ptolemy.domains.gr.lib
Class ViewScreen2D.ViewScreen2DListener

java.lang.Object
  ptolemy.domains.gr.lib.ViewScreen2D.ViewScreen2DListener

All Implemented Interfaces:

LayerListener, LayerMotionListener, java.awt.event.KeyListener, java.util.EventListener

Enclosing class:

ViewScreen2D

public class ViewScreen2D.ViewScreen2DListener
extends java.lang.Object
implements LayerListener, LayerMotionListener, java.awt.event.KeyListener

Listen for Layer, LayerMotion and Key events.

Field Summary

private boolean	_mouseDragging
private boolean	_mouseInWindow

Constructor Summary

ViewScreen2D.ViewScreen2DListener()

Method Summary

void	keyPressed(java.awt.event.KeyEvent e) Forward any keyPressed events to the figure which is selected in the viewscreen.
void	keyReleased(java.awt.event.KeyEvent e) Forward any keyReleased events to the figure which is selected in the viewscreen.
void	keyTyped(java.awt.event.KeyEvent e) Forward any keyTyped events to the figure which is selected in the viewscreen.
void	mouseClicked(LayerEvent e) Included to comply with the LayerListener interface requirements.
void	mouseDragged(LayerEvent e) Translate the origin of the viewScreen2D if the user drags the origin marker.
void	mouseEntered(LayerEvent e) Update the state of this object to reflect that the mouse is in the viewscreen.
void	mouseExited(LayerEvent e) Update the state of this object to reflect that the mouse is no longer in the viewscreen.
void	mouseMoved(LayerEvent e) Included to comply with the LayerMotionListener interface requirement.
void	mousePressed(LayerEvent e) Update the status of any figures which were deselected by the user clicking on a blank area of the viewscreen.
void	mouseReleased(LayerEvent e) Update the state of this object to reflect that the mouse is no longer being dragged.

Methods inherited from class java.lang.Object

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

Field Detail

_mouseDragging

private boolean _mouseDragging

_mouseInWindow

private boolean _mouseInWindow

Constructor Detail

ViewScreen2D.ViewScreen2DListener

public ViewScreen2D.ViewScreen2DListener()

Method Detail

keyPressed

public void keyPressed(java.awt.event.KeyEvent e)

Forward any keyPressed events to the figure which is selected in the viewscreen. Allow the origin of the viewscreen to be translated if the user holds the 'o' key.

Specified by:

keyPressed in interface java.awt.event.KeyListener

Parameters:

e - The KeyEvent generated by the frame containing the viewscreen.

keyReleased

public void keyReleased(java.awt.event.KeyEvent e)

Forward any keyReleased events to the figure which is selected in the viewscreen. Disable relocation of the origin of the viewscreen if the user releases the 'o' key.

Specified by:

keyReleased in interface java.awt.event.KeyListener

Parameters:

e - The KeyEvent generated by the frame containing the viewscreen.

keyTyped

public void keyTyped(java.awt.event.KeyEvent e)

Forward any keyTyped events to the figure which is selected in the viewscreen. If no figure is selected, this method does nothing.

Specified by:

keyTyped in interface java.awt.event.KeyListener

Parameters:

e - The KeyEvent generated by the frame containing the viewscreen.

mouseClicked

public void mouseClicked(LayerEvent e)

Included to comply with the LayerListener interface requirements. This method does nothing in its current implementation.

Specified by:

mouseClicked in interface LayerListener

Parameters:

e - The layer event generated by the informing layer.

mouseDragged

public void mouseDragged(LayerEvent e)

Translate the origin of the viewScreen2D if the user drags the origin marker. To enable this function, the user must hold the 'o' key while dragging the origin marker.

Specified by:

mouseDragged in interface LayerListener

Parameters:

e - The layer event generated by the informing layer.

mouseEntered

public void mouseEntered(LayerEvent e)

Update the state of this object to reflect that the mouse is in the viewscreen.

Specified by:

mouseEntered in interface LayerMotionListener

Parameters:

e - The layer event generated by the informing layer.

mouseExited

public void mouseExited(LayerEvent e)

Update the state of this object to reflect that the mouse is no longer in the viewscreen.

Specified by:

mouseExited in interface LayerMotionListener

mouseMoved

public void mouseMoved(LayerEvent e)

Included to comply with the LayerMotionListener interface requirement. This method does nothing in its current implementation.

Specified by:

mouseMoved in interface LayerMotionListener

Parameters:

e - The layer event generated by the informing layer.

mousePressed

public void mousePressed(LayerEvent e)

Update the status of any figures which were deselected by the user clicking on a blank area of the viewscreen.

Specified by:

mousePressed in interface LayerListener

Parameters:

e - The layer event generated by the informing layer.

mouseReleased

public void mouseReleased(LayerEvent e)

Update the state of this object to reflect that the mouse is no longer being dragged.

Specified by:

mouseReleased in interface LayerListener

Parameters:

e - The layer event generated by the informing layer.