-/**
+/*
* Jexer - Java Text User Interface
*
- * Version: $Id$
- *
- * Author: Kevin Lamonte, <a href="mailto:kevin.lamonte@gmail.com">kevin.lamonte@gmail.com</a>
+ * The MIT License (MIT)
*
- * License: LGPLv3 or later
+ * Copyright (C) 2016 Kevin Lamonte
*
- * Copyright: This module is licensed under the GNU Lesser General
- * Public License Version 3. Please see the file "COPYING" in this
- * directory for more information about the GNU Lesser General Public
- * License Version 3.
+ * 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:
*
- * Copyright (C) 2015 Kevin Lamonte
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public License
- * as published by the Free Software Foundation; either version 3 of
- * the License, or (at your option) any later version.
+ * 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.
*
- * This program 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 GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this program; if not, see
- * http://www.gnu.org/licenses/, or write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
+ * @author Kevin Lamonte [kevin.lamonte@gmail.com]
+ * @version 1
*/
package jexer.io;
import jexer.bits.CellAttributes;
/**
- * This Screen class draws to an xterm/ANSI X3.64/ECMA-48 type terminal.
+ * This Screen implementation draws to an xterm/ANSI X3.64/ECMA-48 type
+ * terminal.
*/
-public class ECMA48Screen extends Screen {
+public final class ECMA48Screen extends Screen {
/**
- * We call terminal.cursor() so need the instance
+ * Emit debugging to stderr.
+ */
+ private boolean debugToStderr;
+
+ /**
+ * We call terminal.cursor() so need the instance.
*/
private ECMA48Terminal terminal;
/**
- * Public constructor
+ * Public constructor.
*
* @param terminal ECMA48Terminal to use
*/
- public ECMA48Screen(ECMA48Terminal terminal) {
- this.terminal = terminal;
+ public ECMA48Screen(final ECMA48Terminal terminal) {
+ debugToStderr = false;
+
+ this.terminal = terminal;
- // Query the screen size
- setDimensions(terminal.session.getWindowWidth(),
- terminal.session.getWindowHeight());
+ // Query the screen size
+ setDimensions(terminal.getSessionInfo().getWindowWidth(),
+ terminal.getSessionInfo().getWindowHeight());
}
/**
- * Perform a somewhat-optimal rendering of a line
+ * Perform a somewhat-optimal rendering of a line.
*
* @param y row coordinate. 0 is the top-most row.
* @param sb StringBuilder to write escape sequences to
* @param lastAttr cell attributes from the last call to flushLine
*/
- private void flushLine(int y, StringBuilder sb, CellAttributes lastAttr) {
-
- int lastX = -1;
- int textEnd = 0;
- for (int x = 0; x < width; x++) {
- Cell lCell = logical[x][y];
- if (!lCell.isBlank()) {
- textEnd = x;
- }
- }
- // Push textEnd to first column beyond the text area
- textEnd++;
-
- // DEBUG
- // reallyCleared = true;
-
- for (int x = 0; x < width; x++) {
- Cell lCell = logical[x][y];
- Cell pCell = physical[x][y];
-
- if ((lCell != pCell) || (reallyCleared == true)) {
-
- if (debugToStderr) {
- System.err.printf("\n--\n");
- System.err.printf(" Y: %d X: %d\n", y, x);
- System.err.printf(" lCell: %s\n", lCell);
- System.err.printf(" pCell: %s\n", pCell);
- System.err.printf(" ==== \n");
- }
-
