rom/graphics/bltmaskbitmaprastport.c

   1 /*
   2     Copyright © 1995-2011, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8
   9 #include <aros/debug.h>
  10 #include <proto/graphics.h>
  11 #include <proto/oop.h>
  12
  13 #include "graphics_intern.h"
  14 #include "gfxfuncsupport.h"
  15 #include "graphics_driver.h"
  16
  17 /****************************************************************************************/
  18
  19 struct bltmask_render_data
  20 {
  21     struct render_special_info rsi;
  22     struct BitMap              *srcbm;
  23     OOP_Object                 *srcbm_obj;
  24     PLANEPTR                   mask;
  25 };
  26
  27 static ULONG bltmask_render(APTR bltmask_rd, WORD srcx, WORD srcy,
  28                             OOP_Object *dstbm_obj, OOP_Object *dst_gc,
  29                             struct Rectangle *rect, struct GfxBase *GfxBase)
  30 {
  31     struct bltmask_render_data *brd = bltmask_rd;
  32     WORD width  = rect->MaxX - rect->MinX + 1;
  33     WORD height = rect->MaxY - rect->MinY + 1;
  34     OOP_Object *gfxhidd;
  35     BOOL ok;
  36
  37     gfxhidd = SelectDriverObject(brd->srcbm, dstbm_obj, GfxBase);
  38     ok = HIDD_Gfx_CopyBoxMasked(gfxhidd, brd->srcbm_obj, srcx, srcy, dstbm_obj, rect->MinX, rect->MinY, width, height, brd->mask, dst_gc);
  39
  40     return ok ? width * height : 0;
  41 }
  42
  43 /*****************************************************************************
  44
  45     NAME */
  46 #include <clib/graphics_protos.h>
  47
  48         AROS_LH10(void, BltMaskBitMapRastPort,
  49
  50 /*  SYNOPSIS */
  51         AROS_LHA(struct BitMap   *, srcBitMap, A0),
  52         AROS_LHA(WORD             , xSrc, D0),
  53         AROS_LHA(WORD             , ySrc, D1),
  54         AROS_LHA(struct RastPort *, destRP, A1),
  55         AROS_LHA(WORD             , xDest, D2),
  56         AROS_LHA(WORD             , yDest, D3),
  57         AROS_LHA(WORD             , xSize, D4),
  58         AROS_LHA(WORD             , ySize, D5),
  59         AROS_LHA(ULONG            , minterm, D6),
  60         AROS_LHA(PLANEPTR         , bltMask, A2),
  61
  62 /*  LOCATION */
  63         struct GfxBase *, GfxBase, 106, Graphics)
  64
  65 /*  FUNCTION
  66         Copies a part of a bitmap to another bitmap with using a mask.
  67
  68     INPUTS
  69         srcBitMap - Copy from this bitmap.
  70         xSrc, ySrc - This is the upper left corner of the area to copy.
  71         destRP - Destination RastPort.
  72         xDest, yDest - Upper left corner where to place the copy
  73         xSize, ySize - The size of the area to copy
  74         minterm - How to copy. See BltBitMap() for an explanation.
  75         bltMask - The mask bitplane must be of the same size as the source bitmap.
  76
  77     RESULT
  78         TRUE.
  79
  80     NOTES
  81
  82     EXAMPLE
  83
  84     BUGS
  85
  86     SEE ALSO
  87         ClipBlit()
  88
  89     INPUTS
  90
  91     RESULT
  92
  93     NOTES
  94
  95     INTERNALS
  96
  97     HISTORY
  98         27-11-96    digulla automatically created from
  99                             graphics_lib.fd and clib/graphics_protos.h
 100
 101 *****************************************************************************/
 102 {
 103     AROS_LIBFUNC_INIT
 104
 105     struct bltmask_render_data  brd;
 106     struct Rectangle            rr;
 107     OOP_Object                  *gc;
 108     Point                       src;
 109
 110     EnterFunc(bug("BltMaskBitMapRastPort(%p (%d*%d), %d*%d, %p, %d*%d, %d*%d, %02x, %p)\n",
 111         srcBitMap, srcBitMap->BytesPerRow, srcBitMap->Rows, xSrc, ySrc,
 112         destRP, xDest, yDest, xSize, ySize, minterm, bltMask));
 113
 114     FIX_GFXCOORD(xSrc);
 115     FIX_GFXCOORD(ySrc);
 116     FIX_GFXCOORD(xDest);
 117     FIX_GFXCOORD(yDest);
 118
 119     if ((xSize < 1) || (ySize < 1)) return;
 120
 121     brd.srcbm_obj = OBTAIN_HIDD_BM(srcBitMap);
 122     if (NULL == brd.srcbm_obj)
 123     {
 124         return;
 125     }
 126
 127     brd.srcbm = srcBitMap;
 128     brd.mask  = bltMask;
 129
 130     gc = GetDriverData(destRP, GfxBase);
 131     GC_DRMD(gc) = MINTERM_TO_GCDRMD(minterm);
 132
 133     rr.MinX = xDest;
 134     rr.MinY = yDest;
 135     rr.MaxX = xDest + xSize - 1;
 136     rr.MaxY = yDest + ySize - 1;
 137
 138     src.x = xSrc;
 139     src.y = ySrc;
 140
 141     do_render_with_gc(destRP, &src, &rr, bltmask_render, &brd, gc, TRUE, TRUE, GfxBase);
 142
 143     RELEASE_HIDD_BM(brd.srcbm_obj, srcBitMap);
 144     ReturnVoid("BltBitMapRastPort");
 145
 146     AROS_LIBFUNC_EXIT
 147
 148 } /* BltMaskBitMapRastPort */