PdfStream getFormXObject() throws IOException {
PdfStream s = new PdfStream(content.toByteArray());
s.put(PdfName.TYPE, PdfName.XOBJECT);
s.put(PdfName.SUBTYPE, PdfName.PS);
s.flateCompress();
return s;
}
public void alterContents() throws IOException {
if (over == null && under == null) return;
PdfArray ar = null;
PdfObject content = PdfReader.getPdfObject(pageN.get(PdfName.CONTENTS), pageN);
if (content == null) {
ar = new PdfArray();
pageN.put(PdfName.CONTENTS, ar);
} else if (content.isArray()) {
ar = (PdfArray) content;
} else if (content.isStream()) {
ar = new PdfArray();
ar.add(pageN.get(PdfName.CONTENTS));
pageN.put(PdfName.CONTENTS, ar);
} else {
ar = new PdfArray();
pageN.put(PdfName.CONTENTS, ar);
}
ByteBuffer out = new ByteBuffer();
if (under != null) {
out.append(PdfContents.SAVESTATE);
applyRotation(pageN, out);
out.append(under.getInternalBuffer());
out.append(PdfContents.RESTORESTATE);
}
if (over != null) out.append(PdfContents.SAVESTATE);
PdfStream stream = new PdfStream(out.toByteArray());
stream.flateCompress(cstp.getCompressionLevel());
PdfIndirectReference ref1 = cstp.addToBody(stream).getIndirectReference();
ar.addFirst(ref1);
out.reset();
if (over != null) {
out.append(' ');
out.append(PdfContents.RESTORESTATE);
out.append(PdfContents.SAVESTATE);
applyRotation(pageN, out);
out.append(over.getInternalBuffer());
out.append(PdfContents.RESTORESTATE);
stream = new PdfStream(out.toByteArray());
stream.flateCompress(cstp.getCompressionLevel());
ar.add(cstp.addToBody(stream).getIndirectReference());
}
pageN.put(PdfName.RESOURCES, pageResources.getResources());
}
/**
* Creates a ToUnicode CMap to allow copy and paste from Acrobat.
*
* @param metrics metrics[0] contains the glyph index and metrics[2] contains the Unicode code
* @return the stream representing this CMap or <CODE>null</CODE>
*/
public PdfStream getToUnicode(Object metrics[]) {
if (metrics.length == 0) return null;
StringBuffer buf =
new StringBuffer(
"/CIDInit /ProcSet findresource begin\n"
+ "12 dict begin\n"
+ "begincmap\n"
+ "/CIDSystemInfo\n"
+ "<< /Registry (TTX+0)\n"
+ "/Ordering (T42UV)\n"
+ "/Supplement 0\n"
+ ">> def\n"
+ "/CMapName /TTX+0 def\n"
+ "/CMapType 2 def\n"
+ "1 begincodespacerange\n"
+ "<0000><FFFF>\n"
+ "endcodespacerange\n");
int size = 0;
for (int k = 0; k < metrics.length; ++k) {
if (size == 0) {
if (k != 0) {
buf.append("endbfrange\n");
}
size = Math.min(100, metrics.length - k);
buf.append(size).append(" beginbfrange\n");
}
--size;
int metric[] = (int[]) metrics[k];
String fromTo = toHex(metric[0]);
buf.append(fromTo).append(fromTo).append(toHex(metric[2])).append('\n');
}
buf.append(
"endbfrange\n"
+ "endcmap\n"
+ "CMapName currentdict /CMap defineresource pop\n"
+ "end end\n");
String s = buf.toString();
PdfStream stream = new PdfStream(PdfEncodings.convertToBytes(s, null));
stream.flateCompress(compressionLevel);
return stream;
}
/**
* Creates a JavaScript action. If the JavaScript is smaller than 50 characters it will be placed
* as a string, otherwise it will be placed as a compressed stream.
*
* @param code the JavaScript code
* @param writer the writer for this action
* @param unicode select JavaScript unicode. Note that the internal Acrobat JavaScript engine does
* not support unicode, so this may or may not work for you
* @return the JavaScript action
*/
public static PdfAction javaScript(String code, PdfWriter writer, boolean unicode) {
PdfAction js = new PdfAction();
js.put(PdfName.S, PdfName.JAVASCRIPT);
if (unicode && code.length() < 50) {
js.put(PdfName.JS, new PdfString(code, PdfObject.TEXT_UNICODE));
} else if (!unicode && code.length() < 100) {
js.put(PdfName.JS, new PdfString(code));
} else {
try {
byte b[] =
PdfEncodings.convertToBytes(
code, unicode ? PdfObject.TEXT_UNICODE : PdfObject.TEXT_PDFDOCENCODING);
PdfStream stream = new PdfStream(b);
stream.flateCompress(writer.getCompressionLevel());
js.put(PdfName.JS, writer.addToBody(stream).getIndirectReference());
} catch (Exception e) {
js.put(PdfName.JS, new PdfString(code));
}
}
return js;
}
