summaryrefslogtreecommitdiffstats
path: root/src/kernel/qkeysequence.cpp
blob: 727b443bf5fdd8700ab6b8b1dfd41be7ffbcf1e2 (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
/****************************************************************************
**
** Implementation of TQKeySequence class
**
** Created : 0108007
**
** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
**
** This file is part of the kernel module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file.  Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/

#include "ntqkeysequence.h"

#ifndef QT_NO_ACCEL

#include "ntqaccel.h"
#include "ntqshared.h"
#include "ntqvaluelist.h"
#ifndef QT_NO_REGEXP
# include "ntqregexp.h"
#endif

#ifdef Q_WS_MAC
#define TQMAC_CTRL  (TQString(TQChar(0x2318)))
#define TQMAC_META  (TQString(TQChar(0x2303)))
#define TQMAC_ALT   (TQString(TQChar(0x2325)))
#define TQMAC_SHIFT (TQString(TQChar(0x21E7)))
#endif

/*!
    \class TQKeySequence ntqkeysequence.h
    \brief The TQKeySequence class encapsulates a key sequence as used
    by accelerators.

    \ingroup misc

    A key sequence consists of up to four keyboard codes, each
    optionally combined with modifiers, e.g. \c SHIFT, \c CTRL, \c
    ALT, \c META, or \c UNICODE_ACCEL. For example, \c{CTRL + Key_P}
    might be a sequence used as a shortcut for printing a document.
    The key codes are listed in \c{ntqnamespace.h}. As an alternative,
    use \c UNICODE_ACCEL with the unicode code point of the character.
    For example, \c{UNICODE_ACCEL + 'A'} gives the same key sequence
    as \c Key_A.

    Key sequences can be constructed either from an integer key code,
    or from a human readable translatable string such as
    "Ctrl+X,Alt+Space". A key sequence can be cast to a TQString to
    obtain a human readable translated version of the sequence.
    Translations are done in the "TQAccel" context.

    \sa TQAccel
*/

/*!
    \enum TQt::SequenceMatch

    \value NoMatch Sequences have nothing in common
    \value PartialMatch Sequences match partially, but are not complete
    \value Identical Sequences do not differ
*/

static struct {
    int key;
    const char* name;
} keyname[] = {
    { TQt::Key_Space,	    QT_TRANSLATE_NOOP( "TQAccel", "Space" ) },
    { TQt::Key_Escape,	    QT_TRANSLATE_NOOP( "TQAccel", "Esc" ) },
    { TQt::Key_Tab,	    QT_TRANSLATE_NOOP( "TQAccel", "Tab" ) },
    { TQt::Key_Backtab,	    QT_TRANSLATE_NOOP( "TQAccel", "Backtab" ) },
    { TQt::Key_Backspace,    QT_TRANSLATE_NOOP( "TQAccel", "Backspace" ) },
    { TQt::Key_Return,	    QT_TRANSLATE_NOOP( "TQAccel", "Return" ) },
    { TQt::Key_Enter,	    QT_TRANSLATE_NOOP( "TQAccel", "Enter" ) },
    { TQt::Key_Insert,	    QT_TRANSLATE_NOOP( "TQAccel", "Ins" ) },
    { TQt::Key_Delete,	    QT_TRANSLATE_NOOP( "TQAccel", "Del" ) },
    { TQt::Key_Pause,	    QT_TRANSLATE_NOOP( "TQAccel", "Pause" ) },
    { TQt::Key_Print,	    QT_TRANSLATE_NOOP( "TQAccel", "Print" ) },
    { TQt::Key_SysReq,	    QT_TRANSLATE_NOOP( "TQAccel", "SysReq" ) },
    { TQt::Key_Home,	    QT_TRANSLATE_NOOP( "TQAccel", "Home" ) },
    { TQt::Key_End,	    QT_TRANSLATE_NOOP( "TQAccel", "End" ) },
    { TQt::Key_Left,	    QT_TRANSLATE_NOOP( "TQAccel", "Left" ) },
    { TQt::Key_Up,	    QT_TRANSLATE_NOOP( "TQAccel", "Up" ) },
    { TQt::Key_Right,	    QT_TRANSLATE_NOOP( "TQAccel", "Right" ) },
    { TQt::Key_Down,	    QT_TRANSLATE_NOOP( "TQAccel", "Down" ) },
    { TQt::Key_Prior,	    QT_TRANSLATE_NOOP( "TQAccel", "PgUp" ) },
    { TQt::Key_Next,	    QT_TRANSLATE_NOOP( "TQAccel", "PgDown" ) },
    { TQt::Key_CapsLock,	    QT_TRANSLATE_NOOP( "TQAccel", "CapsLock" ) },
    { TQt::Key_NumLock,	    QT_TRANSLATE_NOOP( "TQAccel", "NumLock" ) },
    { TQt::Key_ScrollLock,   QT_TRANSLATE_NOOP( "TQAccel", "ScrollLock" ) },
    { TQt::Key_Menu,	    QT_TRANSLATE_NOOP( "TQAccel", "Menu" ) },
    { TQt::Key_Help,	    QT_TRANSLATE_NOOP( "TQAccel", "Help" ) },

