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tqt3/src/kernel/qkeysequence.cpp

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/****************************************************************************
**
** 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();
TQ_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();
TQ_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();
TQ_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();
TQ_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 ) {
tqWarning( "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 ) {
tqWarning( "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() ) {
tqWarning( "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
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