Package org.rrd4j.graph

Class ImageWorker

java.lang.Object

org.rrd4j.graph.ImageWorker

Direct Known Subclasses:

BufferedImageWorker, SimpleSVGImageWorker

public abstract class ImageWorker
extends Object

An abstract class, that allows to use custom Graphics2D. To use it the construct should build it and call setG2d(Graphics2D) when finished.

Constructor Summary

Constructors

Constructor	Description
ImageWorker()

Method Summary

Modifier and Type	Method	Description
protected void	clip(int x, int y, int width, int height)
protected void	dispose()
protected void	drawLine(int x1, int y1, int x2, int y2, Paint paint, Stroke stroke)
protected void	drawPolyline(double[] x, double[] y, Paint paint, Stroke stroke)
protected void	drawString(String text, int x, int y, Font font, Paint paint)
protected void	fillPolygon(double[] x, double[] yBottom, double[] yTop, Paint paint)
protected void	fillPolygon(double[] x, double yBottom, double[] yTop, Paint paint)
protected void	fillRect(int x, int y, int width, int height, Paint paint)
protected double	getFontAscent(Font font)
protected double	getFontHeight(Font font)
protected byte[]	getImageBytes()
protected double	getStringWidth(String text, Font font)
protected void	loadImage(RrdGraphDef.ImageSource imageSource, int x, int y, int w, int h)
protected abstract void	makeImage(OutputStream os)
protected void	makeImage(Path path)
protected void	reset()
protected abstract void	reset(Graphics2D g2d)	reset the dimensions of the Graphics2D
protected abstract void	resize(int width, int height)
protected void	saveImage(String path)
protected void	setAntiAliasing(boolean enable)
protected void	setG2d(Graphics2D g2d)
protected void	setTextAntiAliasing(boolean enable)
protected void	transform(int x, int y, double angle)

Methods inherited from class java.lang.Object

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

Constructor Details

ImageWorker

public ImageWorker()

Method Details

setG2d

protected void setG2d(Graphics2D g2d)

resize

protected abstract void resize(int width,
 int height)

clip

protected void clip(int x,
 int y,
 int width,
 int height)

transform

protected void transform(int x,
 int y,
 double angle)

reset

protected void reset()

reset

protected abstract void reset(Graphics2D g2d)

reset the dimensions of the Graphics2D

fillRect

protected void fillRect(int x,
 int y,
 int width,
 int height,
 Paint paint)

fillPolygon

protected void fillPolygon(double[] x,
 double yBottom,
 double[] yTop,
 Paint paint)

fillPolygon

protected void fillPolygon(double[] x,
 double[] yBottom,
 double[] yTop,
 Paint paint)

drawLine

protected void drawLine(int x1,
 int y1,
 int x2,
 int y2,
 Paint paint,
 Stroke stroke)

drawPolyline

protected void drawPolyline(double[] x,
 double[] y,
 Paint paint,
 Stroke stroke)

drawString

protected void drawString(String text,
 int x,
 int y,
 Font font,
 Paint paint)

getFontAscent

protected double getFontAscent(Font font)

getFontHeight

protected double getFontHeight(Font font)

getStringWidth

protected double getStringWidth(String text,
 Font font)

setAntiAliasing

protected void setAntiAliasing(boolean enable)

setTextAntiAliasing

protected void setTextAntiAliasing(boolean enable)

loadImage

protected void loadImage(RrdGraphDef.ImageSource imageSource,
 int x,
 int y,
 int w,
 int h)
                  throws IOException

Throws:

IOException

dispose

protected void dispose()

makeImage

protected void makeImage(Path path)
                  throws IOException

Throws:

IOException

makeImage

protected abstract void makeImage(OutputStream os)
                           throws IOException

Throws:

IOException

saveImage

protected void saveImage(String path)
                  throws IOException

Throws:

IOException

getImageBytes

protected byte[] getImageBytes()
                        throws IOException

Throws:

IOException