edu.umd.cs.piccolox.pswing
Class PSwingMouseWheelEvent

java.lang.Object
  java.util.EventObject
      java.awt.AWTEvent
          java.awt.event.ComponentEvent
              java.awt.event.InputEvent
                  java.awt.event.MouseEvent
                      java.awt.event.MouseWheelEvent
                          edu.umd.cs.piccolox.pswing.PSwingMouseWheelEvent

All Implemented Interfaces:

PSwingEvent, java.io.Serializable

public class PSwingMouseWheelEvent
extends java.awt.event.MouseWheelEvent
implements PSwingEvent

PMouseMotionEvent is an event which indicates that a mouse motion action occurred in a node.

This low-level event is generated by a node object for:

• Mouse Motion Events
  • the mouse is moved
  • the mouse is dragged

A PMouseEvent object is passed to every PMouseMotionListener or PMouseMotionAdapter object which registered to receive mouse motion events using the component's addMouseMotionListener method. (PMouseMotionAdapter objects implement the PMouseMotionListener interface.) Each such listener object gets a PMouseEvent containing the mouse motion event.

Warning: Serialized objects of this class will not be compatible with future Piccolo releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Piccolo. A future release of Piccolo will provide support for long term persistence.

Author:

Benjamin B. Bederson, Sam R. Reid, Lance E. Good

See Also:

Serialized Form

Field Summary

Fields inherited from class java.awt.event.MouseWheelEvent

WHEEL_BLOCK_SCROLL, WHEEL_UNIT_SCROLL

Fields inherited from class java.awt.event.MouseEvent

BUTTON1, BUTTON2, BUTTON3, MOUSE_CLICKED, MOUSE_DRAGGED, MOUSE_ENTERED, MOUSE_EXITED, MOUSE_FIRST, MOUSE_LAST, MOUSE_MOVED, MOUSE_PRESSED, MOUSE_RELEASED, MOUSE_WHEEL, NOBUTTON

Fields inherited from class java.awt.event.InputEvent

ALT_DOWN_MASK, ALT_GRAPH_DOWN_MASK, ALT_GRAPH_MASK, ALT_MASK, BUTTON1_DOWN_MASK, BUTTON1_MASK, BUTTON2_DOWN_MASK, BUTTON2_MASK, BUTTON3_DOWN_MASK, BUTTON3_MASK, CTRL_DOWN_MASK, CTRL_MASK, META_DOWN_MASK, META_MASK, SHIFT_DOWN_MASK, SHIFT_MASK

Fields inherited from class java.awt.event.ComponentEvent

COMPONENT_FIRST, COMPONENT_HIDDEN, COMPONENT_LAST, COMPONENT_MOVED, COMPONENT_RESIZED, COMPONENT_SHOWN

Fields inherited from class java.awt.AWTEvent

ACTION_EVENT_MASK, ADJUSTMENT_EVENT_MASK, COMPONENT_EVENT_MASK, consumed, CONTAINER_EVENT_MASK, FOCUS_EVENT_MASK, HIERARCHY_BOUNDS_EVENT_MASK, HIERARCHY_EVENT_MASK, INPUT_METHOD_EVENT_MASK, INVOCATION_EVENT_MASK, ITEM_EVENT_MASK, KEY_EVENT_MASK, MOUSE_EVENT_MASK, MOUSE_MOTION_EVENT_MASK, MOUSE_WHEEL_EVENT_MASK, PAINT_EVENT_MASK, RESERVED_ID_MAX, TEXT_EVENT_MASK, WINDOW_EVENT_MASK, WINDOW_FOCUS_EVENT_MASK, WINDOW_STATE_EVENT_MASK

Fields inherited from class java.util.EventObject

source

Constructor Summary

protected

PSwingMouseWheelEvent(int id, java.awt.event.MouseWheelEvent e, edu.umd.cs.piccolo.event.PInputEvent event) Constructs a new PMouseWheel event from a Java MouseWheelEvent.

Method Summary

java.awt.event.MouseEvent	asMouseEvent() Returns this event as a mouse event.
void	dispatchTo(java.lang.Object listener) Calls appropriate method on the listener based on this events ID.
edu.umd.cs.piccolo.PNode	getCurrentNode() Get the current node that is under the cursor.
edu.umd.cs.piccolo.util.PPickPath	getCurrentPath() Get the path from the PCanvas down to the visual component currently under the mouse.This may give a different result then getGrabPath() durring a MOUSE_DRAGGED or MOUSE_RELEASED operation.
edu.umd.cs.piccolo.PNode	getGrabNode() Determine the node the event originated at.
edu.umd.cs.piccolo.util.PPickPath	getGrabPath() Return the path from the PCanvas down to the currently grabbed object.
int	getID() Determine the event type.
java.awt.geom.Point2D	getLocalPoint() Returns the x,y position of the event in the local coordinate system of the node the event occurred on.
double	getLocalX() Returns the horizontal x position of the event in the local coordinate system of the node the event occurred on.
double	getLocalY() Returns the vertical y position of the event in the local coordinate system of the node the event occurred on.
edu.umd.cs.piccolo.PNode	getNode() Determine the node the event originated at.
edu.umd.cs.piccolo.util.PPickPath	getPath() Determine the path the event took from the PCanvas down to the visual component.
void	setSource(java.lang.Object aSource) Set the souce of this event.

