKSHADOW));
			DrawCircleLeft(pDC, m_ptLeft, nRadius - 1, 
					   ::GetSysColor(COLOR_3DLIGHT), ::GetSysColor(COLOR_3DSHADOW));
			DrawCircleRight(pDC, m_ptRight, nRadius - 1, 
					   ::GetSysColor(COLOR_3DLIGHT), ::GetSysColor(COLOR_3DSHADOW));

			// draw connecting lines for stretched buttons only
			if (m_bStretch)
			{
				CPen* oldpen;

				oldpen = pDC->SelectObject(new CPen(PS_SOLID, 1, pDC->GetPixel(m_ptLeft.x, 1)));
				pDC->MoveTo(m_ptLeft.x, 1); pDC->LineTo(m_ptRight.x, 1);

				delete pDC->SelectObject(new CPen(PS_SOLID, 1, pDC->GetPixel(m_ptLeft.x, 2)));
				pDC->MoveTo(m_ptLeft.x, 2); pDC->LineTo(m_ptRight.x, 2);

				delete pDC->SelectObject(new CPen(PS_SOLID, 1, pDC->GetPixel(m_ptLeft.x, m_ptLeft.y + nRadius)));
				pDC->MoveTo(m_ptLeft.x, m_ptLeft.y + nRadius); pDC->LineTo(m_ptRight.x, m_ptLeft.y + nRadius);

				delete pDC->SelectObject(new CPen(PS_SOLID, 1, pDC->GetPixel(m_ptLeft.x, m_ptLeft.y + nRadius - 1)));
				pDC->MoveTo(m_ptLeft.x, m_ptLeft.y + nRadius - 1); pDC->LineTo(m_ptRight.x, m_ptLeft.y + nRadius - 1);
				
				delete pDC->SelectObject(oldpen);
			}
		}
	}
	
	// draw the text if there is any
	if (hIcon)
	{CRect rImage;
	  rImage=rect;
	  rImage.left=(rect.Width()-hIcon_w)/2;
	  rImage.top=(rect.Height()-hIcon_h)/2;
	  if(state & ODS_SELECTED)
	  {	rImage.OffsetRect(1, 1);

	  }
	  //rImage.right=rImage.left+hIcon_w;
     // rImage.bottom=rImage.top+hIcon_h;
		pDC->DrawState(	rImage.TopLeft(),
					rImage.Size(), 
				    hIcon,
				    DSS_NORMAL, 
					(CBrush*)NULL);
	} // if




	CString strText;
	GetWindowText(strText);

	if (!strText.IsEmpty())
	{
		CRgn rgn;

		if (m_bStretch){
		rgn.CreateRectRgn(m_ptLeft.x-nRadius/2, m_ptCentre.y-nRadius, 
			m_ptRight.x+nRadius/2, m_ptCentre.y+nRadius);}

		else{
		rgn.CreateEllipticRgn(m_ptCentre.x-nRadius, m_ptCentre.y-nRadius, 
			m_ptCentre.x+nRadius, m_ptCentre.y+nRadius);}

		pDC->SelectClipRgn(&rgn);

		CSize Extent = pDC->GetTextExtent(strText);
		CPoint pt = CPoint( m_ptCentre.x - Extent.cx/2, m_ptCentre.y - Extent.cy/2 );

		if (state & ODS_SELECTED) pt.Offset(1,1);

		pDC->SetBkMode(TRANSPARENT);

		if (state & ODS_DISABLED)
			pDC->DrawState(pt, Extent, strText, DSS_DISABLED, TRUE, 0, (HBRUSH)NULL);
		else
		{
			// changed this code to give the text a 3d-look
			COLORREF oldcol = pDC->SetTextColor(::GetSysColor(COLOR_3DHIGHLIGHT));
			pDC->TextOut(pt.x, pt.y, strText);
			pDC->SetTextColor(textColor); //::GetSysColor(COLOR_3DDKSHADOW)
			pDC->TextOut(pt.x-1, pt.y-1, strText);
			pDC->SetTextColor(oldcol);
		}

		pDC->SelectClipRgn(NULL);
		rgn.DeleteObject();
	}

	// Draw the focus circle on the inside of the button if it is non-stretched
	if ((state & ODS_FOCUS) && m_bDrawDashedFocusCircle && !m_bStretch)
		DrawCircle(pDC, m_ptCentre, nRadius-2, RGB(0,0,0), TRUE);

	pDC->RestoreDC(nSavedDC);
}

DWORD CRoundButton::SetIcon(int nIconIn)
{
	HICON		hIconIn			= NULL;
	HINSTANCE	hInstResource	= NULL;
   	BOOL		bRetValue;
	ICONINFO	ii;
	// Find correct resource handle
	hInstResource = AfxFindResourceHandle(MAKEINTRESOURCE(nIconIn), RT_GROUP_ICON);

	// Set icon when the mouse is IN the button
	hIconIn = (HICON)::LoadImage(hInstResource, MAKEINTRESOURCE(nIconIn), IMAGE_ICON, 0, 0, 0);
	if (hIcon)
		::DestroyIcon(hIcon);
	hIcon=hIconIn;
	::ZeroMemory(&ii, sizeof(ICONINFO));
		bRetValue = ::GetIconInfo(hIconIn, &ii);
		if (bRetValue == FALSE)
		{
		
			return false;
		} 

		hIcon_w	= (DWORD)(ii.xHotspot * 2);
		hIcon_h	= (DWORD)(ii.yHotspot * 2);
	    ::DeleteObject(ii.hbmMask);
		::DeleteObject(ii.hbmColor);

	Invalidate();
	return true;
}

void CRoundButton::DrawTheIcon(CDC *pDC, BOOL bHasTitle, RECT *rpItem, CRect *rpTitle, BOOL bIsPressed, BOOL bIsDisabled)
{/*
BYTE		byIndex		= 0;

	// Select the icon to use
	if ((m_bIsCheckBox && bIsPressed) || (!m_bIsCheckBox && (bIsPressed || m_bMouseOnButton)))
		byIndex = 0;
	else
		byIndex = (m_csIcons[1].hIcon == NULL ? 0 : 1);

	CRect	rImage;
	//PrepareImageRect(bHasTitle, rpItem, rpTitle, bIsPressed, m_csIcons[byIndex].dwWidth, m_csIcons[byIndex].dwHeight, &rImage);

	// Ole'!
	pDC->DrawState(	rImage.TopLeft(),
					rImage.Size(), 
				    hIcon,
					(bIsDisabled ? DSS_DISABLED : DSS_NORMAL), 
					(CBrush*)NULL);*/
}

void CRoundButton::SetTextColor(COLORREF color)
{
textColor=color;
	Invalidate();
}