QwtMathMLTextEngine Class Reference

Inheritance diagram for QwtMathMLTextEngine:

[legend]Collaboration diagram for QwtMathMLTextEngine:

[legend]List of all members.

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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.

Definition at line 39 of file qwt_mathml_text_engine.h.

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

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Constructor & Destructor Documentation

QwtMathMLTextEngine::QwtMathMLTextEngine (   )

Constructor. Definition at line 22 of file qwt_mathml_text_engine.cpp.

QwtMathMLTextEngine::~QwtMathMLTextEngine (   )  [virtual]

Destructor. Definition at line 27 of file qwt_mathml_text_engine.cpp.

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Member Function Documentation

void QwtMathMLTextEngine::draw (  QPainter *  painter, const QRect &  rect, int  flags, 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. Definition at line 97 of file qwt_mathml_text_engine.cpp.

int QwtMathMLTextEngine::heightForWidth (  const QFont &  font, int  flags, const QString &  text, int  width )  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. Definition at line 41 of file qwt_mathml_text_engine.cpp. References textSize().

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. Definition at line 131 of file qwt_mathml_text_engine.cpp.

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. Definition at line 83 of file qwt_mathml_text_engine.cpp.

QSize QwtMathMLTextEngine::textSize (  const QFont &  font, int  flags, 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. Definition at line 56 of file qwt_mathml_text_engine.cpp. Referenced by heightForWidth().

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