src += pdc->step;            w -= pdc->step;        }    }    else while (w > 0) {        *row &= *src;        row += pdc->step;        src += pdc->step;        w -= pdc->step;    }}static void _dc_put_hline_and_2 (PDC pdc, Uint8* src, int w){    Uint16* dstrow = (Uint16*)pdc->cur_dst;    Uint16* srcrow = (Uint16*)src;#ifdef ASM_memandcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT            && !((Uint32)dstrow & 3) && !((Uint32)srcrow & 3) && !(w & 1)) {        ASM_memandcpy4 (dstrow, srcrow, w >> 1);        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (*srcrow != pdc->skip_pixel)                *dstrow &= *srcrow;            dstrow += pdc->step;            srcrow += pdc->step;            w -= pdc->step;        }    }    else while (w > 0) {        *dstrow &= *srcrow;        dstrow += pdc->step;        srcrow += pdc->step;        w -= pdc->step;    }}static void _dc_put_hline_and_3 (PDC pdc, Uint8* src, int w){    Uint8* row = (Uint8*)pdc->cur_dst;    int step = (pdc->step << 1) + pdc->step;#ifdef ASM_memandcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT) {        int i;        int n = (w << 1) + w;        int len = n >> 2;        if (!((Uint32)row & 3) && !((Uint32)src & 3) && len)            ASM_memandcpy4 (row, src, len);        len <<= 2;        row += len; src += len;        for (i = 0; i < (n % 4); i++) {            *row++ &= *src++;        }        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (((* (Uint32*)row) & 0x00FFFFFF) != pdc->skip_pixel) {               *row &= *src;               *(row + 1) &= *(src + 1);               *(row + 2) &= *(src + 2);            }            row += step;            src += step;            w -= pdc->step;        }    }    else while (w > 0) {        *row &= *src;        *(row + 1) &= *(src + 1);        *(row + 2) &= *(src + 2);        row += step;        src += step;        w -= pdc->step;    }}static void _dc_put_hline_and_4 (PDC pdc, Uint8* src, int w){    Uint32* dstrow = (Uint32*)pdc->cur_dst;    Uint32* srcrow = (Uint32*)src;#ifdef ASM_memandcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT) {        ASM_memandcpy4 (dstrow, srcrow, w);        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (*srcrow != pdc->skip_pixel)                *dstrow &= *srcrow;            dstrow += pdc->step;            srcrow += pdc->step;            w -= pdc->step;        }    }    else while (w > 0) {        *dstrow &= *srcrow;        dstrow += pdc->step;        srcrow += pdc->step;        w -= pdc->step;    }}static void _dc_put_hline_or_1 (PDC pdc, Uint8* src, int w){    Uint8* row = pdc->cur_dst;#ifdef ASM_memorcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT            && !((Uint32)row & 3) && !((Uint32)src & 3) && !(w & 3)) {        ASM_memorcpy4 (row, src, w >> 2);        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (*src != pdc->skip_pixel)                *row |= *src;            row += pdc->step;            src += pdc->step;            w -= pdc->step;        }    }    else while (w > 0) {        *row |= *src;        row += pdc->step;        src += pdc->step;        w -= pdc->step;    }}static void _dc_put_hline_or_2 (PDC pdc, Uint8* src, int w){    Uint16* dstrow = (Uint16*)pdc->cur_dst;    Uint16* srcrow = (Uint16*)src;#ifdef ASM_memorcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT            && !((Uint32)dstrow & 3) && !((Uint32)srcrow & 3) && !(w & 1)) {        ASM_memorcpy4 (dstrow, srcrow, w >> 1);        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (*srcrow != pdc->skip_pixel)                *dstrow |= *srcrow;            dstrow += pdc->step;            srcrow += pdc->step;            w -= pdc->step;        }    }    else while (w > 0) {        *dstrow |= *srcrow;        dstrow += pdc->step;        srcrow += pdc->step;        w -= pdc->step;    }}static void _dc_put_hline_or_3 (PDC pdc, Uint8* src, int w){    Uint8* row = (Uint8*)pdc->cur_dst;    int step = (pdc->step << 1) + pdc->step;#ifdef ASM_memorcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT) {        int i;        int n = (w << 1) + w;        int len = n >> 2;        if (!