Example usage for org.apache.pdfbox.cos COSName DOMAIN

Introduction

In this page you can find the example usage for org.apache.pdfbox.cos COSName DOMAIN.

Prototype

COSName DOMAIN

To view the source code for org.apache.pdfbox.cos COSName DOMAIN.

Click Source Link

Usage

From source file:org.apache.fop.render.pdf.pdfbox.PSPDFGraphics2D.java

License:Apache License

private static Function getFunction(PDFunction f) throws IOException {
    if (f instanceof PDFunctionType3) {
        PDFunctionType3 sourceFT3 = (PDFunctionType3) f;
        float[] bounds = sourceFT3.getBounds().toFloatArray();
        COSArray sourceFunctions = sourceFT3.getFunctions();
        List<Function> targetFunctions = new ArrayList<Function>();
        for (int j = 0; j < sourceFunctions.size(); j++) {
            targetFunctions.add(getFunction(PDFunction.create(sourceFunctions.get(j))));
        }/*from w w  w .  ja  v a2 s. co  m*/
        return new Function(null, null, targetFunctions, toList(bounds), null);
    } else if (f instanceof PDFunctionType2) {
        PDFunctionType2 sourceFT2 = (PDFunctionType2) f;
        double interpolation = (double) sourceFT2.getN();
        float[] c0 = sourceFT2.getC0().toFloatArray();
        float[] c1 = sourceFT2.getC1().toFloatArray();
        return new Function(null, null, c0, c1, interpolation);
    } else if (f instanceof PDFunctionType0) {
        COSDictionary s = f.getCOSObject();
        assert s instanceof COSStream;
        COSStream stream = (COSStream) s;
        COSArray encode = (COSArray) s.getDictionaryObject(COSName.ENCODE);
        COSArray domain = (COSArray) s.getDictionaryObject(COSName.DOMAIN);
        COSArray range = (COSArray) s.getDictionaryObject(COSName.RANGE);
        int bits = ((COSInteger) s.getDictionaryObject(COSName.BITS_PER_SAMPLE)).intValue();
        COSArray size = (COSArray) s.getDictionaryObject(COSName.SIZE);
        byte[] x = IOUtils.toByteArray(stream.getUnfilteredStream());
        for (byte y : x) {
            if (y != 0) {
                return new Function(floatArrayToDoubleList(domain.toFloatArray()),
                        floatArrayToDoubleList(range.toFloatArray()),
                        floatArrayToDoubleList(encode.toFloatArray()), x, bits, toList(size));
            }
        }
        return null;
    }
    throw new IOException("Unsupported " + f.toString());
}

---