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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 | #include "wx/log.h" | |
23 | #endif //WX_PRECOMP | |
24 | ||
25 | #include "wx/thread.h" | |
26 | ||
27 | #include <linux/joystick.h> | |
28 | #include <sys/types.h> | |
29 | #include <sys/stat.h> | |
30 | #include <sys/time.h> | |
31 | #include <sys/ioctl.h> | |
32 | #include <fcntl.h> | |
33 | #include <unistd.h> | |
34 | ||
35 | #ifdef HAVE_SYS_SELECT_H | |
36 | # include <sys/select.h> | |
37 | #endif | |
38 | ||
39 | #include "wx/unix/private.h" | |
40 | ||
41 | enum { | |
42 | wxJS_AXIS_X = 0, | |
43 | wxJS_AXIS_Y, | |
44 | wxJS_AXIS_Z, | |
45 | wxJS_AXIS_RUDDER, | |
46 | wxJS_AXIS_U, | |
47 | wxJS_AXIS_V, | |
48 | ||
49 | wxJS_AXIS_MAX = 32767, | |
50 | wxJS_AXIS_MIN = -32767, | |
51 | wxJS_MAX_AXES = 15, | |
52 | wxJS_MAX_BUTTONS = sizeof(int) * 8 | |
53 | }; | |
54 | ||
55 | ||
56 | IMPLEMENT_DYNAMIC_CLASS(wxJoystick, wxObject) | |
57 | ||
58 | ||
59 | //////////////////////////////////////////////////////////////////////////// | |
60 | // Background thread for reading the joystick device | |
61 | //////////////////////////////////////////////////////////////////////////// | |
62 | ||
63 | class wxJoystickThread : public wxThread | |
64 | { | |
65 | public: | |
66 | wxJoystickThread(int device, int joystick); | |
67 | void* Entry(); | |
68 | ||
69 | private: | |
70 | void SendEvent(wxEventType type, long ts, int change = 0); | |
71 | int m_device; | |
72 | int m_joystick; | |
73 | wxPoint m_lastposition; | |
74 | int m_axe[wxJS_MAX_AXES]; | |
75 | int m_buttons; | |
76 | wxWindow* m_catchwin; | |
77 | int m_polling; | |
78 | int m_threshold; | |
79 | ||
80 | friend class wxJoystick; | |
81 | }; | |
82 | ||
83 | ||
84 | wxJoystickThread::wxJoystickThread(int device, int joystick) | |
85 | : m_device(device), | |
86 | m_joystick(joystick), | |
87 | m_lastposition(wxDefaultPosition), | |
88 | m_buttons(0), | |
89 | m_catchwin(NULL), | |
90 | m_polling(0), | |
91 | m_threshold(0) | |
92 | { | |
93 | memset(m_axe, 0, sizeof(m_axe)); | |
94 | } | |
95 | ||
96 | void wxJoystickThread::SendEvent(wxEventType type, long ts, int change) | |
97 | { | |
98 | wxJoystickEvent jwx_event(type, m_buttons, m_joystick, change); | |
99 | ||
100 | jwx_event.SetTimestamp(ts); | |
101 | jwx_event.SetPosition(m_lastposition); | |
102 | jwx_event.SetZPosition(m_axe[wxJS_AXIS_Z]); | |
103 | jwx_event.SetEventObject(m_catchwin); | |
104 | ||
105 | if (m_catchwin) | |
106 | m_catchwin->GetEventHandler()->AddPendingEvent(jwx_event); | |
107 | } | |
108 | ||
109 | void* wxJoystickThread::Entry() | |
110 | { | |
111 | struct js_event j_evt; | |
112 | fd_set read_fds; | |
113 | struct timeval time_out = {0, 0}; | |
114 | ||
115 | wxFD_ZERO(&read_fds); | |
116 | while (true) | |
117 | { | |
118 | if (TestDestroy()) | |
119 | break; | |
120 | ||
121 | // We use select when either polling or 'blocking' as even in the | |
122 | // blocking case we need to check TestDestroy periodically | |
123 | if (m_polling) | |
124 | time_out.tv_usec = m_polling * 1000; | |
125 | else | |
126 | time_out.tv_usec = 10 * 1000; // check at least every 10 msec in blocking case | |
127 | ||
128 | wxFD_SET(m_device, &read_fds); | |
129 | select(m_device+1, &read_fds, NULL, NULL, &time_out); | |
130 | if (wxFD_ISSET(m_device, &read_fds)) | |
131 | { | |
132 | memset(&j_evt, 0, sizeof(j_evt)); | |
133 | read(m_device, &j_evt, sizeof(j_evt)); | |
134 | ||
