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1935 lines
59 KiB
1935 lines
59 KiB
/* This file is part of the KDE project
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Copyright (C) 2001 Andrea Rizzi <rizzi@kde.org>
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Ulrich Kuettler <ulrich.kuettler@mailbox.tu-dresden.de>
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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 <stdlib.h>
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#include <math.h>
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#include <tqpainter.h>
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#include <tqpaintdevice.h>
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#include <tqvaluestack.h>
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#include <kcommand.h>
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#include <kdebug.h>
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#include <tdelocale.h>
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//#include <boost/spirit.hpp>
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#include "MatrixDialog.h"
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#include "bracketelement.h"
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#include "creationstrategy.h"
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#include "elementtype.h"
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#include "elementvisitor.h"
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#include "formulacursor.h"
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#include "formulaelement.h"
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#include "fractionelement.h"
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#include "indexelement.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 "matrixelement.h"
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#include "rootelement.h"
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#include "sequenceelement.h"
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#include "sequenceparser.h"
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#include "spaceelement.h"
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#include "symbolelement.h"
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#include "symboltable.h"
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#include "textelement.h"
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#include "numberelement.h"
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#include "identifierelement.h"
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#include "operatorelement.h"
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#include <assert.h>
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KFORMULA_NAMESPACE_BEGIN
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//using namespace std;
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ElementCreationStrategy* SequenceElement::creationStrategy = 0;
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void SequenceElement::setCreationStrategy( ElementCreationStrategy* strategy )
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{
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creationStrategy = strategy;
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}
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void SequenceElement::setStyle( StyleElement *st )
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{
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style = st;
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}
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SequenceElement::SequenceElement(BasicElement* parent)
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: BasicElement(parent), parseTree(0), textSequence(true),singlePipe(true), style(0)
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{
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assert( creationStrategy != 0 );
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children.setAutoDelete(true);
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}
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SequenceElement::~SequenceElement()
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{
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delete parseTree;
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}
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SequenceElement::SequenceElement( const SequenceElement& other )
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: BasicElement( other )
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{
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children.setAutoDelete(true);
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uint count = other.children.count();
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for (uint i = 0; i < count; i++) {
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BasicElement* child = children.at(i)->clone();
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child->setParent( this );
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children.append( child );
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}
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}
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bool SequenceElement::accept( ElementVisitor* visitor )
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{
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return visitor->visit( this );
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}
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bool SequenceElement::readOnly( const FormulaCursor* ) const
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{
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return getParent()->readOnly( this );
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}
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/**
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* Returns the element the point is in.
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*/
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BasicElement* SequenceElement::goToPos( FormulaCursor* cursor, bool& handled,
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const LuPixelPoint& point, const LuPixelPoint& parentOrigin )
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{
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BasicElement* e = BasicElement::goToPos(cursor, handled, point, parentOrigin);
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if (e != 0) {
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LuPixelPoint myPos(parentOrigin.x() + getX(),
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parentOrigin.y() + getY());
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uint count = children.count();
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for (uint i = 0; i < count; i++) {
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BasicElement* child = children.at(i);
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e = child->goToPos(cursor, handled, point, myPos);
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if (e != 0) {
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if (!handled) {
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handled = true;
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if ((point.x() - myPos.x()) < (e->getX() + e->getWidth()*2/3)) {
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cursor->setTo(this, children.find(e));
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}
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else {
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cursor->setTo(this, children.find(e)+1);
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}
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}
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return e;
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}
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}
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luPixel dx = point.x() - myPos.x();
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//int dy = point.y() - myPos.y();
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for (uint i = 0; i < count; i++) {
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BasicElement* child = children.at(i);
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if (dx < child->getX()) {
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cursor->setTo( this, i );
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handled = true;
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return children.at( i );
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}
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}
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cursor->setTo(this, countChildren());
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handled = true;
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return this;
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}
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return 0;
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}
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bool SequenceElement::isEmpty()
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{
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uint count = children.count();
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for (uint i = 0; i < count; i++) {
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BasicElement* child = children.at(i);
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if (!child->isInvisible()) {
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return false;
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}
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}
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return true;
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}
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/**
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* Calculates our width and height and
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* our children's parentPosition.
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*/
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void SequenceElement::calcSizes( const ContextStyle& context,
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ContextStyle::TextStyle tstyle,
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ContextStyle::IndexStyle istyle,
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StyleAttributes& style )
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{
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double factor = style.sizeFactor();
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if (!isEmpty()) {
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luPixel width = 0;
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luPixel toBaseline = 0;
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luPixel fromBaseline = 0;
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width += context.ptToPixelX( getSpaceBefore( context, tstyle, factor ) );
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// Let's do all normal elements that have a base line.
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TQPtrListIterator<BasicElement> it( children );
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for ( ; it.current(); ++it ) {
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BasicElement* child = it.current();
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if ( !child->isInvisible() ) {
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child->calcSizes( context, tstyle, istyle, style );
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child->setX( width );
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width += child->getWidth();
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luPixel childBaseline = child->getBaseline();
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if ( childBaseline > -1 ) {
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toBaseline = TQMAX( toBaseline, childBaseline );
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fromBaseline = TQMAX( fromBaseline,
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child->getHeight() - childBaseline );
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}
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else {
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luPixel bl = child->getHeight()/2 + context.axisHeight( tstyle, factor );
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toBaseline = TQMAX( toBaseline, bl );
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fromBaseline = TQMAX( fromBaseline, child->getHeight() - bl );
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}
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}
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else {
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child->setX( width );
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}
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}
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width += context.ptToPixelX( getSpaceAfter( context, tstyle, factor ) );
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setWidth(width);
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setHeight(toBaseline+fromBaseline);
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setBaseline(toBaseline);
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setChildrenPositions();
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}
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else {
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luPixel w = context.getEmptyRectWidth( factor );
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luPixel h = context.getEmptyRectHeight( factor );
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setWidth( w );
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setHeight( h );
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setBaseline( h );
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//setMidline( h*.5 );
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}
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}
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void SequenceElement::setChildrenPositions()
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{
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TQPtrListIterator<BasicElement> it( children );
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for ( ; it.current(); ++it ) {
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BasicElement* child = it.current();
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child->setY(getBaseline() - child->getBaseline());
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}
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}
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/**
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* Draws the whole element including its children.
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* The `parentOrigin' is the point this element's parent starts.
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* We can use our parentPosition to get our own origin then.
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*/
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void SequenceElement::draw( TQPainter& painter, const LuPixelRect& r,
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const ContextStyle& context,
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ContextStyle::TextStyle tstyle,
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ContextStyle::IndexStyle istyle,
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StyleAttributes& style,
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const LuPixelPoint& parentOrigin )
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{
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LuPixelPoint myPos( parentOrigin.x() + getX(), parentOrigin.y() + getY() );
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// There might be zero sized elements that still want to be drawn at least
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// in edit mode. (EmptyElement)
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//if ( !LuPixelRect( myPos.x(), myPos.y(), getWidth(), getHeight() ).intersects( r ) )
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// return;
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if (!isEmpty()) {
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TQPtrListIterator<BasicElement> it( children );
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for (int i = 0 ; it.current(); i++) {
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BasicElement* child = it.current();
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if (!child->isInvisible()) {
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child->draw(painter, r, context, tstyle, istyle, style, myPos);
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// Each starting element draws the whole token
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// This only concerns TextElements.
