Esempio n. 1
0
  private boolean drawImage(
      Image img, Image mask, AffineTransform xform, Color bgColor, ImageObserver obs) {
    if (xform == null) xform = new AffineTransform();
    else xform = new AffineTransform(xform);
    xform.translate(0, img.getHeight(obs));
    xform.scale(img.getWidth(obs), img.getHeight(obs));

    AffineTransform inverse = this.normalizeMatrix();
    AffineTransform flipper = AffineTransform.getScaleInstance(1, -1);
    inverse.concatenate(xform);
    inverse.concatenate(flipper);

    double[] mx = new double[6];
    inverse.getMatrix(mx);
    if (currentFillGState != 255) {
      PdfGState gs = fillGState[255];
      if (gs == null) {
        gs = new PdfGState();
        gs.setFillOpacity(1);
        fillGState[255] = gs;
      }
      cb.setGState(gs);
    }

    try {
      com.lowagie.text.Image image = null;
      if (!convertImagesToJPEG) {
        image = com.lowagie.text.Image.getInstance(img, bgColor);
      } else {
        BufferedImage scaled =
            new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
        Graphics2D g3 = scaled.createGraphics();
        g3.drawImage(img, 0, 0, img.getWidth(null), img.getHeight(null), null);
        g3.dispose();

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ImageWriteParam iwparam = new JPEGImageWriteParam(Locale.getDefault());
        iwparam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        iwparam.setCompressionQuality(jpegQuality); // Set here your compression rate
        ImageWriter iw = (ImageWriter) ImageIO.getImageWritersByFormatName("jpg").next();
        ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
        iw.setOutput(ios);
        iw.write(null, new IIOImage(scaled, null, null), iwparam);
        iw.dispose();
        ios.close();

        scaled.flush();
        scaled = null;
        image = com.lowagie.text.Image.getInstance(baos.toByteArray());
      }
      if (mask != null) {
        com.lowagie.text.Image msk = com.lowagie.text.Image.getInstance(mask, null, true);
        msk.makeMask();
        msk.setInverted(true);
        image.setImageMask(msk);
      }
      cb.addImage(
          image,
          (float) mx[0],
          (float) mx[1],
          (float) mx[2],
          (float) mx[3],
          (float) mx[4],
          (float) mx[5]);
      Object url = getRenderingHint(HyperLinkKey.KEY_INSTANCE);
      if (url != null && !url.equals(HyperLinkKey.VALUE_HYPERLINKKEY_OFF)) {
        PdfAction action = new PdfAction(url.toString());
        cb.setAction(
            action, (float) mx[4], (float) mx[5], (float) (mx[0] + mx[4]), (float) (mx[3] + mx[5]));
      }
    } catch (Exception ex) {
      throw new IllegalArgumentException();
    }
    if (currentFillGState != 255) {
      PdfGState gs = fillGState[currentFillGState];
      cb.setGState(gs);
    }
    return true;
  }
 Image getImage() throws IOException {
   readPng();
   try {
     int pal0 = 0;
     int palIdx = 0;
     palShades = false;
     if (trans != null) {
       for (int k = 0; k < trans.length; ++k) {
         int n = trans[k] & 0xff;
         if (n == 0) {
           ++pal0;
           palIdx = k;
         }
         if (n != 0 && n != 255) {
           palShades = true;
           break;
         }
       }
     }
     if ((colorType & 4) != 0) palShades = true;
     genBWMask = (!palShades && (pal0 > 1 || transRedGray >= 0));
     if (!palShades && !genBWMask && pal0 == 1) {
       additional.put(PdfName.MASK, new PdfLiteral("[" + palIdx + " " + palIdx + "]"));
     }
     boolean needDecode =
         (interlaceMethod == 1)
             || (bitDepth == 16)
             || ((colorType & 4) != 0)
             || palShades
             || genBWMask;
     switch (colorType) {
       case 0:
         inputBands = 1;
         break;
       case 2:
         inputBands = 3;
         break;
       case 3:
         inputBands = 1;
         break;
       case 4:
         inputBands = 2;
         break;
       case 6:
         inputBands = 4;
         break;
     }
     if (needDecode) decodeIdat();
     int components = inputBands;
     if ((colorType & 4) != 0) --components;
     int bpc = bitDepth;
     if (bpc == 16) bpc = 8;
     Image img;
     if (image != null) img = Image.getInstance(width, height, components, bpc, image);
     else {
       img = new ImgRaw(width, height, components, bpc, idat.toByteArray());
       img.setDeflated(true);
       PdfDictionary decodeparms = new PdfDictionary();
       decodeparms.put(PdfName.BITSPERCOMPONENT, new PdfNumber(bitDepth));
       decodeparms.put(PdfName.PREDICTOR, new PdfNumber(15));
       decodeparms.put(PdfName.COLUMNS, new PdfNumber(width));
       decodeparms.put(
           PdfName.COLORS, new PdfNumber((colorType == 3 || (colorType & 2) == 0) ? 1 : 3));
       additional.put(PdfName.DECODEPARMS, decodeparms);
     }
     if (additional.get(PdfName.COLORSPACE) == null)
       additional.put(PdfName.COLORSPACE, getColorspace());
     if (intent != null) additional.put(PdfName.INTENT, intent);
     if (additional.size() > 0) img.setAdditional(additional);
     if (icc_profile != null) img.tagICC(icc_profile);
     if (palShades) {
       Image im2 = Image.getInstance(width, height, 1, 8, smask);
       im2.makeMask();
       img.setImageMask(im2);
     }
     if (genBWMask) {
       Image im2 = Image.getInstance(width, height, 1, 1, smask);
       im2.makeMask();
       img.setImageMask(im2);
     }
     img.setDpi(dpiX, dpiY);
     img.setXYRatio(XYRatio);
     img.setOriginalType(Image.ORIGINAL_PNG);
     return img;
   } catch (Exception e) {
     throw new ExceptionConverter(e);
   }
 }
Esempio n. 3
0
  /**
   * Applying masks to images.
   *
   * @param args no arguments needed
   */
  public static void main(String[] args) {
    System.out.println("masked images");

