public class PainterChain

Object
PainterChain

A painter chain allows us to chain together several painters to provide a “layer” effect where each painter only draws one element.

Constructors

`public PainterChain(Painter[] chain)`	Create a new painter chain which will paint all of the elements in the chain in sequence from 0 to the last element
`public PainterChain(Painter painter)`	Create a new painter chain which will paint all of the elements in the chain in sequence from 0 to the last element

Methods

`public static void installGlassPane(Form f, Painter p)`	Installs a glass pane on the given form making sure to make it a painter chain only if required by existing painter
`public static void removeGlassPane(Form f, Painter p)`	Removes a glass pane from the given form, this is the opposite operation for the install glass pane
`public` `PainterChain addPainter(Painter p)`	Creates a new chain based on the existing chain with the new element added at the end
`public` `PainterChain prependPainter(Painter p)`	Creates a new chain based on the existing chain with the new element added at the beginning
`public void paint(Graphics g, Rectangle rect)`	Draws inside the given rectangle clipping area.
`public` `Painter[] getChain()`	Allows us to traverse the painter chain

Inherited methods

From Object

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

Constructor details

PainterChain

public PainterChain(Painter[] chain)

Create a new painter chain which will paint all of the elements in the chain in sequence from 0 to the last element

Parameters

chain Painter[]: the chain of components in the painter

PainterChain

public PainterChain(Painter painter)

Create a new painter chain which will paint all of the elements in the chain in sequence from 0 to the last element

Parameters

painter Painter: the chain first Painter

Method details

installGlassPane

public static void installGlassPane(Form f, Painter p)

Installs a glass pane on the given form making sure to make it a painter chain only if required by existing painter

Parameters

f Form: form on which to install the chain
p Painter: painter to install

removeGlassPane

public static void removeGlassPane(Form f, Painter p)

Removes a glass pane from the given form, this is the opposite operation for the install glass pane

Parameters

f Form: form from which to remove the chain
p Painter: painter to remove

addPainter

public PainterChain addPainter(Painter p)

Creates a new chain based on the existing chain with the new element added at the end

Parameters

p Painter: new painter

Returns

new chain element

prependPainter

public PainterChain prependPainter(Painter p)

Creates a new chain based on the existing chain with the new element added at the beginning

Parameters

p Painter: new painter

Returns

new chain element

paint

public void paint(Graphics g, Rectangle rect)

Draws inside the given rectangle clipping area.

Parameters

g Graphics: the Graphics object
rect Rectangle: the given rectangle cliping area

getChain

public Painter[] getChain()

Allows us to traverse the painter chain

Returns

the internal painter chain