((Uint32)row & 3) && !((Uint32)src & 3) && len)            ASM_memorcpy4 (row, src, len);        len <<= 2;        row += len; src += len;        for (i = 0; i < (n % 4); i++) {            *row++ |= *src++;        }        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (((* (Uint32*)row) & 0x00FFFFFF) != pdc->skip_pixel) {                *row |= *src;                *(row + 1) |= *(src + 1);                *(row + 2) |= *(src + 2);            }            row += step;            src += step;            w -= pdc->step;        }    }    else while (w > 0) {        *row |= *src;        *(row + 1) |= *(src + 1);        *(row + 2) |= *(src + 2);        row += step;        src += step;        w -= pdc->step;    }}static void _dc_put_hline_or_4 (PDC pdc, Uint8* src, int w){    Uint32* dstrow = (Uint32*)pdc->cur_dst;    Uint32* srcrow = (Uint32*)src;#ifdef ASM_memorcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT) {        ASM_memorcpy4 (dstrow, srcrow, w);        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (*srcrow != pdc->skip_pixel)                *dstrow |= *srcrow;            dstrow += pdc->step;            srcrow += pdc->step;            w -= pdc->step;        }    }    while (w > 0) {        *dstrow |= *srcrow;        dstrow += pdc->step;        srcrow += pdc->step;        w -= pdc->step;    }}static void _dc_put_hline_xor_1 (PDC pdc, Uint8* src, int w){    Uint8* row = pdc->cur_dst;#ifdef ASM_memxorcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT             && !((Uint32)row & 3) && !((Uint32)src & 3) && !(w & 3)) {        ASM_memxorcpy4 (row, src, w >> 2);        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (*src != pdc->skip_pixel)                *row ^= *src;            row += pdc->step;            src += pdc->step;            w -= pdc->step;        }    }    else while (w > 0) {        *row ^= *src;        row += pdc->step;        src += pdc->step;        w -= pdc->step;    }}static void _dc_put_hline_xor_2 (PDC pdc, Uint8* src, int w){    Uint16* dstrow = (Uint16*)pdc->cur_dst;    Uint16* srcrow = (Uint16*)src;#ifdef ASM_memxorcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT            && !((Uint32)dstrow & 3) && !((Uint32)srcrow & 3) && !(w & 1)) {        ASM_memxorcpy4 (dstrow, srcrow, w >> 1);        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (*srcrow != pdc->skip_pixel)                *dstrow ^= *srcrow;            dstrow += pdc->step;            srcrow += pdc->step;            w -= pdc->step;        }    }    else while (w > 0) {        *dstrow ^= *srcrow;        dstrow += pdc->step;        srcrow += pdc->step;        w -= pdc->step;    }}static void _dc_put_hline_xor_3 (PDC pdc, Uint8* src, int w){    Uint8* row = (Uint8*)pdc->cur_dst;    int step = (pdc->step << 1) + pdc->step;#ifdef ASM_memxorcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT) {        int i;        int n = (w << 1) + w;        int len = n >> 2;        if (!((Uint32)row & 3) && !((Uint32)src & 3) && len)            ASM_memxorcpy4 (row, src, len);        len <<= 2;        row += len; src += len;        for (i = 0; i < (n % 4); i++) {            *row++ ^= *src++;        }        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (((* (Uint32*)row) & 0x00FFFFFF) != pdc->skip_pixel) {                *row ^= *src;                *(row + 1) ^= *(src + 1);                *(row + 2) ^= *(src + 2);            }            row += step;            src += step;            w -= pdc->step;        }    }    while (w > 0) {        *row ^= *src;        *(row + 1) ^= *(src + 1);        *(row + 2) ^= *(src + 2);        row += step;        src += step;        w -= pdc->step;    }}static void _dc_put_hline_xor_4 (PDC pdc, Uint8* src, int w){    Uint32* dstrow = (Uint32*)pdc->cur_dst;    Uint32* srcrow = (Uint32*)src;#ifdef ASM_memxorcpy4    if (pdc->step == 1 && pdc->bkmode != BM_TRANSPARENT) {        ASM_memxorcpy4 (dstrow, srcrow, w);        return;    }#endif    if (pdc->bkmode == BM_TRANSPARENT) {        while (w > 0) {            if (*srcrow != pdc->skip_pixel)                *dstrow ^= *srcrow;            dstrow += pdc->step;            srcrow += pdc->step;            w -= pdc->step;        }    }    while (w > 0) {        *dstrow ^= *srcrow;        dstrow += pdc->step;        srcrow += pdc->step;        w -= pdc->step;    }}#define NR_ROPS         4#define NR_PIXEL_LEN    4static DC_SET_PIXEL set_pixel_ops [NR_ROPS][NR_PIXEL_LEN] ={    {_dc_set_pixel_1, _dc_set_pixel_2, _dc_set_pixel_3, _dc_set_pixel_4},    {_dc_and_pixel_1, _dc_and_pixel_2, _dc_and_pixel_3, _dc_and_pixel_4},    {_dc_or_pixel_1, _dc_or_pixel_2, _dc_or_pixel_3, _dc_or_pixel_4},    {_dc_xor_pixel_1, _dc_xor_pixel_2, _dc_xor_pixel_3, _dc_xor_pixel_4}};static DC_DRAW_HLINE draw_hline_ops [NR_ROPS][NR_PIXEL_LEN] ={    {_dc_draw_hline_set_1, _dc_draw_hline_set_2, _dc_draw_hline_set_3, _dc_draw_hline_set_4},    {_dc_draw_hline_and_1, _dc_draw_hline_and_2, _dc_draw_hline_and_3, _dc_draw_hline_and_4},    {_dc_draw_hline_or_1, _dc_draw_hline_or_2, _dc_draw_hline_or_3, _dc_draw_hline_or_4},    {_dc_draw_hline_xor_1, _dc_draw_hline_xor_2, _dc_draw_hline_xor_3, _dc_draw_hline_xor_4}};static DC_PUT_HLINE put_hline_ops [NR_ROPS][NR_PIXEL_LEN] ={    {_dc_put_hline_set_1, _dc_put_hline_set_2, _dc_put_hline_set_3, _dc_put_hline_set_4},    {_dc_put_hline_and_1, _dc_put_hline_and_2, _dc_put_hline_and_3, _dc_put_hline_and_4},    {_dc_put_hline_or_1, _dc_put_hline_or_2, _dc_put_hline_or_3, _dc_put_hline_or_4},    {_dc_put_hline_xor_1, _dc_put_hline_xor_2, _dc_put_hline_xor_3, _dc_put_hline_xor_4}};static DC_MOVE_TO move_to_ops [NR_PIXEL_LEN] = {    _dc_move_to_1,    _dc_move_to_2,    _dc_move_to_3,    _dc_move_to_4};static DC_STEP_X step_x_ops [NR_PIXEL_LEN] = {    _dc_step_x_1,    _dc_step_x_2,    _dc_step_x_3,    _dc_step_x_4};// This function init DC.// set the default parameters.static void dc_InitDC (PDC pdc, HWND hWnd, BOOL bIsClient){    PCONTROL pCtrl;    pdc->hwnd = hWnd;    pdc->bkcolor = GAL_MapRGB (pdc->surface->format, 0xFF, 0xFF, 0xFF);    pdc->bkmode = 0;    pdc->brushtype = BT_SOLID;    pdc->brushcolor = GAL_MapRGB (pdc->surface->format, 0xFF, 0xFF, 0xFF);    pdc->BrushOrig.x = pdc->BrushOrig.y = 0;    pdc->pentype = PT_SOLID;    pdc->pencolor = GAL_MapRGB (pdc->surface->format, 0x00, 0x00, 0x00);    pdc->textcolor = GAL_MapRGB (pdc->surface->format, 0x00, 0x00, 0x00);    if (!(pdc->pLogFont = GetWindowFont (hWnd)))        pdc->pLogFont = GetSystemFont (SYSLOGFONT_WCHAR_DEF);    pdc->tabstop = 8;    pdc->cExtra = pdc->alExtra = pdc->blExtra = 0;    pdc->mapmode = MM_TEXT;    pdc->ViewOrig.x = pdc->ViewOrig.y = 0;    pdc->ViewExtent.x = pdc->ViewExtent.y = 1;    pdc->WindowOrig.x = pdc->WindowOrig.y = 0;    pdc->WindowExtent.x = pdc->WindowExtent.y = 1;    // assume that the local clip region is empty.    // Get global clip region info and generate effective clip region.    if (dc_IsGeneralDC (pdc)) {        RECT minimal;        pdc->pGCRInfo = GetGCRgnInfo (hWnd);        LOCK (&pdc->pGCRInfo->lock);        pdc->oldage = pdc->pGCRInfo->age;        ClipRgnCopy (&pdc->ecrgn, &pdc->pGCRInfo->crgn);        pdc->bIsClient = bIsClient;        if (bIsClient)            WndClientRect (pdc->hwnd, &pdc->DevRC);        else            WndRect (pdc->hwnd, &pdc->DevRC);        minimal = pdc->DevRC;        pCtrl = Control (pdc->hwnd);        if (pCtrl && !