drawobj.cpp

windows2000下PCI板卡虚拟驱动编程源程序例子

	{
		WORD wTemp;
		ar >> wTemp; m_nShape = (Shape)wTemp;
		ar >> m_roundness;
	}
}

/**/
void CDrawRect::DrawCircle(CDC* pDC,CRect rect)
{
	ASSERT_VALID(this);

	int cx,cy;
	if (rect.right < rect.left)
		{
			cx = rect.left;
			rect.left = rect.right;
			rect.right = cx;
		}
	if (rect.bottom < rect.top)
		{
			cy = rect.top;
			rect.top = rect.bottom;
			rect.bottom = cy;
		}
	cx = rect.right - rect.left;
    cy = rect.bottom - rect.top;
	if (cx > cy)
		{
			rect.left += (cx-cy) / 2;
			rect.right = rect.left + cy;
		}
	else
		{
            rect.top += (cy-cx) / 2;
			rect.bottom = rect.top + cx;
		}
	//pDC->TextOut(rect.left,rect.bottom,"123",3);
	pDC->Ellipse(rect);
}
/**/

void CDrawRect::Draw(CDC* pDC)
{
	ASSERT_VALID(this);

	CBrush brush;
	if (!brush.CreateBrushIndirect(&m_logbrush))
		return;
	CPen pen;
	if (!pen.CreatePenIndirect(&m_logpen))
		return;

	CBrush* pOldBrush;
	CPen* pOldPen;

	if (m_bBrush)
		pOldBrush = pDC->SelectObject(&brush);
	else
		pOldBrush = (CBrush*)pDC->SelectStockObject(NULL_BRUSH);

	if (m_bPen)
		pOldPen = pDC->SelectObject(&pen);
	else
		pOldPen = (CPen*)pDC->SelectStockObject(NULL_PEN);

	CRect rect = m_position;
	switch (m_nShape)
	{
	case rectangle:
		pDC->Rectangle(rect);
		break;

	case roundRectangle:
		pDC->RoundRect(rect, m_roundness);
		break;

	case ellipse:
		pDC->Ellipse(rect);
		break;

	case circle:
		DrawCircle(pDC,rect);
		//pDC->Circle(rect);
		break;

	case line:
		if (rect.top > rect.bottom)
		{
			rect.top -= m_logpen.lopnWidth.y / 2;
			rect.bottom += (m_logpen.lopnWidth.y + 1) / 2;
		}
		else
		{
			rect.top += (m_logpen.lopnWidth.y + 1) / 2;
			rect.bottom -= m_logpen.lopnWidth.y / 2;
		}

		if (rect.left > rect.right)
		{
			rect.left -= m_logpen.lopnWidth.x / 2;
			rect.right += (m_logpen.lopnWidth.x + 1) / 2;
		}
		else
		{
			rect.left += (m_logpen.lopnWidth.x + 1) / 2;
			rect.right -= m_logpen.lopnWidth.x / 2;
		}

		pDC->MoveTo(rect.TopLeft());
		pDC->LineTo(rect.BottomRight());
		break;
	}

	pDC->SelectObject(pOldBrush);
	pDC->SelectObject(pOldPen);
}


int CDrawRect::GetHandleCount()
{
	ASSERT_VALID(this);

	return m_nShape == line ? 2 :
		CDrawObj::GetHandleCount() + (m_nShape == roundRectangle);
}

// returns center of handle in logical coordinates
CPoint CDrawRect::GetHandle(int nHandle)
{
	ASSERT_VALID(this);

	if (m_nShape == line && nHandle == 2)
		nHandle = 5;
	else if (m_nShape == roundRectangle && nHandle == 9)
	{
		CRect rect = m_position;
		rect.NormalizeRect();
		CPoint point = rect.BottomRight();
		point.x -= m_roundness.x / 2;
		point.y -= m_roundness.y / 2;
		return point;
	}

	return CDrawObj::GetHandle(nHandle);
}

HCURSOR CDrawRect::GetHandleCursor(int nHandle)
{
	ASSERT_VALID(this);

	if (m_nShape == line && nHandle == 2)
		nHandle = 5;
	else if (m_nShape == roundRectangle && nHandle == 9)
		return AfxGetApp()->LoadStandardCursor(IDC_SIZEALL);
	return CDrawObj::GetHandleCursor(nHandle);
}

