NAME¶

QwtSymbol - A class for drawing symbols.

SYNOPSIS¶

#include <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¶

const QBrush & brush () const virtual QwtSymbol * clone () 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 bool operator!= (const QwtSymbol &) const virtual bool operator== (const QwtSymbol &) const const QPen & pen () const QwtSymbol (Style st, const QBrush &bd, const QPen &pn, const QSize &s) QwtSymbol () void setBrush (const QBrush &b) void setPen (const QPen &p) void setSize (int a, int b=-1) void setSize (const QSize &s) void setStyle (Style s) const QSize & size () const Style style () const virtual ~QwtSymbol ()

Detailed Description¶

A class for drawing symbols.

Member Enumeration Documentation¶

enum QwtSymbol::Style Style¶

See also:

Constructor & Destructor Documentation¶

QwtSymbol::QwtSymbol () Default Constructor¶

The symbol is constructed with gray interior, black outline with zero width, no size and style 'NoSymbol'.

QwtSymbol::QwtSymbol (QwtSymbol::Stylestyle, const QBrush &brush, const QPen &pen, const QSize &size)¶

Constructor. Parameters:

QwtSymbol::~QwtSymbol () [virtual]¶

Destructor.

Member Function Documentation¶

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

Return Brush.

QwtSymbol * QwtSymbol::clone () const [virtual] Allocate and return a symbol with the same attributes¶

Returns:

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:

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

Draw the symbol at a specified point. Parameters:

void QwtSymbol::draw (QPainter *p, intx, inty) const¶

Draw the symbol at a point (x,y).

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

!= operator

bool QwtSymbol::operator== (const QwtSymbol &other) const [virtual]¶

== operator

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

Return Pen.

void QwtSymbol::setBrush (const QBrush &brush)¶

Assign a brush. The brush is used to draw the interior of the symbol. Parameters:

void QwtSymbol::setPen (const QPen &pen) Assign a pen¶

The pen is used to draw the symbol's outline. The width of non cosmetic pens is scaled according to the resolution of the paint device. Parameters: See also:

void QwtSymbol::setSize (const QSize &size) Set the symbol's size¶

Parameters:

void QwtSymbol::setSize (intwidth, intheight = -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:

void QwtSymbol::setStyle (QwtSymbol::Styles)¶

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:

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

Return Size.

Style QwtSymbol::style () const [inline]¶

Return Style.

Author¶

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