Methods inherited from class java.awt.event.MouseWheelEvent

getScrollAmount, getScrollType, getUnitsToScroll, getWheelRotation, paramString

Methods inherited from class java.awt.event.MouseEvent

getButton, getClickCount, getLocationOnScreen, getMouseModifiersText, getPoint, getX, getXOnScreen, getY, getYOnScreen, isPopupTrigger, translatePoint

Methods inherited from class java.awt.event.InputEvent

consume, getModifiers, getModifiersEx, getModifiersExText, getWhen, isAltDown, isAltGraphDown, isConsumed, isControlDown, isMetaDown, isShiftDown

Methods inherited from class java.awt.event.ComponentEvent

getComponent

Methods inherited from class java.awt.AWTEvent

toString

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

Constructor Detail

PSwingMouseWheelEvent

protected PSwingMouseWheelEvent(int id,
                                java.awt.event.MouseWheelEvent e,
                                edu.umd.cs.piccolo.event.PInputEvent event)

Constructs a new PMouseWheel event from a Java MouseWheelEvent.

Parameters:

id - The event type (MOUSE_WHEEL)

e - The original Java mouse wheel event.

Method Detail

getLocalPoint

public java.awt.geom.Point2D getLocalPoint()

Returns the x,y position of the event in the local coordinate system of the node the event occurred on.

Specified by:

getLocalPoint in interface PSwingEvent

Returns:

a Point2D object containing the x and y coordinates local to the node.

getLocalX

public double getLocalX()

Returns the horizontal x position of the event in the local coordinate system of the node the event occurred on.

Specified by:

getLocalX in interface PSwingEvent

Returns:

x a double indicating horizontal position local to the node.

getLocalY

public double getLocalY()

Returns the vertical y position of the event in the local coordinate system of the node the event occurred on.

Specified by:

getLocalY in interface PSwingEvent

Returns:

y a double indicating vertical position local to the node.

getID

public int getID()

Determine the event type.

Specified by:

getID in interface PSwingEvent

Overrides:

getID in class java.awt.AWTEvent

Returns:

the id

getNode

public edu.umd.cs.piccolo.PNode getNode()

Determine the node the event originated at. If an event percolates up the tree and is handled by an event listener higher up in the tree than the original node that generated the event, this returns the original node. For mouse drag and release events, this is the node that the original matching press event went to - in other words, the event is 'grabbed' by the originating node.

Specified by:

getNode in interface PSwingEvent

Returns:

the node

getPath

public edu.umd.cs.piccolo.util.PPickPath getPath()

Determine the path the event took from the PCanvas down to the visual component.

Specified by:

getPath in interface PSwingEvent

Returns:

the path

getGrabNode

public edu.umd.cs.piccolo.PNode getGrabNode()

Determine the node the event originated at. If an event percolates up the tree and is handled by an event listener higher up in the tree than the original node that generated the event, this returns the original node. For mouse drag and release events, this is the node that the original matching press event went to - in other words, the event is 'grabbed' by the originating node.

Specified by:

getGrabNode in interface PSwingEvent

Returns:

the node

getGrabPath

public edu.umd.cs.piccolo.util.PPickPath getGrabPath()

Return the path from the PCanvas down to the currently grabbed object.

Specified by:

getGrabPath in interface PSwingEvent

Returns:

the path

getCurrentNode

public edu.umd.cs.piccolo.PNode getCurrentNode()

Get the current node that is under the cursor. This may return a different result then getGrabNode() when in a MOUSE_RELEASED or MOUSE_DRAGGED event.

Specified by:

getCurrentNode in interface PSwingEvent

Returns:

the current node.

getCurrentPath

public edu.umd.cs.piccolo.util.PPickPath getCurrentPath()

Get the path from the PCanvas down to the visual component currently under the mouse.This may give a different result then getGrabPath() durring a MOUSE_DRAGGED or MOUSE_RELEASED operation.

Specified by:

getCurrentPath in interface PSwingEvent

Returns:

the current path.

dispatchTo

public void dispatchTo(java.lang.Object listener)

Calls appropriate method on the listener based on this events ID.

Specified by:

dispatchTo in interface PSwingEvent

Parameters:

listener - the target for dispatch.

setSource

public void setSource(java.lang.Object aSource)

Set the souce of this event. As the event is fired up the tree the source of the event will keep changing to reflect the scenegraph object that is firing the event.

Specified by:

setSource in interface PSwingEvent

Overrides:

setSource in class java.awt.AWTEvent

Parameters:

aSource -

asMouseEvent

public java.awt.event.MouseEvent asMouseEvent()

Returns this event as a mouse event. This reduces the need to cast instances of this interface when they are known to all extend MouseEvent.

Specified by:

asMouseEvent in interface PSwingEvent

Returns:

this object casted to a MouseEvent