static void ApplierCallback(IntPtr info, IntPtr element_ptr)
{
GCHandle gch = GCHandle.FromIntPtr(info);
// note: CGPathElementType is an untyped enum, always 32bits
CGPathElement element = new CGPathElement(Marshal.ReadInt32(element_ptr, 0));
ApplierFunction func = (ApplierFunction)gch.Target;
IntPtr ptr = Marshal.ReadIntPtr(element_ptr, IntPtr.Size);
int ptsize = Marshal.SizeOf(typeof(CGPoint));
switch (element.Type)
{
case CGPathElementType.CloseSubpath:
break;
case CGPathElementType.MoveToPoint:
case CGPathElementType.AddLineToPoint:
element.Point1 = (CGPoint)Marshal.PtrToStructure(ptr, typeof(CGPoint));
break;
case CGPathElementType.AddQuadCurveToPoint:
element.Point1 = (CGPoint)Marshal.PtrToStructure(ptr, typeof(CGPoint));
element.Point2 = (CGPoint)Marshal.PtrToStructure(((IntPtr)(((long)ptr) + ptsize)), typeof(CGPoint));
break;
case CGPathElementType.AddCurveToPoint:
element.Point1 = (CGPoint)Marshal.PtrToStructure(ptr, typeof(CGPoint));
element.Point2 = (CGPoint)Marshal.PtrToStructure(((IntPtr)(((long)ptr) + ptsize)), typeof(CGPoint));
element.Point3 = (CGPoint)Marshal.PtrToStructure(((IntPtr)(((long)ptr) + (2 * ptsize))), typeof(CGPoint));
break;
}
func(element);
}
public void Apply(ApplierFunction func)
{
GCHandle gch = GCHandle.Alloc(func);
CGPathApply(handle, GCHandle.ToIntPtr(gch), ApplierCallback);
gch.Free();
}
extern static void CGPDFDictionaryApplyFunction (/* CGPDFDictionaryRef */ IntPtr dic, ApplierFunction function, /* void* */ IntPtr info);
public void Apply (ApplierFunction func)
{
GCHandle gch = GCHandle.Alloc (func);
CGPathApply (handle, GCHandle.ToIntPtr (gch), ApplierCallback);
gch.Free ();
}
extern static void CGPDFDictionaryApplyFunction (IntPtr dictRef, ApplierFunction function, IntPtr info);
extern static void CGPDFDictionaryApplyFunction(/* CGPDFDictionaryRef */ IntPtr dic, ApplierFunction function, /* void* */ IntPtr info);
extern static void CGPDFDictionaryApplyFunction(IntPtr dictRef, ApplierFunction function, IntPtr info);
