jfig.commands
Class ConvertObjectCommand

java.lang.Object
  jfig.commands.Command
      jfig.commands.ConvertObjectCommand

public class ConvertObjectCommand

extends Command

convert object type but keep coordintates.

ConvertObjectCommand allows the user to toggle the object type of rectangles and polylines while keeping the coordinates. The command implements the corresponding xfig function,

• toggle rectangle and rounded rectangle,
• convert polyline into spline, spline into bezier spline, bezier spline into polyline.

Note that FIG arcs (3-points) are not transformed.

Field Summary

protected FigAttribs	attribs
protected int	n_points
protected FigObject	newObject
protected FigObject	object
protected FigTrafo2D	trafo

Fields inherited from class jfig.commands.Command

editor, objectCanvas, ready

Constructor Summary

ConvertObjectCommand(FigBasicEditor editor, FigCanvas objectCanvas)

Method Summary

void	execute() execute the current editor command This method is empty for class Command.
java.lang.String	getDescription() one-line description of this command return a one-line desription of this command, e.g. to label the undo/redo buttons, if any
FigObject[]	getModifiedObjects() returns an FigObject array of length 2 with the following entries: the object at index 0 is the original, unmodified object (or null), the object at index 1 is the converted object (or null).
void	mousePressed(FigCanvasEvent evt) react to a mouse click on the editor canvas This method provides the central callback from the editor to its current command object.
java.lang.String	toString() return a (possibly verbose) description of this Command object
void	undo() undo this command Try to undo this command as far as possible.

Methods inherited from class jfig.commands.Command

cancel, isReady, message, notifyEditor, statusMessage

Methods inherited from class java.lang.Object

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

Field Detail

object

protected FigObject object

newObject

protected FigObject newObject

attribs

protected FigAttribs attribs

trafo

protected FigTrafo2D trafo

n_points

protected int n_points

Constructor Detail

ConvertObjectCommand

public ConvertObjectCommand(FigBasicEditor editor,
                            FigCanvas objectCanvas)

Method Detail

getModifiedObjects

public FigObject[] getModifiedObjects()

returns an FigObject array of length 2 with the following entries: the object at index 0 is the original, unmodified object (or null), the object at index 1 is the converted object (or 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

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)

Description copied from class: Command

react to a mouse click on the editor canvas

This method provides the central callback from the editor to its current command object. Passing a FigCanvasEvent parameter, the editor provides information both about the screen coordinates and the world coordinates of the mouse event.

Naturally, mouse presses are ignored for class Command.

Overrides:

mousePressed in class Command

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