You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
437 lines
13 KiB
437 lines
13 KiB
/* This file is part of the KDE project
|
|
Copyright (C) 2001 Andrea Rizzi <rizzi@kde.org>
|
|
Ulrich Kuettler <ulrich.kuettler@mailbox.tu-dresden.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.
|
|
*/
|
|
|
|
#ifndef BRACKETELEMENT_H
|
|
#define BRACKETELEMENT_H
|
|
|
|
#include <tqpoint.h>
|
|
#include <tqsize.h>
|
|
|
|
#include "basicelement.h"
|
|
|
|
KFORMULA_NAMESPACE_BEGIN
|
|
|
|
class Artwork;
|
|
class SequenceElement;
|
|
|
|
|
|
/**
|
|
* The base of (all) elements that contain just one content element.
|
|
* (No indexes.)
|
|
*/
|
|
class SingleContentElement : public BasicElement {
|
|
SingleContentElement& operator=( const SingleContentElement& ) { return *this; }
|
|
public:
|
|
|
|
SingleContentElement(BasicElement* tqparent = 0);
|
|
~SingleContentElement();
|
|
|
|
SingleContentElement( const SingleContentElement& );
|
|
|
|
/**
|
|
* @returns the character that represents this element. Used for
|
|
* parsing a sequence.
|
|
* This is guaranteed to be TQChar::null for all non-text elements.
|
|
*/
|
|
virtual TQChar getCharacter() const;
|
|
|
|
/**
|
|
* Sets the cursor and returns the element the point is in.
|
|
* The handled flag shows whether the cursor has been set.
|
|
* This is needed because only the innermost matching element
|
|
* is allowed to set the cursor.
|
|
*/
|
|
virtual BasicElement* goToPos( FormulaCursor*, bool& handled,
|
|
const LuPixelPoint& point, const LuPixelPoint& parentOrigin );
|
|
|
|
/**
|
|
* Dispatch this FontCommand to all our TextElement tqchildren.
|
|
*/
|
|
virtual void dispatchFontCommand( FontCommand* cmd );
|
|
|
|
/**
|
|
* Enters this element while moving to the left starting inside
|
|
* the element `from'. Searches for a cursor position inside
|
|
* this element or to the left of it.
|
|
*/
|
|
virtual void moveLeft(FormulaCursor* cursor, BasicElement* from);
|
|
|
|
/**
|
|
* Enters this element while moving to the right starting inside
|
|
* the element `from'. Searches for a cursor position inside
|
|
* this element or to the right of it.
|
|
*/
|
|
virtual void moveRight(FormulaCursor* cursor, BasicElement* from);
|
|
|
|
/**
|
|
* Enters this element while moving up starting inside
|
|
* the element `from'. Searches for a cursor position inside
|
|
* this element or above it.
|
|
*/
|
|
virtual void moveUp(FormulaCursor* cursor, BasicElement* from);
|
|
|
|
/**
|
|
* Enters this element while moving down starting inside
|
|
* the element `from'. Searches for a cursor position inside
|
|
* this element or below it.
|
|
*/
|
|
virtual void moveDown(FormulaCursor* cursor, BasicElement* from);
|
|
|
|
/**
|
|
* Removes all selected tqchildren and returns them. Places the
|
|
* cursor to where the tqchildren have been.
|
|
*
|
|
* We remove ourselve if we are requested to remove our content.
|
|
*/
|
|
virtual void remove(FormulaCursor*, TQPtrList<BasicElement>&, Direction);
|
|
|
|
/**
|
|
* Moves the cursor to a normal place where new elements
|
|
* might be inserted.
|
|
*/
|
|
virtual void normalize(FormulaCursor*, Direction);
|
|
|
|
// main child
|
|
//
|
|
// If an element has tqchildren one has to become the main one.
|
|
|
|
virtual SequenceElement* getMainChild();
|
|
|
|
/**
|
|
* Sets the cursor to select the child. The mark is placed before,
|
|
* the position behind it.
|
|
*/
|
|
virtual void selectChild(FormulaCursor* cursor, BasicElement* child);
|
|
|
|
protected:
|
|
|
|
/**
|
|
* Appends our attributes to the dom element.
|
|
*/
|
|
virtual void writeDom(TQDomElement element);
|
|
|
|
virtual void writeMathMLContent( TQDomDocument& doc,
|
|
TQDomElement& element,
|
|
bool oasisFormat ) const;
|
|
/**
|
|
* Reads our content from the node. Sets the node to the next node
|
|
* that needs to be read.
|
|
* Returns false if it failed.
|
|
*/
|
|
virtual bool readContentFromDom(TQDomNode& node);
|
|
|
|
/**
|
|
* Reads our content from the MathML node. Sets the node to the next node
|
|
* that needs to be read.
|
|
* Returns false if it failed.
|
|
*/
|
|
virtual int readContentFromMathMLDom(TQDomNode& node);
|
|
|
|
SequenceElement* getContent() { return content; }
|
|
|
|
private:
|
|
|
|
/**
|
|
* The one below the graph.
