/* This file is part of the KDE project Copyright (C) 2001 Andrea Rizzi Ulrich Kuettler Copyright (C) 2006 Alfredo Beaumont Sainz 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 SPACEELEMENT_H #define SPACEELEMENT_H #include #include #include "basicelement.h" class SymbolTable; KFORMULA_NAMESPACE_BEGIN /** * A element that represents a space. */ class SpaceElement : public BasicElement { enum LineBreakType { NoBreakType, AutoBreak, NewLineBreak, IndentingNewLineBreak, NoBreak, GoodBreak, BadBreak }; SpaceElement operator=( const SpaceElement& ) { return *this; } public: SpaceElement( SpaceWidth space = THIN, bool tab=false, BasicElement* parent = 0 ); SpaceElement( const SpaceElement& ); virtual SpaceElement* clone() { return new SpaceElement( *this ); } virtual bool accept( ElementVisitor* visitor ); /** * @returns the type of this element. Used for * parsing a sequence. */ //virtual TokenType getTokenType() const; /** * @returns the character that represents this element. Used for * parsing a sequence. */ virtual TQChar getCharacter() const { return ' '; } // drawing // // Drawing depends on a conspace which knows the required properties like // fonts, spaces and such. // It is essential to calculate elements size with the same conspace // before you draw. /** * Calculates our width and height and * our children's parentPosition. */ virtual void calcSizes( const ContextStyle& cstyle, 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( TQPainter& painter, const LuPixelRect& r, const ContextStyle& context, ContextStyle::TextStyle tstyle, ContextStyle::IndexStyle istyle, StyleAttributes& style, const LuPixelPoint& parentOrigin ); /** * Moves the cursor away from the given child. The cursor is * guaranteed to be inside this element. */ //virtual void childWillVanish(FormulaCursor*, BasicElement*) {} /** * @returns the latex representation of the element and * of the element's children */ virtual TQString toLatex(); protected: //Save/load support /** * @returns the tag name of this element type. */ virtual TQString getTagName() const { return "SPACE"; } /** * Appends our attributes to the dom element. */ virtual void writeDom(TQDomElement element); /** * Reads our attributes from the element. * Returns false if it failed. */ virtual bool readAttributesFromDom(TQDomElement 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(TQDomNode& node); /** * Reads our attributes from the MathML element. * Returns false if it failed. */ virtual bool readAttributesFromMathMLDom(const TQDomElement& element); private: virtual TQString getElementName() const { return "mspace"; } virtual void writeMathMLAttributes( TQDomElement& element ) const ; /** * Whether this space behaves like a tab. */ bool m_tab; // MathML Attributes, Section 3.2.7.2 SizeType m_widthType; double m_width; SizeType m_heightType; double m_height; SizeType m_depthType; double m_depth; LineBreakType m_lineBreak; }; KFORMULA_NAMESPACE_END #endif // SPACEELEMENT_H