org.freehep.graphicsio
Class ImageGraphicsIO

java.lang.Object
  |
  +--java.awt.Graphics
        |
        +--java.awt.Graphics2D
              |
              +--org.freehep.graphics2d.VectorGraphics
                    |
                    +--org.freehep.graphics2d.AbstractVectorGraphics
                          |
                          +--org.freehep.graphics2d.PixelGraphics2D
                                |
                                +--org.freehep.graphicsio.ImageGraphicsIO

All Implemented Interfaces:

VectorGraphicsConstants

Direct Known Subclasses:

GIFGraphics2D, JPGGraphics2D, PNGGraphics2D, PPMGraphics2D

public abstract class ImageGraphicsIO

extends PixelGraphics2D

Abstract class for generating bitmap outputs from an image.

Version:

$Id: ImageGraphicsIO.java,v 1.2 2002/09/04 21:59:39 duns Exp $

Author:

Mark Donszelmann

Field Summary

protected BufferedImage	image
protected OutputStream	os

Fields inherited from class org.freehep.graphics2d.PixelGraphics2D

hostGraphics, lineWidth, resolution, tagHandler

Fields inherited from interface org.freehep.graphics2d.VectorGraphicsConstants

NUMBER_OF_HORIZ_ALIGNMENTS, NUMBER_OF_SYMBOLS, NUMBER_OF_VERTICAL_ALIGNMENTS, SYMBOL_BOX, SYMBOL_CIRCLE, SYMBOL_CROSS, SYMBOL_DIAMOND, SYMBOL_DN_TRIANGLE, SYMBOL_HLINE, SYMBOL_PLUS, SYMBOL_STAR, SYMBOL_UP_TRIANGLE, SYMBOL_VLINE, TEXT_BASELINE, TEXT_BOTTOM, TEXT_CENTER, TEXT_LEFT, TEXT_RIGHT, TEXT_TOP

Constructor Summary

protected	ImageGraphicsIO(ImageGraphicsIO graphics)
protected	ImageGraphicsIO(OutputStream os, Component component)
protected	ImageGraphicsIO(OutputStream os, Dimension size)

Method Summary

void	closeStream()
abstract Graphics	create()
abstract Graphics	create(double x, double y, double width, double height)
void	endExport()
static Image	generateThumbnail(Component component, int width, int height)
protected void	handleException(Exception exception) Handles an exception which has been caught.
void	startExport()
abstract void	write()

Methods inherited from class org.freehep.graphics2d.PixelGraphics2D

addRenderingHints, clearRect, clearRect, clip, clipRect, clipRect, copyArea, createShape, dispose, draw, drawArc, drawGlyphVector, drawImage, drawImage, drawImage, drawImage, drawImage, drawImage, drawImage, drawImage, drawLine, drawOval, drawPolygon, drawPolygon, drawPolyline, drawRect, drawRenderableImage, drawRenderedImage, drawString, drawString, drawString, drawString, drawString, drawString, drawString, drawString, fill, fillAndDraw, fillArc, fillOval, fillPolygon, fillPolygon, fillRect, getClip, getClipBounds, getClipBounds, getComposite, getDeviceConfiguration, getFont, getFontMetrics, getFontRenderContext, getRenderingHint, getRenderingHints, getStroke, getTransform, hit, printComment, rotate, rotate, scale, setBackground, setClip, setClip, setClip, setColor, setComposite, setFont, setHostGraphics, setLineWidth, setPaint, setPaintMode, setRenderingHint, setRenderingHints, setStroke, setTransform, setXORMode, shear, toString, transform, translate, translate

Methods inherited from class org.freehep.graphics2d.AbstractVectorGraphics

createShape, drawArc, drawLine, drawOval, drawPolygon, drawPolyline, drawRect, drawRoundRect, drawRoundRect, drawString, drawString, drawSymbol, drawSymbol, fillArc, fillOval, fillPolygon, fillRect, fillRoundRect, fillRoundRect, fillSymbol, fillSymbol, getBackground, getColor, getColorMode, getCreator, getPaint, getPrintColor, isDeviceIndependent, setColorMode, setCreator, setDeviceIndependent, setLineWidth

Methods inherited from class org.freehep.graphics2d.VectorGraphics

create, create, getSymbol, getTextAlignment, getXalignment, getYalignment

Methods inherited from class java.awt.Graphics2D

draw3DRect, fill3DRect

Methods inherited from class java.awt.Graphics

drawBytes, drawChars, finalize, getClipRect, getFontMetrics, hitClip

Methods inherited from class java.lang.Object

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

Field Detail

os

protected OutputStream os

image

protected BufferedImage image

Constructor Detail

ImageGraphicsIO

protected ImageGraphicsIO(OutputStream os,
                          Dimension size)

ImageGraphicsIO

protected ImageGraphicsIO(OutputStream os,
                          Component component)

ImageGraphicsIO

protected ImageGraphicsIO(ImageGraphicsIO graphics)

Method Detail

create

public abstract Graphics create()

Overrides:

create in class PixelGraphics2D

create

public abstract Graphics create(double x,
                                double y,
                                double width,
                                double height)

Overrides:

create in class PixelGraphics2D

startExport

public void startExport()

Overrides:

startExport in class PixelGraphics2D

endExport

public void endExport()

Overrides:

endExport in class PixelGraphics2D

write

public abstract void write()
                    throws IOException

IOException

closeStream

public void closeStream()
                 throws IOException

IOException

handleException

protected void handleException(Exception exception)

Handles an exception which has been caught. Dispatches exception to writeWarning for UnsupportedOperationExceptions and writeError for others

Parameters:

exception - to be handled

generateThumbnail

public static Image generateThumbnail(Component component,
                                      int width,
                                      int height)