Re: Gradient paint

[Tilman Hausherr]

I wanted to see whether it works (yes), here's some quick code:

        PDDocument doc = new PDDocument();
        PDPage page = new PDPage();
        doc.addPage(page);
        page.setResources(new PDResources());
        System.out.println(page.getResources());
        Map<String, PDShading> shadings = new HashMap<>();
        COSDictionary dict = new COSDictionary();
        dict.setInt(COSName.SHADING_TYPE, 2);
        dict.setName(COSName.COLORSPACE, "DeviceRGB");
        COSArray coords = new COSArray();
        coords.add(COSInteger.get(100));
        coords.add(COSInteger.get(400));
        coords.add(COSInteger.get(400));
        coords.add(COSInteger.get(600));
        dict.setItem(COSName.COORDS, coords);

        COSDictionary fdict = new COSDictionary();
        fdict.setInt(COSName.FUNCTION_TYPE, 2);
        COSArray dom = new COSArray();
        dom.add(COSInteger.get(0));
        dom.add(COSInteger.get(1));
        COSArray c0 = new COSArray();
        c0.add(COSFloat.get("1"));
        c0.add(COSFloat.get("0"));
        c0.add(COSFloat.get("0"));
        COSArray c1 = new COSArray();
        c1.add(COSFloat.get("0.5"));
        c1.add(COSFloat.get("1"));
        c1.add(COSFloat.get("0.5"));
        fdict.setItem(COSName.DOMAIN, dom);
        fdict.setItem(COSName.C0, c0);
        fdict.setItem(COSName.C1, c1);
        fdict.setInt(COSName.N, 1);
        PDFunctionType2 fun = new PDFunctionType2(fdict);
        dict.setItem(COSName.FUNCTION, fdict);
        PDShadingType2 shading = new PDShadingType2(dict);
        shadings.put("sh1", shading);
        page.getResources().setShadings(shadings);
        PDPageContentStream contentStream = new 
PDPageContentStream(doc, page, true, false);
        contentStream.appendRawCommands("/sh1 sh");
        contentStream.close();
        doc.save("shtest.pdf");
        doc.close();