+++ /dev/null
-/*
- * This file is part of lanterna (http://code.google.com/p/lanterna/).
- *
- * lanterna 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.
- *
- * 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 Lesser 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/>.
- *
- * Copyright (C) 2010-2015 Martin
- */
-package com.googlecode.lanterna;
-
-
-import java.awt.*;
-
-/**
- * This is an abstract base class for terminal color definitions. Since there are different ways of specifying terminal
- * colors, all with a different range of adoptions, this makes it possible to program an API against an implementation-
- * agnostic color definition. Please remember when using colors that not all terminals and terminal emulators supports
- * them. The 24-bit color mode is very unsupported, for example, and even the default Linux terminal doesn't support
- * the 256-color indexed mode.
- *
- * @author Martin
- */
-public interface TextColor {
- /**
- * Returns the byte sequence in between CSI and character 'm' that is used to enable this color as the foreground
- * color on an ANSI-compatible terminal.
- * @return Byte array out data to output in between of CSI and 'm'
- */
- byte[] getForegroundSGRSequence();
-
- /**
- * Returns the byte sequence in between CSI and character 'm' that is used to enable this color as the background
- * color on an ANSI-compatible terminal.
- * @return Byte array out data to output in between of CSI and 'm'
- */
- byte[] getBackgroundSGRSequence();
-
- /**
- * Converts this color to an AWT color object, assuming a standard VGA palette.
- * @return TextColor as an AWT Color
- */
- Color toColor();
-
- /**
- * This class represent classic ANSI colors that are likely to be very compatible with most terminal
- * implementations. It is limited to 8 colors (plus the 'default' color) but as a norm, using bold mode (SGR code)
- * will slightly alter the color, giving it a bit brighter tone, so in total this will give you 16 (+1) colors.
- * <p>
- * For more information, see http://en.wikipedia.org/wiki/File:Ansi.png
- */
- enum ANSI implements TextColor {
- BLACK((byte)0, 0, 0, 0),
- RED((byte)1, 170, 0, 0),
- GREEN((byte)2, 0, 170, 0),
- YELLOW((byte)3, 170, 85, 0),
- BLUE((byte)4, 0, 0, 170),
- MAGENTA((byte)5, 170, 0, 170),
- CYAN((byte)6, 0, 170, 170),
- WHITE((byte)7, 170, 170, 170),
- DEFAULT((byte)9, 0, 0, 0);
-
- private final byte index;
- private final Color color;
-
- ANSI(byte index, int red, int green, int blue) {
- this.index = index;
- this.color = new Color(red, green, blue);
- }
-
- @Override
- public byte[] getForegroundSGRSequence() {
- return new byte[] { (byte)'3', (byte)(48 + index)}; //48 is ascii code for '0'
- }
-
- @Override
- public byte[] getBackgroundSGRSequence() {
- return new byte[] { (byte)'4', (byte)(48 + index)}; //48 is ascii code for '0'
- }
-
- @Override
- public Color toColor() {
- return color;
- }
- }
-
- /**
- * This class represents a color expressed in the indexed XTerm 256 color extension, where each color is defined in a
- * lookup-table. All in all, there are 256 codes, but in order to know which one to know you either need to have the
- * table at hand, or you can use the two static helper methods which can help you convert from three 8-bit
- * RGB values to the closest approximate indexed color number. If you are interested, the 256 index values are
- * actually divided like this:<br>
- * 0 .. 15 - System colors, same as ANSI, but the actual rendered color depends on the terminal emulators color scheme<br>
- * 16 .. 231 - Forms a 6x6x6 RGB color cube<br>
- * 232 .. 255 - A gray scale ramp (without black and white endpoints)<br>
- * <p>
- * Support for indexed colors is somewhat widely adopted, not as much as the ANSI colors (TextColor.ANSI) but more
- * than the RGB (TextColor.RGB).
- * <p>
- * For more details on this, please see <a
- * href="https://github.com/robertknight/konsole/blob/master/user-doc/README.moreColors">
- * this</a> commit message to Konsole.
