TitleColorHelper/MineworldsTextColorAlternator/Form1.cs

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;

namespace TitleColorHelper
{
    public partial class Form1 : Form
    {
        public class SubstringInfo
        {
            public string String { get; private set; }
            public Color Color { get; private set; }

            public SubstringInfo(string str, Color clr)
            {
                String = str;
                Color = clr;
            }
        }

        private static Dictionary<char, Color> COLOR_MAP = new Dictionary<char, Color>()
        {
            { '0', Color.FromArgb(  0,   0,   0) },
            { '1', Color.FromArgb(  0,   0, 170) },
            { '2', Color.FromArgb(  0, 170,   0) },
            { '3', Color.FromArgb(  0, 170, 170) },
            { '4', Color.FromArgb(170,   0,   0) },
            { '5', Color.FromArgb(170,   0, 170) },
            { '6', Color.FromArgb(254, 170,   0) },
            { '7', Color.FromArgb(170, 170, 170) },
            { '8', Color.FromArgb( 85,  85,  85) },
            { '9', Color.FromArgb( 85,  85, 254) },
            { 'a', Color.FromArgb( 85, 254,  85) },
            { 'b', Color.FromArgb( 85, 254, 254) },
            { 'c', Color.FromArgb(254,  85,  85) },
            { 'd', Color.FromArgb(254,  85, 254) },
            { 'e', Color.FromArgb(254, 254,  85) },
            { 'f', Color.FromArgb(254, 254, 254) },
        };


        public static SubstringInfo[] CalculateSubstringInfos(string text)
        {
            if (text == null || text.Equals(string.Empty))
            {
                return new SubstringInfo[0];
            }
            char colorChar = '&';
            char? color = null;
            string tmpText = "";
            List<SubstringInfo> list = new List<SubstringInfo>();
            for (int i = 0; i < text.Length - 1; i++)
            {
                char charAt = text[i];
                if (charAt != colorChar)
                {
                    tmpText += charAt;
                    continue;
                }
                char charAtNext = text[i + 1];
                if (!COLOR_MAP.ContainsKey(charAtNext))
                {
                    continue;
                }
                if (color != null)
                {
                    list.Add(new SubstringInfo(tmpText, COLOR_MAP[color.Value]));
                    tmpText = "";
                }
                color = charAtNext;
                i++;
            }
            tmpText += text[text.Length - 1];
            list.Add(new SubstringInfo(tmpText, COLOR_MAP[color.HasValue ? color.Value : 'f']));
            return list.ToArray();
        }

        public Form1()
        {
            InitializeComponent();
        }

        private void ButtonCalculate_Click(object sender, EventArgs e)
        {
            var text = textBoxText.Text;
            var textChars = text.ToCharArray();
            var newText = "";
            int skipped = 0;
            for (int i = 0; i < textChars.Length; i++)
            {
                if (checkBoxSkipSpace.Checked && textChars[i] == ' ') skipped++;
                else if (((i - skipped) / (int)numericUpDown1.Value) % 2 == 0) newText += textBoxColorOne.Text;
                else newText += textBoxColorTwo.Text;
                newText += textChars[i];
            }
            listBox1.Items.Add(newText);
        }

        private void ListBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (listBox1.SelectedIndex == -1)
            {
                return;
            }
            string text = listBox1.SelectedItem as string;
            if (text == null || text.Equals(string.Empty))
            {
                return;
            }
            Clipboard.SetText(text);
        }

        private void ListBox1_DrawItem(object sender, DrawItemEventArgs e)
        {
            if (e.Index == -1)
            {
                return;
            }
            e.DrawBackground();
            using (Graphics g = e.Graphics)
            {
                g.FillRectangle(new SolidBrush(e.BackColor), e.Bounds);

                string text = listBox1.Items[e.Index] as string;

                float x = e.Bounds.X;

                SubstringInfo[] infos = CalculateSubstringInfos(text);
                float removeX = g.MeasureString("..", e.Font).Width;
                foreach (var info in infos)
                {
                    g.DrawString(info.String, e.Font, new SolidBrush(info.Color), new PointF(x, e.Bounds.Y));
                    x += g.MeasureString($".{info.String}.", e.Font).Width - removeX;
                }

                e.DrawFocusRectangle();
            }
        }

        private void Form1_Resize(object sender, EventArgs e)
        {
            listBox1.Size = new Size(Size.Width - 320, listBox1.Size.Height);
        }

        private void ExitToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void AboutToolStripMenuItem_Click(object sender, EventArgs e)
        {
            new AboutBox1().Show();
        }
    }
}