Example usage for org.apache.pdfbox.pdmodel.common.function PDFunctionType3 getFunctions

Introduction

In this page you can find the example usage for org.apache.pdfbox.pdmodel.common.function PDFunctionType3 getFunctions.

Prototype

public COSArray getFunctions() 

Source Link

Document

Returns all functions values as COSArray.

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 www .  jav  a  2s .  com*/
        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());
}

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