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 "wx/defs.h"
  17
  18 #if wxUSE_JOYSTICK
  19
  20 #include "wx/joystick.h"
  21
  22 #include <linux/joystick.h>
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <sys/time.h>
  26 #include <sys/ioctl.h>
  27 #include <fcntl.h>
  28 #include <unistd.h>
  29
  30 #include "wx/event.h"
  31 #include "wx/window.h"
  32
  33 #define JOYSTICK_AXE_MAX 32767
  34 #define JOYSTICK_AXE_MIN -32767
  35
  36 IMPLEMENT_DYNAMIC_CLASS(wxJoystick, wxObject)
  37
  38 wxJoystick::wxJoystick(int joystick)
  39 {
  40   wxString dev_name;
  41   // Assume it's the same device name on all Linux systems ...
  42   dev_name.Printf("/dev/js%d", (joystick == wxJOYSTICK1) ? 0 : 1);
  43
  44   m_joystick = open(dev_name, O_RDWR);
  45   m_lastposition = wxPoint(-1, -1);
  46   for (int i=0;i<15;i++)
  47     m_axe[i] = 0;
  48   if (m_joystick != -1)
  49     Create();
  50 }
  51
  52 ////////////////////////////////////////////////////////////////////////////
  53 // Background thread
  54 ////////////////////////////////////////////////////////////////////////////
  55 void *wxJoystick::Entry(void)
  56 {
  57   struct js_event j_evt;
  58   wxJoystickEvent jwx_event;
  59   fd_set read_fds;
  60   struct timeval time_out = {0, 0};
  61
  62   FD_ZERO(&read_fds);
  63   while (1) {
  64     TestDestroy();
  65
  66     if (m_polling) {
  67       FD_SET(m_joystick, &read_fds);
  68       select(m_joystick+1, &read_fds, NULL, NULL, &time_out);
  69       if (FD_ISSET(m_joystick, &read_fds))
  70         read(m_joystick, &j_evt, sizeof(j_evt));
  71       else
  72         j_evt.type = 0;
  73     } else {
  74       read(m_joystick, &j_evt, sizeof(j_evt));
  75     }
  76
  77     if ((j_evt.type & JS_EVENT_AXIS) == JS_EVENT_AXIS) {
  78       switch (j_evt.number) {
  79       case 1:
  80         m_lastposition.x = j_evt.value;
  81         jwx_event.SetEventType(wxEVT_JOY_MOVE);
  82         break;
  83       case 2:
  84         m_lastposition.y = j_evt.value;
  85         jwx_event.SetEventType(wxEVT_JOY_MOVE);
  86         break;
  87       case 3:
  88         m_axe[3] = j_evt.value;
  89         jwx_event.SetEventType(wxEVT_JOY_ZMOVE);
  90         break;
  91       default:
  92         m_axe[j_evt.number] = j_evt.value;
  93         jwx_event.SetEventType(wxEVT_JOY_MOVE);
  94         break;
  95       }
  96       jwx_event.SetPosition(m_lastposition);
  97       jwx_event.SetZPosition(m_axe[3]);
  98     }
  99     if ((j_evt.type & JS_EVENT_BUTTON) == JS_EVENT_BUTTON) {
 100       register int mask = 1 << j_evt.number;
 101       char button = m_buttons & mask;
 102
 103       m_buttons &= ~mask;
 104       if (button) {
 105         jwx_event.SetEventType(wxEVT_JOY_BUTTON_UP);
 106       } else {
 107         jwx_event.SetEventType(wxEVT_JOY_BUTTON_DOWN);
 108         m_buttons |= mask;
 109       }
 110
 111       jwx_event.SetButtonState(m_buttons);
 112       jwx_event.SetButtonChange(j_evt.number);
 113     }
 114   }
 115   if (m_catchwin)
 116     m_catchwin->ProcessEvent(jwx_event);
 117   if (m_polling)
 118     usleep(m_polling*1000);
 119 }
 120
 121 ////////////////////////////////////////////////////////////////////////////
 122 // State
 123 ////////////////////////////////////////////////////////////////////////////
 124
 125 wxPoint wxJoystick::GetPosition(void) const
 126 {
 127   return m_lastposition;
 128 }
 129
 130 int wxJoystick::GetZPosition(void) const
 131 {
 132   return m_axe[3];
 133 }
 134
 135 int wxJoystick::GetButtonState(void) const
 136 {
 137   return m_buttons;
 138 }
 139
 140 int wxJoystick::GetPOVPosition(void) const
 141 {
 142   return 0;
 143 }
 144
 145 int wxJoystick::GetPOVCTSPosition(void) const
 146 {
 147   return 0;
 148 }
 149
 150 int wxJoystick::GetRudderPosition(void) const
 151 {
 152   return m_axe[4];
 153 }
 154
 155 int wxJoystick::GetUPosition(void) const
 156 {
 157   return m_axe[5];
 158 }
 159
 160 int wxJoystick::GetVPosition(void) const
