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6 | #include <cstring> |
6 | #include <cstring> |
7 | |
7 | |
8 | #include "keyboard.h" |
8 | #include "keyboard.h" |
9 | #include "command.h" |
9 | #include "command.h" |
10 | |
10 | |
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11 | /* an intro to the data structure: |
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12 | * |
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13 | * vector keymap[] is grouped. |
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14 | * |
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15 | * inside each group, elements are sorted by the criteria given by compare_priority(). |
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16 | * the lookup of keysym is done in two steps: |
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17 | * 1) locate the group corresponds to the keysym; |
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18 | * 2) do a linear search inside the group. |
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19 | * |
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20 | * array hash[] effectively defines a map from a keysym to a group in keymap[]. |
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21 | * |
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22 | * each group has its address(the index of first group element in keymap[]), |
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23 | * which is computed and stored in hash[]. |
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24 | * hash[] stores the addresses in the form of: |
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25 | * index: 0 I1 I2 I3 In |
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26 | * value: 0...0, A1...A1, A2...A2, A3...A3, ..., An...An |
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27 | * where |
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28 | * A1 = 0; |
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29 | * Ai+1 = N1 + N2 + ... + Ni. |
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30 | * it is computed from hash_budget_size[]: |
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31 | * index: 0 I1 I2 I3 In |
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32 | * value: 0...0, N1, 0...0, N2, 0...0, N3, ..., Nn, 0...0 |
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33 | * 0...0, 0.......0, N1.....N1, N1+N2...N1+N2, ... (the compution of hash[]) |
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34 | * or we can say |
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35 | * hash_budget_size[Ii] = Ni; hash_budget_size[elsewhere] = 0, |
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36 | * where |
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37 | * set {I1, I2, ..., In} = { hashkey of keymap[0]->keysym, ..., keymap[keymap.size-1]->keysym } |
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38 | * where hashkey of keymap[i]->keysym = keymap[i]->keysym & KEYSYM_HASH_MASK |
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39 | * n(the number of groups) = the number of non-zero member of hash_budget_size[]; |
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40 | * Ni(the size of group i) = hash_budget_size[Ii]. |
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41 | */ |
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42 | |
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43 | #if STOCK_KEYMAP |
11 | //////////////////////////////////////////////////////////////////////////////// |
44 | //////////////////////////////////////////////////////////////////////////////// |
12 | // default keycode translation map and keyevent handlers |
45 | // default keycode translation map and keyevent handlers |
13 | |
46 | |
14 | keysym_t keyboard_manager::stock_keymap[] = { |
47 | keysym_t keyboard_manager::stock_keymap[] = { |
15 | /* examples */ |
48 | /* examples */ |
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32 | //{ '.', ControlMask, 1, keysym_t::NORMAL, "\033<C-.>"}, |
65 | //{ '.', ControlMask, 1, keysym_t::NORMAL, "\033<C-.>"}, |
33 | //{ '0', ControlMask, 10, keysym_t::RANGE, "0" "\033<C-%c>"}, |
66 | //{ '0', ControlMask, 10, keysym_t::RANGE, "0" "\033<C-%c>"}, |
34 | //{ '0', MetaMask|ControlMask, 10, keysym_t::RANGE, "0" "\033<M-C-%c>"}, |
67 | //{ '0', MetaMask|ControlMask, 10, keysym_t::RANGE, "0" "\033<M-C-%c>"}, |
35 | //{ 'a', MetaMask|ControlMask, 26, keysym_t::RANGE, "a" "\033<M-C-%c>"}, |
68 | //{ 'a', MetaMask|ControlMask, 26, keysym_t::RANGE, "a" "\033<M-C-%c>"}, |
36 | }; |
69 | }; |
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70 | #endif |
37 | |
71 | |
38 | static void |
72 | static void |
39 | output_string (rxvt_term *rt, const char *str) |
73 | output_string (rxvt_term *rt, const char *str) |
40 | { |
74 | { |
41 | if (strncmp (str, "command:", 8) == 0) |
75 | if (strncmp (str, "command:", 8) == 0) |
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207 | } |
241 | } |
208 | |
242 | |
209 | void |
243 | void |
210 | keyboard_manager::register_done () |
244 | keyboard_manager::register_done () |
211 | { |
245 | { |
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246 | #if STOCK_KEYMAP |
212 | unsigned int i, n = sizeof (stock_keymap) / sizeof (keysym_t); |
