汉字的显示

#include
#include
#include
#include
#include "SDL.h"
#include "SDL_image.h"

//---------------------------------------------------------------------------
#define STDOUT_FILE "stdout.txt"
#define STDERR_FILE "stderr.txt"

SDL_Surface *screen;
Uint32 fps;
Uint32 AppStartTime = 0;
Uint32 frame_count = 0;
static Uint32 frames;

SDL_Event event;
SDL_Surface * SetMode( int Width, int Height, int BPP, int Flags );
SDL_Surface * LoadBMP( char * filename );
void MainLoops( int ( * EventFunc)( ), void ( * DrawFunc )( ), int DelayTime );
void Blt( SDL_Surface * image, int x, int y );
void TileBlt( SDL_Surface * image, int x, int y );
void SetTransparentColor( SDL_Surface * sprite, int R, int G, int B );
void IoRedirect( );
void cleanup_output( );
void initfps();

//---------------------------------------------------------------------------
Uint8 HZK12[574560];
Uint8 HZK14[670320];
Uint8 HZK16[766080];
bool HZ_Init();
bool HZ_TextOut( SDL_Surface * image, int x, int y, int width, int space, const char * str );
//---------------------------------------------------------------------------

int ProcessEvent( );
void DrawFrame( );

SDL_Surface * bg, * font;
int ix, iy, jx, jy;
int Width = 640;
int Height = 480;
int bpp = 16;
int ScreenMode = 0;

int main()
{
    char TimeString[256];
    time_t timer;
    struct tm *tblock;

    HZ_Init();

    frames = 0;
    timer = time(NULL);
    tblock = localtime(&timer);
    strftime( TimeString, 256, "Time=%Z: %Y-%m-%d %a %H:%M:%S", tblock );
    printf( "%s\n", TimeString );

    SetMode( Width, Height, bpp, SDL_SWSURFACE|ScreenMode );
    SDL_ShowCursor(0);
    SDL_WM_SetCaption( "demo", "demo" );

    bg = IMG_Load( "2k_bg.jpg" );

    ix=iy=0;
    jx=jy= Height>>1;
    srand( (Uint32)timer );
    MainLoops( ProcessEvent, DrawFrame, 0 );
    printf( "ScreenMode=%d*%d*%d\nFPS=%u", Width, Height, bpp, fps );

    return 0;
}

int ProcessEvent( )
{
    Uint8 *keystate;

    keystate = SDL_GetKeyState( NULL );
    if ( ( keystate[SDLK_ESCAPE] ) || ( keystate[SDLK_q] ) )
        return 0;

    return 1;
}

void DrawFrame( )
{
    char tmp[256];
    int step = 4;

    //
    sprintf( tmp, "TotalFrame=%u", frames );

    TileBlt( bg, 0, 0 );

 

    if ( rand( ) % 400 < 2 )
    {
        jx = rand( ) % ( Width - 10 );
        jy = rand( ) % ( Height - 10 );
    }

    sprintf( tmp, "FPS=%d", fps );
 
    HZ_TextOut( screen, 10, 300, 12, 0, "正面面板");
    HZ_TextOut( screen, 10, 318, 12, 0, "电子对抗显示" );
    HZ_TextOut( screen, 10, 334, 12, 0, "陈青山" );
    HZ_TextOut( screen , 10, 380, 12, 0, "高度表 ");

    ix += step;
    iy += step;
}
//---------------------------------------------------------------------------

//---------------------------------------------------------------------------
SDL_Surface * SetMode( int Width, int Height, int BPP, int Flags )
{
    /* Initialize the SDL library */
    if ( SDL_Init( SDL_INIT_VIDEO ) < 0 )
    {
        fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError( ) );
        return NULL;
    }

    /* Clean up on exit */
    atexit(SDL_Quit);

