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   while (1) {
  58     TestDestroy();
  59
  60     if (m_polling) {
  61       FD_SET(m_joystick, &read_fds);
  62       select(m_joystick+1, &read_fds, NULL, NULL, &time_out);
  63       if (FD_ISSET(m_joystick, &read_fds))
  64         read(m_joystick, &j_evt, sizeof(j_evt));
  65       else
  66         j_evt.type = 0;
  67     } else {
  68       read(m_joystick, &j_evt, sizeof(j_evt));
  69     }
  70
  71     if ((j_evt.type & JS_EVENT_AXIS) == JS_EVENT_AXIS) {
  72       switch (j_evt.number) {
  73       case 1:
  74         m_lastposition.x = j_evt.value;
  75         jwx_event.SetEventType(wxEVT_JOY_MOVE);
  76         break;
  77       case 2:
  78         m_lastposition.y = j_evt.value;
  79         jwx_event.SetEventType(wxEVT_JOY_MOVE);
  80         break;
  81       case 3:
  82         m_axe[3] = j_evt.value;
  83         jwx_event.SetEventType(wxEVT_JOY_ZMOVE);
  84         break;
  85       default:
  86         m_axe[j_evt.number] = j_evt.value;
  87         jwx_event.SetEventType(wxEVT_JOY_MOVE);
  88         break;
  89       }
  90       jwx_event.SetPosition(m_lastposition);
  91       jwx_event.SetZPosition(m_axe[3]);
  92     }
  93     if ((j_evt.type & JS_EVENT_BUTTON) == JS_EVENT_BUTTON) {
  94       register int mask = 1 << j_evt.number;
  95       char button = m_buttons & mask;
  96
  97       m_buttons &= ~mask;
  98       if (button) {
  99         jwx_event.SetEventType(wxEVT_JOY_BUTTON_UP);
 100       } else {
 101         jwx_event.SetEventType(wxEVT_JOY_BUTTON_DOWN);
 102         m_buttons |= mask;
 103       }
 104
 105       jwx_event.SetButtonState(m_buttons);
 106       jwx_event.SetButtonChange(j_evt.number);
 107     }
 108   }
 109   if (m_catchwin)
 110     m_catchwin->ProcessEvent(jwx_event);
 111   if (m_polling)
 112     usleep(m_polling*1000);
 113 }
 114
 115 ////////////////////////////////////////////////////////////////////////////
 116 // State
 117 ////////////////////////////////////////////////////////////////////////////
 118
 119 wxPoint wxJoystick::GetPosition(void) const
 120 {
 121   return m_lastposition;
 122 }
 123
 124 int wxJoystick::GetZPosition(void) const
 125 {
 126   return m_axe[3];
 127 }
 128
 129 int wxJoystick::GetButtonState(void) const
 130 {
 131   return m_buttons;
 132 }
 133
 134 int wxJoystick::GetPOVPosition(void) const
 135 {
 136   return 0;
 137 }
 138
 139 int wxJoystick::GetPOVCTSPosition(void) const
 140 {
 141   return 0;
 142 }
 143
 144 int wxJoystick::GetRudderPosition(void) const
 145 {
 146   return m_axe[4];
 147 }
 148
 149 int wxJoystick::GetUPosition(void) const
 150 {
 151   return m_axe[5];
 152 }
 153
 154 int wxJoystick::GetVPosition(void) const
 155 {
 156   return m_axe[6];
 157 }
 158
 159 int wxJoystick::GetMovementThreshold(void) const
 160 {
 161   return 0;
 162 }
 163
 164 void wxJoystick::SetMovementThreshold(int threshold)
 165 {
 166 }
 167
 168 ////////////////////////////////////////////////////////////////////////////
 169 // Capabilities
 170 ////////////////////////////////////////////////////////////////////////////
 171
 172 bool wxJoystick::IsOk(void) const
 173 {
 174   return (m_joystick != -1);
 175 }
 176
 177 int wxJoystick::GetNumberJoysticks(void) const
 178 {
 179   wxString dev_name;
 180   int fd, j;
 181
