com.vistech.shapes
Class Line

java.lang.Object
  |
  +--com.vistech.shapes.Shapes
        |
        +--com.vistech.shapes.Line

All Implemented Interfaces:

java.lang.Cloneable, Drawable, java.io.Serializable

public class Line

extends Shapes

implements Drawable

Represents a interactively drawable line.

Version:

1.0 29 July 1999

Author:

Larry Rodrigues

See Also:

Serialized Form

Fields inherited from class com.vistech.shapes.Shapes

basicStroke, cur, drawingColor, fillColor, fillOn, font, path, shapeCount, smallRectsOn, st

Fields inherited from interface com.vistech.shapes.Drawable

ANNOTEXT, ARROW, BOX, CUBIC_CURVE, CURVE, DOUBLE_HEADED_ARROW, ELLIPSE, LINE, NONE, POLYGON

Constructor Summary

Line()

Method Summary

boolean	contains(java.awt.Graphics2D g, int x, int y) Vhecks whether the specified point contained in the shape.
void	draw(java.awt.Graphics2D g) Draws the shape permanently, which happens when the mouse is released.
static void	drawArrow(java.awt.Point st, java.awt.Point end, java.awt.Graphics2D g) Draws two inclined lines at the current position in order to create an Line head.
void	drawInteractive(java.awt.Graphics2D g) Draws an Line interactively on a Graphics context g.
void	drawPermanent(java.awt.Graphics2D g) Draws an Line on a Graphics context g.
void	drawSmallRects(java.awt.Graphics2D g) Draws small rectangle at the shape corners to indicate that the shape is active.
void	erase(java.awt.Graphics2D g) Erase the shape.
void	init(int x, int y) Initializes the Line parameters.
void	move(java.awt.Graphics2D g, int diffx, int diffy) Moves the shape by a specified displacement.
void	setCurrentPosition(java.awt.Point cp) Sets the current position.

Methods inherited from class com.vistech.shapes.Shapes

contains, copy, getCurrentPosition, getDrawingColor, getFillColor, getFillOn, getFont, getGeneralPath, getShapeCount, getSmallRectsOn, getStartPosition, getStroke, setDrawingColor, setFillColor, setFillOn, setFont, setGeneralPath, setShapeCount, setSmallRectsOn, setStartPosition, setStroke

Methods inherited from class java.lang.Object

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

Constructor Detail

Line

public Line()

Method Detail

init

public void init(int x,
                 int y)

Initializes the Line parameters. The arguments provide the starting position of the Line.

Specified by:

init in interface Drawable

Overrides:

init in class Shapes

Parameters:

x - the x coordinate of the starting position.

y - the y coordinate of the starting poistion.

setCurrentPosition

public void setCurrentPosition(java.awt.Point cp)

Sets the current position.

Specified by:

setCurrentPosition in interface Drawable

Overrides:

setCurrentPosition in class Shapes

Parameters:

x - the x coordinate of the current position.

y - the y coordinate of the current poistion.

drawInteractive

public void drawInteractive(java.awt.Graphics2D g)

Draws an Line interactively on a Graphics context g. This API does not check whether the Line overflows the borders of the component. This method uses the XOR paint mode. It erases the previously drawn shape and draws a new shape in its place.

Specified by:

drawInteractive in interface Drawable

Parameters:

g - the graphics object on which the shape is to be drawn.

drawPermanent

public void drawPermanent(java.awt.Graphics2D g)

Draws an Line on a Graphics context g. This API does not check whether the Box overflows the borders of the component.

Parameters:

g - the graphics object on which the shape is to be drawn.

draw

public void draw(java.awt.Graphics2D g)

Description copied from interface: Drawable

Draws the shape permanently, which happens when the mouse is released.

Specified by:

draw in interface Drawable

Following copied from interface: com.vistech.shapes.Drawable

Parameters:

g - the graphcs context on which the shape is drawn.

erase

public void erase(java.awt.Graphics2D g)

Description copied from interface: Drawable

Erase the shape.

Specified by:

erase in interface Drawable

Following copied from interface: com.vistech.shapes.Drawable

Parameters:

g - the graphcs context on which the shape was drawn.

contains

public boolean contains(java.awt.Graphics2D g,
                        int x,
                        int y)

Description copied from class: Shapes

Vhecks whether the specified point contained in the shape.

Overrides:

contains in class Shapes

Following copied from class: com.vistech.shapes.Shapes

Parameters:

g - the graphics context on which the shape was drawn.

x - the coordinate of the point that is being checked for containment.

y - the coordinate of the point that is being checked for containment.

drawSmallRects

public void drawSmallRects(java.awt.Graphics2D g)

Description copied from class: Shapes

Draws small rectangle at the shape corners to indicate that the shape is active. For example, a shape that is being moved is surrounded by small rectagles at the shape corners. small rectab

Overrides:

drawSmallRects in class Shapes

Following copied from class: com.vistech.shapes.Shapes

Parameters:

g - the graphics context on which the shape was drawn.

move

public void move(java.awt.Graphics2D g,
                 int diffx,
                 int diffy)

Description copied from interface: Drawable

Moves the shape by a specified displacement.

Specified by:

move in interface Drawable

Following copied from interface: com.vistech.shapes.Drawable

Parameters:

x - the displacement.

y - the displacement.

drawArrow

public static void drawArrow(java.awt.Point st,
                             java.awt.Point end,
                             java.awt.Graphics2D g)

Draws two inclined lines at the current position in order to create an Line head.

Parameters:

st - the staring position of the line.

end - the end position of the line.

g - the graphics context.