waveletcoi.cpp

使用小波变换的处理方法对图象进行图象的压缩。

// WaveletCoi.cpp : implementation file
//

#include "stdafx.h"
#include "小波变换.h"
#include "WaveletCoi.h"
#include "math.h"
#include "Daubechiesdlg.h"
#include "Symletsdlg.h"

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

const double pi=3.1415926535;
/////////////////////////////////////////////////////////////////////////////
// CWaveletCoi dialog


CWaveletCoi::CWaveletCoi(CWnd* pParent /*=NULL*/)
	: CDialog(CWaveletCoi::IDD, pParent)
{
	//{{AFX_DATA_INIT(CWaveletCoi)
	m_waveletfunction = -1;
	m_waveletlength = 0;
	//}}AFX_DATA_INIT
}


void CWaveletCoi::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CWaveletCoi)
	DDX_Radio(pDX, IDC_SHANNON, m_waveletfunction);
	DDX_Text(pDX, IDC_WAVELETLENGTH, m_waveletlength);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CWaveletCoi, CDialog)
	//{{AFX_MSG_MAP(CWaveletCoi)
	ON_WM_PAINT()
	ON_BN_CLICKED(IDC_DAUBECHIES, OnDaubechies)
	ON_BN_CLICKED(IDC_MORLET, OnMorlet)
	ON_BN_CLICKED(IDC_MEXICANHAT, OnMexicanhat)
	ON_BN_CLICKED(IDC_MEYER, OnMeyer)
	ON_BN_CLICKED(IDC_BSPLINE, OnBspline)
	ON_BN_CLICKED(IDC_SYMLETS, OnSymlets)
	ON_BN_CLICKED(IDC_COIFLETS, OnCoiflets)
	ON_BN_CLICKED(IDC_SHANNON, OnShannon)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CWaveletCoi message handlers


BOOL CWaveletCoi::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	GetDlgItem(IDC_FUNCTIONIMAGE)->GetWindowRect(&m_prectfunction);
	ScreenToClient(&m_prectfunction);

	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CWaveletCoi::OnShannon() 
{
	// TODO: Add your control notification handler code here
	if(IsDlgButtonChecked(IDC_SHANNON))
	{
		m_bitmap.LoadBitmap(IDB_SHANNON);
		m_strlength="0000";
		InvalidateRect(&m_prectfunction);
		UpdateWindow();
	}		
}

void CWaveletCoi::OnDaubechies() 
{
	// TODO: Add your control notification handler code here
if(IsDlgButtonChecked(IDC_DAUBECHIES))
	{
		CDaubechiesdlg daudlg;
		if(daudlg.DoModal()==IDOK)
		{
			int i;
			i=daudlg.m_nlength;
			switch(i)
			{
			case 1:
				m_bitmap.LoadBitmap(IDB_DAUBECHIES1);
				break;
			case 4:
				m_bitmap.LoadBitmap(IDB_DAUBECHIES4);
				break;
			case 6:
				m_bitmap.LoadBitmap(IDB_DAUBECHIES6);
				break;
			case 8:
				m_bitmap.LoadBitmap(IDB_DAUBECHIES8);
				break;
			default:
				m_bitmap.LoadBitmap(IDB_DAUBECHIES);
				break;
			}				
			m_strlength.Format("%d",2*i);
			InvalidateRect(&m_prectfunction);
			UpdateWindow();
		}
	}	
}

void CWaveletCoi::OnMorlet() 
{
	// TODO: Add your control notification handler code here
	if(IsDlgButtonChecked(IDC_MORLET))
	{
		m_bitmap.LoadBitmap(IDB_MORLET);
		m_strlength="0000";
		InvalidateRect(&m_prectfunction);
		UpdateWindow();
	}	
	
}

void CWaveletCoi::OnMexicanhat() 
{
	// TODO: Add your control notification handler code here
	if(IsDlgButtonChecked(IDC_MEXICANHAT))
	{
		m_bitmap.LoadBitmap(IDB_MEXICANHAT);
		m_strlength="0000";
		InvalidateRect(&m_prectfunction);
		UpdateWindow();
	}	
	
