Class Pen

java.lang.Object
  Pen

public class Pen
extends java.lang.Object

Class to represent a pen which has a color, width, and a list of lines that it should draw. A pen also knows if it is up or down Copyright Georgia Institute of Technology 2004

Author:

Barb Ericson ericson@cc.gatech.edu

Constructor Summary

Pen()
Constructor that takes no arguments

Pen(java.awt.Color color, int width)
Constructor that takes all the ink color, and width

Pen(java.awt.Color color, int width, boolean penDown)
Constructor that takes the ink color, width, and penDown flag

Method Summary

void	addLine(int x1, int y1, int x2, int y2) Method to add a line segment if the pen is down
void	clearLines() Method to clear all the lines stored for this pen
java.awt.Color	getColor() Method to get the pen (ink) color
int	getWidth() Method to get the width of the pen
boolean	isPenDown() Method to get pen down status
void	paintComponent(java.awt.Graphics g) Metod to paint the lines
void	setColor(java.awt.Color color) Method to set the pen (ink) color
void	setPenDown(boolean value) Method to set the pen down value
void	setWidth(int width) Method to set the width of the pen

Methods inherited from class java.lang.Object

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

Constructor Detail

Pen

public Pen()

Constructor that takes no arguments

Pen

public Pen(java.awt.Color color,
           int width)

Constructor that takes all the ink color, and width

Parameters:

color - the ink color

width - the width in pixels

Pen

public Pen(java.awt.Color color,
           int width,
           boolean penDown)

Constructor that takes the ink color, width, and penDown flag

Parameters:

color - the ink color

width - the width in pixels

penDown - the flag if the pen is down

Method Detail

isPenDown

public boolean isPenDown()

Method to get pen down status

Returns:

true if the pen is down else false

setPenDown

public void setPenDown(boolean value)

Method to set the pen down value

Parameters:

value - the new value to use

getColor

public java.awt.Color getColor()

Method to get the pen (ink) color

Returns:

the ink color

setColor

public void setColor(java.awt.Color color)

Method to set the pen (ink) color

Parameters:

color - the color to use

getWidth

public int getWidth()

Method to get the width of the pen

Returns:

the width in pixels

setWidth

public void setWidth(int width)

Method to set the width of the pen

Parameters:

width - the width to use in pixels

addLine

public void addLine(int x1,
                    int y1,
                    int x2,
                    int y2)

Method to add a line segment if the pen is down

Parameters:

x1 - the first x

y1 - the first y

x2 - the second x

y2 - the second y

clearLines

public void clearLines()

Method to clear all the lines stored for this pen

paintComponent

public void paintComponent(java.awt.Graphics g)

Metod to paint the lines

Parameters:

g - the graphics context