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koffice/lib/kformula/operatorelement.cc

548 lines
20 KiB

/* This file is part of the KDE project
Copyright (C) 2006 Alfredo Beaumont Sainz <alfredo.beaumont@gmail.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <algorithm>
#include <tqpainter.h>
#include <klocale.h>
#include "elementtype.h"
#include "sequenceelement.h"
#include "textelement.h"
#include "fontstyle.h"
#include "operatordictionary.h"
#include "operatorelement.h"
#include "identifierelement.h"
#include "numberelement.h"
#include "kformulacommand.h"
#include "kformulacontainer.h"
#include "kformuladocument.h"
#include "formulaelement.h"
#include "creationstrategy.h"
KFORMULA_NAMESPACE_BEGIN
OperatorElement::OperatorElement( BasicElement* parent ) : TokenElement( parent ),
m_form( NoForm ),
m_lspaceType( ThickMathSpace ),
m_rspaceType( ThickMathSpace ),
m_maxSizeType( InfinitySize ),
m_minSizeType( RelativeSize ),
m_minSize( 1 ),
m_fence( false ),
m_separator( false ),
m_stretchy( false ),
m_symmetric( true ),
m_largeOp( false ),
m_movableLimits( false ),
m_accent( false ),
m_customForm( false ),
m_customFence( false ),
m_customSeparator( false ),
m_customLSpace( false ),
m_customRSpace( false ),
m_customStretchy( false ),
m_customSymmetric( false ),
m_customMaxSize( false ),
m_customMinSize( false ),
m_customLargeOp( false ),
m_customMovableLimits( false ),
m_customAccent( false )
{
}
void OperatorElement::setForm( FormType type )
{
if ( ! m_customForm ) { // Set by an attribute has higher priority
m_form = type;
}
if ( ! isTextOnly() ) { // Only text content can be dictionary keys
return;
}
TQString text;
for ( uint i = 0; i < countChildren(); i++ ) {
text.append( getChild( i )->getCharacter() );
}
TQString form;
switch ( m_form ) {
case PrefixForm:
form = "prefix";
break;
case InfixForm:
form = "infix";
break;
case PostfixForm:
form = "postfix";
break;
default:
// Should not happen
kdWarning( DEBUGID ) << "Invalid `form' attribute value\n";
return;
}
DictionaryKey key = { text.utf8(), form.ascii() };
const OperatorDictionary* begin = operators;
const OperatorDictionary* end = operators + OperatorDictionary::size();
const OperatorDictionary* pos = std::lower_bound( begin, end, key );
if ( pos != end && pos->key == key ) { // Entry found !
if ( ! m_customFence ) {
m_fence = pos->fence;
}
if ( ! m_customSeparator ) {
m_separator = pos->separator;
}
if ( ! m_customLSpace ) {
m_lspace = getSize( pos->lspace, &m_lspaceType );
if ( m_lspaceType == NoSize ) {
m_lspaceType = getSpace( pos->lspace );
}
}
if ( ! m_customRSpace ) {
m_rspace = getSize( pos->rspace, &m_rspaceType );
if ( m_rspaceType == NoSize ) {
m_rspaceType = getSpace( pos->rspace );
}
}
if ( ! m_customStretchy ) {
m_stretchy = pos->stretchy;
}
if ( ! m_customSymmetric ) {
m_symmetric = pos->symmetric;
}
if ( ! m_customMaxSize ) {
if ( qstrcmp( pos->maxsize, "infinity" ) == 0 ) {
m_maxSizeType = InfinitySize;
}
else {
m_maxSize = getSize( pos->maxsize, &m_maxSizeType );
if ( m_maxSizeType == NoSize ) {
m_maxSizeType = getSpace( pos->maxsize );
}
}
}
if ( ! m_customMinSize ) {
m_minSize = getSize( pos->minsize, &m_minSizeType );
if ( m_minSizeType == NoSize ) {
m_minSizeType = getSpace( pos->minsize );
}
}
if ( ! m_customLargeOp ) {
m_largeOp = pos->largeop;
}
if ( ! m_customMovableLimits ) {
m_movableLimits = pos->movablelimits;
}
if ( ! m_customAccent ) {
m_accent = pos->accent;
}
}
}
/*
* Token elements' content has to be of homogeneous type. Every token element
* must (TODO: check this) appear inside a non-token sequence, and thus, if
* the command asks for a different content, a new element has to be created in
* parent sequence.