}

void CWaveletCoi::OnMeyer() 
{
	// TODO: Add your control notification handler code here

	if(IsDlgButtonChecked(IDC_MEYER))
	{	
		m_bitmap.LoadBitmap(IDB_MEYER);
		m_strlength="0000";
		InvalidateRect(&m_prectfunction);
		UpdateWindow();
	}			
}

void CWaveletCoi::OnBspline() 
{
	// TODO: Add your control notification handler code here
	if(IsDlgButtonChecked(IDC_BSPLINE))
	{
		m_bitmap.LoadBitmap(IDB_BSPLINE);
		m_strlength="0000";
		InvalidateRect(&m_prectfunction);
		UpdateWindow();
	}	
}

void CWaveletCoi::OnSymlets() 
{
	// TODO: Add your control notification handler code here

	if(IsDlgButtonChecked(IDC_SYMLETS))
	{
		CSymletsdlg symdlg;
		if(symdlg.DoModal()==IDOK)
		{
			int i;
			i=symdlg.m_symlength;
			switch(i)
			{
			case 4:
				m_bitmap.LoadBitmap(IDB_SYMLETS4);
				break;
			case 6:
				m_bitmap.LoadBitmap(IDB_SYMLETS6);
				break;
			case 8:
				m_bitmap.LoadBitmap(IDB_SYMLETS8);
				break;
			default:
				m_bitmap.LoadBitmap(IDB_SYMLETS);
				break;
			}
			m_strlength.Format("%d",i*2);
			InvalidateRect(&m_prectfunction);
			UpdateWindow();
		}
	}	
}

void CWaveletCoi::OnCoiflets() 
{
	// TODO: Add your control notification handler code here

	if(IsDlgButtonChecked(IDC_COIFLETS))
	{
		m_bitmap.LoadBitmap(IDB_COIFLETS);
		m_strlength="8";
		InvalidateRect(&m_prectfunction);
		UpdateWindow();
	}	
	
}

void CWaveletCoi::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	// TODO: Add your message handler code here	
	UpdateData(TRUE);
	if((m_waveletfunction>=0)&&(m_waveletfunction<=7))
	{
		CDC dcmem;
		dcmem.CreateCompatibleDC(&dc);	
		BITMAP bmp;
		m_bitmap.GetBitmap(&bmp);
		dcmem.SelectObject(m_bitmap);
		double h,v;
		h=double(bmp.bmWidth)/double(m_prectfunction.Width());
		v=double(bmp.bmHeight)/double(m_prectfunction.Height());
		if((h<=1)&&(v<=1))
		{
			dc.BitBlt(m_prectfunction.left+(m_prectfunction.Width()-bmp.bmWidth)/2,
				m_prectfunction.top+(m_prectfunction.Height()-bmp.bmHeight)/2,
				bmp.bmWidth,bmp.bmHeight,&dcmem,0,0,SRCCOPY);
		}
		else 
		{
			if(h>v)
				dc.StretchBlt(m_prectfunction.left,
				m_prectfunction.top+int(m_prectfunction.Height()-bmp.bmHeight/h)/2,
				m_prectfunction.Width(),int(bmp.bmHeight/h),
				&dcmem,0,0,bmp.bmWidth,bmp.bmHeight,SRCCOPY);
			else
				dc.StretchBlt(m_prectfunction.left+int(m_prectfunction.Width()-bmp.bmWidth/v)/2,
				m_prectfunction.top,
				int(bmp.bmWidth/v),m_prectfunction.Height(),
				&dcmem,0,0,bmp.bmWidth,bmp.bmHeight,SRCCOPY);
		}
		GetDlgItem(IDC_WAVELETLENGTH)->SetWindowText(m_strlength);
		GetDlgItem(IDOK)->EnableWindow(TRUE);
		m_bitmap.DeleteObject();
	}
	// Do not call CDialog::OnPaint() for painting messages
}