jpeg_prodlg.cpp

实现JPEG编码功能

// JPEG_PRODlg.cpp : implementation file
//

#include "stdafx.h"
#include "JPEG_PRO.h"
#include "JPEG_PRODlg.h"
#include "Splash.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()

/////////////////////////////////////////////////////////////////////////////
// CJPEG_PRODlg dialog

CJPEG_PRODlg::CJPEG_PRODlg(CWnd* pParent /*=NULL*/)
	: CDialog(CJPEG_PRODlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CJPEG_PRODlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CJPEG_PRODlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CJPEG_PRODlg)
	DDX_Control(pDX, IDC_BUTTON_TRANS, m_Trans);
	DDX_Control(pDX, IDC_BUTTON_READ, m_ReadBmp);
	DDX_Control(pDX, IDC_BUTTON_OPENJPEG, m_OpenJpeg);
	DDX_Control(pDX, IDC_BUTTON_EXIT, m_Exit);
	DDX_Control(pDX, IDC_BUTTON_ABOUT, m_About);
	DDX_Control(pDX, IDC_COMBO_Q, m_Q);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CJPEG_PRODlg, CDialog)
	//{{AFX_MSG_MAP(CJPEG_PRODlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_READ, OnButtonRead)
	ON_BN_CLICKED(IDC_BUTTON_TRANS, OnButtonTrans)
	ON_BN_CLICKED(IDC_BUTTON_OPENJPEG, OnButtonOpenjpeg)
	ON_BN_CLICKED(IDC_BUTTON_EXIT, OnButtonExit)
	ON_BN_CLICKED(IDC_BUTTON_ABOUT, OnButtonAbout)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CJPEG_PRODlg message handlers

BOOL CJPEG_PRODlg::OnInitDialog()
{
	CDialog::OnInitDialog();
    Q=100;
	BmpDib=NULL;
	JpegDib=NULL;
	BmpDibBuffer=NULL;
	JpegDibBuffer=NULL;
	JpegFileName="";
	BmpFileName="";
	Bmp2JpegFileName="";
	m_Q.SelectString(-1,"100");

	// 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
   //////////////////////////////////////////////////////////////////////////
   //设置按钮风格
		m_Exit.SetIcon(IDI_ICONCLOSE, (int)BTNST_AUTO_GRAY);
		m_Exit.SetPlaySound(true,"IDR_WAVE1");
		m_Exit.DrawBorder(FALSE); 
		m_Exit.SetColor(CButtonST::BTNST_COLOR_BK_OUT, RGB(80,120,200)); 
		m_Exit.SetColor(CButtonST::BTNST_COLOR_BK_IN, RGB(80,120,200)); 
		m_Exit.SetColor(CButtonST::BTNST_COLOR_BK_FOCUS, RGB(80,120,200)); 
        m_Exit.SetTooltipText(_T("退出程序"));

		m_OpenJpeg.SetIcon(IDI_JPEG, (int)BTNST_AUTO_GRAY);
        m_OpenJpeg.SetPlaySound(true,"IDR_WAVE1");
		m_OpenJpeg.DrawBorder(FALSE); 
		m_OpenJpeg.SetColor(CButtonST::BTNST_COLOR_BK_OUT, RGB(80,120,200)); 
		m_OpenJpeg.SetColor(CButtonST::BTNST_COLOR_BK_IN, RGB(80,120,200)); 
		m_OpenJpeg.SetColor(CButtonST::BTNST_COLOR_BK_FOCUS, RGB(80,120,200)); 
        m_OpenJpeg.SetTooltipText(_T("浏览JPEG格式的图片"));

		m_ReadBmp.SetIcon(IDI_BMP, (int)BTNST_AUTO_GRAY);
		m_ReadBmp.SetPlaySound(true,"IDR_WAVE1");
		m_ReadBmp.DrawBorder(FALSE); 
		m_ReadBmp.SetColor(CButtonST::BTNST_COLOR_BK_OUT, RGB(80,120,200)); 
		m_ReadBmp.SetColor(CButtonST::BTNST_COLOR_BK_IN, RGB(80,120,200)); 
		m_ReadBmp.SetColor(CButtonST::BTNST_COLOR_BK_FOCUS, RGB(80,120,200)); 
        m_ReadBmp.SetTooltipText(_T("读取Bmp格式的图象文件"));

		m_About.SetIcon(IDI_ABOUT, (int)BTNST_AUTO_GRAY);
		m_About.SetPlaySound(true,"IDR_WAVE1");
		m_About.DrawBorder(FALSE); 
		m_About.SetColor(CButtonST::BTNST_COLOR_BK_OUT, RGB(80,120,200)); 
		m_About.SetColor(CButtonST::BTNST_COLOR_BK_IN, RGB(80,120,200)); 
		m_About.SetColor(CButtonST::BTNST_COLOR_BK_FOCUS, RGB(80,120,200)); 
        m_About.SetTooltipText(_T("关于程序以及作者"));

