reactos/subsys/win32k/dib/dib1bpp.c

   1 #undef WIN32_LEAN_AND_MEAN
   2 #include <windows.h>
   3 #include <stdlib.h>
   4 #include <win32k/bitmaps.h>
   5 #include <win32k/debug.h>
   6 #include <debug.h>
   7 #include <ddk/winddi.h>
   8 #include "../eng/objects.h"
   9 #include "dib.h"
  10
  11 VOID DIB_1BPP_PutPixel(PSURFOBJ SurfObj, LONG x, LONG y, ULONG c)
  12 {
  13   PBYTE addr = SurfObj->pvBits;
  14
  15   addr += y * SurfObj->lDelta + (x >> 3);
  16
  17   if(c == 0)
  18   {
  19     *addr = (*addr ^ mask1Bpp[x % 8]);
  20   }
  21     else
  22   {
  23     *addr = (*addr | mask1Bpp[x % 8]);
  24   }
  25 }
  26
  27 ULONG DIB_1BPP_GetPixel(PSURFOBJ SurfObj, LONG x, LONG y)
  28 {
  29   PBYTE addr = SurfObj->pvBits + y * SurfObj->lDelta + (x >> 3);
  30
  31   return (*addr & mask1Bpp[x % 8] ? 1 : 0);
  32 }
  33
  34 VOID DIB_1BPP_HLine(PSURFOBJ SurfObj, LONG x1, LONG x2, LONG y, ULONG c)
  35 {
  36   while(x1 < x2) {
  37     DIB_1BPP_PutPixel(SurfObj, x1, y, c);
  38     x1++;
  39   }
  40 }
  41
  42 VOID DIB_1BPP_VLine(PSURFOBJ SurfObj, LONG x, LONG y1, LONG y2, ULONG c)
  43 {
  44   while(y1 < y2) {
  45     DIB_1BPP_PutPixel(SurfObj, x, y1, c);
  46     y1++;
  47   }
  48 }
  49
  50 BOOLEAN DIB_To_1BPP_Bitblt(  SURFOBJ *DestSurf, SURFOBJ *SourceSurf,
  51         SURFGDI *DestGDI,  SURFGDI *SourceGDI,
  52         PRECTL  DestRect,  POINTL  *SourcePoint,
  53         LONG    Delta,     XLATEOBJ *ColorTranslation)
  54 {
  55   LONG    i, j, sx, sy = SourcePoint->y;
  56
  57   switch(SourceGDI->BitsPerPixel)
  58   {
  59     case 1:
  60       for (j=DestRect->top; j<DestRect->bottom; j++)
  61       {
  62         sx = SourcePoint->x;
  63         for (i=DestRect->left; i<DestRect->right; i++)
  64         {
  65           if(DIB_1BPP_GetPixel(SourceSurf, sx, sy) == 0)
  66           {
  67             DIB_1BPP_PutPixel(DestSurf, i, j, 0);
  68           } else {
  69             DIB_1BPP_PutPixel(DestSurf, i, j, 1);
  70           }
  71           sx++;
  72         }
  73         sy++;
  74       }
  75       break;
  76
  77     case 4:
  78       for (j=DestRect->top; j<DestRect->bottom; j++)
  79       {
  80         sx = SourcePoint->x;
  81         for (i=DestRect->left; i<DestRect->right; i++)
  82         {
  83           if(XLATEOBJ_iXlate(ColorTranslation, DIB_4BPP_GetPixel(SourceSurf, sx, sy)) == 0)
  84           {
  85             DIB_1BPP_PutPixel(DestSurf, i, j, 0);
  86           } else {
  87             DIB_1BPP_PutPixel(DestSurf, i, j, 1);
  88           }
  89           sx++;
  90         }
  91         sy++;
  92       }
  93       break;
  94
  95     case 24:
  96       for (j=DestRect->top; j<DestRect->bottom; j++)
  97       {
  98         sx = SourcePoint->x;
  99         for (i=DestRect->left; i<DestRect->right; i++)
 100         {
 101           if(XLATEOBJ_iXlate(ColorTranslation, DIB_24BPP_GetPixel(SourceSurf, sx, sy)) == 0)
 102           {
 103             DIB_1BPP_PutPixel(DestSurf, i, j, 0);
 104           } else {
 105             DIB_1BPP_PutPixel(DestSurf, i, j, 1);
 106           }
 107           sx++;
 108         }
 109         sy++;
 110       }
 111       break;
 112
 113     default:
 114       DbgPrint("DIB_1BPP_Bitblt: Unhandled Source BPP: %u\n", SourceGDI->BitsPerPixel);
 115       return FALSE;
 116   }
 117
 118   return TRUE;
 119 }