79 lines
2.2 KiB
C#
79 lines
2.2 KiB
C#
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using CPF.Mac.Foundation;
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using CPF.Mac.ObjCRuntime;
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using System;
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using System.Runtime.InteropServices;
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namespace CPF.Mac.CoreGraphics
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{
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public class CGLayer : INativeObject, IDisposable
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{
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private IntPtr handle;
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public IntPtr Handle => handle;
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public CGSize Size => CGLayerGetSize(handle);
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public CGContext Context => new CGContext(CGLayerGetContext(handle));
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internal CGLayer(IntPtr handle)
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{
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if (handle == IntPtr.Zero)
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{
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throw new Exception("Invalid parameters to layer creation");
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}
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this.handle = handle;
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CGLayerRetain(handle);
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}
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[Preserve(Conditional = true)]
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internal CGLayer(IntPtr handle, bool owns)
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{
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if (!owns)
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{
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CGLayerRetain(handle);
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}
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this.handle = handle;
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}
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~CGLayer()
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{
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Dispose(disposing: false);
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}
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public void Dispose()
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{
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Dispose(disposing: true);
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GC.SuppressFinalize(this);
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}
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[DllImport("/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/CoreGraphics")]
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private static extern void CGLayerRelease(IntPtr handle);
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[DllImport("/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/CoreGraphics")]
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private static extern void CGLayerRetain(IntPtr handle);
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protected virtual void Dispose(bool disposing)
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{
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if (handle != IntPtr.Zero)
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{
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CGLayerRelease(handle);
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handle = IntPtr.Zero;
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}
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}
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[DllImport("/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/CoreGraphics")]
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private static extern CGSize CGLayerGetSize(IntPtr layer);
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[DllImport("/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/CoreGraphics")]
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private static extern IntPtr CGLayerGetContext(IntPtr layer);
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[DllImport("/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/CoreGraphics")]
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private static extern IntPtr CGLayerCreateWithContext(IntPtr context, CGSize size, IntPtr dictionary);
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public static CGLayer Create(CGContext context, CGSize size)
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{
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return new CGLayer(CGLayerCreateWithContext(context.Handle, size, IntPtr.Zero), owns: true);
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}
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}
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}
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