QwtMathMLTextEngine (3)

#include <qwt_mathml_text_engine.h>

Inherits QwtTextEngine.

Public Member Functions

QwtMathMLTextEngine ()

virtual ~QwtMathMLTextEngine ()

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

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

Additional Inherited Members

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.

void QwtMathMLTextEngine::draw (QPainter *painter, const QRect &rect, intflags, const QString &text) const\fC [virtual]\fP

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\fC [virtual]\fP

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\fC [virtual]\fP

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\fC [virtual]\fP

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\fC [virtual]\fP

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.

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