Qwt User's Guide: QwtPlainTextEngine Class Reference

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Public Member Functions
QwtPlainTextEngine Class Reference

`#include <qwt_text_engine.h>`

Inheritance diagram for QwtPlainTextEngine:
[legend]

List of all members.

## Public Member Functions
| QwtPlainTextEngine ()
virtual | ~QwtPlainTextEngine ()
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
Public Member Functions inherited from QwtTextEngine
virtual | ~QwtTextEngine ()

## Additional Inherited Members
Protected Member Functions inherited from QwtTextEngine
| QwtTextEngine ()

## 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 QRect & | rect,
|  | int | flags,
|  | const QString & | text
| ) |  | const
| virtual

Draw the text in a clipping rectangle.

A wrapper for QPainter::drawText.

Parameters:

  painter | Painter
  rect | Clipping rectangle
  flags | Bitwise OR of the flags used like in QPainter::drawText
  text | Text to be rendered

Implements QwtTextEngine.

int QwtPlainTextEngine::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.

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 & | ,
|  | int & | left,
|  | int & | right,
|  | int & | top,
|  | int & | bottom
| ) |  | const
| virtual

Return margins around the texts

Parameters:

  font | Font of the text
  left | Return 0
  right | Return 0
  top | Return value for the top margin
  bottom | Return value for the bottom margin

Implements QwtTextEngine.

QSize QwtPlainTextEngine::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.