window_w32.cpp

这个是基于在CCS开发环境下

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#include "_highgui.h"

#if defined WIN32 || defined WIN64

#if _MSC_VER >= 1200
#pragma warning( disable: 4710 )
#endif

#include <commctrl.h>
#include <winuser.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>

static const char* trackbar_text =
"                                                                                             ";

#if defined WIN64 || defined EM64T

#define icvGetWindowLongPtr GetWindowLongPtr
#define icvSetWindowLongPtr( hwnd, id, ptr ) SetWindowLongPtr( hwnd, id, (LONG_PTR)(ptr) )
#define icvGetClassLongPtr  GetClassLongPtr

#define CV_USERDATA GWLP_USERDATA
#define CV_WNDPROC GWLP_WNDPROC
#define CV_HCURSOR GCLP_HCURSOR
#define CV_HBRBACKGROUND GCLP_HBRBACKGROUND

#else

#define icvGetWindowLongPtr GetWindowLong
#define icvSetWindowLongPtr( hwnd, id, ptr ) SetWindowLong( hwnd, id, (size_t)ptr )
#define icvGetClassLongPtr GetClassLong

#define CV_USERDATA GWL_USERDATA
#define CV_WNDPROC GWL_WNDPROC
#define CV_HCURSOR GCL_HCURSOR
#define CV_HBRBACKGROUND GCL_HBRBACKGROUND

#endif

void  FillBitmapInfo( BITMAPINFO* bmi, int width, int height, int bpp, int origin )
{
    assert( bmi && width >= 0 && height >= 0 && (bpp == 8 || bpp == 24 || bpp == 32));

    BITMAPINFOHEADER* bmih = &(bmi->bmiHeader);

    memset( bmih, 0, sizeof(*bmih));
    bmih->biSize = sizeof(BITMAPINFOHEADER);
    bmih->biWidth = width;
    bmih->biHeight = origin ? abs(height) : -abs(height);
    bmih->biPlanes = 1;
    bmih->biBitCount = (unsigned short)bpp;
    bmih->biCompression = BI_RGB;

    if( bpp == 8 )
    {
        RGBQUAD* palette = bmi->bmiColors;
        int i;
        for( i = 0; i < 256; i++ )
        {
            palette[i].rgbBlue = palette[i].rgbGreen = palette[i].rgbRed = (BYTE)i;
            palette[i].rgbReserved = 0;
        }
    }
}

struct CvWindow;

typedef struct CvTrackbar
{
    int signature;
    HWND hwnd;
    char* name;
    CvTrackbar* next;
    CvWindow* parent;
    HWND buddy;
    int* data;
    int pos;
    int maxval;
    void (*notify)(int);
    int id;
}
CvTrackbar;


typedef struct CvWindow
{
    int signature;
    HWND hwnd;
    char* name;
    CvWindow* prev;
    CvWindow* next;
    HWND frame;

    HDC dc;
    HGDIOBJ image;
    int last_key;
    int flags;

    CvMouseCallback on_mouse;
    void* on_mouse_param;

    struct
    {
        HWND toolbar;
        int pos;
        int rows;
        WNDPROC toolBarProc;
        CvTrackbar* first;
    }
    toolbar;
}
CvWindow;


#define HG_BUDDY_WIDTH  130

#ifndef TBIF_SIZE
    #define TBIF_SIZE  0x40
#endif

#ifndef TB_SETBUTTONINFO
    #define TB_SETBUTTONINFO (WM_USER + 66)
#endif

#ifndef TBM_GETTOOLTIPS
    #define TBM_GETTOOLTIPS  (WM_USER + 30)
#endif

static LRESULT CALLBACK HighGUIProc(  HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
static LRESULT CALLBACK WindowProc(  HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
static LRESULT CALLBACK MainWindowProc(  HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
static void icvUpdateWindowPos( CvWindow* window );

static CvWindow* hg_windows = 0;
static CvWin32WindowCallback hg_on_preprocess = 0, hg_on_postprocess = 0;
static HINSTANCE hg_hinstance = 0;

static void icvCleanupHighgui()
{
    cvDestroyAllWindows();
}

CV_IMPL int cvInitSystem( int, char** )
{
    static int wasInitialized = 0;

