dlls/krnl386.exe16/int33.c

   1 /*
   2  * DOS interrupt 33h handler
   3  *
   4  * Copyright 1999 Ove Kåven
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "wingdi.h"
  28 #include "winuser.h"
  29 #include "dosexe.h"
  30 #include "vga.h"
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(int);
  34
  35 static struct
  36 {
  37     WORD x, y, but;
  38     WORD lbcount, rbcount, rlastx, rlasty, llastx, llasty;
  39     FARPROC16 callback;
  40     WORD callmask;
  41     WORD VMPratio, HMPratio, oldx, oldy;
  42     WORD hide_count;
  43 } mouse_info;
  44
  45
  46 /**********************************************************************
  47  *          INT33_ResetMouse
  48  *
  49  * Handler for:
  50  * - subfunction 0x00 (reset mouse)
  51  * - subfunction 0x21 (software reset)
  52  */
  53 static void INT33_ResetMouse( CONTEXT86 *context )
  54 {
  55     memset( &mouse_info, 0, sizeof(mouse_info) );
  56
  57     /* Set the default mickey/pixel ratio */
  58     mouse_info.HMPratio = 8;
  59     mouse_info.VMPratio = 16;
  60
  61     /* Hide the mouse cursor */
  62     mouse_info.hide_count = 1;
  63     VGA_ShowMouse( FALSE );
  64
  65     if (context)
  66     {
  67         SET_AX( context, 0xFFFF ); /* driver installed */
  68         SET_BX( context, 3 );      /* number of buttons */
  69     }
  70 }
  71
  72
  73 /**********************************************************************
  74  *          DOSVM_Int33Handler
  75  *
  76  * Handler for int 33h (MS MOUSE).
  77  */
  78 void WINAPI DOSVM_Int33Handler( CONTEXT86 *context )
  79 {
  80     switch (AX_reg(context))
  81     {
  82     case 0x0000:
  83         TRACE("Reset mouse driver and request status\n");
  84         INT33_ResetMouse( context );
  85         break;
  86
  87     case 0x0001:
  88         TRACE("Show mouse cursor, old hide count: %d\n",
  89               mouse_info.hide_count);
  90         if (mouse_info.hide_count >= 1)
  91             mouse_info.hide_count--;
  92         if (!mouse_info.hide_count)
  93             VGA_ShowMouse( TRUE );
  94         break;
  95
  96     case 0x0002:
  97         TRACE("Hide mouse cursor, old hide count: %d\n",
  98               mouse_info.hide_count);
  99         if(!mouse_info.hide_count)
 100             VGA_ShowMouse( FALSE );
 101         mouse_info.hide_count++;
 102         break;
 103
 104     case 0x0003:
 105         TRACE("Return mouse position and button status: (%d,%d) and %d\n",
 106               mouse_info.x, mouse_info.y, mouse_info.but);
 107         SET_BX( context, mouse_info.but );
 108         SET_CX( context, mouse_info.x );
 109         SET_DX( context, mouse_info.y );
 110         break;
 111
 112     case 0x0004:
 113         FIXME("Position mouse cursor\n");
 114         break;
 115
 116     case 0x0005:
 117         TRACE("Return Mouse button press Information for %s mouse button\n",
 118               BX_reg(context) ? "right" : "left");
 119         if (BX_reg(context))
 120         {
 121             SET_BX( context, mouse_info.rbcount );
 122             mouse_info.rbcount = 0;
 123             SET_CX( context, mouse_info.rlastx );
 124             SET_DX( context, mouse_info.rlasty );
 125         }
 126         else
 127         {
 128             SET_BX( context, mouse_info.lbcount );
 129             mouse_info.lbcount = 0;
 130             SET_CX( context, mouse_info.llastx );
 131             SET_DX( context, mouse_info.llasty );
 132         }
 133         SET_AX( context, mouse_info.but );
 134         break;
 135
 136     case 0x0007:
 137         FIXME("Define horizontal mouse cursor range %d..%d\n",
 138               CX_reg(context), DX_reg(context));
 139         break;
 140
 141     case 0x0008:
