mirror of https://github.com/dahall/Vanara.git
86 lines
3.9 KiB
C#
86 lines
3.9 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace Vanara.PInvoke
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{
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/// <summary>The RGBQUAD structure describes a color consisting of relative intensities of red, green, and blue.</summary>
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[PInvokeData("Wingdi.h", MSDNShortId = "dd162938")]
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[StructLayout(LayoutKind.Sequential, Size = 4)]
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public struct RGBQUAD : IEquatable<RGBQUAD>
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{
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/// <summary>The intensity of blue in the color.</summary>
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public byte rgbBlue;
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/// <summary>The intensity of green in the color.</summary>
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public byte rgbGreen;
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/// <summary>The intensity of red in the color.</summary>
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public byte rgbRed;
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/// <summary>This member is reserved and must be zero.</summary>
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public byte rgbReserved;
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/// <summary>Initializes a new instance of the <see cref="RGBQUAD"/> struct.</summary>
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/// <param name="r">The intensity of the red color.</param>
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/// <param name="g">The intensity of the green color.</param>
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/// <param name="b">The intensity of the blue color.</param>
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public RGBQUAD(byte r, byte g, byte b)
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{
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rgbRed = r;
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rgbGreen = g;
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rgbBlue = b;
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rgbReserved = 0;
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}
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/// <summary>Gets a value indicating whether any transparency is defined.</summary>
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/// <value><see langword="true"/> if this value is transparent; otherwise, <see langword="false"/>.</value>
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public bool IsTransparent => rgbReserved == 0;
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/// <summary>Gets or sets the color associated with the <see cref="RGBQUAD"/> structure.</summary>
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/// <value>The color.</value>
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public COLORREF Color
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{
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get => new(rgbRed, rgbGreen, rgbBlue) { A = rgbReserved };
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set { rgbReserved = value.A; rgbBlue = value.B; rgbGreen = value.G; rgbRed = value.R; }
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}
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/// <inheritdoc/>
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public override bool Equals(object obj) => obj is RGBQUAD q && Equals(q);
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/// <summary>Determines whether the specified object is equal to the current object.</summary>
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/// <param name="q">The object to compare with the current object.</param>
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/// <returns><see langword="true"/> if the specified object is equal to the current object; otherwise, <see langword="false"/>.</returns>
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public bool Equals(RGBQUAD q) => q.rgbBlue == rgbBlue && q.rgbGreen == rgbGreen && q.rgbRed == rgbRed && q.rgbReserved == rgbReserved;
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/// <inheritdoc/>
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public override int GetHashCode() => unchecked((int)(uint)this);
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/// <inheritdoc/>
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public override string ToString() => $"{{R={rgbRed},G={rgbGreen},B={rgbBlue}}}";
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/// <summary>Performs an implicit conversion from <see cref="RGBQUAD"/> to <see cref="uint"/>.</summary>
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/// <param name="c">The <see cref="RGBQUAD"/> value.</param>
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/// <returns>The result of the conversion.</returns>
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public static implicit operator uint(RGBQUAD c) { unsafe { return *(uint*)&c; } }
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/// <summary>Performs an implicit conversion from <see cref="COLORREF"/> to <see cref="RGBQUAD"/>.</summary>
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/// <param name="c">The <see cref="COLORREF"/> value.</param>
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/// <returns>The result of the conversion.</returns>
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public static implicit operator RGBQUAD(COLORREF c) => new() { Color = c };
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/// <summary>Performs an implicit conversion from <see cref="RGBQUAD"/> to <see cref="COLORREF"/>.</summary>
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/// <param name="c">The <see cref="RGBQUAD"/> value.</param>
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/// <returns>The result of the conversion.</returns>
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public static implicit operator COLORREF(RGBQUAD c) => c.Color;
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/// <summary>Performs an implicit conversion from <see cref="System.Drawing.Color"/> to <see cref="RGBQUAD"/>.</summary>
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/// <param name="c">The <see cref="System.Drawing.Color"/> value.</param>
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/// <returns>The result of the conversion.</returns>
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public static implicit operator RGBQUAD(System.Drawing.Color c) => new() { Color = c };
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/// <summary>Performs an implicit conversion from <see cref="RGBQUAD"/> to <see cref="System.Drawing.Color"/>.</summary>
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/// <param name="c">The <see cref="RGBQUAD"/> value.</param>
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/// <returns>The result of the conversion.</returns>
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public static implicit operator System.Drawing.Color(RGBQUAD c) => c.Color;
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}
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} |