// point is in logical coordinates
void CDrawRect::MoveHandleTo(int nHandle, CPoint point, CDrawView* pView)
{
	ASSERT_VALID(this);

	if (m_nShape == line && nHandle == 2)
		nHandle = 5;
	else if (m_nShape == roundRectangle && nHandle == 9)
	{
		CRect rect = m_position;
		rect.NormalizeRect();
		if (point.x > rect.right - 1)
			point.x = rect.right - 1;
		else if (point.x < rect.left + rect.Width() / 2)
			point.x = rect.left + rect.Width() / 2;
		if (point.y > rect.bottom - 1)
			point.y = rect.bottom - 1;
		else if (point.y < rect.top + rect.Height() / 2)
			point.y = rect.top + rect.Height() / 2;
		m_roundness.x = 2 * (rect.right - point.x);
		m_roundness.y = 2 * (rect.bottom - point.y);
		m_pDocument->SetModifiedFlag();
		if (pView == NULL)
			Invalidate();
		else
			pView->InvalObj(this);
		return;
	}

	CDrawObj::MoveHandleTo(nHandle, point, pView);
}

// rect must be in logical coordinates
BOOL CDrawRect::Intersects(const CRect& rect)
{
	ASSERT_VALID(this);

	CRect rectT = rect;
	rectT.NormalizeRect();

	CRect fixed = m_position;
	fixed.NormalizeRect();
	if ((rectT & fixed).IsRectEmpty())
		return FALSE;

	CRgn rgn;
	switch (m_nShape)
	{
	case rectangle:
		return TRUE;

	case roundRectangle:
		rgn.CreateRoundRectRgn(fixed.left, fixed.top, fixed.right, fixed.bottom,
			m_roundness.x, m_roundness.y);
		break;

	case ellipse:
		rgn.CreateEllipticRgnIndirect(fixed);
		break;

	case line:
		{
			int x = (m_logpen.lopnWidth.x + 5) / 2;
			int y = (m_logpen.lopnWidth.y + 5) / 2;
			POINT points[4];
			points[0].x = fixed.left;
			points[0].y = fixed.top;
			points[1].x = fixed.left;
			points[1].y = fixed.top;
			points[2].x = fixed.right;
			points[2].y = fixed.bottom;
			points[3].x = fixed.right;
			points[3].y = fixed.bottom;

			if (fixed.left < fixed.right)
			{
				points[0].x -= x;
				points[1].x += x;
				points[2].x += x;
				points[3].x -= x;
			}
			else
			{
				points[0].x += x;
				points[1].x -= x;
				points[2].x -= x;
				points[3].x += x;
			}

			if (fixed.top < fixed.bottom)
			{
				points[0].y -= y;
				points[1].y += y;
				points[2].y += y;
				points[3].y -= y;
			}
			else
			{
				points[0].y += y;
				points[1].y -= y;
				points[2].y -= y;
				points[3].y += y;
			}
			rgn.CreatePolygonRgn(points, 4, ALTERNATE);
		}
		break;
	case circle:
		rgn.CreateEllipticRgnIndirect(fixed);
		break;
	}
	return rgn.RectInRegion(fixed);
}

CDrawObj* CDrawRect::Clone(CDrawDoc* pDoc)
{
	ASSERT_VALID(this);

	CDrawRect* pClone = new CDrawRect(m_position);

	pClone->m_bPen = m_bPen;
	pClone->m_logpen = m_logpen;
	pClone->m_bBrush = m_bBrush;
	pClone->m_logbrush = m_logbrush;
	pClone->m_nShape = m_nShape;
	pClone->m_roundness = m_roundness;

	pClone->m_nOrder = m_nOrder;
	pClone->m_nType = m_nType;

	ASSERT_VALID(pClone);

	if (pDoc != NULL)
		pDoc->Add(pClone);

	ASSERT_VALID(pClone);

	return pClone;
}
////////////////////////////////////////////////////////////////////////////

IMPLEMENT_SERIAL(CDrawOleObj, CDrawObj, 0)

BOOL CDrawOleObj::c_bShowItems = TRUE;

CDrawOleObj::CDrawOleObj() : m_extent(0,0)
{
	m_pClientItem = NULL;
}

CDrawOleObj::CDrawOleObj(const CRect& position)
	: CDrawObj(position), m_extent(0, 0)
{
	m_pClientItem = NULL;
}

