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Java/media/SimpleLineInfo.java

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+/*   
+SimpleLineInfo.java
+ *    
+ *    Copyright (c) 2000, Ted Nelson and Tuomas Lukka
+ *
+ *    You may use and distribute under the terms of either the GNU Lesser
+ *    General Public License, either version 2 of the license or,
+ *    at your choice, any later version. Alternatively, you may use and
+ *    distribute under the terms of the XPL.
+ *
+ *    See the LICENSE.lgpl and LICENSE.xpl files for the specific terms of 
+ *    the licenses.
+ *
+ *    This software is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the README
+ *    file for more details.
+ *
+ */
+/*
+ * Written by Tuomas Lukka
+ */
+package org.gzigzag;
+import java.util.*;
+import java.io.*;
+import java.awt.*;
+
+/** A simple implementation of LineInfo, for plain strings in a list
+ * of fonts.
+ */
+
+public class SimpleLineInfo implements LineInfo {
+public static final String rcsid = "$Id: SimpleLineInfo.java,v 1.8 2000/09/19 10:32:00 ajk Exp $";
+    public static boolean dbg = false;
+    static final void p(String s) { if(dbg) System.out.println(s); }
+
+    public interface Layout {
+	FontMetrics getFontMetrics(int line);
+	int getWidth(int line);
+	int getCenterLine();
+    }
+
+    String s;
+    Layout l;
+    int cursor;
+
+    SimpleLineInfo(String s, int cursor, Layout l) { this.s = s; this.l = l; 
+	this.cursor = cursor;}
+
+    public int getMax() { return s.length(); }
+    public int getCursor() { return cursor; }
+    public int getCenterLine() { return l.getCenterLine(); }
+
+    public void split(int x0, int n, int sug, int[] ret) {
+	int ind = s.indexOf(' ', x0+1);
+	
+	if(ind >= x0+n || ind < 0) {
+	    // split word
+	    ind = 1;
+	    ret[0] = 1;
+	    ret[1] = 500;
+	}  else {
+	    while(true) {
+		int ind2 = s.indexOf(' ', ind+1);
+		if(ind2 < 0) break;
+		if(ind2 >= x0+n) break;
+		if(ind2 >= sug) break;
+		ind = ind2;
+	    }
+	    ret[0] = ind - x0;
+	    ret[1] = 0;
+	}
+	p("Split: "+x0+" "+n+" "+sug+" "+ret[0]+" "+ret[1]);
+    }
+
+    public void widthPenalty(int x0, int n, int line, int[] ret) {
+	p("WP: "+x0+" "+n+" "+line);
+	String subs = s.substring(x0, x0+n).trim();
+	int w = l.getFontMetrics(line).stringWidth(subs);
+	int want = l.getWidth(line);
+	ret[0] = (1000*w) / want;
+	if(w > want) {
+	    ret[1] = (w-want) * (w-want) / 3;
+	} else {
+	    ret[1] = (want - w) / 2;
+	}
+	p("WP: "+x0+" "+n+" "+line+" "+want+" "+w+" Ret: "+ret[0]+" "+ret[1]);
+    }
+}
+
+