summaryrefslogtreecommitdiff
path: root/inputmethods/kjumpx/keyboard.cpp
blob: 3af6a787f708682e5b53873df71093ebd8e899a5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
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
255
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
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
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
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
/**************************************************************************************94x78**
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
*********************************************************************************************/
#include "keyboard.h"

#include <qpe/resource.h>

//#include <iostream.h>


static const int autorepeatDelaytime = 500; // ms
static const int autorepeatRate      = 20;  // chars per second

static const int mod1x1    =   0;
static const int mod1x2    =  23;
static const int mod1w     =  mod1x2 - mod1x1;

static const int letterx1  =  27;
static const int letterx2  = 129;
static const int letterw   =  17;
static const int letterh   =  14;

static const int num1x1    = 130;
static const int num1x2    = 137;
static const int num1w     = num1x2 - num1x1;

static const int specialx1 = 138;
static const int specialx2 = 170;
static const int specialw  =  16;

static const int num2x1    = 171;
static const int num2x2    = 178;
static const int num2w     = num2x2 - num2x1;

static const int mod2x1    = 179;
static const int mod2x2    = 203;
static const int mod2w     = mod2x2 - mod2x1;

static const int cursorx1  = 207;
static const int cursorw   =  16;

static const int myParenID = -10;


typedef struct mapElement
{
    int    qcode;
    ushort unicode;
};

static const mapElement mod1Map[] = {
    { Qt::Key_Escape, 27 },
    { Qt::Key_Tab,     9 },
    { Qt::Key_Return, 13 },
    { Qt::Key_Alt,     0 },
    { Qt::Key_Control, 0 },
};

static const uchar *const letterMap[] = {
    (const uchar *const)"zvchwk",
    (const uchar *const)"fitaly",
    (const uchar *const)"  ne  ",
    (const uchar *const)"gdorsb",
    (const uchar *const)"qjumpx",
};

static const ushort kletterMap[][6] = {
	{ 0x110c, 0x1112, 0x1109, 0x116d, 0x1167, 0x1163 },
	{ 0x110f, 0x1105, 0x1100, 0x1161, 0x1175, 0x1162 },
	{ ' ',    ' ',    0x110b, 0x1165, ' ',    ' '    },
	{ 0x1110, 0x1103, 0x1102, 0x1169, 0x1173, 0x1166 },
	{ 0x110e, 0x1107, 0x1106, 0x1111, 0x116e, 0x1172 },
};

static const uchar *const letterMapShift[] = {
    (const uchar *const)"ZVCHWK",
    (const uchar *const)"FITALY",
    (const uchar *const)"  NE  ",
    (const uchar *const)"GDORSB",
    (const uchar *const)"QJUMPX",
};

static const ushort kletterMapShift[][6] = {
	{ 0x110d, 0x1112, 0x110a, 0x116d, 0x1167, 0x1163 },
	{ 0x110f, 0x1105, 0x1101, 0x1161, 0x1175, 0x1164 },
	{ ' ',    ' ',    0x110b, 0x1165, ' ',    ' '    },
	{ 0x1110, 0x1104, 0x1102, 0x1169, 0x1173, 0x1168 },
	{ 0x110e, 0x1108, 0x1106, 0x1111, 0x116e, 0x1172 },
};

static const uchar *const num1Map = (const uchar *const)"12345";

static const uchar *const specialMap[] = {
    (const uchar *const)"-+",
    (const uchar *const)"*!",
    (const uchar *const)",'",
    (const uchar *const)".%",
    (const uchar *const)"/$",
};

static const uchar *const specialMapShift[] = {
    (const uchar *const)"_=",
    (const uchar *const)"#?",
    (const uchar *const)";\"",
    (const uchar *const)":|",
    (const uchar *const)"\\&",
};

static const uchar *const specialMapParen[] = {
    (const uchar *const)"()",
    (const uchar *const)"[]",
    (const uchar *const)"{}",
    (const uchar *const)"<>",
    (const uchar *const)"@~",
};