    /* Initialize the display in a 640x480 8-bit palettized mode */
    screen = SDL_SetVideoMode( Width, Height, BPP, Flags );
    if ( screen == NULL )
    {
        fprintf( stderr, "Couldn't set %dx%dx%d video mode: %s\n", Width, Height, BPP, SDL_GetError( ) );
    }

    return screen;
}
//---------------------------------------------------------------------------

void initfps( )
{
    AppStartTime = SDL_GetTicks();
    frame_count = 0;
}
//---------------------------------------------------------------------------

void MainLoops( int ( * EventFunc)( ), void ( * DrawFunc)( ), int DelayTime )
{
    if ( EventFunc&&DrawFunc )
    {
        memset( &event, 0, sizeof( SDL_Event ) );
        initfps( );

        while( EventFunc( ) )
        {
            SDL_PollEvent(&event);
            if ( event.type == SDL_ACTIVEEVENT )
            {
                if ( ( ( event.active.state & SDL_APPACTIVE ) == false ) ||
( event.active.gain == false ) )
                    initfps( );
            }
            SDL_PumpEvents();
     DrawFunc();
            SDL_UpdateRect(screen,0, 0, 0, 0);
            frame_count ++;
            frames ++;
            fps = frame_count * 1000 / ( SDL_GetTicks( ) - AppStartTime );
            if ( DelayTime ) SDL_Delay( DelayTime );
        }
    }
}
//---------------------------------------------------------------------------

SDL_Surface * LoadBMP( char * filename )
{
    SDL_Surface * imagebmp, * image;

    imagebmp = SDL_LoadBMP( filename );
    if ( imagebmp == NULL )
        return NULL;

    if ( imagebmp->format->palette != NULL )
    {
        SDL_SetColors( screen, imagebmp->format->palette->colors, 0, imagebmp->format->palette->ncolors );
    }

    /* Convert the image to the video format (maps colors) */
    image = SDL_DisplayFormat( imagebmp );
    SDL_FreeSurface( imagebmp );

    return image;
}
//---------------------------------------------------------------------------

void Blt( SDL_Surface * image, int x, int y )
{
    int Row, Col, r, c, shiftx, shifty;
    SDL_Rect dest, src;

    /* out of screen */
    if ( ( x > screen->w ) || ( y > screen->h ) ||
( x + image->w < 1 ) || ( y + image->h < 1 ) )
        return;

    src.x = 0;
    src.y = 0;
    src.w = image->w;
    src.h = image->h;
    dest.x = x;
    dest.y = y;
    dest.w = src.w;
    if ( y < 0 )
    {
        src.y = 0 - y;
        src.h = image->h + src.y;
        dest.y = 0;
    }
    dest.h = src.h;

    SDL_BlitSurface( image, &src, screen, &dest );
}
//---------------------------------------------------------------------------

void TileBlt( SDL_Surface * image, int x, int y )
{
    int Row, Col, r, c, shiftx, shifty;
    SDL_Rect dest, src;

    shiftx = x % image->w;
    shifty = y % image->h;

    if ( shiftx >0 ) shiftx -= image->w;
    if ( shifty >0 ) shifty -= image->h;

    Row = screen->h / image->h + 2;
    Col = screen->w / image->w + 2;

    dest.x = 0;
    dest.y = 0;
    dest.w = image->w;
    dest.h = image->h;
    src.x = 0;
    src.y = 0;
    src.w = image->w;
    src.h = image->h;

    for ( r = 0; r < Row; r ++ )
    {
        if ( r )
        {
            src.y = 0;
            src.h = image->h;
            dest.h = image->h;
            dest.y = image->h * r + shifty;
        }
        else
        { /* first line ? */
            src.y = 0 - shifty;
            src.h = image->h;
            dest.h = image->h + shifty;
            dest.y = 0;
        }

        for ( c = 0; c < Col; c ++ )
        {
            dest.x = image->w * c + shiftx;
            SDL_BlitSurface( image, &src, screen, &dest );
        }
    }
}
//---------------------------------------------------------------------------

void SetTransparentColor( SDL_Surface * sprite, int R, int G, int B )
{
    SDL_SetColorKey( sprite, SDL_SRCCOLORKEY|SDL_RLEACCEL, SDL_MapRGB( sprite->format, R, G, B ) );
}
//---------------------------------------------------------------------------

/* Remove the output files if there was no output written */
void cleanup_output( )
{
    FILE *file;
    int empty;

    /* Flush the output in case anything is queued */
    fclose(stdout);
    fclose(stderr);

