Class LabelRenderer<N>

java.lang.Object

de.engehausen.treemap.swing.impl.LabelRenderer<N>

Type Parameters:

N - the type of node the rectangles work on.

All Implemented Interfaces:

IRectangleRenderer<N,Graphics2D,Color>

public class LabelRenderer<N>
extends Object
implements IRectangleRenderer<N,Graphics2D,Color>

Renders labels for rectangles.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Font	font
protected final boolean	showRoot

Constructor Summary

Constructors

Constructor	Description
LabelRenderer(Font aFont)	Create the renderer using the given font.
LabelRenderer(Font aFont, boolean showsRoot)	Create the renderer using the given font.

Method Summary

Modifier and Type	Method	Description
protected double	aspectRatio(int w, int h)	Compute the aspect ratio.
void	highlight(Graphics2D graphics, ITreeModel<IRectangle<N>> model, IRectangle<N> rectangle, IColorProvider<N,Color> colorProvider, ILabelProvider<N> labelProvider)
void	render(Graphics2D graphics, ITreeModel<IRectangle<N>> model, IRectangle<N> rectangle, IColorProvider<N,Color> colorProvider, ILabelProvider<N> labelProvider)
protected void	render(Graphics2D graphics, String text, Color color, IRectangle<N> bounds)	Renders a label for the given rectangle if possible.

Methods inherited from class java.lang.Object

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

Field Details

font

protected final Font font

showRoot

protected final boolean showRoot

Constructor Details

LabelRenderer

public LabelRenderer(Font aFont)

Create the renderer using the given font.

Parameters:

aFont - the font, must not be null.

LabelRenderer

public LabelRenderer(Font aFont,
 boolean showsRoot)

Create the renderer using the given font.

Parameters:

aFont - the font, must not be null.

showsRoot - set to true if the root node label should be rendered, false otherwise.

Method Details

render

public void render(Graphics2D graphics,
 ITreeModel<IRectangle<N>> model,
 IRectangle<N> rectangle,
 IColorProvider<N,Color> colorProvider,
 ILabelProvider<N> labelProvider)

Specified by:

render in interface IRectangleRenderer<N,Graphics2D,Color>

highlight

public void highlight(Graphics2D graphics,
 ITreeModel<IRectangle<N>> model,
 IRectangle<N> rectangle,
 IColorProvider<N,Color> colorProvider,
 ILabelProvider<N> labelProvider)

Specified by:

highlight in interface IRectangleRenderer<N,Graphics2D,Color>

render

protected void render(Graphics2D graphics,
 String text,
 Color color,
 IRectangle<N> bounds)

Renders a label for the given rectangle if possible. The label is rotated 90 degrees if it fits "better" into the rectangle that way.

Parameters:

graphics - the graphics object to work on

text - the text to render

color - the color to use

bounds - the rectangle bounds

aspectRatio

protected double aspectRatio(int w,
 int h)

Compute the aspect ratio.

Parameters:

w - the width

h - the height

Returns:

the aspect ratio