Module org.jhotdraw8.draw

Package org.jhotdraw8.draw.handle

Class BezierNodeTangentHandle

java.lang.Object

org.jhotdraw8.draw.handle.AbstractHandle

org.jhotdraw8.draw.handle.BezierNodeTangentHandle

All Implemented Interfaces:

Handle

public class BezierNodeTangentHandle
extends AbstractHandle

Handle for the point ofCollection a figure.

Author:

Werner Randelshofer

Field Summary

Fields inherited from class org.jhotdraw8.draw.handle.AbstractHandle

owner

Constructor Summary

Constructors

Constructor	Description
BezierNodeTangentHandle(Figure figure, MapAccessor<BezierPath> pathKey, int pointIndex)

Method Summary

Modifier and Type	Method	Description
boolean	contains(DrawingView drawingView, double x, double y, double tolerance)	Whether the user picked the handle.
@Nullable javafx.scene.Cursor	getCursor()	The cursor that should be shown when the mouse hovers over a selectable handle.
javafx.geometry.Point2D	getLocationInView()
javafx.scene.shape.Polyline	getNode(DrawingView view)	Returns the node which is used to visualize the handle.
boolean	isSelectable()	Whether the handle is selectable.
void	updateNode(DrawingView view)	Updates the node.

Methods inherited from class org.jhotdraw8.draw.handle.AbstractHandle

dispose, getOwner, isCompatible

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jhotdraw8.draw.handle.Handle

isEditable, onKeyPressed, onKeyReleased, onKeyTyped, onMouseClicked, onMouseDragged, onMousePressed, onMouseReleased

Constructor Details

BezierNodeTangentHandle

public BezierNodeTangentHandle(Figure figure,
 MapAccessor<BezierPath> pathKey,
 int pointIndex)

Method Details

contains

public boolean contains(DrawingView drawingView,
 double x,
 double y,
 double tolerance)

Description copied from interface: Handle

Whether the user picked the handle.

Parameters:

drawingView - the drawing view

x - the point

y - the point

tolerance - the tolerance (radius around the point)

Returns:

true if we picked the handle

getCursor

public @Nullable javafx.scene.Cursor getCursor()

Description copied from interface: Handle

The cursor that should be shown when the mouse hovers over a selectable handle. Non-selectable handles should return null.

Returns:

the cursor

getLocationInView

public javafx.geometry.Point2D getLocationInView()

getNode

public javafx.scene.shape.Polyline getNode(DrawingView view)

Description copied from interface: Handle

Returns the node which is used to visualize the handle. The node is rendered by DrawingView in a pane which uses view coordinates. The node should use DrawingView.viewToDrawingProperty() to transform its coordinates.

A Handle can only reside in one DrawingView at any given time. The JavaFX node returned by this method is use to render the handle in the DrawingView. This is why, unlike Figure, we only need this method instead of a createNode and an updateNode method.

A HandleTracker will use the Node.accessibleTextProperty() and Node.accessibleHelpProperty() to provide a help text to the user.

Parameters:

view - the drawing view

Returns:

the node

isSelectable

public boolean isSelectable()

Description copied from interface: Handle

Whether the handle is selectable.

Returns:

true if selectable

updateNode

public void updateNode(DrawingView view)

Description copied from interface: Handle

Updates the node.

Parameters:

view - the drawing view