This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
/
SDL_keyboard.c
901 lines (844 loc) · 18.5 KB
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2010 Sam Lantinga
4
5
This library is free software; you can redistribute it and/or
6
modify it under the terms of the GNU Lesser General Public
7
License as published by the Free Software Foundation; either
8
version 2.1 of the License, or (at your option) any later version.
9
10
11
12
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13
Lesser General Public License for more details.
14
15
16
17
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19
Sam Lantinga
20
slouken@libsdl.org
21
*/
22
#include "SDL_config.h"
23
24
25
26
/* General keyboard handling code for SDL */
#include "SDL_timer.h"
27
#include "SDL_events.h"
28
29
30
31
#include "SDL_events_c.h"
#include "SDL_sysevents.h"
32
/* Global keyboard information */
33
34
35
36
37
38
39
40
41
42
43
44
45
typedef struct SDL_Keyboard SDL_Keyboard;
struct SDL_Keyboard
{
/* Data common to all keyboards */
SDL_Window *focus;
Uint16 modstate;
Uint8 keystate[SDL_NUM_SCANCODES];
SDLKey keymap[SDL_NUM_SCANCODES];
};
static SDL_Keyboard SDL_keyboard;
46
47
static const SDLKey SDL_default_keymap[SDL_NUM_SCANCODES] = {
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
0, 0, 0, 0,
'a',
'b',
'c',
'd',
'e',
'f',
'g',
'h',
'i',
'j',
'k',
'l',
'm',
'n',
'o',
'p',
'q',
'r',
's',
't',
'u',
'v',
'w',
'x',
'y',
'z',
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
'0',
SDLK_RETURN,
SDLK_ESCAPE,
SDLK_BACKSPACE,
SDLK_TAB,
SDLK_SPACE,
'-',
'=',
'[',
']',
'\\',
'#',
';',
'\'',
'`',
',',
'.',
'/',
SDLK_CAPSLOCK,
SDLK_F1,
SDLK_F2,
SDLK_F3,
SDLK_F4,
SDLK_F5,
SDLK_F6,
SDLK_F7,
SDLK_F8,
SDLK_F9,
SDLK_F10,
SDLK_F11,
SDLK_F12,
SDLK_PRINTSCREEN,
SDLK_SCROLLLOCK,
SDLK_PAUSE,
SDLK_INSERT,
SDLK_HOME,
SDLK_PAGEUP,
SDLK_DELETE,
SDLK_END,
SDLK_PAGEDOWN,
SDLK_RIGHT,
SDLK_LEFT,
SDLK_DOWN,
SDLK_UP,
SDLK_NUMLOCKCLEAR,
SDLK_KP_DIVIDE,
SDLK_KP_MULTIPLY,
SDLK_KP_MINUS,
SDLK_KP_PLUS,
SDLK_KP_ENTER,
SDLK_KP_1,
SDLK_KP_2,
SDLK_KP_3,
SDLK_KP_4,
SDLK_KP_5,
SDLK_KP_6,
SDLK_KP_7,
SDLK_KP_8,
SDLK_KP_9,
SDLK_KP_0,
SDLK_KP_PERIOD,
0,
SDLK_APPLICATION,
SDLK_POWER,
SDLK_KP_EQUALS,
SDLK_F13,
SDLK_F14,
SDLK_F15,
SDLK_F16,
SDLK_F17,
SDLK_F18,
SDLK_F19,
SDLK_F20,
SDLK_F21,
SDLK_F22,
SDLK_F23,
SDLK_F24,
SDLK_EXECUTE,
SDLK_HELP,
SDLK_MENU,
SDLK_SELECT,
SDLK_STOP,
SDLK_AGAIN,
SDLK_UNDO,
SDLK_CUT,
SDLK_COPY,
SDLK_PASTE,
SDLK_FIND,
SDLK_MUTE,
SDLK_VOLUMEUP,
SDLK_VOLUMEDOWN,
0, 0, 0,
SDLK_KP_COMMA,
SDLK_KP_EQUALSAS400,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
SDLK_ALTERASE,
SDLK_SYSREQ,
SDLK_CANCEL,
SDLK_CLEAR,
SDLK_PRIOR,
SDLK_RETURN2,
SDLK_SEPARATOR,
SDLK_OUT,
SDLK_OPER,
SDLK_CLEARAGAIN,
SDLK_CRSEL,
