mirror of
https://github.com/GeyserMC/Geyser.git
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119 lines
4.8 KiB
Java
119 lines
4.8 KiB
Java
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/*
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* Copyright (c) 2019-2020 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*
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*/
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package org.geysermc.platform.standalone.gui;
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import javax.swing.*;
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import javax.swing.text.*;
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import java.awt.*;
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/**
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* This class was based on this code: https://stackoverflow.com/a/6899478/5299903
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*/
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public class ColorPane extends JTextPane {
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private static Color colorCurrent = ANSIColor.RESET.getColor();
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private String remaining = "";
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/**
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* Append the given string in the given color to the text pane
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* @param c The color
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* @param s The text
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*/
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private void append(Color c, String s) {
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StyleContext sc = StyleContext.getDefaultStyleContext();
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AttributeSet aset = sc.addAttribute(SimpleAttributeSet.EMPTY, StyleConstants.Foreground, c);
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int len = getDocument().getLength();
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try {
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getDocument().insertString(len, s, aset);
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} catch (BadLocationException e) {
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e.printStackTrace();
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}
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}
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/**
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* Extract the ANSI color codes from the string and add each part to the text pane
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*
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* @param s The text to parse
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*/
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public void appendANSI(String s) { // convert ANSI color codes first
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int aPos = 0; // current char position in addString
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int aIndex = 0; // index of next Escape sequence
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int mIndex = 0; // index of "m" terminating Escape sequence
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String tmpString = "";
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boolean stillSearching = true; // true until no more Escape sequences
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String addString = remaining + s;
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remaining = "";
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if (addString.length() > 0) {
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aIndex = addString.indexOf("\u001B"); // find first escape
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if (aIndex == -1) { // no escape/color change in this string, so just send it with current color
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append(colorCurrent, addString);
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return;
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}
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// otherwise There is an escape character in the string, so we must process it
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if (aIndex > 0) { // Escape is not first char, so send text up to first escape
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tmpString = addString.substring(0, aIndex);
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append(colorCurrent, tmpString);
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aPos = aIndex; // aPos is now at the beginning of the first escape sequence
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}
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// while there's text in the input buffer
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stillSearching = true;
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while (stillSearching) {
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mIndex = addString.indexOf("m", aPos); // find the end of the escape sequence
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if (mIndex < 0) { // the buffer ends halfway through the ansi string!
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remaining = addString.substring(aPos, addString.length());
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stillSearching = false;
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continue;
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} else {
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tmpString = addString.substring(aPos, mIndex+1);
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colorCurrent = ANSIColor.fromANSI(tmpString).getColor();
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}
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aPos = mIndex + 1;
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// now we have the color, send text that is in that color (up to next escape)
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aIndex = addString.indexOf("\u001B", aPos);
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if (aIndex == -1) { // if that was the last sequence of the input, send remaining text
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tmpString = addString.substring(aPos, addString.length());
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append(colorCurrent, tmpString);
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stillSearching = false;
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continue; // jump out of loop early, as the whole string has been sent now
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}
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// there is another escape sequence, so send part of the string and prepare for the next
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tmpString = addString.substring(aPos, aIndex);
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aPos = aIndex;
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append(colorCurrent, tmpString);
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}
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}
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}
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}
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