com.rolemodelsoft.drawlet.basics
Class SquareCanvasHandle

java.lang.Object
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  +--com.rolemodelsoft.drawlet.basics.AbstractInputEventHandler
        |
        +--com.rolemodelsoft.drawlet.basics.CanvasHandle
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              +--com.rolemodelsoft.drawlet.basics.SquareCanvasHandle

Direct Known Subclasses:

BoundsHandle, ConnectedLineCreationHandle, LinePointHandle, PolygonPointHandle

public abstract class SquareCanvasHandle

extends CanvasHandle

Since many handles will be simple small squares (probably appearing on a DrawingCanvas), this abstract class offers a simple base for handles which appear this way. All subclasses need to provide, at a minimum, are the coordinates for the center of the square via: centerX() centerY()

Fields inherited from class com.rolemodelsoft.drawlet.basics.CanvasHandle

canvas, halfWidth, HANDLE_SIZE, previousTool

Constructor Summary

SquareCanvasHandle()

Method Summary

protected abstract int	centerX() Answer the x coordinate at the center of the handle.
protected abstract int	centerY() Answer the y coordinate at the center of the handle.
java.awt.Rectangle	getBounds() Returns the current bounds of this handle.
void	paint(java.awt.Graphics g) Paints the handle.

Methods inherited from class com.rolemodelsoft.drawlet.basics.CanvasHandle

contains, defaultHandleSize, finished, getHandleHeight, getHandleSize, getHandleWidth, getX, getY, intersects, mouseReleased, releaseControl, setHandleSize, takeControl

Methods inherited from class com.rolemodelsoft.drawlet.basics.AbstractInputEventHandler

keyPressed, keyReleased, keyTyped, mouseClicked, mouseDoubleClicked, mouseDragged, mouseEntered, mouseExited, mouseMoved, mousePressed, mouseSingleClicked

Methods inherited from class java.lang.Object

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

Constructor Detail

SquareCanvasHandle

public SquareCanvasHandle()

Method Detail

centerX

protected abstract int centerX()

Answer the x coordinate at the center of the handle.

Returns:

an integer representing the x coordinate in the center of the handle

centerY

protected abstract int centerY()

Answer the y coordinate at the center of the handle.

Returns:

an integer representing the y coordinate in the center of the handle

getBounds

public java.awt.Rectangle getBounds()

Returns the current bounds of this handle.

Overrides:

getBounds in class CanvasHandle

Returns:

a Rectangle representing the current bounds of this handle

paint

public void paint(java.awt.Graphics g)

Paints the handle.

Overrides:

paint in class CanvasHandle

Parameters:

g - the specified Graphics window