SDLK_EXSEL,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
SDLK_KP_00,
SDLK_KP_000,
SDLK_THOUSANDSSEPARATOR,
SDLK_DECIMALSEPARATOR,
SDLK_CURRENCYUNIT,
SDLK_CURRENCYSUBUNIT,
SDLK_KP_LEFTPAREN,
SDLK_KP_RIGHTPAREN,
SDLK_KP_LEFTBRACE,
SDLK_KP_RIGHTBRACE,
SDLK_KP_TAB,
SDLK_KP_BACKSPACE,
SDLK_KP_A,
SDLK_KP_B,
SDLK_KP_C,
SDLK_KP_D,
SDLK_KP_E,
SDLK_KP_F,
SDLK_KP_XOR,
SDLK_KP_POWER,
SDLK_KP_PERCENT,
SDLK_KP_LESS,
SDLK_KP_GREATER,
SDLK_KP_AMPERSAND,
SDLK_KP_DBLAMPERSAND,
SDLK_KP_VERTICALBAR,
SDLK_KP_DBLVERTICALBAR,
SDLK_KP_COLON,
SDLK_KP_HASH,
SDLK_KP_SPACE,
SDLK_KP_AT,
SDLK_KP_EXCLAM,
SDLK_KP_MEMSTORE,
SDLK_KP_MEMRECALL,
SDLK_KP_MEMCLEAR,
SDLK_KP_MEMADD,
SDLK_KP_MEMSUBTRACT,
SDLK_KP_MEMMULTIPLY,
SDLK_KP_MEMDIVIDE,
SDLK_KP_PLUSMINUS,
SDLK_KP_CLEAR,
SDLK_KP_CLEARENTRY,
SDLK_KP_BINARY,
SDLK_KP_OCTAL,
SDLK_KP_DECIMAL,
SDLK_KP_HEXADECIMAL,
0, 0,
SDLK_LCTRL,
SDLK_LSHIFT,
SDLK_LALT,
SDLK_LGUI,
SDLK_RCTRL,
SDLK_RSHIFT,
SDLK_RALT,
SDLK_RGUI,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
SDLK_MODE,
SDLK_AUDIONEXT,
SDLK_AUDIOPREV,
SDLK_AUDIOSTOP,
SDLK_AUDIOPLAY,
SDLK_AUDIOMUTE,
SDLK_MEDIASELECT,
255
SDLK_WWW,
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
SDLK_MAIL,
SDLK_CALCULATOR,
SDLK_COMPUTER,
SDLK_AC_SEARCH,
SDLK_AC_HOME,
SDLK_AC_BACK,
SDLK_AC_FORWARD,
SDLK_AC_STOP,
SDLK_AC_REFRESH,
SDLK_AC_BOOKMARKS,
SDLK_BRIGHTNESSDOWN,
SDLK_BRIGHTNESSUP,
SDLK_DISPLAYSWITCH,
SDLK_KBDILLUMTOGGLE,
SDLK_KBDILLUMDOWN,
SDLK_KBDILLUMUP,
SDLK_EJECT,
SDLK_SLEEP,
};
static const char *SDL_scancode_names[SDL_NUM_SCANCODES] = {
NULL, NULL, NULL, NULL,
"A",
"B",
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z",
"1",
"2",
"3",
"4",
"5",
"6",
"7",
"8",
"9",
"0",
"Return",
"Escape",
"Backspace",
"Tab",
"Space",
"-",
"=",
"[",
"]",
"\\",
"#",
";",
"'",
"`",
",",
".",
"/",
"CapsLock",
"F1",
"F2",
"F3",
"F4",
"F5",
"F6",
"F7",
"F8",
"F9",
"F10",
"F11",
"F12",
"PrintScreen",
"ScrollLock",
"Pause",
"Insert",
"Home",
"PageUp",
"Delete",
"End",
"PageDown",
"Right",
"Left",
"Down",
"Up",
"Numlock",
"Keypad /",
"Keypad *",
"Keypad -",
"Keypad +",
"Keypad Enter",
"Keypad 1",
"Keypad 2",
"Keypad 3",
"Keypad 4",
"Keypad 5",
"Keypad 6",
"Keypad 7",
"Keypad 8",
"Keypad 9",
"Keypad 0",
"Keypad .",
NULL,
"Application",
"Power",
"Keypad =",
"F13",
"F14",
"F15",
"F16",
"F17",
"F18",
"F19",
"F20",
"F21",
"F22",
"F23",
"F24",
"Execute",
"Help",
"Menu",
"Select",
"Stop",
"Again",
"Undo",
"Cut",
"Copy",
"Paste",
"Find",
"Mute",
"VolumeUp",
"VolumeDown",
NULL, NULL, NULL,
"Keypad ,",
"Keypad = (AS400)",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL,
"AltErase",
"SysReq",
"Cancel",
"Clear",
"Prior",
"Return",
"Separator",
"Out",
"Oper",
"Clear / Again",
"CrSel",
"ExSel",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