135 | //printf("time: %d\t value: %d\t type: %d\t number: %d\n", | |
136 | // j_evt.time, j_evt.value, j_evt.type, j_evt.number); | |
137 | ||
138 | if ((j_evt.type & JS_EVENT_AXIS) && (j_evt.number < wxJS_MAX_AXES)) | |
139 | { | |
140 | // Ignore invalid axis. | |
141 | if ( j_evt.number >= wxJS_MAX_AXES ) | |
142 | { | |
143 | wxLogDebug(wxS("Invalid axis index %d in joystick message."), | |
144 | j_evt.number); | |
145 | continue; | |
146 | } | |
147 | ||
148 | if ( (m_axe[j_evt.number] + m_threshold < j_evt.value) | |
149 | || (m_axe[j_evt.number] - m_threshold > j_evt.value) ) | |
150 | { | |
151 | m_axe[j_evt.number] = j_evt.value; | |
152 | ||
153 | switch (j_evt.number) | |
154 | { | |
155 | case wxJS_AXIS_X: | |
156 | m_lastposition.x = j_evt.value; | |
157 | SendEvent(wxEVT_JOY_MOVE, j_evt.time); | |
158 | break; | |
159 | case wxJS_AXIS_Y: | |
160 | m_lastposition.y = j_evt.value; | |
161 | SendEvent(wxEVT_JOY_MOVE, j_evt.time); | |
162 | break; | |
163 | case wxJS_AXIS_Z: | |
164 | SendEvent(wxEVT_JOY_ZMOVE, j_evt.time); | |
165 | break; | |
166 | default: | |
167 | SendEvent(wxEVT_JOY_MOVE, j_evt.time); | |
168 | // TODO: There should be a way to indicate that the event | |
169 | // is for some other axes. | |
170 | break; | |
171 | } | |
172 | } | |
173 | } | |
174 | ||
175 | if ( (j_evt.type & JS_EVENT_BUTTON) && (j_evt.number < wxJS_MAX_BUTTONS) ) | |
176 | { | |
177 | if (j_evt.value) | |
178 | { | |
179 | m_buttons |= (1 << j_evt.number); | |
180 | SendEvent(wxEVT_JOY_BUTTON_DOWN, j_evt.time, j_evt.number); | |
181 | } | |
182 | else | |
183 | { | |
184 | m_buttons &= ~(1 << j_evt.number); | |
185 | SendEvent(wxEVT_JOY_BUTTON_UP, j_evt.time, j_evt.number); | |
186 | } | |
187 | } | |
188 | } | |
189 | } | |
190 | ||
191 | close(m_device); | |
192 | return NULL; | |
193 | } | |
194 | ||
195 | ||
196 | //////////////////////////////////////////////////////////////////////////// | |
197 | ||
198 | wxJoystick::wxJoystick(int joystick) | |
199 | : m_device(-1), | |
200 | m_joystick(joystick), | |
201 | m_thread(NULL) | |
202 | { | |
203 | wxString dev_name; | |
204 | ||
205 | // old /dev structure | |
206 | dev_name.Printf( wxT("/dev/js%d"), joystick); | |
207 | m_device = open(dev_name.fn_str(), O_RDONLY); | |
208 | ||
209 | // new /dev structure with "input" subdirectory | |
210 | if (m_device == -1) | |
211 | { | |
212 | dev_name.Printf( wxT("/dev/input/js%d"), joystick); | |
213 | m_device = open(dev_name.fn_str(), O_RDONLY); | |
214 | } | |
215 | ||
216 | if (m_device != -1) | |
217 | { | |
218 | m_thread = new wxJoystickThread(m_device, m_joystick); | |
219 | m_thread->Create(); | |
220 | m_thread->Run(); | |
221 | } | |
222 | } | |
223 | ||
224 | ||
225 | wxJoystick::~wxJoystick() | |
226 | { | |
227 | ReleaseCapture(); | |
228 | if (m_thread) | |
229 | m_thread->Delete(); // It's detached so it will delete itself | |
230 | m_device = -1; | |
231 | } | |
232 | ||
233 | ||
234 | //////////////////////////////////////////////////////////////////////////// | |
235 | // State | |
236 | //////////////////////////////////////////////////////////////////////////// | |
237 | ||
238 | wxPoint wxJoystick::GetPosition() const | |
239 | { | |
240 | wxPoint pos(wxDefaultPosition); | |
241 | if (m_thread) pos = m_thread->m_lastposition; | |
242 | return pos; | |
243 | } | |
244 | ||
245 | int wxJoystick::GetPosition(unsigned axis) const | |
246 | { | |
247 | if (m_thread && (axis < wxJS_MAX_AXES)) | |
248 | return m_thread->m_axe[axis]; | |