static const uchar *const num2Map = (const uchar *const)"67890";

static const mapElement mod2Map[] = {
    { Qt::Key_Backspace,  8 },
    { Qt::Key_Delete,     0 },
    { Qt::Key_Return,    13 },
    { Qt::Key_Shift,      0 },
    { myParenID,          0 },
};

static const int cursorMap[][2] = {
    { Qt::Key_Home, Qt::Key_PageUp   },
    { Qt::Key_End,  Qt::Key_PageDown },
    { Qt::Key_Up,   Qt::Key_Up       },
    { Qt::Key_Left, Qt::Key_Right    },
    { Qt::Key_Down, Qt::Key_Down     },
};


Keyboard::Keyboard(QWidget* parent, const char* name, WFlags f) :
    QFrame(parent, name, f),
    shift(0), paren(0), ctrl(0), alt(0), lang(1), lastKey(0),
    pressedKeyUnicode(0), pressedKeyQcode(0), pressedMod(0),
    isnoncont(false),
    slideKeyUnicodeH(0), slideKeyQcodeH(0), slideKeyUnicodeV(0), slideKeyQcodeV(0),
    enableMouseTracking(false), slidePix(NULL), slidePixH(NULL), slidePixV(NULL),
    releasedPix(NULL), pressedPix(NULL)
{
    //setPalette(QPalette(QColor(240,240,230))); // Beige!

    releasedPlain = releasedShift = releasedParen = Resource::loadPixmap("kjumpx/released");
    pressedPlain  = pressedShift  = pressedParen  = Resource::loadPixmap("kjumpx/pressed");
    pressedDigit = Resource::loadPixmap("kjumpx/pressed");

    QPixmap tmp;

    tmp = Resource::loadPixmap("kjumpx/releasedShift");
    bitBlt(&releasedShift, letterx1, 0, &tmp);

    tmp = Resource::loadPixmap("kjumpx/releasedParen");
    bitBlt(&releasedParen, specialx1, 0, &tmp);

    tmp = Resource::loadPixmap("kjumpx/pressedShift");
    bitBlt(&pressedShift, letterx1, 0, &tmp);

    tmp = Resource::loadPixmap("kjumpx/pressedParen");
    bitBlt(&pressedParen, specialx1, 0, &tmp);

    tmp = Resource::loadPixmap("kjumpx/pressedDigit");
    bitBlt(&pressedDigit, specialx1, 0, &tmp);

    offscreen = QPixmap( releasedPlain );

    releasedPix = &releasedPlain;
    pressedPix  = &pressedPlain;
    slidePix    = &pressedPlain;

    delayTimer = new QTimer(this);
    rateTimer  = new QTimer(this);
    connect( delayTimer, SIGNAL( timeout() ), this, SLOT( delayTimerDone() ) );
    connect( rateTimer,  SIGNAL( timeout() ), this, SLOT( rateTimerDone() ) );
}

void Keyboard::resizeEvent(QResizeEvent*)
{
    //cout << "resizeEvent()" << endl;
}

void Keyboard::paintEvent(QPaintEvent*)
{
    bitBlt(this, 0, 0, &offscreen);
}

void Keyboard::mousePressEvent(QMouseEvent *e)
{
    pressedx = -1;
    pressedKeyUnicode = pressedKeyQcode = pressedMod = 0;

    int x = e->x();
    int y = e->y();

    int row = (y - 1) / letterh;

