QwtMathMLTextEngine (3) Linux Manual Page

QwtMathMLTextEngine –

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

Synopsis

#include <qwt_mathml_text_engine.h>

Inherits QwtTextEngine.

Public Member Functions

QwtMathMLTextEngine ()
Constructor.
virtual ~QwtMathMLTextEngine ()
Destructor.
virtual double heightForWidth (const QFont &font, int flags, const QString &text, double width) const

virtual QSizeF textSize (const QFont &font, int flags, const QString &text) const

virtual void draw (QPainter *painter, const QRectF &rect, int flags, const QString &text) const

virtual bool mightRender (const QString &) const

virtual void textMargins (const QFont &, const QString &, double &left, double &right, double &top, double &bottom) const

Additional Inherited Members

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.

Member Function Documentation

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

double QwtMathMLTextEngine::heightForWidth (const QFont &font, intflags, const QString &text, doublewidth) 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, 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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