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-rw-r--r--inputmethods/handwriting/qimpenchar.cpp16
1 files changed, 15 insertions, 1 deletions
diff --git a/inputmethods/handwriting/qimpenchar.cpp b/inputmethods/handwriting/qimpenchar.cpp
index b83b2a4..96a0502 100644
--- a/inputmethods/handwriting/qimpenchar.cpp
+++ b/inputmethods/handwriting/qimpenchar.cpp
@@ -1,512 +1,526 @@
/**********************************************************************
** Copyright (C) 2000 Trolltech AS. All rights reserved.
**
** This file is part of Qtopia Environment.
**
** 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.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#include <qfile.h>
#include <qtl.h>
#include <math.h>
#include <limits.h>
#include <errno.h>
#include <qdatastream.h>
#include "qimpencombining.h"
#include "qimpenchar.h"
#include "opie2/odebug.h"
#define QIMPEN_MATCH_THRESHOLD 200000
const QIMPenSpecialKeys qimpen_specialKeys[] = {
{ Qt::Key_Escape, "[Esc]" },
{ Qt::Key_Tab, "[Tab]" },
{ Qt::Key_Backspace, "[BackSpace]" },
{ Qt::Key_Return, "[Return]" },
{ QIMPenChar::Caps, "[Uppercase]" },
{ QIMPenChar::CapsLock, "[Caps Lock]" },
{ QIMPenChar::Shortcut, "[Shortcut]" },
{ QIMPenChar::Punctuation, "[Punctuation]" },
{ QIMPenChar::Symbol, "[Symbol]" },
{ QIMPenChar::Extended, "[Extended]" },
{ Qt::Key_unknown, 0 } };
/*!
\class QIMPenChar qimpenchar.h
Handles a single character. Can calculate closeness of match to
another character.
*/
QIMPenChar::QIMPenChar()
{
flags = 0;
strokes.setAutoDelete( TRUE );
}
QIMPenChar::QIMPenChar( const QIMPenChar &chr )
{
strokes.setAutoDelete( TRUE );
ch = chr.ch;
flags = chr.flags;
d = chr.d;
QIMPenStrokeIterator it( chr.strokes );
while ( it.current() ) {
strokes.append( new QIMPenStroke( *it.current() ) );
++it;
}
}
QIMPenChar &QIMPenChar::operator=( const QIMPenChar &chr )
{
strokes.clear();
ch = chr.ch;
flags = chr.flags;
d = chr.d;
QIMPenStrokeIterator it( chr.strokes );
while ( it.current() ) {
strokes.append( new QIMPenStroke( *it.current() ) );
++it;
}
return *this;
}
QString QIMPenChar::name() const
{
QString n;
if ( (ch & 0x0000FFFF) == 0 ) {
int code = ch >> 16;
for ( int i = 0; qimpen_specialKeys[i].code != Qt::Key_unknown; i++ ) {
if ( qimpen_specialKeys[i].code == code ) {
n = qimpen_specialKeys[i].name;
break;
}
}
} else {
n = QChar( ch & 0x0000FFFF );
}
return n;
}
void QIMPenChar::clear()
{
ch = 0;
flags = 0;
d = QString::null;
strokes.clear();
}
unsigned int QIMPenChar::strokeLength( int s ) const
{
QIMPenStrokeIterator it( strokes );
while ( it.current() && s ) {
++it;
--s;
}
if ( it.current() )
return it.current()->length();
return 0;
}
/*!
Add a stroke to the character
*/
void QIMPenChar::addStroke( QIMPenStroke *st )
{
QIMPenStroke *stroke = new QIMPenStroke( *st );
strokes.append( stroke );
}
/*!
Return an indicator of the closeness of this character to \a pen.
Lower value is better.
*/
int QIMPenChar::match( QIMPenChar *pen )
{
/*
if ( strokes.count() > pen->strokes.count() )
return INT_MAX;
*/
int err = 0;
int maxErr = 0;
int diff = 0;
QIMPenStrokeIterator it1( strokes );
QIMPenStrokeIterator it2( pen->strokes );
err = it1.current()->match( it2.current() );
if ( err > maxErr )
maxErr = err;
++it1;
++it2;
while ( err < 400000 && it1.current() && it2.current() ) {
QPoint p1 = it1.current()->boundingRect().center() -
strokes.getFirst()->boundingRect().center();
QPoint p2 = it2.current()->boundingRect().center() -
pen->strokes.getFirst()->boundingRect().center();
int xdiff = QABS( p1.x() - p2.x() ) - 6;
int ydiff = QABS( p1.y() - p2.y() ) - 5;
if ( xdiff < 0 )
xdiff = 0;
if ( ydiff < 0 )
ydiff = 0;
if ( xdiff > 10 || ydiff > 10 ) { // not a chance
#ifdef DEBUG_QIMPEN
odebug << "char " << pen->ch <<", stroke starting pt diff excessive" << oendl;
#endif
return INT_MAX;
}
diff += xdiff*xdiff + ydiff*ydiff;
err = it1.current()->match( it2.current() );
if ( err > maxErr )
maxErr = err;
++it1;
++it2;
}
maxErr += diff * diff * 6; // magic weighting :)
#ifdef DEBUG_QIMPEN
odebug << "char: " << pen->ch << ", maxErr " << maxErr << ", diff " << diff << ", " << strokes.count() << oendl;
#endif
return maxErr;
}
/*!
