src/gtk/joystick.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        joystick.cpp
   3 // Purpose:     wxJoystick class
   4 // Author:      Ported to Linux by Guilhem Lavaux
   5 // Modified by:
   6 // Created:     05/23/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Guilhem Lavaux
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "joystick.h"
  14 #endif
  15
  16 #include <linux/joystick.h>
  17 #include <sys/types.h>
  18 #include <sys/stat.h>
  19 #include <sys/time.h>
  20 #include <sys/ioctl.h>
  21 #include <fcntl.h>
  22 #include <unistd.h>
  23 #include "wx/event.h"
  24 #include "wx/window.h"
  25 #include "wx/gtk/joystick.h"
  26
  27 #define JOYSTICK_AXE_MAX 32767
  28 #define JOYSTICK_AXE_MIN -32767
  29
  30 IMPLEMENT_DYNAMIC_CLASS(wxJoystick, wxObject)
  31
  32 wxJoystick::wxJoystick(int joystick)
  33 {
  34   wxString dev_name;
  35   // Assume it's the same device name on all Linux systems ...
  36   dev_name.Printf("/dev/js%d", (joystick == wxJOYSTICK1) ? 0 : 1);
  37
  38   m_joystick = open(dev_name, O_RDWR);
  39   m_lastposition = wxPoint(-1, -1);
  40   for (int i=0;i<15;i++)
  41     m_axe[i] = 0;
  42   if (m_joystick != -1)
  43     Create();
  44 }
  45
  46 ////////////////////////////////////////////////////////////////////////////
  47 // Background thread
  48 ////////////////////////////////////////////////////////////////////////////
  49 void *wxJoystick::Entry(void)
  50 {
  51   struct js_event j_evt;
  52   wxJoystickEvent jwx_event;
  53   fd_set read_fds;
  54   struct timeval time_out = {0, 0};
  55
  56   FD_ZERO(&read_fds);
  57   DeferDestroy(TRUE);
  58   while (1) {
  59     TestDestroy();
  60
  61     if (m_polling) {
  62       FD_SET(m_joystick, &read_fds);
  63       select(m_joystick+1, &read_fds, NULL, NULL, &time_out);
  64       if (FD_ISSET(m_joystick, &read_fds))
  65         read(m_joystick, &j_evt, sizeof(j_evt));
  66       else
  67         j_evt.type = 0;
  68     } else {
  69       read(m_joystick, &j_evt, sizeof(j_evt));
  70     }
  71
  72     if ((j_evt.type & JS_EVENT_AXIS) == JS_EVENT_AXIS) {
  73       switch (j_evt.number) {
  74       case 1:
  75         m_lastposition.x = j_evt.value;
  76         jwx_event.SetEventType(wxEVT_JOY_MOVE);
  77         break;
  78       case 2:
  79         m_lastposition.y = j_evt.value;
  80         jwx_event.SetEventType(wxEVT_JOY_MOVE);
  81         break;
  82       case 3:
  83         m_axe[3] = j_evt.value;
  84         jwx_event.SetEventType(wxEVT_JOY_ZMOVE);
  85         break;
  86       default:
  87         m_axe[j_evt.number] = j_evt.value;
  88         jwx_event.SetEventType(wxEVT_JOY_MOVE);
  89         break;
  90       }
  91       jwx_event.SetPosition(m_lastposition);
  92       jwx_event.SetZPosition(m_axe[3]);
  93     }
  94     if ((j_evt.type & JS_EVENT_BUTTON) == JS_EVENT_BUTTON) {
  95       register int mask = 1 << j_evt.number;
  96       char button = m_buttons & mask;
  97
  98       m_buttons &= ~mask;
  99       if (button) {
 100         jwx_event.SetEventType(wxEVT_JOY_BUTTON_UP);
 101       } else {
 102         jwx_event.SetEventType(wxEVT_JOY_BUTTON_DOWN);
 103         m_buttons |= mask;
 104       }
 105
 106       jwx_event.SetButtonState(m_buttons);
 107       jwx_event.SetButtonChange(j_evt.number);
 108     }
 109   }
 110   if (m_catchwin)
 111     m_catchwin->ProcessEvent(jwx_event);
 112   if (m_polling)
 113     usleep(m_polling*1000);
 114 }
 115
 116 ////////////////////////////////////////////////////////////////////////////
 117 // State
 118 ////////////////////////////////////////////////////////////////////////////
 119
 120 wxPoint wxJoystick::GetPosition(void) const
 121 {
 122   return m_lastposition;
 123 }
 124
 125 int wxJoystick::GetZPosition(void) const
 126 {
 127   return m_axe[3];
 128 }
 129
 130 int wxJoystick::GetButtonState(void) const
 131 {
 132   return m_buttons;
 133 }
 134
 135 int wxJoystick::GetPOVPosition(void) const
 136 {
 137   return 0;
 138 }
 139
 140 int wxJoystick::GetPOVCTSPosition(void) const
 141 {
 142   return 0;
 143 }
 144
 145 int wxJoystick::GetRudderPosition(void) const
