jfig.commands
Class CreatePolylineCommand

java.lang.Object
  jfig.commands.Command
      jfig.commands.CreatePolylineCommand

All Implemented Interfaces:

java.util.EventListener, java.awt.event.MouseMotionListener

public class CreatePolylineCommand

extends Command

implements java.awt.event.MouseMotionListener

create an open polyline with n points (or a freehand drawn line).

CreatePolylineCommand allows the user to create an open polyline with n points and the current editor attributes. Each "left" mouse click will add another point to the polyline. Use a "middle" click (or "shift"+"left") to finish and create the polyline.

Field Summary

protected GeometryManager	geometryManager
protected int	geometryMode
protected boolean	isFreehandLine
protected int	n_points
protected FigPolyline	polyline

Fields inherited from class jfig.commands.Command

editor, objectCanvas, ready

Constructor Summary

CreatePolylineCommand(FigBasicEditor editor, FigCanvas objectCanvas)

Method Summary

void	cancel() cancel the current editor command
void	execute() execute the current editor command
java.lang.String	getDescription() one-line description of this command
java.awt.Point	getGeometryManagedPoint(java.awt.Point WP) get the (world coordinate) point nearest to target point WP that is compatible with the current GeometryManager mode.
int	getGeometryMode() access the editor geometry mode (if any) via reflection
FigObject[]	getModifiedObjects() return an array-wrapped reference to the polyline object created by this command.
void	mouseDragged(java.awt.event.MouseEvent e)
void	mouseMoved(java.awt.event.MouseEvent e)
void	mousePressed(FigCanvasEvent evt) mousePressed: add new points to the polyline object.
java.lang.String	toString() return a (possibly verbose) description of this Command object
void	undo() undo this command

Methods inherited from class jfig.commands.Command

isReady, message, notifyEditor, statusMessage

Methods inherited from class java.lang.Object

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

Field Detail

isFreehandLine

protected boolean isFreehandLine

n_points

protected int n_points

polyline

protected FigPolyline polyline

geometryManager

protected GeometryManager geometryManager

geometryMode

protected int geometryMode

Constructor Detail

CreatePolylineCommand

public CreatePolylineCommand(FigBasicEditor editor,
                             FigCanvas objectCanvas)

Method Detail

getModifiedObjects

public FigObject[] getModifiedObjects()

return an array-wrapped reference to the polyline object created by this command. The polyline reference may be null.

Overrides:

getModifiedObjects in class Command

execute

public void execute()

Description copied from class: Command

execute the current editor command

This method is empty for class Command.

Overrides:

execute in class Command

cancel

public void cancel()

Description copied from class: Command

cancel the current editor command

cancel and cleanup the current command. Note that this method is empty for class Command, but might be implemented by subclasses.

Overrides:

cancel in class Command

undo

public void undo()

Description copied from class: Command

undo this command

Try to undo this command as far as possible. Don't try to undo() a command that has never been execute()d before. This method is empty for class Command.

Overrides:

undo in class Command

mousePressed

public void mousePressed(FigCanvasEvent evt)

mousePressed: add new points to the polyline object.

Each "left" mouse click will add another point to the polyline. Use a "middle" click (or "shift"+"left") to finish and create the polyline.

Overrides:

mousePressed in class Command

mouseMoved

public void mouseMoved(java.awt.event.MouseEvent e)

Specified by:

mouseMoved in interface java.awt.event.MouseMotionListener

mouseDragged

public void mouseDragged(java.awt.event.MouseEvent e)

Specified by:

mouseDragged in interface java.awt.event.MouseMotionListener

getGeometryMode

public int getGeometryMode()

access the editor geometry mode (if any) via reflection

getGeometryManagedPoint

public java.awt.Point getGeometryManagedPoint(java.awt.Point WP)

get the (world coordinate) point nearest to target point WP that is compatible with the current GeometryManager mode. This method dispatches to GeometryManager.getNearestAllowedPoint(), where the base point is the (so far) end point of our polyline.

getDescription

public java.lang.String getDescription()

Description copied from class: Command

one-line description of this command

return a one-line desription of this command, e.g. to label the undo/redo buttons, if any

Overrides:

getDescription in class Command

toString

public java.lang.String toString()

Description copied from class: Command

return a (possibly verbose) description of this Command object

Overrides:

toString in class Command