mirror of
https://github.com/Ellpeck/MLEM.git
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145 lines
No EOL
6.7 KiB
C#
145 lines
No EOL
6.7 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Text.RegularExpressions;
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using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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using MLEM.Extensions;
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using MLEM.Font;
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using MLEM.Misc;
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using MLEM.Textures;
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namespace MLEM.Formatting {
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public static class TextFormatting {
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public static readonly Dictionary<Regex, Func<Match, FormattingCode>> FormattingCodes = new Dictionary<Regex, Func<Match, FormattingCode>>();
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private static readonly Dictionary<IGenericFont, string> OneEmStrings = new Dictionary<IGenericFont, string>();
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private static Regex formatRegex;
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static TextFormatting() {
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SetFormatIndicators('[', ']');
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// style codes
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FormattingCodes[new Regex("regular")] = m => new FormattingCode(TextStyle.Regular);
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FormattingCodes[new Regex("italic")] = m => new FormattingCode(TextStyle.Italic);
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FormattingCodes[new Regex("bold")] = m => new FormattingCode(TextStyle.Bold);
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FormattingCodes[new Regex("shadow")] = m => new FormattingCode(TextStyle.Shadow);
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// color codes
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var colors = typeof(Color).GetProperties();
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foreach (var color in colors) {
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if (color.GetGetMethod().IsStatic)
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FormattingCodes[new Regex(color.Name.ToLowerInvariant())] = m => new FormattingCode((Color) color.GetValue(null));
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}
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// animations
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FormattingCodes[new Regex("unanimated")] = m => new AnimationCode(AnimationCode.Default);
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FormattingCodes[new Regex("wobbly")] = m => new AnimationCode(AnimationCode.Wobbly);
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FormattingCodes[new Regex("typing")] = m => new AnimationCode(AnimationCode.Typing);
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}
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public static void SetFormatIndicators(char opener, char closer) {
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// escape the opener and closer so that any character can be used
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var op = "\\" + opener;
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var cl = "\\" + closer;
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// find any text that is surrounded by the opener and closer
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formatRegex = new Regex($"{op}[^{op}{cl}]*{cl}");
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}
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public static string GetOneEmString(IGenericFont font) {
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if (!OneEmStrings.TryGetValue(font, out var strg)) {
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strg = " ";
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while (font.MeasureString(strg + ' ').X < font.LineHeight)
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strg += ' ';
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OneEmStrings[font] = strg;
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}
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return strg;
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}
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public static string RemoveFormatting(this string s, IGenericFont font) {
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return formatRegex.Replace(s, match => {
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var code = FromMatch(match);
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return code != null ? code.GetReplacementString(font) : string.Empty;
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});
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}
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public static FormattingCodeCollection GetFormattingCodes(this string s, IGenericFont font) {
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var codes = new FormattingCodeCollection();
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var codeLengths = 0;
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foreach (Match match in formatRegex.Matches(s)) {
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var code = FromMatch(match);
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if (code == null)
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continue;
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codes[match.Index - codeLengths] = code;
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codeLengths += match.Length - code.GetReplacementString(font).Length;
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}
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return codes;
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}
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public static void DrawFormattedString(this IGenericFont regularFont, SpriteBatch batch, Vector2 pos, string text, FormattingCodeCollection codes, Color color, float scale, IGenericFont boldFont = null, IGenericFont italicFont = null, float depth = 0, FormatSettings formatSettings = null) {
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var settings = formatSettings ?? FormatSettings.Default;
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var currColor = color;
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var currFont = regularFont;
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var currStyle = TextStyle.Regular;
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var currAnim = AnimationCode.DefaultCode;
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var animStart = 0;
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var innerOffset = new Vector2();
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for (var i = 0; i < text.Length; i++) {
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// check if the current character's index has a formatting code
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codes.TryGetValue(i, out var code);
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if (code != null) {
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// if so, apply it
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switch (code.CodeType) {
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case FormattingCode.Type.Color:
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currColor = code.Color.CopyAlpha(color);
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break;
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case FormattingCode.Type.Style:
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switch (code.Style) {
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case TextStyle.Regular:
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currFont = regularFont;
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break;
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case TextStyle.Bold:
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currFont = boldFont ?? regularFont;
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break;
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case TextStyle.Italic:
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currFont = italicFont ?? regularFont;
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break;
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}
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currStyle = code.Style;
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break;
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case FormattingCode.Type.Icon:
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batch.Draw(code.Icon.CurrentRegion, new RectangleF(pos + innerOffset, new Vector2(regularFont.LineHeight * scale)), color, 0, Vector2.Zero, SpriteEffects.None, depth);
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break;
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case FormattingCode.Type.Animation:
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currAnim = (AnimationCode) code;
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animStart = i;
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break;
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}
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}
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var c = text[i];
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var cSt = c.ToString();
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if (c == '\n') {
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innerOffset.X = 0;
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innerOffset.Y += regularFont.LineHeight * scale;
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} else {
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if (currStyle == TextStyle.Shadow)
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currAnim.Draw(currAnim, settings, currFont, batch, text, i, animStart, cSt, pos + innerOffset + settings.DropShadowOffset * scale, settings.DropShadowColor, scale, depth);
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currAnim.Draw(currAnim, settings, currFont, batch, text, i, animStart, cSt, pos + innerOffset, currColor, scale, depth);
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innerOffset.X += regularFont.MeasureString(cSt).X * scale;
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}
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}
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}
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private static FormattingCode FromMatch(Capture match) {
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var rawCode = match.Value.Substring(1, match.Value.Length - 2).ToLowerInvariant();
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foreach (var code in FormattingCodes) {
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var m = code.Key.Match(rawCode);
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if (m.Success)
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return code.Value(m);
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}
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return null;
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}
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}
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} |