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/*
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ElementType* token = child->getElementType();
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if ( token != 0 ) {
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it += token->end() - token->start();
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}
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else {
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++it;
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}
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*/
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}
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// else {
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++it;
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// }
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}
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}
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else {
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drawEmptyRect( painter, context, style.sizeFactor(), myPos );
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}
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// Debug
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//painter.setPen(TQt::green);
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//painter.drawRect(parentOrigin.x() + getX(), parentOrigin.y() + getY(),
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// getWidth(), getHeight());
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// painter.drawLine( context.layoutUnitToPixelX( parentOrigin.x() + getX() ),
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// context.layoutUnitToPixelY( parentOrigin.y() + getY() + axis( context, tstyle ) ),
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// context.layoutUnitToPixelX( parentOrigin.x() + getX() + getWidth() ),
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// context.layoutUnitToPixelY( parentOrigin.y() + getY() + axis( context, tstyle ) ) );
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// painter.setPen(TQt::red);
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// painter.drawLine( context.layoutUnitToPixelX( parentOrigin.x() + getX() ),
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// context.layoutUnitToPixelY( parentOrigin.y() + getY() + getBaseline() ),
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// context.layoutUnitToPixelX( parentOrigin.x() + getX() + getWidth() ),
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// context.layoutUnitToPixelY( parentOrigin.y() + getY() + getBaseline() ) );
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}
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void SequenceElement::dispatchFontCommand( FontCommand* cmd )
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{
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TQPtrListIterator<BasicElement> it( children );
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for ( ; it.current(); ++it ) {
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BasicElement* child = it.current();
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child->dispatchFontCommand( cmd );
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}
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}
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void SequenceElement::drawEmptyRect( TQPainter& painter, const ContextStyle& context,
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double factor, const LuPixelPoint& upperLeft )
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{
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if ( context.edit() ) {
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painter.setBrush(TQt::NoBrush);
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painter.setPen( TQPen( context.getEmptyColor(),
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context.layoutUnitToPixelX( context.getLineWidth( factor ) ) ) );
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painter.drawRect( context.layoutUnitToPixelX( upperLeft.x() ),
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context.layoutUnitToPixelY( upperLeft.y() ),
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context.layoutUnitToPixelX( getWidth() ),
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context.layoutUnitToPixelY( getHeight() ) );
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}
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}
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void SequenceElement::calcCursorSize( const ContextStyle& context,
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FormulaCursor* cursor, bool smallCursor )
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{
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LuPixelPoint point = widgetPos();
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uint pos = cursor->getPos();
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luPixel posX = getChildPosition( context, pos );
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luPixel height = getHeight();
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luPixel unitX = context.ptToLayoutUnitPixX( 1 );
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luPixel unitY = context.ptToLayoutUnitPixY( 1 );
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// Here are those evil constants that describe the cursor size.
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if ( cursor->isSelection() ) {
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uint mark = cursor->getMark();
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luPixel markX = getChildPosition( context, mark );
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luPixel x = TQMIN(posX, markX);
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luPixel width = abs(posX - markX);
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if ( smallCursor ) {
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cursor->cursorSize.setRect( point.x()+x, point.y(), width, height );
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}
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else {
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cursor->cursorSize.setRect( point.x()+x, point.y() - 2*unitY,
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width + unitX, height + 4*unitY );
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}
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}
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else {
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if ( smallCursor ) {
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cursor->cursorSize.setRect( point.x()+posX, point.y(),
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unitX, height );
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}
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else {
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cursor->cursorSize.setRect( point.x(), point.y() - 2*unitY,
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getWidth() + unitX, height + 4*unitY );
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}
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}
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cursor->cursorPoint.setX( point.x()+posX );
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cursor->cursorPoint.setY( point.y()+getHeight()/2 );
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}
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/**
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* If the cursor is inside a sequence it needs to be drawn.
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*/
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void SequenceElement::drawCursor( TQPainter& painter, const ContextStyle& context,
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StyleAttributes& style, FormulaCursor* cursor,
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bool smallCursor, bool activeCursor )
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{
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painter.setRasterOp( TQt::XorROP );
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if ( cursor->isSelection() ) {
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const LuPixelRect& r = cursor->cursorSize;
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painter.fillRect( context.layoutUnitToPixelX( r.x() ),
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context.layoutUnitToPixelY( r.y() ),
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context.layoutUnitToPixelX( r.width() ),
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context.layoutUnitToPixelY( r.height() ),
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TQt::white );
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}
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painter.setPen( TQPen( TQt::white,
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context.layoutUnitToPixelX( context.getLineWidth( style.sizeFactor() )/2 ) ) );
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const LuPixelPoint& point = cursor->getCursorPoint();
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const LuPixelRect& size = cursor->getCursorSize();
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if ( activeCursor )
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{
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int offset = 0;
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if ( cursor->isSelection() && cursor->getPos() > cursor->getMark() )
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offset = -1;
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painter.drawLine( context.layoutUnitToPixelX( point.x() ) + offset,
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context.layoutUnitToPixelY( size.top() ),
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context.layoutUnitToPixelX( point.x() ) + offset,
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context.layoutUnitToPixelY( size.bottom() )-1 );
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painter.drawLine( context.layoutUnitToPixelX( point.x() ) + offset + 1,
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context.layoutUnitToPixelY( size.top() ),
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context.layoutUnitToPixelX( point.x() ) + offset + 1,
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context.layoutUnitToPixelY( size.bottom() )-1 );
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}
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if ( !smallCursor && !cursor->isSelection() )
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painter.drawLine( context.layoutUnitToPixelX( size.left() ),
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context.layoutUnitToPixelY( size.bottom() )-1,
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context.layoutUnitToPixelX( size.right() )-1,
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context.layoutUnitToPixelY( size.bottom() )-1 );
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// This might be wrong but probably isn't.
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painter.setRasterOp( TQt::CopyROP );
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}
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luPixel SequenceElement::getChildPosition( const ContextStyle& context, uint child )
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{
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if (child < children.count()) {
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return children.at(child)->getX();
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}
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else {
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if (children.count() > 0) {
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return children.at(child-1)->getX() + children.at(child-1)->getWidth();
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}
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else {
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return context.ptToLayoutUnitPixX( 2 );
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}
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}
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}
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// navigation
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//
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// The elements are responsible to handle cursor movement themselves.
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// To do this they need to know the direction the cursor moves and
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// the element it comes from.
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//
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// The cursor might be in normal or in selection mode.
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/**
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* Enters this element while moving to the left starting inside
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* the element `from'. Searches for a cursor position inside
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* this element or to the left of it.
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*/
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void SequenceElement::moveLeft(FormulaCursor* cursor, BasicElement* from)
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{
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// Our parent asks us for a cursor position. Found.
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if (from == getParent()) {
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cursor->setTo(this, children.count());
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if ( cursor->isSelectionMode() ) {
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cursor->setMark( children.count() );
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}
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from->entered( this );
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}
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// We already owned the cursor. Ask next child then.
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else if (from == this) {
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if (cursor->getPos() > 0) {
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cursor->setTo(this, cursor->getPos()-1);
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// invisible elements are not visible so we move on.
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if (children.at(cursor->getPos())->isInvisible()) {
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moveLeft(cursor, this);
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}
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}
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else {
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// Needed because FormulaElement derives this.
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if (getParent() != 0) {
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getParent()->moveLeft(cursor, this);
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}
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else {
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formula()->moveOutLeft( cursor );
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}
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}
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}
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// The cursor came from one of our children or
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// something is wrong.
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else {
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int fromPos = children.find(from);
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if ( fromPos > 0 ) {
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children.at( fromPos - 1)->moveLeft( cursor, this );
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}
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// invisible elements are not visible so we move on.
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if (from->isInvisible()) {
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moveLeft(cursor, this);
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}
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formula()->tell( "" );
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}
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}
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/**
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* Enters this element while moving to the right starting inside
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* the element `from'. Searches for a cursor position inside
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* this element or to the right of it.
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*/
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void SequenceElement::moveRight(FormulaCursor* cursor, BasicElement* from)
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{
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// Our parent asks us for a cursor position. Found.
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if (from == getParent()) {
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cursor->setTo(this, 0);
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from->entered( this );
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}
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// We already owned the cursor. Ask next child then.
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else if (from == this) {
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uint pos = cursor->getPos();
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if (pos < children.count()) {
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cursor->setTo(this, pos+1);
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// invisible elements are not visible so we move on.
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if (children.at(pos)->isInvisible()) {
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moveRight(cursor, this);
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}
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}
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else {
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// Needed because FormulaElement derives this.
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if (getParent() != 0) {
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getParent()->moveRight(cursor, this);
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}
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else {
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formula()->moveOutRight( cursor );
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}
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}
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}
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// The cursor came from one of our children or
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// something is wrong.