    if ( x <= mod1x2 ) // mod1
    {
        pressedx = mod1x1;
        pressedy = row * letterh;
        pressedw = mod1w + 1;
        pressedh = letterh + 1;
        if ( row == 2 ) // return
        {
            pressed2x = mod2x1;
            pressed2y = 2 * letterh;
            pressed2w = mod2w + 1;
            pressed2h = letterh + 1;
            isnoncont = true;
        }
        else if ( row == 3 ) // alt
            alt = 1;
        else if ( row == 4 ) // ctrl
            ctrl = 1;
        pressedKeyUnicode = mod1Map[row].unicode;
        pressedKeyQcode   = mod1Map[row].qcode;
    }
    else if ( x >= letterx1 && x <= letterx2 ) // letter
    {
        int column = (x - letterx1 - 1) / letterw;
        QChar temp;
		if (lang == 0) // english
        	if ( shift )
            	temp = QChar( letterMapShift[row][column] );
        	else 
            	temp = QChar( letterMap[row][column] );
		else if (lang == 1) // korean
        	if ( shift )
            	temp = parseKoreanInput( kletterMapShift[row][column] );
        	else 
            	temp = parseKoreanInput( kletterMap[row][column] );

        if ( temp == ' ' ) // space
        {
            if ( column < 3 )
            {
                pressedx  = letterx1;
                pressed2x = letterx1 + letterw * 4;
            }
            else
            {
                pressedx  = letterx1 + letterw * 4;
                pressed2x = letterx1;
            }
            pressedy = pressed2y = row * letterh;
            pressedw = pressed2w = letterw * 2 + 1;
            pressedh = pressed2h = letterh + 1;
            isnoncont = true;
        }
        else
        {
            pressedx = letterx1 + column * letterw;
            pressedy = row * letterh;
            pressedw = letterw + 1;
            pressedh = letterh + 1;
        }
        pressedKeyUnicode = temp.unicode();
        pressedKeyQcode = slideKeyQcodeH = slideKeyQcodeV = temp.upper().unicode();
        if ( temp == ' ' )
        {
            slideKeyUnicodeH = slideKeyUnicodeV = 8;
            slideKeyQcodeH   = slideKeyQcodeV   = Qt::Key_Backspace;
        }
        else if ( temp == temp.lower() )
        {
            slideKeyUnicodeH = slideKeyUnicodeV = temp.upper().unicode();
            slidePixH = slidePixV = &pressedShift;
        }
        else
        {
            slideKeyUnicodeH = slideKeyUnicodeV = temp.lower().unicode();
            slidePixH = slidePixV = &pressedPlain;
        }
        enableMouseTracking = true;
    }
    else if ( x >= num1x1 && x <= num1x2 ) // num1
    {
        pressedx = num1x1;
        pressedy = row * letterh;
        pressedw = num1w + 1;
        pressedh = letterh + 1;
        QChar temp = QChar( num1Map[row] );
        pressedKeyUnicode = pressedKeyQcode = temp.unicode();
    }
    else if ( x >= specialx1 && x <= specialx2 ) // special
    {
        int column = (x - specialx1 - 1) / specialw;
        pressedx = specialx1 + column * specialw;
        pressedy = row * letterh;
        pressedw = specialw + 1;
        pressedh = letterh + 1;
        QChar temp;
        if ( shift )
            temp = QChar( specialMapShift[row][column] );
        else if ( paren )
            temp = QChar( specialMapParen[row][column] );
        else
            temp = QChar( specialMap[row][column] );
        pressedKeyUnicode = pressedKeyQcode = temp.unicode();
        slideKeyUnicodeH = slideKeyQcodeH = slideKeyUnicodeV = slideKeyQcodeV =
            QChar('0').unicode() + ( 5 * column + row + 1 ) % 10;
        slidePixH = slidePixV = &pressedDigit;
        if ( shift )
        {
            slideKeyUnicodeV = slideKeyQcodeV =
                QChar( specialMap[row][column] ).unicode();
            slidePixV = &pressedPlain;
        }
        else if ( !(shift || paren) )
        {
            slideKeyUnicodeV = slideKeyQcodeV =
                QChar( specialMapShift[row][column] ).unicode();
            slidePixV = &pressedShift;
        }
        enableMouseTracking = true;
    }
    else if ( x >= num2x1 && x <= num2x2 ) // num2
    {
        pressedx = num2x1;
        pressedy = row * letterh;
        pressedw = num2w + 1;
        pressedh = letterh + 1;
        QChar temp = QChar( num2Map[row] );
        pressedKeyUnicode = pressedKeyQcode = temp.unicode();
    }
    else if ( x >= mod2x1 && x <= mod2x2 ) // mod2
    {
        pressedx = mod2x1;
        pressedy = row * letterh;
        pressedw = mod2w + 1;
        pressedh = letterh + 1;
        if ( row == 2 ) // return
        {
            pressed2x = mod1x1;
            pressed2y = 2 * letterh;
            pressed2w = mod2w + 1;
            pressed2h = letterh + 1;
            isnoncont = true;
        }
        pressedKeyUnicode = mod2Map[row].unicode;
        pressedKeyQcode   = mod2Map[row].qcode;