- */
- class Indexed implements TextColor {
- private static final byte[][] COLOR_TABLE = new byte[][] {
- //These are the standard 16-color VGA palette entries
- {(byte)0,(byte)0,(byte)0 },
- {(byte)170,(byte)0,(byte)0 },
- {(byte)0,(byte)170,(byte)0 },
- {(byte)170,(byte)85,(byte)0 },
- {(byte)0,(byte)0,(byte)170 },
- {(byte)170,(byte)0,(byte)170 },
- {(byte)0,(byte)170,(byte)170 },
- {(byte)170,(byte)170,(byte)170 },
- {(byte)85,(byte)85,(byte)85 },
- {(byte)255,(byte)85,(byte)85 },
- {(byte)85,(byte)255,(byte)85 },
- {(byte)255,(byte)255,(byte)85 },
- {(byte)85,(byte)85,(byte)255 },
- {(byte)255,(byte)85,(byte)255 },
- {(byte)85,(byte)255,(byte)255 },
- {(byte)255,(byte)255,(byte)255 },
-
- //Starting 6x6x6 RGB color cube from 16
- {(byte)0x00,(byte)0x00,(byte)0x00 },
- {(byte)0x00,(byte)0x00,(byte)0x5f },
- {(byte)0x00,(byte)0x00,(byte)0x87 },
- {(byte)0x00,(byte)0x00,(byte)0xaf },
- {(byte)0x00,(byte)0x00,(byte)0xd7 },
- {(byte)0x00,(byte)0x00,(byte)0xff },
- {(byte)0x00,(byte)0x5f,(byte)0x00 },
- {(byte)0x00,(byte)0x5f,(byte)0x5f },
- {(byte)0x00,(byte)0x5f,(byte)0x87 },
- {(byte)0x00,(byte)0x5f,(byte)0xaf },
- {(byte)0x00,(byte)0x5f,(byte)0xd7 },
- {(byte)0x00,(byte)0x5f,(byte)0xff },
- {(byte)0x00,(byte)0x87,(byte)0x00 },
- {(byte)0x00,(byte)0x87,(byte)0x5f },
- {(byte)0x00,(byte)0x87,(byte)0x87 },
- {(byte)0x00,(byte)0x87,(byte)0xaf },
- {(byte)0x00,(byte)0x87,(byte)0xd7 },
- {(byte)0x00,(byte)0x87,(byte)0xff },
- {(byte)0x00,(byte)0xaf,(byte)0x00 },
- {(byte)0x00,(byte)0xaf,(byte)0x5f },
- {(byte)0x00,(byte)0xaf,(byte)0x87 },
- {(byte)0x00,(byte)0xaf,(byte)0xaf },
- {(byte)0x00,(byte)0xaf,(byte)0xd7 },
- {(byte)0x00,(byte)0xaf,(byte)0xff },
- {(byte)0x00,(byte)0xd7,(byte)0x00 },
- {(byte)0x00,(byte)0xd7,(byte)0x5f },
- {(byte)0x00,(byte)0xd7,(byte)0x87 },
- {(byte)0x00,(byte)0xd7,(byte)0xaf },
- {(byte)0x00,(byte)0xd7,(byte)0xd7 },
- {(byte)0x00,(byte)0xd7,(byte)0xff },
- {(byte)0x00,(byte)0xff,(byte)0x00 },
- {(byte)0x00,(byte)0xff,(byte)0x5f },
- {(byte)0x00,(byte)0xff,(byte)0x87 },
- {(byte)0x00,(byte)0xff,(byte)0xaf },
- {(byte)0x00,(byte)0xff,(byte)0xd7 },
- {(byte)0x00,(byte)0xff,(byte)0xff },
- {(byte)0x5f,(byte)0x00,(byte)0x00 },
- {(byte)0x5f,(byte)0x00,(byte)0x5f },
- {(byte)0x5f,(byte)0x00,(byte)0x87 },
- {(byte)0x5f,(byte)0x00,(byte)0xaf },
- {(byte)0x5f,(byte)0x00,(byte)0xd7 },
- {(byte)0x5f,(byte)0x00,(byte)0xff },
- {(byte)0x5f,(byte)0x5f,(byte)0x00 },
- {(byte)0x5f,(byte)0x5f,(byte)0x5f },
- {(byte)0x5f,(byte)0x5f,(byte)0x87 },
- {(byte)0x5f,(byte)0x5f,(byte)0xaf },
- {(byte)0x5f,(byte)0x5f,(byte)0xd7 },
- {(byte)0x5f,(byte)0x5f,(byte)0xff },
- {(byte)0x5f,(byte)0x87,(byte)0x00 },
- {(byte)0x5f,(byte)0x87,(byte)0x5f },