*/
KCommand* OperatorElement::buildCommand( Container* container, Request* request )
{
FormulaCursor* cursor = container->activeCursor();
if ( cursor->isReadOnly() ) {
formula()->tell( i18n( "write protection" ) );
return 0;
}
if ( *request == req_addOperator ) {
KFCReplace* command = new KFCReplace( i18n("Add Operator"), container );
OperatorRequest* opr = static_cast<OperatorRequest*>( request );
TextElement* element = creationStrategy->createTextElement( opr->ch(), true );
command->addElement( element );
return command;
}
if ( countChildren() == 0 || cursor->getPos() == countChildren() ) {
// We are in the last position, so it's easy, call the parent to
// create a new child
SequenceElement* parent = static_cast<SequenceElement*>( getParent() );
if ( parent ) {
uint pos = parent->childPos( this );
cursor->setTo( parent, pos + 1);
return parent->buildCommand( container, request );
}
}
if ( cursor->getPos() == 0 ) {
SequenceElement* parent = static_cast<SequenceElement*>( getParent() );
if ( parent ) {
uint pos = parent->childPos( this );
cursor->setTo( parent, pos );
return parent->buildCommand( container, request );
}
}
// We are in the middle of a token, so:
// a) Cut from mark to the end
// b) Create a new token and add an element from key pressed
// c) Create a new token and add elements cut previously
// d) Move cursor to parent so that it command execution works fine
switch( *request ) {
case req_addTextChar: {
KFCSplitToken* command = new KFCSplitToken( i18n("Add Text"), container );
TextCharRequest* tr = static_cast<TextCharRequest*>( request );
IdentifierElement* id = creationStrategy->createIdentifierElement();
TextElement* text = creationStrategy->createTextElement( tr->ch() );
command->addCursor( cursor );
command->addToken( id );
command->addContent( id, text );
SequenceElement* parent = static_cast< SequenceElement* >( getParent() );
if ( parent ) {
cursor->setTo( parent, parent->childPos( this ) + 1 );
}
return command;
}
case req_addText: {
KFCSplitToken* command = new KFCSplitToken( i18n("Add Text"), container );
TextRequest* tr = static_cast<TextRequest*>( request );
IdentifierElement* id = creationStrategy->createIdentifierElement();
command->addCursor( cursor );
command->addToken( id );
for ( uint i = 0; i < tr->text().length(); i++ ) {
TextElement* text = creationStrategy->createTextElement( tr->text()[i] );
command->addContent( id, text );
}
SequenceElement* parent = static_cast< SequenceElement* >( getParent() );
if ( parent ) {
cursor->setTo( parent, parent->childPos( this ) + 1 );
}
return command;
}
case req_addNumber: {
KFCSplitToken* command = new KFCSplitToken( i18n("Add Number"), container );
NumberRequest* nr = static_cast<NumberRequest*>( request );
NumberElement* num = creationStrategy->createNumberElement();
TextElement* text = creationStrategy->createTextElement( nr->ch() );
command->addCursor( cursor );
command->addToken( num );
command->addContent( num, text );
SequenceElement* parent = static_cast< SequenceElement* >( getParent() );
if ( parent ) {
cursor->setTo( parent, parent->childPos( this ) + 1 );
}
return command;
}
case req_addEmptyBox:
case req_addNameSequence:
case req_addBracket:
case req_addSpace:
case req_addFraction:
case req_addRoot:
case req_addSymbol:
case req_addOneByTwoMatrix:
case req_addMatrix: {
uint pos = static_cast<SequenceElement*>(getParent())->childPos( this );
cursor->setTo( getParent(), pos + 1);
return getParent()->buildCommand( container, request );
}
default:
return SequenceElement::buildCommand( container, request );
}
return 0;
}
bool OperatorElement::readAttributesFromMathMLDom( const TQDomElement &element )
{
if ( ! BasicElement::readAttributesFromMathMLDom( element ) ) {