    // Multimedia keys
    { TQt::Key_Back,	    QT_TRANSLATE_NOOP( "TQAccel", "Back" ) },
    { TQt::Key_Forward,	    QT_TRANSLATE_NOOP( "TQAccel", "Forward" ) },
    { TQt::Key_Stop,	    QT_TRANSLATE_NOOP( "TQAccel", "Stop" ) },
    { TQt::Key_Refresh,	    QT_TRANSLATE_NOOP( "TQAccel", "Refresh" ) },
    { TQt::Key_VolumeDown,   QT_TRANSLATE_NOOP( "TQAccel", "Volume Down" ) },
    { TQt::Key_VolumeMute,   QT_TRANSLATE_NOOP( "TQAccel", "Volume Mute" ) },
    { TQt::Key_VolumeUp,	    QT_TRANSLATE_NOOP( "TQAccel", "Volume Up" ) },
    { TQt::Key_BassBoost,    QT_TRANSLATE_NOOP( "TQAccel", "Bass Boost" ) },
    { TQt::Key_BassUp,	    QT_TRANSLATE_NOOP( "TQAccel", "Bass Up" ) },
    { TQt::Key_BassDown,	    QT_TRANSLATE_NOOP( "TQAccel", "Bass Down" ) },
    { TQt::Key_TrebleUp,	    QT_TRANSLATE_NOOP( "TQAccel", "Treble Up" ) },
    { TQt::Key_TrebleDown,   QT_TRANSLATE_NOOP( "TQAccel", "Treble Down" ) },
    { TQt::Key_MediaPlay,    QT_TRANSLATE_NOOP( "TQAccel", "Media Play" ) },
    { TQt::Key_MediaStop,    QT_TRANSLATE_NOOP( "TQAccel", "Media Stop" ) },
    { TQt::Key_MediaPrev,    QT_TRANSLATE_NOOP( "TQAccel", "Media Previous" ) },
    { TQt::Key_MediaNext,    QT_TRANSLATE_NOOP( "TQAccel", "Media Next" ) },
    { TQt::Key_MediaRecord,  QT_TRANSLATE_NOOP( "TQAccel", "Media Record" ) },
    { TQt::Key_HomePage,	    QT_TRANSLATE_NOOP( "TQAccel", "Home" ) },
    { TQt::Key_Favorites,    QT_TRANSLATE_NOOP( "TQAccel", "Favorites" ) },
    { TQt::Key_Search,	    QT_TRANSLATE_NOOP( "TQAccel", "Search" ) },
    { TQt::Key_Standby,	    QT_TRANSLATE_NOOP( "TQAccel", "Standby" ) },
    { TQt::Key_OpenUrl,	    QT_TRANSLATE_NOOP( "TQAccel", "Open URL" ) },
    { TQt::Key_LaunchMail,   QT_TRANSLATE_NOOP( "TQAccel", "Launch Mail" ) },
    { TQt::Key_LaunchMedia,  QT_TRANSLATE_NOOP( "TQAccel", "Launch Media" ) },
    { TQt::Key_Launch0,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (0)" ) },
    { TQt::Key_Launch1,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (1)" ) },
    { TQt::Key_Launch2,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (2)" ) },
    { TQt::Key_Launch3,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (3)" ) },
    { TQt::Key_Launch4,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (4)" ) },
    { TQt::Key_Launch5,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (5)" ) },
    { TQt::Key_Launch6,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (6)" ) },
    { TQt::Key_Launch7,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (7)" ) },
    { TQt::Key_Launch8,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (8)" ) },
    { TQt::Key_Launch9,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (9)" ) },
    { TQt::Key_LaunchA,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (A)" ) },
    { TQt::Key_LaunchB,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (B)" ) },
    { TQt::Key_LaunchC,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (C)" ) },
    { TQt::Key_LaunchD,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (D)" ) },
    { TQt::Key_LaunchE,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (E)" ) },
    { TQt::Key_LaunchF,	    QT_TRANSLATE_NOOP( "TQAccel", "Launch (F)" ) },

