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465 lines
14 KiB
465 lines
14 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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Copyright (C) 2006 Alfredo Beaumont Sainz <alfredo.beaumont@gmail.com>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef MATRIXELEMENT_H
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#define MATRIXELEMENT_H
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#include <tqptrlist.h>
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#include "basicelement.h"
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KFORMULA_NAMESPACE_BEGIN
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class MatrixSequenceElement;
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/**
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* A matrix.
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*/
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class MatrixElement : public BasicElement {
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friend class KFCRemoveColumn;
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friend class KFCRemoveRow;
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friend class MatrixSequenceElement;
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enum VerticalAlign { NoAlign, TopAlign, BottomAlign, CenterAlign, BaselineAlign, AxisAlign };
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enum LineType { NoLine, NoneLine, SolidLine, DashedLine };
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enum SideType { NoSide, LeftSide, RightSide, LeftOverlapSide, RightOverlapSide };
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MatrixElement& operator=( const MatrixElement& ) { return *this; }
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public:
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MatrixElement(uint rows = 1, uint columns = 1, BasicElement* parent = 0);
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~MatrixElement();
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MatrixElement( const MatrixElement& );
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virtual MatrixElement* clone() {
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return new MatrixElement( *this );
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}
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virtual bool accept( ElementVisitor* visitor );
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/**
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* The cursor has entered one of our child sequences.
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* This is a good point to tell the user where he is.
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*/
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virtual void entered( SequenceElement* child );
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/**
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* Sets the cursor and returns the element the point is in.
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* The handled flag shows whether the cursor has been set.
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* This is needed because only the innermost matching element
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* is allowed to set the cursor.
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*/
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virtual BasicElement* goToPos( FormulaCursor*, bool& handled,
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const LuPixelPoint& point, const LuPixelPoint& parentOrigin );
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// drawing
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//
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// Drawing depends on a context which knows the required properties like
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// fonts, spaces and such.
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// It is essential to calculate elements size with the same context
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// before you draw.
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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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virtual void calcSizes( const ContextStyle& cstyle,
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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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* 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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virtual void 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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* Dispatch this FontCommand to all our TextElement children.
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*/
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virtual void dispatchFontCommand( FontCommand* cmd );
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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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virtual void moveLeft(FormulaCursor* cursor, BasicElement* from);
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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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virtual void moveRight(FormulaCursor* cursor, BasicElement* from);
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/**
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* Enters this element while moving up starting inside
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* the element `from'. Searches for a cursor position inside
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* this element or above it.
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*/
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virtual void moveUp(FormulaCursor*, BasicElement*);
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/**
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* Enters this element while moving down starting inside
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* the element `from'. Searches for a cursor position inside
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* this element or below it.
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*/
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virtual void moveDown(FormulaCursor*, BasicElement*);
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/**
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* Sets the cursor inside this element to its start position.
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* For most elements that is the main child.
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*/
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virtual void goInside(FormulaCursor* cursor);
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/**
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* We define the Main Child of a matrix to be the first row/column.
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**/
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// If there is a main child we must provide the insert/remove semantics.
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virtual SequenceElement* getMainChild();
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/**
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* Inserts all new children at the cursor position. Places the
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* cursor according to the direction.
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*/
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//virtual void insert(FormulaCursor*, TQPtrList<BasicElement>&, Direction);
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/**
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* Removes all selected children and returns them. Places the
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* cursor to where the children have been.
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*/
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//virtual void remove(FormulaCursor*, TQPtrList<BasicElement>&, Direction);
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/**
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* Moves the cursor to a normal place where new elements
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* might be inserted.
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*/
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//virtual void normalize(FormulaCursor*, Direction);
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/**
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* Sets the cursor to select the child. The mark is placed before,
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* the position behind it.
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*/
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virtual void selectChild(FormulaCursor*, BasicElement*);
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/**
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* Moves the cursor away from the given child. The cursor is
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* guaranteed to be inside this element.
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*/
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//virtual void childWillVanish(FormulaCursor* cursor, BasicElement* child) = 0;
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/**
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* Returns wether the element has no more useful
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* children (except its main child) and should therefore
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* be replaced by its main child's content.
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*/
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//virtual bool isSenseless();
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/**
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* @returns the latex representation of the element and
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* of the element's children
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*/
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virtual TQString toLatex();
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virtual TQString formulaString();
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uint getRows() const { return content.count(); }
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uint getColumns() const { return content.getFirst()->count(); }
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SequenceElement* elementAt(uint row, uint column);
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protected:
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//Save/load support
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/**
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* Returns the tag name of this element type.
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*/
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virtual TQString getTagName() const { return "MATRIX"; }
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/**
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* Appends our attributes to the dom element.
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*/
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virtual void writeDom(TQDomElement element);
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virtual TQString getElementName() const { return "mtable"; }
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virtual void writeMathMLAttributes( TQDomElement& element ) const;
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virtual void writeMathMLContent( TQDomDocument& doc,
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TQDomElement& element,
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bool oasisFormat ) const;
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/**
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* Reads our attributes from the element.
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* Returns false if it failed.
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*/
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virtual bool readAttributesFromDom(TQDomElement element);
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/**
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* Reads our content from the node. Sets the node to the next node
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* that needs to be read.
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* Returns false if it failed.
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*/
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virtual bool readContentFromDom(TQDomNode& node);
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virtual bool readAttributesFromMathMLDom( const TQDomElement& element );
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/**
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* Reads our content from the MathML node. Sets the node to the next node
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* that needs to be read. It is sometimes needed to read more than one node
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* (e. g. for fence operators).