|
|
*/
|
|
SequenceElement* content;
|
|
};
|
|
|
|
|
|
/**
|
|
* A left and/or right bracket around one child.
|
|
*/
|
|
class BracketElement : public SingleContentElement {
|
|
typedef SingleContentElement inherited;
|
|
BracketElement& operator=( const BracketElement& ) { return *this; }
|
|
public:
|
|
|
|
enum { contentPos };
|
|
|
|
BracketElement(SymbolType left = EmptyBracket, SymbolType right = EmptyBracket,
|
|
BasicElement* tqparent = 0);
|
|
~BracketElement();
|
|
|
|
BracketElement( const BracketElement& );
|
|
|
|
virtual BracketElement* clone() {
|
|
return new BracketElement( *this );
|
|
}
|
|
|
|
virtual bool accept( ElementVisitor* visitor );
|
|
|
|
/**
|
|
* @returns the type of this element. Used for
|
|
* parsing a sequence.
|
|
*/
|
|
virtual TokenType getTokenType() const { return BRACKET; }
|
|
|
|
/**
|
|
* The cursor has entered one of our child sequences.
|
|
* This is a good point to tell the user where he is.
|
|
*/
|
|
virtual void entered( SequenceElement* child );
|
|
|
|
/**
|
|
* Sets the cursor and returns the element the point is in.
|
|
* The handled flag shows whether the cursor has been set.
|
|
* This is needed because only the innermost matching element
|
|
* is allowed to set the cursor.
|
|
*/
|
|
virtual BasicElement* goToPos( FormulaCursor*, bool& handled,
|
|
const LuPixelPoint& point, const LuPixelPoint& parentOrigin );
|
|
|
|
/**
|
|
* Calculates our width and height and
|
|
* our tqchildren's parentPosition.
|
|
*/
|
|
virtual void calcSizes( const ContextStyle& context,
|
|
ContextStyle::TextStyle tstyle,
|
|
ContextStyle::IndexStyle istyle,
|
|
StyleAttributes& style );
|
|
|
|
/**
|
|
* Draws the whole element including its tqchildren.
|
|
* The `parentOrigin' is the point this element's tqparent starts.
|
|
* We can use our parentPosition to get our own origin then.
|
|
*/
|
|
virtual void draw( TQPainter& painter, const LuPixelRect& r,
|
|
const ContextStyle& context,
|
|
ContextStyle::TextStyle tstyle,
|
|
ContextStyle::IndexStyle istyle,
|
|
StyleAttributes& style,
|
|
const LuPixelPoint& parentOrigin );
|
|
|
|
protected:
|
|
|
|
//Save/load support
|
|
|
|
/**
|
|
* Returns the tag name of this element type.
|
|
*/
|
|
virtual TQString getTagName() const { return "BRACKET"; }
|
|
|
|
/**
|
|
* Reads our attributes from the element.
|
|
* Returns false if it failed.
|
|
*/
|
|
virtual bool readAttributesFromDom(TQDomElement element);
|
|
|
|
virtual void writeDom(TQDomElement element);
|
|
|
|
virtual TQString getElementName() const { return "mfenced"; }
|
|
virtual void writeMathMLAttributes( TQDomElement& element ) const;
|
|
/**
|
|
* Reads our attributes from the MathML element.
|
|
* Returns false if it failed.
|
|
*/
|
|
virtual bool readAttributesFromMathMLDom(const TQDomElement& element);
|
|
|
|
/**
|
|
* Reads our content from the MathML node. Sets the node to the next node
|
|
* that needs to be read. It is sometimes needed to read more than one node
|
|
* (e. g. for fence operators).
|
|
* Returns the number of nodes processed or -1 if it failed.
|
|
*/
|
|
virtual int readContentFromMathMLDom(TQDomNode& node);
|
|
|
|
/**
|
|
* @returns the latex representation of the element and
|
|
* of the element's tqchildren
|
|
*/
|
|
virtual TQString toLatex();
|
|
|
|
virtual TQString formulaString();
|
|
|
|
private:
|
|
|
|
/**
|
|
* @return a LaTex string for the given symbol
|
|
*/
|
|
TQString latexString(char);
|
|
|
|
/**
|
|
* Set left and right types in operator fences
|
|
* @param open if true set SymbolType for open (left) bracket,
|
|
* otherwise set for close (right) bracket.
|
|
*/
|
|
int operatorType( TQDomNode& node, bool open );
|
|
|
|
/**
|
|
* Search through the nodes to find the close operator to match current
|
|
* open bracket.
|
|
*/
|
|
int searchOperator( const TQDomNode& node );
|
|
|
|
/**
|
|
* The brackets we are showing.