    // check initialization status
    if( !wasInitialized )
    {
        // Initialize the stogare
        hg_windows = 0;

        // Register the class
        WNDCLASS wndc;
        wndc.style = CS_OWNDC | CS_VREDRAW | CS_HREDRAW;
        wndc.lpfnWndProc = WindowProc;
        wndc.cbClsExtra = 0;
        wndc.cbWndExtra = 0;
        wndc.hInstance = hg_hinstance;
        wndc.lpszClassName = "HighGUI class";
        wndc.lpszMenuName = "HighGUI class";
        wndc.hIcon = LoadIcon(0, IDI_APPLICATION);
        wndc.hCursor = (HCURSOR)LoadCursor(0, (LPSTR)(size_t)IDC_CROSS );
        wndc.hbrBackground = (HBRUSH)GetStockObject(GRAY_BRUSH);

        RegisterClass(&wndc);

        wndc.lpszClassName = "Main HighGUI class";
        wndc.lpszMenuName = "Main HighGUI class";
        wndc.hbrBackground = (HBRUSH)GetStockObject(GRAY_BRUSH);
        wndc.lpfnWndProc = MainWindowProc;

        RegisterClass(&wndc);
        atexit( icvCleanupHighgui );

        wasInitialized = 1;
    }

    return 0;
}

CV_IMPL int cvStartWindowThread(){
    return 0;
}

static CvWindow* icvFindWindowByName( const char* name )
{
    CvWindow* window = hg_windows;

    for( ; window != 0 && strcmp( name, window->name) != 0; window = window->next )
        ;

    return window;
}


static CvWindow* icvWindowByHWND( HWND hwnd )
{
    CvWindow* window = (CvWindow*)icvGetWindowLongPtr( hwnd, CV_USERDATA );
    return window != 0 && hg_windows != 0 &&
           window->signature == CV_WINDOW_MAGIC_VAL ? window : 0;
}


static CvTrackbar* icvTrackbarByHWND( HWND hwnd )
{
    CvTrackbar* trackbar = (CvTrackbar*)icvGetWindowLongPtr( hwnd, CV_USERDATA );
    return trackbar != 0 && trackbar->signature == CV_TRACKBAR_MAGIC_VAL &&
           trackbar->hwnd == hwnd ? trackbar : 0;
}


static const char* icvWindowPosRootKey = "Software\\OpenCV\\HighGUI\\Windows\\";

// Window positions saving/loading added by Philip Gruebele.
//<a href="mailto:[e-mail]">[e-mail]</a>
// Restores the window position from the registry saved position.
static void
icvLoadWindowPos( const char* name, CvRect& rect )
{
    HKEY hkey;
    char szKey[1024];
    strcpy( szKey, icvWindowPosRootKey );
    strcat( szKey, name );

    rect.x = rect.y = CW_USEDEFAULT;
    rect.width = rect.height = 320;

    if( RegOpenKeyEx(HKEY_CURRENT_USER,szKey,0,KEY_QUERY_VALUE,&hkey) == ERROR_SUCCESS )
    {
        // Yes we are installed.
        DWORD dwType = 0;
        DWORD dwSize = sizeof(int);

        RegQueryValueEx(hkey, "Left", NULL, &dwType, (BYTE*)&rect.x, &dwSize);
        RegQueryValueEx(hkey, "Top", NULL, &dwType, (BYTE*)&rect.y, &dwSize);
        RegQueryValueEx(hkey, "Width", NULL, &dwType, (BYTE*)&rect.width, &dwSize);
        RegQueryValueEx(hkey, "Height", NULL, &dwType, (BYTE*)&rect.height, &dwSize);

        if( rect.x != (int)CW_USEDEFAULT && (rect.x < -200 || rect.x > 3000) )
            rect.x = 100;
        if( rect.y != (int)CW_USEDEFAULT && (rect.y < -200 || rect.y > 3000) )
            rect.y = 100;

        if( rect.width != (int)CW_USEDEFAULT && (rect.width < 0 || rect.width > 3000) )
            rect.width = 100;
        if( rect.height != (int)CW_USEDEFAULT && (rect.height < 0 || rect.height > 3000) )
            rect.height = 100;

