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QwtMathMLTextEngine(3) Qwt User's Guide QwtMathMLTextEngine(3)

NAME

QwtMathMLTextEngine -
Text Engine for the MathML renderer of the Qt solutions package.
 

SYNOPSIS

#include <qwt_mathml_text_engine.h>
Inherits QwtTextEngine.

Public Member Functions


virtual void draw (QPainter *painter, const QRect &rect, int flags, const QString &text) const
 
virtual int heightForWidth (const QFont &font, int flags, const QString &text, int width) const
 
virtual bool mightRender (const QString &) const
 
QwtMathMLTextEngine ()
 
virtual void textMargins (const QFont &, const QString &, int &left, int &right, int &top, int &bottom) const
 
virtual QSize textSize (const QFont &font, int flags, const QString &text) const
 
virtual ~QwtMathMLTextEngine ()
 

Detailed Description

Text Engine for the MathML renderer of the Qt solutions package.
 
The Qt Solution package includes a renderer for MathML http://www.trolltech.com/products/qt/addon/solutions/catalog/4/Widgets/qtmmlwidget that is available for owners of a commercial Qt license. You need a version >= 2.1, that is only available for Qt4.
To enable MathML support the following code needs to be added to the application: 

#include <qwt_mathml_text_engine.h>


QwtText::setTextEngine(QwtText::MathMLText, new QwtMathMLTextEngine());
See also:
QwtTextEngine, QwtText::setTextEngine
Warning:
Unfortunately the MathML renderer doesn't support rotating of texts.
 

Constructor & Destructor Documentation

QwtMathMLTextEngine::QwtMathMLTextEngine ()

Constructor.

QwtMathMLTextEngine::~QwtMathMLTextEngine () [virtual]

Destructor.

Member Function Documentation

void QwtMathMLTextEngine::draw (QPainter *painter, const QRect &rect, intflags, const QString &text) const [virtual] Draw the text in a clipping rectangle

Parameters:
painter Painter
 
rect Clipping rectangle
 
flags Bitwise OR of the flags like in for QPainter::drawText
 
text Text to be rendered
 
Implements QwtTextEngine.

int QwtMathMLTextEngine::heightForWidth (const QFont &font, intflags, const QString &text, intwidth) const [virtual] Find the height for a given width

Parameters:
font Font of the text
 
flags Bitwise OR of the flags used like in QPainter::drawText
 
text Text to be rendered
 
width Width
Returns:
Calculated height
 
Implements QwtTextEngine.

bool QwtMathMLTextEngine::mightRender (const QString &text) const [virtual] Test if a string can be rendered by QwtMathMLTextEngine

Parameters:
text Text to be tested
Returns:
true, if text begins with '<math>'.
 
Implements QwtTextEngine.

void QwtMathMLTextEngine::textMargins (const QFont &, const QString &, int &left, int &right, int &top, int &bottom) const [virtual] Return margins around the texts

Parameters:
left Return 0
 
right Return 0
 
top Return 0
 
bottom Return 0
 
Implements QwtTextEngine.

QSize QwtMathMLTextEngine::textSize (const QFont &font, intflags, const QString &text) const [virtual] Returns the size, that is needed to render text

Parameters:
font Font of the text
 
flags Bitwise OR of the flags used like in QPainter::drawText
 
text Text to be rendered
Returns:
Caluclated size
 
Implements QwtTextEngine.
 

Author

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Mon Aug 1 2011 Version 5.2.2