bitmap.h

开放源码的编译器open watcom 1.6.0版的源代码

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  Bitmap file loader interface.
*
****************************************************************************/


#ifndef BITAMP_INCLUDED
#define BITAMP_INCLUDED

#define BITMAP_TYPE     ( (((WORD)'M')<<8)+'B' )

/* this macros determines the number of bytes of storage needed by a bitmap */
#define BITS_TO_BYTES( x, y )   ( ( ( ( x ) + 31 ) / 32 ) * 4 * ( y ) )

/* Old version
#define DIB_INFO_SIZE( bc )  ( sizeof(BITMAPINFO) + \
                                    sizeof(RGBQUAD) * ((1<<(bc))-1))
New below: only add size for palette if bits per pix is 8 or less.
*/
#define DIB_INFO_SIZE( bc )  \
    ( (bc) < 9 ? sizeof(BITMAPINFO) + sizeof(RGBQUAD) * ((1<<(bc))-1) : sizeof(BITMAPINFOHEADER) )

#define CORE_INFO_SIZE( bc ) ( sizeof(BITMAPCOREINFO) + \
                                    sizeof(RGBTRIPLE) * ((1<<(bc))-1))

typedef struct {
    char                is_core;
    union {
        BITMAPCOREINFO  *bm_core;
        BITMAPINFO      *bm_info;
    };
} bitmap_info;

extern HBITMAP ReadBitmapFile( HWND, char *, bitmap_info *);

#endif