"Keypad 00",
"Keypad 000",
"ThousandsSeparator",
"DecimalSeparator",
"CurrencyUnit",
"CurrencySubUnit",
"Keypad (",
"Keypad )",
"Keypad {",
"Keypad }",
"Keypad Tab",
"Keypad Backspace",
"Keypad A",
"Keypad B",
"Keypad C",
"Keypad D",
"Keypad E",
"Keypad F",
"Keypad XOR",
"Keypad ^",
"Keypad %",
"Keypad <",
"Keypad >",
"Keypad &",
"Keypad &&",
"Keypad |",
"Keypad ||",
"Keypad :",
"Keypad #",
"Keypad Space",
"Keypad @",
"Keypad !",
"Keypad MemStore",
"Keypad MemRecall",
"Keypad MemClear",
"Keypad MemAdd",
"Keypad MemSubtract",
"Keypad MemMultiply",
"Keypad MemDivide",
"Keypad +/-",
"Keypad Clear",
"Keypad ClearEntry",
"Keypad Binary",
"Keypad Octal",
"Keypad Decimal",
"Keypad Hexadecimal",
NULL, NULL,
"Left Ctrl",
"Left Shift",
"Left Alt",
"Left GUI",
"Right Ctrl",
"Right Shift",
"Right Alt",
"Right GUI",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL,
"ModeSwitch",
"AudioNext",
"AudioPrev",
"AudioStop",
"AudioPlay",
"AudioMute",
"MediaSelect",
487
"WWW",
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
"Mail",
"Calculator",
"Computer",
"AC Search",
"AC Home",
"AC Back",
"AC Forward",
"AC Stop",
"AC Refresh",
"AC Bookmarks",
"BrightnessDown",
"BrightnessUp",
"DisplaySwitch",
"KBDIllumToggle",
"KBDIllumDown",
"KBDIllumUp",
"Eject",
"Sleep",
};
508
/* Taken from SDL_iconv() */
509
510
static char *
SDL_UCS4ToUTF8(Uint32 ch, char *dst)
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
{
Uint8 *p = (Uint8 *) dst;
if (ch <= 0x7F) {
*p = (Uint8) ch;
++dst;
} else if (ch <= 0x7FF) {
p[0] = 0xC0 | (Uint8) ((ch >> 6) & 0x1F);
p[1] = 0x80 | (Uint8) (ch & 0x3F);
dst += 2;
} else if (ch <= 0xFFFF) {
p[0] = 0xE0 | (Uint8) ((ch >> 12) & 0x0F);
p[1] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
p[2] = 0x80 | (Uint8) (ch & 0x3F);
dst += 3;
} else if (ch <= 0x1FFFFF) {
p[0] = 0xF0 | (Uint8) ((ch >> 18) & 0x07);
p[1] = 0x80 | (Uint8) ((ch >> 12) & 0x3F);
p[2] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
p[3] = 0x80 | (Uint8) (ch & 0x3F);
dst += 4;
} else if (ch <= 0x3FFFFFF) {
p[0] = 0xF8 | (Uint8) ((ch >> 24) & 0x03);
p[1] = 0x80 | (Uint8) ((ch >> 18) & 0x3F);
p[2] = 0x80 | (Uint8) ((ch >> 12) & 0x3F);
p[3] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
p[4] = 0x80 | (Uint8) (ch & 0x3F);
dst += 5;
} else {
p[0] = 0xFC | (Uint8) ((ch >> 30) & 0x01);
p[1] = 0x80 | (Uint8) ((ch >> 24) & 0x3F);
p[2] = 0x80 | (Uint8) ((ch >> 18) & 0x3F);
p[3] = 0x80 | (Uint8) ((ch >> 12) & 0x3F);
p[4] = 0x80 | (Uint8) ((ch >> 6) & 0x3F);
p[5] = 0x80 | (Uint8) (ch & 0x3F);
dst += 6;
}
return dst;
}
550
551
552
553
554
555
/* Public functions */
int
SDL_KeyboardInit(void)
{
return (0);
}
556
557
void
558
SDL_ResetKeyboard(void)
559
{
560
SDL_Keyboard *keyboard = &SDL_keyboard;