        if ( row == 3 ) // shift
        {
            paren = 0;
            switch ( shift )
            {
            case 0:
            {
                shift = 1;
                releasedPix = &releasedShift;
                pressedPix = &pressedShift;
                bitBlt( &offscreen, 0, 0, releasedPix );
                break;
            }
            case 1:
            {
                shift = 2;
                break;
            }
            case 2:
            {
                shift = 0;
                releasedPix = &releasedPlain;
                pressedPix = &pressedPlain;
                bitBlt( &offscreen, 0, 0, releasedPix );
                break;
            }
            }
        }
        else if ( row == 4 ) // parenthesis
        {
            shift = 0;
            switch ( paren )
            {
            case 0:
            {
                paren = 1;
                releasedPix = &releasedParen;
                pressedPix = &pressedParen;
                bitBlt( &offscreen, 0, 0, releasedPix );
                break;
            }
            case 1:
            {
                paren = 2;
                break;
            }
            case 2:
            {
                paren = 0;
                releasedPix = &releasedPlain;
                pressedPix = &pressedPlain;
                bitBlt( &offscreen, 0, 0, releasedPix );
                break;
            }
            }
        }
    }
    else if ( x >= cursorx1 ) // cursor
    {
        int column = (x - cursorx1 - 1) / cursorw;
        if ( row == 2 || row == 4 )
            pressedx = cursorx1 + cursorw / 2;
        else
            pressedx = cursorx1 + column * cursorw;
        pressedy = row * letterh;
        pressedw = cursorw + 1;
        pressedh = letterh + 1;
        pressedKeyQcode = cursorMap[row][column];
    }

    pressedMod = ( shift ? Qt::ShiftButton : 0 ) |
                 ( ctrl ? Qt::ControlButton : 0 ) |
                 ( alt ? Qt::AltButton : 0 );

	lastKey = pressedKeyUnicode;

    emit key( pressedKeyUnicode, pressedKeyQcode, pressedMod, true, false );
    delayTimer->start( autorepeatDelaytime, true );

    if ( pressedx == -1 )
        return;

    bitBlt( &offscreen, pressedx, pressedy,
            pressedPix, pressedx, pressedy, pressedw, pressedh );
    if ( isnoncont )
        bitBlt( &offscreen, pressed2x, pressed2y,
                pressedPix, pressed2x, pressed2y, pressed2w, pressed2h );

    repaint( false );
}

void Keyboard::mouseReleaseEvent(QMouseEvent*)
{
    //cout << pressedx << " " << pressedy << " " << pressedw << " " << pressedh << endl;

    delayTimer->stop();
    rateTimer->stop();
    enableMouseTracking = false;

    if ( pressedx == -1 )
        return;

    if ( shift == 2 && pressedKeyQcode == Qt::Key_Shift )
        return;
    if ( paren == 2 && pressedKeyQcode == myParenID )
        return;

    if ( shift == 1 && pressedKeyQcode != Qt::Key_Shift )
    {
        shift = 0;
        releasedPix = &releasedPlain;
        pressedPix = &pressedPlain;
        bitBlt( &offscreen, 0, 0, releasedPix );
    }

