frameview.cpp

visual c++数字图像与图形处理中的光盘内容

// FrameView.cpp : implementation of the CFrameView class
//

#include "stdafx.h"
#include "Frame.h"

#include "FrameDoc.h"
#include "FrameView.h"

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

#include "Dib.h"

/////////////////////////////////////////////////////////////////////////////
// CFrameView

IMPLEMENT_DYNCREATE(CFrameView,  CView)

BEGIN_MESSAGE_MAP(CFrameView,  CView)
	//{{AFX_MSG_MAP(CFrameView)
	ON_WM_CREATE()
	ON_WM_TIMER()
	ON_WM_DESTROY()
	ON_COMMAND(IDM_PAUSE,  OnPause)
	ON_UPDATE_COMMAND_UI(IDM_PAUSE,  OnUpdatePause)
	ON_COMMAND(IDM_PLAY,  OnPlay)
	ON_UPDATE_COMMAND_UI(IDM_PLAY,  OnUpdatePlay)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFrameView construction/destruction

CFrameView::CFrameView()
{
	// TODO: add construction code here
	m_nCurrentFrame = 0;
	m_bPlay = TRUE;
}

CFrameView::~CFrameView()
{

	for(int i = 0; i < m_nTotalFrames; i++)
	{
		CDib* pDib = (CDib*)m_frameArray.GetAt(i);
		delete pDib;
	}
	m_frameArray.RemoveAll();

}

BOOL CFrameView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs
	
	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CFrameView drawing

void CFrameView::OnDraw(CDC* pDC)
{
	// TODO: add draw code for native data here

	CRect rect;
	GetClientRect(&rect);
	int nClientWidth = rect.Width();
	int nClientHeight = rect.Height();
	
	CDC memDC;
	memDC.CreateCompatibleDC(pDC);

	CBitmap bitmap;
	bitmap.CreateCompatibleBitmap(pDC,  nClientWidth,  nClientHeight);
	CBitmap* pOldBitmap = memDC.SelectObject(&bitmap);
	CBrush* pBrush = new CBrush(RGB(0, 0, 0));
	memDC.FillRect(rect, pBrush);
	delete pBrush;

	CDib* pDib = (CDib*)m_frameArray.GetAt(m_nCurrentFrame);

	int nWidth = (int)pDib->GetWidth();
	int	nHeight = (int)pDib->GetHeight(); 

	pDib->Draw(memDC.m_hDC,  (nClientWidth - nWidth) / 2 ,  (nClientHeight - nHeight) / 2,  nWidth,  nHeight,  0,  0,  nWidth,  nHeight,  DIB_RGB_COLORS,  SRCCOPY);

	pDC->BitBlt(0,  0,  nClientWidth,  nClientHeight,  &memDC,  0,  0,  SRCCOPY);	
	memDC.SelectObject(pOldBitmap);
	bitmap.DeleteObject();

}

/////////////////////////////////////////////////////////////////////////////
// CFrameView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CFrameView message handlers

int CFrameView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	
	m_nTotalFrames = 26;
	for(int i = 0; i < m_nTotalFrames; i++)
	{
		CString strFileName = "flame";
		if(i < 10)strFileName += "0";
		
		CString strItoa;
		strItoa.Format("%d",  i);
		strFileName += (strItoa + ".bmp");

		CDib* pDib = new CDib(strFileName);
		m_frameArray.Add(pDib);
	}

	SetTimer(1,  30,  NULL);
	return 0;
}

void CFrameView::OnTimer(UINT nIDEvent) 
{
	// TODO: Add your message handler code here and/or call default
	
	m_nCurrentFrame++;
	m_nCurrentFrame  = m_nCurrentFrame % m_nTotalFrames;

	Invalidate(FALSE);	
	CView::OnTimer(nIDEvent);
}

void CFrameView::OnDestroy() 
{
	CView::OnDestroy();
	
	// TODO: Add your message handler code here
	if(m_bPlay)KillTimer(1);
	
}

void CFrameView::OnPause() 
{
	// TODO: Add your command handler code here
	m_bPlay = FALSE;
	KillTimer(1);
	
}

void CFrameView::OnUpdatePause(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if(!m_bPlay)
		pCmdUI ->SetCheck(TRUE);
	else
		pCmdUI ->SetCheck(FALSE);	
	
}

void CFrameView::OnPlay() 
{
	// TODO: Add your command handler code here
	m_bPlay = TRUE;
	SetTimer(1,  30,  NULL);
}

void CFrameView::OnUpdatePlay(CCmdUI* pCmdUI) 
{
	// TODO: Add your command update UI handler code here
	if(m_bPlay)
		pCmdUI ->SetCheck(TRUE);
	else
		pCmdUI ->SetCheck(FALSE);	
	
}