| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: src/unix/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 licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | // for compilers that support precompilation, includes "wx.h". |
| 13 | #include "wx/wxprec.h" |
| 14 | |
| 15 | #if wxUSE_JOYSTICK |
| 16 | |
| 17 | #include "wx/joystick.h" |
| 18 | |
| 19 | #ifndef WX_PRECOMP |
| 20 | #include "wx/event.h" |
| 21 | #include "wx/window.h" |
| 22 | #endif //WX_PRECOMP |
| 23 | |
| 24 | #include "wx/thread.h" |
| 25 | |
| 26 | #include <linux/joystick.h> |
| 27 | #include <sys/types.h> |
| 28 | #include <sys/stat.h> |
| 29 | #include <sys/time.h> |
| 30 | #include <sys/ioctl.h> |
| 31 | #include <fcntl.h> |
| 32 | #include <unistd.h> |
| 33 | |
| 34 | #ifdef HAVE_SYS_SELECT_H |
| 35 | # include <sys/select.h> |
| 36 | #endif |
| 37 | |
| 38 | #include "wx/unix/private.h" |
| 39 | |
| 40 | enum { |
| 41 | wxJS_AXIS_X = 0, |
| 42 | wxJS_AXIS_Y, |
| 43 | wxJS_AXIS_Z, |
| 44 | wxJS_AXIS_RUDDER, |
| 45 | wxJS_AXIS_U, |
| 46 | wxJS_AXIS_V, |
| 47 | |
| 48 | wxJS_AXIS_MAX = 32767, |
| 49 | wxJS_AXIS_MIN = -32767, |
| 50 | wxJS_MAX_AXES = 15, |
| 51 | wxJS_MAX_BUTTONS = sizeof(int) * 8 |
| 52 | }; |
| 53 | |
| 54 | |
| 55 | IMPLEMENT_DYNAMIC_CLASS(wxJoystick, wxObject) |
| 56 | |
| 57 | |
| 58 | //////////////////////////////////////////////////////////////////////////// |
| 59 | // Background thread for reading the joystick device |
| 60 | //////////////////////////////////////////////////////////////////////////// |
| 61 | |
| 62 | class wxJoystickThread : public wxThread |
| 63 | { |
| 64 | public: |
| 65 | wxJoystickThread(int device, int joystick); |
| 66 | void* Entry(); |
| 67 | |
| 68 | private: |
| 69 | void SendEvent(wxEventType type, long ts, int change = 0); |
| 70 | int m_device; |
| 71 | int m_joystick; |
| 72 | wxPoint m_lastposition; |
| 73 | int m_axe[wxJS_MAX_AXES]; |
| 74 | int m_buttons; |
| 75 | wxWindow* m_catchwin; |
| 76 | int m_polling; |
| 77 | int m_threshold; |
| 78 | |
| 79 | friend class wxJoystick; |
| 80 | }; |
| 81 | |
| 82 | |
| 83 | wxJoystickThread::wxJoystickThread(int device, int joystick) |
| 84 | : m_device(device), |
| 85 | m_joystick(joystick), |
| 86 | m_lastposition(wxDefaultPosition), |
| 87 | m_buttons(0), |
| 88 | m_catchwin(NULL), |
| 89 | m_polling(0), |
| 90 | m_threshold(0) |
| 91 | { |
| 92 | memset(m_axe, 0, sizeof(m_axe)); |
| 93 | } |
| 94 | |
| 95 | void wxJoystickThread::SendEvent(wxEventType type, long ts, int change) |
| 96 | { |
| 97 | wxJoystickEvent jwx_event(type, m_buttons, m_joystick, change); |
| 98 | |
| 99 | jwx_event.SetTimestamp(ts); |
| 100 | jwx_event.SetPosition(m_lastposition); |
| 101 | jwx_event.SetZPosition(m_axe[wxJS_AXIS_Z]); |
| 102 | jwx_event.SetEventObject(m_catchwin); |
| 103 | |
| 104 | if (m_catchwin) |
