public CTParagraphStyle(CTParagraphStyleSettings settings)
{
handle = settings == null
? CTParagraphStyleCreate(null, 0)
: CreateFromSettings(settings);
if (handle == IntPtr.Zero)
{
throw ConstructorError.Unknown(this);
}
}
static unsafe IntPtr CreateFromSettings(CTParagraphStyleSettings s)
{
var handle = IntPtr.Zero;
var specifiers = s.GetSpecifiers();
var settings = new CTParagraphStyleSetting [specifiers.Count];
var values = new CTParagraphStyleSettingValue [specifiers.Count];
int i = 0;
foreach (var e in specifiers)
{
e.WriteValue(values, i);
settings [i].spec = e.Spec;
settings [i].valueSize = (uint)e.ValueSize;
++i;
}
fixed(CTParagraphStyleSettingValue *pv = values)
{
for (i = 0; i < settings.Length; ++i)
{
// TODO: is this safe on the ARM?
byte *p = &pv[i].int8;
settings[i].value = (IntPtr)p;
}
handle = CTParagraphStyleCreate(settings, settings.Length);
}
// Yes this weird Dispose implementation is correct, this bugzilla
// comment explains more about it. TL;DR: check CTParagraphStyleSpecifierIntPtrsValue
// https://bugzilla.xamarin.com/show_bug.cgi?id=54148#c4
i = 0;
foreach (var e in specifiers)
{
e.Dispose(values, i);
}
return(handle);
}