    // --------------------------------------------------------------
    // More consistent namings
    { TQt::Key_Print,	    QT_TRANSLATE_NOOP( "TQAccel", "Print Screen" ) },
    { TQt::Key_Prior,	    QT_TRANSLATE_NOOP( "TQAccel", "Page Up" ) },
    { TQt::Key_Next,	    QT_TRANSLATE_NOOP( "TQAccel", "Page Down" ) },
    { TQt::Key_CapsLock,	    QT_TRANSLATE_NOOP( "TQAccel", "Caps Lock" ) },
    { TQt::Key_NumLock,	    QT_TRANSLATE_NOOP( "TQAccel", "Num Lock" ) },
    { TQt::Key_NumLock,	    QT_TRANSLATE_NOOP( "TQAccel", "Number Lock" ) },
    { TQt::Key_ScrollLock,   QT_TRANSLATE_NOOP( "TQAccel", "Scroll Lock" ) },
    { TQt::Key_Insert,	    QT_TRANSLATE_NOOP( "TQAccel", "Insert" ) },
    { TQt::Key_Delete,	    QT_TRANSLATE_NOOP( "TQAccel", "Delete" ) },
    { TQt::Key_Escape,	    QT_TRANSLATE_NOOP( "TQAccel", "Escape" ) },
    { TQt::Key_SysReq,	    QT_TRANSLATE_NOOP( "TQAccel", "System Request" ) },

    { 0, 0 }
};


class TQKeySequencePrivate : public TQShared
{
public:
    inline TQKeySequencePrivate()
    {
	key[0] = key[1] = key[2] = key[3] =  0;
    }
    inline TQKeySequencePrivate( TQKeySequencePrivate *copy )
    {
	key[0] = copy->key[0];
	key[1] = copy->key[1];
	key[2] = copy->key[2];
	key[3] = copy->key[3];
    }
    int key[4];
};


/*!
    Constructs an empty key sequence.
*/
TQKeySequence::TQKeySequence()
{
    d = new TQKeySequencePrivate();
    Q_CHECK_PTR( d );
}

/*!
    Creates a key sequence from the string \a key. For example
    "Ctrl+O" gives CTRL+UNICODE_ACCEL+'O'. The strings "Ctrl",
    "Shift", "Alt" and "Meta" are recognized, as well as their
    translated equivalents in the "TQAccel" context (using
    TQObject::tr()).

    Multiple key codes (up to four) may be entered by separating them
    with commas, e.g. "Alt+X,Ctrl+S,Q".

