Examples of com.lowagie.text.LwgImage.makeMask()

com.lowagie.text.LwgImage.makeMask()
Make this LwgImage a mask. @throws DocumentException if this LwgImage can not be a mask

            img.setAbsolutePosition(100, 550);
            byte gradient[] = new byte[256];
            for (int k = 0; k < 256; ++k)
                gradient[k] = (byte)k;
            LwgImage smask = LwgImage.getInstance(256, 1, 1, 8, gradient);
            smask.makeMask();
            img.setImageMask(smask);
            cb.addImage(img);
            cb.sanityCheck();
        }
        catch (Exception de) {

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            document.add(p);
            document.add(p);
            PdfContentByte cb = writer.getDirectContent();
            byte maskr[] = {(byte)0x3c, (byte)0x7e, (byte)0xe7, (byte)0xc3, (byte)0xc3, (byte)0xe7, (byte)0x7e, (byte)0x3c};
            LwgImage mask = LwgImage.getInstance(8, 8, 1, 1, maskr);
            mask.makeMask();
            mask.setInverted(true);
            LwgImage image = LwgImage.getInstance("otsoe.jpg");
            image.setImageMask(mask);
            image.setAbsolutePosition(60, 550);
            // explicit masking

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                img.setAdditional(additional);
            if (icc_profile != null)
                img.tagICC(icc_profile);
            if (palShades) {
                LwgImage im2 = LwgImage.getInstance(width, height, 1, 8, smask);
                im2.makeMask();
                img.setImageMask(im2);
            }
            if (genBWMask) {
                LwgImage im2 = LwgImage.getInstance(width, height, 1, 1, smask);
                im2.makeMask();

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                im2.makeMask();
                img.setImageMask(im2);
            }
            if (genBWMask) {
                LwgImage im2 = LwgImage.getInstance(width, height, 1, 1, smask);
                im2.makeMask();
                img.setImageMask(im2);
            }
            img.setDpi(dpiX, dpiY);
            img.setXYRatio(XYRatio);
            img.setOriginalType(LwgImage.ORIGINAL_PNG);

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