QwtSymbol Class Reference

List of all members.

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Detailed Description

A class for drawing symbols.

Definition at line 22 of file qwt_symbol.h.

Public Types
enum	Style {   NoSymbol = -1,   Ellipse,   Rect,   Diamond,   Triangle,   DTriangle,   UTriangle,   LTriangle,   RTriangle,   Cross,   XCross,   HLine,   VLine,   Star1,   Star2,   Hexagon,   StyleCnt }
Public Member Functions
	QwtSymbol ()
	QwtSymbol (Style st, const QBrush &bd, const QPen &pn, const QSize &s)
virtual	~QwtSymbol ()
bool	operator!= (const QwtSymbol &) const
bool	operator== (const QwtSymbol &) const
void	setSize (const QSize &s)
void	setSize (int a, int b=-1)
void	setBrush (const QBrush &b)
void	setPen (const QPen &p)
void	setStyle (Style s)
const QBrush &	brush () const
const QPen &	pen () const
const QSize &	size () const
Style	style () const
void	draw (QPainter *p, const QPoint &pt) const
void	draw (QPainter *p, int x, int y) const
virtual void	draw (QPainter *p, const QRect &r) const

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Member Enumeration Documentation

enum QwtSymbol::Style

Style See also: QwtSymbol::setStyle, QwtSymbol::style Definition at line 29 of file qwt_symbol.h.

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Constructor & Destructor Documentation

QwtSymbol::QwtSymbol (   )

Default Constructor The symbol is constructed with gray interior, black outline with zero width, no size and style 'NoSymbol'. Definition at line 22 of file qwt_symbol.cpp.

QwtSymbol::QwtSymbol (  QwtSymbol::Style  style, const QBrush &  brush, const QPen &  pen, const QSize &  size )

Constructor. Parameters: style  Symbol Style brush  brush to fill the interior pen  outline pen size  size Definition at line 37 of file qwt_symbol.cpp.

QwtSymbol::~QwtSymbol (   )  [virtual]

Destructor. Definition at line 47 of file qwt_symbol.cpp.

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Member Function Documentation

const QBrush& QwtSymbol::brush (   )  const [inline]

Return Brush. Definition at line 67 of file qwt_symbol.h. Referenced by QwtPlotCurve::drawSymbols(), and operator==().

void QwtSymbol::draw (  QPainter *  painter, const QRect &  r )  const [virtual]

Draw the symbol into a bounding rectangle. This function assumes that the painter has been initialized with brush and pen before. This allows a much more performant implementation when painting many symbols with the same brush and pen like in curves. Parameters: painter  Painter r  Bounding rectangle Definition at line 116 of file qwt_symbol.cpp. References QwtPainter::drawEllipse(), QwtPainter::drawLine(), QwtPainter::drawPolygon(), and QwtPainter::drawRect().

void QwtSymbol::draw (  QPainter *  p, int  x, int  y )  const

Draw the symbol at a point (x,y). Definition at line 100 of file qwt_symbol.cpp. References draw().

void QwtSymbol::draw (  QPainter *  painter, const QPoint &  pos )  const

Draw the symbol at a specified point. Parameters: painter  Painter pos  Center of the symbol Definition at line 294 of file qwt_symbol.cpp. References QwtPainter::metricsMap(). Referenced by draw(), and QwtPlotCurve::drawSymbols().

bool QwtSymbol::operator!= (  const QwtSymbol &   )  const

!= operator Definition at line 342 of file qwt_symbol.cpp.

bool QwtSymbol::operator== (  const QwtSymbol &   )  const

== operator Definition at line 335 of file qwt_symbol.cpp. References brush(), pen(), size(), and style().

const QPen& QwtSymbol::pen (   )  const [inline]

Return Pen. Definition at line 69 of file qwt_symbol.h. Referenced by QwtPlotCurve::drawSymbols(), and operator==().

void QwtSymbol::setBrush (  const QBrush &  br  )

Assign a brush. The brush is used to draw the interior of the symbol. Parameters: br  brush Definition at line 80 of file qwt_symbol.cpp.

void QwtSymbol::setPen (  const QPen &  pn  )

Assign a pen. The pen is used to draw the symbol's outline. Parameters: pn  pen Definition at line 92 of file qwt_symbol.cpp.

void QwtSymbol::setSize (  int  w, int  h = -1 )

Specify the symbol's size. If the 'h' parameter is left out or less than 0, and the 'w' parameter is greater than or equal to 0, the symbol size will be set to (w,w). Parameters: w  width h  height (defaults to -1) Definition at line 60 of file qwt_symbol.cpp.

void QwtSymbol::setSize (  const QSize &  s  )

Set the symbol's size. Definition at line 68 of file qwt_symbol.cpp.

void QwtSymbol::setStyle (  QwtSymbol::Style  s  )

Specify the symbol style. The following styles are defined: NoSymbol No Style. The symbol cannot be drawn. Ellipse Ellipse or circle Rect Rectangle Diamond Diamond Triangle Triangle pointing upwards DTriangle Triangle pointing downwards UTriangle Triangle pointing upwards LTriangle Triangle pointing left RTriangle Triangle pointing right Cross Cross (+) XCross Diagonal cross (X) HLine Horizontal line VLine Vertical line Star1 X combined with + Star2 Six-pointed star Hexagon Hexagon Parameters: s  style Definition at line 329 of file qwt_symbol.cpp.

const QSize& QwtSymbol::size (   )  const [inline]

Return Size. Definition at line 71 of file qwt_symbol.h. Referenced by QwtPlotCurve::drawSymbols(), and operator==().

Style QwtSymbol::style (   )  const [inline]

Return Style. Definition at line 73 of file qwt_symbol.h. Referenced by operator==().

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