public static bool TryGetProperty(this ID2D1Properties properties, uint index, out object value)
{
if (properties == null)
{
value = null;
return(false);
}
var size = properties.GetValueSize(index);
if (size == 0)
{
value = null;
return(false);
}
var data = new byte[size];
if (properties.GetValue(index, D2D1_PROPERTY_TYPE.D2D1_PROPERTY_TYPE_UNKNOWN, data, data.Length).IsError)
{
value = null;
return(false);
}
var type = properties.GetType(index);
value = D2D1Property.GetValue(type, data);
return(true);
}
public static D2D1Property GetProperty(this ID2D1Properties properties, uint index)
{
if (properties == null)
{
return(null);
}
var prop = new D2D1Property();
prop.Type = properties.GetType(index);
var len = properties.GetPropertyNameLength(index);
if (len > 0)
{
var name = new string('\0', (int)len);
properties.GetPropertyName(index, name, len + 1);
prop.Name = name;
}
var size = properties.GetValueSize(index);
if (size > 0)
{
var data = new byte[size];
if (properties.GetValue(index, D2D1_PROPERTY_TYPE.D2D1_PROPERTY_TYPE_UNKNOWN, data, data.Length).IsSuccess)
{
prop.ValueBytes = data;
}
}
if (prop.Type == D2D1_PROPERTY_TYPE.D2D1_PROPERTY_TYPE_UNKNOWN && prop.Name == null)
{
return(null);
}
return(prop);
}
public static IReadOnlyList <D2D1Property> GetProperties(this ID2D1Properties properties)
{
if (properties == null)
{
return(new D2D1Property[0]);
}
var list = new List <D2D1Property>();
for (uint i = 0; i < properties.GetPropertyCount(); i++)
{
var len = properties.GetPropertyNameLength(i);
var name = new string('\0', (int)len);
properties.GetPropertyName(i, name, len + 1).ThrowOnError();
var property = new D2D1Property();
property.Name = name;
property.Type = properties.GetType(i);
var size = properties.GetValueSize(i);
if (size > 0)
{
var data = new byte[size];
properties.GetValue(i, property.Type, data, data.Length).ThrowOnError();
property.ValueBytes = data;
}
properties.GetSubProperties(i, out var sub);
property.SubProperties = GetProperties(sub);
list.Add(property);
}
var prop = GetProperty(properties, unchecked ((uint)D2D1_PROPERTY.D2D1_PROPERTY_AUTHOR));
if (prop != null)
{
list.Add(prop);
}
prop = GetProperty(properties, unchecked ((uint)D2D1_PROPERTY.D2D1_PROPERTY_CATEGORY));
if (prop != null)
{
list.Add(prop);
}
prop = GetProperty(properties, unchecked ((uint)D2D1_PROPERTY.D2D1_PROPERTY_DESCRIPTION));
if (prop != null)
{
list.Add(prop);
}
prop = GetProperty(properties, unchecked ((uint)D2D1_PROPERTY.D2D1_PROPERTY_DISPLAYNAME));
if (prop != null)
{
list.Add(prop);
}
prop = GetProperty(properties, unchecked ((uint)D2D1_PROPERTY.D2D1_PROPERTY_CLSID));
if (prop != null)
{
list.Add(prop);
}
prop = GetProperty(properties, unchecked ((uint)D2D1_PROPERTY.D2D1_PROPERTY_INPUTS));
if (prop != null)
{
list.Add(prop);
}
prop = GetProperty(properties, unchecked ((uint)D2D1_PROPERTY.D2D1_PROPERTY_MIN_INPUTS));
if (prop != null)
{
list.Add(prop);
}
prop = GetProperty(properties, unchecked ((uint)D2D1_PROPERTY.D2D1_PROPERTY_MAX_INPUTS));
if (prop != null)
{
list.Add(prop);
}
prop = GetProperty(properties, unchecked ((uint)D2D1_PROPERTY.D2D1_PROPERTY_CACHED));
if (prop != null)
{
list.Add(prop);
}
prop = GetProperty(properties, unchecked ((uint)D2D1_PROPERTY.D2D1_PROPERTY_PRECISION));
if (prop != null)
{
list.Add(prop);
}
return(list);
}