        RegCloseKey(hkey);
    }
}


// Window positions saving/loading added by Philip Gruebele.
//<a href="mailto:[e-mail]">[e-mail]</a>
// philipg.  Saves the window position in the registry
static void
icvSaveWindowPos( const char* name, CvRect rect )
{
    static const DWORD MAX_RECORD_COUNT = 100;
    HKEY hkey;
    char szKey[1024];
    char rootKey[1024];
    strcpy( szKey, icvWindowPosRootKey );
    strcat( szKey, name );
    
    if( RegOpenKeyEx( HKEY_CURRENT_USER,szKey,0,KEY_READ,&hkey) != ERROR_SUCCESS )
    {
        HKEY hroot;
        DWORD count = 0;
        FILETIME oldestTime = { UINT_MAX, UINT_MAX };
        char oldestKey[1024];
        char currentKey[1024];

        strcpy( rootKey, icvWindowPosRootKey );
        rootKey[strlen(rootKey)-1] = '\0';
        if( RegCreateKeyEx(HKEY_CURRENT_USER, rootKey, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_READ+KEY_WRITE, 0, &hroot, NULL) != ERROR_SUCCESS )
            //RegOpenKeyEx( HKEY_CURRENT_USER,rootKey,0,KEY_READ,&hroot) != ERROR_SUCCESS )
            return;

        for(;;)
        {
            DWORD csize = sizeof(currentKey);
            FILETIME accesstime = { 0, 0 };
            LONG code = RegEnumKeyEx( hroot, count, currentKey, &csize, NULL, NULL, NULL, &accesstime );
            if( code != ERROR_SUCCESS && code != ERROR_MORE_DATA )
                break;
            count++;
            if( oldestTime.dwHighDateTime > accesstime.dwHighDateTime ||
                oldestTime.dwHighDateTime == accesstime.dwHighDateTime &&
                oldestTime.dwLowDateTime > accesstime.dwLowDateTime )
            {
                oldestTime = accesstime;
                strcpy( oldestKey, currentKey );
            }
        }

        if( count >= MAX_RECORD_COUNT )
            RegDeleteKey( hroot, oldestKey );
        RegCloseKey( hroot );

        if( RegCreateKeyEx(HKEY_CURRENT_USER,szKey,0,NULL,REG_OPTION_NON_VOLATILE, KEY_WRITE, 0, &hkey, NULL) != ERROR_SUCCESS )
            return;
    }
    else
    {
        RegCloseKey( hkey );
        if( RegOpenKeyEx( HKEY_CURRENT_USER,szKey,0,KEY_WRITE,&hkey) != ERROR_SUCCESS )
            return;
    }
    
    RegSetValueEx(hkey, "Left", 0, REG_DWORD, (BYTE*)&rect.x, sizeof(rect.x));
    RegSetValueEx(hkey, "Top", 0, REG_DWORD, (BYTE*)&rect.y, sizeof(rect.y));
    RegSetValueEx(hkey, "Width", 0, REG_DWORD, (BYTE*)&rect.width, sizeof(rect.width));
    RegSetValueEx(hkey, "Height", 0, REG_DWORD, (BYTE*)&rect.height, sizeof(rect.height));
    RegCloseKey(hkey);
}


CV_IMPL int cvNamedWindow( const char* name, int flags )
{
    int result = 0;
    CV_FUNCNAME( "cvNamedWindow" );

    __BEGIN__;

    HWND hWnd, mainhWnd;
    CvWindow* window;
    DWORD defStyle = WS_VISIBLE | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_SYSMENU;
    int len;
    CvRect rect;

    cvInitSystem(0,0);

    if( !name )
        CV_ERROR( CV_StsNullPtr, "NULL name string" );

