// MyView.cpp : implementation of the CMyView class
//

#include "stdafx.h"
#include "My.h"

#include "MyDoc.h"
#include "MyView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMyView

IMPLEMENT_DYNCREATE(CMyView, CView)

BEGIN_MESSAGE_MAP(CMyView, CView)
	//{{AFX_MSG_MAP(CMyView)
	ON_WM_KEYDOWN()
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyView construction/destruction

CMyView::CMyView()
{
	// TODO: add construction code here

}

CMyView::~CMyView()
{
}

BOOL CMyView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMyView drawing

void CMyView::OnDraw(CDC* pDC)
{
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	pDC->Ellipse(pDoc->m_rectBody);  //畫出橢圓
}

/////////////////////////////////////////////////////////////////////////////
// CMyView printing

BOOL CMyView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CMyView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CMyView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CMyView diagnostics

#ifdef _DEBUG
void CMyView::AssertValid() const
{
	CView::AssertValid();
}

void CMyView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CMyDoc* CMyView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMyDoc)));
	return (CMyDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMyView message handlers

void CMyView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	// TODO: Add your message handler code here and/or call default
	CMyDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	CRect rectClient;
   	GetClientRect(&rectClient);  //得到客戶區(qū)大小，以防移出客戶區(qū)
	InvalidateRect(pDoc->m_rectBody, TRUE);  //擦除原位置圖形
	switch(nChar)
	{
		case VK_UP:
			if(pDoc->m_rectBody.top>rectClient.top)  //判斷是否移出上界
			{
				pDoc->m_rectBody.top    -= 5;
				pDoc->m_rectBody.bottom -= 5;
			}
			break;
		case VK_DOWN:
			if(pDoc->m_rectBody.bottom<rectClient.bottom) //判斷是否移出下界
			{
				pDoc->m_rectBody.top    += 5;
				pDoc->m_rectBody.bottom += 5;
			}
			break;
		case VK_LEFT:
			if(pDoc->m_rectBody.left>rectClient.left)   //判斷是否移出左界
			{
				pDoc->m_rectBody.left   -= 5;
				pDoc->m_rectBody.right  -= 5;
			}
			break;
		case VK_RIGHT:
			if(pDoc->m_rectBody.right<rectClient.right) //判斷是否移出右界
			{
				pDoc->m_rectBody.left   += 5;
				pDoc->m_rectBody.right  += 5;
			}
			break;
	}
	InvalidateRect(pDoc->m_rectBody, FALSE); //重畫新位置圖形
	
	CView::OnKeyDown(nChar, nRepCnt, nFlags);
}