561
SDL_scancode scancode;
562
563
564
for (scancode = 0; scancode < SDL_NUM_SCANCODES; ++scancode) {
if (keyboard->keystate[scancode] == SDL_PRESSED) {
565
SDL_SendKeyboardKey(SDL_RELEASED, scancode);
566
567
}
}
568
569
}
570
void
571
SDL_GetDefaultKeymap(SDLKey * keymap)
572
{
573
SDL_memcpy(keymap, SDL_default_keymap, sizeof(SDL_default_keymap));
574
575
}
576
void
577
SDL_SetKeymap(int start, SDLKey * keys, int length)
578
{
579
SDL_Keyboard *keyboard = &SDL_keyboard;
580
581
582
if (start < 0 || start + length > SDL_NUM_SCANCODES) {
return;
583
}
584
585
SDL_memcpy(&keyboard->keymap[start], keys, sizeof(*keys) * length);
586
587
}
588
void
589
SDL_SetScancodeName(SDL_scancode scancode, const char *name)
590
{
591
SDL_scancode_names[scancode] = name;
592
593
}
594
595
SDL_Window *
SDL_GetKeyboardFocus(void)
596
{
597
SDL_Keyboard *keyboard = &SDL_keyboard;
598
599
600
601
602
603
604
605
return keyboard->focus;
}
void
SDL_SetKeyboardFocus(SDL_Window * window)
{
SDL_Keyboard *keyboard = &SDL_keyboard;
606
607
/* See if the current window has lost focus */
608
if (keyboard->focus && keyboard->focus != window) {
609
610
SDL_SendWindowEvent(keyboard->focus, SDL_WINDOWEVENT_FOCUS_LOST,
0, 0);
611
612
}
613
keyboard->focus = window;
614
615
if (keyboard->focus) {
616
617
SDL_SendWindowEvent(keyboard->focus, SDL_WINDOWEVENT_FOCUS_GAINED,
0, 0);
618
619
if (SDL_EventState(SDL_TEXTINPUT, SDL_QUERY)) {
620
SDL_StartTextInput();
621
}
622
623
}
}
624
625
int
626
SDL_SendKeyboardKey(Uint8 state, SDL_scancode scancode)
627
{
628
SDL_Keyboard *keyboard = &SDL_keyboard;
629
int posted;
630
Uint16 modstate;
631
Uint32 type;
632
633
if (!scancode) {
634
635
return 0;
}
636
#if 0
637
printf("The '%s' key has been %s\n", SDL_GetScancodeName(scancode),
638
state == SDL_PRESSED ? "pressed" : "released");
639
#endif
640
641
if (state == SDL_PRESSED) {
modstate = keyboard->modstate;
642
643
switch (scancode) {
case SDL_SCANCODE_NUMLOCKCLEAR:
644
645
keyboard->modstate ^= KMOD_NUM;
break;
646
case SDL_SCANCODE_CAPSLOCK:
647
648
keyboard->modstate ^= KMOD_CAPS;
break;
649
case SDL_SCANCODE_LCTRL:
650
651
keyboard->modstate |= KMOD_LCTRL;
break;
652
case SDL_SCANCODE_RCTRL:
653
654
keyboard->modstate |= KMOD_RCTRL;
break;
655
case SDL_SCANCODE_LSHIFT:
656
657
keyboard->modstate |= KMOD_LSHIFT;
break;
658
case SDL_SCANCODE_RSHIFT:
659
660
keyboard->modstate |= KMOD_RSHIFT;
break;
661
case SDL_SCANCODE_LALT:
662
663
keyboard->modstate |= KMOD_LALT;
break;
664
case SDL_SCANCODE_RALT:
665
666
keyboard->modstate |= KMOD_RALT;
break;
667
668
case SDL_SCANCODE_LGUI:
keyboard->modstate |= KMOD_LGUI;
669
break;
670
671
case SDL_SCANCODE_RGUI:
keyboard->modstate |= KMOD_RGUI;
672
break;
673
