huffmandlg.cpp

哈夫曼编码解码演示程序

// HuffmanDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Huffman.h"
#include "HuffmanDlg.h"
#include "InputDlg.h"
#include "OptionDlg.h"
#include "DecodeDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHuffmanDlg dialog

CHuffmanDlg::CHuffmanDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CHuffmanDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CHuffmanDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_Length=0;
    m_pThread=NULL;
	m_bIsStart=FALSE;
	m_bStep=FALSE;
	m_Wait=800;
	m_Pause=FALSE;
	m_DecodeEvent.ResetEvent();
	m_bKill=FALSE;
	m_bEndEncode=FALSE;
}

void CHuffmanDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CHuffmanDlg)
	DDX_Control(pDX, IDC_TREE, m_Tree);
	DDX_Control(pDX, IDC_CODE, m_Code);
	DDX_Control(pDX, IDC_DECODE, m_Decode);
	DDX_Control(pDX, IDC_STATE, m_StateList);
	DDX_Control(pDX, IDC_AUTO, m_Auto);
	DDX_Control(pDX, IDOK, m_Exit);
	DDX_Control(pDX, IDC_STOP, m_Stop);
	DDX_Control(pDX, IDC_STEP, m_Step);
	DDX_Control(pDX, IDC_OPTION, m_Option);
	DDX_Control(pDX, IDC_INPUT, m_Input);
	DDX_Control(pDX, IDC_DEMO, m_Demo);
	DDX_Control(pDX, IDC_SRCLIST, m_SrcList);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CHuffmanDlg, CDialog)
	//{{AFX_MSG_MAP(CHuffmanDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_INPUT, OnInput)
	ON_BN_CLICKED(IDC_STEP, OnStep)
	ON_BN_CLICKED(IDC_STOP, OnStop)
	ON_BN_CLICKED(IDC_AUTO, OnAuto)
	ON_BN_CLICKED(IDC_OPTION, OnOption)
	ON_WM_DESTROY()
	ON_BN_CLICKED(IDC_DECODE, OnDecode)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHuffmanDlg message handlers

BOOL CHuffmanDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	m_BmpFile=getPath();
	m_Demo.LoadBmp(m_BmpFile+"bmp\\dsdemo.jpg",
		m_BmpFile+"bmp\\node.bmp",m_BmpFile+"bmp\\nodefocus.bmp",
		m_BmpFile+"bmp\\leaf.bmp",m_BmpFile+"bmp\\leaffocus.bmp");
    
	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	m_Stop.EnableWindow(FALSE);
	m_Code.SetTextColor(RGB(255,255,0));
	m_Code.SetBarColor(RGB(80,0,0));
	m_Tree.SetTextColor(RGB(255,255,0));
	m_Tree.SetBarColor(RGB(80,0,0));
//	m_EnCode.SetBarColor(RGB(80,0,0));

    m_Stop.EnableWindow(FALSE);
	
	m_StateList.InsertColumn(0,"序号",LVCFMT_CENTER,35);
	m_StateList.InsertColumn(1,"权",LVCFMT_CENTER,40);
	m_StateList.InsertColumn(2,"父结点",LVCFMT_CENTER,50);
	m_StateList.InsertColumn(3,"左孩子",LVCFMT_CENTER,50);
	m_StateList.InsertColumn(4,"右孩子",LVCFMT_CENTER,50);

//	m_CodeState.InsertColumn(0,"结点",LVCFMT_CENTER,35);
//	m_CodeState.InsertColumn(1,"编码",LVCFMT_CENTER,100);

	AdjustWindow();

	m_Decode.SetShade(SHS_HSHADE,18,10,5,RGB(242,192,86));
	m_Decode.SetIcon(IDI_DECODE,BS_LEFT);
	m_Decode.SetToolTipText("解码");
	m_Input.SetShade(SHS_HSHADE,18,10,5,RGB(242,192,86));
	m_Input.SetIcon(IDI_INPUT,BS_LEFT);
	m_Input.SetToolTipText("输入数据");
	m_Option.SetShade(SHS_HSHADE,18,10,5,RGB(242,192,86));
	m_Option.SetIcon(IDI_OPTION,BS_LEFT);
	m_Option.SetToolTipText("设置演示书度速度");
	m_Auto.SetShade(SHS_HSHADE,18,10,5,RGB(242,192,86));
	m_Auto.SetIcon(IDI_AUTO,BS_LEFT);
    m_Auto.SetToolTipText("自动执行");
	m_Exit.SetShade(SHS_HSHADE,18,10,5,RGB(242,192,86));
	m_Exit.SetIcon(IDI_EXIT,BS_LEFT);
	m_Exit.SetToolTipText("退出");
	m_Step.SetShade(SHS_HSHADE,18,10,5,RGB(242,192,86));
	m_Step.SetIcon(IDI_STEP,BS_LEFT);
	m_Step.SetToolTipText("单步执行");
	m_Stop.SetShade(SHS_HSHADE,18,10,5,RGB(242,192,86));
	m_Stop.SetIcon(IDI_PAUSE,BS_LEFT);
	m_Stop.SetToolTipText("暂停");
	// TODO: Add extra initialization here
	InitData();
	AddPasscleSrc();
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CHuffmanDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CHuffmanDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CPaintDC dc(this);
		CDC memDC;
		memDC.CreateCompatibleDC(&dc);
		memDC.SelectObject(&m_bmpBK);
		CRect client;
		GetWindowRect(client);
		dc.BitBlt(0,0,client.Width(),client.Height(),&memDC,0,0,SRCCOPY);
		memDC.DeleteDC();
		//CDialog::OnPaint();        
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CHuffmanDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CHuffmanDlg::OnInput() 
{
	if(m_bIsStart)
	{
		if(MessageBox("正在演示,停止吗?",",数据结构演示",
			MB_ICONQUESTION|MB_OK|MB_OKCANCEL)!=IDOK)
		{
			return;
		}
		else 
		{
			Reset();
		}
	}
	CInputDlg dlg;
	if(dlg.DoModal()==IDOK)
	{
		m_Length=0;
		CString data=dlg.m_sInput;
		data+=',';
		CString d;		
		for(int i=0;i<data.GetLength();i++)
		{
			if(data.GetAt(i)!=',')
				d+=data.GetAt(i);
			else 
			{
				m_Weight[m_Length]=atoi(d);
				d.Empty();
				m_Length++;
				if(m_Length>=10)
					break;
			}
		}
	}
}
UINT CHuffmanDlg::DemoProc(LPVOID pProcParam)
{
	CHuffmanDlg*pDlg=(CHuffmanDlg*)pProcParam;	
	CHuffmanCode m_HuffCode;
	pDlg->m_Demo.Attach(&m_HuffCode);
	m_HuffCode.CreateCode(pDlg->m_Weight,pDlg->m_Length);