 142         FIXME("Define vertical mouse cursor range %d..%d\n",
 143               CX_reg(context), DX_reg(context));
 144         break;
 145
 146     case 0x0009:
 147         FIXME("Define graphics mouse cursor\n");
 148         break;
 149
 150     case 0x000A:
 151         FIXME("Define text mouse cursor\n");
 152         break;
 153
 154     case 0x000B:
 155         TRACE("Read Mouse motion counters\n");
 156         {
 157             int dx = ((int)mouse_info.x - (int)mouse_info.oldx)
 158                 * (mouse_info.HMPratio / 8);
 159             int dy = ((int)mouse_info.y - (int)mouse_info.oldy)
 160                 * (mouse_info.VMPratio / 8);
 161
 162             SET_CX( context, (WORD)dx );
 163             SET_DX( context, (WORD)dy );
 164
 165             mouse_info.oldx = mouse_info.x;
 166             mouse_info.oldy = mouse_info.y;
 167         }
 168         break;
 169
 170     case 0x000C:
 171         TRACE("Define mouse interrupt subroutine\n");
 172         mouse_info.callmask = CX_reg(context);
 173         mouse_info.callback = (FARPROC16)MAKESEGPTR(context->SegEs,
 174                                                     DX_reg(context));
 175         break;
 176
 177     case 0x000F:
 178         TRACE("Set mickey/pixel ratio\n");
 179         mouse_info.HMPratio = CX_reg(context);
 180         mouse_info.VMPratio = DX_reg(context);
 181         break;
 182
 183     case 0x0010:
 184         FIXME("Define screen region for update\n");
 185         break;
 186
 187     case 0x0021:
 188         TRACE("Software reset\n");
 189         INT33_ResetMouse( context );
 190         break;
 191
 192     default:
 193         INT_BARF(context,0x33);
 194     }
 195 }
 196
 197 typedef struct {
 198   FARPROC16 proc;
 199   WORD mask,but,x,y,mx,my;
 200 } MCALLDATA;
 201
 202 static void MouseRelay(CONTEXT86 *context,void *mdata)
 203 {
 204   MCALLDATA *data = mdata;
 205   CONTEXT86 ctx = *context;
 206
 207   if (!ISV86(&ctx))
 208   {
 209       ctx.EFlags |= V86_FLAG;
 210       ctx.SegSs = 0; /* Allocate new stack. */
 211   }
 212
 213   ctx.Eax   = data->mask;
 214   ctx.Ebx   = data->but;
 215   ctx.Ecx   = data->x;
 216   ctx.Edx   = data->y;
 217   ctx.Esi   = data->mx;
 218   ctx.Edi   = data->my;
 219   ctx.SegCs = SELECTOROF(data->proc);
 220   ctx.Eip   = OFFSETOF(data->proc);
 221   HeapFree(GetProcessHeap(), 0, data);
 222   DPMI_CallRMProc(&ctx, NULL, 0, 0);
 223 }
 224
 225 static void QueueMouseRelay(DWORD mx, DWORD my, WORD mask)
 226 {
 227   mouse_info.x = mx;
 228   mouse_info.y = my;
 229
 230   /* Left button down */
 231   if(mask & 0x02) {
 232     mouse_info.but |= 0x01;
 233     mouse_info.llastx = mx;
 234     mouse_info.llasty = my;
 235     mouse_info.lbcount++;
 236   }
 237
 238   /* Left button up */
 239   if(mask & 0x04) {
 240     mouse_info.but &= ~0x01;
 241   }
 242
 243   /* Right button down */
 244   if(mask & 0x08) {
 245     mouse_info.but |= 0x02;
 246     mouse_info.rlastx = mx;
 247     mouse_info.rlasty = my;
 248     mouse_info.rbcount++;
 249   }
 250
 251   /* Right button up */
 252   if(mask & 0x10) {
 253     mouse_info.but &= ~0x02;
 254   }
 255
 256   /* Middle button down */
 257   if(mask & 0x20) {
 258     mouse_info.but |= 0x04;
 259   }
 260
 261   /* Middle button up */
 262   if(mask & 0x40) {
 263     mouse_info.but &= ~0x04;
 264   }
 265
 266   if ((mask & mouse_info.callmask) && mouse_info.callback) {
 267     MCALLDATA *data = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(MCALLDATA));
 268     data->proc = mouse_info.callback;
 269     data->mask = mask & mouse_info.callmask;
 270     data->but = mouse_info.but;
 271     data->x = mouse_info.x;
 272     data->y = mouse_info.y;
 273
 274     /*
 275      * Fake mickeys.