Return the bounding rect of this character. It may have sides with
negative coords since its origin is where the user started drawing
the character.
*/
QRect QIMPenChar::boundingRect()
{
QRect br;
QIMPenStroke *st = strokes.first();
while ( st ) {
br |= st->boundingRect();
st = strokes.next();
}
return br;
}
/*!
Write the character's data to the stream.
*/
QDataStream &operator<< (QDataStream &s, const QIMPenChar &ws)
{
s << ws.ch;
s << ws.flags;
if ( ws.flags & QIMPenChar::Data )
s << ws.d;
s << ws.strokes.count();
QIMPenStrokeIterator it( ws.strokes );
while ( it.current() ) {
s << *it.current();
++it;
}
return s;
}
/*!
Read the character's data from the stream.
*/
QDataStream &operator>> (QDataStream &s, QIMPenChar &ws)
{
s >> ws.ch;
s >> ws.flags;
if ( ws.flags & QIMPenChar::Data )
s >> ws.d;
unsigned size;
s >> size;
for ( unsigned i = 0; i < size; i++ ) {
QIMPenStroke *st = new QIMPenStroke();
s >> *st;
ws.strokes.append( st );
}
return s;
}
//===========================================================================
bool QIMPenCharMatch::operator>( const QIMPenCharMatch &m )
{
return error > m.error;
}
bool QIMPenCharMatch::operator<( const QIMPenCharMatch &m )
{
return error < m.error;
}
bool QIMPenCharMatch::operator<=( const QIMPenCharMatch &m )
{
return error <= m.error;
}
//===========================================================================
/*!
\class QIMPenCharSet qimpenchar.h
Maintains a set of related characters.
*/
QIMPenCharSet::QIMPenCharSet()
{
chars.setAutoDelete( TRUE );
desc = "Unnamed";
csTitle = "abc";
csType = Unknown;
maxStrokes = 0;
}
/*!
Construct and load a characters set from file \a fn.
*/
QIMPenCharSet::QIMPenCharSet( const QString &fn )
{
chars.setAutoDelete( TRUE );
desc = "Unnamed";
csTitle = "abc";
csType = Unknown;
maxStrokes = 0;
load( fn, System );
}
const QString &QIMPenCharSet::filename( Domain d ) const
{
if ( d == System )
return sysFilename;
else
return userFilename;
}
void QIMPenCharSet::setFilename( const QString &fn, Domain d )
{
if ( d == System )
sysFilename = fn;
else if ( d == User )
userFilename = fn;
}
/*!
Load a character set from file \a fn.
*/
bool QIMPenCharSet::load( const QString &fn, Domain d )
{
setFilename( fn, d );
bool ok = FALSE;
QFile file( fn );
if ( file.open( IO_ReadOnly ) ) {
QDataStream ds( &file );
QString version;
ds >> version;
ds >> csTitle;
ds >> desc;
int major = version.mid( 4, 1 ).toInt();
int minor = version.mid( 6 ).toInt();
if ( major >= 1 && minor > 0 ) {
ds >> (Q_INT8 &)csType;
} else {
if ( csTitle == "abc" )
csType = Lower;
else if ( csTitle == "ABC" )
csType = Upper;
else if ( csTitle == "123" )
csType = Numeric;
else if ( fn == "Combining" )
csType = Combining;
}
while ( !ds.atEnd() ) {
QIMPenChar *pc = new QIMPenChar;
ds >> *pc;
if ( d == User )
markDeleted( pc->character() ); // override system
+ if ( !pc->testFlag( QIMPenChar::Deleted ) )
addChar( pc );
}
if ( file.status() == IO_Ok )
ok = TRUE;
}
setHidden ( false );
return ok;
}
/*!
Save this character set.