return false;
}
TQString formStr = element.attribute( "form" ).stripWhiteSpace().lower();
if ( ! formStr.isNull() ) {
m_customForm = true;
if ( formStr == "prefix" ) {
m_form = PrefixForm;
}
else if ( formStr == "infix" ) {
m_form = InfixForm;
}
else if ( formStr == "postfix" ) {
m_form = PostfixForm;
}
else {
kdWarning( DEBUGID ) << "Invalid value for attribute `form': " << formStr << endl;
m_customForm = false;
}
}
TQString fenceStr = element.attribute( "fence" ).stripWhiteSpace().lower();
if ( ! fenceStr.isNull() ) {
m_customFence = true;
if ( fenceStr == "true" ) {
m_fence = true;
}
else if ( fenceStr == "false" ) {
m_fence = false;
}
else {
kdWarning( DEBUGID ) << "Invalid value for attribute `fence': " << fenceStr << endl;
m_customFence = false;
}
}
TQString separatorStr = element.attribute( "separator" ).stripWhiteSpace().lower();
if ( ! separatorStr.isNull() ) {
m_customSeparator = true;
if ( separatorStr == "true" ) {
m_separator = true;
}
else if ( separatorStr == "false" ) {
m_separator = false;
}
else {
kdWarning( DEBUGID ) << "Invalid value for attribute `separator': " << separatorStr << endl;
m_customSeparator = false;
}
}
TQString lspaceStr = element.attribute( "lspace" ).stripWhiteSpace().lower();
if ( ! lspaceStr.isNull() ) {
m_customLSpace = true;
m_lspace = getSize( lspaceStr, &m_lspaceType );
if ( m_lspaceType == NoSize ) {
m_lspaceType = getSpace( lspaceStr );
}
}
TQString rspaceStr = element.attribute( "rspace" ).stripWhiteSpace().lower();
if ( ! rspaceStr.isNull() ) {
m_customRSpace = true;
m_rspace = getSize( rspaceStr, &m_rspaceType );
if ( m_rspaceType == NoSize ) {
m_rspaceType = getSpace( rspaceStr );
}
}
TQString stretchyStr = element.attribute( "stretchy" ).stripWhiteSpace().lower();
if ( ! stretchyStr.isNull() ) {
m_customStretchy = true;
if ( stretchyStr == "true" ) {
m_stretchy = true;
}
else if ( stretchyStr == "false" ) {
m_stretchy = false;
}
else {
kdWarning( DEBUGID ) << "Invalid value for attribute `stretchy': " << stretchyStr << endl;
m_customStretchy = false;
}
}
TQString symmetricStr = element.attribute( "symmetric" ).stripWhiteSpace().lower();
if ( ! symmetricStr.isNull() ) {
m_customSymmetric = true;
if ( symmetricStr == "true" ) {
m_symmetric = true;
}
else if ( symmetricStr == "false" ) {
m_symmetric = false;
}
else {
kdWarning( DEBUGID ) << "Invalid value for attribute `symmetric': " << symmetricStr << endl;
m_customSymmetric = false;
}
}
TQString maxsizeStr = element.attribute( "maxsize" ).stripWhiteSpace().lower();
if ( ! maxsizeStr.isNull() ) {
m_customMaxSize = true;
if ( maxsizeStr == "infinity" ) {
m_maxSizeType = InfinitySize;
}
else {
m_maxSize = getSize( maxsizeStr, &m_maxSizeType );
if ( m_maxSizeType == NoSize ) {
m_maxSizeType = getSpace( maxsizeStr );
}
}
}
TQString minsizeStr = element.attribute( "minsize" ).stripWhiteSpace().lower();
if ( ! minsizeStr.isNull() ) {
m_customMinSize = true;
m_minSize = getSize( minsizeStr, &m_minSizeType );
if ( m_minSizeType == NoSize ) {
m_minSizeType = getSpace( minsizeStr );
}
}
TQString largeopStr = element.attribute( "largeop" ).stripWhiteSpace().lower();
if ( ! largeopStr.isNull() ) {
m_customLargeOp = true;
if ( largeopStr == "true" ) {
m_largeOp = true;
}
else if ( largeopStr == "false" ) {
m_largeOp = false;
}
else {
kdWarning( DEBUGID ) << "Invalid value for attribute `largeop': " << largeopStr << endl;
m_customLargeOp = false;
}
}
TQString movablelimitsStr = element.attribute( "movablelimits" ).stripWhiteSpace().lower();
if ( ! movablelimitsStr.isNull() ) {
m_customMovableLimits = true;
if ( movablelimitsStr == "true" ) {
m_movableLimits = true;
}
else if ( movablelimitsStr == "false" ) {
m_movableLimits = false;
