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BufferedImageSource.javaAPI DocAndroid 1.5 API4942Wed May 06 22:41:54 BST 2009org.apache.harmony.awt.gl.image

BufferedImageSource

public class BufferedImageSource extends Object implements ImageProducer
author
Igor V. Stolyarov
version
$Revision$

Fields Summary
private Hashtable
properties
private ColorModel
cm
private WritableRaster
raster
private int
width
private int
height
private ImageConsumer
ic
Constructors Summary
public BufferedImageSource(BufferedImage image, Hashtable properties)

        if(properties == null) {
            this.properties = new Hashtable<Object, Object>();
        } else {
            this.properties = properties;
        }

        width = image.getWidth();
        height = image.getHeight();
        cm = image.getColorModel();
        raster = image.getRaster();
public BufferedImageSource(BufferedImage image)

        this(image, null);
Methods Summary
public voidaddConsumer(java.awt.image.ImageConsumer ic)

        this.ic = ic;
        startProduction();
public booleanisConsumer(java.awt.image.ImageConsumer ic)

        return (this.ic == ic);
public voidremoveConsumer(java.awt.image.ImageConsumer ic)

        if (this.ic == ic) {
            this.ic = null;
        }
public voidrequestTopDownLeftRightResend(java.awt.image.ImageConsumer ic)
public voidstartProduction(java.awt.image.ImageConsumer ic)

        addConsumer(ic);
private voidstartProduction()

        try {
            ic.setDimensions(width, height);
            ic.setProperties(properties);
            ic.setColorModel(cm);
            ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT |
                    ImageConsumer.COMPLETESCANLINES |
                    ImageConsumer.SINGLEFRAME |
                    ImageConsumer.SINGLEPASS);
            if(cm instanceof IndexColorModel &&
                    raster.getTransferType() == DataBuffer.TYPE_BYTE ||
                    cm instanceof ComponentColorModel &&
                    raster.getTransferType() == DataBuffer.TYPE_BYTE &&
                    raster.getNumDataElements() == 1){
                DataBufferByte dbb = (DataBufferByte) raster.getDataBuffer();
                byte data[] = dbb.getData();
                int off = dbb.getOffset();
                ic.setPixels(0, 0, width, height, cm, data, off, width);
            }else if(cm instanceof DirectColorModel &&
                    raster.getTransferType() == DataBuffer.TYPE_INT){
                DataBufferInt dbi = (DataBufferInt) raster.getDataBuffer();
                int data[] = dbi.getData();
                int off = dbi.getOffset();
                ic.setPixels(0, 0, width, height, cm, data, off, width);
            }else if(cm instanceof DirectColorModel &&
                    raster.getTransferType() == DataBuffer.TYPE_BYTE){
                DataBufferByte dbb = (DataBufferByte) raster.getDataBuffer();
                byte data[] = dbb.getData();
                int off = dbb.getOffset();
                ic.setPixels(0, 0, width, height, cm, data, off, width);
            }else{
                ColorModel rgbCM = ColorModel.getRGBdefault();
                int pixels[] = new int[width];
                Object pix = null;
                for(int y = 0; y < height; y++){
                    for(int x = 0 ; x < width; x++){
                        pix = raster.getDataElements(x, y, pix);
                        pixels[x] = cm.getRGB(pix);
                    }
                    ic.setPixels(0, y, width, 1, rgbCM, pixels, 0, width);
                }
            }
            ic.imageComplete(ImageConsumer.STATICIMAGEDONE);
        }catch (NullPointerException e){
            if (ic != null) {
                ic.imageComplete(ImageConsumer.IMAGEERROR);
            }
        }