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QwtTextEngine Class Reference

Inheritance diagram for QwtTextEngine:

Inheritance graph
[legend]
List of all members.

Detailed Description

Definition at line 23 of file qwt_text_engine.h.

Public Member Functions

virtual ~QwtTextEngine ()
virtual int heightForWidth (const QFont &font, int flags, const QString &text, int width) const =0
virtual QSize textSize (const QFont &font, int flags, const QString &text) const =0
virtual void draw (QPainter *painter, const QRect &rect, int flags, const QString &text) const =0
virtual bool mightRender (const QString &) const =0
virtual void textMargins (const QFont &, const QString &, int &left, int &right, int &top, int &bottom)

Protected Member Functions

 QwtTextEngine ()


Member Function Documentation

virtual void QwtTextEngine::draw QPainter *  painter,
const QRect &  rect,
int  flags,
const QString &  text
const [pure virtual]
 

Draw the text in a clipping rectangle.

Parameters:
painter Painter
rect Clipping rectangle

Implemented in QwtPlainTextEngine, and QwtRichTextEngine.

virtual int QwtTextEngine::heightForWidth const QFont &  font,
int  flags,
const QString &  text,
int  width
const [pure virtual]
 

Find the height for a given width

Implemented in QwtPlainTextEngine, and QwtRichTextEngine.

void QwtTextEngine::textMargins const QFont &  ,
const QString &  ,
int &  left,
int &  right,
int &  top,
int &  bottom
[virtual]
 

Return margins around the texts

The textSize might include margins around the text, like QFontMetrics::descent. In situations where texts need to be aligend in detail, knowing these margins might improve the layout calculations.

Reimplemented in QwtPlainTextEngine.

Definition at line 129 of file qwt_text_engine.cpp.

virtual QSize QwtTextEngine::textSize const QFont &  font,
int  flags,
const QString &  text
const [pure virtual]
 

Returns the size, that is needed to render text

Implemented in QwtPlainTextEngine, and QwtRichTextEngine.


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