jpicedt.graphic.view
Class ArrowView

java.lang.Object
  jpicedt.graphic.view.ArrowView

Direct Known Subclasses:

ArrowView.CircleCentered, ArrowView.CircleFlushed, ArrowView.DiskCentered, ArrowView.DiskFlushed, ArrowView.DoubleHead, ArrowView.DoubleReverseHead, ArrowView.Head, ArrowView.ReverseHead, ArrowView.RoundedBracket, ArrowView.SquareBracket, ArrowView.TBarCentered, ArrowView.TBarFlushed

public abstract class ArrowView
extends Object

A class implementing a view for the arrow attribute. A syncAttributes() method allows for synchronizing the current attribute set with the arrow parameters used by the paint() method.

This class is also a container for predefined arrows (implemented as static inner classes).

Since:

jPicEdt 1.5

Version:

$Id: ArrowView.java,v 1.8 2013/03/27 06:55:16 vincentb1 Exp $

Author:

Sylvain Reynal

Nested Class Summary

static class	ArrowView.CircleCentered
static class	ArrowView.CircleFlushed
static class	ArrowView.Direction
static class	ArrowView.DiskCentered
static class	ArrowView.DiskFlushed
static class	ArrowView.DoubleHead
static class	ArrowView.DoubleReverseHead
static class	ArrowView.Head
static class	ArrowView.Pencil
static class	ArrowView.ReverseHead
static class	ArrowView.RoundedBracket
static class	ArrowView.SquareBracket
static class	ArrowView.TBarCentered
static class	ArrowView.TBarFlushed

Field Summary

protected double	globalScaleLength
protected double	globalScaleWidth
protected float	lineWidth

Constructor Summary

ArrowView(PicAttributeSet set)
Configure the parameters of this arrow (size, scale, inset, ...) from the given attribute set, aka view/model synchronization.

Method Summary

static Map<StyleConstants.ArrowStyle,ImageIcon>	createArrowIcons(ArrowView.Direction direction) build icons for e.g.
static ArrowView	createArrowView(StyleConstants.ArrowStyle arrow, PicAttributeSet set) Return a View for the given arrow style.
abstract ArrowView.Pencil	getPencil() whether we call g.draw() or g.fill()
abstract Shape	getShape()
static void	main(String[] arg)
void	paint(Graphics2D g) Paints this arrow.
void	paint(Graphics2D g, double locX, double locY, PicVector dir) Updates then paints this arrow.
void	paint(Graphics2D g, PicPoint loc, PicVector dir) Updates then paints this arrow.
abstract void	updateShape(double locX, double locY, PicVector dir) To be called when the geometry of the hosting Element changed.
void	updateShape(PicPoint loc, PicVector dir) To be called when the geometry of the hosting Element changed.

Methods inherited from class java.lang.Object

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

Field Detail

globalScaleWidth

protected double globalScaleWidth

globalScaleLength

protected double globalScaleLength

lineWidth

protected float lineWidth

Constructor Detail

ArrowView

public ArrowView(PicAttributeSet set)

Configure the parameters of this arrow (size, scale, inset, ...) from the given attribute set, aka view/model synchronization. Note that (according to PsTricks doc), attributes apply to both arrows at once for a given element; hence there's no need to separate left and right attributes. This implementation simply synchronizes global scale factors (ARROW_SCALE_WIDTH and ARROW_SCALE_LENGTH), and should be overriden in each concrete subclass.

Usage: this method should invoked by the view responsible for rendering the drawing, whenever synchronization is needed b/w the view and the model, i.e. whenever at least one attribute value changed.

Method Detail

paint

public void paint(Graphics2D g,
                  PicPoint loc,
                  PicVector dir)

Updates then paints this arrow. Convenient call to #paint(Graphics2D, double, double, PicVector).

Parameters:

g - graphic context

loc - arrow reference point on the screen (that is, line end-point)

dir - a vector of length 1 indicating the direction of the arrow (see PEToolKit.getDirector...)

paint

public void paint(Graphics2D g,
                  double locX,
                  double locY,
                  PicVector dir)

Updates then paints this arrow.

Parameters:

g - graphic context

locX - X-coord of arrow reference point on the screen (that is, line end-point)

locY - Y-coord of arrow reference point on the screen (that is, line end-point)

dir - a vector of length 1 indicating the direction of the arrow (see PEToolKit.getDirector...)

paint

public void paint(Graphics2D g)

Paints this arrow.

Parameters:

g - graphic context

updateShape

public abstract void updateShape(double locX,
                                 double locY,
                                 PicVector dir)

To be called when the geometry of the hosting Element changed. Note that whenever attributes changed, a whole new Arrow should be instanciated.

Parameters:

locX - X-coord of arrow reference point on the screen (that is, line end-point)

locY - Y-coord of arrow reference point on the screen (that is, line end-point)

dir - a vector of length 1 indicating the direction of the arrow (see PEToolKit.getDirector...)

updateShape

public void updateShape(PicPoint loc,
                        PicVector dir)

To be called when the geometry of the hosting Element changed. Note that whenever attributes changed, a whole new Arrow should be instanciated.

getPencil

public abstract ArrowView.Pencil getPencil()

whether we call g.draw() or g.fill()

getShape

public abstract Shape getShape()

createArrowView

public static ArrowView createArrowView(StyleConstants.ArrowStyle arrow,
                                        PicAttributeSet set)

Return a View for the given arrow style.

createArrowIcons

public static Map<StyleConstants.ArrowStyle,ImageIcon> createArrowIcons(ArrowView.Direction direction)

build icons for e.g. ComboBoxlists from predefined arrows

Parameters:

direction - specifies arrow direction, LEFT for left arrow, RIGHT for right arrow

main

public static void main(String[] arg)