- if (lastAttr == null) {
- lastAttr = new CellAttributes();
- sb.append(terminal.normal());
- }
-
- // Place the cell
- if ((lastX != (x - 1)) || (lastX == -1)) {
- // Advancing at least one cell, or the first gotoXY
- sb.append(terminal.gotoXY(x, y));
- }
-
- assert(lastAttr != null);
-
- if ((x == textEnd) && (textEnd < width - 1)) {
- assert(lCell.isBlank());
-
- for (int i = x; i < width; i++) {
- assert(logical[i][y].isBlank());
- // Physical is always updatesd
- physical[i][y].reset();
- }
-
- // Clear remaining line
- sb.append(terminal.clearRemainingLine());
- lastAttr.reset();
- return;
- }
-
- // Now emit only the modified attributes
- if ((lCell.foreColor != lastAttr.foreColor) &&
- (lCell.backColor != lastAttr.backColor) &&
- (lCell.bold == lastAttr.bold) &&
- (lCell.reverse == lastAttr.reverse) &&
- (lCell.underline == lastAttr.underline) &&
- (lCell.blink == lastAttr.blink)) {
-
- // Both colors changed, attributes the same
- sb.append(terminal.color(lCell.foreColor,
- lCell.backColor));
-
- if (debugToStderr) {
- System.err.printf("1 Change only fore/back colors\n");
- }
- } else if ((lCell.foreColor != lastAttr.foreColor) &&
- (lCell.backColor != lastAttr.backColor) &&
- (lCell.bold != lastAttr.bold) &&
- (lCell.reverse != lastAttr.reverse) &&
- (lCell.underline != lastAttr.underline) &&
- (lCell.blink != lastAttr.blink)) {
-
- if (debugToStderr) {
- System.err.printf("2 Set all attributes\n");
- }
-
- // Everything is different
- sb.append(terminal.color(lCell.foreColor,
- lCell.backColor,
- lCell.bold, lCell.reverse, lCell.blink,
- lCell.underline));
-
- } else if ((lCell.foreColor != lastAttr.foreColor) &&
- (lCell.backColor == lastAttr.backColor) &&
- (lCell.bold == lastAttr.bold) &&
- (lCell.reverse == lastAttr.reverse) &&
- (lCell.underline == lastAttr.underline) &&
- (lCell.blink == lastAttr.blink)) {
-
- // Attributes same, foreColor different
- sb.append(terminal.color(lCell.foreColor, true));
-
- if (debugToStderr) {
- System.err.printf("3 Change foreColor\n");
- }
-
- } else if ((lCell.foreColor == lastAttr.foreColor) &&
- (lCell.backColor != lastAttr.backColor) &&
- (lCell.bold == lastAttr.bold) &&
- (lCell.reverse == lastAttr.reverse) &&
- (lCell.underline == lastAttr.underline) &&
- (lCell.blink == lastAttr.blink)) {
-
- // Attributes same, backColor different
- sb.append(terminal.color(lCell.backColor, false));
-
- if (debugToStderr) {
- System.err.printf("4 Change backColor\n");
- }
-
- } else if ((lCell.foreColor == lastAttr.foreColor) &&
- (lCell.backColor == lastAttr.backColor) &&
- (lCell.bold == lastAttr.bold) &&
- (lCell.reverse == lastAttr.reverse) &&
- (lCell.underline == lastAttr.underline) &&
- (lCell.blink == lastAttr.blink)) {
-
- // All attributes the same, just print the char
- // NOP
-
- if (debugToStderr) {
- System.err.printf("5 Only emit character\n");
- }
- } else {
- // Just reset everything again
- sb.append(terminal.color(lCell.foreColor, lCell.backColor,
- lCell.bold, lCell.reverse, lCell.blink,
- lCell.underline));
-
- if (debugToStderr) {
- System.err.printf("6 Change all attributes\n");
- }
- }
- // Emit the character
- sb.append(lCell.ch);
-
- // Save the last rendered cell
- lastX = x;
- lastAttr.setTo(lCell);
-