case SDL_SCANCODE_MODE:
674
675
676
677
678
679
keyboard->modstate |= KMOD_MODE;
break;
default:
break;
}
} else {
680
681
682
switch (scancode) {
case SDL_SCANCODE_NUMLOCKCLEAR:
case SDL_SCANCODE_CAPSLOCK:
683
break;
684
case SDL_SCANCODE_LCTRL:
685
686
keyboard->modstate &= ~KMOD_LCTRL;
break;
687
case SDL_SCANCODE_RCTRL:
688
689
keyboard->modstate &= ~KMOD_RCTRL;
break;
690
case SDL_SCANCODE_LSHIFT:
691
692
keyboard->modstate &= ~KMOD_LSHIFT;
break;
693
case SDL_SCANCODE_RSHIFT:
694
695
keyboard->modstate &= ~KMOD_RSHIFT;
break;
696
case SDL_SCANCODE_LALT:
697
698
keyboard->modstate &= ~KMOD_LALT;
break;
699
case SDL_SCANCODE_RALT:
700
701
keyboard->modstate &= ~KMOD_RALT;
break;
702
703
case SDL_SCANCODE_LGUI:
keyboard->modstate &= ~KMOD_LGUI;
704
break;
705
706
case SDL_SCANCODE_RGUI:
keyboard->modstate &= ~KMOD_RGUI;
707
break;
708
case SDL_SCANCODE_MODE:
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
keyboard->modstate &= ~KMOD_MODE;
break;
default:
break;
}
modstate = keyboard->modstate;
}
/* Figure out what type of event this is */
switch (state) {
case SDL_PRESSED:
type = SDL_KEYDOWN;
break;
case SDL_RELEASED:
type = SDL_KEYUP;
break;
default:
/* Invalid state -- bail */
return 0;
}
730
731
/* Drop events that don't change state */
if (keyboard->keystate[scancode] == state) {
732
#if 0
733
printf("Keyboard event didn't change state - dropped!\n");
734
#endif
735
return 0;
736
737
}
738
739
740
/* Update internal keyboard state */
keyboard->keystate[scancode] = state;
741
742
/* Post the event, if desired */
posted = 0;
743
if (SDL_GetEventState(type) == SDL_ENABLE) {
744
745
746
747
SDL_Event event;
event.key.type = type;
event.key.state = state;
event.key.keysym.scancode = scancode;
748
event.key.keysym.sym = keyboard->keymap[scancode];
749
750
event.key.keysym.mod = modstate;
event.key.keysym.unicode = 0;
751
event.key.windowID = keyboard->focus ? keyboard->focus->id : 0;
752
753
754
755
756
757
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
}
int
758
SDL_SendKeyboardText(const char *text)
759
{
760
SDL_Keyboard *keyboard = &SDL_keyboard;
761
762
763
764
int posted;
/* Post the event, if desired */
posted = 0;
765
if (SDL_GetEventState(SDL_TEXTINPUT) == SDL_ENABLE) {
766
767
SDL_Event event;
event.text.type = SDL_TEXTINPUT;
768
event.text.windowID = keyboard->focus ? keyboard->focus->id : 0;
769
SDL_strlcpy(event.text.text, text, SDL_arraysize(event.text.text));
770
event.text.windowID = keyboard->focus ? keyboard->focus->id : 0;
771
772
773
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
774
775
}
776
int
777
SDL_SendEditingText(const char *text, int start, int length)
778
{
779
SDL_Keyboard *keyboard = &SDL_keyboard;
780
781
782
783
int posted;
