ColorSpace Issues Migrating to PDFBox 2.0.x - pdfbox

Question

Our department has inherited code that uses Apache PDFBox 1.8.x or earlier and we are in the process of trying to migrate it to Apache PDFBox 2.0.x.
I have resolved a lot of the various issues in this migration, but I'm still having problems migrating some of the ColorSpace related code. Below are some examples that I haven't figured out how to resolve. I've used the missing methods as the headings for each code snippet.
getColorSpaces() and setColorSpace()
public class ColorSpaceSetter extends OperatorProcessor {
private static final Logger logger = LogManager.getLogger(ColorSpaceSetter.class.getName());
public void process(Operator operator, List<COSBase> arguments) throws IOException {
try {
COSName arg = (COSName)arguments.get(0);
String argString = arg.getName();
if (context.getColorSpaces().containsKey(argString)) {
PDColorSpace colorSpace = context.getColorSpaces().get(argString);
if (colorSpace.getName().equals(COSName.SEPARATION.getName())) {
PDSeparation separation = (PDSeparation)colorSpace;
PDColor color;
//Non-stroking
if (StringUtils.isAllLowerCase(operator.getName())) {
color = context.getGraphicsState().getNonStrokingColor();
//Stroking
} else {
color = context.getGraphicsState().getStrokingColor();
}
color.setColorSpace(separation);
}
}
} catch (Exception e) {
logger.error("Unexpected argument array for operator " + operator.getName(), e);
}
}
}
getColorSpace()
public boolean determineStroking(PDColor color) {
for ( Float val : color.getColorSpace()) {
if (val != 1) {
return true;
}
}
return false;
}
setColorSpace() and setColorSpaceValue()
public class StrokeSetter extends OperatorProcessor {
public void process(Operator operator, List<COSBase> arguments) throws IOException {
//Supported operators are: g, rg, k, sc, and scn
//g = device gray (black or white)
//rg = rgb (000 is black, 111 is white, other is some other color)
//k = cmyk (0 is black, 1 is white, other is some other color)
//sc and scn = could be anything, but 0 is black, 1 is white)
boolean blackSeparation = false;
//Lowercase is non-stroking (fill) color
PDColor color;
if (StringUtils.isAllLowerCase(operator.getName())) {
color = context.getGraphicsState().getNonStrokingColor();
//Uppercase is stroking color
} else {
color = context.getGraphicsState().getStrokingColor();
}
//Treat separations differently - see section 4.5.5 of PDF Reference Documentation
PDColorSpace colorSpace = color.getColorSpace();
if (colorSpace.getName().equals(COSName.SEPARATION.getName())) {
PDSeparation separation = (PDSeparation)color.getColorSpace();
if (separation.getColorantName().equals("Black")) {
blackSeparation = true;
}
}
//Black and White
if (operator.getName().equalsIgnoreCase("g")) {
color.setColorSpace( new PDDeviceGray() );
float[] values = new float[1];
if ( arguments.size() >= 1 ) {
values[0] = ((COSNumber)arguments.get( 0 )).floatValue();
} else {
throw new IOException( "Error: Expected at least one argument when setting gray color");
}
color.setColorSpaceValue( values );
//RGB colors
} else if (operator.getName().equalsIgnoreCase("rg")) {
color.setColorSpace(PDDeviceRGB.INSTANCE);
float[] values = new float[3];
for ( int i = 0; i < arguments.size(); i++) {
values[i] = ((COSNumber)arguments.get( i )).floatValue();
}
color.setColorSpaceValue(values);
//CMYK colors
} else if (operator.getName().equalsIgnoreCase("k")) {
color.setColorSpace( PDDeviceCMYK.INSTANCE );
float[] values = new float[4];
for( int i=0; i<arguments.size(); i++ )
{
values[i] = ((COSNumber)arguments.get( i )).floatValue();
}
color.setColorSpaceValue(values);
// Unspecified ColorSpace
} else if (operator.getName().equalsIgnoreCase("sc") || operator.getName().equalsIgnoreCase("scn")) {
int size = arguments.size();
if ( size == 1) {
color.setColorSpace(new PDDeviceGray());
} else if ( size == 3) {
color.setColorSpace(PDDeviceRGB.INSTANCE);
} else if ( size == 4) {
color.setColorSpace(PDDeviceCMYK.INSTANCE);
} else {
color.setColorSpace(new PDDeviceN());
}
float[] values = new float[size];
for( int i=0; i<arguments.size(); i++ )
{
//Flip values when blackSeparation for PDDeviceGray
if (blackSeparation & size == 1) {
float val = ((COSNumber)arguments.get( i )).floatValue();
values[i] = Math.abs(val - 1);
} else {
values[i] = ((COSNumber)arguments.get( i )).floatValue();
}
}
color.setColorSpaceValue(values);
}
}
}