cntritem.cpp

常用算法与数据结构原代码

// CntrItem.cpp : implementation of the CMapCntrItem class
//

#include "stdafx.h"
#include "Map.h"

#include "MapDoc.h"
#include "MapView.h"
#include "CntrItem.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CMapCntrItem implementation

IMPLEMENT_SERIAL(CMapCntrItem, COleClientItem, 0)

CMapCntrItem::CMapCntrItem(CMapDoc* pContainer)
	: COleClientItem(pContainer)
{
	// TODO: add one-time construction code here
	m_Rect.SetRect(12,12,34,34);
	m_CenterPoint.x=m_CenterPoint.y=23;
}

CMapCntrItem::~CMapCntrItem()
{
	// TODO: add cleanup code here
	
}

void CMapCntrItem::OnChange(OLE_NOTIFICATION nCode, DWORD dwParam)
{
	ASSERT_VALID(this);

	COleClientItem::OnChange(nCode, dwParam);

	// When an item is being edited (either in-place or fully open)
	//  it sends OnChange notifications for changes in the state of the
	//  item or visual appearance of its content.

	// TODO: invalidate the item by calling UpdateAllViews
	//  (with hints appropriate to your application)

	GetDocument()->UpdateAllViews(NULL);
		// for now just update ALL views/no hints
}

BOOL CMapCntrItem::OnChangeItemPosition(const CRect& rectPos)
{
	ASSERT_VALID(this);

	// During in-place activation CMapCntrItem::OnChangeItemPosition
	//  is called by the server to change the position of the in-place
	//  window.  Usually, this is a result of the data in the server
	//  document changing such that the extent has changed or as a result
	//  of in-place resizing.
	//
	// The default here is to call the base class, which will call
	//  COleClientItem::SetItemRects to move the item
	//  to the new position.

	if (!COleClientItem::OnChangeItemPosition(rectPos))
		return FALSE;

	// TODO: update any cache you may have of the item's rectangle/extent
	this->ChangePosition(rectPos);
	return TRUE;
}

void CMapCntrItem::OnGetItemPosition(CRect& rPosition)
{
	ASSERT_VALID(this);

	// During in-place activation, CMapCntrItem::OnGetItemPosition
	//  will be called to determine the location of this item.  The default
	//  implementation created from AppWizard simply returns a hard-coded
	//  rectangle.  Usually, this rectangle would reflect the current
	//  position of the item relative to the view used for activation.
	//  You can obtain the view by calling CMapCntrItem::GetActiveView.

	// TODO: return correct rectangle (in pixels) in rPosition

	rPosition=m_Rect;
}

void CMapCntrItem::OnActivate()
{
    // Allow only one inplace activate item per frame
    CMapView* pView = GetActiveView();
    ASSERT_VALID(pView);
    COleClientItem* pItem = GetDocument()->GetInPlaceActiveItem(pView);
    if (pItem != NULL && pItem != this)
        pItem->Close();
    
    COleClientItem::OnActivate();
}

void CMapCntrItem::OnDeactivateUI(BOOL bUndoable)
{
	COleClientItem::OnDeactivateUI(bUndoable);

    // Hide the object if it is not an outside-in object
    DWORD dwMisc = 0;
    m_lpObject->GetMiscStatus(GetDrawAspect(), &dwMisc);
    if (dwMisc & OLEMISC_INSIDEOUT)
        DoVerb(OLEIVERB_HIDE, NULL);
}

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

	// Call base class first to read in COleClientItem data.
	// Since this sets up the m_pDocument pointer returned from
	//  CMapCntrItem::GetDocument, it is a good idea to call
	//  the base class Serialize first.
	COleClientItem::Serialize(ar);

	// now store/retrieve data specific to CMapCntrItem
	if (ar.IsStoring())
	{
		// TODO: add storing code here
		ar<<m_Rect;
		ar<<m_Key;
		ar<<m_CenterPoint;
	}
	else
	{
		// TODO: add loading code here
		ar>>m_Rect;
		ar>>m_Key;
		ar>>m_CenterPoint;
	}
}

/////////////////////////////////////////////////////////////////////////////
// CMapCntrItem diagnostics

#ifdef _DEBUG
void CMapCntrItem::AssertValid() const
{
	COleClientItem::AssertValid();
}

void CMapCntrItem::Dump(CDumpContext& dc) const
{
	COleClientItem::Dump(dc);
}
#endif

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




#define DISTANCE(A,C,B,D) sqrt((A-B)*(A-B)+(C-D)*(C-D))
CPoint CMapCntrItem::GetBeginPoint(CPoint endPoint)
{
	double d=2*DISTANCE(m_CenterPoint.x,m_CenterPoint.y,endPoint.x,endPoint.y);
	endPoint.x=m_CenterPoint.x+m_Rect.Width()*(endPoint.x-m_CenterPoint.x)/d;
	endPoint.y=m_CenterPoint.y+m_Rect.Height()*(endPoint.y-m_CenterPoint.y)/d;
	return endPoint;
}

void CMapCntrItem::ChangePosition(CRect rect)
{
	m_Rect=rect;
	m_CenterPoint.x=(m_Rect.left+m_Rect.right)/2;
	m_CenterPoint.y=(m_Rect.top+m_Rect.bottom)/2;
}

void CMapCntrItem::LineToItem(CDC *pdc, CMapCntrItem *Item)
{
	CPoint bPoint=GetBeginPoint(Item->m_CenterPoint);
	CPoint ePoint=Item->GetBeginPoint(m_CenterPoint);
	if(bPoint!=ePoint)
	{
		pdc->MoveTo(bPoint);
		pdc->LineTo(ePoint);
		CPen pBoldPen,*pOldPen;
		pBoldPen.CreatePen(PS_SOLID,5,RGB(0,0,0));
		pOldPen=pdc->SelectObject(&pBoldPen);
		CSize temp=bPoint-ePoint;
		temp.cx=temp.cx/50;
		temp.cy=temp.cy/50;
		pdc->LineTo(ePoint+temp);
		pdc->SelectObject(pOldPen);
	}
}