msdos/int33.c

   1 /*
   2  * DOS interrupt 33h handler
   3  */
   4
   5 #include <stdlib.h>
   6 #include "windef.h"
   7 #include "wingdi.h"
   8 #include "winuser.h"
   9 #include "miscemu.h"
  10 #include "dosexe.h"
  11 #include "vga.h"
  12 #include "debugtools.h"
  13
  14 DEFAULT_DEBUG_CHANNEL(int)
  15
  16 typedef struct {
  17   DWORD x, y, but;
  18   FARPROC16 callback;
  19   WORD callmask;
  20 } MOUSESYSTEM;
  21
  22 /**********************************************************************
  23  *          INT_Int33Handler
  24  *
  25  * Handler for int 33h (MS MOUSE).
  26  */
  27 void WINAPI INT_Int33Handler( CONTEXT86 *context )
  28 {
  29   MOUSESYSTEM *sys = (MOUSESYSTEM *)DOSVM_GetSystemData(0x33);
  30
  31   switch (AX_reg(context)) {
  32   case 0x00:
  33     TRACE("Reset mouse driver and request status\n");
  34     AX_reg(context) = 0xFFFF; /* installed */
  35     BX_reg(context) = 3;      /* # of buttons */
  36     sys = calloc(1,sizeof(MOUSESYSTEM));
  37     DOSVM_SetSystemData(0x33, sys);
  38     break;
  39   case 0x01:
  40     FIXME("Show mouse cursor\n");
  41     break;
  42   case 0x02:
  43     FIXME("Hide mouse cursor\n");
  44     break;
  45   case 0x03:
  46     TRACE("Return mouse position and button status\n");
  47     BX_reg(context) = sys->but;
  48     CX_reg(context) = sys->x;
  49     DX_reg(context) = sys->y;
  50     break;
  51   case 0x04:
  52     FIXME("Position mouse cursor\n");
  53     break;
  54   case 0x07:
  55     FIXME("Define horizontal mouse cursor range\n");
  56     break;
  57   case 0x08:
  58     FIXME("Define vertical mouse cursor range\n");
  59     break;
  60   case 0x09:
  61     FIXME("Define graphics mouse cursor\n");
  62     break;
  63   case 0x0A:
  64     FIXME("Define text mouse cursor\n");
  65     break;
  66   case 0x0C:
  67     TRACE("Define mouse interrupt subroutine\n");
  68     sys->callmask = CX_reg(context);
  69     sys->callback = (FARPROC16)PTR_SEG_OFF_TO_SEGPTR(ES_reg(context), DX_reg(context));
  70     break;
  71   case 0x10:
  72     FIXME("Define screen region for update\n");
  73     break;
  74   default:
  75     INT_BARF(context,0x33);
  76   }
  77 }
  78
  79 typedef struct {
  80   FARPROC16 proc;
  81   WORD mask,but,x,y,mx,my;
  82 } MCALLDATA;
  83
  84 static void MouseRelay(LPDOSTASK lpDosTask,CONTEXT86 *context,void *mdata)
  85 {
  86   MCALLDATA *data = (MCALLDATA *)mdata;
  87   CONTEXT86 ctx = *context;
  88
  89   EAX_reg(&ctx) = data->mask;
  90   EBX_reg(&ctx) = data->but;
  91   ECX_reg(&ctx) = data->x;
  92   EDX_reg(&ctx) = data->y;
  93   ESI_reg(&ctx) = data->mx;
  94   EDI_reg(&ctx) = data->my;
  95   CS_reg(&ctx)  = SELECTOROF(data->proc);
  96   EIP_reg(&ctx) = OFFSETOF(data->proc);
  97   free(data);
  98   DPMI_CallRMProc(&ctx, NULL, 0, 0);
  99 }
 100
 101 void WINAPI INT_Int33Message(UINT message,WPARAM wParam,LPARAM lParam)
 102 {
 103   MOUSESYSTEM *sys = (MOUSESYSTEM *)DOSVM_GetSystemData(0x33);
 104   WORD mask = 0;
 105   unsigned Height, Width, SX=1, SY=1;
 106
 107   if (!sys) return;
 108   if (!VGA_GetMode(&Height,&Width,NULL)) {
 109     /* may need to do some coordinate scaling */
 110     SX = 640/Width;
 111     if (!SX) SX=1;
 112   }
 113   sys->x = LOWORD(lParam) * SX;
 114   sys->y = HIWORD(lParam) * SY;
 115   switch (message) {
 116   case WM_MOUSEMOVE:
 117     mask |= 0x01;
 118     break;
 119   case WM_LBUTTONDOWN:
 120   case WM_LBUTTONDBLCLK:
 121     sys->but |= 0x01;
 122     mask |= 0x02;
 123     break;
 124   case WM_LBUTTONUP:
 125     sys->but &= ~0x01;
 126     mask |= 0x04;
 127     break;
 128   case WM_RBUTTONDOWN:
 129   case WM_RBUTTONDBLCLK:
 130     sys->but |= 0x02;
 131     mask |= 0x08;
 132     break;
 133   case WM_RBUTTONUP:
 134     sys->but &= ~0x02;
 135     mask |= 0x10;
 136     break;
 137   case WM_MBUTTONDOWN:
 138   case WM_MBUTTONDBLCLK:
 139     sys->but |= 0x04;
 140     mask |= 0x20;
 141     break;
 142   case WM_MBUTTONUP:
 143     sys->but &= ~0x04;
 144     mask |= 0x40;
 145     break;
 146   }
 147
 148   if ((mask & sys->callmask) && sys->callback) {
 149     MCALLDATA *data = calloc(1,sizeof(MCALLDATA));
 150     data->proc = sys->callback;
 151     data->mask = mask & sys->callmask;
 152     data->but = sys->but;
 153     data->x = sys->x;
 154     data->y = sys->y;
 155     DOSVM_QueueEvent(-1, DOS_PRIORITY_MOUSE, MouseRelay, data);
 156   }
 157 }