Class Line

java.lang.Object
  Line

Direct Known Subclasses:

HLine, VLine

public abstract class Line

extends Object

A Line has a length and a paintChar used to paint itself on a Screen. Subclasses of this abstract class specify the direction of the Line.

Version:

5

Field Summary

protected int	length
protected char	paintChar

Constructor Summary

protected

Line(int length, char paintChar) Construct a Line.

Method Summary

int	getLength() Get the length of this line.
char	getPaintChar() Get the paintChar of this Line.
void	paintOn(Screen s) Paint this Line on Screen s at position (0,0).
abstract void	paintOn(Screen s, int x, int y) Paint this Line on Screen s at position (x,y).
void	setLength(int length) Set the length of this line.
void	setPaintChar(char paintChar) Set the paintChar of this Line.

Methods inherited from class java.lang.Object

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

Field Detail

length

protected int length

paintChar

protected char paintChar

Constructor Detail

Line

protected Line(int length,
               char paintChar)

Construct a Line.

Parameters:

length - length in (character) pixels.

paintChar - character used for painting this Line.

Method Detail

getLength

public int getLength()

Get the length of this line.

Returns:

the length in (character) pixels.

getPaintChar

public char getPaintChar()

Get the paintChar of this Line.

Returns:

the paintChar.

paintOn

public void paintOn(Screen s)

Paint this Line on Screen s at position (0,0).

Parameters:

s - the Screen on which this Line is to be painted.

paintOn

public abstract void paintOn(Screen s,
                             int x,
                             int y)

Paint this Line on Screen s at position (x,y).

Parameters:

s - the Screen on which this Line is to be painted.

x - the x position for the line.

y - the y position for the line.

setLength

public void setLength(int length)

Set the length of this line.

Parameters:

length - the new length in (character) pixels.

setPaintChar

public void setPaintChar(char paintChar)

Set the paintChar of this Line.

Parameters:

paintChar - the new paintChar.