conflicting packages
QwtSymbol(3) | Qwt User's Guide | QwtSymbol(3) |
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, UserStyle = 1000 }
Public Member Functions¶
QwtSymbol (Style=NoSymbol)
Protected Member Functions¶
virtual void drawSymbols (QPainter *, const QPointF *, int numPoints) const
Detailed Description¶
A class for drawing symbols.Member Enumeration Documentation¶
enum QwtSymbol::Style Symbol Style¶
See also:setStyle(), style()
- 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.
- UserStyle
- Styles >= QwtSymbol::UserSymbol are reserved for derived classes of QwtSymbol that overload drawSymbols() with additional application specific symbol types.
Constructor & Destructor Documentation¶
QwtSymbol::QwtSymbol (Stylestyle = NoSymbol) Default Constructor¶
Parameters:style Symbol Style
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:style Symbol Style
brush brush to fill the interior
pen outline pen
size size
See also:
setStyle(), setBrush(),
setPen(), setSize()
QwtSymbol::QwtSymbol (const QwtSymbol &other)¶
Copy constructor. Parameters:other Symbol
QwtSymbol::~QwtSymbol () [virtual]¶
Destructor.Member Function Documentation¶
QSize QwtSymbol::boundingSize () const [virtual] Returns:¶
Size of the bounding rectangle of a
symbol
const QBrush & QwtSymbol::brush () const Returns:¶
Brush
See also:
setBrush()
void QwtSymbol::drawSymbol (QPainter *painter, const QPointF &pos) const [inline]¶
Draw the symbol at a specified position. Parameters:painter Painter
pos Position of the symbol in screen coordinates
void QwtSymbol::drawSymbols (QPainter *painter, const QPointF *points, intnumPoints) const [protected, virtual] Draw an array of symbols¶
Painting several symbols is more effective than drawing symbols one by one, as a couple of layout calculations and setting of pen/brush can be done once for the complete array. Parameters:painter Painter
points Array of points
numPoints Number of points
void QwtSymbol::drawSymbols (QPainter *painter, const QPolygonF &points) const [inline]¶
Draw symbols at the specified points. Parameters:painter Painter
points Positions of the symbols in screen coordinates
bool QwtSymbol::operator!= (const QwtSymbol &other) const¶
Compare two symbols.QwtSymbol & QwtSymbol::operator= (const QwtSymbol &other)¶
Assignment operator.bool QwtSymbol::operator== (const QwtSymbol &other) const¶
Compare two symbols.const QPen & QwtSymbol::pen () const Returns:¶
Pen
See also:
setPen(), brush()
void QwtSymbol::setBrush (const QBrush &brush)¶
Assign a brush. The brush is used to draw the interior of the symbol. Parameters:brush Brush
See also:
brush()
void QwtSymbol::setColor (const QColor &color) [virtual]¶
Set the color of the symbol. Change the color of the brush for symbol types with a filled area. For all other symbol types the color will be assigned to the pen. Parameters:color Color
See also:
setBrush(), setPen(),
brush(), pen()
void QwtSymbol::setPen (const QPen &pen) Assign a pen¶
The pen is used to draw the symbol's outline. Parameters:pen Pen
See also:
pen(), setBrush()
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:width Width
height Height (defaults to -1)
See also:
size()
void QwtSymbol::setSize (const QSize &size) Set the symbol's size¶
Parameters:size Size
See also:
size()
void QwtSymbol::setStyle (QwtSymbol::Stylestyle) Specify the symbol style¶
Parameters:style Style
See also:
style()
const QSize & QwtSymbol::size () const Returns:¶
Size
See also:
setSize()
QwtSymbol::Style QwtSymbol::style () const Returns:¶
Current symbol style
See also:
setStyle()
Author¶
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