guidockcontext.cpp

这是一个串口监视程序

				pDockBar->ClientToScreen(&rect);
			}

			// dock it at the specified position, RecalcLayout will snap
			m_pDockSite->ReDockControlBar(m_pBar, pDockBar, &rect);
			m_pDockSite->RecalcLayout();
		}
	}
	else
	{
		CPoint ptFloat = m_ptMRUFloatPos;
		if (ptFloat.x < 0 || ptFloat.y < 0)
		{
			ptFloat = m_rectMRUDockPos.TopLeft();
			m_pBar->GetParent()->ClientToScreen(&ptFloat);
		}
		m_pDockSite->FloatControlBar(m_pBar, ptFloat, m_dwMRUFloatStyle);
	}
}

/////////////////////////////////////////////////////////////////////////////
// CGuiDockContext Operations

void CGuiDockContext::InitLoop()
{
	// handle pending WM_PAINT messages
	MSG msg;
	while (::PeekMessage(&msg, NULL, WM_PAINT, WM_PAINT, PM_NOREMOVE))
	{
		if (!GetMessage(&msg, NULL, WM_PAINT, WM_PAINT))
			return;
		DispatchMessage(&msg);
	}

	// get styles from bar
	m_dwDockStyle = m_pBar->m_dwDockStyle;
	m_dwStyle = m_pBar->m_dwStyle & CBRS_ALIGN_ANY;
	ASSERT(m_dwStyle != 0);

	// initialize state
	m_rectLast.SetRectEmpty();
	m_sizeLast.cx = m_sizeLast.cy = 0;
	m_bForceFrame = m_bFlip = m_bDitherLast = FALSE;

	// lock window update while dragging
	ASSERT(m_pDC == NULL);
	CWnd* pWnd = CWnd::GetDesktopWindow();
	if (pWnd->LockWindowUpdate())
		m_pDC = pWnd->GetDCEx(NULL, DCX_WINDOW|DCX_CACHE|DCX_LOCKWINDOWUPDATE);
	else
		m_pDC = pWnd->GetDCEx(NULL, DCX_WINDOW|DCX_CACHE);
	ASSERT(m_pDC != NULL);
}

void CGuiDockContext::CancelLoop()
{
	DrawFocusRect(TRUE);    // gets rid of focus rect
	ReleaseCapture();

	CWnd* pWnd = CWnd::GetDesktopWindow();
	pWnd->UnlockWindowUpdate();
	if (m_pDC != NULL)
	{
		pWnd->ReleaseDC(m_pDC);
		m_pDC = NULL;
	}
}

/////////////////////////////////////////////////////////////////////////////
// Implementation

void CGuiDockContext::DrawFocusRect(BOOL bRemoveRect)
{
	ASSERT(m_pDC != NULL);

	// default to thin frame
	CSize size(CX_BORDER, CY_BORDER);

	// determine new rect and size
	CRect rect;
	CBrush* pWhiteBrush = CBrush::FromHandle((HBRUSH)::GetStockObject(WHITE_BRUSH));
	CBrush* pDitherBrush = CDC::GetHalftoneBrush();
	CBrush* pBrush = pWhiteBrush;
	CBrush cb;
	if (HORZF(m_dwOverDockStyle))
		rect = m_rectDragHorz;
	else if (VERTF(m_dwOverDockStyle))
		rect = m_rectDragVert;
	else
	{
		// use thick frame instead
		size.cx = GetSystemMetrics(SM_CXFRAME) - CX_BORDER;
		size.cy = GetSystemMetrics(SM_CYFRAME) - CY_BORDER;
		if ((HORZF(m_dwStyle) && !m_bFlip) || (VERTF(m_dwStyle) && m_bFlip))
			rect = m_rectFrameDragHorz;
		else
			rect = m_rectFrameDragVert;
		pBrush = pDitherBrush;
	}
	if (bRemoveRect)
		size.cx = size.cy = 0;

/*	if (afxData.bWin4 &&
		(HORZF(m_dwOverDockStyle) || VERTF(m_dwOverDockStyle)))
	{
		// looks better one pixel in (makes the bar look pushed down)
		rect.InflateRect(-CX_BORDER, -CY_BORDER);
	}
*/
	// draw it and remember last size
	//rect.DeflateRect(2,2);

	if (bFirstClic==TRUE)
	{
		bFirstClic=FALSE;
	}
	else{
		if (bSecondClic==TRUE)
		{
		  m_pDC->DrawDragRect(&rect, size, &m_rectLast, m_sizeLast,
			pBrush, m_bDitherLast ? pDitherBrush : pWhiteBrush);
		  m_bDitherLast = (pBrush == pDitherBrush);
		   m_pDC->DrawDragRect(&rect, size, &m_rectLast, m_sizeLast,
			pBrush, m_bDitherLast ? pDitherBrush : pWhiteBrush);
		  bSecondClic=FALSE;
		}
		else
		{
			m_pDC->DrawDragRect(&rect, size, &m_rectLast, m_sizeLast,
			pBrush, m_bDitherLast ? pDitherBrush : pWhiteBrush);
			m_rectLast = rect;
			m_sizeLast = size;
			m_bDitherLast = (pBrush == pDitherBrush);
		}
	}


