Example usage for java.awt.image IndexColorModel getRGBs

Introduction

In this page you can find the example usage for java.awt.image IndexColorModel getRGBs.

Prototype

public final void getRGBs(int[] rgb) 

Source Link

Document

Converts data for each index from the color and alpha component arrays to an int in the default RGB ColorModel format and copies the resulting 32-bit ARGB values into the specified array.

Usage

From source file:org.apache.fop.render.pdf.AbstractImageAdapter.java

/**
 * This is to be used by populateXObjectDictionary() when the image is palette based.
 * @param dict the dictionary to fill in
 * @param icm the image color model/*from   ww  w  .java2  s . c o m*/
 */
protected void populateXObjectDictionaryForIndexColorModel(PDFDictionary dict, IndexColorModel icm) {
    PDFArray indexed = new PDFArray(dict);
    indexed.add(new PDFName("Indexed"));
    if (icm.getColorSpace().getType() != ColorSpace.TYPE_RGB) {
        log.warn("Indexed color space is not using RGB as base color space."
                + " The image may not be handled correctly." + " Base color space: " + icm.getColorSpace()
                + " Image: " + image.getInfo());
    }
    indexed.add(new PDFName(toPDFColorSpace(icm.getColorSpace()).getName()));
    int c = icm.getMapSize();
    int hival = c - 1;
    if (hival > MAX_HIVAL) {
        throw new UnsupportedOperationException("hival must not go beyond " + MAX_HIVAL);
    }
    indexed.add(Integer.valueOf(hival));
    int[] palette = new int[c];
    icm.getRGBs(palette);
    ByteArrayOutputStream baout = new ByteArrayOutputStream();
    for (int i = 0; i < c; i++) {
        // TODO Probably doesn't work for non RGB based color spaces
        // See log warning above
        int entry = palette[i];
        baout.write((entry & 0xFF0000) >> 16);
        baout.write((entry & 0xFF00) >> 8);
        baout.write(entry & 0xFF);
    }
    indexed.add(baout.toByteArray());

    dict.put("ColorSpace", indexed);
    dict.put("BitsPerComponent", icm.getPixelSize());

    Integer index = getIndexOfFirstTransparentColorInPalette(icm);
    if (index != null) {
        PDFArray mask = new PDFArray(dict);
        mask.add(index);
        mask.add(index);
        dict.put("Mask", mask);
    }
}

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From source file:org.apache.xmlgraphics.ps.PSImageUtils.java

private static void prepareColorSpace(PSGenerator gen, ColorModel cm) throws IOException {
    //Prepare color space
    if ((cm instanceof IndexColorModel)) {
        ColorSpace cs = cm.getColorSpace();
        IndexColorModel im = (IndexColorModel) cm;
        gen.write("[/Indexed " + getColorSpaceName(cs));
        int c = im.getMapSize();
        int hival = c - 1;
        if (hival > 4095) {
            throw new UnsupportedOperationException("hival must not go beyond 4095");
        }/*w w w  .j  a  v a2 s.  co m*/
        gen.writeln(" " + Integer.toString(hival));
        gen.write("  <");
        int[] palette = new int[c];
        im.getRGBs(palette);
        for (int i = 0; i < c; i++) {
            if (i > 0) {
                if ((i % 8) == 0) {
                    gen.newLine();
                    gen.write("   ");
                } else {
                    gen.write(" ");
                }
            }
            gen.write(rgb2Hex(palette[i]));
        }
        gen.writeln(">");
        gen.writeln("] setcolorspace");
    } else {
        gen.writeln(getColorSpaceName(cm.getColorSpace()) + " setcolorspace");
    }
}

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