KPlotObject Class Reference

#include <kplotobject.h>

Public Types
enum	PlotType { UnknownType = 0 , Points = 1 , Lines = 2 , Bars = 4 }
typedef QFlags< PlotType >	PlotTypes
enum	PointStyle {   NoPoints = 0 , Circle = 1 , Letter = 2 , Triangle = 3 ,   Square = 4 , Pentagon = 5 , Hexagon = 6 , Asterisk = 7 ,   Star = 8 , UnknownPoint }

Public Member Functions
	KPlotObject (const QColor &color=Qt::white, PlotType otype=Points, double size=2.0, PointStyle ps=Circle)
	~KPlotObject ()
void	addPoint (const QPointF &p, const QString &label=QString(), double barWidth=0.0)
void	addPoint (double x, double y, const QString &label=QString(), double barWidth=0.0)
void	addPoint (KPlotPoint *p)
const QBrush	barBrush () const
const QPen &	barPen () const
const QBrush	brush () const
void	clearPoints ()
void	draw (QPainter *p, KPlotWidget *pw)
const QPen &	labelPen () const
const QPen &	linePen () const
const QPen &	pen () const
PlotTypes	plotTypes () const
QList< KPlotPoint * >	points () const
PointStyle	pointStyle () const
void	removePoint (int index)
void	setBarBrush (const QBrush &b)
void	setBarPen (const QPen &p)
void	setBrush (const QBrush &b)
void	setLabelPen (const QPen &p)
void	setLinePen (const QPen &p)
void	setPen (const QPen &p)
void	setPointStyle (PointStyle p)
void	setShowBars (bool b)
void	setShowLines (bool b)
void	setShowPoints (bool b)
void	setSize (double s)
double	size () const

Detailed Description

Encapsulates a data set to be plotted in a KPlotWidget.

Think of a KPlotObject as a set of data displayed as a group in the plot. Each KPlotObject consists of a list of KPlotPoints, a "type" controlling how the data points are displayed (some combination of Points, Lines, or Bars), a color, and a size. There is also a parameter which controls the shape of the points used to display the KPlotObject.

Note

KPlotObject will take care of the points added to it, so when clearing the points list (eg with clearPoints()) any previous reference to a KPlotPoint already added to a KPlotObject will be invalid.

Author

Jason Harris

Version

1.1

Definition at line 42 of file kplotobject.h.

Member Typedef Documentation

PlotTypes

typedef QFlags< PlotType > KPlotObject::PlotTypes

Definition at line 60 of file kplotobject.h.

Member Enumeration Documentation

PlotType

enum KPlotObject::PlotType

The type classification of the KPlotObject.

These are bitmask values that can be OR'd together, so that a set of points can be represented in the plot in multiple ways.

Note

points should be added in order of increasing x-coordinate when using Bars.

Enumerator
Points	each KPlotPoint is represented with a drawn point
Lines	each KPlotPoint is connected with a line
Bars	each KPlotPoint is shown as a vertical bar

Definition at line 54 of file kplotobject.h.

PointStyle

enum KPlotObject::PointStyle

The available shape styles for plotted points.

Definition at line 65 of file kplotobject.h.

Constructor & Destructor Documentation

KPlotObject()

KPlotObject::KPlotObject ( const QColor & color = Qt::white, PlotType otype = Points, double size = 2.0, PointStyle ps = Circle )

explicit

Constructor.

Parameters

color	The color for plotting this object. By default this sets the color for Points, Lines and Bars, but there are functions to override any of these.
otype	the PlotType for this object (Points, Lines or Bars)
size	the size to use for plotted points, in pixels
ps	The PointStyle describing the shape for plotted points

Definition at line 40 of file kplotobject.cpp.

~KPlotObject()

KPlotObject::~KPlotObject ( )

default

Destructor.

Member Function Documentation

addPoint() [1/3]

void KPlotObject::addPoint	(	const QPointF &	p,
		const QString &	label = QString(),
		double	barWidth = 0.0 )

Add a point to the object's list of points, using input data to construct a KPlotPoint.

Parameters

p	the QPointF to add.
label	the optional text label for this point
barWidth	the width of the bar, if this object is to be drawn with bars

Note

if

Parameters

barWidth

is left at its default value of 0.0, then the width will be automatically set to the distance between this point and the one to its right.

Definition at line 175 of file kplotobject.cpp.

addPoint() [2/3]

void KPlotObject::addPoint	(	double	x,
		double	y,
		const QString &	label = QString(),
		double	barWidth = 0.0 )

Add a point to the object's list of points, using input data to construct a KPlotPoint.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Parameters

x	the X-coordinate of the point to add.
y	the Y-coordinate of the point to add.
label	the optional text label
barWidth	the width of the bar, if this object is to be drawn with bars

Note

if

Parameters

barWidth

is left at its default value of 0.0, then the width will be automatically set to the distance between this point and the one to its right.

