Qwt User's Guide  6.1.3
QwtPlainTextEngine Class Reference

A text engine for plain texts. More...

#include <qwt_text_engine.h>

Inheritance diagram for QwtPlainTextEngine:

Public Member Functions

 QwtPlainTextEngine ()
 Constructor.
 
virtual ~QwtPlainTextEngine ()
 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
 Draw the text in a clipping rectangle. More...
 
virtual bool mightRender (const QString &) const
 
virtual void textMargins (const QFont &, const QString &, double &left, double &right, double &top, double &bottom) const
 
- Public Member Functions inherited from QwtTextEngine
virtual ~QwtTextEngine ()
 Destructor.
 

Additional Inherited Members

- Protected Member Functions inherited from QwtTextEngine
 QwtTextEngine ()
 Constructor.
 

Detailed Description

A text engine for plain texts.

QwtPlainTextEngine renders texts using the basic Qt classes QPainter and QFontMetrics.

Member Function Documentation

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

Draw the text in a clipping rectangle.

A wrapper for QPainter::drawText.

Parameters
painterPainter
rectClipping rectangle
flagsBitwise OR of the flags used like in QPainter::drawText
textText to be rendered

Implements QwtTextEngine.

double QwtPlainTextEngine::heightForWidth ( const QFont &  font,
int  flags,
const QString &  text,
double  width 
) const
virtual

Find the height for a given width

Parameters
fontFont of the text
flagsBitwise OR of the flags used like in QPainter::drawText
textText to be rendered
widthWidth
Returns
Calculated height

Implements QwtTextEngine.

bool QwtPlainTextEngine::mightRender ( const QString &  ) const
virtual

Test if a string can be rendered by this text engine.

Returns
Always true. All texts can be rendered by QwtPlainTextEngine

Implements QwtTextEngine.

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

Return margins around the texts

Parameters
fontFont of the text
leftReturn 0
rightReturn 0
topReturn value for the top margin
bottomReturn value for the bottom margin

Implements QwtTextEngine.

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

Returns the size, that is needed to render text

Parameters
fontFont of the text
flagsBitwise OR of the flags used like in QPainter::drawText
textText to be rendered
Returns
Calculated size

Implements QwtTextEngine.