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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 licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) | |
13 | #pragma implementation "joystick.h" | |
14 | #endif | |
15 | ||
16 | // for compilers that support precompilation, includes "wx.h". | |
17 | #include "wx/wxprec.h" | |
18 | ||
19 | #include "wx/defs.h" | |
20 | ||
21 | #if wxUSE_JOYSTICK | |
22 | ||
23 | #include "wx/joystick.h" | |
24 | ||
25 | #include <linux/joystick.h> | |
26 | #include <sys/types.h> | |
27 | #include <sys/stat.h> | |
28 | #include <sys/time.h> | |
29 | #include <sys/ioctl.h> | |
30 | #include <fcntl.h> | |
31 | #include <unistd.h> | |
32 | ||
33 | #include "wx/event.h" | |
34 | #include "wx/window.h" | |
35 | ||
36 | enum { | |
37 | wxJS_AXIS_X = 0, | |
38 | wxJS_AXIS_Y, | |
39 | wxJS_AXIS_Z, | |
40 | wxJS_AXIS_RUDDER, | |
41 | wxJS_AXIS_U, | |
42 | wxJS_AXIS_V, | |
43 | ||
44 | wxJS_AXIS_MAX = 32767, | |
45 | wxJS_AXIS_MIN = -32767 | |
46 | }; | |
47 | ||
48 | ||
49 | IMPLEMENT_DYNAMIC_CLASS(wxJoystick, wxObject) | |
50 | ||
51 | ||
52 | //////////////////////////////////////////////////////////////////////////// | |
53 | // Background thread for reading the joystick device | |
54 | //////////////////////////////////////////////////////////////////////////// | |
55 | ||
56 | class wxJoystickThread : public wxThread | |
57 | { | |
58 | public: | |
59 | wxJoystickThread(int device, int joystick); | |
60 | void* Entry(); | |
61 | ||
62 | private: | |
63 | int m_device; | |
64 | int m_joystick; | |
65 | wxPoint m_lastposition; | |
66 | int m_axe[15]; | |
67 | int m_buttons; | |
68 | wxWindow* m_catchwin; | |
69 | int m_polling; | |
70 | ||
71 | friend class wxJoystick; | |
72 | }; | |
73 | ||
74 | ||
75 | wxJoystickThread::wxJoystickThread(int device, int joystick) | |
76 | : m_device(device), | |
77 | m_joystick(joystick), | |
78 | m_lastposition(wxDefaultPosition), | |
79 | m_buttons(0), | |
80 | m_catchwin(NULL), | |
81 | m_polling(0) | |
82 | { | |
83 | for (int i=0; i<15; i++) | |
84 | m_axe[i] = 0; | |
85 | } | |
86 | ||
87 | ||
88 | void* wxJoystickThread::Entry() | |
89 | { | |
90 | struct js_event j_evt; | |
91 | fd_set read_fds; | |
92 | struct timeval time_out = {0, 0}; | |
93 | ||
94 | FD_ZERO(&read_fds); | |
95 | while (true) | |
96 | { | |
97 | if (TestDestroy()) | |
98 | break; | |
99 | ||
100 | // We use select when either polling or 'blocking' as even in the | |
101 | // blocking case we need to check TestDestroy periodically | |
102 | if (m_polling) | |
103 | time_out.tv_usec = m_polling * 1000; | |
104 | else | |
105 | time_out.tv_usec = 10 * 1000; // check at least every 10 msec in blocking case | |
106 | ||
107 | FD_SET(m_device, &read_fds); | |
108 | select(m_device+1, &read_fds, NULL, NULL, &time_out); | |
109 | if (FD_ISSET(m_device, &read_fds)) | |
110 | { | |
111 | memset(&j_evt, 0, sizeof(j_evt)); | |
112 | read(m_device, &j_evt, sizeof(j_evt)); | |
113 | ||
114 | //printf("time: %d\t value: %d\t type: %d\t number: %d\n", | |
115 | // j_evt.time, j_evt.value, j_evt.type, j_evt.number); | |
116 | ||
