Removed System.Drawing references

Author: vadd98

src/Spectrogram.Tests/ColormapValues.cs

@@ -1,6 +1,5 @@
 using NUnit.Framework;
 using System;
-using System.Drawing;
 using SkiaSharp;
 
 namespace Spectrogram.Tests
@@ -49,13 +48,13 @@ public void Test_colorLookup_integerMatchesTriplet()
             {
                 byte[] bytes = BitConverter.GetBytes(ints[i]);
 
-                Color color1 = Color.FromArgb(bytes[2], bytes[1], bytes[0]);
+                SKColor color1 = new SKColor(bytes[2], bytes[1], bytes[0]);
 
-                Color color2 = Color.FromArgb(rgb[i, 0], rgb[i, 1], rgb[i, 2]);
+                SKColor color2 = new SKColor(rgb[i, 0], rgb[i, 1], rgb[i, 2]);
 
-                Assert.AreEqual(color2.R, color1.R, 1);
-                Assert.AreEqual(color2.G, color1.G, 1);
-                Assert.AreEqual(color2.B, color1.B, 1);
+                Assert.AreEqual(color2.Red, color1.Red, 1);
+                Assert.AreEqual(color2.Green, color1.Green, 1);
+                Assert.AreEqual(color2.Blue, color1.Blue, 1);
             }
         }
 

src/Spectrogram.Tests/Mel.cs

@@ -1,9 +1,5 @@
 using NUnit.Framework;
 using System;
-using System.Collections.Generic;
-using System.Drawing;
-using System.Drawing.Imaging;
-using System.Text;
 using SkiaSharp;
 
 namespace Spectrogram.Tests

src/Spectrogram/Spectrogram.csproj

@@ -31,7 +31,6 @@
 
     <ItemGroup>
         <PackageReference Include="FftSharp" Version="2.1.0" />
-        <PackageReference Include="runtime.osx.10.10-x64.CoreCompat.System.Drawing" Version="5.8.64" Condition="'$([System.Runtime.InteropServices.RuntimeInformation]::IsOSPlatform($([System.Runtime.InteropServices.OSPlatform]::OSX)))' == 'true'" />
         <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>