--- /dev/null
+/*
+ * Jexer - Java Text User Interface
+ *
+ * The MIT License (MIT)
+ *
+ * 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"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * @author Kevin Lamonte [kevin.lamonte@gmail.com]
+ * @version 1
+ */
+package jexer.tterminal;
+
+import jexer.bits.Cell;
+import jexer.bits.CellAttributes;
+
+/**
+ * This represents a single line of the display buffer.
+ */
+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.
+ *
+ * @param idx the character index
+ * @return the Cell
+ */
+ public Cell charAt(final int idx) {
+ return chars[idx];
+ }
+
+ /**
+ * Get the length of this line.
+ *
+ * @return line length
+ */
+ public int length() {
+ return chars.length;
+ }
+
+ /**
+ * Get double width flag.
+ *
+ * @return double width
+ */
+ public boolean isDoubleWidth() {
+ return doubleWidth;
+ }
+
+ /**
+ * Set double width flag.
+ *
+ * @param doubleWidth new value for double width flag
+ */
+ public void setDoubleWidth(final boolean doubleWidth) {
+ this.doubleWidth = doubleWidth;
+ }
+
+ /**
+ * Get double height flag.
+ *
+ * @return double height
+ */
+ public int getDoubleHeight() {
+ return doubleHeight;
+ }
+
+ /**
+ * Set double height flag.
+ *
+ * @param doubleHeight new value for double height flag
+ */
+ public void setDoubleHeight(final int doubleHeight) {
+ this.doubleHeight = doubleHeight;
+ }
+
+ /**
+ * Get reverse video flag.
+ *
+ * @return reverse video
+ */
+ public boolean isReverseColor() {
+ return reverseColor;
+ }
+
+ /**
+ * Set double-height flag.
+ *
+ * @param reverseColor new value for reverse video flag
+ */
+ public void setReverseColor(final boolean reverseColor) {
+ this.reverseColor = reverseColor;
+ }
+
+ /**
+ * Insert a character at the specified position.
+ *
+ * @param idx the character index
+ * @param newCell the new Cell
+ */
+ public void insert(final int idx, final Cell newCell) {
+ System.arraycopy(chars, idx, chars, idx + 1, chars.length - idx - 1);
+ chars[idx] = new Cell(newCell);
+ }
+
+ /**
+ * Replace character at the specified position.
+ *
+ * @param idx the character index
+ * @param newCell the new Cell
+ */
+ public void replace(final int idx, final Cell newCell) {
+ chars[idx].setTo(newCell);
+ }
+
+ /**
+ * Set the Cell at the specified position to the blank (reset).
+ *
+ * @param idx the character index
+ */
+ public void setBlank(final int idx) {
+ chars[idx].reset();
+ }
+
+ /**
+ * Set the character (just the char, not the attributes) at the specified
+ * position to ch.
+ *
+ * @param idx the character index
+ * @param ch the new char
+ */
+ public void setChar(final int idx, final int ch) {
+ chars[idx].setChar(ch);
+ }
+
+ /**
+ * Set the attributes (just the attributes, not the char) at the
+ * specified position to attr.
+ *
+ * @param idx the character index
+ * @param attr the new attributes
+ */
+ public void setAttr(final int idx, final CellAttributes attr) {
+ chars[idx].setAttr(attr);
+ }
+
+ /**
+ * Delete character at the specified position, filling in the new
+ * character on the right with newCell.
+ *
+ * @param idx the character index
+ * @param newCell the new Cell
+ */
+ public void delete(final int idx, final Cell newCell) {
+ System.arraycopy(chars, idx + 1, chars, idx, chars.length - idx - 1);
+ chars[chars.length - 1] = new Cell(newCell);
+ }
+
+}
git://git.nikiroo.be / fanfix.git / blobdiff