117 | wxJoystickEvent jwx_event; | |
118 | ||
119 | if (j_evt.type & JS_EVENT_AXIS) | |
120 | { | |
121 | m_axe[j_evt.number] = j_evt.value; | |
122 | ||
123 | switch (j_evt.number) | |
124 | { | |
125 | case wxJS_AXIS_X: | |
126 | m_lastposition.x = j_evt.value; | |
127 | jwx_event.SetEventType(wxEVT_JOY_MOVE); | |
128 | break; | |
129 | case wxJS_AXIS_Y: | |
130 | m_lastposition.y = j_evt.value; | |
131 | jwx_event.SetEventType(wxEVT_JOY_MOVE); | |
132 | break; | |
133 | case wxJS_AXIS_Z: | |
134 | jwx_event.SetEventType(wxEVT_JOY_ZMOVE); | |
135 | break; | |
136 | default: | |
137 | jwx_event.SetEventType(wxEVT_JOY_MOVE); | |
138 | // TODO: There should be a way to indicate that the event | |
139 | // is for some other axes. | |
140 | break; | |
141 | } | |
142 | } | |
143 | ||
144 | if (j_evt.type & JS_EVENT_BUTTON) | |
145 | { | |
146 | if (j_evt.value) | |
147 | { | |
148 | m_buttons |= (1 << j_evt.number); | |
149 | jwx_event.SetEventType(wxEVT_JOY_BUTTON_DOWN); | |
150 | } | |
151 | else | |
152 | { | |
153 | m_buttons &= ~(1 << j_evt.number); | |
154 | jwx_event.SetEventType(wxEVT_JOY_BUTTON_UP); | |
155 | } | |
156 | ||
157 | jwx_event.SetButtonChange(j_evt.number); | |
158 | ||
159 | jwx_event.SetTimestamp(j_evt.time); | |
160 | jwx_event.SetJoystick(m_joystick); | |
161 | jwx_event.SetButtonState(m_buttons); | |
162 | jwx_event.SetPosition(m_lastposition); | |
163 | jwx_event.SetZPosition(m_axe[3]); | |
164 | jwx_event.SetEventObject(m_catchwin); | |
165 | ||
166 | if (m_catchwin) | |
167 | m_catchwin->AddPendingEvent(jwx_event); | |
168 | } | |
169 | } | |
170 | } | |
171 | ||
172 | close(m_device); | |
173 | return NULL; | |
174 | } | |
175 | ||
176 | ||
177 | //////////////////////////////////////////////////////////////////////////// | |
178 | ||
179 | wxJoystick::wxJoystick(int joystick) | |
180 | : m_device(-1), | |
181 | m_joystick(joystick), | |
182 | m_thread(NULL) | |
183 | { | |
184 | wxString dev_name; | |
185 | ||
186 | // old /dev structure | |
187 | dev_name.Printf( wxT("/dev/js%d"), (joystick == wxJOYSTICK1) ? 0 : 1); | |
188 | m_device = open(dev_name.fn_str(), O_RDONLY); | |
189 | ||
190 | // new /dev structure with "input" subdirectory | |
191 | if (m_device == -1) | |
192 | { | |
193 | dev_name.Printf( wxT("/dev/input/js%d"), (joystick == wxJOYSTICK1) ? 0 : 1); | |
194 | m_device = open(dev_name.fn_str(), O_RDONLY); | |
195 | } | |
196 | ||
197 | if (m_device != -1) | |
198 | { | |
199 | m_thread = new wxJoystickThread(m_device, m_joystick); | |
200 | m_thread->Create(); | |
201 | m_thread->Run(); | |
202 | } | |
203 | } | |
204 | ||
205 | ||
206 | wxJoystick::~wxJoystick() | |
207 | { | |
208 | ReleaseCapture(); | |
209 | if (m_thread) | |
210 | m_thread->Delete(); // It's detached so it will delete itself | |
211 | m_device = -1; | |
212 | } | |
213 | ||
214 | ||
215 | //////////////////////////////////////////////////////////////////////////// | |
216 | // State | |
217 | //////////////////////////////////////////////////////////////////////////// | |
218 | ||
219 | wxPoint wxJoystick::GetPosition() const | |
220 | { | |
221 | wxPoint pos(wxDefaultPosition); | |