    This contructor is typically used with \link TQObject::tr() tr
    \endlink(), so that accelerator keys can be replaced in
    translations:

    \code
	TQPopupMenu *file = new TQPopupMenu( this );
	file->insertItem( tr("&Open..."), this, SLOT(open()),
			  TQKeySequence( tr("Ctrl+O", "File|Open") ) );
    \endcode

    Note the \c "File|Open" translator comment. It is by no means
    necessary, but it provides some context for the human translator.
*/
TQKeySequence::TQKeySequence( const TQString& key )
{
    d = new TQKeySequencePrivate();
    Q_CHECK_PTR( d );
    assign( key );
}


// ### BCI: Merge with constructor below for 4.0
/*!
    Constructs a key sequence that has a single \a key.

    The key codes are listed in \c{ntqnamespace.h} and can be
    combined with modifiers, e.g. with \c SHIFT, \c CTRL, \c
    ALT, \c META or \c UNICODE_ACCEL.
*/
TQKeySequence::TQKeySequence( int key )
{
    d = new TQKeySequencePrivate();
    Q_CHECK_PTR( d );
    d->key[0] = key;
}

/*!
    Constructs a key sequence with up to 4 keys \a k1, \a k2,
    \a k3 and \a k4.

    The key codes are listed in \c{ntqnamespace.h} and can be
    combined with modifiers, e.g. with \c SHIFT, \c CTRL, \c
    ALT, \c META or \c UNICODE_ACCEL.
*/
TQKeySequence::TQKeySequence( int k1, int k2, int k3, int k4 )
{
    d = new TQKeySequencePrivate();
    Q_CHECK_PTR( d );
    d->key[0] = k1;
    d->key[1] = k2;
    d->key[2] = k3;
    d->key[3] = k4;
}

/*!
    Copy constructor. Makes a copy of \a keysequence.
 */
TQKeySequence::TQKeySequence( const TQKeySequence& keysequence )
    : d( keysequence.d )
{
    d->ref();
}


/*!
    Destroys the key sequence.
 */
TQKeySequence::~TQKeySequence()
{
    if ( d->deref() )
	delete d;
}

/*!
    \internal
    KeySequences should never be modified, but rather just created.
    Internally though we do need to modify to keep pace in event
    delivery.
*/

void TQKeySequence::setKey( int key, int index )
{
#ifdef QT_CHECK_STATE
    if ( 0 > index && 4 < index ) {
	qWarning( "TQKeySequence::setKey: index %u out of range", index );
	return;
    }
#endif // QT_CHECK_STATE

    if ( 1 < d->count ) {
	TQKeySequencePrivate *newd = new TQKeySequencePrivate( d );
	d->deref();
	d = newd;
    }
    d->key[index] = key;
}

/*!
    Returns the number of keys in the key sequence.
    The maximum is 4.
 */
uint TQKeySequence::count() const
{
    if ( ! d->key[0] )
	return 0;
    if ( ! d->key[1] )
	return 1;
    if ( ! d->key[2] )
	return 2;
    if ( ! d->key[3] )
	return 3;
    return 4;
}


/*!
    Returns TRUE if the key sequence is empty; otherwise returns
    FALSE.
*/
bool TQKeySequence::isEmpty() const
{
    return !d->key[0];
}


/*!
    Adds the string \a keyseq to the key sequence. \a keyseq may
    contain up to four key codes, provided they are seperated by a
    comma, e.g. "Alt+X,Ctrl+S,Z"). Returns the number of key codes
    added.
*/
int TQKeySequence::assign( TQString keyseq )
{
    TQString part;
    int n = 0;
    int p = 0, diff = 0;

    // Run through the whole string, but stop
    // if we have 4 keys before the end.
    while ( keyseq.length() && n < 4 ) {
	// We MUST use something to seperate each sequence, and space
	// does not cut it, since some of the key names have space
	// in them.. (Let's hope no one translate with a comma in it:)
	p = keyseq.find( ',' );
	if ( -1 != p ) {
	    if ( ',' == keyseq[p+1] ) // e.g. 'Ctrl+,, Shift+,,'
		p++;
	    if ( ' ' == keyseq[p+1] ) { // Space after comma
		diff = 1;
		p++;
	    } else if ( '\0' == keyseq[p+1] ) { // Last comma 'Ctrl+,'
                p = -1;
	    } else {
		diff = 0;
	    }
	}
	part = keyseq.left( -1==p?keyseq.length():p-diff );
	keyseq = keyseq.right( -1==p?0:keyseq.length() - ( p + 1 ) );
	d->key[n] = decodeString( part );
	n++;
    }
    return n;
}

struct ModifKeyName {
    ModifKeyName() { }
    ModifKeyName(int q, TQString n) : qt_key(q), name(n) { }
    int qt_key;
    TQString name;
};