		m_Trans.SetIcon(IDI_TRANS, (int)BTNST_AUTO_GRAY);	
		m_Trans.SetPlaySound(true,"IDR_WAVE1");
		m_Trans.DrawBorder(FALSE); 
		m_Trans.SetColor(CButtonST::BTNST_COLOR_BK_OUT, RGB(80,120,200)); 
		m_Trans.SetColor(CButtonST::BTNST_COLOR_BK_IN, RGB(80,120,200)); 
		m_Trans.SetColor(CButtonST::BTNST_COLOR_BK_FOCUS, RGB(80,120,200)); 
        m_Trans.SetTooltipText(_T("将Bmp格式的图片压缩为JPEG格式"));

	CSplashWnd::ShowSplashScreen( this); 
	Sleep(2000);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CJPEG_PRODlg::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 CJPEG_PRODlg::OnPaint() 
{

		CDC* pDC=GetDC();
	
	if (BmpDib) {              //如果图像为非空的那么显示

		pDC->SetStretchBltMode(HALFTONE);
		BmpDib->Paste(pDC,26,50,337,337, SRCCOPY);
	}
	if (JpegDib) {              //如果图像为非空的那么显示

		pDC->SetStretchBltMode(HALFTONE);
		JpegDib->Paste(pDC,458,50,337,337, SRCCOPY);
	}

	else
	{NULL;}
	
	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
	{
		CDialog::OnPaint();
	}


}

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

void CJPEG_PRODlg::OnButtonRead() 
{
	// TODO: Add your control notification handler code here
  	char szExt[] = "图像文件(*.bmp;)|*.bmp;||";
	CFileDialog dlg(TRUE, NULL, NULL, 
		OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, 
		szExt);
	
	if(dlg.DoModal() == IDOK)    //读入一个新的文件
	{
		BmpFileName=dlg.GetPathName();
    if (BmpDib) {
		BmpDib->DestroyDIB();
	}
	BmpDib=new CDIBDC;
	BmpDib->Load(BmpFileName);
	}

    else
	{
	 NULL;
	}
Invalidate(FALSE);	
	
}
//////////////////////////////////////////////////////////////////////////
//JPEG转换的函数
void CJPEG_PRODlg::OnButtonTrans() 
{
	// TODO: Add your control notification handler code here
    if (BmpFileName=="") {
		MessageBox("还没有读入位图文件！");
		return;
    }

	char szExt[] = "图像文件(*.jpg;)|*.jpg;|所有文件(*.*)|*.*||";
	CFileDialog dlg(FALSE, NULL, NULL, 
		OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, 
		szExt);
	UpdateData(FALSE);
	JPEG_CODE Jcode;
    Q=(5-m_Q.GetCurSel())*20;
	if(dlg.DoModal() == IDOK)    //转换文件
	{
		
     Bmp2JpegFileName=dlg.GetPathName();
	 if (Bmp2JpegFileName.Find(".jpg")<0) {
		 Bmp2JpegFileName=Bmp2JpegFileName+".jpg";
	 }

    string s1(BmpFileName),s2(Bmp2JpegFileName);
	Jcode.Invoke(s1, s2,Q);        //进行Jpeg的压缩编码
    if (JpegDib) {
		JpegDib->DestroyDIB();
	}
	JpegDib=new CDIBDC;
	JpegDib->Load(Bmp2JpegFileName);

	}
	else
		NULL;
	
	Invalidate(FALSE);
}

void CJPEG_PRODlg::OnButtonOpenjpeg() 
{
	// TODO: Add your control notification handler code here
	// TODO: Add your control notification handler code here
  	char szExt[] = "图像文件(*.jpg;)|*.jpg;|图像文件(*.bmp;*.jpg;*.gif;*.png;*.ico)|*.bmp;*.jpg;*.gif;*.png;*.ico|所有文件(*.*)|*.*||";
	CFileDialog dlg(TRUE, NULL, NULL, 
		OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT, 
		szExt);
	
	if(dlg.DoModal() == IDOK)    //读入一个新的文件
	{
		JpegFileName=dlg.GetPathName();
    if (JpegDib) {
		JpegDib->DestroyDIB();
	}
	JpegDib=new CDIBDC;
	JpegDib->Load(JpegFileName);
	}

    else
	{
	 NULL;
	}
Invalidate(FALSE);		
}

void CJPEG_PRODlg::OnButtonExit() 
{
	// TODO: Add your control notification handler code here
	OnOK();
}

void CJPEG_PRODlg::OnButtonAbout() 
{
	// TODO: Add your control notification handler code here
	CAboutDlg dlg;
	dlg.DoModal();
}