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Color parsing improvements
- Added ColorHelper.TryFromHexString, a non-throwing version of FromHexString - Stopped the text formatter from throwing if a color can't be parsed
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4 changed files with 33 additions and 8 deletions
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@ -19,6 +19,10 @@ Additions
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- Added Zero, One, Linear and Clamp to Easings
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- Added GetRandomEntry and GetRandomWeightedEntry to SingleRandom
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- Added the ability to draw single corners of AutoTiling's extended auto tiles
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- Added ColorHelper.TryFromHexString, a non-throwing version of FromHexString
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Improvements
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- Stopped the text formatter throwing if a color can't be parsed
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Fixes
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- Fixed TextInput not working correctly when using surrogate pairs
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@ -44,7 +44,8 @@ namespace MLEM.Extended.Tiled {
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/// <param name="key">The key by which to get a property</param>
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/// <returns>The color property</returns>
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public static Color GetColor(this TiledMapProperties properties, string key) {
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return ColorHelper.FromHexString(properties.Get(key));
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ColorHelper.TryFromHexString(properties.Get(key), out var val);
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return val;
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}
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/// <summary>
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@ -1,3 +1,4 @@
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using System;
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using System.Globalization;
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using Microsoft.Xna.Framework;
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@ -64,16 +65,34 @@ namespace MLEM.Extensions {
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}
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/// <summary>
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/// Parses a hexadecimal string into a color.
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/// Parses a hexadecimal string into a color and throws a <see cref="FormatException"/> if parsing fails.
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/// The string can either be formatted as RRGGBB or AARRGGBB and can optionally start with a <c>#</c>.
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/// </summary>
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/// <param name="value">The string to parse.</param>
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/// <returns>The resulting color.</returns>
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/// <exception cref="FormatException">Thrown if parsing fails.</exception>
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public static Color FromHexString(string value) {
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if (!ColorHelper.TryFromHexString(value, out var val))
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throw new FormatException($"Cannot parse hex string {value}");
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return val;
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}
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/// <summary>
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/// Tries to parse a hexadecimal string into a color and returns whether a color was successfully parsed.
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/// The string can either be formatted as RRGGBB or AARRGGBB and can optionally start with a <c>#</c>.
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/// </summary>
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/// <param name="value">The string to parse.</param>
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/// <param name="color">The resulting color.</param>
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/// <returns>Whether parsing was successful.</returns>
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public static bool TryFromHexString(string value, out Color color) {
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if (value.StartsWith("#"))
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value = value.Substring(1);
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var val = int.Parse(value, NumberStyles.HexNumber);
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return value.Length > 6 ? ColorHelper.FromHexRgba(val) : ColorHelper.FromHexRgb(val);
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if (int.TryParse(value, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out var val)) {
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color = value.Length > 6 ? ColorHelper.FromHexRgba(val) : ColorHelper.FromHexRgb(val);
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return true;
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}
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color = default;
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return false;
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}
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}
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@ -102,7 +102,7 @@ namespace MLEM.Formatting {
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this.Codes.Add(new Regex("<b>"), (f, m, r) => new FontCode(m, r, fnt => fnt.Bold));
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this.Codes.Add(new Regex("<i>"), (f, m, r) => new FontCode(m, r, fnt => fnt.Italic));
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this.Codes.Add(new Regex(@"<s(?: #([0-9\w]{6,8}) (([+-.0-9]*)))?>"), (f, m, r) => new ShadowCode(m, r,
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m.Groups[1].Success ? ColorHelper.FromHexString(m.Groups[1].Value) : this.DefaultShadowColor,
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ColorHelper.TryFromHexString(m.Groups[1].Value, out var color) ? color : this.DefaultShadowColor,
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float.TryParse(m.Groups[2].Value, NumberStyles.Number, CultureInfo.InvariantCulture, out var offset) ? new Vector2(offset) : this.DefaultShadowOffset));
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this.Codes.Add(new Regex("<u>"), (f, m, r) => new UnderlineCode(m, r, this.LineThickness, this.UnderlineOffset));
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this.Codes.Add(new Regex("<st>"), (f, m, r) => new UnderlineCode(m, r, this.LineThickness, this.StrikethroughOffset));
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@ -111,7 +111,7 @@ namespace MLEM.Formatting {
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this.Codes.Add(new Regex(@"<sup(?: ([+-.0-9]+))?>"), (f, m, r) => new SubSupCode(m, r,
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float.TryParse(m.Groups[1].Value, NumberStyles.Number, CultureInfo.InvariantCulture, out var off) ? -off : this.DefaultSupOffset));
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this.Codes.Add(new Regex(@"<o(?: #([0-9\w]{6,8}) (([+-.0-9]*)))?>"), (f, m, r) => new OutlineCode(m, r,
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m.Groups[1].Success ? ColorHelper.FromHexString(m.Groups[1].Value) : this.DefaultOutlineColor,
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ColorHelper.TryFromHexString(m.Groups[1].Value, out var color) ? color : this.DefaultOutlineColor,
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float.TryParse(m.Groups[2].Value, NumberStyles.Number, CultureInfo.InvariantCulture, out var thickness) ? thickness : this.DefaultOutlineThickness,
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this.OutlineDiagonals));
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}
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@ -124,12 +124,13 @@ namespace MLEM.Formatting {
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this.Codes.Add(new Regex($"<c {c.Name}>"), (f, m, r) => new ColorCode(m, r, value));
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}
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}
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this.Codes.Add(new Regex(@"<c #([0-9\w]{6,8})>"), (f, m, r) => new ColorCode(m, r, ColorHelper.FromHexString(m.Groups[1].Value)));
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this.Codes.Add(new Regex(@"<c #([0-9\w]{6,8})>"), (f, m, r) => new ColorCode(m, r,
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ColorHelper.TryFromHexString(m.Groups[1].Value, out var color) ? color : Color.Red));
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}
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// animation codes
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if (hasAnimations) {
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this.Codes.Add(new Regex(@"<a wobbly(?: ([+-.0-9]*) ([+-.0-9]*))?>"), (f, m, r) => new WobblyCode(m, r,
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this.Codes.Add(new Regex("<a wobbly(?: ([+-.0-9]*) ([+-.0-9]*))?>"), (f, m, r) => new WobblyCode(m, r,
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float.TryParse(m.Groups[1].Value, NumberStyles.Number, CultureInfo.InvariantCulture, out var mod) ? mod : this.DefaultWobblyModifier,
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float.TryParse(m.Groups[2].Value, NumberStyles.Number, CultureInfo.InvariantCulture, out var heightMod) ? heightMod : this.DefaultWobblyHeight));
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}
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