    if ( paren == 1 && pressedKeyQcode != myParenID )
    {
        paren = 0;
        releasedPix = &releasedPlain;
        pressedPix = &pressedPlain;
        bitBlt( &offscreen, 0, 0, releasedPix );
    }

    if ( alt && pressedKeyQcode != Qt::Key_Alt )
        alt = 0;
    if ( ctrl && pressedKeyQcode != Qt::Key_Control )
        ctrl = 0;

    bitBlt( &offscreen, pressedx, pressedy,
            releasedPix, pressedx, pressedy, pressedw, pressedh );

    if ( isnoncont )
    {
        isnoncont = false;
        bitBlt( &offscreen, pressed2x, pressed2y,
                releasedPix, pressed2x, pressed2y, pressed2w, pressed2h );
    }

    repaint( false );
}

void Keyboard::mouseMoveEvent(QMouseEvent *e)
{
    if ( !enableMouseTracking )
        return;

    if ( e->x() < pressedx || e->x() >= pressedx + pressedw )
    {
        pressedKeyUnicode = slideKeyUnicodeH;
        pressedKeyQcode = slideKeyQcodeH;
        slidePix = slidePixH;
    }
    else if ( e->y() < pressedy || e->y() >= pressedy + pressedh )
    {
        pressedKeyUnicode = slideKeyUnicodeV;
        pressedKeyQcode = slideKeyQcodeV;
        slidePix = slidePixV;
    }
    else
        return;

    enableMouseTracking = false;

    delayTimer->stop();
    rateTimer->stop();

    bitBlt( &offscreen, pressedx, pressedy,
            slidePix, pressedx, pressedy, pressedw, pressedh );

    emit key( 8, Qt::Key_Backspace, pressedMod, true, false );
    emit key( pressedKeyUnicode, pressedKeyQcode, pressedMod, true, false );
    delayTimer->start( autorepeatDelaytime, true );

    repaint( false );
}

void Keyboard::delayTimerDone()
{
    emit key( pressedKeyUnicode, pressedKeyQcode, pressedMod, true, true );
    rateTimer->start( 1000/autorepeatRate, false );
}

void Keyboard::rateTimerDone()
{
    emit key( pressedKeyUnicode, pressedKeyQcode, pressedMod, true, true );
}

QSize Keyboard::sizeHint() const
{
    return offscreen.size();
}

void Keyboard::resetState()
{
    //cout << "resetState()" << endl;
}

/*
 *
 * TODO
 * one major problem with this implementation is that you can't move the
 * cursor after inputing korean chars, otherwise it will eat up and replace
 * the char before the cursor you move to. fix that
 *
 * make a kor/eng swaping key
 *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
 *
 * how korean input works
 *
 * all following chars means unicode char value and are in hex
 *
 * ���� = schar (start char)
 * ���� = mchar (middle char)
 * ���� = echar (end char)
 *
 * there are 19 schars. unicode position is at 1100 - 1112
 * there are 21 mchars. unicode position is at 1161 - 1175
 * there are 27 echars. unicode position is at 11a8 - 11c2
 *
 * the map with everything combined is at ac00 - d7a3
 *
 * to find a combination of schar + mchar in the map, lookup 
 * ((schar - 0x1100) * 587) + ((mchar - 0x1161) * 27) + (echar - 0x11a8) + 0xac00)
 *
 */

QChar Keyboard::parseKoreanInput (ushort c) {

	static ushort schar, mchar, echar;

	if ((lastKey < 0x1100 || 0x11c2 < lastKey) && (lastKey < 0xac00 || 0xd7a3 < lastKey)
					&& !(lastKey == 0 && (shift || paren || ctrl || alt))) {