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else {
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int fromPos = children.find(from);
|
|
if ( fromPos < children.count() - 1 ) {
|
|
children.at( fromPos + 1 )->moveDown( cursor, this );
|
|
}
|
|
else {
|
|
cursor->setTo(this, fromPos+1);
|
|
}
|
|
if (cursor->isSelectionMode()) {
|
|
cursor->setMark(fromPos);
|
|
}
|
|
|
|
// invisible elements are not visible so we move on.
|
|
if (from->isInvisible()) {
|
|
moveRight(cursor, this);
|
|
}
|
|
formula()->tell( "" );
|
|
}
|
|
}
|
|
|
|
|
|
void SequenceElement::moveWordLeft(FormulaCursor* cursor)
|
|
{
|
|
uint pos = cursor->getPos();
|
|
if (pos > 0) {
|
|
ElementType* type = children.at(pos-1)->getElementType();
|
|
if (type != 0) {
|
|
cursor->setTo(this, type->start());
|
|
}
|
|
}
|
|
else {
|
|
moveLeft(cursor, this);
|
|
}
|
|
}
|
|
|
|
|
|
void SequenceElement::moveWordRight(FormulaCursor* cursor)
|
|
{
|
|
uint pos = cursor->getPos();
|
|
if (pos < children.count()) {
|
|
ElementType* type = children.at(pos)->getElementType();
|
|
if (type != 0) {
|
|
cursor->setTo(this, type->end());
|
|
}
|
|
}
|
|
else {
|
|
moveRight(cursor, this);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Enters this element while moving up starting inside
|
|
* the element `from'. Searches for a cursor position inside
|
|
* this element or above it.
|
|
*/
|
|
void SequenceElement::moveUp(FormulaCursor* cursor, BasicElement* from)
|
|
{
|
|
if (from == getParent()) {
|
|
moveRight(cursor, this);
|
|
}
|
|
else if ( from == this ) {
|
|
if ( getParent() != 0 ) {
|
|
uint pos = cursor->getPos();
|
|
if ( pos < (children.count() - 1) / 2 ) {
|
|
getParent()->moveLeft( cursor, this );
|
|
}
|
|
else {
|
|
getParent()->moveRight( cursor, this );
|
|
}
|
|
}
|
|
else {
|
|
formula()->moveOutAbove( cursor );
|
|
}
|
|
}
|
|
else {
|
|
if (getParent() != 0) {
|
|
getParent()->moveUp(cursor, this);
|
|
}
|
|
else {
|
|
formula()->moveOutAbove( cursor );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Enters this element while moving down starting inside
|
|
* the element `from'. Searches for a cursor position inside
|
|
* this element or below it.
|
|
*/
|
|
void SequenceElement::moveDown(FormulaCursor* cursor, BasicElement* from)
|
|
{
|
|
if (from == getParent()) {
|
|
cursor->setTo(this, 0);
|
|
from->entered( this );
|
|
}
|
|
else if (from == this) {
|
|
uint pos = cursor->getPos();
|
|
if (pos < children.count()) {
|
|
children.at(pos)->moveDown(cursor, this);
|
|
}
|
|
}
|
|
else {
|
|
if (getParent() != 0) {
|
|
getParent()->moveDown(cursor, this);
|
|
}
|
|
else {
|
|
cursor->setTo( this, children.count() );
|
|
from->entered( this );
|
|
// formula()->moveOutBelow( cursor );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Moves the cursor to the first position in this sequence.
|
|
* (That is before the first child.)
|
|
*/
|
|
void SequenceElement::moveHome(FormulaCursor* cursor)
|
|
{
|
|
if (cursor->isSelectionMode()) {
|
|
BasicElement* element = cursor->getElement();
|
|
if (element != this) {
|
|
while (element->getParent() != this) {
|
|
element = element->getParent();
|
|
}
|
|
cursor->setMark(children.find(element)+1);
|
|
}
|
|
}
|
|
cursor->setTo(this, 0);
|
|
}
|
|
|
|
/**
|
|
* Moves the cursor to the last position in this sequence.
|
|
* (That is behind the last child.)
|
|
*/
|
|
void SequenceElement::moveEnd(FormulaCursor* cursor)
|
|
{
|
|
if (cursor->isSelectionMode()) {
|
|
BasicElement* element = cursor->getElement();
|
|
if (element != this) {
|
|
while (element->getParent() != this) {
|
|
element = element->getParent();
|
|
if (element == 0) {
|
|
cursor->setMark(children.count());
|
|
break;
|
|
}
|
|
}
|
|
if (element != 0) {
|
|
cursor->setMark(children.find(element));
|
|
}
|
|
}
|
|
}
|
|
cursor->setTo(this, children.count());
|
|
}
|
|
|
|
/**
|
|
* Sets the cursor inside this element to its start position.
|
|
* For most elements that is the main child.
|
|
*/
|
|
void SequenceElement::goInside(FormulaCursor* cursor)
|
|
{
|
|
cursor->setSelection(false);
|
|
cursor->setTo(this, 0);
|
|
}
|
|
|
|
/**
|
|
* Sets the cursor inside this element to its end position.
|
|
* For most elements that is the main child.
|
|
*/
|
|
void SequenceElement::goInsideLast(FormulaCursor* cursor)
|
|
{
|
|
cursor->setSelection(false);
|
|
cursor->setTo(this, children.count());
|
|
}
|
|
|
|
|
|
// children
|
|
|
|
/**
|
|
* Insert a new child in the sequence
|
|
*
|
|
* @returns true if succesful, i.e. if index is in range, otherwise returns
|
|
* false. The valid range is 0 to count(). The child is appended if index == count().
|
|
*
|
|
* @param index position in the sequence to insert the child
|
|
* @param child the child to insert in the sequence
|
|
*/
|
|
|
|
bool SequenceElement::insert( uint index, BasicElement *child )
|
|
{
|
|
return children.insert( index, child );
|
|
}
|
|
|
|
/**
|
|
* Removes the child. If this was the main child this element might
|
|
* request its own removal.
|
|
* The cursor is the one that caused the removal. It has to be moved
|
|
* to the place any user expects the cursor after that particular
|
|
* element has been removed.
|
|
*/
|
|
// void SequenceElement::removeChild(FormulaCursor* cursor, BasicElement* child)
|
|
// {
|
|
// int pos = children.find(child);
|
|
// formula()->elementRemoval(child, pos);
|
|
// cursor->setTo(this, pos);
|
|
// children.remove(pos);
|
|
// /*
|
|
// if len(self.children) == 0:
|
|
// if self.parent != None:
|
|
// self.parent.removeChild(cursor, self)
|
|
// return
|
|
// */
|
|
// formula()->changed();
|
|
// }
|
|
|
|
|
|
/**
|
|
* Inserts all new children at the cursor position. Places the
|
|
* cursor according to the direction. The inserted elements will
|
|
* be selected.
|
|
*
|
|
* The list will be emptied but stays the property of the caller.
|
|
*/
|
|
void SequenceElement::insert(FormulaCursor* cursor,
|
|
TQPtrList<BasicElement>& newChildren,
|
|
Direction direction)
|
|
{
|
|
int pos = cursor->getPos();
|
|
uint count = newChildren.count();
|
|
for (uint i = 0; i < count; i++) {
|
|
BasicElement* child = newChildren.take(0);
|
|
child->setParent(this);
|
|
children.insert(pos+i, child);
|
|
}
|
|
if (direction == beforeCursor) {
|
|
cursor->setTo(this, pos+count, pos);
|
|
}
|
|
else {
|
|
cursor->setTo(this, pos, pos+count);
|
|
}
|
|
|
|
formula()->changed();
|
|
parse();
|
|
}
|
|
|
|
|
|
/**
|
|
* Removes all selected children and returns them. Places the
|
|
* cursor to where the children have been.
|
|
*
|
|
* The ownership of the list is passed to the caller.