- {(byte)0x5f,(byte)0x87,(byte)0x87 },
- {(byte)0x5f,(byte)0x87,(byte)0xaf },
- {(byte)0x5f,(byte)0x87,(byte)0xd7 },
- {(byte)0x5f,(byte)0x87,(byte)0xff },
- {(byte)0x5f,(byte)0xaf,(byte)0x00 },
- {(byte)0x5f,(byte)0xaf,(byte)0x5f },
- {(byte)0x5f,(byte)0xaf,(byte)0x87 },
- {(byte)0x5f,(byte)0xaf,(byte)0xaf },
- {(byte)0x5f,(byte)0xaf,(byte)0xd7 },
- {(byte)0x5f,(byte)0xaf,(byte)0xff },
- {(byte)0x5f,(byte)0xd7,(byte)0x00 },
- {(byte)0x5f,(byte)0xd7,(byte)0x5f },
- {(byte)0x5f,(byte)0xd7,(byte)0x87 },
- {(byte)0x5f,(byte)0xd7,(byte)0xaf },
- {(byte)0x5f,(byte)0xd7,(byte)0xd7 },
- {(byte)0x5f,(byte)0xd7,(byte)0xff },
- {(byte)0x5f,(byte)0xff,(byte)0x00 },
- {(byte)0x5f,(byte)0xff,(byte)0x5f },
- {(byte)0x5f,(byte)0xff,(byte)0x87 },
- {(byte)0x5f,(byte)0xff,(byte)0xaf },
- {(byte)0x5f,(byte)0xff,(byte)0xd7 },
- {(byte)0x5f,(byte)0xff,(byte)0xff },
- {(byte)0x87,(byte)0x00,(byte)0x00 },
- {(byte)0x87,(byte)0x00,(byte)0x5f },
- {(byte)0x87,(byte)0x00,(byte)0x87 },
- {(byte)0x87,(byte)0x00,(byte)0xaf },
- {(byte)0x87,(byte)0x00,(byte)0xd7 },
- {(byte)0x87,(byte)0x00,(byte)0xff },
- {(byte)0x87,(byte)0x5f,(byte)0x00 },
- {(byte)0x87,(byte)0x5f,(byte)0x5f },
- {(byte)0x87,(byte)0x5f,(byte)0x87 },
- {(byte)0x87,(byte)0x5f,(byte)0xaf },
- {(byte)0x87,(byte)0x5f,(byte)0xd7 },
- {(byte)0x87,(byte)0x5f,(byte)0xff },
- {(byte)0x87,(byte)0x87,(byte)0x00 },
- {(byte)0x87,(byte)0x87,(byte)0x5f },
- {(byte)0x87,(byte)0x87,(byte)0x87 },
- {(byte)0x87,(byte)0x87,(byte)0xaf },
- {(byte)0x87,(byte)0x87,(byte)0xd7 },
- {(byte)0x87,(byte)0x87,(byte)0xff },
- {(byte)0x87,(byte)0xaf,(byte)0x00 },
- {(byte)0x87,(byte)0xaf,(byte)0x5f },
- {(byte)0x87,(byte)0xaf,(byte)0x87 },
- {(byte)0x87,(byte)0xaf,(byte)0xaf },
- {(byte)0x87,(byte)0xaf,(byte)0xd7 },
- {(byte)0x87,(byte)0xaf,(byte)0xff },
- {(byte)0x87,(byte)0xd7,(byte)0x00 },
- {(byte)0x87,(byte)0xd7,(byte)0x5f },
- {(byte)0x87,(byte)0xd7,(byte)0x87 },
- {(byte)0x87,(byte)0xd7,(byte)0xaf },
- {(byte)0x87,(byte)0xd7,(byte)0xd7 },
- {(byte)0x87,(byte)0xd7,(byte)0xff },
- {(byte)0x87,(byte)0xff,(byte)0x00 },
- {(byte)0x87,(byte)0xff,(byte)0x5f },
- {(byte)0x87,(byte)0xff,(byte)0x87 },
- {(byte)0x87,(byte)0xff,(byte)0xaf },
- {(byte)0x87,(byte)0xff,(byte)0xd7 },
- {(byte)0x87,(byte)0xff,(byte)0xff },
- {(byte)0xaf,(byte)0x00,(byte)0x00 },
- {(byte)0xaf,(byte)0x00,(byte)0x5f },
- {(byte)0xaf,(byte)0x00,(byte)0x87 },
- {(byte)0xaf,(byte)0x00,(byte)0xaf },
- {(byte)0xaf,(byte)0x00,(byte)0xd7 },
- {(byte)0xaf,(byte)0x00,(byte)0xff },
- {(byte)0xaf,(byte)0x5f,(byte)0x00 },
- {(byte)0xaf,(byte)0x5f,(byte)0x5f },
- {(byte)0xaf,(byte)0x5f,(byte)0x87 },
- {(byte)0xaf,(byte)0x5f,(byte)0xaf },