247 | int n = sizeof (stock_keymap) / sizeof (keysym_t); |
213 | |
248 | |
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249 | //TODO: shield against repeated calls and empty keymap |
214 | if (keymap.back () != &stock_keymap[n - 1]) |
250 | //if (keymap.back () != &stock_keymap[n - 1]) |
215 | for (i = 0; i < n; ++i) |
251 | for (int i = 0; i < n; ++i) |
216 | register_keymap (&stock_keymap[i]); |
252 | register_keymap (&stock_keymap[i]); |
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253 | #endif |
217 | |
254 | |
218 | purge_duplicate_keymap (); |
255 | purge_duplicate_keymap (); |
219 | |
256 | |
220 | setup_hash (); |
257 | setup_hash (); |
221 | } |
258 | } |
222 | |
259 | |
223 | bool |
260 | bool |
224 | keyboard_manager::dispatch (rxvt_term *term, KeySym keysym, unsigned int state) |
261 | keyboard_manager::dispatch (rxvt_term *term, KeySym keysym, unsigned int state) |
225 | { |
262 | { |
226 | assert (hash[0] == 0 && "register_done() need to be called"); |
263 | assert (hash[0] == 0 && "register_done() need to be called"); |
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264 | |
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265 | state &= OtherModMask; // mask out uninteresting modifiers |
227 | |
266 | |
228 | if (state & term->ModMetaMask) state |= MetaMask; |
267 | if (state & term->ModMetaMask) state |= MetaMask; |
229 | if (state & term->ModNumLockMask) state |= NumLockMask; |
268 | if (state & term->ModNumLockMask) state |= NumLockMask; |
230 | if (state & term->ModLevel3Mask) state |= Level3Mask; |
269 | if (state & term->ModLevel3Mask) state |= Level3Mask; |
231 | |
270 | |
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239 | const keysym_t &key = *keymap [index]; |
278 | const keysym_t &key = *keymap [index]; |
240 | |
279 | |
241 | int keysym_offset = keysym - key.keysym; |
280 | int keysym_offset = keysym - key.keysym; |
242 | |
281 | |
243 | wchar_t *wc = rxvt_utf8towcs (key.str); |
282 | wchar_t *wc = rxvt_utf8towcs (key.str); |
244 | |
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245 | char *str = rxvt_wcstombs (wc); |
283 | char *str = rxvt_wcstombs (wc); |
246 | // TODO: do translations, unescaping etc, here (allow \u escape etc.) |
284 | // TODO: do (some) translations, unescaping etc, here (allow \u escape etc.) |
247 | free (wc); |
285 | free (wc); |
248 | |
286 | |
249 | switch (key.type) |
287 | switch (key.type) |
250 | { |
288 | { |
251 | case keysym_t::NORMAL: |
289 | case keysym_t::NORMAL: |
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294 | free (str); |
332 | free (str); |
295 | |
333 | |
296 | return true; |
334 | return true; |
297 | } |
335 | } |
298 | else |
336 | else |
299 | { |
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300 | // fprintf(stderr,"[%x:%x]",state,keysym); |
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301 | return false; |
337 | return false; |
302 | } |
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303 | } |
338 | } |
304 | |
339 | |
305 | // purge duplicate keymap entries |
340 | // purge duplicate keymap entries |
306 | void keyboard_manager::purge_duplicate_keymap () |
341 | void keyboard_manager::purge_duplicate_keymap () |
307 | { |
342 | { |
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317 | if (i < keymap.size ()) |
352 | if (i < keymap.size ()) |
318 | { |
353 | { |
319 | keymap[i] = keymap.back (); |
354 | keymap[i] = keymap.back (); |
320 | keymap.pop_back (); |
355 | keymap.pop_back (); |
321 | } |
356 | } |
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357 | |
322 | break; |
358 | break; |
323 | } |
359 | } |
324 | } |
360 | } |
325 | } |
361 | } |
326 | } |
362 | } |
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334 | uint16_t hash_budget_counter[KEYSYM_HASH_BUDGETS]; // #elements in each budget |
370 | uint16_t hash_budget_counter[KEYSYM_HASH_BUDGETS]; // #elements in each budget |
335 | |
371 | |
336 | memset (hash_budget_size, 0, sizeof (hash_budget_size)); |
372 | memset (hash_budget_size, 0, sizeof (hash_budget_size)); |
337 | memset (hash_budget_counter, 0, sizeof (hash_budget_counter)); |
373 | memset (hash_budget_counter, 0, sizeof (hash_budget_counter)); |
338 | |
374 | |
339 | // count keysyms for corresponding hash budgets |
375 | // determine hash bucket size |
340 | for (i = 0; i < keymap.size (); ++i) |
376 | for (i = 0; i < keymap.size (); ++i) |
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377 | for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j >= 0; --j) |
341 | { |
378 | { |
342 | hashkey = keymap [i]->keysym & KEYSYM_HASH_MASK; |
379 | hashkey = (keymap [i]->keysym + j) & KEYSYM_HASH_MASK; |
343 | ++hash_budget_size [hashkey]; |
380 | ++hash_budget_size [hashkey]; |
344 | } |
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345 | |
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346 | // a keysym_t with range>1 is counted one more time for every keysym that |
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347 | // lies in its range |
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348 | for (i = 0; i < keymap.size (); ++i) |
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349 | { |
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350 | if (keymap[i]->range > 1) |