|
|
*/
|
|
void SequenceElement::remove(FormulaCursor* cursor,
|
|
TQPtrList<BasicElement>& removedChildren,
|
|
Direction direction)
|
|
{
|
|
if (cursor->isSelection()) {
|
|
int from = cursor->getSelectionStart();
|
|
int to = cursor->getSelectionEnd();
|
|
for (int i = from; i < to; i++) {
|
|
removeChild(removedChildren, from);
|
|
}
|
|
cursor->setTo(this, from);
|
|
cursor->setSelection(false);
|
|
}
|
|
else {
|
|
if (direction == beforeCursor) {
|
|
int pos = cursor->getPos() - 1;
|
|
if (pos >= 0) {
|
|
while (pos >= 0) {
|
|
BasicElement* child = children.at(pos);
|
|
formula()->elementRemoval(child);
|
|
children.take(pos);
|
|
removedChildren.prepend(child);
|
|
if (!child->isInvisible()) {
|
|
break;
|
|
}
|
|
pos--;
|
|
}
|
|
cursor->setTo(this, pos);
|
|
formula()->changed();
|
|
}
|
|
}
|
|
else {
|
|
uint pos = cursor->getPos();
|
|
if (pos < children.count()) {
|
|
while (pos < children.count()) {
|
|
BasicElement* child = children.at(pos);
|
|
formula()->elementRemoval(child);
|
|
children.take(pos);
|
|
removedChildren.append(child);
|
|
if (!child->isInvisible()) {
|
|
break;
|
|
}
|
|
}
|
|
// It is necessary to set the cursor to its old
|
|
// position because it got a notification and
|
|
// moved to the beginning of this sequence.
|
|
cursor->setTo(this, pos);
|
|
formula()->changed();
|
|
}
|
|
}
|
|
}
|
|
parse();
|
|
}
|
|
|
|
|
|
/**
|
|
* Removes the children at pos and appends it to the list.
|
|
*/
|
|
void SequenceElement::removeChild(TQPtrList<BasicElement>& removedChildren, int pos)
|
|
{
|
|
BasicElement* child = children.at(pos);
|
|
formula()->elementRemoval(child);
|
|
children.take(pos);
|
|
removedChildren.append(child);
|
|
//cerr << *removedChildren.at(0) << endl;
|
|
formula()->changed();
|
|
}
|
|
|
|
|
|
/**
|
|
* Moves the cursor to a normal place where new elements
|
|
* might be inserted.
|
|
*/
|
|
void SequenceElement::normalize(FormulaCursor* cursor, Direction)
|
|
{
|
|
cursor->setSelection(false);
|
|
}
|
|
|
|
|
|
/**
|
|
* Returns the child at the cursor.
|
|
* Does not care about the selection.
|
|
*/
|
|
BasicElement* SequenceElement::getChild( FormulaCursor* cursor, Direction direction )
|
|
{
|
|
if ( direction == beforeCursor ) {
|
|
if ( cursor->getPos() > 0 ) {
|
|
return children.at( cursor->getPos() - 1 );
|
|
}
|
|
}
|
|
else {
|
|
if ( cursor->getPos() < tqRound( children.count() ) ) {
|
|
return children.at( cursor->getPos() );
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets the cursor to select the child. The mark is placed before,
|
|
* the position behind it.
|
|
*/
|
|
void SequenceElement::selectChild(FormulaCursor* cursor, BasicElement* child)
|
|
{
|
|
int pos = children.find(child);
|
|
if (pos > -1) {
|
|
cursor->setTo(this, pos+1, pos);
|
|
}
|
|
}
|
|
|
|
void SequenceElement::childWillVanish(FormulaCursor* cursor, BasicElement* child)
|
|
{
|
|
int childPos = children.find(child);
|
|
if (childPos > -1) {
|
|
int pos = cursor->getPos();
|
|
if (pos > childPos) {
|
|
pos--;
|
|
}
|
|
int mark = cursor->getMark();
|
|
if (mark > childPos) {
|
|
mark--;
|
|
}
|
|
cursor->setTo(this, pos, mark);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Selects all children. The cursor is put behind, the mark before them.
|
|
*/
|
|
void SequenceElement::selectAllChildren(FormulaCursor* cursor)
|
|
{
|
|
cursor->setTo(this, children.count(), 0);
|
|
}
|
|
|
|
bool SequenceElement::onlyTextSelected( FormulaCursor* cursor )
|
|
{
|
|
if ( cursor->isSelection() ) {
|
|
uint from = TQMIN( cursor->getPos(), cursor->getMark() );
|
|
uint to = TQMAX( cursor->getPos(), cursor->getMark() );
|
|
for ( uint i = from; i < to; i++ ) {
|
|
BasicElement* element = getChild( i );
|
|
if ( element->getCharacter() == TQChar::null ) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
KCommand* SequenceElement::buildCommand( Container* container, Request* request )
|
|
{
|
|
FormulaCursor* cursor = container->activeCursor();
|
|
if ( cursor->isReadOnly() ) {
|
|
formula()->tell( i18n( "write protection" ) );
|
|
return 0;
|
|
}
|
|
|
|
switch ( *request ) {
|
|
case req_addText: {
|
|
KFCReplaceToken* command = new KFCReplaceToken( i18n("Add Text"), container );
|
|
TextRequest* tr = static_cast<TextRequest*>( request );
|
|
IdentifierElement* id = creationStrategy->createIdentifierElement();
|
|
command->addToken( id );
|
|
for ( uint i = 0; i < tr->text().length(); i++ ) {
|
|
TextElement* text = creationStrategy->createTextElement( tr->text()[i] );
|
|
command->addContent( id, text );
|
|
}
|
|
return command;
|
|
}
|
|
case req_addTextChar: {
|
|
KFCReplaceToken* command = new KFCReplaceToken( i18n("Add Text"), container );
|
|
TextCharRequest* tr = static_cast<TextCharRequest*>( request );
|
|
IdentifierElement* id = creationStrategy->createIdentifierElement();
|
|
TextElement* text = creationStrategy->createTextElement( tr->ch() );
|
|
command->addToken( id );
|
|
command->addContent( id, text );
|
|
return command;
|
|
}
|
|
|
|
case req_addOperator: {
|
|
KFCReplaceToken* command = new KFCReplaceToken( i18n("Add Operator"), container );
|
|
OperatorRequest* opr = static_cast<OperatorRequest*>( request );
|
|
OperatorElement* op = creationStrategy->createOperatorElement();
|
|
TextElement* text = creationStrategy->createTextElement( opr->ch() );
|
|
command->addToken( op );
|
|
command->addContent( op, text );
|
|
return command;
|
|
}
|
|
|
|
case req_addNumber: {
|
|
KFCReplaceToken* command = new KFCReplaceToken( i18n("Add Number"), container );
|
|
NumberRequest* nr = static_cast<NumberRequest*>( request );
|
|
NumberElement* num = creationStrategy->createNumberElement();
|
|
num->setParent( this );
