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/*
* $Id$
* Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
* For details on use and redistribution please refer to the
* LICENSE file included with these sources.
*/
package org.apache.fop.pdf;
import java.util.HashMap;
import java.util.Iterator;
/**
* class representing a /ExtGState object.
*
*/
public class PDFGState extends PDFObject {
public static final String LW = "lw";
public static final String LC = "lc";
public static final String LJ = "lj";
public static final String ML = "ml";
public static final String D = "d";
public static final String RI = "ri";
public static final String OP = "OP";
public static final String op = "op";
public static final String OPM = "opm";
public static final String Font = "font";
public static final String BG = "bg";
public static final String BG2 = "bg2";
public static final String UCR = "ucr";
public static final String UCR2 = "ucr2";
public static final String TR = "tr";
public static final String TR2 = "tr2";
public static final String HT = "ht";
public static final String FL = "fl";
public static final String SM = "sm";
public static final String SA = "sa";
public static final String BM = "bm";
public static final String SMask = "smask";
public static final String CA = "CA";
public static final String ca = "ca";
public static final String AIS = "ais";
public static final String TK = "tk";
public static final PDFGState DEFAULT;
static {
DEFAULT = new PDFGState(0);
HashMap vals = DEFAULT.values;
/*vals.put(LW, new Float(1.0));
vals.put(LC, new Integer(0));
vals.put(LJ, new Integer(0));
vals.put(ML, new Float(10.0));
vals.put(D, "0 []");
vals.put(RI, "RelativeColorimetric");
vals.put(OP, Boolean.FALSE);
vals.put(op, Boolean.FALSE);
vals.put(OPM, new Integer(1));
vals.put(Font, "");*/
vals.put(CA, new Float(1.0));
vals.put(ca, new Float(1.0));
}
HashMap values = new HashMap();
/**
* create a /ExtGState object.
*
* @param number the object's number
* @param pageReference the pageReference represented by this object
*/
public PDFGState(int number) {
/* generic creation of object */
super(number);
}
public String getName() {
return "GS" + this.number;
}
public void setAlpha(float val, boolean fill) {
if(fill) {
values.put(ca, new Float(val));
} else {
values.put(CA, new Float(val));
}
}
public void addValues(PDFGState state) {
values.putAll(state.values);
}
public void addValues(HashMap vals) {
values.putAll(vals);
}
/**
* represent the object in PDF
*
* @return the PDF string
*/
public byte[] toPDF() {
StringBuffer sb = new StringBuffer(this.number + " " + this.generation
+ " obj\n<<\n/Type /ExtGState\n");
appendVal(sb, ca);
appendVal(sb, CA);
sb.append(">>\nendobj\n");
return sb.toString().getBytes();
}
private void appendVal(StringBuffer sb, String name) {
Object val = values.get(name);
if(val != null) {
sb.append("/" + name + " " + val + "\n");
}
}
/*
* example
* 29 0 obj
* <<
* /Type /ExtGState
* /ca 0.5
* >>
* endobj
*/
public boolean equals(Object obj) {
if(obj == this) {
return true;
}
if(!(obj instanceof PDFGState)) {
return false;
}
HashMap vals1 = values;
HashMap vals2 = ((PDFGState)obj).values;
if(vals1.size() != vals2.size()) {
return false;
}
for(Iterator iter = vals1.keySet().iterator(); iter.hasNext(); ) {
Object str = iter.next();
Object obj1 = vals1.get(str);
if(!obj1.equals(vals2.get(str))) {
return false;
}
}
return true;
}
}
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