- {(byte)0xaf,(byte)0x5f,(byte)0xd7 },
- {(byte)0xaf,(byte)0x5f,(byte)0xff },
- {(byte)0xaf,(byte)0x87,(byte)0x00 },
- {(byte)0xaf,(byte)0x87,(byte)0x5f },
- {(byte)0xaf,(byte)0x87,(byte)0x87 },
- {(byte)0xaf,(byte)0x87,(byte)0xaf },
- {(byte)0xaf,(byte)0x87,(byte)0xd7 },
- {(byte)0xaf,(byte)0x87,(byte)0xff },
- {(byte)0xaf,(byte)0xaf,(byte)0x00 },
- {(byte)0xaf,(byte)0xaf,(byte)0x5f },
- {(byte)0xaf,(byte)0xaf,(byte)0x87 },
- {(byte)0xaf,(byte)0xaf,(byte)0xaf },
- {(byte)0xaf,(byte)0xaf,(byte)0xd7 },
- {(byte)0xaf,(byte)0xaf,(byte)0xff },
- {(byte)0xaf,(byte)0xd7,(byte)0x00 },
- {(byte)0xaf,(byte)0xd7,(byte)0x5f },
- {(byte)0xaf,(byte)0xd7,(byte)0x87 },
- {(byte)0xaf,(byte)0xd7,(byte)0xaf },
- {(byte)0xaf,(byte)0xd7,(byte)0xd7 },
- {(byte)0xaf,(byte)0xd7,(byte)0xff },
- {(byte)0xaf,(byte)0xff,(byte)0x00 },
- {(byte)0xaf,(byte)0xff,(byte)0x5f },
- {(byte)0xaf,(byte)0xff,(byte)0x87 },
- {(byte)0xaf,(byte)0xff,(byte)0xaf },
- {(byte)0xaf,(byte)0xff,(byte)0xd7 },
- {(byte)0xaf,(byte)0xff,(byte)0xff },
- {(byte)0xd7,(byte)0x00,(byte)0x00 },
- {(byte)0xd7,(byte)0x00,(byte)0x5f },
- {(byte)0xd7,(byte)0x00,(byte)0x87 },
- {(byte)0xd7,(byte)0x00,(byte)0xaf },
- {(byte)0xd7,(byte)0x00,(byte)0xd7 },
- {(byte)0xd7,(byte)0x00,(byte)0xff },
- {(byte)0xd7,(byte)0x5f,(byte)0x00 },
- {(byte)0xd7,(byte)0x5f,(byte)0x5f },
- {(byte)0xd7,(byte)0x5f,(byte)0x87 },
- {(byte)0xd7,(byte)0x5f,(byte)0xaf },
- {(byte)0xd7,(byte)0x5f,(byte)0xd7 },
- {(byte)0xd7,(byte)0x5f,(byte)0xff },
- {(byte)0xd7,(byte)0x87,(byte)0x00 },
- {(byte)0xd7,(byte)0x87,(byte)0x5f },
- {(byte)0xd7,(byte)0x87,(byte)0x87 },
- {(byte)0xd7,(byte)0x87,(byte)0xaf },
- {(byte)0xd7,(byte)0x87,(byte)0xd7 },
- {(byte)0xd7,(byte)0x87,(byte)0xff },
- {(byte)0xd7,(byte)0xaf,(byte)0x00 },
- {(byte)0xd7,(byte)0xaf,(byte)0x5f },
- {(byte)0xd7,(byte)0xaf,(byte)0x87 },
- {(byte)0xd7,(byte)0xaf,(byte)0xaf },
- {(byte)0xd7,(byte)0xaf,(byte)0xd7 },
- {(byte)0xd7,(byte)0xaf,(byte)0xff },
- {(byte)0xd7,(byte)0xd7,(byte)0x00 },
- {(byte)0xd7,(byte)0xd7,(byte)0x5f },
- {(byte)0xd7,(byte)0xd7,(byte)0x87 },
- {(byte)0xd7,(byte)0xd7,(byte)0xaf },
- {(byte)0xd7,(byte)0xd7,(byte)0xd7 },
- {(byte)0xd7,(byte)0xd7,(byte)0xff },
- {(byte)0xd7,(byte)0xff,(byte)0x00 },
- {(byte)0xd7,(byte)0xff,(byte)0x5f },
- {(byte)0xd7,(byte)0xff,(byte)0x87 },
- {(byte)0xd7,(byte)0xff,(byte)0xaf },
- {(byte)0xd7,(byte)0xff,(byte)0xd7 },
- {(byte)0xd7,(byte)0xff,(byte)0xff },
- {(byte)0xff,(byte)0x00,(byte)0x00 },
- {(byte)0xff,(byte)0x00,(byte)0x5f },
- {(byte)0xff,(byte)0x00,(byte)0x87 },
- {(byte)0xff,(byte)0x00,(byte)0xaf },
- {(byte)0xff,(byte)0x00,(byte)0xd7 },
- {(byte)0xff,(byte)0x00,(byte)0xff },
- {(byte)0xff,(byte)0x5f,(byte)0x00 },
