Merge commit 'e6bb1700749980e69b5e913acbfd276f129c24dc'

[nikiroo-utils.git] / src / jexer / tterminal / DisplayLine.java

diff --git a/src/jexer/tterminal/DisplayLine.java b/src/jexer/tterminal/DisplayLine.java
index 75e2dfdd1f9a52e8444dde369cdd920a7b52b386..87e6952fb515447b43500395d40cb8e80d0c919b 100644 (file)
--- a/src/jexer/tterminal/DisplayLine.java
+++ b/src/jexer/tterminal/DisplayLine.java
@@ -3,7 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (C) 2016 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"),
@@ -34,17 +34,83 @@ import jexer.bits.CellAttributes;
 /**
  * This represents a single line of the display buffer.
  */
-public final class DisplayLine {
+public class DisplayLine {
+
+    // ------------------------------------------------------------------------
+    // Constants --------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
     /**
      * Maximum line length.
      */
     private static final int MAX_LINE_LENGTH = 256;
 
+    // ------------------------------------------------------------------------
+    // Variables --------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
     /**
      * The characters/attributes of the line.
      */
     private Cell [] chars;
 
+    /**
+     * Double-width line flag.
+     */
+    private boolean doubleWidth = false;
+
+    /**
+     * Double height line flag.  Valid values are:
+     *
+     * <p><pre>
+     *   0 = single height
+     *   1 = top half double height
+     *   2 = bottom half double height
+     * </pre>
+     */
+    private int doubleHeight = 0;
+
+    /**
+     * DECSCNM - reverse video.  We copy the flag to the line so that
+     * reverse-mode scrollback lines still show inverted colors correctly.
+     */
+    private boolean reverseColor = false;
+
+    // ------------------------------------------------------------------------
+    // 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.
+     *
+     * @param attr current drawing attributes
+     */
+    public DisplayLine(final CellAttributes attr) {
+        chars = new Cell[MAX_LINE_LENGTH];
+        for (int i = 0; i < chars.length; i++) {
+            chars[i] = new Cell(attr);
+        }
+    }
+
+    // ------------------------------------------------------------------------
+    // DisplayLine ------------------------------------------------------------
+    // ------------------------------------------------------------------------
+
     /**
      * Get the Cell at a specific column.
      *
@@ -64,11 +130,6 @@ public final class DisplayLine {
         return chars.length;
     }
 
-    /**
-     * Double-width line flag.
-     */
-    private boolean doubleWidth = false;
-
     /**
      * Get double width flag.
      *
@@ -87,17 +148,6 @@ public final class DisplayLine {
         this.doubleWidth = doubleWidth;
     }
 
-    /**
-     * Double height line flag.  Valid values are:
-     *
-     * <p><pre>
-     *   0 = single height
-     *   1 = top half double height
-     *   2 = bottom half double height
-     * </pre>
-     */
-    private int doubleHeight = 0;
-
     /**
      * Get double height flag.
      *
@@ -116,12 +166,6 @@ public final class DisplayLine {
         this.doubleHeight = doubleHeight;
     }
 
-    /**
-     * DECSCNM - reverse video.  We copy the flag to the line so that
-     * reverse-mode scrollback lines still show inverted colors correctly.
-     */
-    private boolean reverseColor = false;
-
     /**
      * Get reverse video flag.
      *
@@ -140,19 +184,6 @@ public final class DisplayLine {
         this.reverseColor = reverseColor;
     }
 
-    /**
-     * Public constructor sets everything to drawing attributes.
-     *
-     * @param attr current drawing attributes
-     */
-    public DisplayLine(final CellAttributes attr) {
-        chars = new Cell[MAX_LINE_LENGTH];
-        for (int i = 0; i < chars.length; i++) {
-            chars[i] = new Cell();
-            chars[i].setTo(attr);
-        }
-    }
-
     /**
      * Insert a character at the specified position.
      *
@@ -161,7 +192,7 @@ public final class DisplayLine {
      */
     public void insert(final int idx, final Cell newCell) {
         System.arraycopy(chars, idx, chars, idx + 1, chars.length - idx - 1);
-        chars[idx] = newCell;
+        chars[idx] = new Cell(newCell);
     }
 
     /**
@@ -190,7 +221,7 @@ public final class DisplayLine {
      * @param idx the character index
      * @param ch the new char
      */
-    public void setChar(final int idx, final char ch) {
+    public void setChar(final int idx, final int ch) {
         chars[idx].setChar(ch);
     }
 
@@ -214,7 +245,32 @@ public final class DisplayLine {
      */
     public void delete(final int idx, final Cell newCell) {
         System.arraycopy(chars, idx + 1, chars, idx, chars.length - idx - 1);
-        chars[chars.length - 1] = newCell;
+        chars[chars.length - 1] = new Cell(newCell);
+    }
+
+    /**
+     * Determine if line contains image data.
+     *
+     * @return true if the line has image data
+     */
+    public boolean isImage() {
+        for (int i = 0; i < chars.length; i++) {
+            if (chars[i].isImage()) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Clear image data from line.
+     */
+    public void clearImages() {
+        for (int i = 0; i < chars.length; i++) {
+            if (chars[i].isImage()) {
+                chars[i].reset();
+            }
+        }
     }
 
 }