    Document document = new Document(PageSize.A4, 50, 50, 50, 50);
    try {
      PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("maskedImages.pdf"));

      document.open();
      Paragraph p = new Paragraph("Some text behind a masked image.");
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);

      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      document.add(p);
      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
      };
      Image mask = Image.getInstance(8, 8, 1, 1, maskr);
      mask.makeMask();
      mask.setInverted(true);
      Image image = Image.getInstance("otsoe.jpg");
      image.setImageMask(mask);
      image.setAbsolutePosition(60, 550);
      // explicit masking
      cb.addImage(image);
      // stencil masking
      cb.setRGBColorFill(255, 0, 0);
      cb.addImage(mask, mask.getScaledWidth() * 8, 0, 0, mask.getScaledHeight() * 8, 100, 450);
      cb.setRGBColorFill(0, 255, 0);
      cb.addImage(mask, mask.getScaledWidth() * 8, 0, 0, mask.getScaledHeight() * 8, 100, 400);
      cb.setRGBColorFill(0, 0, 255);
      cb.addImage(mask, mask.getScaledWidth() * 8, 0, 0, mask.getScaledHeight() * 8, 100, 350);
      document.close();
    } catch (Exception de) {
      de.printStackTrace();
    }
  }
Esempio n. 4
0
  private boolean drawImage(
      Image img, Image mask, AffineTransform xform, Color bgColor, ImageObserver obs) {
    if (xform == null) return true;

    xform.translate(0, img.getHeight(obs));
    xform.scale(img.getWidth(obs), img.getHeight(obs));

    AffineTransform inverse = this.normalizeMatrix();
    AffineTransform flipper = AffineTransform.getScaleInstance(1, -1);
    inverse.concatenate(xform);
    inverse.concatenate(flipper);

    double[] mx = new double[6];
    inverse.getMatrix(mx);
    if (currentFillGState != 255) {
      PdfGState gs = fillGState[255];
      if (gs == null) {
        gs = new PdfGState();
        gs.setFillOpacity(1);
        fillGState[255] = gs;
      }
      cb.setGState(gs);
    }

    try {
      com.lowagie.text.Image image = null;
      // ssteward: cut out com.sun.image.codec.jpeg code
      if (true || !convertImagesToJPEG) {
        image = com.lowagie.text.Image.getInstance(img, bgColor);
        convertImagesToJPEG = false; // ssteward
      } else {
        /* ssteward
        BufferedImage scaled = new BufferedImage(img.getWidth(null), img.getHeight(null), BufferedImage.TYPE_INT_RGB);
        Graphics2D g3 = scaled.createGraphics();
        g3.drawImage(img, 0, 0, img.getWidth(null), img.getHeight(null), null);
        g3.dispose();

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        com.sun.image.codec.jpeg.JPEGImageEncoder encoder = com.sun.image.codec.jpeg.JPEGCodec.createJPEGEncoder(baos);
        com.sun.image.codec.jpeg.JPEGEncodeParam param = com.sun.image.codec.jpeg.JPEGCodec.getDefaultJPEGEncodeParam(scaled);
        param.setQuality(jpegQuality, true);
        encoder.encode(scaled, param);
        scaled.flush();
        scaled = null;
        image = com.lowagie.text.Image.getInstance(baos.toByteArray());
        */
      }
      if (mask != null) {
        com.lowagie.text.Image msk = com.lowagie.text.Image.getInstance(mask, null, true);
        msk.makeMask();
        msk.setInvertMask(true);
        image.setImageMask(msk);
      }
      cb.addImage(
          image,
          (float) mx[0],
          (float) mx[1],
          (float) mx[2],
          (float) mx[3],
          (float) mx[4],
          (float) mx[5]);
    } catch (Exception ex) {
      throw new IllegalArgumentException();
    }
    if (currentFillGState != 255) {
      PdfGState gs = fillGState[currentFillGState];
      cb.setGState(gs);
    }
    return true;
  }