|
|
TextElement* text = creationStrategy->createTextElement( nr->ch() );
|
|
text->setParent( num );
|
|
command->addToken( num );
|
|
command->addContent( num, text );
|
|
return command;
|
|
}
|
|
|
|
case req_addEmptyBox: {
|
|
EmptyElement* element = creationStrategy->createEmptyElement();
|
|
if ( element != 0 ) {
|
|
KFCReplace* command = new KFCReplace( i18n("Add Empty Box"), container );
|
|
command->addElement( element );
|
|
return command;
|
|
}
|
|
break;
|
|
}
|
|
case req_addNameSequence:
|
|
if ( onlyTextSelected( container->activeCursor() ) ) {
|
|
NameSequence* nameSequence = creationStrategy->createNameSequence();
|
|
if ( nameSequence != 0 ) {
|
|
KFCAddReplacing* command = new KFCAddReplacing( i18n( "Add Name" ), container );
|
|
command->setElement( nameSequence );
|
|
return command;
|
|
}
|
|
}
|
|
break;
|
|
case req_addBracket: {
|
|
BracketRequest* br = static_cast<BracketRequest*>( request );
|
|
BracketElement* bracketElement =
|
|
creationStrategy->createBracketElement( br->left(), br->right() );
|
|
if ( bracketElement != 0 ) {
|
|
KFCAddReplacing* command = new KFCAddReplacing(i18n("Add Bracket"), container);
|
|
command->setElement( bracketElement );
|
|
return command;
|
|
}
|
|
break;
|
|
}
|
|
case req_addOverline: {
|
|
OverlineElement* overline = creationStrategy->createOverlineElement();
|
|
if ( overline != 0 ) {
|
|
KFCAddReplacing* command = new KFCAddReplacing(i18n("Add Overline"), container);
|
|
command->setElement( overline );
|
|
return command;
|
|
}
|
|
break;
|
|
}
|
|
case req_addUnderline: {
|
|
UnderlineElement* underline = creationStrategy->createUnderlineElement();
|
|
if ( underline != 0 ) {
|
|
KFCAddReplacing* command = new KFCAddReplacing(i18n("Add Underline"), container);
|
|
command->setElement( underline );
|
|
return command;
|
|
}
|
|
break;
|
|
}
|
|
case req_addMultiline: {
|
|
MultilineElement* multiline = creationStrategy->createMultilineElement();
|
|
if ( multiline != 0 ) {
|
|
KFCAddReplacing* command = new KFCAddReplacing(i18n("Add Multiline"), container);
|
|
command->setElement( multiline );
|
|
return command;
|
|
}
|
|
break;
|
|
}
|
|
case req_addSpace: {
|
|
SpaceRequest* sr = static_cast<SpaceRequest*>( request );
|
|
SpaceElement* element = creationStrategy->createSpaceElement( sr->space() );
|
|
if ( element != 0 ) {
|
|
KFCReplace* command = new KFCReplace( i18n("Add Space"), container );
|
|
command->addElement( element );
|
|
return command;
|
|
}
|
|
break;
|
|
}
|
|
case req_addFraction: {
|
|
FractionElement* fraction = creationStrategy->createFractionElement();
|
|
if ( fraction != 0 ) {
|
|
KFCAddReplacing* command = new KFCAddReplacing(i18n("Add Fraction"), container);
|
|
command->setElement( fraction );
|
|
return command;
|
|
}
|
|
break;
|
|
}
|
|
case req_addRoot: {
|
|
RootElement* root = creationStrategy->createRootElement();
|
|
if ( root != 0 ) {
|
|
KFCAddReplacing* command = new KFCAddReplacing(i18n("Add Root"), container);
|
|
command->setElement( root );
|
|
return command;
|
|
}
|
|
break;
|
|
}
|
|
case req_addSymbol: {
|
|
SymbolRequest* sr = static_cast<SymbolRequest*>( request );
|
|
SymbolElement* symbol = creationStrategy->createSymbolElement( sr->type() );
|
|
if ( symbol != 0 ) {
|
|
KFCAddReplacing* command = new KFCAddReplacing( i18n( "Add Symbol" ), container );
|
|
command->setElement( symbol );
|
|
return command;
|
|
}
|
|
break;
|
|
}
|
|
case req_addOneByTwoMatrix: {
|
|
FractionElement* element = creationStrategy->createFractionElement();
|
|
if ( element != 0 ) {
|
|
KFCAddReplacing* command = new KFCAddReplacing( i18n("Add 1x2 Matrix"), container );
|
|
element->showLine(false);
|
|
command->setElement(element);
|
|
return command;
|
|
}
|
|
}
|
|
case req_addMatrix: {
|
|
MatrixRequest* mr = static_cast<MatrixRequest*>( request );
|
|
uint rows = mr->rows(), cols = mr->columns();
|
|
if ( ( rows == 0 ) || ( cols == 0 ) ) {
|
|
MatrixDialog* dialog = new MatrixDialog( 0 );
|
|
if ( dialog->exec() ) {
|
|
rows = dialog->h;
|
|
cols = dialog->w;
|
|
}
|
|
delete dialog;
|
|
}
|
|
|
|
if ( ( rows != 0 ) && ( cols != 0 ) ) {
|
|
KFCAddReplacing* command = new KFCAddReplacing( i18n( "Add Matrix" ), container );
|
|
command->setElement( creationStrategy->createMatrixElement( rows, cols ) );
|
|
return command;
|
|
}
|
|
else
|
|
return 0L;
|
|
}
|
|
case req_addIndex: {
|
|
if ( cursor->getPos() > 0 && !cursor->isSelection() ) {
|
|
IndexElement* element =
|
|
dynamic_cast<IndexElement*>( children.at( cursor->getPos()-1 ) );
|
|
if ( element != 0 ) {
|
|
element->goInside( cursor );
|
|
return element->buildCommand( container, request );
|
|
}
|
|
}
|
|
IndexElement* element = creationStrategy->createIndexElement();
|
|
if ( element != 0 ) {
|
|
if ( !cursor->isSelection() ) {
|
|
cursor->moveLeft( SelectMovement | WordMovement );
|
|
}
|
|
IndexRequest* ir = static_cast<IndexRequest*>( request );
|
|
KFCAddIndex* command = new KFCAddIndex( container, element,
|
|
element->getIndex( ir->index() ) );
|
|
return command;
|
|
}
|
|
break;
|
|
}
|
|
case req_removeEnclosing: {
|
|
if ( !cursor->isSelection() ) {
|
|
DirectedRemove* dr = static_cast<DirectedRemove*>( request );
|
|
KFCRemoveEnclosing* command = new KFCRemoveEnclosing( container, dr->direction() );
|
|
return command;
|
|
}
|
|
}
|
|
case req_remove: {
|
|
SequenceElement* sequence = cursor->normal();
|
|
if ( sequence &&
|
|
( sequence == sequence->formula() ) &&
|
|
( sequence->countChildren() == 0 ) ) {
|
|
sequence->formula()->removeFormula( cursor );
|
|
return 0;
|
|
}
|
|
else {
|
|
DirectedRemove* dr = static_cast<DirectedRemove*>( request );
|
|
|
|
// empty removes are not legal!
