com.klg.jclass.chart3d.j2d.actions
Class ScaleAction

java.lang.Object
  |
  +--com.klg.jclass.chart3d.j2d.actions.BaseAction
        |
        +--com.klg.jclass.chart3d.j2d.actions.ScaleAction

All Implemented Interfaces:

JCAction, Serializable

public class ScaleAction

extends BaseAction

Handler object for scale actions within JClass Chart 3D Java2D. When a scale action is started, JCChart3dArea will create an instance of ScaleAction and call start(), animate() and end() at appropriate points. A mapping from event to action type is stored the chart's JCActionTable.

See Also:

JCAction, JCActionTable, BaseAction, Serialized Form

Field Summary

protected Point	first Point at which the scale action started
protected double	horizontalShift The current horizontal shift value for this action
protected Point	last Last point used to do scaling
protected double	origHorizontalShift The original horizontal shift value in case this action is cancelled
protected double	origScale The original scale value in case this action is cancelled
protected double	origVerticalShift The original vertical shift in case this action is cancelled
protected double	scale The current scale value for this action
protected double	verticalShift The current vertical shift value for this action

Fields inherited from class com.klg.jclass.chart3d.j2d.actions.BaseAction

ANIMATING, chart3dArea, enabled, NONE, START, status

Constructor Summary

ScaleAction()
Default constructor

Method Summary

void	animate(InputEvent event, int x, int y) Called by JCChart3dArea when the action is to be animated.
void	cancel() Called by JCChart3dArea when the action is cancelled
void	end(InputEvent event, int x, int y) Called by JCChar3dArea when the action is over.
void	reanimate(int x, int y) Called by JCChart3dArea when the chart area has been refreshed and the animation must be redrawn.
void	start(InputEvent event, int x, int y) Called by JCChart3dArea when the action is started.

Methods inherited from class com.klg.jclass.chart3d.j2d.actions.BaseAction

drawPreview, getChart3d, getChart3dArea, initialize, isEnabled, setChart3dArea, setEnabled

Methods inherited from class java.lang.Object

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

Field Detail

first

protected Point first

Point at which the scale action started

last

protected Point last

Last point used to do scaling

scale

protected double scale

The current scale value for this action

horizontalShift

protected double horizontalShift

The current horizontal shift value for this action

verticalShift

protected double verticalShift

The current vertical shift value for this action

origScale

protected double origScale

The original scale value in case this action is cancelled

origHorizontalShift

protected double origHorizontalShift

The original horizontal shift value in case this action is cancelled

origVerticalShift

protected double origVerticalShift

The original vertical shift in case this action is cancelled

Constructor Detail

ScaleAction

public ScaleAction()

Default constructor

Method Detail

start

public void start(InputEvent event,
                  int x,
                  int y)

Called by JCChart3dArea when the action is started. For the scale action, this method saves the start point as the anchor for the scale rectangle.

Specified by:

start in interface JCAction

Specified by:

start in class BaseAction

Parameters:

event - The InputEvent that triggered this action

x - The x pixel position where scaling is starting

y - The y pixel position where scaling is starting

animate

public void animate(InputEvent event,
                    int x,
                    int y)

Called by JCChart3dArea when the action is to be animated. For the scale action, the user can control the size of the plotCube view mouse actions.

Specified by:

animate in interface JCAction

Specified by:

animate in class BaseAction

Parameters:

event - The InputEvent that triggered this action

x - The x pixel position where animation is happening

y - The y pixel position where animation is happening

reanimate

public void reanimate(int x,
                      int y)

Called by JCChart3dArea when the chart area has been refreshed and the animation must be redrawn.

Specified by:

reanimate in interface JCAction

Specified by:

reanimate in class BaseAction

Parameters:

x - The x pixel position where reanimation is happening

y - The y pixel position where reanimation is happening

end

public void end(InputEvent event,
                int x,
                int y)

Called by JCChar3dArea when the action is over. For the scale action, this method takes the start point and the current point and uses them to scale along the horizontal and vertical action axes.

Specified by:

end in interface JCAction

Specified by:

end in class BaseAction

Parameters:

x - The x pixel position where the user finished scaling

y - The y pixel position where the user finished scaling

event - The event for the action

cancel

public void cancel()

Called by JCChart3dArea when the action is cancelled

Specified by:

cancel in interface JCAction

Specified by:

cancel in class BaseAction