Definition at line 188 of file kplotobject.cpp.

addPoint() [3/3]

void KPlotObject::addPoint

(

KPlotPoint *

p

)

Add a given KPlotPoint to the object's list of points.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Parameters

p	pointer to the KPlotPoint to add.

Definition at line 180 of file kplotobject.cpp.

barBrush()

const QBrush KPlotObject::barBrush

(

)

const

Returns

the brush to use for filling bars for this Object.

Definition at line 160 of file kplotobject.cpp.

barPen()

const QPen & KPlotObject::barPen

(

)

const

Returns

the pen to use for drawing bars for this Object.

Definition at line 130 of file kplotobject.cpp.

brush()

const QBrush KPlotObject::brush

(

)

const

Returns

the default Brush to use for this Object.

Definition at line 150 of file kplotobject.cpp.

clearPoints()

void KPlotObject::clearPoints

(

)

Remove and destroy the points of this object.

Definition at line 203 of file kplotobject.cpp.

draw()

void KPlotObject::draw	(	QPainter *	p,
		KPlotWidget *	pw )

Draw this KPlotObject on the given QPainter.

Parameters

p	The QPainter to draw on
pw	the KPlotWidget to draw on (this is needed for the KPlotWidget::mapToWidget() function)

Definition at line 209 of file kplotobject.cpp.

labelPen()

const QPen & KPlotObject::labelPen

(

)

const

Returns

the pen to use for drawing labels for this Object.

Definition at line 140 of file kplotobject.cpp.

linePen()

const QPen & KPlotObject::linePen

(

)

const

Returns

the pen to use for drawing lines for this Object.

Definition at line 120 of file kplotobject.cpp.

pen()

const QPen & KPlotObject::pen

(

)

const

Returns

the default pen for this Object. If no other pens are set, this pen will be used for points, lines, bars and labels (this pen is always used for points).

Definition at line 110 of file kplotobject.cpp.

plotTypes()

KPlotObject::PlotTypes KPlotObject::plotTypes

(

)

const

Returns

the plot flags of the object

Definition at line 58 of file kplotobject.cpp.

points()

QList< KPlotPoint * > KPlotObject::points

(

)

const

Returns

the list of KPlotPoints that make up this object

Definition at line 170 of file kplotobject.cpp.

pointStyle()

KPlotObject::PointStyle KPlotObject::pointStyle

(

)

const

Returns

the style used for drawing the points in this object

Definition at line 100 of file kplotobject.cpp.

removePoint()

void KPlotObject::removePoint

(

int

index

)

Remove the QPointF at position index from the list of points.

Parameters

index

the index of the point to be removed.

Definition at line 193 of file kplotobject.cpp.

setBarBrush()

void KPlotObject::setBarBrush

(

const QBrush &

b

)

Set the brush to use for drawing bars for this object The brush to use.

Definition at line 165 of file kplotobject.cpp.

setBarPen()

void KPlotObject::setBarPen

(

const QPen &

p

)

Set the pen to use for drawing bars for this object The pen to use.

Definition at line 135 of file kplotobject.cpp.

setBrush()

void KPlotObject::setBrush

(

const QBrush &

b

)

Set the default brush to use for this object The brush to use.

Definition at line 155 of file kplotobject.cpp.

setLabelPen()

void KPlotObject::setLabelPen

(

const QPen &

p

)

Set the pen to use for labels for this object The pen to use.

Definition at line 145 of file kplotobject.cpp.

setLinePen()

void KPlotObject::setLinePen

(

const QPen &

p

)

Set the pen to use for drawing lines for this object The pen to use.

Definition at line 125 of file kplotobject.cpp.

setPen()

void KPlotObject::setPen

(

const QPen &

p

)

Set the default pen for this object The pen to use.

Definition at line 115 of file kplotobject.cpp.

setPointStyle()

void KPlotObject::setPointStyle

(

PointStyle

p

)

Set a new style for drawing the points in this object.

Parameters

p	the new style

Definition at line 105 of file kplotobject.cpp.

setShowBars()

void KPlotObject::setShowBars

(

bool

b

)

Set whether bars will be drawn for this object.

Parameters

b	if true, bars will be drawn

Definition at line 81 of file kplotobject.cpp.

setShowLines()

void KPlotObject::setShowLines

(

bool

b

)

Set whether lines will be drawn for this object.

Parameters

b	if true, lines will be drawn

Definition at line 72 of file kplotobject.cpp.

setShowPoints()

void KPlotObject::setShowPoints

(

bool

b

)

Set whether points will be drawn for this object.

Parameters

b	if true, points will be drawn

Definition at line 63 of file kplotobject.cpp.

setSize()

void KPlotObject::setSize

(

double

s

)

Set the size for plotted points in this object, in pixels.

Parameters

s	the new size

Definition at line 95 of file kplotobject.cpp.

size()

double KPlotObject::size

(

)

const

Returns

the size of the plotted points in this object, in pixels

Definition at line 90 of file kplotobject.cpp.

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The documentation for this class was generated from the following files:

• kplotobject.h
• kplotobject.cpp