- {(byte)0xff,(byte)0x5f,(byte)0x5f },
- {(byte)0xff,(byte)0x5f,(byte)0x87 },
- {(byte)0xff,(byte)0x5f,(byte)0xaf },
- {(byte)0xff,(byte)0x5f,(byte)0xd7 },
- {(byte)0xff,(byte)0x5f,(byte)0xff },
- {(byte)0xff,(byte)0x87,(byte)0x00 },
- {(byte)0xff,(byte)0x87,(byte)0x5f },
- {(byte)0xff,(byte)0x87,(byte)0x87 },
- {(byte)0xff,(byte)0x87,(byte)0xaf },
- {(byte)0xff,(byte)0x87,(byte)0xd7 },
- {(byte)0xff,(byte)0x87,(byte)0xff },
- {(byte)0xff,(byte)0xaf,(byte)0x00 },
- {(byte)0xff,(byte)0xaf,(byte)0x5f },
- {(byte)0xff,(byte)0xaf,(byte)0x87 },
- {(byte)0xff,(byte)0xaf,(byte)0xaf },
- {(byte)0xff,(byte)0xaf,(byte)0xd7 },
- {(byte)0xff,(byte)0xaf,(byte)0xff },
- {(byte)0xff,(byte)0xd7,(byte)0x00 },
- {(byte)0xff,(byte)0xd7,(byte)0x5f },
- {(byte)0xff,(byte)0xd7,(byte)0x87 },
- {(byte)0xff,(byte)0xd7,(byte)0xaf },
- {(byte)0xff,(byte)0xd7,(byte)0xd7 },
- {(byte)0xff,(byte)0xd7,(byte)0xff },
- {(byte)0xff,(byte)0xff,(byte)0x00 },
- {(byte)0xff,(byte)0xff,(byte)0x5f },
- {(byte)0xff,(byte)0xff,(byte)0x87 },
- {(byte)0xff,(byte)0xff,(byte)0xaf },
- {(byte)0xff,(byte)0xff,(byte)0xd7 },
- {(byte)0xff,(byte)0xff,(byte)0xff },
-
- //Grey-scale ramp from 232
- {(byte)0x08,(byte)0x08,(byte)0x08 },
- {(byte)0x12,(byte)0x12,(byte)0x12 },
- {(byte)0x1c,(byte)0x1c,(byte)0x1c },
- {(byte)0x26,(byte)0x26,(byte)0x26 },
- {(byte)0x30,(byte)0x30,(byte)0x30 },
- {(byte)0x3a,(byte)0x3a,(byte)0x3a },
- {(byte)0x44,(byte)0x44,(byte)0x44 },
- {(byte)0x4e,(byte)0x4e,(byte)0x4e },
- {(byte)0x58,(byte)0x58,(byte)0x58 },
- {(byte)0x62,(byte)0x62,(byte)0x62 },
- {(byte)0x6c,(byte)0x6c,(byte)0x6c },
- {(byte)0x76,(byte)0x76,(byte)0x76 },
- {(byte)0x80,(byte)0x80,(byte)0x80 },
- {(byte)0x8a,(byte)0x8a,(byte)0x8a },
- {(byte)0x94,(byte)0x94,(byte)0x94 },
- {(byte)0x9e,(byte)0x9e,(byte)0x9e },
- {(byte)0xa8,(byte)0xa8,(byte)0xa8 },
- {(byte)0xb2,(byte)0xb2,(byte)0xb2 },
- {(byte)0xbc,(byte)0xbc,(byte)0xbc },
- {(byte)0xc6,(byte)0xc6,(byte)0xc6 },
- {(byte)0xd0,(byte)0xd0,(byte)0xd0 },
- {(byte)0xda,(byte)0xda,(byte)0xda },
- {(byte)0xe4,(byte)0xe4,(byte)0xe4 },
- {(byte)0xee,(byte)0xee,(byte)0xee }
- };
-
- private final int colorIndex;
- private final Color awtColor;
-
- /**
- * Creates a new TextColor using the XTerm 256 color indexed mode, with the specified index value. You must
- * choose a value between 0 and 255.
- * @param colorIndex Index value to use for this color.
- */
- public Indexed(int colorIndex) {
- if(colorIndex > 255 || colorIndex < 0) {
- throw new IllegalArgumentException("Cannot create a Color.Indexed with a color index of " + colorIndex +
- ", must be in the range of 0-255");
- }
- this.colorIndex = colorIndex;
- this.awtColor = new Color(COLOR_TABLE[colorIndex][0] & 0x000000ff,