		//printf ("reset...\n");
		schar = 0, mchar = 0, echar = 0;
	}

	//printf ("in %x %x %x %x %x\n", schar, mchar, echar, c, lastKey);
	if ( 0x1100 <= c && c <= 0x1112 ) { // schar or echar was input

		if (schar == 0 || (schar != 0 && mchar == 0)) {
			schar = c; mchar = 0; echar = 0;
			return QChar(c);
		}
		else if (mchar != 0) {

			if (echar == 0) {

				if (!(echar = constoe(c))) {

					schar = c; mchar = 0; echar = 0; 
					return QChar(c);
				}

			}
			else { // must figure out what the echar is

				if (echar == 0x11a8) { // ��

					if (c == 0x1100) 		echar = 0x11a9; // �� + ��
					else if (c == 0x1109) 	echar = 0x11aa; // �� + ��
					else { 
						schar = c; mchar = 0; echar = 0; 
						return QChar(c);
					}

				} else if (echar == 0x11ab) { // ��

					if (c == 0x110c)  		echar = 0x11ac; // �� + ��
					else if (c == 0x1112)  	echar = 0x11ad; // �� + ��
					else {
						schar = c; mchar = 0; echar = 0; 
						return QChar(c);
					}

				} else if (echar == 0x11af) { // ��

					if (c == 0x1100) 		echar = 0x11b0; // �� + ��
					else if (c == 0x1106) 	echar = 0x11b1; // �� + ��
					else if (c == 0x1107) 	echar = 0x11b2; // �� + ��
					else if (c == 0x1109) 	echar = 0x11b3; // �� + ��
					else if (c == 0x1110) 	echar = 0x11b4; // �� + ��
					else if (c == 0x1111) 	echar = 0x11b5; // �� + ��
					else if (c == 0x1112) 	echar = 0x11b6; // �� + ��
					else {
						schar = c; mchar = 0; echar = 0; 
						return QChar(c);
					}

				} else if (echar == 0x11b8) { // ��

					if (c == 0x1109) 		echar = 0x11b9; // �� + ��
					else {
						schar = c; mchar = 0; echar = 0; 
						return QChar(c);
					}

				} else if (echar == 0x11ba) { // �� 

					if (c == 0x1109) 		echar = 0x11bb; // �� + �� 
					else {
						schar = c; mchar = 0; echar = 0; 
						return QChar(c);
					}

				} else { // if any other char, cannot combine chars

					schar = c; mchar = 0; echar = 0;
					return QChar(c);
				}

				lastKey  = echar;
			}
		}

	}
	else if (0x1161 <= c && c <= 0x1175) { // mchar was input

		if (schar != 0 && mchar == 0) { mchar = c; }

		else if (schar != 0 && mchar != 0 && echar == 0) {

			switch (mchar) {
				case 0x1169:
					if (c == 0x1161) mchar = 0x116a;
					else if (c == 0x1162) mchar = 0x116b;
					else if (c == 0x1175) mchar = 0x116c;
					else {
						schar = 0; mchar = 0; echar = 0;
						return QChar(c);
					}
					break;
				case 0x116e:
					if (c == 0x1165) mchar = 0x116f;
					else if (c == 0x1166) mchar = 0x1170;
					else if (c == 0x1175) mchar = 0x1171;
					else {
						schar = 0; mchar = 0; echar = 0;
						return QChar(c);
					}
					break;
				case 0x1173:
					if (c == 0x1175) mchar = 0x1174;
					else {
						schar = 0; mchar = 0; echar = 0;
						return QChar(c);
					}
					break;
				default: 
					schar = 0; mchar = 0; echar = 0;
					return QChar(c);
			}
		}
		else if (schar != 0 && mchar != 0 && echar != 0) {

			emit key( 8, Qt::Key_Backspace, 0, true, false );