*/
bool QIMPenCharSet::save( Domain d )
{
if ( filename( d ).isEmpty() )
return FALSE;
if ( hidden() )
return TRUE;
bool ok = FALSE;
QString fn = filename( d );
QString tmpFn = fn + ".new";
QFile file( tmpFn );
if ( file.open( IO_WriteOnly|IO_Raw ) ) {
QByteArray buf;
QDataStream ds( buf, IO_WriteOnly );
ds << QString( "QPT 1.1" );
ds << csTitle;
ds << desc;
ds << (Q_INT8)csType;
QIMPenCharIterator ci( chars );
for ( ; ci.current(); ++ci ) {
QIMPenChar *pc = ci.current();
+/*
+ * If the Domain is System and the Char is marked System - OR
+ * the domain is User, the Char is User and it's not deleted - OR
+ * the domain is User, the Char is System and it is deleted - AND
+ * the character is not an automated Combined Character
+ *
+ * This is required to ensure that we don't save user defined chars that have been deleted, but
+ * we *DO* save System chars that have been deleted. There is still the issue of deleted combined
+ * chars but I'm not sure how to tackle that yet
+ *
+ */
+
if ( ( ( (d == System) && pc->testFlag( QIMPenChar::System ) ) ||
- ( (d == User) && !pc->testFlag( QIMPenChar::System ) ) ) &&
+ ( (d == User) && !pc->testFlag( QIMPenChar::System ) && !pc->testFlag( QIMPenChar::Deleted ) ) ||
+ ( (d == User) && pc->testFlag( QIMPenChar::System ) && pc->testFlag( QIMPenChar::Deleted ) ) ) &&
( !pc->testFlag (QIMPenChar::Combined ) ) ) {
ds << *pc;
}
}
file.writeBlock( buf );
file.close();
if ( file.status() == IO_Ok )
ok = TRUE;
}
if ( ok ) {
if ( ::rename( tmpFn.latin1(), fn.latin1() ) < 0 ) {
owarn << "problem renaming file " <<tmpFn.latin1() << " to "<< fn.latin1()
<< ", errno: " << errno << oendl;
// remove the tmp file, otherwise, it will just lay around...
QFile::remove( tmpFn.latin1() );
ok = FALSE;
}
}
return ok;
}
QIMPenChar *QIMPenCharSet::at( int i )
{
return chars.at(i);
}
void QIMPenCharSet::markDeleted( uint ch )
{
QIMPenCharIterator ci( chars );
for ( ; ci.current(); ++ci ) {
QIMPenChar *pc = ci.current();
if ( pc->character() == ch && pc->testFlag( QIMPenChar::System ) )
pc->setFlag( QIMPenChar::Deleted );
}
}
/*!
Find the best matches for \a ch in this character set.
*/
QIMPenCharMatchList QIMPenCharSet::match( QIMPenChar *ch )
{
QIMPenCharMatchList matches;
QIMPenCharIterator ci( chars );
for ( ; ci.current(); ++ci ) {
QIMPenChar *tmplChar = ci.current();
if ( tmplChar->testFlag( QIMPenChar::Deleted ) ) {
continue;
}
int err;
if ( ch->penStrokes().count() <= tmplChar->penStrokes().count() ) {
err = ch->match( tmplChar );
if ( err <= QIMPEN_MATCH_THRESHOLD ) {
if (tmplChar->penStrokes().count() != ch->penStrokes().count())
err = QMIN(err*3, QIMPEN_MATCH_THRESHOLD);
QIMPenCharMatchList::Iterator it;
for ( it = matches.begin(); it != matches.end(); ++it ) {
if ( (*it).penChar->character() == tmplChar->character() &&
(*it).penChar->penStrokes().count() == tmplChar->penStrokes().count() ) {
if ( (*it).error > err )
(*it).error = err;
break;
}
}
if ( it == matches.end() ) {
QIMPenCharMatch m;
m.error = err;
m.penChar = tmplChar;
matches.append( m );
}
}
}
}
qHeapSort( matches );
/*
QIMPenCharMatchList::Iterator it;
for ( it = matches.begin(); it != matches.end(); ++it ) {
odebug << "Match: \'" << (*it).penChar->character() "\', error " << (*it).error ", strokes " <<(*it).penChar->penStrokes().count() << oendl;
}
*/
return matches;
}
/*!
Add a character \a ch to this set.
QIMPenCharSet will delete this character when it is no longer needed.
*/
void QIMPenCharSet::addChar( QIMPenChar *ch )
{
if ( ch->penStrokes().count() > maxStrokes )
maxStrokes = ch->penStrokes().count();
chars.append( ch );
}
/*!
Remove a character by reference \a ch from this set.
QIMPenCharSet will delete this character.
*/
void QIMPenCharSet::removeChar( QIMPenChar *ch )
{
chars.remove( ch );
}
/*!
Move the character up the list of characters.
*/
void QIMPenCharSet::up( QIMPenChar *ch )
{
int idx = chars.findRef( ch );
if ( idx > 0 ) {
chars.take();
chars.insert( idx - 1, ch );
}
}
/*!
Move the character down the list of characters.
*/
void QIMPenCharSet::down( QIMPenChar *ch )
{
int idx = chars.findRef( ch );
if ( idx >= 0 && idx < (int)chars.count() - 1 ) {
chars.take();
chars.insert( idx + 1, ch );
}
}