hanoidlg.cpp

汉诺(hanoi)问题采用递归算法解决

// HanoiDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Hanoi.h"
#include "HanoiDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CHanoiDlg dialog

CHanoiDlg::CHanoiDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CHanoiDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CHanoiDlg)
	m_nTrayNumber = 5;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	A = new CSeat("A", 100,300,0, 80);
	B = new CSeat("B", 300,300,0, 80);
	C = new CSeat("C", 500,300,0, 80);
}

void CHanoiDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CHanoiDlg)
	DDX_Control(pDX, IDC_CB, m_btnCB);
	DDX_Control(pDX, IDC_CA, m_btnCA);
	DDX_Control(pDX, IDC_BC, m_btnBC);
	DDX_Control(pDX, IDC_BA, m_btnBA);
	DDX_Control(pDX, IDC_AC, m_btnAC);
	DDX_Control(pDX, IDC_AB, m_btnAB);
	DDX_Text(pDX, IDC_TRAY_NUMBER, m_nTrayNumber);
	DDV_MinMaxUInt(pDX, m_nTrayNumber, 3, 10);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CHanoiDlg, CDialog)
	//{{AFX_MSG_MAP(CHanoiDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_DEMO, OnDemo)
	ON_BN_CLICKED(IDC_PLAY, OnPlay)
	ON_BN_CLICKED(IDC_AB, OnAb)
	ON_BN_CLICKED(IDC_AC, OnAc)
	ON_BN_CLICKED(IDC_BA, OnBa)
	ON_BN_CLICKED(IDC_BC, OnBc)
	ON_BN_CLICKED(IDC_CA, OnCa)
	ON_BN_CLICKED(IDC_CB, OnCb)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHanoiDlg message handlers

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

	// 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
	
	// TODO: Add extra initialization here
	
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CHanoiDlg::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 CHanoiDlg::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
	{
		Reset();
		CDialog::OnPaint();

	}
}

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

void CHanoiDlg::OnDemo() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	if(m_nTrayNumber < 3 || m_nTrayNumber >10)
		return;
	Reset();
	m_btnAB.ShowWindow(SW_HIDE);
	m_btnAC.ShowWindow(SW_HIDE);
	m_btnBA.ShowWindow(SW_HIDE);
	m_btnBC.ShowWindow(SW_HIDE);
	m_btnCA.ShowWindow(SW_HIDE);
	m_btnCB.ShowWindow(SW_HIDE);
	CClientDC dc(this); // device context for painting

	Hanoi(&dc,m_nTrayNumber,A,B,C);
}

void CHanoiDlg::Hanoi(CDC *pDC, int n, CSeat *one, CSeat *two, CSeat *three)
{
	if(n==1)
		one->MoveTo(pDC,three);
	else
	{
		Hanoi(pDC,n-1,one,three,two);
		one->MoveTo(pDC, three);
		Hanoi(pDC,n-1,two,one,three);
	}

}

void CHanoiDlg::Reset() 
{
	CClientDC dc(this); // device context for painting
	CBrush brush;
	brush.CreateSolidBrush(GetSysColor(COLOR_3DFACE));
	CBrush *pOldBrush = dc.SelectObject(&brush);
	dc.Rectangle(10,100,590,330);
	dc.SelectObject(pOldBrush);

	dc.SetBkColor(GetSysColor(COLOR_3DFACE));
	A->Draw(&dc);
	B->Draw(&dc);
	C->Draw(&dc);


	A->m_nTrayNumber = 0;
	B->m_nTrayNumber = 0;
	C->m_nTrayNumber = 0;
	if(A)
		delete A;
	A = new CSeat("A", 100,300,m_nTrayNumber, 80);
	A->DrawTray(&dc);

}

void CHanoiDlg::OnPlay() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	if(m_nTrayNumber < 3 || m_nTrayNumber >10)
		return;
	CClientDC dc(this); // device context for painting

	Reset();
	m_btnAB.ShowWindow(SW_SHOW);
	m_btnAC.ShowWindow(SW_SHOW);
	m_btnBA.ShowWindow(SW_SHOW);
	m_btnBC.ShowWindow(SW_SHOW);
	m_btnCA.ShowWindow(SW_SHOW);
	m_btnCB.ShowWindow(SW_SHOW);
}

void CHanoiDlg::OnAb() 
{
	// TODO: Add your control notification handler code here
	CClientDC dc(this); // device context for painting
	A->MoveTo(&dc, B);	
}

void CHanoiDlg::OnAc() 
{
	// TODO: Add your control notification handler code here
	CClientDC dc(this); // device context for painting
	A->MoveTo(&dc, C);	
	
}

void CHanoiDlg::OnBa() 
{
	// TODO: Add your control notification handler code here
	CClientDC dc(this); // device context for painting
	B->MoveTo(&dc, A);	
	
}

void CHanoiDlg::OnBc() 
{
	// TODO: Add your control notification handler code here
	CClientDC dc(this); // device context for painting
	B->MoveTo(&dc, C);	
	
}

void CHanoiDlg::OnCa() 
{
	// TODO: Add your control notification handler code here
	CClientDC dc(this); // device context for painting
	C->MoveTo(&dc, A);	
	
}

void CHanoiDlg::OnCb() 
{
	// TODO: Add your control notification handler code here
	CClientDC dc(this); // device context for painting
	C->MoveTo(&dc, B);	
	
}