/*!
    Constructs a single key from the string \str.
 */
int TQKeySequence::decodeString( const TQString& str )
{
    int ret = 0;
    TQString accel = str;

    TQValueList<ModifKeyName> modifs;
#ifdef TQMAC_CTRL
    modifs << ModifKeyName( CTRL, TQMAC_CTRL );
#endif
#ifdef TQMAC_ALT
    modifs << ModifKeyName( ALT, TQMAC_ALT );
#endif
#ifdef TQMAC_META
    modifs << ModifKeyName( META, TQMAC_META );
#endif
#ifdef TQMAC_SHIFT
    modifs << ModifKeyName( SHIFT, TQMAC_SHIFT );
#endif
    modifs << ModifKeyName( CTRL, "ctrl+" ) << ModifKeyName( CTRL, TQAccel::tr("Ctrl").lower().append('+') );
    modifs << ModifKeyName( SHIFT, "shift+" ) << ModifKeyName( SHIFT, TQAccel::tr("Shift").lower().append('+') );
    modifs << ModifKeyName( ALT, "alt+" ) << ModifKeyName( ALT, TQAccel::tr("Alt").lower().append('+') );
    modifs << ModifKeyName( META, "meta+" ) << ModifKeyName( ALT, TQAccel::tr("Meta").lower().append('+') );
    TQString sl = accel.lower();
    for( TQValueList<ModifKeyName>::iterator it = modifs.begin(); it != modifs.end(); ++it ) {
	if ( sl.contains( (*it).name ) ) {
	    ret |= (*it).qt_key;
#ifndef QT_NO_REGEXP
	    accel.remove( TQRegExp(TQRegExp::escape((*it).name), FALSE) );
#else
	    accel.remove( (*it).name );
#endif
	    sl = accel.lower();
	}
    }

    int p = accel.findRev( '+', str.length() - 2 ); // -2 so that Ctrl++ works
    if( p > 0 )
	accel = accel.mid( p + 1 );

    int fnum = 0;
    if ( accel.length() == 1 ) {
	char ltr = accel[0].upper().latin1();
	// We can only upper A-Z without problems.
	if ( ltr < (char)Key_A || ltr > (char)Key_Z )
	    ret |= accel[0].unicode();
	else
	    ret |= accel[0].upper().unicode();
	ret |= UNICODE_ACCEL;
    } else if ( accel[0] == 'F' && (fnum = accel.mid(1).toInt()) && (fnum >= 1) && (fnum <= 35) ) {
        ret |= Key_F1 + fnum - 1;
    } else {
	// Check through translation table for the correct key name
	// ...or fall back on english table.
	bool found = FALSE;
	for ( int tran = 0; tran < 2; tran++ ) {
	    for ( int i = 0; keyname[i].name; i++ ) {
		if ( tran ? accel == TQAccel::tr(keyname[i].name)
			  : accel == keyname[i].name ) {
		    ret |= keyname[i].key;
		    found = TRUE;
		    break;
		}
	    }
	    if(found)
		break;
	}
    }
    return ret;
}