 146 {
 147   return m_axe[4];
 148 }
 149
 150 int wxJoystick::GetUPosition(void) const
 151 {
 152   return m_axe[5];
 153 }
 154
 155 int wxJoystick::GetVPosition(void) const
 156 {
 157   return m_axe[6];
 158 }
 159
 160 int wxJoystick::GetMovementThreshold(void) const
 161 {
 162   return 0;
 163 }
 164
 165 void wxJoystick::SetMovementThreshold(int threshold)
 166 {
 167 }
 168
 169 ////////////////////////////////////////////////////////////////////////////
 170 // Capabilities
 171 ////////////////////////////////////////////////////////////////////////////
 172
 173 bool wxJoystick::IsOk(void) const
 174 {
 175   return (m_joystick != -1);
 176 }
 177
 178 int wxJoystick::GetNumberJoysticks(void) const
 179 {
 180   wxString dev_name;
 181   int fd, j;
 182
 183   for (j=0;j<2;j++) {
 184     dev_name.Printf("/dev/js%d", j);
 185     fd = open(dev_name, O_RDONLY);
 186     if (fd == -1)
 187       return j;
 188     close(fd);
 189   }
 190   return j;
 191 }
 192
 193 int wxJoystick::GetManufacturerId(void) const
 194 {
 195   return 0;
 196 }
 197
 198 int wxJoystick::GetProductId(void) const
 199 {
 200   return 0;
 201 }
 202
 203 wxString wxJoystick::GetProductName(void) const
 204 {
 205   return "";
 206 }
 207
 208 int wxJoystick::GetXMin(void) const
 209 {
 210   return JOYSTICK_AXE_MAX;
 211 }
 212
 213 int wxJoystick::GetYMin(void) const
 214 {
 215   return JOYSTICK_AXE_MAX;
 216 }
 217
 218 int wxJoystick::GetZMin(void) const
 219 {
 220   return JOYSTICK_AXE_MAX;
 221 }
 222
 223 int wxJoystick::GetXMax(void) const
 224 {
 225   return JOYSTICK_AXE_MAX;
 226 }
 227
 228 int wxJoystick::GetYMax(void) const
 229 {
 230   return JOYSTICK_AXE_MAX;
 231 }
 232
 233 int wxJoystick::GetZMax(void) const
 234 {
 235   return JOYSTICK_AXE_MAX;
 236 }
 237
 238 int wxJoystick::GetNumberButtons(void) const
 239 {
 240   int nb;
 241
 242   ioctl(m_joystick, JSIOCGBUTTONS, &nb);
 243
 244   return nb;
 245 }
 246
 247 int wxJoystick::GetNumberAxes(void) const
 248 {
 249   int nb;
 250
 251   ioctl(m_joystick, JSIOCGAXES, &nb);
 252
 253   return nb;
 254 }
 255
 256 int wxJoystick::GetMaxButtons(void) const
 257 {
 258   return 15; // internal
 259 }
 260
 261 int wxJoystick::GetMaxAxes(void) const
 262 {
 263   return 15; // internal
 264 }
 265
 266 int wxJoystick::GetPollingMin(void) const
 267 {
 268   return -1;
 269 }
 270
 271 int wxJoystick::GetPollingMax(void) const
 272 {
 273   return -1;
 274 }
 275
 276 int wxJoystick::GetRudderMin(void) const
 277 {
 278   return JOYSTICK_AXE_MIN;
 279 }
 280
 281 int wxJoystick::GetRudderMax(void) const
 282 {
 283   return JOYSTICK_AXE_MAX;
 284 }
 285
 286 int wxJoystick::GetUMin(void) const
 287 {
 288   return JOYSTICK_AXE_MIN;
 289 }
 290
 291 int wxJoystick::GetUMax(void) const
 292 {
 293   return JOYSTICK_AXE_MAX;
 294 }
 295
 296 int wxJoystick::GetVMin(void) const
 297 {
 298   return JOYSTICK_AXE_MIN;
 299 }
 300
 301 int wxJoystick::GetVMax(void) const
 302 {
 303   return JOYSTICK_AXE_MAX;
 304 }
 305
 306 bool wxJoystick::HasRudder(void) const
 307 {
 308   return GetNumberAxes() >= 4;
 309 }
 310
 311 bool wxJoystick::HasZ(void) const
 312 {
 313   return GetNumberAxes() >= 3;
 314 }
 315
 316 bool wxJoystick::HasU(void) const
 317 {
 318   return GetNumberAxes() >= 5;
 319 }
 320
 321 bool wxJoystick::HasV(void) const
 322 {
 323   return GetNumberAxes() >= 6;
 324 }
 325
 326 bool wxJoystick::HasPOV(void) const
 327 {
 328   return FALSE;
 329 }
 330
 331 bool wxJoystick::HasPOV4Dir(void) const
 332 {
 333   return FALSE;
 334 }
 335
 336 bool wxJoystick::HasPOVCTS(void) const
 337 {
 338   return FALSE;
 339 }
 340
 341 ////////////////////////////////////////////////////////////////////////////
 342 // Operations
 343 ////////////////////////////////////////////////////////////////////////////
 344
 345 bool wxJoystick::SetCapture(wxWindow* win, int pollingFreq = 0)
 346 {
 347   m_catchwin = win;
 348   m_polling = pollingFreq;
 349   return TRUE;
 350 }
 351
 352 bool wxJoystick::ReleaseCapture(void)
 353 {
 354   m_catchwin = NULL;
 355   m_polling = 0;
 356   return TRUE;
 357 }
 358