110 lines
3.2 KiB
C#
110 lines
3.2 KiB
C#
using CPF.Mac.CoreFoundation;
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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 CGGradient : INativeObject, IDisposable
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{
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internal IntPtr handle;
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public IntPtr Handle => handle;
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[Preserve(Conditional = true)]
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internal CGGradient(IntPtr handle, bool owns)
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{
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if (!owns)
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{
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CGGradientRetain(handle);
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}
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this.handle = handle;
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}
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~CGGradient()
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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 CGGradientRetain(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 CGGradientRelease(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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CGGradientRelease(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 IntPtr CGGradientCreateWithColorComponents(IntPtr colorspace, double[] components, double[] locations, IntPtr size_t_count);
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public CGGradient(CGColorSpace colorspace, double[] components, double[] locations)
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{
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if (colorspace == null)
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{
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throw new ArgumentNullException("colorspace");
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}
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if (components == null)
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{
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throw new ArgumentNullException("components");
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}
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handle = CGGradientCreateWithColorComponents(colorspace.handle, components, locations, new IntPtr(components.Length / (colorspace.Components + 1)));
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}
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public CGGradient(CGColorSpace colorspace, double[] components)
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{
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if (colorspace == null)
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{
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throw new ArgumentNullException("colorspace");
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}
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if (components == null)
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{
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throw new ArgumentNullException("components");
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}
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handle = CGGradientCreateWithColorComponents(colorspace.handle, components, null, new IntPtr(components.Length / (colorspace.Components + 1)));
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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 IntPtr CGGradientCreateWithColors(IntPtr colorspace, IntPtr colors, double[] locations);
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public CGGradient(CGColorSpace colorspace, CGColor[] colors, double[] locations)
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{
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if (colors == null)
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{
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throw new ArgumentNullException("colors");
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}
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IntPtr colorspace2 = colorspace?.handle ?? IntPtr.Zero;
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using (CFArray cFArray = CFArray.FromNativeObjects(colors))
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{
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handle = CGGradientCreateWithColors(colorspace2, cFArray.Handle, locations);
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}
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}
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public CGGradient(CGColorSpace colorspace, CGColor[] colors)
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{
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if (colors == null)
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{
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throw new ArgumentNullException("colors");
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}
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IntPtr colorspace2 = colorspace?.handle ?? IntPtr.Zero;
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using (CFArray cFArray = CFArray.FromNativeObjects(colors))
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{
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handle = CGGradientCreateWithColors(colorspace2, cFArray.Handle, null);
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}
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}
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}
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}
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