249 | return 0; | |
250 | } | |
251 | ||
252 | int wxJoystick::GetZPosition() const | |
253 | { | |
254 | if (m_thread) | |
255 | return m_thread->m_axe[wxJS_AXIS_Z]; | |
256 | return 0; | |
257 | } | |
258 | ||
259 | int wxJoystick::GetButtonState() const | |
260 | { | |
261 | if (m_thread) | |
262 | return m_thread->m_buttons; | |
263 | return 0; | |
264 | } | |
265 | ||
266 | bool wxJoystick::GetButtonState(unsigned id) const | |
267 | { | |
268 | if (m_thread && (id < wxJS_MAX_BUTTONS)) | |
269 | return (m_thread->m_buttons & (1 << id)) != 0; | |
270 | return false; | |
271 | } | |
272 | ||
273 | int wxJoystick::GetPOVPosition() const | |
274 | { | |
275 | return -1; | |
276 | } | |
277 | ||
278 | int wxJoystick::GetPOVCTSPosition() const | |
279 | { | |
280 | return -1; | |
281 | } | |
282 | ||
283 | int wxJoystick::GetRudderPosition() const | |
284 | { | |
285 | if (m_thread) | |
286 | return m_thread->m_axe[wxJS_AXIS_RUDDER]; | |
287 | return 0; | |
288 | } | |
289 | ||
290 | int wxJoystick::GetUPosition() const | |
291 | { | |
292 | if (m_thread) | |
293 | return m_thread->m_axe[wxJS_AXIS_U]; | |
294 | return 0; | |
295 | } | |
296 | ||
297 | int wxJoystick::GetVPosition() const | |
298 | { | |
299 | if (m_thread) | |
300 | return m_thread->m_axe[wxJS_AXIS_V]; | |
301 | return 0; | |
302 | } | |
303 | ||
304 | int wxJoystick::GetMovementThreshold() const | |
305 | { | |
306 | if (m_thread) | |
307 | return m_thread->m_threshold; | |
308 | return 0; | |
309 | } | |
310 | ||
311 | void wxJoystick::SetMovementThreshold(int threshold) | |
312 | { | |
313 | if (m_thread) | |
314 | m_thread->m_threshold = threshold; | |
315 | } | |
316 | ||
317 | //////////////////////////////////////////////////////////////////////////// | |
318 | // Capabilities | |
319 | //////////////////////////////////////////////////////////////////////////// | |
320 | ||
321 | bool wxJoystick::IsOk() const | |
322 | { | |
323 | return (m_device != -1); | |
324 | } | |
325 | ||
326 | int wxJoystick::GetNumberJoysticks() | |
327 | { | |
328 | wxString dev_name; | |
329 | int fd, j; | |
330 | ||
331 | for (j=0; j<4; j++) { | |
332 | dev_name.Printf(wxT("/dev/js%d"), j); | |
333 | fd = open(dev_name.fn_str(), O_RDONLY); | |
334 | if (fd == -1) | |
335 | break; | |
336 | close(fd); | |
337 | } | |
338 | ||
339 | if (j == 0) { | |
340 | for (j=0; j<4; j++) { | |
341 | dev_name.Printf(wxT("/dev/input/js%d"), j); | |
342 | fd = open(dev_name.fn_str(), O_RDONLY); | |
343 | if (fd == -1) | |
344 | return j; | |
345 | close(fd); | |
346 | } | |
347 | } | |
348 | ||
349 | return j; | |
350 | } | |
351 | ||
352 | int wxJoystick::GetManufacturerId() const | |
353 | { | |
354 | return 0; | |
355 | } | |
356 | ||
357 | int wxJoystick::GetProductId() const | |
358 | { | |
359 | return 0; | |
360 | } | |
361 | ||
362 | wxString wxJoystick::GetProductName() const | |
363 | { | |
364 | char name[128]; | |
365 | ||
366 | if (ioctl(m_device, JSIOCGNAME(sizeof(name)), name) < 0) | |
367 | strcpy(name, "Unknown"); | |
368 | return wxString(name, wxConvLibc); | |
369 | } | |
370 | ||
371 | int wxJoystick::GetXMin() const | |
372 | { | |
373 | return wxJS_AXIS_MIN; | |
374 | } | |
375 | ||
376 | int wxJoystick::GetYMin() const | |
377 | { | |
378 | return wxJS_AXIS_MIN; | |
379 | } | |
380 | ||
381 | int wxJoystick::GetZMin() const | |
382 | { | |
383 | return wxJS_AXIS_MIN; | |
384 | } | |
385 | ||
386 | int wxJoystick::GetXMax() const | |
387 | { | |
388 | return wxJS_AXIS_MAX; | |
