mirror of
https://github.com/jkriege2/JKQtPlotter.git
synced 2024-12-25 01:51:49 +08:00
6fa5dd65ed
JKQTMathText: JKQTMathTextBraceNode now properly supports different opening and closing braces e.g. |...> for bra-vetors
117 lines
5.0 KiB
C++
117 lines
5.0 KiB
C++
/*
|
|
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 JKQTMATHTEXTBRACENODE_H
|
|
#define JKQTMATHTEXTBRACENODE_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 brace node
|
|
* \ingroup jkqtmathtext_items
|
|
*
|
|
* \image html jkqtmathtext/jkqtmathtext_bracenode_geo.png
|
|
*
|
|
* This node supports the brace-types encoded by JKQTMathTextBraceType:
|
|
* \copydetails JKQTMathTextBraceType
|
|
*
|
|
* In addition it is possible to switch the opening and the closing braces independently on and off.
|
|
*/
|
|
class JKQTMATHTEXT_LIB_EXPORT JKQTMathTextBraceNode: public JKQTMathTextSingleChildNode {
|
|
public:
|
|
|
|
JKQTMathTextBraceNode(JKQTMathText* parent, JKQTMathTextBraceType openbrace, JKQTMathTextBraceType closebrace, JKQTMathTextNode* child);
|
|
virtual ~JKQTMathTextBraceNode() override;
|
|
/** \copydoc JKQTMathTextNode::draw() */
|
|
virtual double draw(QPainter& painter, double x, double y, JKQTMathTextEnvironment currentEv) const override;
|
|
/** \copydoc JKQTMathTextNode::toHtml() */
|
|
virtual bool toHtml(QString& html, JKQTMathTextEnvironment currentEv, JKQTMathTextEnvironment defaultEv) const override;
|
|
/** \copydoc JKQTMathTextNode::getTypeName() */
|
|
virtual QString getTypeName() const override;
|
|
/** \copydoc openbrace */
|
|
JKQTMathTextBraceType getOpenbrace() const;
|
|
/** \copydoc closebrace */
|
|
JKQTMathTextBraceType getClosebrace() const;
|
|
protected:
|
|
/** \brief defines the size of the node (JKQTMathTextNodeSize) and additional information */
|
|
struct NodeSize: public JKQTMathTextNodeSize {
|
|
NodeSize();
|
|
NodeSize(const NodeSize& other);
|
|
NodeSize(const JKQTMathTextNodeSize& other);
|
|
NodeSize& operator=(const NodeSize& other);
|
|
NodeSize& operator=(const JKQTMathTextNodeSize& other);
|
|
/** \brief width of the opening brace */
|
|
double openBraceWidth;
|
|
/** \brief height of the opening brace */
|
|
double openBraceHeight;
|
|
/** \brief width of the closing brace */
|
|
double closeBraceWidth;
|
|
/** \brief height of the closing brace */
|
|
double closeBraceHeight;
|
|
};
|
|
/** \copydoc JKQTMathTextNode::getSizeInternal()
|
|
*
|
|
* \note This function internally calls getSizeInternalAndBrace() and returns part of its results.
|
|
*/
|
|
virtual JKQTMathTextNodeSize getSizeInternal(QPainter& painter, JKQTMathTextEnvironment currentEv) const override;
|
|
/** calculates the size of this node (also returned by getSizeInternal() ) and of the brace */
|
|
NodeSize getSizeInternalAndBrace(QPainter& painter, JKQTMathTextEnvironment currentEv) const;
|
|
/**\brief opening brace */
|
|
JKQTMathTextBraceType openbrace;
|
|
/**\brief closing brace */
|
|
JKQTMathTextBraceType closebrace;
|
|
/** \brief calculate the width of the braces, fills NodeSize::openbracewidth/NodeSize::closebracewidth and NodeSize::braceheight/NodeSize::closeheight in \a out, based on \a childSize
|
|
*
|
|
* \param[out] out this function fills NodeSize::openbracewidth/NodeSize::closebracewidth and NodeSize::braceheight/NodeSize::closeheight in \a out
|
|
* \param painter a QPainter used for size-calculation/drawing
|
|
* \param currentEv font environment
|
|
* \param childSize size of the child node surrounded by the node
|
|
*/
|
|
void calcBraceSizes(NodeSize& out, QPainter& painter, const JKQTMathTextEnvironment& currentEv, const JKQTMathTextNodeSize &childSize) const;
|
|
/** \brief calculate the width and height of a brace, based on \a childSize
|
|
*
|
|
* \param fm QFontMetricsF object describing the font of the current environment
|
|
* \param bracetype brace type
|
|
* \param childSize size of the child node surrounded by the node
|
|
*
|
|
* \return width and hieght of the brace
|
|
*/
|
|
QSizeF calcBraceSize(const QFontMetricsF& fm, JKQTMathTextBraceType bracetype, const JKQTMathTextNodeSize &childSize) const;
|
|
};
|
|
|
|
#endif // JKQTMATHTEXTBRACENODE_H
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|