222 | if (m_thread) pos = m_thread->m_lastposition; | |
223 | return pos; | |
224 | } | |
225 | ||
226 | int wxJoystick::GetZPosition() const | |
227 | { | |
228 | if (m_thread) | |
229 | return m_thread->m_axe[wxJS_AXIS_Z]; | |
230 | return 0; | |
231 | } | |
232 | ||
233 | int wxJoystick::GetButtonState() const | |
234 | { | |
235 | if (m_thread) | |
236 | return m_thread->m_buttons; | |
237 | return 0; | |
238 | } | |
239 | ||
240 | int wxJoystick::GetPOVPosition() const | |
241 | { | |
242 | return -1; | |
243 | } | |
244 | ||
245 | int wxJoystick::GetPOVCTSPosition() const | |
246 | { | |
247 | return -1; | |
248 | } | |
249 | ||
250 | int wxJoystick::GetRudderPosition() const | |
251 | { | |
252 | if (m_thread) | |
253 | return m_thread->m_axe[wxJS_AXIS_RUDDER]; | |
254 | return 0; | |
255 | } | |
256 | ||
257 | int wxJoystick::GetUPosition() const | |
258 | { | |
259 | if (m_thread) | |
260 | return m_thread->m_axe[wxJS_AXIS_U]; | |
261 | return 0; | |
262 | } | |
263 | ||
264 | int wxJoystick::GetVPosition() const | |
265 | { | |
266 | if (m_thread) | |
267 | return m_thread->m_axe[wxJS_AXIS_V]; | |
268 | return 0; | |
269 | } | |
270 | ||
271 | int wxJoystick::GetMovementThreshold() const | |
272 | { | |
273 | return 0; | |
274 | } | |
275 | ||
276 | void wxJoystick::SetMovementThreshold(int threshold) | |
277 | { | |
278 | } | |
279 | ||
280 | //////////////////////////////////////////////////////////////////////////// | |
281 | // Capabilities | |
282 | //////////////////////////////////////////////////////////////////////////// | |
283 | ||
284 | bool wxJoystick::IsOk() const | |
285 | { | |
286 | return (m_device != -1); | |
287 | } | |
288 | ||
289 | int wxJoystick::GetNumberJoysticks() const | |
290 | { | |
291 | wxString dev_name; | |
292 | int fd, j; | |
293 | ||
294 | for (j=0; j<4; j++) { | |
295 | dev_name.Printf(wxT("/dev/js%d"), j); | |
296 | fd = open(dev_name.fn_str(), O_RDONLY); | |
297 | if (fd == -1) | |
298 | return j; | |
299 | close(fd); | |
300 | } | |
301 | return j; | |
302 | } | |
303 | ||
304 | int wxJoystick::GetManufacturerId() const | |
305 | { | |
306 | return 0; | |
307 | } | |
308 | ||
309 | int wxJoystick::GetProductId() const | |
310 | { | |
311 | return 0; | |
312 | } | |
313 | ||
314 | wxString wxJoystick::GetProductName() const | |
315 | { | |
316 | char name[128]; | |
317 | ||
318 | if (ioctl(m_device, JSIOCGNAME(sizeof(name)), name) < 0) | |
319 | strcpy(name, "Unknown"); | |
320 | return wxString(name, wxConvLibc); | |
321 | } | |
322 | ||
323 | int wxJoystick::GetXMin() const | |
324 | { | |
325 | return wxJS_AXIS_MIN; | |
326 | } | |
327 | ||
328 | int wxJoystick::GetYMin() const | |
329 | { | |
330 | return wxJS_AXIS_MIN; | |
331 | } | |
332 | ||
333 | int wxJoystick::GetZMin() const | |
334 | { | |
335 | return wxJS_AXIS_MIN; | |
336 | } | |
337 | ||
338 | int wxJoystick::GetXMax() const | |
339 | { | |
340 | return wxJS_AXIS_MAX; | |
341 | } | |
342 | ||
343 | int wxJoystick::GetYMax() const | |
344 | { | |
345 | return wxJS_AXIS_MAX; | |
346 | } | |
347 | ||
348 | int wxJoystick::GetZMax() const | |
349 | { | |