|
|
*/
|
|
Artwork* left;
|
|
Artwork* right;
|
|
|
|
SymbolType leftType;
|
|
SymbolType rightType;
|
|
|
|
TQString m_separators;
|
|
bool m_operator;
|
|
bool m_customLeft;
|
|
bool m_customRight;
|
|
};
|
|
|
|
|
|
/**
|
|
* A line above the content.
|
|
*/
|
|
class OverlineElement : public SingleContentElement {
|
|
OverlineElement& operator=( const OverlineElement& ) { return *this; }
|
|
public:
|
|
|
|
OverlineElement(BasicElement* tqparent = 0);
|
|
~OverlineElement();
|
|
|
|
OverlineElement( const OverlineElement& );
|
|
|
|
virtual OverlineElement* clone() {
|
|
return new OverlineElement( *this );
|
|
}
|
|
|
|
virtual bool accept( ElementVisitor* visitor );
|
|
|
|
/**
|
|
* The cursor has entered one of our child sequences.
|
|
* This is a good point to tell the user where he is.
|
|
*/
|
|
virtual void entered( SequenceElement* child );
|
|
|
|
/**
|
|
* Calculates our width and height and
|
|
* our tqchildren's parentPosition.
|
|
*/
|
|
virtual void calcSizes( const ContextStyle& context,
|
|
ContextStyle::TextStyle tstyle,
|
|
ContextStyle::IndexStyle istyle,
|
|
StyleAttributes& style );
|
|
|
|
/**
|
|
* Draws the whole element including its tqchildren.
|
|
* The `parentOrigin' is the point this element's tqparent starts.
|
|
* We can use our parentPosition to get our own origin then.
|
|
*/
|
|
virtual void draw( TQPainter& painter, const LuPixelRect& r,
|
|
const ContextStyle& context,
|
|
ContextStyle::TextStyle tstyle,
|
|
ContextStyle::IndexStyle istyle,
|
|
StyleAttributes& style,
|
|
const LuPixelPoint& parentOrigin );
|
|
|
|
/**
|
|
* @returns the latex representation of the element and
|
|
* of the element's tqchildren
|
|
*/
|
|
virtual TQString toLatex();
|
|
|
|
virtual TQString formulaString();
|
|
|
|
virtual void writeMathML( TQDomDocument& doc, TQDomNode& tqparent, bool oasisFormat = false ) const;
|
|
|
|
protected:
|
|
|
|
//Save/load support
|
|
|
|
/**
|
|
* Returns the tag name of this element type.
|
|
*/
|
|
virtual TQString getTagName() const { return "OVERLINE"; }
|
|
|
|
private:
|
|
};
|
|
|
|
|
|
/**
|
|
* A line below the content.
|
|
*/
|
|
class UnderlineElement : public SingleContentElement {
|
|
UnderlineElement& operator=( const UnderlineElement& ) { return *this; }
|
|
public:
|
|
UnderlineElement(BasicElement* tqparent = 0);
|
|
~UnderlineElement();
|
|
|
|
UnderlineElement( const UnderlineElement& );
|
|
|
|
virtual UnderlineElement* clone() {
|
|
return new UnderlineElement( *this );
|
|
}
|
|
|
|
virtual bool accept( ElementVisitor* visitor );
|
|
|
|
/**
|
|
* The cursor has entered one of our child sequences.
|
|
* This is a good point to tell the user where he is.
|
|
*/
|
|
virtual void entered( SequenceElement* child );
|
|
|
|
/**
|
|
* Calculates our width and height and
|
|
* our tqchildren's parentPosition.
|
|
*/
|
|
virtual void calcSizes( const ContextStyle& context,
|
|
ContextStyle::TextStyle tstyle,
|
|
ContextStyle::IndexStyle istyle,
|
|
StyleAttributes& style );
|
|
|
|
/**
|
|
* Draws the whole element including its tqchildren.
|
|
* The `parentOrigin' is the point this element's tqparent starts.
|
|
* We can use our parentPosition to get our own origin then.
|
|
*/
|
|
virtual void draw( TQPainter& painter, const LuPixelRect& r,
|
|
const ContextStyle& context,
|
|
ContextStyle::TextStyle tstyle,
|
|
ContextStyle::IndexStyle istyle,
|
|
StyleAttributes& style,
|
|
const LuPixelPoint& parentOrigin );
|
|
|
|
/**
|
|
* @returns the latex representation of the element and
|
|
* of the element's tqchildren
|
|
*/
|
|
virtual TQString toLatex();
|
|
|
|
virtual TQString formulaString();
|
|
|
|
virtual void writeMathML( TQDomDocument& doc, TQDomNode& tqparent, bool oasisFormat = false ) const;
|
|
|
|
protected:
|
|
|
|
//Save/load support
|
|
|
|
/**
|
|
* Returns the tag name of this element type.
|
|
*/
|
|
virtual TQString getTagName() const { return "UNDERLINE"; }
|
|
|
|
private:
|
|
};
|
|
|
|
|
|
KFORMULA_NAMESPACE_END
|
|
|
|
#endif // BRACKETELEMENT_H
|