org.jpedal.examples.handlers

Class ExampleImageDrawOnScreenHandler

java.lang.Object

org.jpedal.examples.handlers.ExampleImageDrawOnScreenHandler

All Implemented Interfaces:

ImageHandler

public class ExampleImageDrawOnScreenHandler
extends Object
implements ImageHandler

example code to plugin external image handler. Code to enable commented out in Viewer

Constructor Summary

Constructors

Constructor and Description
ExampleImageDrawOnScreenHandler()

Method Summary

Modifier and Type	Method and Description
boolean	alwaysIgnoreGenericHandler()
boolean	drawImageOnscreen(BufferedImage image, int optionsApplied, AffineTransform upside_down, String currentImageFile, Graphics2D g2, boolean renderDirect, ObjectStore objectStoreRef, boolean isPrinting) Allow user to paint directly onto g2 for screen display
boolean	imageHasBeenScaled() Indicate that image already scaled so should not be scaled/clipped by JPedal
BufferedImage	processImageData(GraphicsState gs, PdfObject XObject)

Methods inherited from class java.lang.Object

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

Constructor Detail

ExampleImageDrawOnScreenHandler

public ExampleImageDrawOnScreenHandler()

Method Detail

alwaysIgnoreGenericHandler

public boolean alwaysIgnoreGenericHandler()

Specified by:

alwaysIgnoreGenericHandler in interface ImageHandler

processImageData

public BufferedImage processImageData(GraphicsState gs,
                                      PdfObject XObject)

Specified by:

processImageData in interface ImageHandler

imageHasBeenScaled

public boolean imageHasBeenScaled()

Description copied from interface: ImageHandler

Indicate that image already scaled so should not be scaled/clipped by JPedal

Specified by:

imageHasBeenScaled in interface ImageHandler

drawImageOnscreen

public boolean drawImageOnscreen(BufferedImage image,
                                 int optionsApplied,
                                 AffineTransform upside_down,
                                 String currentImageFile,
                                 Graphics2D g2,
                                 boolean renderDirect,
                                 ObjectStore objectStoreRef,
                                 boolean isPrinting)

Description copied from interface: ImageHandler

Allow user to paint directly onto g2 for screen display

Specified by:

drawImageOnscreen in interface ImageHandler

Parameters:

image - - actual BufferedImage

optionsApplied - - any options already done (ie 90 rotate) - values from org.jpedal.constants.PDFImageProcessing

upside_down - - AffineTransform applied to page

currentImageFile - - name of file stored on disk

g2 - - Graphics2D render object

renderDirect - -if being rendered straight to g2 (ie bufferedImage)

objectStoreRef - - JPedals class to access cached images

Returns:

true to ignore standard JPedal routines and false to use.