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初始化

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xhm
2023-11-21 23:05:03 +08:00
commit 2455630dad
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104
CPF.Mac/Mac/CoreText/CTFramesetter.cs Normal file
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using CPF.Mac.CoreFoundation;
using CPF.Mac.CoreGraphics;
using CPF.Mac.Foundation;
using CPF.Mac.ObjCRuntime;
using System;
using System.Runtime.InteropServices;
namespace CPF.Mac.CoreText
{
[Since(3, 2)]
public class CTFramesetter : INativeObject, IDisposable
{
internal IntPtr handle;
public IntPtr Handle => handle;
internal CTFramesetter(IntPtr handle, bool owns)
{
if (handle == IntPtr.Zero)
{
throw ConstructorError.ArgumentNull(this, "handle");
}
this.handle = handle;
if (!owns)
{
CFObject.CFRetain(handle);
}
}
~CTFramesetter()
{
Dispose(disposing: false);
}
public void Dispose()
{
Dispose(disposing: true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing)
{
if (handle != IntPtr.Zero)
{
CFObject.CFRelease(handle);
handle = IntPtr.Zero;
}
}
[DllImport("/System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreText.framework/CoreText")]
private static extern IntPtr CTFramesetterCreateWithAttributedString(IntPtr @string);
public CTFramesetter(NSAttributedString value)
{
if (value == null)
{
throw ConstructorError.ArgumentNull(this, "value");
}
handle = CTFramesetterCreateWithAttributedString(value.Handle);
if (handle == IntPtr.Zero)
{
throw ConstructorError.Unknown(this);
}
}
[DllImport("/System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreText.framework/CoreText")]
private static extern IntPtr CTFramesetterCreateFrame(IntPtr framesetter, NSRange stringRange, IntPtr path, IntPtr frameAttributes);
public CTFrame GetFrame(NSRange stringRange, CGPath path, CTFrameAttributes frameAttributes)
{
if (path == null)
{
throw new ArgumentNullException("path");
}
IntPtr value = CTFramesetterCreateFrame(handle, stringRange, path.Handle, frameAttributes?.Dictionary.Handle ?? IntPtr.Zero);
if (value == IntPtr.Zero)
{
return null;
}
return new CTFrame(value, owns: true);
}
[DllImport("/System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreText.framework/CoreText")]
private static extern IntPtr CTFramesetterGetTypesetter(IntPtr framesetter);
public CTTypesetter GetTypesetter()
{
IntPtr value = CTFramesetterGetTypesetter(handle);
if (value == IntPtr.Zero)
{
return null;
}
return new CTTypesetter(value, owns: false);
}
[DllImport("/System/Library/Frameworks/ApplicationServices.framework/Frameworks/CoreText.framework/CoreText")]
private static extern CGSize CTFramesetterSuggestFrameSizeWithConstraints(IntPtr framesetter, NSRange stringRange, IntPtr frameAttributes, CGSize constraints, out NSRange fitRange);
public CGSize SuggestFrameSize(NSRange stringRange, CTFrameAttributes frameAttributes, CGSize constraints, out NSRange fitRange)
{
return CTFramesetterSuggestFrameSizeWithConstraints(handle, stringRange, frameAttributes?.Dictionary.Handle ?? IntPtr.Zero, constraints, out fitRange);
}
}
}