rom/hyperlayers/sizelayer.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8 #include <aros/libcall.h>
   9
  10
  11 /*****************************************************************************
  12
  13     NAME */
  14 #include <proto/layers.h>
  15 #include "layers_intern.h"
  16
  17         AROS_LH4(LONG, SizeLayer,
  18
  19 /*  SYNOPSIS */
  20         AROS_LHA(LONG          , dummy, A0),
  21         AROS_LHA(struct Layer *, l    , A1),
  22         AROS_LHA(LONG          , dw   , D0),
  23         AROS_LHA(LONG          , dh   , D1),
  24
  25 /*  LOCATION */
  26         struct LayersBase *, LayersBase, 11, Layers)
  27
  28 /*  FUNCTION
  29         Resizes the given layer by adding dw to its width and dh
  30         to its height.
  31         If parts of simple layers become visible those parts are
  32         added to the damage list and a refresh is triggered for
  33         those layers.
  34         If the new layer is bigger than before the additional parts
  35         are added to a damage list if the layer is a non-super-
  36         bitmap layer. Refresh is also triggered for this layer.
  37
  38     INPUTS
  39         l    - pointer to layer to be resized
  40         dw   - delta to be added to the width
  41         dh   - delta to be added to the height
  42
  43     RESULT
  44         TRUE  - layer could be resized
  45         FALSE - error occurred (out of memory)
  46
  47     NOTES
  48
  49     EXAMPLE
  50
  51     BUGS
  52
  53     SEE ALSO
  54
  55     INTERNALS
  56
  57     HISTORY
  58         27-11-96    digulla automatically created from
  59                             layers_lib.fd and clib/layers_protos.h
  60
  61 *****************************************************************************/
  62 {
  63   AROS_LIBFUNC_INIT
  64   AROS_LIBBASE_EXT_DECL(struct LayersBase *,LayersBase)
  65
  66   /*
  67     In this case I will create a layer behind the current layer and
  68     I will try to clear as little of the layer that was above it as
  69     possible.
  70   */
  71   return MoveSizeLayer(l,0,0,dw,dh);
  72
  73
  74   AROS_LIBFUNC_EXIT
  75
  76 } /* SizeLayer */