350 | return wxJS_AXIS_MAX; | |
351 | } | |
352 | ||
353 | int wxJoystick::GetNumberButtons() const | |
354 | { | |
355 | char nb=0; | |
356 | ||
357 | if (m_device != -1) | |
358 | ioctl(m_device, JSIOCGBUTTONS, &nb); | |
359 | ||
360 | return nb; | |
361 | } | |
362 | ||
363 | int wxJoystick::GetNumberAxes() const | |
364 | { | |
365 | char nb=0; | |
366 | ||
367 | if (m_device != -1) | |
368 | ioctl(m_device, JSIOCGAXES, &nb); | |
369 | ||
370 | return nb; | |
371 | } | |
372 | ||
373 | int wxJoystick::GetMaxButtons() const | |
374 | { | |
375 | return 15; // internal | |
376 | } | |
377 | ||
378 | int wxJoystick::GetMaxAxes() const | |
379 | { | |
380 | return 15; // internal | |
381 | } | |
382 | ||
383 | int wxJoystick::GetPollingMin() const | |
384 | { | |
385 | return 10; | |
386 | } | |
387 | ||
388 | int wxJoystick::GetPollingMax() const | |
389 | { | |
390 | return 1000; | |
391 | } | |
392 | ||
393 | int wxJoystick::GetRudderMin() const | |
394 | { | |
395 | return wxJS_AXIS_MIN; | |
396 | } | |
397 | ||
398 | int wxJoystick::GetRudderMax() const | |
399 | { | |
400 | return wxJS_AXIS_MAX; | |
401 | } | |
402 | ||
403 | int wxJoystick::GetUMin() const | |
404 | { | |
405 | return wxJS_AXIS_MIN; | |
406 | } | |
407 | ||
408 | int wxJoystick::GetUMax() const | |
409 | { | |
410 | return wxJS_AXIS_MAX; | |
411 | } | |
412 | ||
413 | int wxJoystick::GetVMin() const | |
414 | { | |
415 | return wxJS_AXIS_MIN; | |
416 | } | |
417 | ||
418 | int wxJoystick::GetVMax() const | |
419 | { | |
420 | return wxJS_AXIS_MAX; | |
421 | } | |
422 | ||
423 | bool wxJoystick::HasRudder() const | |
424 | { | |
425 | return GetNumberAxes() >= wxJS_AXIS_RUDDER; | |
426 | } | |
427 | ||
428 | bool wxJoystick::HasZ() const | |
429 | { | |
430 | return GetNumberAxes() >= wxJS_AXIS_Z; | |
431 | } | |
432 | ||
433 | bool wxJoystick::HasU() const | |
434 | { | |
435 | return GetNumberAxes() >= wxJS_AXIS_U; | |
436 | } | |
437 | ||
438 | bool wxJoystick::HasV() const | |
439 | { | |
440 | return GetNumberAxes() >= wxJS_AXIS_V; | |
441 | } | |
442 | ||
443 | bool wxJoystick::HasPOV() const | |
444 | { | |
445 | return false; | |
446 | } | |
447 | ||
448 | bool wxJoystick::HasPOV4Dir() const | |
449 | { | |
450 | return false; | |
451 | } | |
452 | ||
453 | bool wxJoystick::HasPOVCTS() const | |
454 | { | |
455 | return false; | |
456 | } | |
457 | ||
458 | //////////////////////////////////////////////////////////////////////////// | |
459 | // Operations | |
460 | //////////////////////////////////////////////////////////////////////////// | |
461 | ||
462 | bool wxJoystick::SetCapture(wxWindow* win, int pollingFreq) | |
463 | { | |
464 | if (m_thread) | |
465 | { | |
466 | m_thread->m_catchwin = win; | |
467 | m_thread->m_polling = pollingFreq; | |
468 | return true; | |
469 | } | |
470 | return false; | |
471 | } | |
472 | ||
473 | bool wxJoystick::ReleaseCapture() | |
474 | { | |
475 | if (m_thread) | |
476 | { | |
477 | m_thread->m_catchwin = NULL; | |
478 | m_thread->m_polling = 0; | |
479 | return true; | |
480 | } | |
481 | return false; | |
482 | } | |
483 | #endif // wxUSE_JOYSTICK | |
484 |