- COLOR_TABLE[colorIndex][1] & 0x000000ff,
- COLOR_TABLE[colorIndex][2] & 0x000000ff);
- }
-
- @Override
- public byte[] getForegroundSGRSequence() {
- return ("38;5;" + colorIndex).getBytes();
- }
-
- @Override
- public byte[] getBackgroundSGRSequence() {
- return ("48;5;" + colorIndex).getBytes();
- }
-
- @Override
- public Color toColor() {
- return awtColor;
- }
-
- @Override
- public String toString() {
- return "{IndexedColor:" + colorIndex + "}";
- }
-
- @Override
- public int hashCode() {
- int hash = 3;
- hash = 43 * hash + this.colorIndex;
- return hash;
- }
-
- @Override
- public boolean equals(Object obj) {
- if(obj == null) {
- return false;
- }
- if(getClass() != obj.getClass()) {
- return false;
- }
- final Indexed other = (Indexed) obj;
- return this.colorIndex == other.colorIndex;
- }
-
- /**
- * Picks out a color approximated from the supplied RGB components
- * @param red Red intensity, from 0 to 255
- * @param green Red intensity, from 0 to 255
- * @param blue Red intensity, from 0 to 255
- * @return Nearest color from the 6x6x6 RGB color cube or from the 24 entries grey-scale ramp (whichever is closest)
- */
- public static Indexed fromRGB(int red, int green, int blue) {
- if(red < 0 || red > 255) {
- throw new IllegalArgumentException("fromRGB: red is outside of valid range (0-255)");
- }
- if(green < 0 || green > 255) {
- throw new IllegalArgumentException("fromRGB: green is outside of valid range (0-255)");
- }
- if(blue < 0 || blue > 255) {
- throw new IllegalArgumentException("fromRGB: blue is outside of valid range (0-255)");
- }
-
- int rescaledRed = (int)(((double)red / 255.0) * 5.0);
- int rescaledGreen = (int)(((double)green / 255.0) * 5.0);
- int rescaledBlue = (int)(((double)blue / 255.0) * 5.0);
-
- int index = rescaledBlue + (6 * rescaledGreen) + (36 * rescaledRed) + 16;
- Indexed fromColorCube = new Indexed(index);
- Indexed fromGreyRamp = fromGreyRamp((red + green + blue) / 3);
-
- //Now figure out which one is closest
- Color colored = fromColorCube.toColor();
- Color grey = fromGreyRamp.toColor();
- int coloredDistance = ((red - colored.getRed()) * (red - colored.getRed())) +
- ((green - colored.getGreen()) * (green - colored.getGreen())) +
- ((blue - colored.getBlue()) * (blue - colored.getBlue()));
- int greyDistance = ((red - grey.getRed()) * (red - grey.getRed())) +
- ((green - grey.getGreen()) * (green - grey.getGreen())) +
- ((blue - grey.getBlue()) * (blue - grey.getBlue()));
- if(coloredDistance < greyDistance) {
- return fromColorCube;
- }
- else {
- return fromGreyRamp;
- }
- }
-
- /**
- * Picks out a color from the grey-scale ramp area of the color index.
