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-rw-r--r--lib/kformula/operatorelement.cc547
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diff --git a/lib/kformula/operatorelement.cc b/lib/kformula/operatorelement.cc
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+/* 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 <qpainter.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;
+ }
+ QString text;
+ for ( uint i = 0; i < countChildren(); i++ ) {
+ text.append( getChild( i )->getCharacter() );
+ }
+ QString 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 QDomElement &element )
+{
+ if ( ! BasicElement::readAttributesFromMathMLDom( element ) ) {
+ return false;
+ }
+
+ QString 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;
+ }
+ }
+ QString 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;
+ }
+ }
+ QString 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;
+ }
+ }
+ QString 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 );
+ }
+ }
+ QString 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 );
+ }
+ }
+ QString 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;
+ }
+ }
+ QString 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;
+ }
+ }
+ 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
generated by cgit v1.2.1 (git 2.18.0) at 2025-01-09 08:09:07 +0000