diva.whiteboard

Class HighlightInterpreter

java.lang.Object

diva.canvas.interactor.AbstractInteractor

diva.sketch.BasicInterpreter

diva.whiteboard.HighlightInterpreter

All Implemented Interfaces:

LayerListener, LayerMotionListener, Interactor, EventListener

public class HighlightInterpreter
extends BasicInterpreter

This interpreter highlights, meaning that it puts ink at the back of the drawing rather than at the front.

Version:

$Revision: 1.5 $

Author:

Michael Shilman (michaels@eecs.berkeley.edu)

Field Summary

Fields inherited from class diva.sketch.BasicInterpreter

_controller, _curStroke, _curSymbol, _strokeBuffer

Constructor Summary

Constructors

Constructor and Description
HighlightInterpreter(SketchController c) Create a HighlightInterpreter which is used by the specified controller to interpret sketch input.

Method Summary

Modifier and Type	Method and Description
protected void	appendStroke(LayerEvent e) Append the given new point/timestamp to the current stroke.
protected void	finishStroke(LayerEvent e) Called at the end of the mouseReleased method to finish the drawing of a stroke.
protected void	startStroke(LayerEvent e) This method is invoked upon mouse down.

Methods inherited from class diva.sketch.BasicInterpreter

getController, getCurrentStroke, getCurrentSymbol, isMotionEnabled, mouseDragged, mouseEntered, mouseExited, mouseMoved, mousePressed, mouseReleased, removeCurrentSymbol

Methods inherited from class diva.canvas.interactor.AbstractInteractor

accept, getMouseFilter, isConsuming, isEnabled, mouseClicked, setConsuming, setEnabled, setMotionEnabled, setMouseFilter

Methods inherited from class java.lang.Object

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

Constructor Detail

HighlightInterpreter

public HighlightInterpreter(SketchController c)

Create a HighlightInterpreter which is used by the specified controller to interpret sketch input.

Method Detail

appendStroke

protected final void appendStroke(LayerEvent e)

Append the given new point/timestamp to the current stroke. Consume the event when done.

Overrides:

appendStroke in class BasicInterpreter

finishStroke

protected final void finishStroke(LayerEvent e)

Called at the end of the mouseReleased method to finish the drawing of a stroke.

Overrides:

finishStroke in class BasicInterpreter

startStroke

protected final void startStroke(LayerEvent e)

Description copied from class: BasicInterpreter

This method is invoked upon mouse down. Reset the _strokeBuffer to clear the previou stroke. Set the current stroke (_curStroke) to point to the stroke buffer, and instantiate a StrokeSymbol (_curSymbol) that paints the stroke with outline/fill color and line width specified in the controller. If a SketchPane is used, get the SketchLayer and call startStroke, this will set the starting point of the line segment to be drawn. SketchLayer will take care of drawing the last line segment in the current stroke, the prior segments stay on the canvas, they are not being rerendered. If a SketchPane is not being used, then add _curSymbol to the sketch model so that it can be rendered ('cause there will be no SketchLayer).

Overrides:

startStroke in class BasicInterpreter