hades.gui
Class ZoomRegionCommand

java.lang.Object
  java.util.EventObject
      hades.gui.Command
          hades.gui.ZoomRegionCommand

All Implemented Interfaces:

java.awt.event.ActionListener, java.util.EventListener, FigCanvasListener, java.awt.event.KeyListener, java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.io.Serializable

public class ZoomRegionCommand

extends Command

ZoomRegionCommand - zoom into a specified region

See Also:

Serialized Form

Field Summary

(package private) ObjectCanvas	canvas
(package private) java.awt.Point	P1
(package private) java.awt.Point	P2

Fields inherited from class hades.gui.Command

console, debug, editor, ready, versionString

Fields inherited from class java.util.EventObject

source

Constructor Summary

ZoomRegionCommand(Editor editor)

Method Summary

void	execute() zoom into the region specified by this command.
java.lang.String	getDescription()
void	mousePressed(FigCanvasEvent ME) extract the screen and world coordinates of this Event, and dispatch to setPosition().
void	setPosition(java.awt.Point SP, java.awt.Point WP) this method should be called twice for a move command.
java.lang.String	toString() toString(): identify this ZoomRegionCommand
void	undo() no use trying to undo a zoom command.

Methods inherited from class hades.gui.Command

actionPerformed, cancel, dbg, getLogExtraArguments, initialize, isReady, keyPressed, keyReleased, keyTyped, message, mouseClicked, mouseDragged, mouseEntered, mouseExited, mouseMoved, mousePressed, mouseReleased, statusMessage, writePositionLogMessage

Methods inherited from class java.util.EventObject

getSource

Methods inherited from class java.lang.Object

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

Field Detail

P1

java.awt.Point P1

P2

java.awt.Point P2

canvas

ObjectCanvas canvas

Constructor Detail

ZoomRegionCommand

public ZoomRegionCommand(Editor editor)

Method Detail

execute

public void execute()

zoom into the region specified by this command. We won't register the zoom command with the UndoStack.

Overrides:

execute in class Command

undo

public void undo()

no use trying to undo a zoom command. Just ignore it.

Overrides:

undo in class Command

mousePressed

public void mousePressed(FigCanvasEvent ME)

extract the screen and world coordinates of this Event, and dispatch to setPosition().

Specified by:

mousePressed in interface FigCanvasListener

Overrides:

mousePressed in class Command

setPosition

public void setPosition(java.awt.Point SP,
                        java.awt.Point WP)

this method should be called twice for a move command. At the first call, we expect the old position of the object to be moved, and on the second call its target position.

Overrides:

setPosition in class Command

toString

public java.lang.String toString()

toString(): identify this ZoomRegionCommand

Overrides:

toString in class Command

getDescription

public java.lang.String getDescription()

Overrides:

getDescription in class Command