com.tensegrity.skeleton.swt.commands
Class SwtZoomGraphDocumentCommand

java.lang.Object
  com.tensegrity.generic.command.BaseCommand
      com.tensegrity.skeleton.commands.CommonBaseCommand
          com.tensegrity.skeleton.commands.DocumentCommand
              com.tensegrity.skeleton.commands.GraphDocumentCommand
                  com.tensegrity.skeleton.swt.commands.SwtZoomGraphDocumentCommand

All Implemented Interfaces:

Command

Direct Known Subclasses:

SwtZoomCommand, SwtZoomGraphCommand

public abstract class SwtZoomGraphDocumentCommand

extends GraphDocumentCommand

The SwtZoomGraphDocumentCommand acts as a base class for all zoom related commands in SWT context. Thus it provides methods to retrieve the current zoom value and setting it.

Version:

$Id: SwtZoomGraphDocumentCommand.java,v 1.3 2005/12/20 14:33:35 ArndHouben Exp $

Author:

S�bastien Guyon

Field Summary

protected boolean	dontUpdate This update flag is required to avoid loops while updating the combobox.
protected static double	MAXIMUM_ZOOM_LIMIT Constants for the zoom limits
protected static double	MINIMUM_ZOOM_LIMIT Constants for the zoom limits
protected int	value the zoom value this command zooms the active graph to.
static Boundary	ZOOM_INSETS Insets to use for zoom to fit

Constructor Summary

SwtZoomGraphDocumentCommand(ApplicationFrame applicationFrame, java.lang.String command)
Constructor for the SwtZoomGraphDocumentCommand.

Method Summary

protected double	getZoom() returns the current zoom value of the graph.
void	setZoom(double zoomvalue) sets the zoom value of the graph view.
protected void	setZoomToFit() sets the zoom value of the graph view to fit all existing items.

Methods inherited from class com.tensegrity.skeleton.commands.GraphDocumentCommand

getGraphDocument, getVisualGraphView, isEnabled

Methods inherited from class com.tensegrity.skeleton.commands.DocumentCommand

getDocument, getGraphApplication, newGraphDocumentFromFactory

Methods inherited from class com.tensegrity.skeleton.commands.CommonBaseCommand

getApplicationFrame, getTitle, perform

Methods inherited from class com.tensegrity.generic.command.BaseCommand

getDescription, getId, getPerformDescription, setEnabled

Methods inherited from class java.lang.Object

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

Field Detail

ZOOM_INSETS

public static final Boundary ZOOM_INSETS

Insets to use for zoom to fit

MINIMUM_ZOOM_LIMIT

protected static final double MINIMUM_ZOOM_LIMIT

Constants for the zoom limits

See Also:

Constant Field Values

MAXIMUM_ZOOM_LIMIT

protected static final double MAXIMUM_ZOOM_LIMIT

Constants for the zoom limits

See Also:

Constant Field Values

value

protected int value

the zoom value this command zooms the active graph to.

dontUpdate

protected boolean dontUpdate

This update flag is required to avoid loops while updating the combobox. Each time the ComboBox sets this flag, the combobox isnt updated. Otherwise the current zoomValue is set onto the combo as well.

Constructor Detail

SwtZoomGraphDocumentCommand

public SwtZoomGraphDocumentCommand(ApplicationFrame applicationFrame,
                                   java.lang.String command)

Constructor for the SwtZoomGraphDocumentCommand.

Parameters:

applicationFrame - Application context for this command.

command - the ID of this command.

Method Detail

getZoom

protected double getZoom()

returns the current zoom value of the graph.

Returns:

double

setZoom

public void setZoom(double zoomvalue)

sets the zoom value of the graph view.

Parameters:

zoomvalue - the value to set the zoom to.

setZoomToFit

protected void setZoomToFit()

sets the zoom value of the graph view to fit all existing items.