Package jcckit.plot

Class BarFactory

java.lang.Object

jcckit.plot.AbstractSymbolFactory

jcckit.plot.BarFactory

All Implemented Interfaces:

SymbolFactory

public class BarFactory
extends AbstractSymbolFactory

A factory of bars. The bars are Rectangles. Depending on the configuration parameters the bars can be horizontal or vertical. Bars of several curves can be side by side or stacked. The bar length is determined by the x or y value of the curve point in device-independent coordinates. If the value is negative the bar goes into the negative direction. For stacked bars the values should always be positive.

When used inside a SimpleCurve soft clipping should always be switched off (see SimpleCurve(ConfigParameters, int, int, ClippingShape, Legend)).

Author:

Franz-Josef Elmer

Field Summary

Fields

Modifier and Type	Field	Description
static String	HORIZONTAL_BARS_KEY	Configuration parameter key.
static String	STACKED_KEY	Configuration parameter key.

Fields inherited from class jcckit.plot.AbstractSymbolFactory

_attributes, _size

Fields inherited from interface jcckit.plot.SymbolFactory

ATTRIBUTES_KEY, DEFAULT_SIZE, SIZE_KEY

Constructor Summary

Constructors

Constructor	Description
BarFactory(ConfigParameters config)	Creates an instance from the specified configuration parameters.

Method Summary

Modifier and Type	Method	Description
GraphicalElement	createLegendSymbol(GraphPoint centerPosition, double size)	Creates a symbol for the legend at the specified position.
protected GraphicalElement	createPlainSymbol(GraphPoint centerPosition, double size, GraphicAttributes attributes)	Returns null because this method isn't needed but has to be implemented.
protected Symbol	createSymbol(GraphPoint point, GraphicAttributes attributes, Hint hintForNextPoint, Hint hintFromPreviousCurve)	Creates a bar at the specified point.

Methods inherited from class jcckit.plot.AbstractSymbolFactory

createSymbol

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

STACKED_KEY

public static final String STACKED_KEY

Configuration parameter key.

See Also:

Constant Field Values

HORIZONTAL_BARS_KEY

public static final String HORIZONTAL_BARS_KEY

Configuration parameter key.

See Also:

Constant Field Values

Constructor Detail

BarFactory

public BarFactory(ConfigParameters config)

Creates an instance from the specified configuration parameters.

Key & Default Value	Type	Mandatory	Description
horizontalBars = false	boolean	no	If true horizontal bars will be drawn. Otherwise vertical bars are drawn.
stacked = false	boolean	no	If true the bars of several curves will be stacked.

In addition the configuration parameters of the constructor of the superclass AbstractSymbolFactory apply.

Method Detail

createSymbol

protected Symbol createSymbol(GraphPoint point,
                              GraphicAttributes attributes,
                              Hint hintForNextPoint,
                              Hint hintFromPreviousCurve)

Creates a bar at the specified point. If hintFromPreviousCurve is not an instance of PositionHint the values of origin and position will be (0,0).

Overrides:

createSymbol in class AbstractSymbolFactory

Parameters:

hintFromPreviousCurve - Hint from previous curve. Will be used to calculate symbol shape and hint for the next curve.

point - Symbol position.

attributes - Symbol attributes.

hintForNextPoint - Hint for the next point. Will be delivered unchanged in the return Symbol object.

createLegendSymbol

public GraphicalElement createLegendSymbol(GraphPoint centerPosition,
                                           double size)

Creates a symbol for the legend at the specified position.

Specified by:

createLegendSymbol in interface SymbolFactory

Overrides:

createLegendSymbol in class AbstractSymbolFactory

Parameters:

centerPosition - Center position of the symbol.

size - The size of the symbol.

createPlainSymbol

protected GraphicalElement createPlainSymbol(GraphPoint centerPosition,
                                             double size,
                                             GraphicAttributes attributes)

Returns null because this method isn't needed but has to be implemented.

Specified by:

createPlainSymbol in class AbstractSymbolFactory

Parameters:

centerPosition - Center position of the symbol.

size - The size of the symbol.

attributes - The attributes of the symbol.