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kformula/flake FormulaEditor.cpp Go to the documentation of this file. /* This file is part of the KDE project Copyright (C) 2001 Andrea Rizzi <rizzi@kde.org> Ulrich Kuettler <ulrich.kuettler@mailbox.tu-dresden.de> 2006 Martin Pfeiffer <hubipete@gmx.net> 2009 Jeremias Epperlein <jeeree@web.de> 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 "FormulaEditor.h" #include "BasicElement.h" #include "RowElement.h" #include "FixedElement.h" #include "NumberElement.h" #include "TableElement.h" #include "TableEntryElement.h" #include "TableRowElement.h" #include "ElementFactory.h" #include "OperatorElement.h" #include "IdentifierElement.h" #include "ElementFactory.h" #include "FormulaCommand.h" #include <QPainter> #include <QPen> #include <algorithm> #include <QObject> #include <kdebug.h> #include <klocale.h> #include <QUndoCommand> #include <KoOdfLoadingContext.h> #include <KoOdfStylesReader.h> FormulaEditor::FormulaEditor( FormulaCursor cursor, FormulaData* data ) { m_cursor=cursor; m_data=data; } FormulaEditor::FormulaEditor ( FormulaData* data ) { m_cursor=FormulaCursor(data->formulaElement(),0); m_data=data; } void FormulaEditor::paint( QPainter& painter ) const { m_cursor.paint(painter); } FormulaCommand* FormulaEditor::insertText( const QString& text ) { FormulaCommand *undo = 0; m_inputBuffer = text; if (m_cursor.insideToken()) { TokenElement* token=static_cast<TokenElement*>(m_cursor.currentElement()); if (m_cursor.hasSelection()) { undo=new FormulaCommandReplaceText(token,m_cursor.selection().first,m_cursor.selection().second-m_cursor.selection().first,text); } else { undo=new FormulaCommandReplaceText(token,m_cursor.position(),0,text); } } else { TokenElement* token = static_cast<TokenElement*> (ElementFactory::createElement(tokenType(text[0]),0)); token->insertText(0,text); undo=insertElement(token); if (undo) { undo->setRedoCursorPosition(FormulaCursor(token,text.length())); } } if (undo) { undo->setText(i18n("Add text")); } return undo; } FormulaCommand* FormulaEditor::insertMathML( const QString& data ) { // setup a DOM structure and start the actual loading process KoXmlDocument tmpDocument; tmpDocument.setContent( QString(data), false, 0, 0, 0 ); BasicElement* element=ElementFactory::createElement(tmpDocument.documentElement().tagName(),0); element->readMathML( tmpDocument.documentElement() ); // and load the new formula FormulaCommand* command=insertElement( element ); kDebug()<<"Inserting "<< tmpDocument.documentElement().tagName(); if (command==0) { delete element; } return command; } FormulaCommand* FormulaEditor::changeTable ( bool insert, bool rows ) { FormulaCommand* undo; TableEntryElement* entry=m_cursor.currentElement()->parentTableEntry(); if (entry) { TableElement* table=static_cast<TableElement*>(entry->parentElement()->parentElement()); int rowNumber=table->childElements().indexOf(entry->parentElement()); int columnNumber=entry->parentElement()->childElements().indexOf(entry); if (rows) { //Changing rows if (insert) { undo=new FormulaCommandReplaceRow(formulaData(),cursor(),table,rowNumber,0,1); if (undo) { undo->setText(i18n("Insert row")); } } else { undo=new FormulaCommandReplaceRow(formulaData(),cursor(),table,rowNumber,1,0); if (undo) { undo->setText(i18n("Remove row")); } } } else { //Changing columns if (insert) { undo=new FormulaCommandReplaceColumn(formulaData(),cursor(),table,columnNumber,0,1); if (undo) { undo->setText(i18n("Insert column")); } } else { undo=new FormulaCommandReplaceColumn(formulaData(),cursor(),table,columnNumber,1,0); if (undo) { undo->setText(i18n("Remove column")); } } } } else { return 0; } return undo; } FormulaCommand* FormulaEditor::insertElement( BasicElement* element ) { FormulaCommand *undo = 0; if (m_cursor.insideInferredRow()) { RowElement* tmprow=static_cast<RowElement*>(m_cursor.currentElement()); QList<BasicElement*> list; list<<element; if (m_cursor.hasSelection()) { undo=new FormulaCommandReplaceElements(tmprow,m_cursor.selection().first,m_cursor.selection().second-m_cursor.selection().first,list,true); } else { undo=new FormulaCommandReplaceElements(tmprow,m_cursor.position(),0,list,false); } } else if (m_cursor.insideToken() && element->elementType()==Glyph) { //TODO: implement the insertion of glyphs } if (undo) { undo->setText(i18n("Insert formula elements.")); undo->setUndoCursorPosition(cursor()); } return undo; } FormulaCommand* FormulaEditor::remove( bool elementBeforePosition ) { FormulaCommand *undo=0; if (m_cursor.insideInferredRow()) { RowElement* tmprow=static_cast<RowElement*>(m_cursor.currentElement()); if (m_cursor.isSelecting()) { undo=new FormulaCommandReplaceElements(tmprow,m_cursor.selection().first,m_cursor.selection().second-m_cursor.selection().first,QList<BasicElement*>()); } else { if (elementBeforePosition && !m_cursor.isHome()) { undo=new FormulaCommandReplaceElements(tmprow,m_cursor.position()-1,1,QList<BasicElement*>()); } else if (!elementBeforePosition && !m_cursor.isEnd()) { undo=new FormulaCommandReplaceElements(tmprow,m_cursor.position(),1,QList<BasicElement*>()); } } } else if (m_cursor.insideToken()) { TokenElement* tmptoken=static_cast<TokenElement*>(m_cursor.currentElement()); if (m_cursor.hasSelection()) { undo=new FormulaCommandReplaceText(tmptoken,m_cursor.selection().first,m_cursor.selection().second-m_cursor.selection().first,""); } else { if (elementBeforePosition && !m_cursor.isHome()) { undo=new FormulaCommandReplaceText(tmptoken,m_cursor.position()-1,1,""); } else if (!elementBeforePosition && !m_cursor.isEnd()) { undo=new FormulaCommandReplaceText(tmptoken,m_cursor.position(),1,""); } } } if (undo) { undo->setText(i18n("Remove formula elements")); undo->setUndoCursorPosition(cursor()); } return undo; } void FormulaEditor::setData ( FormulaData* data ) { m_data=data; } FormulaData* FormulaEditor::formulaData() const { return m_data; } QString FormulaEditor::inputBuffer() const { return m_inputBuffer; } QString FormulaEditor::tokenType ( const QChar& character ) const { QChar::Category chat=character.category(); if (character.isNumber()) { return "mn"; } else if (chat==QChar::Punctuation_Connector || chat==QChar::Punctuation_Dash || chat==QChar::Punctuation_Open || chat==QChar::Punctuation_Close || chat==QChar::Punctuation_InitialQuote || chat==QChar::Punctuation_FinalQuote || chat==QChar::Symbol_Math) { return "mo"; } else if (character.isLetter()) { return "mi"; } return "mi"; } FormulaCursor& FormulaEditor::cursor() { return m_cursor; } void FormulaEditor::setCursor ( FormulaCursor& cursor ) { m_cursor=cursor; 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