rom/graphics/gfxnew.c

   1 /*
   2     Copyright © 1995-2010, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc:
   6     Lang: english
   7 */
   8
   9 #include <aros/debug.h>
  10 #include <exec/types.h>
  11 #include <exec/memory.h>
  12 #include <graphics/gfxbase.h>
  13 #include <graphics/monitor.h>
  14 #include <graphics/view.h>
  15 #include <graphics/gfxnodes.h>
  16 #include <proto/exec.h>
  17 #include <proto/graphics.h>
  18 #include "graphics_intern.h"
  19
  20 static LONG dummy_init(void);
  21
  22 /*****************************************************************************
  23
  24     NAME */
  25
  26       AROS_LH1(struct ExtendedNode *, GfxNew,
  27
  28 /*  SYNOPSIS */
  29
  30       AROS_LHA( ULONG, node_type, D0),
  31
  32 /*  LOCATION */
  33
  34       struct GfxBase *, GfxBase, 110, Graphics)
  35
  36 /*  FUNCTION
  37       Allocate a special graphics extended data structure. The type of
  38       structure to be allocated is passed in the node_type identifier.
  39
  40     INPUTS
  41       node_type = the type of graphics extended data structure to allocate.
  42                   (see gfxnodes.h for identifier definitions.)
  43
  44     RESULT
  45       A pointer to the allocated graphics node or NULL if the allocation
  46       failed
  47
  48     NOTES
  49
  50     EXAMPLE
  51
  52     BUGS
  53
  54     SEE ALSO
  55       graphics/gfxnodes.h, GfxFree(), GfxAssociate(), GfxLookUp()
  56
  57     INTERNALS
  58
  59     HISTORY
  60
  61 ******************************************************************************/
  62 {
  63   AROS_LIBFUNC_INIT
  64
  65   struct ExtendedNode * Result;
  66   const ULONG GfxNew_memsizes[] = { 0,
  67                                     sizeof(struct ViewExtra),
  68                                     sizeof(struct ViewPortExtra),
  69                                     sizeof(struct SpecialMonitor),
  70                                     sizeof(struct MonitorSpec)
  71                                   };
  72
  73
  74   if (node_type >= VIEW_EXTRA_TYPE && node_type <= MONITOR_SPEC_TYPE)
  75   {
  76     Result = (struct ExtendedNode *) AllocMem(GfxNew_memsizes[node_type],
  77                                               MEMF_CLEAR | MEMF_PUBLIC);
  78     if (Result)
  79     {
  80       /* do some initialisation they all have in common */
  81       Result->xln_Type = NT_GRAPHICS;
  82       Result->xln_Subsystem = SS_GRAPHICS;
  83       Result->xln_Subtype = (BYTE)node_type;
  84       Result->xln_Library = GfxBase;
  85
  86       /* the following pointer has to point to some unknown routine */
  87       /* WB2.x+ native monitor drivers call it, added dummy function to prevent crash */
  88       Result->xln_Init = dummy_init;
  89
  90
  91       /* lets get more specific now !*/
  92       switch(node_type)
  93       {
  94         case VIEW_EXTRA_TYPE:
  95           ((struct ViewExtra *)Result)->Monitor = GfxBase->natural_monitor;
  96              /* FindName() can't work here until ABI v1 release
  97              FindName((struct List *)(&(GfxBase -> MonitorList)), DEFAULT_MONITOR_NAME);*/
  98           break;
  99         case VIEWPORT_EXTRA_TYPE:
 100           break;
 101         case SPECIAL_MONITOR_TYPE:
 102           /* ((struct SpecialMonitor *)Result).do_monitor = */
 103         break;
 104         case MONITOR_SPEC_TYPE:
 105           /* ((struct MonitorSpec *)Result)->ms_transform = */
 106           /* ((struct MonitorSpec *)Result)->ms_translate = */
 107           /* ((struct MonitorSpec *)Result)->ms_scale = */
 108           /* ((struct MonitorSpec *)Result)->ms_xoffset = */
 109           /* ((struct MonitorSpec *)Result)->ms_yoffset = */
 110           /* ((struct MonitorSpec *)Result)->ms_maxoscan = */
 111           /* ((struct MonitorSpec *)Result)->ms_videoscan = */
 112           /* ((struct MonitorSpec *)Result)->ms_reserved00 = */
 113           /* ((struct MonitorSpec *)Result)->ms_reserved01 = */
 114           break;
 115       }
 116     return Result;
 117     } /* could allocate requested memory */
 118   } /* node_type is valid */
 119   return NULL;
 120
 121   AROS_LIBFUNC_EXIT
 122 } /* GfxNew */
 123
 124 static LONG dummy_init(void)
 125 {
 126     D(bug("xln_Init called\n"));
 127     return 0;
 128 }