| 105 | m_catchwin->GetEventHandler()->AddPendingEvent(jwx_event); |
| 106 | } |
| 107 | |
| 108 | void* wxJoystickThread::Entry() |
| 109 | { |
| 110 | struct js_event j_evt; |
| 111 | fd_set read_fds; |
| 112 | struct timeval time_out = {0, 0}; |
| 113 | |
| 114 | wxFD_ZERO(&read_fds); |
| 115 | while (true) |
| 116 | { |
| 117 | if (TestDestroy()) |
| 118 | break; |
| 119 | |
| 120 | // We use select when either polling or 'blocking' as even in the |
| 121 | // blocking case we need to check TestDestroy periodically |
| 122 | if (m_polling) |
| 123 | time_out.tv_usec = m_polling * 1000; |
| 124 | else |
| 125 | time_out.tv_usec = 10 * 1000; // check at least every 10 msec in blocking case |
| 126 | |
| 127 | wxFD_SET(m_device, &read_fds); |
| 128 | select(m_device+1, &read_fds, NULL, NULL, &time_out); |
| 129 | if (wxFD_ISSET(m_device, &read_fds)) |
| 130 | { |
| 131 | memset(&j_evt, 0, sizeof(j_evt)); |
| 132 | read(m_device, &j_evt, sizeof(j_evt)); |
| 133 | |
| 134 | //printf("time: %d\t value: %d\t type: %d\t number: %d\n", |
| 135 | // j_evt.time, j_evt.value, j_evt.type, j_evt.number); |
| 136 | |
| 137 | if ((j_evt.type & JS_EVENT_AXIS) && (j_evt.number < wxJS_MAX_AXES)) |
| 138 | { |
| 139 | if ( (m_axe[j_evt.number] + m_threshold < j_evt.value) |
| 140 | || (m_axe[j_evt.number] - m_threshold > j_evt.value) ) |
| 141 | { |
| 142 | m_axe[j_evt.number] = j_evt.value; |
| 143 | |
| 144 | switch (j_evt.number) |
| 145 | { |
| 146 | case wxJS_AXIS_X: |
| 147 | m_lastposition.x = j_evt.value; |
| 148 | SendEvent(wxEVT_JOY_MOVE, j_evt.time); |
| 149 | break; |
| 150 | case wxJS_AXIS_Y: |
| 151 | m_lastposition.y = j_evt.value; |
| 152 | SendEvent(wxEVT_JOY_MOVE, j_evt.time); |
| 153 | break; |
| 154 | case wxJS_AXIS_Z: |
| 155 | SendEvent(wxEVT_JOY_ZMOVE, j_evt.time); |
| 156 | break; |
| 157 | default: |
| 158 | SendEvent(wxEVT_JOY_MOVE, j_evt.time); |
| 159 | // TODO: There should be a way to indicate that the event |
| 160 | // is for some other axes. |
| 161 | break; |
| 162 | } |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | if ( (j_evt.type & JS_EVENT_BUTTON) && (j_evt.number < wxJS_MAX_BUTTONS) ) |
| 167 | { |
| 168 | if (j_evt.value) |
| 169 | { |
| 170 | m_buttons |= (1 << j_evt.number); |
| 171 | SendEvent(wxEVT_JOY_BUTTON_DOWN, j_evt.time, j_evt.number); |
| 172 | } |
| 173 | else |
| 174 | { |
| 175 | m_buttons &= ~(1 << j_evt.number); |
| 176 | SendEvent(wxEVT_JOY_BUTTON_UP, j_evt.time, j_evt.number); |
| 177 | } |
| 178 | } |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | close(m_device); |
| 183 | return NULL; |
| 184 | } |
| 185 | |
| 186 | |
| 187 | //////////////////////////////////////////////////////////////////////////// |
| 188 | |
| 189 | wxJoystick::wxJoystick(int joystick) |
| 190 | : m_device(-1), |
| 191 | m_joystick(joystick), |
| 192 | m_thread(NULL) |