389 | } | |
390 | ||
391 | int wxJoystick::GetYMax() const | |
392 | { | |
393 | return wxJS_AXIS_MAX; | |
394 | } | |
395 | ||
396 | int wxJoystick::GetZMax() const | |
397 | { | |
398 | return wxJS_AXIS_MAX; | |
399 | } | |
400 | ||
401 | int wxJoystick::GetNumberButtons() const | |
402 | { | |
403 | char nb=0; | |
404 | ||
405 | if (m_device != -1) | |
406 | ioctl(m_device, JSIOCGBUTTONS, &nb); | |
407 | ||
408 | if ((int)nb > wxJS_MAX_BUTTONS) | |
409 | nb = wxJS_MAX_BUTTONS; | |
410 | ||
411 | return nb; | |
412 | } | |
413 | ||
414 | int wxJoystick::GetNumberAxes() const | |
415 | { | |
416 | char nb=0; | |
417 | ||
418 | if (m_device != -1) | |
419 | ioctl(m_device, JSIOCGAXES, &nb); | |
420 | ||
421 | if ((int)nb > wxJS_MAX_AXES) | |
422 | nb = wxJS_MAX_AXES; | |
423 | ||
424 | return nb; | |
425 | } | |
426 | ||
427 | int wxJoystick::GetMaxButtons() const | |
428 | { | |
429 | return wxJS_MAX_BUTTONS; // internal | |
430 | } | |
431 | ||
432 | int wxJoystick::GetMaxAxes() const | |
433 | { | |
434 | return wxJS_MAX_AXES; // internal | |
435 | } | |
436 | ||
437 | int wxJoystick::GetPollingMin() const | |
438 | { | |
439 | return 10; | |
440 | } | |
441 | ||
442 | int wxJoystick::GetPollingMax() const | |
443 | { | |
444 | return 1000; | |
445 | } | |
446 | ||
447 | int wxJoystick::GetRudderMin() const | |
448 | { | |
449 | return wxJS_AXIS_MIN; | |
450 | } | |
451 | ||
452 | int wxJoystick::GetRudderMax() const | |
453 | { | |
454 | return wxJS_AXIS_MAX; | |
455 | } | |
456 | ||
457 | int wxJoystick::GetUMin() const | |
458 | { | |
459 | return wxJS_AXIS_MIN; | |
460 | } | |
461 | ||
462 | int wxJoystick::GetUMax() const | |
463 | { | |
464 | return wxJS_AXIS_MAX; | |
465 | } | |
466 | ||
467 | int wxJoystick::GetVMin() const | |
468 | { | |
469 | return wxJS_AXIS_MIN; | |
470 | } | |
471 | ||
472 | int wxJoystick::GetVMax() const | |
473 | { | |
474 | return wxJS_AXIS_MAX; | |
475 | } | |
476 | ||
477 | bool wxJoystick::HasRudder() const | |
478 | { | |
479 | return GetNumberAxes() >= wxJS_AXIS_RUDDER; | |
480 | } | |
481 | ||
482 | bool wxJoystick::HasZ() const | |
483 | { | |
484 | return GetNumberAxes() >= wxJS_AXIS_Z; | |
485 | } | |
486 | ||
487 | bool wxJoystick::HasU() const | |
488 | { | |
489 | return GetNumberAxes() >= wxJS_AXIS_U; | |
490 | } | |
491 | ||
492 | bool wxJoystick::HasV() const | |
493 | { | |
494 | return GetNumberAxes() >= wxJS_AXIS_V; | |
495 | } | |
496 | ||
497 | bool wxJoystick::HasPOV() const | |
498 | { | |
499 | return false; | |
500 | } | |
501 | ||
502 | bool wxJoystick::HasPOV4Dir() const | |
503 | { | |
504 | return false; | |
505 | } | |
506 | ||
507 | bool wxJoystick::HasPOVCTS() const | |
508 | { | |
509 | return false; | |
510 | } | |
511 | ||
512 | //////////////////////////////////////////////////////////////////////////// | |
513 | // Operations | |
514 | //////////////////////////////////////////////////////////////////////////// | |
515 | ||
516 | bool wxJoystick::SetCapture(wxWindow* win, int pollingFreq) | |
517 | { | |
518 | if (m_thread) | |
519 | { | |
520 | m_thread->m_catchwin = win; | |
521 | m_thread->m_polling = pollingFreq; | |
522 | return true; | |
523 | } | |
524 | return false; | |
525 | } | |
526 | ||
527 | bool wxJoystick::ReleaseCapture() | |
528 | { | |
529 | if (m_thread) | |
530 | { | |
531 | m_thread->m_catchwin = NULL; | |
532 | m_thread->m_polling = 0; | |
533 | return true; | |
534 | } | |
535 | return false; | |
536 | } | |
537 | #endif // wxUSE_JOYSTICK |