|
|
if ( !cursor->isSelection() ) {
|
|
if ( countChildren() > 0 ) {
|
|
if ( ( cursor->getPos() == 0 ) && ( dr->direction() == beforeCursor ) ) {
|
|
return 0;
|
|
}
|
|
if ( ( cursor->getPos() == countChildren() ) && ( dr->direction() == afterCursor ) ) {
|
|
return 0;
|
|
}
|
|
}
|
|
else if ( getParent() == 0 ) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
KFCRemove* command = new KFCRemove( container, dr->direction() );
|
|
return command;
|
|
}
|
|
}
|
|
case req_compactExpression: {
|
|
cursor->moveEnd();
|
|
cursor->moveRight();
|
|
formula()->cursorHasMoved( cursor );
|
|
break;
|
|
}
|
|
case req_makeGreek: {
|
|
TextElement* element = cursor->getActiveTextElement();
|
|
if ((element != 0) && !element->isSymbol()) {
|
|
cursor->selectActiveElement();
|
|
const SymbolTable& table = container->document()->getSymbolTable();
|
|
if (table.greekLetters().find(element->getCharacter()) != -1) {
|
|
KFCReplace* command = new KFCReplace( i18n( "Change Char to Symbol" ), container );
|
|
TextElement* symbol = creationStrategy->createTextElement( table.unicodeFromSymbolFont( element->getCharacter() ), true );
|
|
command->addElement( symbol );
|
|
return command;
|
|
}
|
|
cursor->setSelection( false );
|
|
}
|
|
break;
|
|
}
|
|
case req_paste:
|
|
case req_copy:
|
|
case req_cut:
|
|
break;
|
|
case req_formatBold:
|
|
case req_formatItalic: {
|
|
if ( cursor->isSelection() ) {
|
|
CharStyleRequest* csr = static_cast<CharStyleRequest*>( request );
|
|
CharStyle cs = normalChar;
|
|
if ( csr->bold() ) cs = static_cast<CharStyle>( cs | boldChar );
|
|
if ( csr->italic() ) cs = static_cast<CharStyle>( cs | italicChar );
|
|
CharStyleCommand* cmd = new CharStyleCommand( cs, i18n( "Change Char Style" ), container );
|
|
int end = cursor->getSelectionEnd();
|
|
for ( int i = cursor->getSelectionStart(); i<end; ++i ) {
|
|
cmd->addElement( children.at( i ) );
|
|
}
|
|
return cmd;
|
|
}
|
|
break;
|
|
}
|
|
case req_formatFamily: {
|
|
if ( cursor->isSelection() ) {
|
|
CharFamilyRequest* cfr = static_cast<CharFamilyRequest*>( request );
|
|
CharFamily cf = cfr->charFamily();
|
|
CharFamilyCommand* cmd = new CharFamilyCommand( cf, i18n( "Change Char Family" ), container );
|
|
int end = cursor->getSelectionEnd();
|
|
for ( int i = cursor->getSelectionStart(); i<end; ++i ) {
|
|
cmd->addElement( children.at( i ) );
|
|
}
|
|
return cmd;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
KCommand* SequenceElement::input( Container* container, TQKeyEvent* event )
|
|
{
|
|
TQChar ch = event->text().at( 0 );
|
|
if ( ch.isPrint() ) {
|
|
return input( container, ch );
|
|
}
|
|
else {
|
|
int action = event->key();
|
|
int state = event->state();
|
|
MoveFlag flag = movementFlag(state);
|
|
|
|
switch ( action ) {
|
|
case TQt::Key_BackSpace: {
|
|
DirectedRemove r( req_remove, beforeCursor );
|
|
return buildCommand( container, &r );
|
|
}
|
|
case TQt::Key_Delete: {
|
|
DirectedRemove r( req_remove, afterCursor );
|
|
return buildCommand( container, &r );
|
|
}
|
|
case TQt::Key_Left: {
|
|
FormulaCursor* cursor = container->activeCursor();
|
|
cursor->moveLeft( flag );
|
|
formula()->cursorHasMoved( cursor );
|
|
break;
|
|
}
|
|
case TQt::Key_Right: {
|
|
FormulaCursor* cursor = container->activeCursor();
|
|
cursor->moveRight( flag );
|
|
formula()->cursorHasMoved( cursor );
|
|
break;
|
|
}
|
|
case TQt::Key_Up: {
|
|
FormulaCursor* cursor = container->activeCursor();
|
|
cursor->moveUp( flag );
|
|
formula()->cursorHasMoved( cursor );
|
|
break;
|
|
}
|
|
case TQt::Key_Down: {
|
|
FormulaCursor* cursor = container->activeCursor();
|
|
cursor->moveDown( flag );
|
|
formula()->cursorHasMoved( cursor );
|
|
break;
|
|
}
|
|
case TQt::Key_Home: {
|
|
FormulaCursor* cursor = container->activeCursor();
|
|
cursor->moveHome( flag );
|
|
formula()->cursorHasMoved( cursor );
|
|
break;
|
|
}
|
|
case TQt::Key_End: {
|
|
FormulaCursor* cursor = container->activeCursor();
|
|
cursor->moveEnd( flag );
|
|
formula()->cursorHasMoved( cursor );
|
|
break;
|
|
}
|
|
default:
|
|
if ( state & TQt::ControlButton ) {
|
|
switch ( event->key() ) {
|
|
case TQt::Key_AsciiCircum: {
|
|
IndexRequest r( upperLeftPos );
|
|
return buildCommand( container, &r );
|
|
}
|
|
case TQt::Key_Underscore: {
|
|
IndexRequest r( lowerLeftPos );
|
|
return buildCommand( container, &r );
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
KCommand* SequenceElement::input( Container* container, TQChar ch )
|
|
{
|
|
int unicode = ch.unicode();
|
|
switch (unicode) {
|
|
case '(': {
|
|
BracketRequest r( container->document()->leftBracketChar(),
|
|
container->document()->rightBracketChar() );
|
|
singlePipe = true;
|
|
return buildCommand( container, &r );
|
|
}
|
|
case '[': {
|
|
BracketRequest r( LeftSquareBracket, RightSquareBracket );
|
|
singlePipe = true;
|
|
return buildCommand( container, &r );
|
|
}
|
|
case '{': {
|
|
BracketRequest r( LeftCurlyBracket, RightCurlyBracket );
|
|
singlePipe = true;
|
|
return buildCommand( container, &r );
|
|
}
|
|
case '|': {
|
|
if (!singlePipe) { // We have had 2 '|' in a row so we want brackets
|
|
|
|
DirectedRemove rDelete( req_remove, beforeCursor ); //Delete the previous '|' we dont need it any more
|
|
KCommand* command = buildCommand( container, &rDelete );
|
|
command->execute();
|
|
|
|
BracketRequest rBracket( LeftLineBracket , RightLineBracket);
|
|
singlePipe = true; //the next '|' will be a single pipe again
|
|
return buildCommand( container, &rBracket );
|
|
}
|
|
else { // We really do only want 1 '|'
|
|
TextCharRequest r(ch);
|
|
|
|
//in case another '|' character is entered right after this one, '| |' brackets are made; see above
|
|
singlePipe = false;
|
|
|
|
return buildCommand( container, &r );
|
|
}
|
|
}
|
|
case '^': {
|
|
IndexRequest r( upperRightPos );
|
|
singlePipe = true;
|
|
return buildCommand( container, &r );
|
|
}
|
|
case '_': {
|
|
IndexRequest r( lowerRightPos );
|
|
singlePipe = true;
|
|
return buildCommand( container, &r );
|
|
}
|
|
/*
|
|
case ' ': {
|
|
Request r( req_compactExpression );
|
|
singlePipe = true;
|
|
return buildCommand( container, &r );
|
|
}*/
|
|
case '}': {
|
|
Request r( req_addEmptyBox );
|
|
singlePipe = true;
|
|
return buildCommand( container, &r );
|
|
}
|
|
case ']':
|
|
case ')':
|
|
singlePipe = true;
|
|
break;
|
|
case '\\': {
|
|
Request r( req_addNameSequence );
|
|
singlePipe = true;
|
|
return buildCommand( container, &r );
|
|
}
|
|
default: {
|
|
singlePipe = true;
|
|
if ( ch.isPunct() || ch.isSymbol() ) {
|
|
OperatorRequest r( ch );
|
|
return buildCommand( container, &r );
|
|
}
|
|
if ( ch.isNumber() ) {
|
|
NumberRequest r( ch );
|
|
return buildCommand( container, &r );
|
|
}
|
|
TextCharRequest r( ch );
|
|
return buildCommand( container, &r );
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Stores the given childrens dom in the element.
|
|
*/
|
|
void SequenceElement::getChildrenDom( TQDomDocument& doc, TQDomElement elem,
|
|
uint from, uint to)
|
|
{
|
|
for (uint i = from; i < to; i++) {
|
|
TQDomElement tmpEleDom=children.at(i)->getElementDom(doc);
|
|
elem.appendChild(tmpEleDom);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Stores the given childrens MathML dom in the element.
|
|
*/
|
|
void SequenceElement::getChildrenMathMLDom( TQDomDocument& doc, TQDomNode& parent,
|
|
uint from, uint to)
|
|
{
|
|
for ( uint i = from; i < to; i++ ) {
|
|
children.at( i )->writeMathML( doc, parent, false );
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Builds elements from the given node and its siblings and
|
|
* puts them into the list.
|
|
* Returns false if an error occures.
|
|
*/
|
|
bool SequenceElement::buildChildrenFromDom(TQPtrList<BasicElement>& list, TQDomNode n)
|
|
{
|
|
while (!n.isNull()) {
|
|
if (n.isElement()) {
|
|
TQDomElement e = n.toElement();
|
|
BasicElement* child = 0;
|
|
TQString tag = e.tagName().upper();
|
|
|
|
child = createElement(tag, e);
|
|
if (child != 0) {
|
|
child->setParent(this);
|
|
if (child->buildFromDom(e)) {
|
|
list.append(child);
|
|
}
|
|
else {
|
|
delete child;
|
|
return false;
|
|
}
|
|
}
|
|
else {
|
|
return false;
|
|
}
|
|
}
|
|
n = n.nextSibling();
|
|
}
|
|
parse();
|
|
return true;
|
|
}
|
|
|
|
|
|
BasicElement* SequenceElement::createElement( TQString type, const TQDomElement& element )
|
|
{
|
|
return creationStrategy->createElement( type, element );
|
|
}
|
|
|
|
/**
|
|
* Appends our attributes to the dom element.
