rom/hyperlayers/scalelayer.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8 #include <aros/asmcall.h>
   9 #include <aros/debug.h>
  10 #include <proto/exec.h>
  11 #include <proto/utility.h>
  12 #include <exec/types.h>
  13 #include <exec/memory.h>
  14 #include "layers_intern.h"
  15 #include <aros/libcall.h>
  16 #include <proto/graphics.h>
  17 #include <graphics/scale.h>
  18 #include "basicfuncs.h"
  19
  20
  21 struct ScaleLayerParam
  22 {
  23   struct TagItem * taglist;
  24   struct LayersBase * LayersBase;
  25 };
  26
  27 AROS_UFP3(struct Region *, ScaleLayerCallback,
  28    AROS_UFPA(struct Hook                *, hook     , A0),
  29    AROS_UFPA(struct Layer               *, l        , A2),
  30    AROS_UFPA(struct ChangeLayerShapeMsg *, clsm     , A1));
  31
  32 /*****************************************************************************
  33
  34     NAME */
  35 #include <proto/layers.h>
  36         AROS_LH2(ULONG, ScaleLayer,
  37
  38 /*  SYNOPSIS */
  39         AROS_LHA(struct Layer   *, l         , A0),
  40         AROS_LHA(struct TagItem *, taglist   , A1),
  41
  42 /*  LOCATION */
  43         struct LayersBase *, LayersBase, 42, Layers)
  44
  45 /*  FUNCTION
  46         Scale the given layer. This function will use the
  47         current shape of the layer and resize it according to
  48         the given newwidth/newheight.
  49
  50     INPUTS
  51        L           - pointer to layer
  52        newwidth    - new width of the layer
  53        newheight   - new height of the layer
  54
  55     RESULT
  56        TRUE if everything went alright, FALSE otherwise
  57
  58     NOTES
  59
  60     EXAMPLE
  61
  62     BUGS
  63
  64     SEE ALSO
  65
  66     INTERNALS
  67
  68     HISTORY
  69
  70 *****************************************************************************/
  71 {
  72   AROS_LIBFUNC_INIT
  73
  74   struct ScaleLayerParam parm = {taglist, LayersBase};
  75   struct Region * oldshape;
  76   struct Hook hook;
  77
  78   hook.h_Entry = (HOOKFUNC)ScaleLayerCallback;
  79   hook.h_Data  = (APTR)&parm;
  80
  81   oldshape = ChangeLayerShape(l, 0, &hook);
  82
  83   /*
  84    * I must not free oldshape here since it is also the new shape!
  85    */
  86
  87   return FALSE;
  88   AROS_LIBFUNC_EXIT
  89 } /* ScaleLayer */
  90
  91
  92
  93
  94
  95
  96
  97 /*
  98  * The ScaleLayer callback is doing the actul work of
  99  * scaling the layer.
 100  */
 101 AROS_UFH3(struct Region *, ScaleLayerCallback,
 102    AROS_UFHA(struct Hook                *, hook     , A0),
 103    AROS_UFHA(struct Layer               *, l        , A2),
 104    AROS_UFHA(struct ChangeLayerShapeMsg *, clsm     , A1))
 105 {
 106   AROS_USERFUNC_INIT
 107
 108   struct BitScaleArgs bsa;
 109   struct BitMap * bm = NULL;
 110   struct ScaleLayerParam * slp = (struct ScaleLayerParam *)hook->h_Data;
 111   struct LayersBase * LayersBase = slp->LayersBase;
 112
 113   struct TagItem * taglist = slp->taglist;
 114
 115   if (l->ClipRect->Next)
 116   {
 117     kprintf("%s: Only expecting one ClipRect - leaving!\n",__FUNCTION__);
 118     return NULL;
 119   }
 120
 121   bm = AllocBitMap(GetTagData(LA_DESTWIDTH , l->Width , taglist),
 122                    GetTagData(LA_DESTHEIGHT, l->Height, taglist),
 123                    l->ClipRect->BitMap->Depth,
 124                    0,
 125                    l->rp->BitMap);
 126
 127   bsa.bsa_SrcX        = GetTagData(LA_SRCX, 0, taglist);
 128   bsa.bsa_SrcY        = GetTagData(LA_SRCY, 0, taglist);
 129   bsa.bsa_SrcWidth    = GetTagData(LA_SRCWIDTH , l->Width , taglist);
 130   bsa.bsa_SrcHeight   = GetTagData(LA_SRCHEIGHT, l->Height, taglist);
 131   bsa.bsa_XSrcFactor  = bsa.bsa_SrcWidth;
 132   bsa.bsa_YSrcFactor  = bsa.bsa_SrcHeight;
 133   bsa.bsa_DestX       = GetTagData(LA_DESTX, 0, taglist);
 134   bsa.bsa_DestY       = GetTagData(LA_DESTY, 0, taglist);
 135 /*
 136   bsa.bsa_DestWidth   = GetTagData(LA_DESTWIDTH , l->Width , taglist);
 137   bsa.bsa_DestHeight  = GetTagData(LA_DESTHEIGHT, l->Height, taglist);
 138  */
 139   bsa.bsa_XDestFactor = GetTagData(LA_DESTWIDTH , l->Width , taglist);
 140   bsa.bsa_YDestFactor = GetTagData(LA_DESTHEIGHT, l->Height, taglist);
 141   bsa.bsa_SrcBitMap   = l->ClipRect->BitMap;
 142   bsa.bsa_DestBitMap  = bm;
 143   bsa.bsa_Flags       = 0;
 144 #if 0
 145   bsa.bsa_XDDA;
 146   bsa.bsa_YDDA;
 147   bsa.bsa_Reserved1;
 148   bsa.bsa_Reserved2;
 149 #endif
 150
 151 //kprintf("Scaling bitmap!\n");
 152   BitMapScale(&bsa);
 153
 154   FreeBitMap(l->ClipRect->BitMap);
 155   l->ClipRect->BitMap = bm;
 156 //kprintf("Leaving %s!\n",__FUNCTION__);
 157
 158 kprintf("shaperegion: %p\n",l->shaperegion);
 159
 160   return l->shaperegion;
 161
 162   AROS_USERFUNC_EXIT
 163 }