/*!
    Creates an accelerator string for \a key. For example,
    CTRL+Key_O gives "Ctrl+O". The strings, "Ctrl", "Shift", etc. are
    translated (using TQObject::tr()) in the "TQAccel" context.
 */
TQString TQKeySequence::encodeString( int key )
{
    TQString s;
#if defined(Q_OS_MAC) && !defined(TQWS)
    // On MAC the order is Meta, Alt, Shift, Control.
    if ( (key & META) == META )
	s += TQMAC_META;
    if ( (key & ALT) == ALT )
	s += TQMAC_ALT;
    if ( (key & SHIFT) == SHIFT )
	s += TQMAC_SHIFT;
    if ( (key & CTRL) == CTRL )
	s += TQMAC_CTRL;
#else
    // On other systems the order is Meta, Control, Alt, Shift
    if ( (key & META) == META )
	s += TQAccel::tr( "Meta" );
    if ( (key & CTRL) == CTRL ) {
	if ( !s.isEmpty() )
	    s += TQAccel::tr( "+" );
	s += TQAccel::tr( "Ctrl" );
    }
    if ( (key & ALT) == ALT ) {
	if ( !s.isEmpty() )
	    s += TQAccel::tr( "+" );
	s += TQAccel::tr( "Alt" );
    }
    if ( (key & SHIFT) == SHIFT ) {
	if ( !s.isEmpty() )
	    s += TQAccel::tr( "+" );
	s += TQAccel::tr( "Shift" );
    }
#endif


    key &= ~(SHIFT | CTRL | ALT | META );
    TQString p;

    if ( (key & UNICODE_ACCEL) == UNICODE_ACCEL ) {
	// Note: This character should NOT be upper()'ed, since
	// the encoded string should indicate EXACTLY what the
	// key represents! Hence a 'Ctrl+Shift+c' is posible to
	// represent, but is clearly impossible to trigger...
	p = TQChar(key & 0xffff);
    } else if ( key >= Key_F1 && key <= Key_F35 ) {
	p = TQAccel::tr( "F%1" ).arg(key - Key_F1 + 1);
    } else if ( key > Key_Space && key <= Key_AsciiTilde ) {
	p.sprintf( "%c", key );
    } else {
	int i=0;
	while (keyname[i].name) {
	    if ( key == keyname[i].key ) {
		p = TQAccel::tr(keyname[i].name);
		break;
	    }
	    ++i;
	}
	// If we can't find the actual translatable keyname,
	// fall back on the unicode representation of it...
	// Or else characters like Key_aring may not get displayed
	// ( Really depends on you locale )
	if ( !keyname[i].name )
	    // Note: This character should NOT be upper()'ed, see above!
	    p = TQChar(key & 0xffff);
    }

#ifndef Q_OS_MAC
    if ( !s.isEmpty() )
	s += TQAccel::tr( "+" );
#endif

    s += p;
    return s;
}

/*!
    Matches the sequence with \a seq. Returns \c TQt::Identical if
    successful, \c TQt::PartialMatch for matching but incomplete \a seq,
    and \c TQt::NoMatch if the sequences have nothing in common.
    Returns \c TQt::NoMatch if \a seq is shorter.
*/
TQt::SequenceMatch TQKeySequence::matches( const TQKeySequence& seq ) const
{
    uint userN = count(),
	  seqN = seq.count();

    if ( userN > seqN )
	return NoMatch;

    // If equal in length, we have a potential Identical sequence,
    // else we already know it can only be partial.
    SequenceMatch match = ( userN == seqN ? Identical : PartialMatch );

    for ( uint i = 0; i < userN; i++ ) {
	int userKey      = (*this)[i],
	    sequenceKey  = seq[i];

	if ( (userKey & ~TQt::UNICODE_ACCEL) != 
	     (sequenceKey & ~TQt::UNICODE_ACCEL) )
	    return NoMatch;
    }
    return match;
}


/*!
    Creates an accelerator string for the key sequence.
    For instance CTRL+Key_O gives "Ctrl+O". If the key sequence has
    multiple key codes they are returned comma-separated, e.g.
    "Alt+X, Ctrl+Y, Z". The strings, "Ctrl", "Shift", etc. are
    translated (using TQObject::tr()) in the "TQAccel" scope. If the key
    sequence has no keys, TQString::null is returned.

