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