    // Check the name in the storage
    if( icvFindWindowByName( name ) != 0 )
    {
        result = 1;
        EXIT;
    }

    if( (flags & CV_WINDOW_AUTOSIZE) == 0 )
        defStyle |= WS_SIZEBOX;

    icvLoadWindowPos( name, rect );

    mainhWnd = CreateWindow( "Main HighGUI class", name, defStyle | WS_OVERLAPPED,
                             rect.x, rect.y, rect.width, rect.height, 0, 0, hg_hinstance, 0 );
    if( !mainhWnd )
        CV_ERROR( CV_StsError, "Frame window can not be created" );

    ShowWindow(mainhWnd, SW_SHOW);

    hWnd = CreateWindow("HighGUI class", "", defStyle | WS_CHILD | WS_SIZEBOX,
                        CW_USEDEFAULT, 0, rect.width, rect.height, mainhWnd, 0, hg_hinstance, 0);
    if( !hWnd )
        CV_ERROR( CV_StsError, "Frame window can not be created" );

    ShowWindow(hWnd, SW_SHOW);

    len = (int)strlen(name);
    CV_CALL( window = (CvWindow*)cvAlloc(sizeof(CvWindow) + len + 1));

    window->signature = CV_WINDOW_MAGIC_VAL;
    window->hwnd = hWnd;
    window->frame = mainhWnd;
    window->name = (char*)(window + 1);
    memcpy( window->name, name, len + 1 );
    window->flags = flags;
    window->image = 0;
    window->dc = CreateCompatibleDC(0);
    window->last_key = 0;

    window->on_mouse = 0;
    window->on_mouse_param = 0;

    memset( &window->toolbar, 0, sizeof(window->toolbar));

    window->next = hg_windows;
    window->prev = 0;
    if( hg_windows )
        hg_windows->prev = window;
    hg_windows = window;
    icvSetWindowLongPtr( hWnd, CV_USERDATA, window );
    icvSetWindowLongPtr( mainhWnd, CV_USERDATA, window );

    // Recalculate window position
    icvUpdateWindowPos( window );

    result = 1;
    __END__;

    return result;
}


static void icvRemoveWindow( CvWindow* window )
{
    CvTrackbar* trackbar;
    RECT wrect;

    GetWindowRect( window->frame, &wrect );
    icvSaveWindowPos( window->name, cvRect(wrect.left, wrect.top,
        wrect.right-wrect.left, wrect.bottom-wrect.top) );

    icvSetWindowLongPtr( window->hwnd, CV_USERDATA, 0 );
    icvSetWindowLongPtr( window->frame, CV_USERDATA, 0 );

    if( window->prev )
        window->prev->next = window->next;
    else
        hg_windows = window->next;

    if( window->next )
        window->next->prev = window->prev;

    window->prev = window->next = 0;

    if( window->image )
        DeleteObject(SelectObject(window->dc,window->image));

    if( window->dc )
        DeleteDC(window->dc);

    for( trackbar = window->toolbar.first; trackbar != 0; )
    {
        CvTrackbar* next = trackbar->next;
        icvSetWindowLongPtr( trackbar->hwnd, CV_USERDATA, 0 );
        cvFree( &trackbar );
        trackbar = next;
    }

    cvFree( &window );
}


CV_IMPL void cvDestroyWindow( const char* name )
{
    CV_FUNCNAME( "cvDestroyWindow" );

    __BEGIN__;

    CvWindow* window;
    HWND mainhWnd;

    if(!name)
        CV_ERROR( CV_StsNullPtr, "NULL name string" );

    window = icvFindWindowByName( name );
    if( !window )
        EXIT;

    mainhWnd = window->frame;

    SendMessage(window->hwnd, WM_CLOSE, 0, 0);
    SendMessage( mainhWnd, WM_CLOSE, 0, 0);
    // Do NOT call _remove_window -- CvWindow list will be updated automatically ...

    __END__;
}


static void icvScreenToClient( HWND hwnd, RECT* rect )