    /* See if the files have any output in them */
    file = fopen(STDOUT_FILE, "rb");
    if ( file )
    {
        empty = (fgetc(file) == EOF) ? 1 : 0;
        fclose(file);
        if ( empty )
            remove(STDOUT_FILE);
    }
    file = fopen(STDERR_FILE, "rb");
    if ( file )
    {
        empty = (fgetc(file) == EOF) ? 1 : 0;
        fclose(file);
        if ( empty )
            remove(STDERR_FILE);
    }
}
//---------------------------------------------------------------------------

void IoRedirect( )
{
    FILE *newfp;

    /* Redirect standard standard output */
    newfp = freopen(STDOUT_FILE, "w", stdout);
    if ( newfp == NULL )
    { /* This happens on NT */
#if !defined(stdout)
        stdout = fopen(STDOUT_FILE, "w");
#else
        newfp = fopen(STDOUT_FILE, "w");
        if ( newfp ) *stdout = *newfp;
#endif
    }

    /* Redirect standard standard error */
    newfp = freopen(STDERR_FILE, "w", stderr);
    if ( newfp == NULL )
    { /* This happens on NT */
#if !defined(stderr)
        stderr = fopen(STDERR_FILE, "w");
#else
        newfp = fopen(STDERR_FILE, "w");
        if ( newfp ) *stderr = *newfp;
#endif
    }

    setvbuf(stdout, NULL, _IOLBF, BUFSIZ); /* Line buffered */
    setbuf(stderr, NULL); /* No buffering */
    atexit(cleanup_output);
}
//---------------------------------------------------------------------------

bool HZ_Init()
{
    FILE * file;
    int num=0;
    if((file = fopen( "./HZK16", "rb" ))==NULL)
    {
 printf("open HZK16 error!\n");
 return false;
     }

    num=fread( HZK16, 32, 0x5d84, file );
    printf("num ---> %d\n", num);
    fclose( file );

    file = fopen( "./HZK12", "rb" );
    fread( HZK12, 24, 0x5d84, file );
    fclose( file );

    return true;
}
//---------------------------------------------------------------------------

bool HZ_TextOut( SDL_Surface * image, int x, int y, int width, int space, const char * str )
{
    Uint8 * bufptr;
    Uint8 * HZK;
    Uint16 Bits[16];
    int i,j,k, m, offset = 0;
    unsigned char q;
    unsigned char w;

    switch ( width )
    {
    case 12:
        HZK = HZK12;
        break;
  
    case 16:
        HZK = HZK16;
        break;
    default:
        return false;
    }
    bufptr = (unsigned char*)image->pixels;

    m = strlen( str );
    for ( k = 0; k < m; k +=2 )
    {
        Uint32 X, Y, Z, M;
        q = str[k];
        w = str[k+1];

        if ( w > 0xa0 )
        {
            M = 0x5e;
            Y = w - 0xa1;
            if ( q > 0xa0 )
            {
                X = q - 0xa1;
                Z = 0;
            }
            else
            {
                X = q - 0x81;
                Z = 0x2284;
            }
        }
        else
        {
            M = 0x60;
            if ( w > 0x7f ) Y = w - 0x41;
            else Y = w - 0x40;

            if ( q > 0xa0 )
            {
                X = q - 0xa1;
                Z = 0x3a44;
            }
            else
            {
                X = q - 0x81;
                Z = 0x2e44;
            }
        }
        memcpy( Bits, HZK + ( X * M + Y + Z ) * width * 2, width * 2 );

        for ( i = 0; i < width; i ++ ) // row
        {
  Uint16 line;

            line = Bits[ i ];
            line = ( line >> 8 ) + ( line << 8 );

            for ( j = 0; j < 16 ; j ++ ) //col
            {
                int index;
                int mask = 1;

                index = offset + x + 16 - j - 1 + ( y + i ) * image->pitch / image->format->BytesPerPixel;
                mask <<= j;
                if ( mask & line )
                {
                    bufptr[ index * 2 ] = 0xff;
                    bufptr[ index * 2 + 1 ] = 0xff;
                }
            }
        }
        offset += width + space;
    }
    return true;
}
//---------------------------------------------------------------------------