- // Physical is always updatesd
- physical[x][y].setTo(lCell);
-
- } // if ((lCell != pCell) || (reallyCleared == true))
-
- } // for (int x = 0; x < width; x++)
+ private void flushLine(final int y, final StringBuilder sb,
+ CellAttributes lastAttr) {
+
+ int lastX = -1;
+ int textEnd = 0;
+ for (int x = 0; x < width; x++) {
+ Cell lCell = logical[x][y];
+ if (!lCell.isBlank()) {
+ textEnd = x;
+ }
+ }
+ // Push textEnd to first column beyond the text area
+ textEnd++;
+
+ // DEBUG
+ // reallyCleared = true;
+
+ for (int x = 0; x < width; x++) {
+ Cell lCell = logical[x][y];
+ Cell pCell = physical[x][y];
+
+ if (!lCell.equals(pCell) || reallyCleared) {
+
+ if (debugToStderr) {
+ System.err.printf("\n--\n");
+ System.err.printf(" Y: %d X: %d\n", y, x);
+ System.err.printf(" lCell: %s\n", lCell);
+ System.err.printf(" pCell: %s\n", pCell);
+ System.err.printf(" ==== \n");
+ }
+
+ if (lastAttr == null) {
+ lastAttr = new CellAttributes();
+ sb.append(terminal.normal());
+ }
+
+ // Place the cell
+ if ((lastX != (x - 1)) || (lastX == -1)) {
+ // Advancing at least one cell, or the first gotoXY
+ sb.append(terminal.gotoXY(x, y));
+ }
+
+ assert (lastAttr != null);
+
+ if ((x == textEnd) && (textEnd < width - 1)) {
+ assert (lCell.isBlank());
+
+ for (int i = x; i < width; i++) {
+ assert (logical[i][y].isBlank());
+ // Physical is always updatesd
+ physical[i][y].reset();
+ }
+
+ // Clear remaining line
+ sb.append(terminal.clearRemainingLine());
+ lastAttr.reset();
+ return;
+ }
+
+ // Now emit only the modified attributes
+ if ((lCell.getForeColor() != lastAttr.getForeColor())
+ && (lCell.getBackColor() != lastAttr.getBackColor())
+ && (lCell.isBold() == lastAttr.isBold())
+ && (lCell.isReverse() == lastAttr.isReverse())
+ && (lCell.isUnderline() == lastAttr.isUnderline())
+ && (lCell.isBlink() == lastAttr.isBlink())
+ ) {
+ // Both colors changed, attributes the same
+ sb.append(terminal.color(lCell.getForeColor(),
+ lCell.getBackColor()));
+
+ if (debugToStderr) {
+ System.err.printf("1 Change only fore/back colors\n");
+ }
+ } else if ((lCell.getForeColor() != lastAttr.getForeColor())
+ && (lCell.getBackColor() != lastAttr.getBackColor())
+ && (lCell.isBold() != lastAttr.isBold())
+ && (lCell.isReverse() != lastAttr.isReverse())
+ && (lCell.isUnderline() != lastAttr.isUnderline())
+ && (lCell.isBlink() != lastAttr.isBlink())
+ ) {
+ // Everything is different
+ sb.append(terminal.color(lCell.getForeColor(),
+ lCell.getBackColor(),
+ lCell.isBold(), lCell.isReverse(),
+ lCell.isBlink(),
+ lCell.isUnderline()));
+
+ if (debugToStderr) {
+ System.err.printf("2 Set all attributes\n");
+ }
+ } else if ((lCell.getForeColor() != lastAttr.getForeColor())
+ && (lCell.getBackColor() == lastAttr.getBackColor())
+ && (lCell.isBold() == lastAttr.isBold())
+ && (lCell.isReverse() == lastAttr.isReverse())
+ && (lCell.isUnderline() == lastAttr.isUnderline())
+ && (lCell.isBlink() == lastAttr.isBlink())
+ ) {
+
+ // Attributes same, foreColor different
+ sb.append(terminal.color(lCell.getForeColor(), true));
+
+ if (debugToStderr) {
+ System.err.printf("3 Change foreColor\n");
+ }
+ } else if ((lCell.getForeColor() == lastAttr.getForeColor())
+ && (lCell.getBackColor() != lastAttr.getBackColor())