 182   for (j=0;j<2;j++) {
 183     dev_name.Printf("/dev/js%d", j);
 184     fd = open(dev_name, O_RDONLY);
 185     if (fd == -1)
 186       return j;
 187     close(fd);
 188   }
 189   return j;
 190 }
 191
 192 int wxJoystick::GetManufacturerId(void) const
 193 {
 194   return 0;
 195 }
 196
 197 int wxJoystick::GetProductId(void) const
 198 {
 199   return 0;
 200 }
 201
 202 wxString wxJoystick::GetProductName(void) const
 203 {
 204   return "";
 205 }
 206
 207 int wxJoystick::GetXMin(void) const
 208 {
 209   return JOYSTICK_AXE_MAX;
 210 }
 211
 212 int wxJoystick::GetYMin(void) const
 213 {
 214   return JOYSTICK_AXE_MAX;
 215 }
 216
 217 int wxJoystick::GetZMin(void) const
 218 {
 219   return JOYSTICK_AXE_MAX;
 220 }
 221
 222 int wxJoystick::GetXMax(void) const
 223 {
 224   return JOYSTICK_AXE_MAX;
 225 }
 226
 227 int wxJoystick::GetYMax(void) const
 228 {
 229   return JOYSTICK_AXE_MAX;
 230 }
 231
 232 int wxJoystick::GetZMax(void) const
 233 {
 234   return JOYSTICK_AXE_MAX;
 235 }
 236
 237 int wxJoystick::GetNumberButtons(void) const
 238 {
 239   int nb;
 240
 241   ioctl(m_joystick, JSIOCGBUTTONS, &nb);
 242
 243   return nb;
 244 }
 245
 246 int wxJoystick::GetNumberAxes(void) const
 247 {
 248   int nb;
 249
 250   ioctl(m_joystick, JSIOCGAXES, &nb);
 251
 252   return nb;
 253 }
 254
 255 int wxJoystick::GetMaxButtons(void) const
 256 {
 257   return 15; // internal
 258 }
 259
 260 int wxJoystick::GetMaxAxes(void) const
 261 {
 262   return 15; // internal
 263 }
 264
 265 int wxJoystick::GetPollingMin(void) const
 266 {
 267   return -1;
 268 }
 269
 270 int wxJoystick::GetPollingMax(void) const
 271 {
 272   return -1;
 273 }
 274
 275 int wxJoystick::GetRudderMin(void) const
 276 {
 277   return JOYSTICK_AXE_MIN;
 278 }
 279
 280 int wxJoystick::GetRudderMax(void) const
 281 {
 282   return JOYSTICK_AXE_MAX;
 283 }
 284
 285 int wxJoystick::GetUMin(void) const
 286 {
 287   return JOYSTICK_AXE_MIN;
 288 }
 289
 290 int wxJoystick::GetUMax(void) const
 291 {
 292   return JOYSTICK_AXE_MAX;
 293 }
 294
 295 int wxJoystick::GetVMin(void) const
 296 {
 297   return JOYSTICK_AXE_MIN;
 298 }
 299
 300 int wxJoystick::GetVMax(void) const
 301 {
 302   return JOYSTICK_AXE_MAX;
 303 }
 304
 305 bool wxJoystick::HasRudder(void) const
 306 {
 307   return GetNumberAxes() >= 4;
 308 }
 309
 310 bool wxJoystick::HasZ(void) const
 311 {
 312   return GetNumberAxes() >= 3;
 313 }
 314
 315 bool wxJoystick::HasU(void) const
 316 {
 317   return GetNumberAxes() >= 5;
 318 }
 319
 320 bool wxJoystick::HasV(void) const
 321 {
 322   return GetNumberAxes() >= 6;
 323 }
 324
 325 bool wxJoystick::HasPOV(void) const
 326 {
 327   return FALSE;
 328 }
 329
 330 bool wxJoystick::HasPOV4Dir(void) const
 331 {
 332   return FALSE;
 333 }
 334
 335 bool wxJoystick::HasPOVCTS(void) const
 336 {
 337   return FALSE;
 338 }
 339
 340 ////////////////////////////////////////////////////////////////////////////
 341 // Operations
 342 ////////////////////////////////////////////////////////////////////////////
 343
 344 bool wxJoystick::SetCapture(wxWindow* win, int pollingFreq = 0)
 345 {
 346   m_catchwin = win;
 347   m_polling = pollingFreq;
 348   return TRUE;
 349 }
 350
 351 bool wxJoystick::ReleaseCapture(void)
 352 {
 353   m_catchwin = NULL;
 354   m_polling = 0;
 355   return TRUE;
 356 }
 357