| 193 | { |
| 194 | wxString dev_name; |
| 195 | |
| 196 | // old /dev structure |
| 197 | dev_name.Printf( wxT("/dev/js%d"), joystick); |
| 198 | m_device = open(dev_name.fn_str(), O_RDONLY); |
| 199 | |
| 200 | // new /dev structure with "input" subdirectory |
| 201 | if (m_device == -1) |
| 202 | { |
| 203 | dev_name.Printf( wxT("/dev/input/js%d"), joystick); |
| 204 | m_device = open(dev_name.fn_str(), O_RDONLY); |
| 205 | } |
| 206 | |
| 207 | if (m_device != -1) |
| 208 | { |
| 209 | m_thread = new wxJoystickThread(m_device, m_joystick); |
| 210 | m_thread->Create(); |
| 211 | m_thread->Run(); |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | |
| 216 | wxJoystick::~wxJoystick() |
| 217 | { |
| 218 | ReleaseCapture(); |
| 219 | if (m_thread) |
| 220 | m_thread->Delete(); // It's detached so it will delete itself |
| 221 | m_device = -1; |
| 222 | } |
| 223 | |
| 224 | |
| 225 | //////////////////////////////////////////////////////////////////////////// |
| 226 | // State |
| 227 | //////////////////////////////////////////////////////////////////////////// |
| 228 | |
| 229 | wxPoint wxJoystick::GetPosition() const |
| 230 | { |
| 231 | wxPoint pos(wxDefaultPosition); |
| 232 | if (m_thread) pos = m_thread->m_lastposition; |
| 233 | return pos; |
| 234 | } |
| 235 | |
| 236 | int wxJoystick::GetPosition(unsigned axis) const |
| 237 | { |
| 238 | if (m_thread && (axis < wxJS_MAX_AXES)) |
| 239 | return m_thread->m_axe[axis]; |
| 240 | return 0; |
| 241 | } |
| 242 | |
| 243 | int wxJoystick::GetZPosition() const |
| 244 | { |
| 245 | if (m_thread) |
| 246 | return m_thread->m_axe[wxJS_AXIS_Z]; |
| 247 | return 0; |
| 248 | } |
| 249 | |
| 250 | int wxJoystick::GetButtonState() const |
| 251 | { |
| 252 | if (m_thread) |
| 253 | return m_thread->m_buttons; |
| 254 | return 0; |
| 255 | } |
| 256 | |
| 257 | bool wxJoystick::GetButtonState(unsigned id) const |
| 258 | { |
| 259 | if (m_thread && (id < wxJS_MAX_BUTTONS)) |
| 260 | return (m_thread->m_buttons & (1 << id)) != 0; |
| 261 | return false; |
| 262 | } |
| 263 | |
| 264 | int wxJoystick::GetPOVPosition() const |
| 265 | { |
| 266 | return -1; |
| 267 | } |
| 268 | |
| 269 | int wxJoystick::GetPOVCTSPosition() const |
| 270 | { |
| 271 | return -1; |
| 272 | } |
| 273 | |
| 274 | int wxJoystick::GetRudderPosition() const |
| 275 | { |
| 276 | if (m_thread) |
| 277 | return m_thread->m_axe[wxJS_AXIS_RUDDER]; |
| 278 | return 0; |
| 279 | } |
| 280 | |
| 281 | int wxJoystick::GetUPosition() const |
| 282 | { |
| 283 | if (m_thread) |
| 284 | return m_thread->m_axe[wxJS_AXIS_U]; |
| 285 | return 0; |
| 286 | } |
| 287 | |
| 288 | int wxJoystick::GetVPosition() const |
| 289 | { |
| 290 | if (m_thread) |
| 291 | return m_thread->m_axe[wxJS_AXIS_V]; |
| 292 | return 0; |
| 293 | } |
| 294 | |
| 295 | int wxJoystick::GetMovementThreshold() const |
