Examples of ae.java.awt.image.WritableRaster

ae.java.awt.image.WritableRaster
This class extends Raster to provide pixel writing capabilities. Refer to the class comment for Raster for descriptions of how a Raster stores pixels.
The constructors of this class are protected. To instantiate a WritableRaster, use one of the createWritableRaster factory methods in the Raster class.

    public ColorModel getColorModel() {
        return ColorModel.getRGBdefault();
    }


    public synchronized Raster getRaster(int x, int y, int w, int h) {
        WritableRaster t = savedTile;


        if (t == null || w > t.getWidth() || h > t.getHeight()) {
            t = getColorModel().createCompatibleWritableRaster(w, h);
            IntegerComponentRaster icr = (IntegerComponentRaster) t;
            Arrays.fill(icr.getDataStorage(), color);
            // Note - markDirty is probably unnecessary since icr is brand new
            icr.markDirty();

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        Raster raster = img.getData(region);


        // Make a new Raster with the same contents as raster
        // but starting at (0, 0).  This raster is thus in the same
        // coordinate system as the SampleModel of the original raster.
        WritableRaster wRaster =
              Raster.createWritableRaster(raster.getSampleModel(),
                                          raster.getDataBuffer(),
                                          null);


        // If the original raster was in a different coordinate
        // system than its SampleModel, we need to perform an
        // additional translation in order to get the (minX, minY)
        // pixel of raster to be pixel (0, 0) of wRaster.  We also
        // have to have the correct width and height.
        int minX = raster.getMinX();
        int minY = raster.getMinY();
        int width = raster.getWidth();
        int height = raster.getHeight();
        int px = minX - raster.getSampleModelTranslateX();
        int py = minY - raster.getSampleModelTranslateY();
        if (px != 0 || py != 0 || width != wRaster.getWidth() ||
            height != wRaster.getHeight()) {
            wRaster =
                wRaster.createWritableChild(px,
                                            py,
                                            width,
                                            height,
                                            0, 0,
                                            null);

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                // backwards mapped clip region
                // The result can't be empty
                clipTo(tileRect, region);


                // Create a WritableRaster containing the tile
                WritableRaster wRaster = null;
                if (raster instanceof WritableRaster) {
                    wRaster = (WritableRaster)raster;
                } else {
                    // Create a WritableRaster in the same coordinate system
                    // as the original raster.
                    wRaster =
                        Raster.createWritableRaster(raster.getSampleModel(),
                                                    raster.getDataBuffer(),
                                                    null);
                }


                // Translate wRaster to start at (0, 0) and to contain
                // only the relevent portion of the tile
                wRaster = wRaster.createWritableChild(tileRect.x, tileRect.y,
                                                      tileRect.width,
                                                      tileRect.height,
                                                      0, 0,
                                                      null);

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     * @param src1 The first source tile for the compositing operation.
     * @param src2 The second source tile for the compositing operation.
     * @param dst The tile where the result of the operation is stored.
     */
    public void compose(Raster srcArg, Raster dstIn, WritableRaster dstOut) {
        WritableRaster src;
        int w;
        int h;


        if (dstIn != dstOut) {
            dstOut.setDataElements(0, 0, dstIn);
        }


        // REMIND: We should be able to create a SurfaceData from just
        // a non-writable Raster and a ColorModel.  Since we need to
        // create a SurfaceData from a BufferedImage then we need to
        // make a WritableRaster since it is needed to construct a
        // BufferedImage.
        if (srcArg instanceof WritableRaster) {
            src = (WritableRaster) srcArg;
        } else {
            src = srcArg.createCompatibleWritableRaster();
            src.setDataElements(0, 0, srcArg);
        }


        w = Math.min(src.getWidth(), dstIn.getWidth());
        h = Math.min(src.getHeight(), dstIn.getHeight());


        BufferedImage srcImg = new BufferedImage(srcCM, src,
                                                 srcCM.isAlphaPremultiplied(),
                                                 null);
        BufferedImage dstImg = new BufferedImage(dstCM, dstOut,

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     *            if the specified bounding box is outside of the parent raster.
     */
    public Raster createChild (int x, int y,
                               int width, int height,
                               int x0, int y0, int[] bandList) {
        WritableRaster newRaster = createWritableChild(x, y,
                                                       width, height,
                                                       x0, y0,
                                                       bandList);
        return (Raster) newRaster;
    }

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            width = image.getWidth(null);
            height = image.getHeight(null);
        }


        ColorModel model = ColorModel.getRGBdefault();
        WritableRaster raster =
            model.createCompatibleWritableRaster(width, height);


        BufferedImage bufferedImage =
            new BufferedImage(model, raster, model.isAlphaPremultiplied(),
                              null);

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     * <code>Integer.MAX_VALUE</code>.
     */
    public BufferedImage createBufferedImage(int width, int height) {
        try {
            SampleModel sampleModel = getSampleModel(width, height);
            WritableRaster raster =
                Raster.createWritableRaster(sampleModel,
                                            new Point(0, 0));
            return new BufferedImage(colorModel, raster,
                                     colorModel.isAlphaPremultiplied(),
                                     new Hashtable());

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     *            if the specified bounding box is outside of the parent raster.
     */
    public Raster createChild(int x, int y,
                              int width, int height,
                              int x0, int y0, int[] bandList) {
        WritableRaster newRaster = createWritableChild(x, y,
                                                       width, height,
                                                       x0, y0,
                                                       bandList);
        return (Raster) newRaster;
    }

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     *            if the specified bounding box is outside of the parent raster.
     */
    public Raster createChild(int x, int y,
                              int width, int height,
                              int x0, int y0, int[] bandList) {
        WritableRaster newRaster = createWritableChild(x, y,
                                                       width, height,
                                                       x0, y0,
                                                       bandList);
        return (Raster) newRaster;
    }

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        // If the destination is provided, then use it.  Otherwise, create new one
        bi = param.getDestination();


        // Get the image data.
        WritableRaster raster = null;


        if (bi == null) {
            if (sampleModel != null && colorModel != null) {
                sampleModel =
                    sampleModel.createCompatibleSampleModel(destinationRegion.x +
                                                            destinationRegion.width,
                                                            destinationRegion.y +
                                                            destinationRegion.height);
                if (seleBand)
                    sampleModel = sampleModel.createSubsetSampleModel(sourceBands);
                raster = Raster.createWritableRaster(sampleModel, new Point());
                bi = new BufferedImage(colorModel, raster, false, null);
            }
        } else {
            raster = bi.getWritableTile(0, 0);
            sampleModel = bi.getSampleModel();
            colorModel = bi.getColorModel();


            noTransform &=  destinationRegion.equals(raster.getBounds());
        }


        byte bdata[] = null; // buffer for byte data
        short sdata[] = null; // buffer for short data
        int idata[] = null; // buffer for int data


        // the sampleModel can be null in case of embedded image
        if (sampleModel != null) {
            if (sampleModel.getDataType() == DataBuffer.TYPE_BYTE)
                bdata = (byte[])
                    ((DataBufferByte)raster.getDataBuffer()).getData();
            else if (sampleModel.getDataType() == DataBuffer.TYPE_USHORT)
                sdata = (short[])
                    ((DataBufferUShort)raster.getDataBuffer()).getData();
            else if (sampleModel.getDataType() == DataBuffer.TYPE_INT)
                idata = (int[])
                    ((DataBufferInt)raster.getDataBuffer()).getData();
        }


        // There should only be one tile.
        switch(imageType) {

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