QwtMathMLTextEngine Class Reference

#include <qwt_mathml_text_engine.h>

Inherits QwtTextEngine.

List of all members.

Public Member Functions
virtual void	draw (QPainter *painter, const QRectF &rect, int flags, const QString &text) const
virtual double	heightForWidth (const QFont &font, int flags, const QString &text, double width) const
virtual bool	mightRender (const QString &) const
	QwtMathMLTextEngine ()
virtual void	textMargins (const QFont &, const QString &, double &left, double &right, double &top, double &bottom) const
virtual QSizeF	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.

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.

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Constructor & Destructor Documentation

QwtMathMLTextEngine::QwtMathMLTextEngine

(

)

Constructor.

QwtMathMLTextEngine::~QwtMathMLTextEngine

(

)

[virtual]

Destructor.

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Member Function Documentation

void QwtMathMLTextEngine::draw	(	QPainter *	painter,
		const QRectF &	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.

double QwtMathMLTextEngine::heightForWidth	(	const QFont &	font,
		int	flags,
		const QString &	text,
		double	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.

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 &	,
		double &	left,
		double &	right,
		double &	top,
		double &	bottom
	)		const [virtual]

Return margins around the texts

Parameters:

left	Return 0
right	Return 0
top	Return 0
bottom	Return 0

Implements QwtTextEngine.

QSizeF 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.