68 lines
2.3 KiB
C#
68 lines
2.3 KiB
C#
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using System;
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using System.Diagnostics;
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namespace Unity.CodeEditor.Rendering
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{
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/// <summary>
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/// Represents information about a character hit within a glyph run.
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/// </summary>
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/// <remarks>
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/// The CharacterHit structure provides information about the index of the first
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/// character that got hit as well as information about leading or trailing edge.
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/// </remarks>
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[DebuggerDisplay("CharacterHit({FirstCharacterIndex}, {TrailingLength})")]
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internal readonly struct CharacterHit : IEquatable<CharacterHit>
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="CharacterHit"/> structure.
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/// </summary>
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/// <param name="firstCharacterIndex">Index of the first character that got hit.</param>
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/// <param name="trailingLength">In the case of a leading edge, this value is 0. In the case of a trailing edge,
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/// this value is the number of code points until the next valid caret position.</param>
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[DebuggerStepThrough]
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internal CharacterHit(int firstCharacterIndex, int trailingLength = 0)
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{
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FirstCharacterIndex = firstCharacterIndex;
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TrailingLength = trailingLength;
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}
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/// <summary>
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/// Gets the index of the first character that got hit.
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/// </summary>
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internal int FirstCharacterIndex { get; }
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/// <summary>
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/// Gets the trailing length value for the character that got hit.
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/// </summary>
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internal int TrailingLength { get; }
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public bool Equals(CharacterHit other)
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{
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return FirstCharacterIndex == other.FirstCharacterIndex && TrailingLength == other.TrailingLength;
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}
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public override bool Equals(object obj)
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{
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return obj is CharacterHit other && Equals(other);
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}
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public override int GetHashCode()
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{
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unchecked
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{
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return FirstCharacterIndex * 397 ^ TrailingLength;
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}
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}
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public static bool operator ==(CharacterHit left, CharacterHit right)
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{
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return left.Equals(right);
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}
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public static bool operator !=(CharacterHit left, CharacterHit right)
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{
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return !left.Equals(right);
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}
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}
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}
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