 276      *
 277      * FIXME: This is not entirely correct. If mouse if moved to the edge
 278      *        of the screen, mouse will stop moving and mickeys won't
 279      *        be updated even though they should be.
 280      */
 281     data->mx = mouse_info.x * (mouse_info.HMPratio / 8);
 282     data->my = mouse_info.y * (mouse_info.VMPratio / 8);
 283
 284     DOSVM_QueueEvent(-1, DOS_PRIORITY_MOUSE, MouseRelay, data);
 285   }
 286 }
 287
 288 void DOSVM_Int33Message(UINT message,WPARAM wParam,LPARAM lParam)
 289 {
 290   WORD mask = 0;
 291   unsigned Height, Width, SX=1, SY=1;
 292
 293   if (!VGA_GetMode(&Height,&Width,NULL)) {
 294     /* may need to do some coordinate scaling */
 295     if (Width)
 296       SX = 640/Width;
 297     if (!SX) SX=1;
 298   }
 299
 300   switch (message) {
 301   case WM_MOUSEMOVE:
 302     mask |= 0x01;
 303     break;
 304   case WM_LBUTTONDOWN:
 305   case WM_LBUTTONDBLCLK:
 306     mask |= 0x02;
 307     break;
 308   case WM_LBUTTONUP:
 309     mask |= 0x04;
 310     break;
 311   case WM_RBUTTONDOWN:
 312   case WM_RBUTTONDBLCLK:
 313     mask |= 0x08;
 314     break;
 315   case WM_RBUTTONUP:
 316     mask |= 0x10;
 317     break;
 318   case WM_MBUTTONDOWN:
 319   case WM_MBUTTONDBLCLK:
 320     mask |= 0x20;
 321     break;
 322   case WM_MBUTTONUP:
 323     mask |= 0x40;
 324     break;
 325   }
 326
 327   QueueMouseRelay(LOWORD(lParam) * SX,
 328                  HIWORD(lParam) * SY,
 329                  mask);
 330 }
 331
 332 void DOSVM_Int33Console(MOUSE_EVENT_RECORD *record)
 333 {
 334   unsigned Height, Width;
 335   WORD mask = 0;
 336   BOOL newLeftButton = record->dwButtonState & FROM_LEFT_1ST_BUTTON_PRESSED;
 337   BOOL oldLeftButton = mouse_info.but & 0x01;
 338   BOOL newRightButton = record->dwButtonState & RIGHTMOST_BUTTON_PRESSED;
 339   BOOL oldRightButton = mouse_info.but & 0x02;
 340   BOOL newMiddleButton = record->dwButtonState & FROM_LEFT_2ND_BUTTON_PRESSED;
 341   BOOL oldMiddleButton = mouse_info.but & 0x04;
 342
 343   if(newLeftButton && !oldLeftButton)
 344     mask |= 0x02;
 345   else if(!newLeftButton && oldLeftButton)
 346     mask |= 0x04;
 347
 348   if(newRightButton && !oldRightButton)
 349     mask |= 0x08;
 350   else if(!newRightButton && oldRightButton)
 351     mask |= 0x10;
 352
 353   if(newMiddleButton && !oldMiddleButton)
 354     mask |= 0x20;
 355   else if(!newMiddleButton && oldMiddleButton)
 356     mask |= 0x40;
 357
 358   if (VGA_GetAlphaMode(&Width, &Height))
 359     QueueMouseRelay( 640 / Width * record->dwMousePosition.X,
 360                      200 / Height * record->dwMousePosition.Y,
 361                      mask );
 362 }