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Java/flob/SpanFlob.java

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+/*   
+SpanFlob.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.awt.*;
+
+/** An interface to Flobs that contain a single span.
+ */
+
+public interface SpanFlob {
+String rcsid = "$Id: SpanFlob.java,v 1.5 2000/09/19 10:32:00 ajk Exp $";
+
+    /** The previous and following spanflobs.
+     * These are used for coloring beams: if a beam is being drawn 
+     * between vstreams with a lot of the same content, then
+     * the beam should have just one color. These fields enable 
+     * the beam drawer to see what the vstream actually is.
+     * These are to be set by the routine that puts the spanflobs in the
+     * flobset.
+     */
+    SpanFlob getPrev();
+    SpanFlob getNext();
+    void setNext(SpanFlob sf);
+
+    /** The span this flob contains. Might not be the same as 
+     * flob.c.getSpan() since this might be just a piece of the cell.
+     * Can return null.
+     */
+    Span getSpan();
+
+    /** Get the rectangle corresponding to the given span. The offs and end
+     * are given as substring indices to the span returned by getSpan(),
+     * i.e. the characters offs...end-1 are included.
+     */
+    Rectangle getRectangle(int offs, int end);
+}
+
+