+ && (lCell.isBold() == lastAttr.isBold())
+ && (lCell.isReverse() == lastAttr.isReverse())
+ && (lCell.isUnderline() == lastAttr.isUnderline())
+ && (lCell.isBlink() == lastAttr.isBlink())
+ ) {
+ // Attributes same, backColor different
+ sb.append(terminal.color(lCell.getBackColor(), false));
+
+ if (debugToStderr) {
+ System.err.printf("4 Change backColor\n");
+ }
+ } else if ((lCell.getForeColor() == lastAttr.getForeColor())
+ && (lCell.getBackColor() == lastAttr.getBackColor())
+ && (lCell.isBold() == lastAttr.isBold())
+ && (lCell.isReverse() == lastAttr.isReverse())
+ && (lCell.isUnderline() == lastAttr.isUnderline())
+ && (lCell.isBlink() == lastAttr.isBlink())
+ ) {
+
+ // All attributes the same, just print the char
+ // NOP
+
+ if (debugToStderr) {
+ System.err.printf("5 Only emit character\n");
+ }
+ } else {
+ // Just reset everything again
+ sb.append(terminal.color(lCell.getForeColor(),
+ lCell.getBackColor(),
+ lCell.isBold(),
+ lCell.isReverse(),
+ lCell.isBlink(),
+ lCell.isUnderline()));
+
+ if (debugToStderr) {
+ System.err.printf("6 Change all attributes\n");
+ }
+ }
+ // Emit the character
+ sb.append(lCell.getChar());
+
+ // Save the last rendered cell
+ lastX = x;
+ lastAttr.setTo(lCell);
+
+ // Physical is always updated
+ physical[x][y].setTo(lCell);
+
+ } // if (!lCell.equals(pCell) || (reallyCleared == true))
+
+ } // for (int x = 0; x < width; x++)
}
/**
* @return escape sequences string that provides the updates to the
* physical screen
*/
- public String flushString() {
- if (dirty == false) {
- assert(reallyCleared == false);
- return "";
- }
-
- CellAttributes attr = null;
-
- StringBuilder sb = new StringBuilder();
- if (reallyCleared == true) {
- attr = new CellAttributes();
- sb.append(terminal.clearAll());
- }
-
- for (int y = 0; y < height; y++) {
- flushLine(y, sb, attr);
- }
-
- dirty = false;
- reallyCleared = false;
-
- String result = sb.toString();
- if (debugToStderr) {
- System.err.printf("flushString(): %s\n", result);
- }
- return result;
+ private String flushString() {
+ if (!dirty) {
+ assert (!reallyCleared);
+ return "";
+ }
+
+ CellAttributes attr = null;
+
+ StringBuilder sb = new StringBuilder();
+ if (reallyCleared) {
+ attr = new CellAttributes();
+ sb.append(terminal.clearAll());
+ }
+
+ for (int y = 0; y < height; y++) {
+ flushLine(y, sb, attr);
+ }
+
+ dirty = false;
+ reallyCleared = false;
+
+ String result = sb.toString();
+ if (debugToStderr) {
+ System.err.printf("flushString(): %s\n", result);
+ }
+ return result;
}
/**
*/
@Override
public void flushPhysical() {
- String result = flushString();
- if ((cursorVisible) &&
- (cursorY <= height - 1) &&
- (cursorX <= width - 1)
- ) {
- result += terminal.cursor(true);
- result += terminal.gotoXY(cursorX, cursorY);
- } else {
- result += terminal.cursor(false);
- }
- terminal.getOutput().write(result);
- terminal.flush();
+ String result = flushString();
+ if ((cursorVisible)
+ && (cursorY <= height - 1)
+ && (cursorX <= width - 1)
+ ) {
+ result += terminal.cursor(true);
+ result += terminal.gotoXY(cursorX, cursorY);
+ } else {
+ result += terminal.cursor(false);
+ }
+ terminal.getOutput().write(result);
+ terminal.flush();
}
}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff