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/* This file is part of the KDE project
Copyright (C) 2007 Martin Pfeiffer <hubipete@gmx.net>
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 SQUAREROOTELEMENT_H
#define SQUAREROOTELEMENT_H
#include "RowElement.h"
#include "koformula_export.h"
#include <QPainterPath>
/**
* @short Implementation of the MathML msqrt element
*
* The msqrt element is not implemented along with mroot element in a single class
* as it is an inferred row element. That means that it takes any number of child
* elements whereas mroot only accepts exactly 2 child elements. From a painting
* and layouting perspective both are very similar except for the lack of a exponent
* in square root.
*/
class KOFORMULA_EXPORT SquareRootElement : public RowElement {
public:
/// The standard constructor
explicit SquareRootElement(BasicElement *parent = 0);
/// The standard destructor
~SquareRootElement() override;
/**
* Render the element to the given QPainter
* @param painter The QPainter to paint the element to
* @param am The AttributeManager providing information about attributes values
*/
void paint( QPainter& painter, AttributeManager* am ) override;
/**
* Calculate the size of the element and the positions of its children
* @param am The AttributeManager providing information about attributes values
*/
void layout( const AttributeManager* am ) override;
/// @return The element's ElementType
ElementType elementType() const override;
private:
/// The point the artwork relates to.
QPointF m_rootOffset;
/// The QPainterPath that holds the lines for the root sign
QPainterPath m_rootSymbol;
/// Line thickness, in pixels
qreal m_lineThickness;
};
#endif // SQUAREROOTELEMENT_H
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