(pCtrl->dwExStyle & WS_EX_CTRLASMAINWIN))            RestrictControlECRGN (&minimal, pCtrl);        IntersectClipRect (&pdc->ecrgn, &minimal);        UNLOCK (&pdc->pGCRInfo->lock);    }    // context info and raster operations.    pdc->CurPenPos.x = pdc->CurTextPos.x = 0;    pdc->CurPenPos.y = pdc->CurTextPos.y = 0;    pdc->rop = ROP_SET;    pdc->step = 1;    pdc->set_pixel = set_pixel_ops [pdc->rop][pdc->surface->format->BytesPerPixel - 1];    pdc->draw_hline = draw_hline_ops [pdc->rop][pdc->surface->format->BytesPerPixel - 1];    pdc->put_hline = put_hline_ops [pdc->rop][pdc->surface->format->BytesPerPixel - 1];    pdc->cur_dst = pdc->surface->pixels             + pdc->surface->pitch * pdc->DevRC.top            + pdc->surface->format->BytesPerPixel * pdc->DevRC.left;    pdc->move_to = move_to_ops [pdc->surface->format->BytesPerPixel - 1];    pdc->step_x = step_x_ops [pdc->surface->format->BytesPerPixel - 1];}static void dc_InitScreenDC (void){    __mg_screen_dc.DataType = TYPE_HDC;    __mg_screen_dc.DCType   = TYPE_SCRDC;    __mg_screen_dc.hwnd = 0;    __mg_screen_dc.surface = __gal_screen;    __mg_screen_dc.bkcolor = PIXEL_lightwhite;    __mg_screen_dc.bkmode = 0;    __mg_screen_dc.brushtype = BT_SOLID;    __mg_screen_dc.brushcolor = PIXEL_lightwhite;    __mg_screen_dc.BrushOrig.x = __mg_screen_dc.BrushOrig.y = 0;    __mg_screen_dc.pentype = PT_SOLID;    __mg_screen_dc.pencolor = PIXEL_black;    __mg_screen_dc.CurPenPos.x = __mg_screen_dc.CurPenPos.y = 0;    __mg_screen_dc.textcolor = PIXEL_black;    __mg_screen_dc.pLogFont = GetSystemFont (SYSLOGFONT_WCHAR_DEF);    __mg_screen_dc.tabstop = 8;    __mg_screen_dc.CurTextPos.x = __mg_screen_dc.CurTextPos.y = 0;    __mg_screen_dc.cExtra = __mg_screen_dc.alExtra = __mg_screen_dc.blExtra = 0;    __mg_screen_dc.ViewOrig.x = __mg_screen_dc.ViewOrig.y = 0;    __mg_screen_dc.ViewExtent.x = __mg_screen_dc.ViewExtent.y = 1;    __mg_screen_dc.WindowOrig.x = __mg_screen_dc.WindowOrig.y = 0;    __mg_screen_dc.WindowExtent.x = __mg_screen_dc.WindowExtent.y = 1;    __mg_screen_dc.bIsClient = FALSE;    // init local clippping region    // InitClipRgn (&__mg_screen_dc.lcrgn, &sg_FreeClipRectList);    // init effective clippping region    InitClipRgn (&__mg_screen_dc.ecrgn, &sg_FreeClipRectList);    // init global clip region information    __mg_screen_dc.pGCRInfo = NULL;    __mg_screen_dc.oldage = 0;    __mg_screen_dc.DevRC.left = 0;    __mg_screen_dc.DevRC.top  = 0;    __mg_screen_dc.DevRC.right = WIDTHOFPHYGC - 1;    __mg_screen_dc.DevRC.bottom = HEIGHTOFPHYGC - 1;    // Set effetive clippping region to the screen.    // SetClipRgn (&__mg_screen_dc.lcrgn, &__mg_screen_dc.DevRC);    SetClipRgn (&__mg_screen_dc.ecrgn, &__mg_screen_dc.DevRC);    // context info and raster operations.    __mg_screen_dc.rop = ROP_SET;    __mg_screen_dc.step = 1;    __mg_screen_dc.set_pixel = set_pixel_ops [__mg_screen_dc.rop]            [__mg_screen_dc.surface->format->BytesPerPixel - 1];    __mg_screen_dc.draw_hline = draw_hline_ops [__mg_screen_dc.rop]            [__mg_screen_dc.surface->format->BytesPerPixel - 1];    __mg_screen_dc.put_hline = put_hline_ops [__mg_screen_dc.rop]            [__mg_screen_dc.surface->format->BytesPerPixel - 1];    __mg_screen_dc.cur_dst = __mg_screen_dc.surface->pixels;    __mg_screen_dc.move_to = move_to_ops [__mg_screen_dc.surface->format->BytesPerPixel - 1];    __mg_screen_dc.step_x = step_x_ops [__mg_screen_dc.surface->format->BytesPerPixel - 1];}        int GUIAPI GetRasterOperation (HDC hdc){    PDC pdc;    pdc = dc_HDC2PDC (hdc);    return pdc->rop;}int GUIAPI SetRasterOperation (HDC hdc, int rop){    PDC pdc;    int old;    pdc = dc_HDC2PDC (hdc);    old = pdc->rop;    if (rop >= 0 && rop < NR_ROPS) {        pdc->rop = rop;        pdc->set_pixel = set_pixel_ops [rop]                [pdc->surface->format->BytesPerPixel - 1];        pdc->draw_hline = draw_hline_ops [rop]