2022-06-08 21:38:26 +08:00
|
|
|
/*
|
|
|
|
Copyright (c) 2008-2022 Jan W. Krieger (<jan@jkrieger.de>)
|
|
|
|
with contributions from: Razi Alavizadeh
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
This software is free software: you can redistribute it and/or modify
|
|
|
|
it under the terms of the GNU Lesser General Public License (LGPL) as published by
|
|
|
|
the Free Software Foundation, either version 2.1 of the License, or
|
|
|
|
(at your option) any later version.
|
|
|
|
|
|
|
|
This program 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 Lesser General Public License (LGPL) for more details.
|
|
|
|
|
|
|
|
You should have received a copy of the GNU Lesser General Public License (LGPL)
|
|
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#ifndef JKQTMATHTEXTFRACNODE_H
|
|
|
|
#define JKQTMATHTEXTFRACNODE_H
|
|
|
|
#include "jkqtmathtext/jkqtmathtext_imexport.h"
|
|
|
|
#include "jkqtmathtext/jkqtmathtexttools.h"
|
|
|
|
#include "jkqtmathtext/nodes/jkqtmathtextnode.h"
|
|
|
|
#include <QPainter>
|
|
|
|
|
|
|
|
class JKQTMathText; // forward
|
|
|
|
// JKQTMATHTEXT_LIB_EXPORT
|
|
|
|
|
|
|
|
|
|
|
|
/** \brief subclass representing a \\frac node
|
|
|
|
* \ingroup jkqtmathtext_items
|
2022-06-09 05:52:22 +08:00
|
|
|
*
|
|
|
|
* all fractions re drawn like this:
|
2022-06-09 20:42:25 +08:00
|
|
|
* \image html jkqtmathtext/jkqtmathtext_fracnode_geo.png
|
2022-06-09 05:52:22 +08:00
|
|
|
*
|
|
|
|
* slanted fractions are drawn like this:
|
2022-06-09 20:42:25 +08:00
|
|
|
* \image html jkqtmathtext/jkqtmathtext_sfracnode_geo.png
|
2022-06-09 05:52:22 +08:00
|
|
|
*/
|
|
|
|
class JKQTMATHTEXT_LIB_EXPORT JKQTMathTextFracNode: public JKQTMathTextDualChildNode {
|
2022-06-08 21:38:26 +08:00
|
|
|
public:
|
2022-06-10 02:32:16 +08:00
|
|
|
|
|
|
|
/** \brief type of ffractions represented by JKQTMathTextFracNode
|
|
|
|
* \see JKQTMathTextFracNode, JKQTMathTextFracNode::FracType2String()
|
|
|
|
*/
|
|
|
|
enum FracType {
|
|
|
|
MTFMfrac, /*!< \brief normal fraction \image html jkqtmathtext/MTFMfrac.png */
|
|
|
|
MTFMdfrac, /*!< \brief normal fraction, without scaling of under/over text \image html jkqtmathtext/MTFMdfrac.png */
|
|
|
|
MTFMtfrac, /*!< \brief text fraction (smaller than MTFMfrac) \image html jkqtmathtext/MTFMtfrac.png */
|
|
|
|
MTFMsfrac, /*!< \brief slanted fraction \image html jkqtmathtext/MTFMsfrac.png */
|
|
|
|
MTFMstfrac, /*!< \brief slanted text fraction \image html jkqtmathtext/MTFMstfrac.png */
|
|
|
|
MTFMunderbrace, /*!< \brief curly underbrace \image html jkqtmathtext/MTFMunderbrace.png */
|
|
|
|
MTFMoverbrace, /*!< \brief curly overbrace \image html jkqtmathtext/MTFMoverbrace.png */
|
|
|
|
MTFMstackrel, /*!< \brief binom/fraction without line \image html jkqtmathtext/MTFMstackrel.png */
|
|
|
|
MTFMunderset, /*!< \brief underset text \image html jkqtmathtext/MTFMunderset.png */
|
|
|
|
MTFMoverset /*!< \brief overset text \image html jkqtmathtext/MTFMoverset.png */
|
|
|
|
};
|
|
|
|
|
|
|
|
/** \brief convert a JKQTMathTextFracNode::FracType into a QString
|
|
|
|
* \see JKQTMathTextFracNode::FracType
|
|
|
|
*/
|
|
|
|
static QString FracType2String(FracType mode);
|
|
|
|
|
|
|
|
|
|
|
|
JKQTMathTextFracNode(JKQTMathText* parent, JKQTMathTextNode* child_top, JKQTMathTextNode* child_bottom, JKQTMathTextFracNode::FracType mode);
|
2022-06-08 21:38:26 +08:00
|
|
|
virtual ~JKQTMathTextFracNode() override;
|
|
|
|
/** \copydoc JKQTMathTextNode::getTypeName() */
|
|
|
|
virtual QString getTypeName() const override;
|
|
|
|
/** \copydoc JKQTMathTextNode::draw() */
|
|
|
|
virtual double draw(QPainter& painter, double x, double y, JKQTMathTextEnvironment currentEv, const JKQTMathTextNodeSize* prevNodeSize=nullptr) override;
|
|
|
|
/** \copydoc JKQTMathTextNode::toHtml() */
|
|
|
|
virtual bool toHtml(QString& html, JKQTMathTextEnvironment currentEv, JKQTMathTextEnvironment defaultEv) override;
|
|
|
|
/** \copydoc mode */
|
2022-06-10 02:32:16 +08:00
|
|
|
JKQTMathTextFracNode::FracType getMode() const;
|
2022-06-08 21:38:26 +08:00
|
|
|
protected:
|
|
|
|
/** \copydoc JKQTMathTextNode::getSizeInternal() */
|
|
|
|
virtual void getSizeInternal(QPainter& painter, JKQTMathTextEnvironment currentEv, double& width, double& baselineHeight, double& overallHeight, double& strikeoutPos, const JKQTMathTextNodeSize* prevNodeSize=nullptr) override;
|
2022-06-09 05:52:22 +08:00
|
|
|
/** \brief actual display type of fraction object */
|
2022-06-10 02:32:16 +08:00
|
|
|
JKQTMathTextFracNode::FracType mode;
|
2022-06-09 05:52:22 +08:00
|
|
|
/** \brief returns the nesting level of the node (of same type of \a sameType \c ==true) */
|
|
|
|
int getNestingLevel(bool sameType=false) const;
|
|
|
|
/** \brief determines the scaling factor of the fraction (takes into account the nesting level) */
|
|
|
|
double getFracScalingFactor() const;
|
2022-06-08 21:38:26 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
#endif // JKQTMATHTEXTFRACNODE_H
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|