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[AppKit] Make NSGraphics.NSBestDepth P/Invoke blittable. #19614

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Dec 13, 2023
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[AppKit] Make NSGraphics.NSBestDepth P/Invoke blittable. #19614

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33 changes: 29 additions & 4 deletions src/AppKit/NSGraphics.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@
#if !__MACCATALYST__

using System;
using System.ComponentModel;
using System.Runtime.InteropServices;

using ObjCRuntime;
Expand All @@ -47,14 +48,38 @@ public static class NSGraphics {
public static readonly float DarkGray = (float) 1 / 3.0f;

[DllImport (Constants.AppKitLibrary)]
extern static NSWindowDepth NSBestDepth (IntPtr colorspaceHandle, nint bitsPerSample, nint bitsPerPixel, [MarshalAs (UnmanagedType.I1)] bool planar, [MarshalAs (UnmanagedType.I1)] ref bool exactMatch);
extern unsafe static NSWindowDepth NSBestDepth (IntPtr colorspaceHandle, nint bitsPerSample, nint bitsPerPixel, byte planar, byte* exactMatch);

public static NSWindowDepth BestDepth (NSString colorspace, nint bitsPerSample, nint bitsPerPixel, [MarshalAs (UnmanagedType.I1)] bool planar, [MarshalAs (UnmanagedType.I1)] ref bool exactMatch)
#if !XAMCORE_5_0
[EditorBrowsable (EditorBrowsableState.Never)]
[Obsolete ("Call 'GetBestDepth' instead.")]
public static NSWindowDepth BestDepth (NSString colorspace, nint bitsPerSample, nint bitsPerPixel, bool planar, ref bool exactMatch)
{
if (colorspace is null)
throw new ArgumentNullException ("colorspace");
throw new ArgumentNullException (nameof (colorspace));

return NSBestDepth (colorspace.Handle, bitsPerSample, bitsPerPixel, planar, ref exactMatch);
var exactMatchValue = (byte) (exactMatch ? 1 : 0);
NSWindowDepth rv;
unsafe {
rv = NSBestDepth (colorspace.Handle, bitsPerSample, bitsPerPixel, (byte) (planar ? 1 : 0), &exactMatchValue);
}
exactMatch = exactMatchValue != 0;
return rv;
}
#endif

public static NSWindowDepth GetBestDepth (NSString colorspace, nint bitsPerSample, nint bitsPerPixel, bool planar, out bool exactMatch)
{
if (colorspace is null)
throw new ArgumentNullException (nameof (colorspace));

byte exactMatchValue = 0;
NSWindowDepth rv;
unsafe {
rv = NSBestDepth (colorspace.Handle, bitsPerSample, bitsPerPixel, (byte) (planar ? 1 : 0), &exactMatchValue);
}
exactMatch = exactMatchValue != 0;
return rv;
}

[DllImport (Constants.AppKitLibrary)]
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1 change: 0 additions & 1 deletion tests/cecil-tests/BlittablePInvokes.KnownFailures.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,6 @@
namespace Cecil.Tests {
public partial class BlittablePInvokes {
static HashSet<string> knownFailuresPInvokes = new HashSet<string> {
"AppKit.NSWindowDepth AppKit.NSGraphics::NSBestDepth(System.IntPtr,System.IntPtr,System.IntPtr,System.Boolean,System.Boolean&)",
"AudioToolbox.AudioConverterError AudioToolbox.AudioConverter::AudioConverterGetPropertyInfo(System.IntPtr,AudioToolbox.AudioConverterPropertyID,System.Int32&,System.Boolean&)",
"AudioToolbox.AudioFileError AudioToolbox.AudioFile::AudioFileWritePackets(System.IntPtr,System.Boolean,System.Int32,AudioToolbox.AudioStreamPacketDescription[],System.Int64,System.Int32&,System.IntPtr)",
"AudioToolbox.AudioFileStreamStatus AudioToolbox.AudioFileStream::AudioFileStreamGetPropertyInfo(System.IntPtr,AudioToolbox.AudioFileStreamProperty,System.Int32&,System.Boolean&)",
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34 changes: 34 additions & 0 deletions tests/monotouch-test/AppKit/NSGraphics.cs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,34 @@
#if __MACOS__
using System;
using System.Threading.Tasks;
using NUnit.Framework;

using AppKit;
using Foundation;

namespace Xamarin.Mac.Tests {
[TestFixture]
[Preserve (AllMembers = true)]
public class NSGraphicsTest {
#if !XAMCORE_5_0
[Test]
public void BestDepth ()
{
bool exactMatch = false;
var rv = NSGraphics.BestDepth (NSColorSpace.DeviceRGB, 8, 8, false, ref exactMatch);
Assert.AreEqual (NSWindowDepth.TwentyfourBitRgb, rv, "BestDepth");
Assert.IsTrue (exactMatch, "ExactMatch");
}
#endif

[Test]
public void GetBestDepth ()
{
var rv = NSGraphics.GetBestDepth (NSColorSpace.DeviceRGB, 8, 8, false, out var exactMatch);
Assert.AreEqual (NSWindowDepth.TwentyfourBitRgb, rv, "GetBestDepth");
Assert.IsTrue (exactMatch, "ExactMatch");
}
}
}

#endif // __MACOS__
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