- * @param intensity Intensity, 0 - 255
- * @return Indexed color from the grey-scale ramp which is the best match for the supplied intensity
- */
- private static Indexed fromGreyRamp(int intensity) {
- int rescaled = (int)(((double)intensity / 255.0) * 23.0) + 232;
- return new Indexed(rescaled);
- }
- }
-
- /**
- * This class can be used to specify a color in 24-bit color space (RGB with 8-bit resolution per color). Please be
- * aware that only a few terminal support 24-bit color control codes, please avoid using this class unless you know
- * all users will have compatible terminals. For details, please see
- * <a href="https://github.com/robertknight/konsole/blob/master/user-doc/README.moreColors">
- * this</a> commit log. Behavior on terminals that don't support these codes is undefined.
- */
- class RGB implements TextColor {
- private final Color color;
-
- /**
- * This class can be used to specify a color in 24-bit color space (RGB with 8-bit resolution per color). Please be
- * aware that only a few terminal support 24-bit color control codes, please avoid using this class unless you know
- * all users will have compatible terminals. For details, please see
- * <a href="https://github.com/robertknight/konsole/blob/master/user-doc/README.moreColors">
- * this</a> commit log. Behavior on terminals that don't support these codes is undefined.
- *
- * @param r Red intensity, from 0 to 255
- * @param g Green intensity, from 0 to 255
- * @param b Blue intensity, from 0 to 255
- */
- public RGB(int r, int g, int b) {
- if(r < 0 || r > 255) {
- throw new IllegalArgumentException("RGB: r is outside of valid range (0-255)");
- }
- if(g < 0 || g > 255) {
- throw new IllegalArgumentException("RGB: g is outside of valid range (0-255)");
- }
- if(b < 0 || b > 255) {
- throw new IllegalArgumentException("RGB: b is outside of valid range (0-255)");
- }
- this.color = new Color(r, g, b);
- }
-
- @Override
- public byte[] getForegroundSGRSequence() {
- return ("38;2;" + getRed() + ";" + getGreen() + ";" + getBlue()).getBytes();
- }
-
- @Override
- public byte[] getBackgroundSGRSequence() {
- return ("48;2;" + getRed() + ";" + getGreen() + ";" + getBlue()).getBytes();
- }
-
- @Override
- public Color toColor() {
- return color;
- }
-
- /**
- * @return Red intensity of this color, from 0 to 255
- */
- public int getRed() {
- return color.getRed();
- }
-
- /**
- * @return Green intensity of this color, from 0 to 255
- */
- public int getGreen() {
- return color.getGreen();
- }
-
- /**
- * @return Blue intensity of this color, from 0 to 255
- */
- public int getBlue() {
- return color.getBlue();
- }
-
- @Override
- public String toString() {
- return "{RGB:" + getRed() + "," + getGreen() + "," + getBlue() + "}";
- }
-
- @Override
- public int hashCode() {
- int hash = 7;
- hash = 29 * hash + color.hashCode();
- return hash;
- }
-
- @SuppressWarnings("SimplifiableIfStatement")
- @Override
- public boolean equals(Object obj) {
- if(obj == null) {
- return false;
- }
- if(getClass() != obj.getClass()) {
- return false;
- }
- final RGB other = (RGB) obj;
- return color.equals(other.color);
- }
- }
-}
git://git.nikiroo.be / jvcard.git / blobdiff