|
|
*/
|
|
void SequenceElement::writeDom(TQDomElement element)
|
|
{
|
|
BasicElement::writeDom(element);
|
|
|
|
uint count = children.count();
|
|
TQDomDocument doc = element.ownerDocument();
|
|
getChildrenDom(doc, element, 0, count);
|
|
}
|
|
|
|
/**
|
|
* Reads our attributes from the element.
|
|
* Returns false if it failed.
|
|
*/
|
|
bool SequenceElement::readAttributesFromDom(TQDomElement element)
|
|
{
|
|
if (!BasicElement::readAttributesFromDom(element)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Reads our content from the node. Sets the node to the next node
|
|
* that needs to be read.
|
|
* Returns false if it failed.
|
|
*/
|
|
bool SequenceElement::readContentFromDom(TQDomNode& node)
|
|
{
|
|
if (!BasicElement::readContentFromDom(node)) {
|
|
return false;
|
|
}
|
|
|
|
return buildChildrenFromDom(children, node);
|
|
}
|
|
|
|
|
|
void SequenceElement::parse()
|
|
{
|
|
delete parseTree;
|
|
|
|
textSequence = true;
|
|
for (BasicElement* element = children.first();
|
|
element != 0;
|
|
element = children.next()) {
|
|
|
|
// Those types are gone. Make sure they won't
|
|
// be used.
|
|
element->setElementType(0);
|
|
|
|
if (element->getCharacter().isNull()) {
|
|
textSequence = false;
|
|
}
|
|
}
|
|
|
|
const SymbolTable& symbols = formula()->getSymbolTable();
|
|
SequenceParser parser(symbols);
|
|
parseTree = parser.parse(children);
|
|
|
|
// With the IndexElement dynamically changing its text/non-text
|
|
// behaviour we need to reparse your parent, too. Hacky!
|
|
BasicElement* p = getParent();
|
|
if ( p != 0 ) {
|
|
SequenceElement* seq = dynamic_cast<SequenceElement*>( p->getParent() );
|
|
if ( seq != 0 ) {
|
|
seq->parse();
|
|
}
|
|
}
|
|
// debug
|
|
//parseTree->output();
|
|
}
|
|
|
|
|
|
bool SequenceElement::isFirstOfToken( BasicElement* child )
|
|
{
|
|
return ( child->getElementType() != 0 ) && isChildNumber( child->getElementType()->start(), child );
|
|
}
|
|
|
|
|
|
TQString SequenceElement::toLatex()
|
|
{
|
|
TQString content;
|
|
uint count = children.count();
|
|
for ( uint i = 0; i < count; i++ ) {
|
|
BasicElement* child = children.at( i );
|
|
// if ( isFirstOfToken( child ) ) {
|
|
// content += "";
|
|
// }
|
|
content += child->toLatex();
|
|
}
|
|
return content;
|
|
}
|
|
|
|
|
|
TQString SequenceElement::formulaString()
|
|
{
|
|
TQString content;
|
|
uint count = children.count();
|
|
for ( uint i = 0; i < count; i++ ) {
|
|
BasicElement* child = children.at( i );
|
|
//if ( isFirstOfToken( child ) ) {
|
|
// content += " ";
|
|
//}
|
|
content += child->formulaString();
|
|
}
|
|
return content;
|
|
}
|
|
|
|
|
|
void SequenceElement::writeMathMLContent( TQDomDocument& doc, TQDomElement& element, bool oasisFormat ) const
|
|
{
|
|
for ( TQPtrListIterator<BasicElement> it( children ); it.current(); ++it ) {
|
|
it.current()->writeMathML( doc, element, oasisFormat );
|
|
}
|
|
}
|
|
|
|
|
|
const BasicElement* SequenceElement::getChild( uint i ) const
|
|
{
|
|
TQPtrListIterator<BasicElement> it( children );
|
|
it += i;
|
|
return it.current();
|
|
}
|
|
|
|
|
|
int SequenceElement::childPos( const BasicElement* child ) const
|
|
{
|
|
TQPtrListIterator<BasicElement> it( children );
|
|
uint count = it.count();
|
|
for ( uint i=0; i<count; ++i, ++it ) {
|
|
if ( it.current() == child ) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
|
|
NameSequence::NameSequence( BasicElement* parent )
|
|
: SequenceElement( parent )
|
|
{
|
|
}
|
|
|
|
|
|
bool NameSequence::accept( ElementVisitor* visitor )
|
|
{
|
|
return visitor->visit( this );
|
|
}
|
|
|
|
|
|
void NameSequence::calcCursorSize( const ContextStyle& context,
|
|
FormulaCursor* cursor, bool smallCursor )
|
|
{
|
|
inherited::calcCursorSize( context, cursor, smallCursor );
|
|
LuPixelPoint point = widgetPos();
|
|
luPixel unitX = context.ptToLayoutUnitPixX( 1 );
|
|
luPixel unitY = context.ptToLayoutUnitPixY( 1 );
|
|
cursor->addCursorSize( LuPixelRect( point.x()-unitX, point.y()-unitY,
|
|
getWidth()+2*unitX, getHeight()+2*unitY ) );
|
|
}
|
|
|
|
void NameSequence::drawCursor( TQPainter& painter, const ContextStyle& context,
|
|
StyleAttributes& style, FormulaCursor* cursor,
|
|
bool smallCursor, bool activeCursor )
|
|
{
|
|
LuPixelPoint point = widgetPos();
|
|
painter.setPen( TQPen( context.getEmptyColor(),
|
|
context.layoutUnitToPixelX( context.getLineWidth( style.sizeFactor() )/2 ) ) );
|
|
luPixel unitX = context.ptToLayoutUnitPixX( 1 );
|
|
luPixel unitY = context.ptToLayoutUnitPixY( 1 );
|
|
painter.drawRect( context.layoutUnitToPixelX( point.x()-unitX ),
|
|
context.layoutUnitToPixelY( point.y()-unitY ),
|
|
context.layoutUnitToPixelX( getWidth()+2*unitX ),
|
|
context.layoutUnitToPixelY( getHeight()+2*unitY ) );
|
|
|
|
inherited::drawCursor( painter, context, style, cursor, smallCursor, activeCursor );
|
|
}
|
|
|
|
void NameSequence::moveWordLeft( FormulaCursor* cursor )
|
|
{
|
|
uint pos = cursor->getPos();
|
|
if ( pos > 0 ) {
|
|
cursor->setTo( this, 0 );
|
|
}
|
|
else {
|
|
moveLeft( cursor, this );
|
|
}
|
|
}
|
|
|
|
void NameSequence::moveWordRight( FormulaCursor* cursor )
|
|
{
|
|
int pos = cursor->getPos();
|
|
if ( pos < countChildren() ) {
|
|
cursor->setTo( this, countChildren() );
|
|
}
|
|
else {
|
|
moveRight( cursor, this );
|
|
}
|
|
}
|
|
|
|
|
|
KCommand* NameSequence::compactExpressionCmd( Container* container )
|
|
{
|
|
BasicElement* element = replaceElement( container->document()->getSymbolTable() );
|
|
if ( element != 0 ) {
|
|
getParent()->selectChild( container->activeCursor(), this );
|
|
|
|
KFCReplace* command = new KFCReplace( i18n( "Add Element" ), container );
|
|
command->addElement( element );
|
|
return command;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
KCommand* NameSequence::buildCommand( Container* container, Request* request )
|
|
{
|
|
switch ( *request ) {
|
|
case req_compactExpression:
|
|
return compactExpressionCmd( container );
|
|
case req_addSpace:
|
|
case req_addIndex:
|
|
case req_addMatrix:
|
|
case req_addOneByTwoMatrix:
|
|
case req_addSymbol:
|
|
case req_addRoot:
|
|
case req_addFraction:
|
|
case req_addBracket:
|
|
case req_addNameSequence:
|
|
return 0;
|
|
default:
|
|
