#49 reduce use of synchronized

[fanfix.git] / src / jexer / tterminal / DisplayLine.java

diff --git a/src/jexer/tterminal/DisplayLine.java b/src/jexer/tterminal/DisplayLine.java
index 8eff2de1b641fbb61ee4aea910e52459ae8b29d9..74e63a85960e840e911c5999b44e21d1ede2799b 100644 (file)
--- a/src/jexer/tterminal/DisplayLine.java
+++ b/src/jexer/tterminal/DisplayLine.java
@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (C) 2017 Kevin Lamonte
+ * Copyright (C) 2019 Kevin Lamonte
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -34,7 +34,7 @@ import jexer.bits.CellAttributes;
 /**
  * This represents a single line of the display buffer.
  */
-public final class DisplayLine {
+public class DisplayLine {
 
     // ------------------------------------------------------------------------
     // Constants --------------------------------------------------------------
@@ -80,6 +80,21 @@ public final class DisplayLine {
     // Constructors -----------------------------------------------------------
     // ------------------------------------------------------------------------
 
+    /**
+     * Public constructor makes a duplicate (deep copy).
+     *
+     * @param line the line to duplicate
+     */
+    public DisplayLine(final DisplayLine line) {
+        chars = new Cell[MAX_LINE_LENGTH];
+        for (int i = 0; i < chars.length; i++) {
+            chars[i] = new Cell(line.chars[i]);
+        }
+        doubleWidth = line.doubleWidth;
+        doubleHeight = line.doubleHeight;
+        reverseColor = line.reverseColor;
+    }
+
     /**
      * Public constructor sets everything to drawing attributes.
      *