			ushort prev = 0;
			switch (echar) {
				/*
				case 0x11a9:
					prev = combineKoreanChars(schar, mchar, 0x11a8);
					schar = 0x1100; 
					break;
				*/
				case 0x11aa:
					prev = combineKoreanChars(schar, mchar, 0x11a8);
					schar = 0x1109;
					break;
				case 0x11ac:
					prev = combineKoreanChars(schar, mchar, 0x11ab);
					schar = 0x110c; 
					break;
				case 0x11ad:
					prev = combineKoreanChars(schar, mchar, 0x11ab);
					schar = 0x1112;
					break;
				case 0x11b0:
					prev = combineKoreanChars(schar, mchar, 0x11af);
					schar = 0x1100; 
					break;
				case 0x11b1:
					prev = combineKoreanChars(schar, mchar, 0x11af);
					schar = 0x1106;
					break;
				case 0x11b2:
					prev = combineKoreanChars(schar, mchar, 0x11af);
					schar = 0x1107; 
					break;
				case 0x11b3:
					prev = combineKoreanChars(schar, mchar, 0x11af);
					schar = 0x1109;
					break;
				case 0x11b4:
					prev = combineKoreanChars(schar, mchar, 0x11af);
					schar = 0x1110;
					break;
				case 0x11b9:
					prev = combineKoreanChars(schar, mchar, 0x11b8);
					schar = 0x1109;
					break;
				/*
				case 0x11bb:
					prev = combineKoreanChars(schar, mchar, 0x11ba);
					schar = 0x1109; 
					break;
				*/
				default: 

					if (constoe(echar)) {

						prev = combineKoreanChars(schar, mchar, 0);
						schar = constoe(echar); 
					} 
					break;
			}
			
			emit key( prev, prev, 0, true, false );

			mchar = c; echar = 0;

			return QChar(combineKoreanChars(schar, mchar, 0));
		
		} 
		else {
			schar = 0; mchar = 0; echar = 0;
			return QChar(c);
		}

	} 
	else if (c == ' ') return QChar(c);


	// and now... finally delete previous char, and return new char
	emit key( 8, Qt::Key_Backspace, 0, true, false );

	//printf ("out %x %x %x %x\n", schar, mchar, echar, c);


	return QChar (combineKoreanChars( schar, mchar, echar));

}

ushort Keyboard::combineKoreanChars(const ushort s, const ushort m, const ushort e) {

	return ((s - 0x1100) * 588) + ((m - 0x1161) * 28) + (e ? e - 0x11a7 : 0) + 0xac00;

}

ushort Keyboard::constoe(const ushort c) {

	// converts schars to echars if possible

	if (0x1100 <= c && c <= 0x1112) { // schar to echar

		switch (c) {
			case 0x1100: return 0x11a8;
			case 0x1101: return 0x11a9;
			case 0x1102: return 0x11ab;
			case 0x1103: return 0x11ae;
			case 0x1105: return 0x11af;
			case 0x1106: return 0x11b7;
			case 0x1107: return 0x11b8;
			case 0x1109: return 0x11ba;
			case 0x110a: return 0x11bb;
			case 0x110b: return 0x11bc;
			case 0x110c: return 0x11bd;
			case 0x110e: return 0x11be;
			case 0x110f: return 0x11bf;
			case 0x1110: return 0x11c0;
			case 0x1111: return 0x11c1;
			case 0x1112: return 0x11c2;
			default: return 0;

		}

	} else { //echar to schar

		switch (c) {
			case 0x11a8: return 0x1100;
			case 0x11a9: return 0x1101;
			case 0x11ab: return 0x1102;
			case 0x11ae: return 0x1103;
			case 0x11af: return 0x1105;
			case 0x11b7: return 0x1106;
			case 0x11b8: return 0x1107;
			case 0x11ba: return 0x1109;
			case 0x11bb: return 0x110a;
			case 0x11bc: return 0x110b;
			case 0x11bd: return 0x110c;
			case 0x11be: return 0x110e;
			case 0x11bf: return 0x110f;
			case 0x11c0: return 0x1110;
			case 0x11c1: return 0x1111;
			case 0x11c2: return 0x1112;
			default: return 0;

		}

	}
}