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, 234 insertions, 0 deletions

diff --git a/lib/kformula/formulaelement.h b/lib/kformula/formulaelement.h
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+++ b/lib/kformula/formulaelement.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 FORMULAELEMENT_H
+#define FORMULAELEMENT_H
+
+// Formula include
+#include "sequenceelement.h"
+
+KFORMULA_NAMESPACE_BEGIN
+
+class BasicElement;
+class ContextStyle;
+class FormulaDocument;
+class SymbolTable;
+
+
+/**
+ * The main element.
+ * A formula consists of a FormulaElement and its children.
+ * The only element that has no parent.
+ */
+class FormulaElement : public SequenceElement {
+    typedef SequenceElement inherited;
+public:
+
+    /**
+     * The container this FormulaElement belongs to must not be 0,
+     * except you really know what you are doing.
+     */
+    FormulaElement(FormulaDocument* container);
+
+    virtual FormulaElement* clone() { return 0; }
+
+    /**
+     * Returns the element the point is in.
+     */
+    BasicElement* goToPos( FormulaCursor*, const LuPixelPoint& point );
+
+    /**
+     * Ordinary formulas are not write protected.
+     */
+    virtual bool readOnly( const BasicElement* /*child*/ ) const { return false; }
+
+    /**
+     * @returns whether its prohibited to change the sequence with this cursor.
+     */
+    virtual bool readOnly( const FormulaCursor* ) const { return false; }
+
+    /**
+     * Provide fast access to the rootElement for each child.
+     */
+    virtual FormulaElement* formula() { return this; }
+
+    /**
+     * Provide fast access to the rootElement for each child.
+     */
+    virtual const FormulaElement* formula() const { return this; }
+
+    /**
+     * Gets called just before the child is removed from
+     * the element tree.
+     */
+    void elementRemoval(BasicElement* child);
+
+    /**
+     * Gets called whenever something changes and we need to
+     * recalc.
+     */
+    virtual void changed();
+
+    /**
+     * Gets called when a request has the side effect of moving the
+     * cursor. In the end any operation that moves the cursor should
+     * call this.
+     */
+    void cursorHasMoved( FormulaCursor* );
+
+    void moveOutLeft( FormulaCursor* );
+    void moveOutRight( FormulaCursor* );
+    void moveOutBelow( FormulaCursor* );
+    void moveOutAbove( FormulaCursor* );
+
+    /**
+     * Tell the user something has happened.
+     */
+    void tell( const QString& msg );
+
+    /**
+     * Gets called when the formula wants to vanish. The one who
+     * holds it should create an appropriate command and execute it.
+     */
+    void removeFormula( FormulaCursor* );
+
+    void insertFormula( FormulaCursor* );
+
+    /**
+     * 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 );
+
+    /**
+     * Calculates the formulas sizes and positions.
+     */
+    void calcSizes( ContextStyle& context );
+
+    /**
+     * Draws the whole thing.
+     */
+    void draw( QPainter& painter, const LuPixelRect& r, ContextStyle& context );
+
+    /**
+     * This is called by the container to get a command depending on
+     * the current cursor position (this is how the element gets chosen)
+     * and the request.
+     *
+     * @returns the command that performs the requested action with
+     * the containers active cursor.
+     */
+    virtual KCommand* buildCommand( Container*, Request* );
+
+    /**
+     * @returns our documents symbol table
+     */
+    const SymbolTable& getSymbolTable() const;
+
+    /**
+     * @returns the latex representation of the element and
+     * of the element's children
+     */
+    virtual QString toLatex();
+
+    int getBaseSize() const { return baseSize; }
+    void setBaseSize( int size );
+
+    bool hasOwnBaseSize() const { return ownBaseSize; }
+
+    virtual KCommand* input( Container* container, QKeyEvent* event );
+
+    virtual void writeMathML( QDomDocument& doc, QDomNode& parent, bool oasisFormat = false ) const ;
+
+    /**
+     * Appends our attributes to the dom element.
+     */
+    virtual void writeDom(QDomElement element);
+
+    /**
+     * For copy&paste we need to create an empty XML element.
+     */
+    QDomElement emptyFormulaElement( QDomDocument& doc );
+
+protected:
+
+    //Save/load support
+
+    /**
+     * Returns the tag name of this element type.
+     */
+    virtual QString getTagName() const { return "FORMULA"; }
+
+    /**
+     * Reads our attributes from the element.
+     * Returns false if it failed.
+     */
+    virtual bool readAttributesFromDom(QDomElement element);
+
+    /**
+     * 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);
+
+
+private:
+
+    /**
+     * The introduction of 'NameSequence' changed the DOM.
+     * However, we need to read the old version.
+     */
+    void convertNames( QDomNode node );
+
+    /**
+     * The document that owns (is) this formula.
+     */
+    FormulaDocument* document;
+
+    /**
+     * The base font size.
+     */
+    int baseSize;
+
+    /**
+     * Whether we want to use the default base size.
+     */
+    bool ownBaseSize;
+};
+
+KFORMULA_NAMESPACE_END
+
+#endif // FORMULAELEMENT_H