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prevent unnecessary allocations in GenericFont

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Ell 2021-11-27 23:04:06 +01:00
parent 53b93a34f8
commit 293602269b
1 changed files with 12 additions and 3 deletions
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15
MLEM/Font/GenericFont.cs
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@ -46,6 +46,15 @@ namespace MLEM.Font {
/// </summary> /// </summary>
public abstract float LineHeight { get; } public abstract float LineHeight { get; }
private readonly Func<int, GenericFont> identity;
/// <summary>
/// Creates a new generic font with the default settings
/// </summary>
public GenericFont() {
this.identity = i => this;
}
/// <summary> /// <summary>
/// Measures the width of the given character with the default scale for use in <see cref="MeasureString"/>. /// Measures the width of the given character with the default scale for use in <see cref="MeasureString"/>.
/// Note that this method does not support <see cref="Nbsp"/>, <see cref="Zwsp"/> and <see cref="OneEmSpace"/> for most generic fonts, which is why <see cref="MeasureString"/> should be used even for single characters. /// Note that this method does not support <see cref="Nbsp"/>, <see cref="Zwsp"/> and <see cref="OneEmSpace"/> for most generic fonts, which is why <see cref="MeasureString"/> should be used even for single characters.
@ -89,7 +98,7 @@ namespace MLEM.Font {
/// <param name="ignoreTrailingSpaces">Whether trailing whitespace should be ignored in the returned size, causing the end of each line to be effectively trimmed</param> /// <param name="ignoreTrailingSpaces">Whether trailing whitespace should be ignored in the returned size, causing the end of each line to be effectively trimmed</param>
/// <returns>The size of the string when drawn with this font</returns> /// <returns>The size of the string when drawn with this font</returns>
public Vector2 MeasureString(string text, bool ignoreTrailingSpaces = false) { public Vector2 MeasureString(string text, bool ignoreTrailingSpaces = false) {
return MeasureString(i => this, text, ignoreTrailingSpaces); return MeasureString(this.identity, text, ignoreTrailingSpaces);
} }
/// <summary> /// <summary>
@ -103,7 +112,7 @@ namespace MLEM.Font {
/// <param name="ellipsis">The characters to add to the end of the string if it is too long</param> /// <param name="ellipsis">The characters to add to the end of the string if it is too long</param>
/// <returns>The truncated string, or the same string if it is shorter than the maximum width</returns> /// <returns>The truncated string, or the same string if it is shorter than the maximum width</returns>
public string TruncateString(string text, float width, float scale, bool fromBack = false, string ellipsis = "") { public string TruncateString(string text, float width, float scale, bool fromBack = false, string ellipsis = "") {
return TruncateString(i => this, text, width, scale, fromBack, ellipsis); return TruncateString(this.identity, text, width, scale, fromBack, ellipsis);
} }
/// <summary> /// <summary>
@ -129,7 +138,7 @@ namespace MLEM.Font {
/// <param name="scale">The scale to use for width measurements</param> /// <param name="scale">The scale to use for width measurements</param>
/// <returns>The split string as an enumerable of split sections</returns> /// <returns>The split string as an enumerable of split sections</returns>
public IEnumerable<string> SplitStringSeparate(string text, float width, float scale) { public IEnumerable<string> SplitStringSeparate(string text, float width, float scale) {
return SplitStringSeparate(i => this, text, width, scale); return SplitStringSeparate(this.identity, text, width, scale);
} }
internal static Vector2 MeasureString(Func<int, GenericFont> fontFunction, string text, bool ignoreTrailingSpaces) { internal static Vector2 MeasureString(Func<int, GenericFont> fontFunction, string text, bool ignoreTrailingSpaces) {