org.simbrain.network.gui

Class DragEventHandler

java.lang.Object

org.piccolo2d.event.PBasicInputEventHandler

org.piccolo2d.event.PDragSequenceEventHandler

org.simbrain.network.gui.DragEventHandler

All Implemented Interfaces:

java.util.EventListener, org.piccolo2d.event.PInputEventListener

final class DragEventHandler
extends org.piccolo2d.event.PDragSequenceEventHandler

Handle simbrain drag events, which pan the canvas, create lassos for selection. handles selection an, toggle selection, drags objects as appropriate, updates relevant graphics parameters like "last clicked position". Coding this properly requires tracking picked nodes and their parents fairly closely. To see the scene graph hierarchy for debugging this use ctrl-c while a network panel is open.

Author:

Michael Heuer, Jeff Yoshimi

Constructor Summary

Constructors

Constructor and Description
DragEventHandler(NetworkPanel networkPanel) Create a new selection event handler.

Method Summary

Modifier and Type	Method and Description
protected void	drag(org.piccolo2d.event.PInputEvent event)
protected void	endDrag(org.piccolo2d.event.PInputEvent event)
void	mouseClicked(org.piccolo2d.event.PInputEvent event)
void	mousePressed(org.piccolo2d.event.PInputEvent event)
protected void	pan(org.piccolo2d.event.PInputEvent event) Pans the camera in response to the pan event provided.
protected void	startDrag(org.piccolo2d.event.PInputEvent event)

Methods inherited from class org.piccolo2d.event.PDragSequenceEventHandler

dragActivityFinalStep, dragActivityFirstStep, dragActivityStep, getDragActivity, getMinDragStartDistance, getMousePressedCanvasPoint, isDragging, mouseDragged, mouseReleased, setIsDragging, setMinDragStartDistance, shouldStartDragInteraction, startDragActivity, stopDragActivity

Methods inherited from class org.piccolo2d.event.PBasicInputEventHandler

acceptsEvent, getEventFilter, keyboardFocusGained, keyboardFocusLost, keyPressed, keyReleased, keyTyped, mouseEntered, mouseExited, mouseMoved, mouseWheelRotated, mouseWheelRotatedByBlock, processEvent, setEventFilter

Methods inherited from class java.lang.Object

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

Constructor Detail

DragEventHandler

public DragEventHandler(NetworkPanel networkPanel)

Create a new selection event handler.

Parameters:

networkPanel - parent panel

Method Detail

mousePressed

public void mousePressed(org.piccolo2d.event.PInputEvent event)

Overrides:

mousePressed in class org.piccolo2d.event.PDragSequenceEventHandler

mouseClicked

public void mouseClicked(org.piccolo2d.event.PInputEvent event)

Overrides:

mouseClicked in class org.piccolo2d.event.PBasicInputEventHandler

startDrag

protected void startDrag(org.piccolo2d.event.PInputEvent event)

Overrides:

startDrag in class org.piccolo2d.event.PDragSequenceEventHandler

drag

protected void drag(org.piccolo2d.event.PInputEvent event)

Overrides:

drag in class org.piccolo2d.event.PDragSequenceEventHandler

endDrag

protected void endDrag(org.piccolo2d.event.PInputEvent event)

Overrides:

endDrag in class org.piccolo2d.event.PDragSequenceEventHandler

pan

protected void pan(org.piccolo2d.event.PInputEvent event)

Pans the camera in response to the pan event provided. (From the source code for PanEventHandler. Note that "autopan"--from that class--is not being used. Not sure what is being lost by not using it.)

Parameters:

event - contains details about the drag used to translate the view