/* Post the event, if desired */
posted = 0;
784
if (SDL_GetEventState(SDL_TEXTEDITING) == SDL_ENABLE) {
785
786
SDL_Event event;
event.edit.type = SDL_TEXTEDITING;
787
event.edit.windowID = keyboard->focus ? keyboard->focus->id : 0;
788
789
event.edit.start = start;
event.edit.length = length;
790
SDL_strlcpy(event.edit.text, text, SDL_arraysize(event.edit.text));
791
792
793
794
795
posted = (SDL_PushEvent(&event) > 0);
}
return (posted);
}
796
797
798
799
800
801
802
803
void
SDL_KeyboardQuit(void)
{
}
Uint8 *
SDL_GetKeyboardState(int *numkeys)
{
804
SDL_Keyboard *keyboard = &SDL_keyboard;
805
806
807
808
809
810
811
812
813
814
if (numkeys != (int *) 0) {
*numkeys = SDL_NUM_SCANCODES;
}
return keyboard->keystate;
}
SDLMod
SDL_GetModState(void)
{
815
SDL_Keyboard *keyboard = &SDL_keyboard;
816
817
818
819
820
821
822
return keyboard->modstate;
}
void
SDL_SetModState(SDLMod modstate)
{
823
SDL_Keyboard *keyboard = &SDL_keyboard;
824
825
826
827
828
829
830
keyboard->modstate = modstate;
}
SDLKey
SDL_GetKeyFromScancode(SDL_scancode scancode)
{
831
SDL_Keyboard *keyboard = &SDL_keyboard;
832
833
834
835
836
837
838
return keyboard->keymap[scancode];
}
SDL_scancode
SDL_GetScancodeFromKey(SDLKey key)
{
839
SDL_Keyboard *keyboard = &SDL_keyboard;
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
SDL_scancode scancode;
for (scancode = SDL_SCANCODE_UNKNOWN; scancode < SDL_NUM_SCANCODES;
++scancode) {
if (keyboard->keymap[scancode] == key) {
return scancode;
}
}
return SDL_SCANCODE_UNKNOWN;
}
const char *
SDL_GetScancodeName(SDL_scancode scancode)
{
const char *name = SDL_scancode_names[scancode];
if (name)
return name;
else
return "";
}
const char *
SDL_GetKeyName(SDLKey key)
{
static char name[8];
char *end;
if (key & SDLK_SCANCODE_MASK) {
return
SDL_GetScancodeName((SDL_scancode) (key & ~SDLK_SCANCODE_MASK));
}
873
874
switch (key) {
case SDLK_RETURN:
875
return SDL_GetScancodeName(SDL_SCANCODE_RETURN);
876
case SDLK_ESCAPE:
877
return SDL_GetScancodeName(SDL_SCANCODE_ESCAPE);
878
case SDLK_BACKSPACE:
879
return SDL_GetScancodeName(SDL_SCANCODE_BACKSPACE);
880
case SDLK_TAB:
881
return SDL_GetScancodeName(SDL_SCANCODE_TAB);
882
case SDLK_SPACE:
883
return SDL_GetScancodeName(SDL_SCANCODE_SPACE);
884
case SDLK_DELETE:
885
return SDL_GetScancodeName(SDL_SCANCODE_DELETE);
886
887
888
889
890
891
892
893
default:
/* Unaccented letter keys on latin keyboards are normally
labeled in upper case (and probably on others like Greek or
Cyrillic too, so if you happen to know for sure, please
adapt this). */
if (key >= 'a' && key <= 'z') {
key -= 32;
}
894
895
896
897
898
end = SDL_UCS4ToUTF8((Uint32) key, name);
*end = '\0';
return name;
}
899
900
}
901
/* vi: set ts=4 sw=4 expandtab: */