Added old abandoned KDE3 version of koffice

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/koffice@1077364 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 436 insertions, 0 deletions

diff --git a/lib/kformula/bracketelement.h b/lib/kformula/bracketelement.h
new file mode 100644
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+++ b/lib/kformula/bracketelement.h
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+/* 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 <qpoint.h>
+#include <qsize.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* parent = 0);
+    ~SingleContentElement();
+
+    SingleContentElement( const SingleContentElement& );
+
+    /**
+     * @returns the character that represents this element. Used for
+     * parsing a sequence.
+     * This is guaranteed to be QChar::null for all non-text elements.
+     */
+    virtual QChar 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 children.
+     */
+    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 children and returns them. Places the
+     * cursor to where the children have been.
+     *
+     * We remove ourselve if we are requested to remove our content.
+     */
+    virtual void remove(FormulaCursor*, QPtrList<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 children 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(QDomElement element);
+
+    virtual void writeMathMLContent( QDomDocument& doc, 
+                                     QDomElement& 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(QDomNode& 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(QDomNode& 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* parent = 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 children's parentPosition.
+     */
+    virtual void calcSizes( const ContextStyle& context,
+							ContextStyle::TextStyle tstyle,
+							ContextStyle::IndexStyle istyle,
+							StyleAttributes& style );
+
+    /**
+     * Draws the whole element including its children.
+     * The `parentOrigin' is the point this element's parent starts.
+     * We can use our parentPosition to get our own origin then.
+     */
+    virtual void draw( QPainter& 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 QString getTagName() const { return "BRACKET"; }
+
+    /**
+     * Reads our attributes from the element.
+     * Returns false if it failed.
+     */
+    virtual bool readAttributesFromDom(QDomElement element);
+
+    virtual void writeDom(QDomElement element);
+
+    virtual QString getElementName() const { return "mfenced"; }
+    virtual void writeMathMLAttributes( QDomElement& element ) const;
+    /**
+     * Reads our attributes from the MathML element.
+     * Returns false if it failed.
+     */
+	virtual bool readAttributesFromMathMLDom(const QDomElement& 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(QDomNode& node);
+
+    /**
+     * @returns the latex representation of the element and
+     * of the element's children
+     */
+    virtual QString toLatex();
+
+    virtual QString formulaString();
+
+private:
+
+    /**
+     * @return a LaTex string for the given symbol
+     */
+    QString 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( QDomNode& node, bool open );
+
+    /**
+     * Search through the nodes to find the close operator to match current
+     * open bracket.
+     */
+    int searchOperator( const QDomNode& node );
+
+    /**
+     * The brackets we are showing.
+     */
+    Artwork* left;
+    Artwork* right;
+
+    SymbolType leftType;
+    SymbolType rightType;
+
+    QString 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* parent = 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 children's parentPosition.
+     */
+    virtual void calcSizes( const ContextStyle& context,
+						    ContextStyle::TextStyle tstyle,
+						    ContextStyle::IndexStyle istyle,
+							StyleAttributes& style );
+
+    /**
+     * Draws the whole element including its children.
+     * The `parentOrigin' is the point this element's parent starts.
+     * We can use our parentPosition to get our own origin then.
+     */
+    virtual void draw( QPainter& 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 children
+     */
+    virtual QString toLatex();
+
+    virtual QString formulaString();
+
+    virtual void writeMathML( QDomDocument& doc, QDomNode& parent, bool oasisFormat = false ) const;
+
+protected:
+
+    //Save/load support
+
+    /**
+     * Returns the tag name of this element type.
+     */
+    virtual QString getTagName() const { return "OVERLINE"; }
+
+private:
+};
+
+
+/**
+ * A line below the content.
+ */
+class UnderlineElement : public SingleContentElement {
+    UnderlineElement& operator=( const UnderlineElement& ) { return *this; }
+public:
+    UnderlineElement(BasicElement* parent = 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 children's parentPosition.
+     */
+    virtual void calcSizes( const ContextStyle& context,
+						    ContextStyle::TextStyle tstyle,
+						    ContextStyle::IndexStyle istyle,
+							StyleAttributes& style );
+
+    /**
+     * Draws the whole element including its children.
+     * The `parentOrigin' is the point this element's parent starts.
+     * We can use our parentPosition to get our own origin then.
+     */
+    virtual void draw( QPainter& 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 children
+     */
+    virtual QString toLatex();
+
+    virtual QString formulaString();
+
+    virtual void writeMathML( QDomDocument& doc, QDomNode& parent, bool oasisFormat = false ) const;
+
+protected:
+
+    //Save/load support
+
+    /**
+     * Returns the tag name of this element type.
+     */
+    virtual QString getTagName() const { return "UNDERLINE"; }
+
+private:
+};
+
+
+KFORMULA_NAMESPACE_END
+
+#endif // BRACKETELEMENT_H