/*

 * =====================================================================================

 *

 *       Filename:  a-kind-of-showDlg.cpp

 *

 *    Description:  不使用CvvImage类来在MFC中显示图像

 *

 *

 *        Version:  1.0

 *        Created:  2013/11/16 22:06:13

 *         Author:  yuliyang

 *

 *             Mail:  wzyuliyang911@gmail.com

 *             Blog:  http://www.cnblogs.com/yuliyang

 *

 * =====================================================================================

 */

// a-kind-of-showDlg.cpp : 实现文件

//

#include "stdafx.h"

#include "a-kind-of-show.h"

#include "a-kind-of-showDlg.h"

#include "afxdialogex.h"

#ifdef _DEBUG

#define new DEBUG_NEW

#endif

static     DWORD  Thread(LPVOID *lpvParam);        /* 显示图像线程 */

// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

class CAboutDlg : public CDialogEx

{

public:

    CAboutDlg();

// 对话框数据

    enum { IDD = IDD_ABOUTBOX };

    protected:

    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

// 实现

protected:

    DECLARE_MESSAGE_MAP()

};

CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)

{

}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)

{

    CDialogEx::DoDataExchange(pDX);

}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)

END_MESSAGE_MAP()

// CakindofshowDlg 对话框

CakindofshowDlg::CakindofshowDlg(CWnd* pParent /*=NULL*/)

    : CDialogEx(CakindofshowDlg::IDD, pParent)

{

    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

}

void CakindofshowDlg::DoDataExchange(CDataExchange* pDX)

{

    CDialogEx::DoDataExchange(pDX);

}

BEGIN_MESSAGE_MAP(CakindofshowDlg, CDialogEx)

    ON_WM_SYSCOMMAND()

    ON_WM_PAINT()

    ON_WM_QUERYDRAGICON()

    ON_BN_CLICKED(IDC_BUTTON1, &CakindofshowDlg::OnBnClickedButton1)

    ON_BN_CLICKED(IDC_BUTTON2, &CakindofshowDlg::OnBnClickedButton2)

END_MESSAGE_MAP()

// CakindofshowDlg 消息处理程序

BOOL CakindofshowDlg::OnInitDialog()

{

    CDialogEx::OnInitDialog();

    // 将“关于...”菜单项添加到系统菜单中。

    // IDM_ABOUTBOX 必须在系统命令范围内。

    ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);

    ASSERT(IDM_ABOUTBOX < 0xF000);

    CMenu* pSysMenu = GetSystemMenu(FALSE);

    if (pSysMenu != NULL)

    {

        BOOL bNameValid;

        CString strAboutMenu;

        bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);

        ASSERT(bNameValid);

        if (!strAboutMenu.IsEmpty())

        {

            pSysMenu->AppendMenu(MF_SEPARATOR);

            pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);

        }

    }

    // 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动

    //  执行此操作

    SetIcon(m_hIcon, TRUE);            // 设置大图标

    SetIcon(m_hIcon, FALSE);        // 设置小图标

    // TODO: 在此添加额外的初始化代码

    /*------------------------------------------------------------------------------------------------------------

     *  初始化

     *

     *  显示图像 另一种方法

     *

     *

     *------------------------------------------------------------------------------------------------------------*/

    cv::namedWindow("INPUT", 1);

    HWND hWnd = (HWND) cvGetWindowHandle("INPUT");

    HWND hParent = ::GetParent(hWnd);

    ::SetParent(hWnd, GetDlgItem(IDC_FRAME)->m_hWnd);

    ::ShowWindow(hParent, SW_HIDE);

    return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE

}

void CakindofshowDlg::OnSysCommand(UINT nID, LPARAM lParam)

{

    if ((nID & 0xFFF0) == IDM_ABOUTBOX)

    {

        CAboutDlg dlgAbout;

        dlgAbout.DoModal();

    }

    else

    {

        CDialogEx::OnSysCommand(nID, lParam);

    }

}

// 如果向对话框添加最小化按钮，则需要下面的代码

//  来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，

//  这将由框架自动完成。

void CakindofshowDlg::OnPaint()

{

    if (IsIconic())

    {

        CPaintDC dc(this); // 用于绘制的设备上下文

        SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

        // 使图标在工作区矩形中居中

        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;

        // 绘制图标

        dc.DrawIcon(x, y, m_hIcon);

    }

    else

    {

        CDialogEx::OnPaint();

    }

}

//当用户拖动最小化窗口时系统调用此函数取得光标

//显示。

HCURSOR CakindofshowDlg::OnQueryDragIcon()

{

    return static_cast<HCURSOR>(m_hIcon);

}

void CakindofshowDlg::OnBnClickedButton1()

{

    thread = AfxBeginThread((AFX_THREADPROC)  Thread, (LPVOID) this);

    // TODO: 在此添加控件通知处理程序代码

}

void CakindofshowDlg::ThreadProcess(void)

{

    capture = cvCaptureFromCAM(0);

    if(!capture)

    {

        //AfxMessageBox(L"ERROR: Cannot initialize video!");

        return;

    }

    cv::Size default_size;

    default_size.width = 280;                   /* 窗口大小 */

    default_size.height = 210;

    IplImage* frame;

    cv::Mat img_input;

    while (1)

    {

        cv::Mat img_input_aux;

        frame = cvQueryFrame(capture);

        img_input = cv::Mat(frame,true);

        cv::resize(img_input, img_input_aux, default_size);

        if(!img_input_aux.empty())

            cv::imshow("INPUT", img_input_aux);

        ::Sleep(1000);                          /* 代替waitkey() */

    }

}

 static DWORD  Thread(LPVOID *lpvParam)

{

    CakindofshowDlg *thr = (CakindofshowDlg*) lpvParam;

    thr->ThreadProcess();

    return NULL;

}

/*------------------------------------------------------------------------------------------------------------

 *  停止线程

 *------------------------------------------------------------------------------------------------------------*/

 void CakindofshowDlg::StopThread(void)

 {

     DWORD exit_code = NULL;

     if(thread != NULL)

     {

         GetExitCodeThread(thread->m_hThread, &exit_code);

         if(exit_code == STILL_ACTIVE)

         {

             ::TerminateThread(thread->m_hThread, 0);

             CloseHandle(thread->m_hThread);

         }

         thread->m_hThread = NULL;

         thread = NULL;

     }

 }

 void CakindofshowDlg::OnBnClickedButton2()

 {

     // TODO: 在此添加控件通知处理程序代码

     CakindofshowDlg::StopThread();

 }