How to use

getInternalBuffer

method

in

com.itextpdf.text.pdf.PdfContentByte

public void setDefaultAppearanceString(PdfContentByte cb) {
  byte b[] = cb.getInternalBuffer().toByteArray();
  int len = b.length;
  for (int k = 0; k < len; ++k) {
    if (b[k] == '\n')
      b[k] = 32;
  }
  put(PdfName.DA, new PdfString(b));
}

public void setDefaultAppearanceString(PdfContentByte cb) {
  byte b[] = cb.getInternalBuffer().toByteArray();
  int len = b.length;
  for (int k = 0; k < len; ++k) {
    if (b[k] == '\n')
      b[k] = 32;
  }
  put(PdfName.DA, new PdfString(b));
}

/**
 * @since    2.1.6 private is now protected
 */
protected void restoreCanvases(PdfContentByte[] canvases) {
  int last = PdfPTable.TEXTCANVAS + 1;
  for (int k = 0; k < last; ++k) {
    ByteBuffer bb = canvases[k].getInternalBuffer();
    int p1 = bb.size();
    canvases[k].restoreState();
    if (p1 == canvasesPos[k * 2 + 1]) {
      bb.setSize(canvasesPos[k * 2]);
    }
  }
}

/**
 * @since    2.1.6 private is now protected
 */
protected void restoreCanvases(PdfContentByte[] canvases) {
  int last = PdfPTable.TEXTCANVAS + 1;
  for (int k = 0; k < last; ++k) {
    ByteBuffer bb = canvases[k].getInternalBuffer();
    int p1 = bb.size();
    canvases[k].restoreState();
    if (p1 == canvasesPos[k * 2 + 1]) {
      bb.setSize(canvasesPos[k * 2]);
    }
  }
}

/**
 * @since    2.1.6 private is now protected
 */
protected void saveAndRotateCanvases(PdfContentByte[] canvases, float a, float b, float c, float d, float e, float f) {
  int last = PdfPTable.TEXTCANVAS + 1;
  if (canvasesPos == null) {
    canvasesPos = new int[last * 2];
  }
  for (int k = 0; k < last; ++k) {
    ByteBuffer bb = canvases[k].getInternalBuffer();
    canvasesPos[k * 2] = bb.size();
    canvases[k].saveState();
    canvases[k].concatCTM(a, b, c, d, e, f);
    canvasesPos[k * 2 + 1] = bb.size();
  }
}

/**
 * @since    2.1.6 private is now protected
 */
protected void saveAndRotateCanvases(PdfContentByte[] canvases, float a, float b, float c, float d, float e, float f) {
  int last = PdfPTable.TEXTCANVAS + 1;
  if (canvasesPos == null) {
    canvasesPos = new int[last * 2];
  }
  for (int k = 0; k < last; ++k) {
    ByteBuffer bb = canvases[k].getInternalBuffer();
    canvasesPos[k * 2] = bb.size();
    canvases[k].saveState();
    canvases[k].concatCTM(a, b, c, d, e, f);
    canvasesPos[k * 2 + 1] = bb.size();
  }
}

under.getInternalBuffer().writeTo(out);
out.write(RESTORESTATE);
content.getInternalBuffer().writeTo(out);
out.write(RESTORESTATE);
text.getInternalBuffer().writeTo(out);
out.write(RESTORESTATE);
secondContent.getInternalBuffer().writeTo(out);

under.getInternalBuffer().writeTo(out);
out.write(RESTORESTATE);
content.getInternalBuffer().writeTo(out);
out.write(RESTORESTATE);
text.getInternalBuffer().writeTo(out);
out.write(RESTORESTATE);
secondContent.getInternalBuffer().writeTo(out);

/**
 * @see Graphics#dispose()
 */
@Override
public void dispose() {
  if (kid)
    return;
  if (!disposeCalled) {
    disposeCalled = true;
    cb.restoreState();
    cb.restoreState();
    if (dg2 != null) {
      dg2.dispose();
      dg2 = null;
    }
    if (kids != null) {
      ByteBuffer buf = new ByteBuffer();
      internalDispose(buf);
      ByteBuffer buf2 = cb.getInternalBuffer();
      buf2.reset();
      buf2.append(buf);
    }
  }
}

if (this.kids == null)
  this.kids = new ArrayList<Kid>();
this.kids.add(new Kid(cb.getInternalBuffer().size(), g2));
return g2;

private void internalDispose(ByteBuffer buf) {
  int last = 0;
  int pos = 0;
  ByteBuffer buf2 = cb.getInternalBuffer();
  if (kids != null) {
    for (Kid kid: kids) {
      pos = kid.pos;
      PdfGraphics2D g2 = kid.graphics;
      g2.cb.restoreState();
      g2.cb.restoreState();
      buf.append(buf2.getBuffer(), last, pos - last);
      if (g2.dg2 != null) {
        g2.dg2.dispose();
        g2.dg2 = null;
      }
      g2.internalDispose(buf);
      last = pos;
    }
  }
  buf.append(buf2.getBuffer(), last, buf2.size() - last);
}