rom/graphics/changeextspritea.c

   1 /*
   2     Copyright © 1995-2010, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Graphics function ChangeExtSpriteA()
   6     Lang: english
   7 */
   8
   9 #include <aros/debug.h>
  10 #include <graphics/gfxbase.h>
  11 #include <graphics/clip.h>
  12 #include <graphics/view.h>
  13 #include <graphics/sprite.h>
  14 #include <utility/tagitem.h>
  15 #include <proto/utility.h>
  16
  17 #include "gfxfuncsupport.h"
  18 #include "graphics_intern.h"
  19
  20 /*****************************************************************************
  21
  22     NAME */
  23 #include <proto/graphics.h>
  24
  25         AROS_LH4(LONG, ChangeExtSpriteA,
  26
  27 /*  SYNOPSIS */
  28         AROS_LHA(struct ViewPort *, vp, A0),
  29         AROS_LHA(struct ExtSprite *, oldsprite, A1),
  30         AROS_LHA(struct ExtSprite *, newsprite, A2),
  31         AROS_LHA(struct TagItem *, tags, A3),
  32
  33 /*  LOCATION */
  34         struct GfxBase *, GfxBase, 171, Graphics)
  35
  36 /*  FUNCTION
  37
  38     INPUTS
  39         vp        - pointer to ViewPort structure that this sprite is
  40                     relative to, or NULL if relative only top of View
  41         oldsprite - pointer to the old ExtSprite structure
  42         newsprite - pointer to the new ExtSprite structure
  43         tags      - pointer to taglist
  44
  45     RESULT
  46         success - 0 if there was an error
  47
  48     NOTES
  49
  50     EXAMPLE
  51
  52     BUGS
  53
  54     SEE ALSO
  55
  56     INTERNALS
  57         This is a minimal implementation which supports only single sprite #0
  58         for mouse pointer.
  59
  60         With vp set to NULL the function always fails at the moment.
  61
  62     HISTORY
  63
  64
  65 ******************************************************************************/
  66 {
  67     AROS_LIBFUNC_INIT
  68
  69     OOP_Object *bitmap;
  70     struct monitor_driverdata *mdd;
  71     LONG res;
  72
  73     D(bug("ChangeExtSpriteA(0x%p, 0x%p, 0x%p)\n", vp, oldsprite, newsprite));
  74
  75     /* We have only sprite #0 for the mouse pointer */
  76     if (newsprite->es_SimpleSprite.num)
  77         return 0;
  78
  79     /* Pick up position from old sprite */
  80     newsprite->es_SimpleSprite.x = oldsprite->es_SimpleSprite.x;
  81     newsprite->es_SimpleSprite.y = oldsprite->es_SimpleSprite.y;
  82     D(bug("Sprite position: (%d, %d)\n", newsprite->es_SimpleSprite.x, newsprite->es_SimpleSprite.y));
  83
  84     bitmap = OBTAIN_HIDD_BM(newsprite->es_BitMap);
  85     D(bug("HIDD bitmap object: 0x%p\n", bitmap));
  86
  87     if (vp) {
  88         /* Pick up display driver from ViewPort's bitmap */
  89         mdd = GET_BM_DRIVERDATA(vp->RasInfo->BitMap);
  90         res = HIDD_Gfx_SetCursorShape(mdd->gfxhidd, bitmap, 0, 0);
  91         if (res)
  92             HIDD_Gfx_SetCursorVisible(mdd->gfxhidd, TRUE);
  93     } else
  94         /* TODO: NULL ViewPort means Amiga(tm) chipset display */
  95         res = FALSE;
  96
  97     RELEASE_HIDD_BM(bitmap, newsprite->es_BitMap);
  98     return res;
  99
 100     AROS_LIBFUNC_EXIT
 101 } /* ChangeExtSpriteA */