	//m_pDC->DrawDragRect(&rect, size, &m_rectLast, m_sizeLast/*,
	//	pBrush, m_bDitherLast ? pDitherBrush : pWhiteBrush*/);
/*	m_rectLast = rect;
	m_sizeLast = size;
	m_bDitherLast = (pBrush == pDitherBrush);*/
}

void CGuiDockContext::UpdateState(BOOL* pFlag, BOOL bNewValue)
{
	if (*pFlag != bNewValue)
	{
		*pFlag = bNewValue;
		m_bFlip = (HORZF(m_dwDockStyle) && VERTF(m_dwDockStyle) && m_bFlip); // shift key
		m_dwOverDockStyle = (m_bForceFrame) ? 0 : CanDock();
		DrawFocusRect();
	}
}

DWORD CGuiDockContext::CanDock()
{
	BOOL bStyleHorz;
	DWORD dwDock = 0; // Dock Canidate
	DWORD dwCurr = 0; // Current Orientation

	// let's check for something in our current orientation first
	// then if the shift key is not forcing our orientation then
	// check for horizontal or vertical orientations as long
	// as we are close enough
	ASSERT(m_dwStyle != 0);

	bStyleHorz = HORZF(m_dwStyle);
	bStyleHorz = m_bFlip ? !bStyleHorz : bStyleHorz;

	if (bStyleHorz && HORZF(m_dwDockStyle))
		dwDock = CanDock(m_rectDragHorz,
									  m_dwDockStyle & ~CBRS_ORIENT_VERT);
	else if (VERTF(m_dwDockStyle))
		dwDock = CanDock(m_rectDragVert,
									  m_dwDockStyle & ~CBRS_ORIENT_HORZ);

	if (!m_bFlip)
	{
		if (dwDock == 0 && HORZF(m_dwDockStyle))
		{
			dwCurr = CanDock(m_rectDragVert,
										  m_dwDockStyle & ~CBRS_ORIENT_VERT);
			dwDock = CanDock(m_rectDragHorz,
										  m_dwDockStyle & ~CBRS_ORIENT_VERT);
			dwDock = (dwDock == dwCurr) ? dwDock : 0;
		}
		if (dwDock == 0 && VERTF(m_dwDockStyle))
		{
			dwCurr = CanDock(m_rectDragHorz,
										  m_dwDockStyle & ~CBRS_ORIENT_HORZ);
			dwDock = CanDock(m_rectDragVert,
										  m_dwDockStyle & ~CBRS_ORIENT_HORZ);
			dwDock = (dwDock == dwCurr) ? dwDock : 0;
		}
	}

	return dwDock;
}

DWORD CGuiDockContext::CanDock(CRect rect, DWORD dwDockStyle, CDockBar** ppDockBar)
{
	// dwDockStyle -- allowable styles of bar
	// don't allow to dock to floating unless multi is specified
	BOOL bTipoToolBar=m_pBar->IsKindOf(RUNTIME_CLASS( CGuiToolBarWnd)) ||
		              m_pBar->IsKindOf(RUNTIME_CLASS( CMenuBar));
	dwDockStyle &= CBRS_ALIGN_ANY|CBRS_FLOAT_MULTI;
	if (ppDockBar != NULL)
		*ppDockBar = NULL;
	POSITION pos = m_pDockSite->m_listControlBars.GetHeadPosition();
	while (pos != NULL)
	{
		CDockBar* pDockBar = (CDockBar*)m_pDockSite->m_listControlBars.GetNext(pos);
		if (pDockBar->IsDockBar() && pDockBar->IsWindowVisible() &&
			(pDockBar->m_dwStyle & dwDockStyle & CBRS_ALIGN_ANY) &&
			(!pDockBar->m_bFloating ||
				(dwDockStyle & pDockBar->m_dwStyle & CBRS_FLOAT_MULTI)))
		{
		
