org.jdrawing.graphics
Class DrawLine

java.lang.Object
  org.jdrawing.graphics.GraphicsOperation
      org.jdrawing.graphics.DrawLine

All Implemented Interfaces:

DrawingElement

public class DrawLine

extends GraphicsOperation

Graphics element which corresponds to Graphics.drawLine(int, int, int, int)

Constructor Summary

DrawLine(int x1, int y1, int x2, int y2)
Returns DrawLine for line starting at (x1, y1) and ending at (x2, y2).

DrawLine(int x1, int y1, int x2, int y2, Style style)
Returns DrawLine for line starting at (x1, y1) and ending at (x2, y2).

Method Summary

boolean	equals(java.lang.Object object) Checks whether two draw line operations are equal.
java.awt.Rectangle	getBounds() Returns bounding box of the element.
java.awt.geom.Rectangle2D	getBounds2D() Returns high precision bounding box of the element.
java.awt.Shape	getShapeOfOperation() Returns shape of the area updated by this operation.
int	getX1() Returns X coordinate of start point of the line.
int	getX2() Returns X coordinate of end point of the line.
int	getY1() Returns Y coordinate of start point of the line.
int	getY2() Returns Y coordinate of end point of the line.
int	hashCode() Returns the hashcode for this draw line operation.
boolean	intersects(java.awt.geom.Rectangle2D rectangle) Tests if the element intersects with the given rectangle.
void	paintOperation(java.awt.Graphics2D graphics) Performs drawing operation.
void	setBegin(int x, int y) Sets begin point for this line.
void	setEnd(int x, int y) Sets end point for this line.
void	setLine(int x1, int y1, int x2, int y2) Sets begin and end points for this line.
void	setX1(int x1) Sets X coordinate of start point of the line.
void	setX2(int x2) Sets X coordinate of end point of the line.
void	setY1(int y1) Sets Y coordinate of start point of the line.
void	setY2(int y2) Sets Y coordinate of end point of the line.

Methods inherited from class org.jdrawing.graphics.GraphicsOperation

contains, getPosition, getStyle, paint, setPosition, setStyle

Methods inherited from class java.lang.Object

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

Constructor Detail

DrawLine

public DrawLine(int x1,
                int y1,
                int x2,
                int y2)

Returns DrawLine for line starting at (x1, y1) and ending at (x2, y2).

DrawLine

public DrawLine(int x1,
                int y1,
                int x2,
                int y2,
                Style style)

Returns DrawLine for line starting at (x1, y1) and ending at (x2, y2).

Method Detail

setX1

public void setX1(int x1)

Sets X coordinate of start point of the line.

Parameters:

x1 - the x coordinate

getX1

public int getX1()

Returns X coordinate of start point of the line.

Returns:

the x coordinate

setX2

public void setX2(int x2)

Sets X coordinate of end point of the line.

Parameters:

x2 - the x coordinate

getX2

public int getX2()

Returns X coordinate of end point of the line.

Returns:

the x coordinate

setY1

public void setY1(int y1)

Sets Y coordinate of start point of the line.

Parameters:

y1 - the y coordinate

getY1

public int getY1()

Returns Y coordinate of start point of the line.

Returns:

the y coordinate

setY2

public void setY2(int y2)

Sets Y coordinate of end point of the line.

Parameters:

y2 - the y coordinate

getY2

public int getY2()

Returns Y coordinate of end point of the line.

Returns:

the y coordinate

setBegin

public void setBegin(int x,
                     int y)

Sets begin point for this line.

Parameters:

x - the x coordinate of the begin point

y - the y coordinate of the begin point

setEnd

public void setEnd(int x,
                   int y)

Sets end point for this line.

Parameters:

x - the x coordinate of the end point

y - the y coordinate of the end point

setLine

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

Sets begin and end points for this line.

Parameters:

x1 - the x coordinate of the begin point

y1 - the y coordinate of the begin point

x2 - the x coordinate of the end point

y2 - the y coordinate of the end point

paintOperation

public void paintOperation(java.awt.Graphics2D graphics)

Performs drawing operation. This implementation invokes graphics.drawLine ().

Specified by:

paintOperation in class GraphicsOperation

Parameters:

graphics - graphics context to use for painting

getBounds

public java.awt.Rectangle getBounds()

Returns bounding box of the element. If the element is unbounded then this method returns null.

Specified by:

getBounds in interface DrawingElement

Overrides:

getBounds in class GraphicsOperation

Returns:

bounding box of the element or null is the element is unbounded

getBounds2D

public java.awt.geom.Rectangle2D getBounds2D()

Returns high precision bounding box of the element. If the element is unbounded then this method returns null.

Specified by:

getBounds2D in interface DrawingElement

Overrides:

getBounds2D in class GraphicsOperation

Returns:

high precision bounding box of the element or null if the element is unbounded

intersects

public boolean intersects(java.awt.geom.Rectangle2D rectangle)

Tests if the element intersects with the given rectangle.

Specified by:

intersects in interface DrawingElement

Overrides:

intersects in class GraphicsOperation

Parameters:

rectangle - rectangle to be checked for intersection

Returns:

true if the element intersects with the given rectangle; false otherwase

getShapeOfOperation

public java.awt.Shape getShapeOfOperation()

Returns shape of the area updated by this operation.

Specified by:

getShapeOfOperation in class GraphicsOperation

Returns:

the shape of updated area

equals

public boolean equals(java.lang.Object object)

Checks whether two draw line operations are equal. The result is true if and only if the argument is not null and is a DrawLine object that has the same attributes as this DrawLine.

Overrides:

equals in class GraphicsOperation

Parameters:

object - the Object to compare with this DrawLine

Returns:

true if the objects are equal; false otherwise.

hashCode

public int hashCode()

Returns the hashcode for this draw line operation.

Overrides:

hashCode in class GraphicsOperation

Returns:

a hash code for this draw line operation.