fdda.graphics.java2d
Class Message

java.lang.Object
  |
  +--fdda.graphics.java2d.Component
        |
        +--fdda.graphics.java2d.Message

All Implemented Interfaces:

Cloneable, Component, Message

public class Message

extends Component

implements Message

Implementation of the message interface. The message is shown as a small rectangle.

Author:

Jörg Rüdenauer

Field Summary

static double	HALF_LENGTH half the length of the message rectangle
static double	HALF_WIDTH half the width of the message rectangle

Fields inherited from class fdda.graphics.java2d.Component

COLOR_NORMAL, COLOR_SELECTED, dirtyShape, selected, shape, x, y

Fields inherited from interface fdda.graphics.Component

SEL_ALL, SEL_EQUALS, SEL_MOVABLES, SEL_NOTHING

Constructor Summary

Message(Line line, boolean forward)
Constructor

Method Summary

protected void	calcShape() Recalculates the shape.
boolean	doesMoveInLineDirection() Returns whether the message moves in the direction of the line
void	draw(Graphics2D graphContext) Draws the component, using the given graphics.
Color	getColor() Returns the color of the message
Line	getLine() Returns the line on which the message moves
Message	getRealMessage() Returns the underlying message of the algorithm
boolean	isMovable() Returns false.
void	move(double xOffset, double yOffset) Move the component (or its most prominent point).
void	moveForward() Moves the message forward, towards its destination
int	selectableWith() Returns SEL_NOTHING.
void	setColor(Color color) Sets the color of the message
void	setRealMessage(Message message) Sets the underlying message of the algorithm
Object	visit(ComponentVisitor visitor) Calls visitMessage according to visitor pattern

Methods inherited from class fdda.graphics.java2d.Component

clone, deselect, getGraphicalSystem, getShape, getX, getY, isSelected, recalculateShape, select, setGraphicalSystem, setXY

Methods inherited from class java.lang.Object

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

Methods inherited from interface fdda.graphics.Component

clone, deselect, getGraphicalSystem, getShape, getX, getY, isSelected, recalculateShape, select, setGraphicalSystem, setXY

Field Detail

HALF_LENGTH

public static final double HALF_LENGTH

half the length of the message rectangle

See Also:

Constant Field Values

HALF_WIDTH

public static final double HALF_WIDTH

half the width of the message rectangle

See Also:

Constant Field Values

Constructor Detail

Message

public Message(Line line,
               boolean forward)

Constructor

Parameters:

line - the line on which the message moves

forward - whether the message moves forward

Method Detail

calcShape

protected void calcShape()

Description copied from class: Component

Recalculates the shape. Is called by getShape if the flag dirtyShape is set. Must unset the flag after calculation.

Specified by:

calcShape in class Component

draw

public void draw(Graphics2D graphContext)

Description copied from class: Component

Draws the component, using the given graphics. The graphics should have the same attributes (color, pen, etc.) after the call as before the call.

Specified by:

draw in class Component

Parameters:

graphContext - the graphics

getRealMessage

public Message getRealMessage()

Description copied from interface: Message

Returns the underlying message of the algorithm

Specified by:

getRealMessage in interface Message

Returns:

the real message

setRealMessage

public void setRealMessage(Message message)

Description copied from interface: Message

Sets the underlying message of the algorithm

Specified by:

setRealMessage in interface Message

Parameters:

message - the real message

doesMoveInLineDirection

public boolean doesMoveInLineDirection()

Description copied from interface: Message

Returns whether the message moves in the direction of the line

Specified by:

doesMoveInLineDirection in interface Message

Returns:

whether the message moves in the direction of the line

moveForward

public void moveForward()

Description copied from interface: Message

Moves the message forward, towards its destination

Specified by:

moveForward in interface Message

isMovable

public boolean isMovable()

Returns false.

Specified by:

isMovable in interface Component

Returns:

true, iff the user can move the component

See Also:

Component.isMovable()

move

public void move(double xOffset,
                 double yOffset)

Description copied from interface: Component

Move the component (or its most prominent point).

Specified by:

move in interface Component

Parameters:

xOffset - offset for move in x direction

yOffset - offset for move in y direction

selectableWith

public int selectableWith()

Returns SEL_NOTHING. But messages can't be selected anyway.

Specified by:

selectableWith in interface Component

Returns:

constant indicating the selection class

See Also:

Component.selectableWith()

visit

public Object visit(ComponentVisitor visitor)

Calls visitMessage according to visitor pattern

Specified by:

visit in interface Component

Parameters:

visitor - the visitor

Returns:

specific to subclass

See Also:

Component.visit(fdda.graphics.ComponentVisitor)

getLine

public Line getLine()

Description copied from interface: Message

Returns the line on which the message moves

Specified by:

getLine in interface Message

Returns:

the line

setColor

public void setColor(Color color)

Description copied from interface: Message

Sets the color of the message

Specified by:

setColor in interface Message

Parameters:

color - the color

getColor

public Color getColor()

Description copied from interface: Message

Returns the color of the message

Specified by:

getColor in interface Message

Returns:

the color