break;
|
|
}
|
|
return inherited::buildCommand( container, request );
|
|
}
|
|
|
|
|
|
KCommand* NameSequence::input( Container* container, TQChar ch )
|
|
{
|
|
int unicode = ch.unicode();
|
|
switch (unicode) {
|
|
case '(':
|
|
case '[':
|
|
case '|':
|
|
case '^':
|
|
case '_':
|
|
case '}':
|
|
case ']':
|
|
case ')':
|
|
case '\\': {
|
|
// KCommand* compact = compactExpressionCmd( container );
|
|
// KCommand* cmd = static_cast<SequenceElement*>( getParent() )->input( container, ch );
|
|
// if ( compact != 0 ) {
|
|
// KMacroCommand* macro = new KMacroCommand( cmd->name() );
|
|
// macro->addCommand( compact );
|
|
// macro->addCommand( cmd );
|
|
// return macro;
|
|
// }
|
|
// else {
|
|
// return cmd;
|
|
// }
|
|
break;
|
|
}
|
|
case '{':
|
|
case ' ': {
|
|
Request r( req_compactExpression );
|
|
return buildCommand( container, &r );
|
|
}
|
|
default: {
|
|
TextCharRequest r( ch );
|
|
return buildCommand( container, &r );
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void NameSequence::setElementType( ElementType* t )
|
|
{
|
|
inherited::setElementType( t );
|
|
parse();
|
|
}
|
|
|
|
BasicElement* NameSequence::replaceElement( const SymbolTable& table )
|
|
{
|
|
TQString name = buildName();
|
|
TQChar ch = table.unicode( name );
|
|
if ( !ch.isNull() ) {
|
|
return new TextElement( ch, true );
|
|
}
|
|
else {
|
|
ch = table.unicode( i18n( name.latin1() ) );
|
|
if ( !ch.isNull() ) {
|
|
return new TextElement( ch, true );
|
|
}
|
|
}
|
|
|
|
if ( name == "!" ) return new SpaceElement( NEGTHIN );
|
|
if ( name == "," ) return new SpaceElement( THIN );
|
|
if ( name == ">" ) return new SpaceElement( MEDIUM );
|
|
if ( name == ";" ) return new SpaceElement( THICK );
|
|
if ( name == "quad" ) return new SpaceElement( QUAD );
|
|
|
|
if ( name == "frac" ) return new FractionElement();
|
|
if ( name == "atop" ) {
|
|
FractionElement* frac = new FractionElement();
|
|
frac->showLine( false );
|
|
return frac;
|
|
}
|
|
if ( name == "sqrt" ) return new RootElement();
|
|
|
|
return 0;
|
|
}
|
|
|
|
BasicElement* NameSequence::createElement( TQString type )
|
|
{
|
|
if ( type == "TEXT" ) return new TextElement();
|
|
return 0;
|
|
}
|
|
|
|
// void NameSequence::parse()
|
|
// {
|
|
// // A name sequence is known as name and so are its children.
|
|
// // Caution: this is fake!
|
|
// for ( int i = 0; i < countChildren(); i++ ) {
|
|
// getChild( i )->setElementType( getElementType() );
|
|
// }
|
|
// }
|
|
|
|
TQString NameSequence::buildName()
|
|
{
|
|
TQString name;
|
|
for ( uint i = 0; i < countChildren(); i++ ) {
|
|
name += getChild( i )->getCharacter();
|
|
}
|
|
return name;
|
|
}
|
|
|
|
bool NameSequence::isValidSelection( FormulaCursor* cursor )
|
|
{
|
|
SequenceElement* sequence = cursor->normal();
|
|
if ( sequence == 0 ) {
|
|
return false;
|
|
}
|
|
return sequence->onlyTextSelected( cursor );
|
|
}
|
|
|
|
int SequenceElement::buildChildrenFromMathMLDom(TQPtrList<BasicElement>& list, TQDomNode n)
|
|
{
|
|
while (!n.isNull()) {
|
|
int nodeNumber = 1;
|
|
if (n.isElement()) {
|
|
TQDomElement e = n.toElement();
|
|
BasicElement* child = 0;
|
|
TQString tag = e.tagName().lower();
|
|
|
|
kdDebug( DEBUGID ) << "Sequence Tag: " << tag << endl;
|
|
if ( tag == "semantics" ) { // Special case, just pick the first child
|
|
TQDomNode node = e.firstChild();
|
|
while( ! node.isElement() ) {
|
|
node = node.nextSibling();
|
|
if ( node.isNull() ) {
|
|
return -1;
|
|
}
|
|
}
|
|
e = node.toElement();
|
|
tag = e.tagName().lower();
|
|
}
|
|
child = creationStrategy->createElement(tag, e);
|
|
if (child != 0) {
|
|
child->setParent(this);
|
|
if (style != 0) {
|
|
child->setStyle(style);
|
|
}
|
|
nodeNumber = child->buildFromMathMLDom( e );
|
|
if ( nodeNumber != -1 ) {
|
|
list.append(child);
|
|
}
|
|
else {
|
|
delete child;
|
|
return -1;
|
|
}
|
|
}
|
|
else {
|
|
kdWarning() << "Unsupported MathML element: " << tag << endl;
|
|
}
|
|
}
|
|
for (int i = 0; i < nodeNumber; i++ ) {
|
|
if ( n.isNull() ) {
|
|
return -1;
|
|
}
|
|
n = n.nextSibling();
|
|
}
|
|
}
|
|
// Operator elements inside a sequence have to be parsed to get proper form
|
|
// value. Form value is needed to access operator dictionary and has to be
|
|
// obtained after sequence parsing since its value depends on position
|
|
// inside the sequence.
|
|
|
|
// If the sequence contains more than one element, if the first or last
|
|
// element are operators, they have to be marked differently
|
|
if ( list.count() > 1 ) {
|
|
if ( list.getFirst()->getElementName() == "mo" ) {
|
|
static_cast<OperatorElement*>( list.getFirst() )->setForm( PrefixForm );
|
|
}
|
|
if ( list.getLast()->getElementName() == "mo" ) {
|
|
static_cast<OperatorElement*>( list.getLast() )->setForm( PostfixForm );
|
|
}
|
|
for ( uint i = 1; i < list.count() - 1; i++ ) {
|
|
if ( list.at( i )->getElementName() == "mo" ) {
|
|
static_cast<OperatorElement*>( list.at( i ) )->setForm( InfixForm );
|
|
}
|
|
}
|
|
}
|
|
else if ( list.count() == 1 ) {
|
|
if ( list.getFirst()->getElementName() == "mo" ) {
|
|
static_cast<OperatorElement*>( list.getFirst() )->setForm( InfixForm );
|
|
}
|
|
}
|
|
parse();
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
*/
|
|
int SequenceElement::readContentFromMathMLDom(TQDomNode& node)
|
|
{
|
|
if ( BasicElement::readContentFromMathMLDom(node) == -1 ) {
|
|
return -1;
|
|
}
|
|
|
|
return buildChildrenFromMathMLDom(children, node);
|
|
}
|
|
|
|
int SequenceElement::buildMathMLChild( TQDomNode node )
|
|
{
|
|
int nodeCounter = 1;
|
|
while ( ! node.isElement() ) {
|
|
node = node.nextSibling();
|
|
nodeCounter++;
|
|
if ( node.isNull() ) {
|
|
return -1;
|
|
}
|
|
}
|
|
TQDomElement e = node.toElement();
|
|
BasicElement* child = 0;
|
|
TQString tag = e.tagName().lower();
|
|
|
|
child = creationStrategy->createElement(tag, e);
|
|
if (child != 0) {
|
|
child->setParent(this);
|
|
if (style != 0) {
|
|
child->setStyle(style);
|
|
}
|
|
if (child->buildFromMathMLDom(e) != -1) {
|
|
children.append(child);
|
|
}
|
|
else {
|
|
delete child;
|
|
return -1;
|
|
}
|
|
}
|
|
else {
|
|
return -1;
|
|
}
|
|
parse();
|
|
return nodeCounter;
|
|
}
|
|
|
|
|
|
|
|
KFORMULA_NAMESPACE_END
|