 161 {
 162   return m_axe[6];
 163 }
 164
 165 int wxJoystick::GetMovementThreshold(void) const
 166 {
 167   return 0;
 168 }
 169
 170 void wxJoystick::SetMovementThreshold(int threshold)
 171 {
 172 }
 173
 174 ////////////////////////////////////////////////////////////////////////////
 175 // Capabilities
 176 ////////////////////////////////////////////////////////////////////////////
 177
 178 bool wxJoystick::IsOk(void) const
 179 {
 180   return (m_joystick != -1);
 181 }
 182
 183 int wxJoystick::GetNumberJoysticks(void) const
 184 {
 185   wxString dev_name;
 186   int fd, j;
 187
 188   for (j=0;j<2;j++) {
 189     dev_name.Printf("/dev/js%d", j);
 190     fd = open(dev_name, O_RDONLY);
 191     if (fd == -1)
 192       return j;
 193     close(fd);
 194   }
 195   return j;
 196 }
 197
 198 int wxJoystick::GetManufacturerId(void) const
 199 {
 200   return 0;
 201 }
 202
 203 int wxJoystick::GetProductId(void) const
 204 {
 205   return 0;
 206 }
 207
 208 wxString wxJoystick::GetProductName(void) const
 209 {
 210   return wxT("");
 211 }
 212
 213 int wxJoystick::GetXMin(void) const
 214 {
 215   return JOYSTICK_AXE_MAX;
 216 }
 217
 218 int wxJoystick::GetYMin(void) const
 219 {
 220   return JOYSTICK_AXE_MAX;
 221 }
 222
 223 int wxJoystick::GetZMin(void) const
 224 {
 225   return JOYSTICK_AXE_MAX;
 226 }
 227
 228 int wxJoystick::GetXMax(void) const
 229 {
 230   return JOYSTICK_AXE_MAX;
 231 }
 232
 233 int wxJoystick::GetYMax(void) const
 234 {
 235   return JOYSTICK_AXE_MAX;
 236 }
 237
 238 int wxJoystick::GetZMax(void) const
 239 {
 240   return JOYSTICK_AXE_MAX;
 241 }
 242
 243 int wxJoystick::GetNumberButtons(void) const
 244 {
 245   int nb;
 246
 247   ioctl(m_joystick, JSIOCGBUTTONS, &nb);
 248
 249   return nb;
 250 }
 251
 252 int wxJoystick::GetNumberAxes(void) const
 253 {
 254   int nb;
 255
 256   ioctl(m_joystick, JSIOCGAXES, &nb);
 257
 258   return nb;
 259 }
 260
 261 int wxJoystick::GetMaxButtons(void) const
 262 {
 263   return 15; // internal
 264 }
 265
 266 int wxJoystick::GetMaxAxes(void) const
 267 {
 268   return 15; // internal
 269 }
 270
 271 int wxJoystick::GetPollingMin(void) const
 272 {
 273   return -1;
 274 }
 275
 276 int wxJoystick::GetPollingMax(void) const
 277 {
 278   return -1;
 279 }
 280
 281 int wxJoystick::GetRudderMin(void) const
 282 {
 283   return JOYSTICK_AXE_MIN;
 284 }
 285
 286 int wxJoystick::GetRudderMax(void) const
 287 {
 288   return JOYSTICK_AXE_MAX;
 289 }
 290
 291 int wxJoystick::GetUMin(void) const
 292 {
 293   return JOYSTICK_AXE_MIN;
 294 }
 295
 296 int wxJoystick::GetUMax(void) const
 297 {
 298   return JOYSTICK_AXE_MAX;
 299 }
 300
 301 int wxJoystick::GetVMin(void) const
 302 {
 303   return JOYSTICK_AXE_MIN;
 304 }
 305
 306 int wxJoystick::GetVMax(void) const
 307 {
 308   return JOYSTICK_AXE_MAX;
 309 }
 310
 311 bool wxJoystick::HasRudder(void) const
 312 {
 313   return GetNumberAxes() >= 4;
 314 }
 315
 316 bool wxJoystick::HasZ(void) const
 317 {
 318   return GetNumberAxes() >= 3;
 319 }
 320
 321 bool wxJoystick::HasU(void) const
 322 {
 323   return GetNumberAxes() >= 5;
 324 }
 325
 326 bool wxJoystick::HasV(void) const
 327 {
 328   return GetNumberAxes() >= 6;
 329 }
 330
 331 bool wxJoystick::HasPOV(void) const
 332 {
 333   return FALSE;
 334 }
 335
 336 bool wxJoystick::HasPOV4Dir(void) const
 337 {
 338   return FALSE;
 339 }
 340
 341 bool wxJoystick::HasPOVCTS(void) const
 342 {
 343   return FALSE;
 344 }
 345
 346 ////////////////////////////////////////////////////////////////////////////
 347 // Operations
 348 ////////////////////////////////////////////////////////////////////////////
 349
 350 bool wxJoystick::SetCapture(wxWindow* win, int pollingFreq = 0)
 351 {
 352   m_catchwin = win;
 353   m_polling = pollingFreq;
 354   return TRUE;
 355 }
 356
 357 bool wxJoystick::ReleaseCapture(void)
 358 {
 359   m_catchwin = NULL;
 360   m_polling = 0;
 361   return TRUE;
 362 }
 363 #endif  // wxUSE_JOYSTICK
 364