    On Mac OS X, the string returned resembles the sequence that is shown in
    the menubar.
*/
TQKeySequence::operator TQString() const
{
    int end = count();
    if ( !end ) return TQString::null;

    TQString complete;
    int i = 0;
    while ( i < end ) {
	complete += encodeString( d->key[i] );
	i++;
	if ( i != end)
	    complete += ", ";
    }
    return complete;
}


/*!
    \obsolete
    For backward compatibility: returns the first keycode
    as integer. If the key sequence is empty, 0 is returned.
 */
TQKeySequence::operator int () const
{
    if ( 1 <= count() )
	return d->key[0];
    return 0;
}


/*!
    Returns a reference to the element at position \a index in the key
    sequence. This can only be used to read an element.
 */
int TQKeySequence::operator[]( uint index ) const
{
#ifdef QT_CHECK_STATE
    if ( index > 4 ) {
	qWarning( "TQKeySequence::operator[]: index %u out of range", index );
	return 0;
    }
#endif // QT_CHECK_STATE
    return d->key[index];
}


/*!
    Assignment operator. Assigns \a keysequence to this
    object.
 */
TQKeySequence &TQKeySequence::operator=( const TQKeySequence & keysequence )
{
    keysequence.d->ref();
    if ( d->deref() )
	delete d;
    d = keysequence.d;
    return *this;
}


/*!
    Returns TRUE if \a keysequence is equal to this key
    sequence; otherwise returns FALSE.
 */


bool TQKeySequence::operator==( const TQKeySequence& keysequence ) const
{
    return ( (d->key[0]&~UNICODE_ACCEL) == (keysequence.d->key[0]&~UNICODE_ACCEL) &&
	     (d->key[1]&~UNICODE_ACCEL) == (keysequence.d->key[1]&~UNICODE_ACCEL) &&
	     (d->key[2]&~UNICODE_ACCEL) == (keysequence.d->key[2]&~UNICODE_ACCEL) &&
	     (d->key[3]&~UNICODE_ACCEL) == (keysequence.d->key[3]&~UNICODE_ACCEL) );
}


/*!
    Returns TRUE if \a keysequence is not equal to this key sequence;
    otherwise returns FALSE.
*/
bool TQKeySequence::operator!= ( const TQKeySequence& keysequence ) const
{
    TQKeySequence *that = (TQKeySequence*)this;
    return !( (*that) == keysequence );
}


/*****************************************************************************
  TQKeySequence stream functions
 *****************************************************************************/
#if !defined(QT_NO_DATASTREAM) && !defined(QT_NO_IMAGEIO)
/*!
    \relates TQKeySequence

    Writes the key sequence \a keysequence to the stream \a s.

    \sa \link datastreamformat.html Format of the TQDataStream operators \endlink
*/
TQDataStream &operator<<( TQDataStream &s, const TQKeySequence &keysequence )
{
    TQValueList<int> list;
    list += keysequence.d->key[0];
    list += keysequence.d->key[1];
    list += keysequence.d->key[2];
    list += keysequence.d->key[3];
    s << list;

    return s;
}


/*!
    \relates TQKeySequence

    Reads a key sequence from the stream \a s into the key sequence \a
    keysequence.

    \sa \link datastreamformat.html Format of the TQDataStream operators \endlink
*/
TQDataStream &operator>>( TQDataStream &s, TQKeySequence &keysequence )
{
    TQValueList<int> list;
    s >> list;

#ifdef QT_CHECK_STATE
    if ( 1 != list.count() && 4 != list.count() ) {
	qWarning( "Invalid TQKeySequence data in the datastream." );
	return s;
    }
#endif

    if ( 1 == list.count() ) {
	keysequence.d->key[0] = *list.at( 0 );
	keysequence.d->key[1] =
	    keysequence.d->key[2] =
	    keysequence.d->key[3] = 0;
    } else {
	keysequence.d->key[0] = *list.at( 0 );
	keysequence.d->key[1] = *list.at( 1 );
	keysequence.d->key[2] = *list.at( 2 );
	keysequence.d->key[3] = *list.at( 3 );
    }
    return s;
}

#endif //QT_NO_DATASTREAM

#endif //QT_NO_ACCEL