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* Returns the number of nodes processed or -1 if it failed.
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*/
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virtual int readContentFromMathMLDom(TQDomNode& node);
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private:
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void writeMathMLAttributes( TQDomElement& element );
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MatrixSequenceElement* getElement(uint row, uint column)
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{ return content.at(row)->at(column); }
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const MatrixSequenceElement* getElement( uint row, uint column ) const;
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/**
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* Searches through the matrix for the element. Sets the
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* row and column if found.
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* Returns true if the element was found. false otherwise.
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*/
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bool searchElement(BasicElement* element, uint& row, uint& column);
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/**
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* The elements we contain.
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*/
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TQPtrList< TQPtrList< MatrixSequenceElement > > content;
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/**
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* MathML Attributes. See Section 3.5.1.2
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*/
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int m_rowNumber;
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VerticalAlign m_align;
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TQValueList< VerticalAlign > m_rowAlign;
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TQValueList< HorizontalAlign > m_columnAlign;
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TQValueList< bool > m_alignmentScope;
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TQValueList< SizeType > m_columnWidthType;
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TQValueList< double > m_columnWidth;
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SizeType m_widthType;
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double m_width;
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TQValueList< SizeType > m_rowSpacingType;
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TQValueList< double > m_rowSpacing;
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TQValueList< SizeType > m_columnSpacingType;
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TQValueList< double > m_columnSpacing;
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TQValueList< LineType > m_rowLines;
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TQValueList< LineType > m_columnLines;
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LineType m_frame;
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SizeType m_frameHSpacingType;
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double m_frameHSpacing;
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SizeType m_frameVSpacingType;
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double m_frameVSpacing;
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SideType m_side;
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SizeType m_minLabelSpacingType;
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double m_minLabelSpacing;
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bool m_equalRows;
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bool m_customEqualRows;
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bool m_equalColumns;
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bool m_customEqualColumns;
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bool m_displayStyle;
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bool m_customDisplayStyle;
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};
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class MultilineSequenceElement;
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/**
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* Any number of lines.
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*/
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class MultilineElement : public BasicElement {
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friend class KFCNewLine;
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typedef BasicElement inherited;
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public:
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/**
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* The container this FormulaElement belongs to must not be 0,
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* except you really know what you are doing.
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*/
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MultilineElement( BasicElement* parent = 0 );
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~MultilineElement();
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MultilineElement( const MultilineElement& );
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virtual MultilineElement* clone() {
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return new MultilineElement( *this );
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}
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virtual bool accept( ElementVisitor* visitor );
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/**
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* The cursor has entered one of our child sequences.
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* This is a good point to tell the user where he is.
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*/
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virtual void entered( SequenceElement* child );
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/**
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* Returns the element the point is in.
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*/
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BasicElement* goToPos( FormulaCursor* cursor, bool& handled,
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const LuPixelPoint& point, const LuPixelPoint& parentOrigin );
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/**
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* Sets the cursor inside this element to its start position.
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* For most elements that is the main child.
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*/
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virtual void goInside(FormulaCursor* cursor);
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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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virtual void moveLeft( FormulaCursor* cursor, BasicElement* from );
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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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virtual void moveRight( FormulaCursor* cursor, BasicElement* from );
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/**
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* Enters this element while moving up starting inside
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* the element `from'. Searches for a cursor position inside
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* this element or above it.
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*/
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virtual void moveUp( FormulaCursor* cursor, BasicElement* from );
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/**
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* Enters this element while moving down starting inside
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* the element `from'. Searches for a cursor position inside
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* this element or below it.
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*/
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virtual void moveDown( FormulaCursor* cursor, BasicElement* from );
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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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virtual void calcSizes( const ContextStyle& cstyle,
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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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* 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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virtual void 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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* Dispatch this FontCommand to all our TextElement children.
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*/
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virtual void dispatchFontCommand( FontCommand* cmd );
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virtual void insert(FormulaCursor*, TQPtrList<BasicElement>&, Direction);
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virtual void remove(FormulaCursor*, TQPtrList<BasicElement>&, Direction);
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virtual void normalize(FormulaCursor*, Direction);
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virtual SequenceElement* getMainChild();
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/**
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* Sets the cursor to select the child. The mark is placed before,
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* the position behind it.
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*/
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virtual void selectChild(FormulaCursor* cursor, BasicElement* child);
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/**
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* @returns the latex representation of the element and
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* of the element's children
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*/
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virtual TQString toLatex();
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virtual TQString formulaString();
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virtual void writeMathML( TQDomDocument& doc, TQDomNode& parent, bool oasisFormat = false ) const ;
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protected:
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//Save/load support
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/**
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* Returns the tag name of this element type.
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*/
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virtual TQString getTagName() const { return "MULTILINE"; }
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/**
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* Appends our attributes to the dom element.
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*/
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virtual void writeDom(TQDomElement element);
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/**
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* Reads our attributes from the element.
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* Returns false if it failed.
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*/
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virtual bool readAttributesFromDom(TQDomElement element);
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/**
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* Reads our content from the node. Sets the node to the next node
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* that needs to be read.
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* Returns false if it failed.
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*/
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virtual bool readContentFromDom(TQDomNode& node);
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private:
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/**
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* The list of sequences. Each one is a line.
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*/
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TQPtrList< MultilineSequenceElement > content;
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};
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KFORMULA_NAMESPACE_END
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#endif // MATRIXELEMENT_H
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