				int nSize=pDockBar->m_arrBars.GetSize();
				for (int i=0;i <nSize;  i++)
				{
					UINT m_nDockBarID = pDockBar->GetDlgCtrlID();
					CControlBar* pBar;
					 pBar = (CControlBar*) pDockBar->m_arrBars[i];
					 if (HIWORD(pBar) == 0) continue; // placeholder
					 if (!pBar->IsVisible()) continue;
					 CRect rectBar;
					 pBar->GetWindowRect(&rectBar);
					 if (rectBar.Width() == 0)
						rectBar.right++;
					 if (rectBar.Height() == 0)
							rectBar.bottom++;
					 CRect rectBar1;
					 pDockBar->GetWindowRect(&rectBar1);
					 if (dwDockStyle==CBRS_ORIENT_VERT)
					 {
						 if (m_nDockBarID==AFX_IDW_DOCKBAR_LEFT)
					 		rectBar1.right=rectBar1.left+20;
						 if(m_nDockBarID==AFX_IDW_DOCKBAR_RIGHT)
							 rectBar1.left=rectBar1.right-20;
					 }
					 else
					 {

						if (m_nDockBarID==AFX_IDW_DOCKBAR_BOTTOM)
							rectBar1.top=rectBar1.bottom-20;
						if (m_nDockBarID==AFX_IDW_DOCKBAR_TOP)
							rectBar1.bottom=rectBar1.top+20;
						
					 }
					 if (rectBar1.IntersectRect(rectBar1, rect))
					 {
						if (ppDockBar != NULL)
							
							*ppDockBar = pDockBar;
						
						return pDockBar->m_dwStyle & dwDockStyle;
					 }
			

					//***********************************************
					if (rectBar.IntersectRect(rectBar, rect))
					{
							if (bTipoToolBar)
							{
								if (pBar->IsKindOf(RUNTIME_CLASS( CGuiControlBar)))
									return 0;
							}
							if (ppDockBar != NULL)
								*ppDockBar = pDockBar;
							return pDockBar->m_dwStyle & dwDockStyle;
							
						 
							
					}
					 
				}//fin del for
							
		
			CRect rectBar;
			pDockBar->GetWindowRect(&rectBar);
			if (rectBar.Width() == 0)
				rectBar.right++;
			if (rectBar.Height() == 0)
				rectBar.bottom++;
			if (rectBar.IntersectRect(rectBar, rect))
			{
				if (ppDockBar != NULL)
					*ppDockBar = pDockBar;
				return pDockBar->m_dwStyle & dwDockStyle;
			}
		}
	}
	return 0;
}

BOOL CGuiDockContext::Track()
{
	// don't handle if capture already set
	if (::GetCapture() != NULL)
		return FALSE;

	// set capture to the window which received this message
	m_pBar->SetCapture();
	ASSERT(m_pBar == CWnd::GetCapture());

	// get messages until capture lost or cancelled/accepted
	while (CWnd::GetCapture() == m_pBar)
	{
		MSG msg;
		if (!::GetMessage(&msg, NULL, 0, 0))
		{
			AfxPostQuitMessage(msg.wParam);
			break;
		}

		switch (msg.message)
		{
		case WM_LBUTTONUP:
			if (m_bDragging)
				EndDrag();
			else
				EndResize();
			return TRUE;
		case WM_MOUSEMOVE:
			if (m_bDragging)
				Move(msg.pt);
			else
				Stretch(msg.pt);
			break;
		case WM_KEYUP:
			if (m_bDragging)
				OnKey((int)msg.wParam, FALSE);
			break;
		case WM_KEYDOWN:
			if (m_bDragging)
				OnKey((int)msg.wParam, TRUE);
			if (msg.wParam == VK_ESCAPE)
			{
				CancelLoop();
				return FALSE;
			}
			break;
		case WM_RBUTTONDOWN:
			CancelLoop();
			return FALSE;

		// just dispatch rest of the messages
		default:
			DispatchMessage(&msg);
			break;
		}
	}

	CancelLoop();

	return FALSE;
}

CDockBar* CGuiDockContext::GetDockBar(DWORD dwOverDockStyle)
{
	DWORD dw = 0;
	CDockBar* pBar;
	if (HORZF(dwOverDockStyle))
	{
		dw = CanDock(m_rectDragHorz,
			dwOverDockStyle & ~CBRS_ORIENT_VERT, &pBar);
		ASSERT(dw != 0);
		ASSERT(pBar != NULL);
		return pBar;
	}
	if (VERTF(dwOverDockStyle))
	{
		dw =CanDock(m_rectDragVert,
			dwOverDockStyle & ~CBRS_ORIENT_HORZ, &pBar);
		ASSERT(dw != 0);
		ASSERT(pBar != NULL);
		return pBar;
	}
	return NULL;
}