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Added typed compression property get.

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This commit is contained in:
Eugene Wang
2025-11-12 01:30:36 -05:00
parent 5c8f1f2df6
commit 8afc52c82b
1 changed files with 38 additions and 38 deletions
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76
src/NTwain/Native/BITMAP.cs
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@@ -187,12 +187,7 @@ namespace Windows.Win32.Graphics.Gdi
return strideTest;
}
/// <summary>
/// Returns a <see cref="System.String" /> that represents this instance.
/// </summary>
/// <returns>
/// A <see cref="System.String" /> that represents this instance.
/// </returns>
/// <inheritdoc/>
public override string ToString()
{
return new StringBuilder().Append("BitmapInfoHeader:")
@@ -201,7 +196,7 @@ namespace Windows.Win32.Graphics.Gdi
.Append("\r\n\tHeight = " + biHeight)
.Append("\r\n\tPlanes = " + biPlanes)
.Append("\r\n\tBitCount = " + biBitCount)
.Append("\r\n\tCompression = " + biCompression)
.Append("\r\n\tCompression = " + Compression)
.Append("\r\n\tSizeImage = " + biSizeImage)
.Append("\r\n\tXPixelsPerMeter = " + biXPelsPerMeter)
.Append("\r\n\tYPixelsPerMeter = " + biYPelsPerMeter)
@@ -209,37 +204,42 @@ namespace Windows.Win32.Graphics.Gdi
.Append("\r\n\tColorImportant = " + biClrImportant).ToString();
}
///// <summary>
///// Indicates the bitmap compression of <seealso cref="BITMAPINFOHEADER"/>.
///// </summary>
//public enum CompressionType : uint
//{
// /// <summary>
// /// An uncompressed format.
// /// </summary>
// BI_RGB = 0,
// /// <summary>
// /// A run-length encoded (RLE) format for bitmaps with 8 bpp. The compression format is a 2-byte format consisting of a count byte followed by a byte containing a color index. For more information, see Bitmap Compression.
// /// </summary>
// BI_RLE8 = 1,
// /// <summary>
// /// An RLE, format for bitmaps with 4 bpp. The compression format is a 2-byte format consisting of a count byte followed by two word-length color indexes. For more information, see Bitmap Compression.
// /// </summary>
// BI_RLE4 = 2,
// /// <summary>
// /// Specifies that the bitmap is not compressed and that the color table consists of three DWORD color masks that specify the red, green, and blue components of each pixel.
// /// This is valid when used with 16- and 32-bpp bitmaps.
// /// </summary>
// BI_BITFIELDS = 3,
// /// <summary>
// /// Indicates that the image is a JPEG image.
// /// </summary>
// BI_JPEG = 4,
// /// <summary>
// /// Indicates that the image is a PNG image.
// /// </summary>
// BI_PNG = 5
//}
/// <summary>
/// Gets the bitmap compression type.
/// </summary>
public CompressionType Compression { get { return (CompressionType)biCompression; } }
/// <summary>
/// Indicates the bitmap compression of <seealso cref="BITMAPINFOHEADER"/>.
/// </summary>
public enum CompressionType : uint
{
/// <summary>
/// An uncompressed format.
/// </summary>
BI_RGB = 0,
/// <summary>
/// A run-length encoded (RLE) format for bitmaps with 8 bpp. The compression format is a 2-byte format consisting of a count byte followed by a byte containing a color index. For more information, see Bitmap Compression.
/// </summary>
BI_RLE8 = 1,
/// <summary>
/// An RLE, format for bitmaps with 4 bpp. The compression format is a 2-byte format consisting of a count byte followed by two word-length color indexes. For more information, see Bitmap Compression.
/// </summary>
BI_RLE4 = 2,
/// <summary>
/// Specifies that the bitmap is not compressed and that the color table consists of three DWORD color masks that specify the red, green, and blue components of each pixel.
/// This is valid when used with 16- and 32-bpp bitmaps.
/// </summary>
BI_BITFIELDS = 3,
/// <summary>
/// Indicates that the image is a JPEG image.
/// </summary>
BI_JPEG = 4,
/// <summary>
/// Indicates that the image is a PNG image.
/// </summary>
BI_PNG = 5
}
}
//[StructLayout(LayoutKind.Sequential, Pack = 1)]