Package org.bootchart.renderer

Class ImageRenderer

java.lang.Object

org.bootchart.renderer.Renderer

org.bootchart.renderer.ImageRenderer

Direct Known Subclasses:

EPSRenderer, PNGRenderer

public abstract class ImageRenderer
extends Renderer

ImageRenderer renders the boot chart as a Java 2D BufferedImage. Subclasses may then encode the image in different formats (e.g. PNG or EPS).

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	allowAlpha	Whether to allow usage of transparency.
protected Graphics	g
protected BufferedImage	img

Constructor Summary

Constructors

Constructor	Description
ImageRenderer()

Method Summary

Modifier and Type	Method	Description
abstract String	getFileSuffix()	Returns the file suffix to use for the rendered image.
void	render(Properties headers, BootStats bootStats, OutputStream os)	Render the chart.

Methods inherited from class java.lang.Object

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

Field Details

g

protected Graphics g

img

protected BufferedImage img

allowAlpha

protected boolean allowAlpha

Whether to allow usage of transparency. Certain renderers (e.g. EPS) will produce better results if the colors aren't transparent.

Constructor Details

ImageRenderer

public ImageRenderer()

Method Details

render

public void render(Properties headers,
 BootStats bootStats,
 OutputStream os)
            throws IOException

Render the chart.

Specified by:

render in class Renderer

Parameters:

headers - header properties to include in the title banner

bootStats - boot statistics

os - the output stream to write t

Throws:

IOException - if an I/O error occurs

getFileSuffix

public abstract String getFileSuffix()

Description copied from class: Renderer

Returns the file suffix to use for the rendered image.

Specified by:

getFileSuffix in class Renderer

Returns:

file suffix