CDrawOleObj::~CDrawOleObj()
{
	if (m_pClientItem != NULL)
	{
		m_pClientItem->Release();
		m_pClientItem = NULL;
	}
}

void CDrawOleObj::Remove()
{
	if (m_pClientItem != NULL)
	{
		m_pClientItem->Delete();
		m_pClientItem = NULL;
	}
	CDrawObj::Remove();
}

void CDrawOleObj::Serialize( CArchive& ar )
{
	ASSERT_VALID(this);

	CDrawObj::Serialize(ar);

	if (ar.IsStoring())
	{
		ar << m_extent;
		ar << m_pClientItem;
	}
	else
	{
		ar >> m_extent;
		ar >> m_pClientItem;
		m_pClientItem->m_pDrawObj = this;
	}
 }

CDrawObj* CDrawOleObj::Clone(CDrawDoc* pDoc)
{
	ASSERT_VALID(this);
 
	AfxGetApp()->BeginWaitCursor();

	CDrawOleObj* pClone = NULL;
	CDrawItem* pItem = NULL;
 
	TRY
	{
		// perform a "deep copy" -- need to copy CDrawOleObj and the CDrawItem
		//  that it points to.
		CDrawOleObj* pClone = new CDrawOleObj(m_position);
		CDrawItem* pItem = new CDrawItem(m_pDocument, pClone);
		if (!pItem->CreateCloneFrom(m_pClientItem))
			AfxThrowMemoryException();

		pClone->m_pClientItem = pItem;
		pClone->m_bPen = m_bPen;
		pClone->m_logpen = m_logpen;
		pClone->m_bBrush = m_bBrush;
		pClone->m_logbrush = m_logbrush;

		pClone->m_nOrder = m_nOrder;
	    pClone->m_nType = m_nType;

		ASSERT_VALID(pClone);

		if (pDoc != NULL)
			pDoc->Add(pClone);
	}
	CATCH_ALL(e)
	{
		pItem->Delete();
		pClone->m_pClientItem = NULL;
		pClone->Remove();
		AfxGetApp()->EndWaitCursor();

		THROW_LAST();
	}
	END_CATCH_ALL

	AfxGetApp()->EndWaitCursor();

	return pClone;
}

void CDrawOleObj::Draw(CDC* pDC)
{
	ASSERT_VALID(this);

	CDrawItem* pItem = m_pClientItem;
	if (pItem != NULL)
	{
		// draw the OLE item itself
		pItem->Draw(pDC, m_position);

		// don't draw tracker in print preview or on printer
		if (!pDC->IsPrinting())
		{
			// use a CRectTracker to draw the standard effects
			CRectTracker tracker;
			tracker.m_rect = m_position;
			pDC->LPtoDP(tracker.m_rect);

			if (c_bShowItems)
			{
				// put correct border depending on item type
				if (pItem->GetType() == OT_LINK)
					tracker.m_nStyle |= CRectTracker::dottedLine;
				else
					tracker.m_nStyle |= CRectTracker::solidLine;
			}

			// put hatching over the item if it is currently open
			if (pItem->GetItemState() == COleClientItem::openState ||
				pItem->GetItemState() == COleClientItem::activeUIState)
			{
				tracker.m_nStyle |= CRectTracker::hatchInside;
			}
			tracker.Draw(pDC);
		}
	}
}

void CDrawOleObj::OnOpen(CDrawView* pView)
{
	AfxGetApp()->BeginWaitCursor();
	m_pClientItem->DoVerb(
#ifndef _MAC		
		GetKeyState(VK_CONTROL) < 0 ? OLEIVERB_OPEN : OLEIVERB_PRIMARY,
#else		
		GetKeyState(VK_OPTION) < 0 ? OLEIVERB_OPEN : OLEIVERB_PRIMARY,
#endif		
		pView);
	AfxGetApp()->EndWaitCursor();
}

void CDrawOleObj::OnEditProperties()
{
	// using COlePropertiesDialog directly means no scaling
	COlePropertiesDialog dlg(m_pClientItem, 100, 100, NULL);

	dlg.DoModal();
}

// position is in logical
void CDrawOleObj::MoveTo(const CRect& position, CDrawView* pView)
{
	ASSERT_VALID(this);

	if (position == m_position)
		return;

	// call base class to update position
	CDrawObj::MoveTo(position, pView);

	// update position of in-place editing session on position change
	if (m_pClientItem->IsInPlaceActive())
		m_pClientItem->SetItemRects();
}

/////////////////////////////////////////////////////////////////////////////