| 296 | { |
| 297 | if (m_thread) |
| 298 | return m_thread->m_threshold; |
| 299 | return 0; |
| 300 | } |
| 301 | |
| 302 | void wxJoystick::SetMovementThreshold(int threshold) |
| 303 | { |
| 304 | if (m_thread) |
| 305 | m_thread->m_threshold = threshold; |
| 306 | } |
| 307 | |
| 308 | //////////////////////////////////////////////////////////////////////////// |
| 309 | // Capabilities |
| 310 | //////////////////////////////////////////////////////////////////////////// |
| 311 | |
| 312 | bool wxJoystick::IsOk() const |
| 313 | { |
| 314 | return (m_device != -1); |
| 315 | } |
| 316 | |
| 317 | int wxJoystick::GetNumberJoysticks() |
| 318 | { |
| 319 | wxString dev_name; |
| 320 | int fd, j; |
| 321 | |
| 322 | for (j=0; j<4; j++) { |
| 323 | dev_name.Printf(wxT("/dev/js%d"), j); |
| 324 | fd = open(dev_name.fn_str(), O_RDONLY); |
| 325 | if (fd == -1) |
| 326 | break; |
| 327 | close(fd); |
| 328 | } |
| 329 | |
| 330 | if (j == 0) { |
| 331 | for (j=0; j<4; j++) { |
| 332 | dev_name.Printf(wxT("/dev/input/js%d"), j); |
| 333 | fd = open(dev_name.fn_str(), O_RDONLY); |
| 334 | if (fd == -1) |
| 335 | return j; |
| 336 | close(fd); |
| 337 | } |
| 338 | } |
| 339 | |
| 340 | return j; |
| 341 | } |
| 342 | |
| 343 | int wxJoystick::GetManufacturerId() const |
| 344 | { |
| 345 | return 0; |
| 346 | } |
| 347 | |
| 348 | int wxJoystick::GetProductId() const |
| 349 | { |
| 350 | return 0; |
| 351 | } |
| 352 | |
| 353 | wxString wxJoystick::GetProductName() const |
| 354 | { |
| 355 | char name[128]; |
| 356 | |
| 357 | if (ioctl(m_device, JSIOCGNAME(sizeof(name)), name) < 0) |
| 358 | strcpy(name, "Unknown"); |
| 359 | return wxString(name, wxConvLibc); |
| 360 | } |
| 361 | |
| 362 | int wxJoystick::GetXMin() const |
| 363 | { |
| 364 | return wxJS_AXIS_MIN; |
| 365 | } |
| 366 | |
| 367 | int wxJoystick::GetYMin() const |
| 368 | { |
| 369 | return wxJS_AXIS_MIN; |
| 370 | } |
| 371 | |
| 372 | int wxJoystick::GetZMin() const |
| 373 | { |
| 374 | return wxJS_AXIS_MIN; |
| 375 | } |
| 376 | |
| 377 | int wxJoystick::GetXMax() const |
| 378 | { |
| 379 | return wxJS_AXIS_MAX; |
| 380 | } |
| 381 | |
| 382 | int wxJoystick::GetYMax() const |
| 383 | { |
| 384 | return wxJS_AXIS_MAX; |
| 385 | } |
| 386 | |
| 387 | int wxJoystick::GetZMax() const |
| 388 | { |
| 389 | return wxJS_AXIS_MAX; |
| 390 | } |
| 391 | |
| 392 | int wxJoystick::GetNumberButtons() const |
| 393 | { |
| 394 | char nb=0; |
| 395 | |
| 396 | if (m_device != -1) |
| 397 | ioctl(m_device, JSIOCGBUTTONS, &nb); |
| 398 | |
| 399 | if ((int)nb > wxJS_MAX_BUTTONS) |
| 400 | nb = wxJS_MAX_BUTTONS; |
| 401 | |
| 402 | return nb; |
| 403 | } |
| 404 | |
| 405 | int wxJoystick::GetNumberAxes() const |
| 406 | { |
| 407 | char nb=0; |
| 408 | |
| 409 | if (m_device != -1) |
| 410 | ioctl(m_device, JSIOCGAXES, &nb); |