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351 | { |
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352 | for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j > 0; --j) |
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353 | { |
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354 | hashkey = ((keymap [i]->keysym + j) & KEYSYM_HASH_MASK); |
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355 | if (hash_budget_size [hashkey]) |
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356 | ++hash_budget_size [hashkey]; |
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357 | } |
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358 | } |
381 | } |
359 | } |
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360 | |
382 | |
361 | // now we know the size of each budget |
383 | // now we know the size of each budget |
362 | // compute the index of each budget |
384 | // compute the index of each budget |
363 | hash [0] = 0; |
385 | hash [0] = 0; |
364 | for (index = 0, i = 1; i < KEYSYM_HASH_BUDGETS; ++i) |
386 | for (index = 0, i = 1; i < KEYSYM_HASH_BUDGETS; ++i) |
365 | { |
387 | { |
366 | index += hash_budget_size [i - 1]; |
388 | index += hash_budget_size [i - 1]; |
367 | hash[i] = (hash_budget_size [i] ? index : hash [i - 1]); |
389 | hash [i] = index; |
368 | } |
390 | } |
369 | |
391 | |
370 | // and allocate just enough space |
392 | // and allocate just enough space |
371 | sorted_keymap.insert (sorted_keymap.begin (), index + hash_budget_size [i - 1], 0); |
393 | sorted_keymap.insert (sorted_keymap.begin (), index + hash_budget_size [i - 1], 0); |
372 | |
394 | |
373 | // fill in sorted_keymap |
395 | // fill in sorted_keymap |
374 | // it is sorted in each budget |
396 | // it is sorted in each budget |
375 | for (i = 0; i < keymap.size (); ++i) |
397 | for (i = 0; i < keymap.size (); ++i) |
376 | { |
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377 | for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j >= 0; --j) |
398 | for (int j = min (keymap [i]->range, KEYSYM_HASH_BUDGETS) - 1; j >= 0; --j) |
378 | { |
399 | { |
379 | hashkey = ((keymap [i]->keysym + j) & KEYSYM_HASH_MASK); |
400 | hashkey = (keymap [i]->keysym + j) & KEYSYM_HASH_MASK; |
380 | |
401 | |
381 | if (hash_budget_size [hashkey]) |
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382 | { |
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383 | index = hash [hashkey] + hash_budget_counter [hashkey]; |
402 | index = hash [hashkey] + hash_budget_counter [hashkey]; |
384 | |
403 | |
385 | while (index > hash [hashkey] |
404 | while (index > hash [hashkey] |
386 | && compare_priority (keymap [i], sorted_keymap [index - 1]) > 0) |
405 | && compare_priority (keymap [i], sorted_keymap [index - 1]) > 0) |
387 | { |
406 | { |
388 | sorted_keymap [index] = sorted_keymap [index - 1]; |
407 | sorted_keymap [index] = sorted_keymap [index - 1]; |
389 | --index; |
408 | --index; |
390 | } |
409 | } |
391 | |
410 | |
392 | sorted_keymap [index] = keymap [i]; |
411 | sorted_keymap [index] = keymap [i]; |
393 | ++hash_budget_counter [hashkey]; |
412 | ++hash_budget_counter [hashkey]; |
394 | } |
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395 | } |
413 | } |
396 | } |
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397 | |
414 | |
398 | keymap.swap (sorted_keymap); |
415 | keymap.swap (sorted_keymap); |
399 | |
416 | |
400 | #if defined (DEBUG_STRICT) || defined (DEBUG_KEYBOARD) |
417 | #if defined (DEBUG_STRICT) || defined (DEBUG_KEYBOARD) |
401 | // check for invariants |
418 | // check for invariants |
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433 | int |
450 | int |
434 | keyboard_manager::find_keysym (KeySym keysym, unsigned int state) |
451 | keyboard_manager::find_keysym (KeySym keysym, unsigned int state) |
435 | { |
452 | { |
436 | int hashkey = keysym & KEYSYM_HASH_MASK; |
453 | int hashkey = keysym & KEYSYM_HASH_MASK; |
437 | unsigned int index = hash [hashkey]; |
454 | unsigned int index = hash [hashkey]; |
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455 | unsigned int end = hashkey < KEYSYM_HASH_BUDGETS - 1 |
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456 | ? hash [hashkey + 1] |
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457 | : keymap.size (); |
438 | |
458 | |
439 | for (; index < keymap.size (); ++index) |
459 | for (; index < end; ++index) |
440 | { |
460 | { |
441 | keysym_t *key = keymap [index]; |
461 | keysym_t *key = keymap [index]; |
442 | |
462 | |
443 | if (key->keysym <= keysym && key->keysym + key->range > keysym |
463 | if (key->keysym <= keysym && keysym < key->keysym + key->range |
444 | // match only the specified bits in state and ignore others |
464 | // match only the specified bits in state and ignore others |
445 | && (key->state & state) == key->state) |
465 | && (key->state & state) == key->state) |
446 | return index; |
466 | return index; |
447 | else if ((key->keysym & KEYSYM_HASH_MASK) > hashkey && key->range == 1) |
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448 | return -1; |
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449 | } |
467 | } |
450 | |
468 | |
451 | return -1; |
469 | return -1; |
452 | } |
470 | } |
453 | |
471 | |