rom/graphics/gfxnew.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8
   9 #include <exec/types.h>
  10 #include <exec/memory.h>
  11 #include <graphics/gfxbase.h>
  12 #include <graphics/monitor.h>
  13 #include <graphics/view.h>
  14 #include <graphics/gfxnodes.h>
  15 #include <proto/exec.h>
  16 #include <proto/graphics.h>
  17 #include "graphics_intern.h"
  18
  19 /*****************************************************************************
  20
  21     NAME */
  22
  23       AROS_LH1(struct ExtendedNode *, GfxNew,
  24
  25 /*  SYNOPSIS */
  26
  27       AROS_LHA( ULONG, node_type, D0),
  28
  29 /*  LOCATION */
  30
  31       struct GfxBase *, GfxBase, 110, Graphics)
  32
  33 /*  FUNCTION
  34       Allocate a special graphics extended data structure. The type of
  35       structure to be allocated is passed in the node_type identifier.
  36
  37     INPUTS
  38       node_type = the type of graphics extended data structure to allocate.
  39                   (see gfxnodes.h for identifier definitions.)
  40
  41     RESULT
  42       A pointer to the allocated graphics node or NULL if the allocation
  43       failed
  44
  45     NOTES
  46
  47     EXAMPLE
  48
  49     BUGS
  50
  51     SEE ALSO
  52       graphics/gfxnodes.h GfxFree(), GfxAssociate(), GfxLookUp()
  53
  54     INTERNALS
  55
  56     HISTORY
  57
  58 ******************************************************************************/
  59 {
  60   AROS_LIBFUNC_INIT
  61
  62   struct ExtendedNode * Result;
  63   const ULONG GfxNew_memsizes[] = { 0,
  64                                     sizeof(struct ViewExtra),
  65                                     sizeof(struct ViewPortExtra),
  66                                     sizeof(struct SpecialMonitor),
  67                                     sizeof(struct MonitorSpec)
  68                                   };
  69
  70
  71   if (node_type >= VIEW_EXTRA_TYPE && node_type <= MONITOR_SPEC_TYPE)
  72   {
  73     Result = (struct ExtendedNode *) AllocMem(GfxNew_memsizes[node_type],
  74                                               MEMF_CLEAR | MEMF_PUBLIC);
  75     if (Result)
  76     {
  77       /* do some initialisation they all have in common */
  78       Result->xln_Type = NT_GRAPHICS;
  79       Result->xln_Subsystem = SS_GRAPHICS;
  80       Result->xln_Subtype = (BYTE)node_type;
  81       /* Result->xln_Library = (APTR)GfxBase; */
  82
  83       /* the following pointer has to point to some unknown routine */
  84       /* Result->xln_Init = ???; */
  85
  86       /* lets get more specific now !*/
  87       switch(node_type)
  88       {
  89         case VIEW_EXTRA_TYPE:
  90           ((struct ViewExtra *)Result)->Monitor = (struct MonitorSpec *)
  91              FindName((struct List *)(&(GfxBase -> MonitorList)), DEFAULT_MONITOR_NAME);
  92           break;
  93         case VIEWPORT_EXTRA_TYPE:
  94           break;
  95         case SPECIAL_MONITOR_TYPE:
  96           /* ((struct SpecialMonitor *)Result).do_monitor = */
  97         break;
  98         case MONITOR_SPEC_TYPE:
  99           /* ((struct MonitorSpec *)Result)->ms_transform = */
 100           /* ((struct MonitorSpec *)Result)->ms_translate = */
 101           /* ((struct MonitorSpec *)Result)->ms_scale = */
 102           /* ((struct MonitorSpec *)Result)->ms_xoffset = */
 103           /* ((struct MonitorSpec *)Result)->ms_yoffset = */
 104           /* ((struct MonitorSpec *)Result)->ms_maxoscan = */
 105           /* ((struct MonitorSpec *)Result)->ms_videoscan = */
 106           /* ((struct MonitorSpec *)Result)->ms_reserved00 = */
 107           /* ((struct MonitorSpec *)Result)->ms_reserved01 = */
 108           break;
 109       }
 110     return Result;
 111     } /* could allocate requested memory */
 112   } /* node_type is valid */
 113   return NULL;
 114
 115   AROS_LIBFUNC_EXIT
 116 } /* GfxNew */