cntritem.cpp

陈建春<用VC++开发GIS系统>源码.适合于GIS学习者,以及学习图形图象编程的朋友.

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

#include "stdafx.h"
#include "Draw.h"

#include "DrawDoc.h"
#include "DrawView.h"
#include "CntrItem.h"

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

extern void DPtoVP(float x,float y,int *X,int *Y);
extern void VPtoDP(int x,int y,float *X,float *Y);
extern BOOL IsRectCross(float minx,float miny,float maxx,float maxy);
/////////////////////////////////////////////////////////////////////////////
// CDrawCntrItem implementation

IMPLEMENT_SERIAL(CDrawCntrItem, COleClientItem, 0)

CDrawCntrItem::CDrawCntrItem(CDrawDoc* pContainer)
	: COleClientItem(pContainer)
{
	// TODO: add one-time construction code here
	VPtoDP(10,210,&m_X1,&m_Y1);
	VPtoDP(210,10,&m_X2,&m_Y2);
	b_Select=FALSE;
}

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

void CDrawCntrItem::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 CDrawCntrItem::OnChangeItemPosition(const CRect& rectPos)
{
	ASSERT_VALID(this);

	// During in-place activation CDrawCntrItem::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

	return TRUE;
}

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

	// During in-place activation, CDrawCntrItem::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 CDrawCntrItem::GetActiveView.

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

	rPosition.SetRect(10, 10, 210, 210);
}

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

void CDrawCntrItem::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 CDrawCntrItem::Serialize(CArchive& ar)
{
	ASSERT_VALID(this);
	COleClientItem::Serialize(ar);
	if (ar.IsStoring())
	{
		ar<<m_X1<<m_Y1<<m_X2<<m_Y2;
	}
	else
	{
		ar>>m_X1>>m_Y1>>m_X2>>m_Y2;
		b_Select=FALSE;
	}
}

/////////////////////////////////////////////////////////////////////////////
// CDrawCntrItem diagnostics

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

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

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

void CDrawCntrItem::Draw(CDC * pDC)
{
	int x1,y1,x2,y2;
	CRect m_rect;
	//加入判断是否在
	if(!IsRectCross(m_X1,m_Y1,m_X2,m_Y2))
		return;
	DPtoVP(m_X1,m_Y1,&x1,&y1);
	DPtoVP(m_X2,m_Y2,&x2,&y2);
	m_rect.SetRect(x1,y2,x2,y1);
	COleClientItem::Draw(pDC,m_rect);
	if(b_Select)
		pDC->InvertRect(&m_rect);
}

BOOL CDrawCntrItem::IsPoint(CPoint point)
{
	float x1,y1;
	VPtoDP(point.x,point.y,&x1,&y1);
	if(x1>=m_X1&&x1<=m_X2&&y1>=m_Y1&&y1<=m_Y2)
		return TRUE;
	return FALSE;
}