| 411 | |
| 412 | if ((int)nb > wxJS_MAX_AXES) |
| 413 | nb = wxJS_MAX_AXES; |
| 414 | |
| 415 | return nb; |
| 416 | } |
| 417 | |
| 418 | int wxJoystick::GetMaxButtons() const |
| 419 | { |
| 420 | return wxJS_MAX_BUTTONS; // internal |
| 421 | } |
| 422 | |
| 423 | int wxJoystick::GetMaxAxes() const |
| 424 | { |
| 425 | return wxJS_MAX_AXES; // internal |
| 426 | } |
| 427 | |
| 428 | int wxJoystick::GetPollingMin() const |
| 429 | { |
| 430 | return 10; |
| 431 | } |
| 432 | |
| 433 | int wxJoystick::GetPollingMax() const |
| 434 | { |
| 435 | return 1000; |
| 436 | } |
| 437 | |
| 438 | int wxJoystick::GetRudderMin() const |
| 439 | { |
| 440 | return wxJS_AXIS_MIN; |
| 441 | } |
| 442 | |
| 443 | int wxJoystick::GetRudderMax() const |
| 444 | { |
| 445 | return wxJS_AXIS_MAX; |
| 446 | } |
| 447 | |
| 448 | int wxJoystick::GetUMin() const |
| 449 | { |
| 450 | return wxJS_AXIS_MIN; |
| 451 | } |
| 452 | |
| 453 | int wxJoystick::GetUMax() const |
| 454 | { |
| 455 | return wxJS_AXIS_MAX; |
| 456 | } |
| 457 | |
| 458 | int wxJoystick::GetVMin() const |
| 459 | { |
| 460 | return wxJS_AXIS_MIN; |
| 461 | } |
| 462 | |
| 463 | int wxJoystick::GetVMax() const |
| 464 | { |
| 465 | return wxJS_AXIS_MAX; |
| 466 | } |
| 467 | |
| 468 | bool wxJoystick::HasRudder() const |
| 469 | { |
| 470 | return GetNumberAxes() >= wxJS_AXIS_RUDDER; |
| 471 | } |
| 472 | |
| 473 | bool wxJoystick::HasZ() const |
| 474 | { |
| 475 | return GetNumberAxes() >= wxJS_AXIS_Z; |
| 476 | } |
| 477 | |
| 478 | bool wxJoystick::HasU() const |
| 479 | { |
| 480 | return GetNumberAxes() >= wxJS_AXIS_U; |
| 481 | } |
| 482 | |
| 483 | bool wxJoystick::HasV() const |
| 484 | { |
| 485 | return GetNumberAxes() >= wxJS_AXIS_V; |
| 486 | } |
| 487 | |
| 488 | bool wxJoystick::HasPOV() const |
| 489 | { |
| 490 | return false; |
| 491 | } |
| 492 | |
| 493 | bool wxJoystick::HasPOV4Dir() const |
| 494 | { |
| 495 | return false; |
| 496 | } |
| 497 | |
| 498 | bool wxJoystick::HasPOVCTS() const |
| 499 | { |
| 500 | return false; |
| 501 | } |
| 502 | |
| 503 | //////////////////////////////////////////////////////////////////////////// |
| 504 | // Operations |
| 505 | //////////////////////////////////////////////////////////////////////////// |
| 506 | |
| 507 | bool wxJoystick::SetCapture(wxWindow* win, int pollingFreq) |
| 508 | { |
| 509 | if (m_thread) |
| 510 | { |
| 511 | m_thread->m_catchwin = win; |
| 512 | m_thread->m_polling = pollingFreq; |
| 513 | return true; |
| 514 | } |
| 515 | return false; |
| 516 | } |
| 517 | |
| 518 | bool wxJoystick::ReleaseCapture() |
| 519 | { |
| 520 | if (m_thread) |
| 521 | { |
| 522 | m_thread->m_catchwin = NULL; |
| 523 | m_thread->m_polling = 0; |
| 524 | return true; |
| 525 | } |
| 526 | return false; |
| 527 | } |
| 528 | #endif // wxUSE_JOYSTICK |