dlls/winedib.drv/dib.c

   1 /*
   2  * DIBDRV device-independent bitmaps
   3  *
   4  * Copyright 2007 Jesse Allen
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "wine/debug.h"
  27
  28 #include "dibdrv.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(dibdrv);
  31
  32 /***********************************************************************
  33  *           DIBDRV_CreateDIBSection
  34  */
  35 HBITMAP DIBDRV_CreateDIBSection( DIBDRVPHYSDEV *physDev, HBITMAP hbitmap,
  36                                  const BITMAPINFO *bmi, UINT usage )
  37 {
  38     FIXME("stub\n");
  39     return hbitmap;
  40 }
  41
  42 /***********************************************************************
  43  *           DIBDRV_GetDIBits
  44  */
  45 INT DIBDRV_GetDIBits( DIBDRVPHYSDEV *physDev, HBITMAP hbitmap, UINT startscan,
  46                       UINT lines, LPCVOID bits, const BITMAPINFO *info, UINT coloruse )
  47 {
  48     const DIBFUNCS *dst_funcs, *src_funcs;
  49     const DIBCONVERT *convs;
  50     DIBDRVBITMAP *dst, *src;
  51     int i, min_width;
  52
  53     TRACE("%p %p %u %u %p %p %u\n", physDev, hbitmap, startscan, lines, bits, info, coloruse);
  54
  55     dst = BITMAP_CreateFromBmi( info, (void *)bits );
  56     if (!dst) return 0;
  57
  58     src = BITMAP_CreateFromHBitmap( hbitmap, physDev->bmp->color_table, physDev->bmp->nb_colors );
  59     if (!src)
  60     {
  61         HeapFree( GetProcessHeap(), 0, dst );
  62         return 0;
  63     }
  64
  65     convs = BITMAP_GetDIBConversions( src->format );
  66     dst_funcs = BITMAP_GetDIBFuncs( dst->format );
  67     src_funcs = BITMAP_GetDIBFuncs( src->format );
  68     min_width = src->width < dst->width ?  src->width : dst->width;
  69
  70     /* copy a scanline at a time */
  71     for (i = startscan; i < startscan + lines; i++)
  72     {
  73         dst_funcs->MoveXY( dst, 0, i );
  74         src_funcs->MoveXY( src, 0, i );
  75         dst_funcs->Copy( dst, src, min_width, convs );
  76     }
  77
  78     HeapFree( GetProcessHeap(), 0, dst );
  79     HeapFree( GetProcessHeap(), 0, src );
  80     return i - startscan;
  81 }
  82
  83 /***********************************************************************
  84  *           DIBDRV_SetDIBColorTable
  85  */
  86 UINT DIBDRV_SetDIBColorTable( DIBDRVPHYSDEV *physDev, UINT start, UINT count,
  87                               const RGBQUAD *colors )
  88 {
  89     TRACE("%p %u %u %p\n", physDev, start, count, colors);
  90     if (!physDev->bmp->color_table || start + count > physDev->bmp->nb_colors)
  91         return 0; /* maybe */
  92     memcpy(physDev->bmp->color_table + start*sizeof(RGBQUAD), colors, count*sizeof(RGBQUAD));
  93     return count;
  94 }
  95
  96 /***********************************************************************
  97  *           DIBDRV_SetDIBits
  98  */
  99 INT DIBDRV_SetDIBits( DIBDRVPHYSDEV *physDev, HBITMAP hbitmap, UINT startscan,
 100                       UINT lines, LPCVOID bits, const BITMAPINFO *info, UINT coloruse )
 101 {
 102     const DIBFUNCS *dst_funcs, *src_funcs;
 103     const DIBCONVERT *convs;
 104     DIBDRVBITMAP *dst, *src;
 105     int i, min_width;
 106
 107     TRACE("%p %p %u %u %p %p %u\n", physDev, hbitmap, startscan, lines, bits, info, coloruse);
 108
 109     dst = BITMAP_CreateFromHBitmap( hbitmap, physDev->bmp->color_table, physDev->bmp->nb_colors );
 110     if (!dst) return 0;
 111
 112     src = BITMAP_CreateFromBmi( info, (void *)bits );
 113     if (!src)
 114     {
 115         HeapFree( GetProcessHeap(), 0, dst );
 116         return 0;
 117     }
 118
 119     convs = BITMAP_GetDIBConversions( src->format );
 120     dst_funcs = BITMAP_GetDIBFuncs( dst->format );
 121     src_funcs = BITMAP_GetDIBFuncs( src->format );
 122     min_width = dst->width < src->width ?  dst->width : src->width;
 123
 124     /* copy a scanline at a time */
 125     for (i = startscan; i < startscan + lines; i++)
 126     {
 127         dst_funcs->MoveXY( dst, 0, i );
 128         src_funcs->MoveXY( src, 0, i );
 129         dst_funcs->Copy( dst, src, min_width, convs );
 130     }
 131
 132     HeapFree( GetProcessHeap(), 0, dst );
 133     HeapFree( GetProcessHeap(), 0, src );
 134     return i - startscan;
 135 }
 136
 137 /*************************************************************************
 138  *              DIBDRV_SetDIBitsToDevice
 139  */
 140 INT DIBDRV_SetDIBitsToDevice( DIBDRVPHYSDEV *physDev, INT xDest, INT yDest, DWORD cx,
 141                               DWORD cy, INT xSrc, INT ySrc,
 142                               UINT startscan, UINT lines, LPCVOID bits,
 143                               const BITMAPINFO *info, UINT coloruse )
 144 {
 145     FIXME("stub\n");
 146     return 0;
 147 }