/*
* List the colorspaces used on each page.
*
* Required software: pCOS interface 8 (PDFlib+PDI/PPS 9, TET 4.1, PLOP 5.0)
* Required data: PDF document
*/
package com.pdflib.cookbook.pcos.pages;
import com.pdflib.IpCOS;
import com.pdflib.cookbook.pcos.pcos_cookbook_example;
public class page_colorspaces extends pcos_cookbook_example {
/* This is where the data files are. Adjust as necessary. */
private final static String SEARCH_PATH = "../input";
public void example_code(IpCOS p, int doc) throws Exception {
System.out.println("File name: " + p.pcos_get_string(doc, "filename"));
int pagecount = (int) p.pcos_get_number(doc, "length:pages");
for (int page = 0; page < pagecount; page++) {
print_colorspaces(p, doc, page);
}
}
/**
* Analyze and print the colorspaces for a given page number.
*
* @param p
* IpCOS object
* @param doc
* Document handle
* @param page
* Page number
*
* @throws Exception
*/
private void print_colorspaces(IpCOS p, int doc, int page)
throws Exception {
int colorspacecount = (int) p.pcos_get_number(doc, "length:pages["
+ page + "]/colorspaces");
if (colorspacecount > 0) {
System.out.println("Page " + (page + 1));
System.out.print(" " + colorspacecount + " color space");
if (colorspacecount != 1) {
System.out.print("s");
}
if (colorspacecount > 0) {
System.out.print(":");
}
System.out.println();
for (int i = 0; i < colorspacecount; i++) {
print_colorspace(p, doc, 0,
"pages[" + page + "]/colorspaces[" + i + "]");
}
}
}
/**
* Print information about a single colorspace.
*
* @param p
* IpCOS object
* @param doc
* Document handle
* @level
* Recursion level, used for indenting
* @param colorspace_path
* The pCOS path to the colorspace of interest
*
* @throws Exception
*/
private void print_colorspace(IpCOS p, int doc, int level, String colorspace_path)
throws Exception {
String prefix = get_prefix(level);
String colorspace = p.pcos_get_string(doc, colorspace_path + "/name");
System.out.println(prefix + " " + colorspace);
int pcosinterface = (int) p.pcos_get_number(doc, "pcosinterface");
int componentcount = (int) p.pcos_get_number(doc,
colorspace_path + "/components");
System.out.println(prefix + " " + componentcount + " component"
+ (componentcount == 1 ? "" : "s"));
if (colorspace.equals("ICCBased")) {
System.out.println(prefix + " size of ICC profile in bytes: "
+ (int) p.pcos_get_number(doc, colorspace_path + "/Length"));
if (pcosinterface >= 10) {
int iccprofileid = (int) p.pcos_get_number(doc,
colorspace_path + "/iccprofileid");
String errormessage = p.pcos_get_string(doc,
"iccprofiles[" + iccprofileid + "]/errormessage");
/* Check whether the embedded profile is damaged */
if (errormessage != null && errormessage.length() > 0) {
System.out.println(" (" + errormessage + ")");
}
else {
String profilename = p.pcos_get_string(doc,
"iccprofiles[" + iccprofileid + "]/profilename");
System.out.println(prefix + " name: '" + profilename + "'");
String profilecs = p.pcos_get_string(doc,
"iccprofiles[" + iccprofileid + "]/profilecs");
System.out.println(prefix + " cs: '" + profilecs + "'");
String deviceclass = p.pcos_get_string(doc,
"iccprofiles[" + iccprofileid + "]/deviceclass");
System.out.println(prefix + " deviceclass: '" + deviceclass + "'");
String iccversion = p.pcos_get_string(doc,
"iccprofiles[" + iccprofileid + "]/iccversion");
System.out.println(prefix + " iccversion: '" + iccversion + "'");
}
}
}
else if (colorspace.equals("Lab")) {
System.out.print(prefix + " WhitePoint: ");
for (int j = 0; j < 3; j += 1) {
System.out.print(p.pcos_get_number(doc, colorspace_path
+ "/csarray[1]/WhitePoint[" + j + "]")
+ " ");
}
System.out.println();
}
else if (colorspace.equals("CalGray") || colorspace.equals("CalRGB")) {
System.out.print(prefix + " WhitePoint: ");
for (int j = 0; j < 3; j += 1) {
System.out.print(p.pcos_get_number(doc, colorspace_path
+ "/csarray[1]/WhitePoint[" + j + "]")
+ " ");
}
System.out.println();
}
else if (colorspace.equals("Separation")) {
String colorant = p.pcos_get_string(doc, colorspace_path
+ "/colorantname");
System.out.println(prefix + " colorant \"" + colorant + "\"");
int alternateid = (int) p.pcos_get_number(doc, colorspace_path
+ "/alternateid");
System.out.println(prefix + " alternate color space:");
print_colorspace(p, doc, level + 1, "colorspaces[" + alternateid + "]");
}
else if (colorspace.equals("DeviceN")) {
int colorantcount = (int) p.pcos_get_number(doc, "length:"
+ colorspace_path + "/colorantnames");
System.out.println(prefix + " colorants:");
for (int j = 0; j < colorantcount; j += 1) {
System.out.println(prefix + " \""
+ p.pcos_get_string(doc, colorspace_path
+ "/colorantnames[" + j + "]") + "\"");
}
int alternateid = (int) p.pcos_get_number(doc, colorspace_path
+ "/alternateid");
System.out.println(prefix + " alternate color space:");
print_colorspace(p, doc, level + 1, "colorspaces[" + alternateid + "]");
}
else if (colorspace.equals("Indexed")) {
int palettesize = (int) p.pcos_get_number(doc, colorspace_path
+ "/csarray[2]");
System.out.println(prefix + " palette size: " + palettesize);
int baseid = (int) p.pcos_get_number(doc, colorspace_path
+ "/baseid");
System.out.println(prefix + " base color space: ");
print_colorspace(p, doc, level + 1, "colorspaces[" + baseid + "]");
}
else if (colorspace.equals("Pattern")) {
/*
* Check whether the Pattern color space has an underlying color
* space, and print it recursively if present.
*
* This only works with a pcosinterface >= 10; for pcosinterface
* < 10 Pattern colorspaces are not present in the colorspaces[]
* array.
*/
int baseid = (int) p.pcos_get_number(doc, colorspace_path
+ "/baseid");
if (baseid != -1) {
System.out.println(prefix + " underlying color space:");
print_colorspace(p, doc, level + 1, "colorspaces[" + baseid + "]");
}
}
}
/**
* Get a prefix string consisting of spaces that can be used to indent
* lines.
*
* @param level
* indentation level
* @return
* indentation string
*
* @throws Exception
*/
private String get_prefix(int level) {
StringBuilder prefix = new StringBuilder();
for (int i = 0; i < level; i += 1) {
prefix.append(" ");
}
return prefix.toString();
}
public page_colorspaces(String[] argv, String readable_name, String search_path) {
super(argv, readable_name, search_path);
}
public static void main(String argv[]) {
page_colorspaces example = new page_colorspaces(argv, "Colorspaces per page",
SEARCH_PATH);
example.execute();
}
}
