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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 | #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 |