}
else {
kdWarning( DEBUGID ) << "Invalid value for attribute `movablelimits': " << movablelimitsStr << endl;
m_customMovableLimits = false;
}
}
TQString accentStr = element.attribute( "accent" ).stripWhiteSpace().lower();
if ( ! accentStr.isNull() ) {
m_customAccent = true;
if ( accentStr == "true" ) {
m_accent = true;
}
else if ( accentStr == "false" ) {
m_accent = false;
}
else {
kdWarning( DEBUGID ) << "Invalid value for attribute `accent': " << accentStr << endl;
m_customAccent = false;
}
}
return true;
}
void OperatorElement::writeMathMLAttributes( TQDomElement& element ) const
{
if ( m_customForm ) {
switch ( m_form ) {
case PrefixForm:
element.setAttribute( "form", "prefix" );
break;
case InfixForm:
element.setAttribute( "form", "infix" );
break;
case PostfixForm:
element.setAttribute( "form", "postfix" );
default:
break;
}
}
if ( m_customFence ) {
element.setAttribute( "fence", m_fence ? "true" : "false" );
}
if ( m_customSeparator ) {
element.setAttribute( "separator", m_separator ? "true" : "false" );
}
if ( m_customLSpace ) {
writeSizeAttribute( element, "lspace", m_lspaceType, m_lspace );
}
if ( m_customRSpace ) {
writeSizeAttribute( element, "rspace", m_rspaceType, m_rspace );
}
if ( m_customStretchy ) {
element.setAttribute( "stretchy", m_stretchy ? "true" : "false" );
}
if ( m_customSymmetric ) {
element.setAttribute( "symmetric", m_symmetric ? "true" : "false" );
}
if ( m_customMaxSize ) {
writeSizeAttribute( element, "maxsize", m_maxSizeType, m_maxSize );
}
if ( m_customMinSize ) {
writeSizeAttribute( element, "minsize", m_minSizeType, m_minSize );
}
if ( m_customLargeOp ) {
element.setAttribute( "largeop", m_largeOp ? "true" : "false" );
}
if ( m_customMovableLimits ) {
element.setAttribute( "movablelimits", m_movableLimits ? "true" : "false" );
}
if ( m_customAccent ) {
element.setAttribute( "accent", m_accent ? "true" : "false" );
}
}
void OperatorElement::writeSizeAttribute( TQDomElement& element, const TQString &attr, SizeType type, double length ) const
{
switch ( type ) {
case InfinitySize:
element.setAttribute( attr, "infinity" );
break;
case AbsoluteSize:
element.setAttribute( attr, TQString( "%1pt" ).arg( length ) );
break;
case RelativeSize:
element.setAttribute( attr, TQString( "%1% " ).arg( length * 100.0 ) );
break;
case PixelSize:
element.setAttribute( attr, TQString( "%1px " ).arg( length ) );
break;
case NegativeVeryVeryThinMathSpace:
element.setAttribute( attr, "negativeveryverythinmathspace" );
break;
case NegativeVeryThinMathSpace:
element.setAttribute( attr, "negativeverythinmathspace" );
break;
case NegativeThinMathSpace:
element.setAttribute( attr, "negativethinmathspace" );
break;
case NegativeMediumMathSpace:
element.setAttribute( attr, "negativemediummathspace" );
break;
case NegativeThickMathSpace:
element.setAttribute( attr, "negativethickmathspace" );
break;
case NegativeVeryThickMathSpace:
element.setAttribute( attr, "negativeverythickmathspace" );
break;
case NegativeVeryVeryThickMathSpace:
element.setAttribute( attr, "negativeveryverythickmathspace" );
break;
case VeryVeryThinMathSpace:
element.setAttribute( attr, "veryverythinmathspace" );
break;
case VeryThinMathSpace:
element.setAttribute( attr, "verythinmathspace" );
break;
case ThinMathSpace:
element.setAttribute( attr, "thinmathspace" );
break;
case MediumMathSpace:
element.setAttribute( attr, "mediummathspace" );
break;
case ThickMathSpace:
element.setAttribute( attr, "thickmathspace" );
break;
case VeryThickMathSpace:
element.setAttribute( attr, "verythickmathspace" );
break;
case VeryVeryThickMathSpace:
element.setAttribute( attr, "veryverythickmathspace" );
break;
default:
break;
}
}
KFORMULA_NAMESPACE_END