public static GType RegisterStatic(string typeName, FlagsValue[] values)
{
GType.AssertGTypeName(typeName);
var typeName_ = GMarshal.StringToUtf8Ptr(typeName);
var values_ = GMarshal.CArrayToPtr <FlagsValue> (values, nullTerminated: true);
var ret = g_flags_register_static(typeName_, values_);
// values are never freed for the liftime of the program
return(ret);
}
/// <summary>
/// ClassInit callback for managed classes.
/// </summary>
/// <param name="classPtr">Pointer to <see cref="Struct"/>.</param>
/// <param name="userDataPtr">Pointer to user data from <see cref="TypeInfo"/>.</param>
/// <remarks>
/// This takes care of overriding the methods to make the managed type
/// interop with the GObject type system.
/// </remarks>
static void UnmanagedInitManagedClass(IntPtr classPtr, IntPtr userDataPtr)
{
try {
// Can't use type.GetGType () here since the type registration has
// not finished. So, we get the GType this way instead.
var gtype = Marshal.PtrToStructure <GType> (classPtr);
var type = (Type)GCHandle.FromIntPtr(userDataPtr).Target;
// override property native accessors
Marshal.WriteIntPtr(classPtr, (int)setPropertyOffset, setPropertyPtr);
Marshal.WriteIntPtr(classPtr, (int)getPropertyOffset, getPropertyPtr);
Marshal.WriteIntPtr(classPtr, (int)notifyOffset, notifyPtr);
// Install Properties
uint propId = 1; // propId 0 is used internally, so we start with 1
foreach (var propInfo in type.GetProperties())
{
if (propInfo.DeclaringType != type)
{
// only register properties declared in this type or in interfaces
continue;
}
var name = propInfo.TryGetGPropertyName();
if (name == null)
{
// this property is not to be registered with the GObject type system
continue;
}
// TODO: localize strings for nick and blurb
var nick = propInfo.GetCustomAttribute <DisplayNameAttribute> (true)
?.DisplayName ?? name;
var blurb = propInfo.GetCustomAttribute <DescriptionAttribute> (true)
?.Description ?? nick;
var defaultValue = propInfo.GetCustomAttribute <DefaultValueAttribute> (true)
?.Value;
// setup the flags
var flags = default(ParamFlags);
if (propInfo.CanRead)
{
flags |= ParamFlags.Readable;
}
if (propInfo.CanWrite)
{
flags |= ParamFlags.Writable;
}
// Construct properties don't work with managed types because they
// require setting the property before the class has been instantiated.
// So, we don't ever set ParamFlags.Construct or ParamFlags.ConstructOnly
flags |= ParamFlags.StaticName;
flags |= ParamFlags.StaticNick;
flags |= ParamFlags.StaticBlurb;
// Always explicit notify. Setting properties from managed code
// must manually call notify, so if a property was set via
// unmanaged code, it would result in double notification if
// ExplicitNotify was not set.
flags |= ParamFlags.ExplicitNotify;
if (propInfo.GetCustomAttribute <ObsoleteAttribute> (true) != null)
{
flags |= ParamFlags.Deprecated;
}
// create the pspec instance based on type
ParamSpec pspec;
// TODO: Need to create special boxed type for non-GType objects
var propertyGType = (GType)propInfo.PropertyType;
var fundamentalGType = propertyGType.Fundamental;
if (fundamentalGType == GType.Boolean)
{
pspec = new ParamSpecBoolean(name, nick, blurb, (bool)(defaultValue ?? default(bool)), flags);
}
else if (fundamentalGType == GType.Boxed)
{
pspec = new ParamSpecBoxed(name, nick, blurb, propertyGType, flags);
}
else if (fundamentalGType == GType.Char)
{
pspec = new ParamSpecChar(name, nick, blurb, sbyte.MinValue, sbyte.MaxValue, (sbyte)(defaultValue ?? default(sbyte)), flags);
}
else if (fundamentalGType == GType.UChar)
{
pspec = new ParamSpecUChar(name, nick, blurb, byte.MinValue, byte.MaxValue, (byte)(defaultValue ?? default(byte)), flags);
}
else if (fundamentalGType == GType.Double)
{
pspec = new ParamSpecDouble(name, nick, blurb, double.MinValue, double.MaxValue, (double)(defaultValue ?? default(double)), flags);
}
else if (fundamentalGType == GType.Float)
{
pspec = new ParamSpecFloat(name, nick, blurb, float.MinValue, float.MaxValue, (float)(defaultValue ?? default(float)), flags);
}
else if (fundamentalGType == GType.Enum)
{
pspec = new ParamSpecEnum(name, nick, blurb, propertyGType, (System.Enum)defaultValue, flags);
}
else if (fundamentalGType == GType.Flags)
{
pspec = new ParamSpecFlags(name, nick, blurb, propertyGType, (System.Enum)defaultValue, flags);
}
else if (fundamentalGType == GType.Int)
{
pspec = new ParamSpecInt(name, nick, blurb, int.MinValue, int.MaxValue, (int)(defaultValue ?? default(int)), flags);
}
else if (fundamentalGType == GType.UInt)
{
pspec = new ParamSpecUInt(name, nick, blurb, uint.MinValue, uint.MaxValue, (uint)(defaultValue ?? default(uint)), flags);
}
else if (fundamentalGType == GType.Int64)
{
pspec = new ParamSpecInt64(name, nick, blurb, long.MinValue, long.MaxValue, (long)(defaultValue ?? default(long)), flags);
}
else if (fundamentalGType == GType.UInt64)
{
pspec = new ParamSpecUInt64(name, nick, blurb, ulong.MinValue, ulong.MaxValue, (ulong)(defaultValue ?? default(ulong)), flags);
}
else if (fundamentalGType == GType.Long)
{
pspec = new ParamSpecLong(name, nick, blurb, nlong.MinValue, nlong.MaxValue, (nlong)(defaultValue ?? default(nlong)), flags);
}
else if (fundamentalGType == GType.ULong)
{
pspec = new ParamSpecULong(name, nick, blurb, nulong.MinValue, nulong.MaxValue, (nulong)(defaultValue ?? default(nulong)), flags);
}
else if (fundamentalGType == GType.Object)
{
pspec = new ParamSpecObject(name, nick, blurb, propertyGType, flags);
}
// TODO: do we need this one?
// else if (fundamentalGType == GType.Param) {
// pspec = new ParamSpecParam (name, nick, blurb, ?, flags);
// }
else if (fundamentalGType == GType.Pointer)
{
pspec = new ParamSpecPointer(name, nick, blurb, flags);
}
else if (fundamentalGType == GType.String)
{
pspec = new ParamSpecString(name, nick, blurb, (string)defaultValue, flags);
}
else if (fundamentalGType == GType.Type)
{
pspec = new ParamSpecGType(name, nick, blurb, propertyGType, flags);
}
else if (fundamentalGType == GType.Variant)
{
// TODO: need to pass variant type using attribute?
// for now, always using any type
var variantType = VariantType.Any;
pspec = new ParamSpecVariant(name, nick, blurb, variantType, defaultValue == null ? null : (Variant)defaultValue, flags);
}
else
{
// TODO: Need more specific exception
throw new Exception("unhandled GType");
}
var methodInfo = propInfo.GetAccessors().First();
if (methodInfo.GetBaseDefinition() != methodInfo || propInfo.TryGetMatchingInterfacePropertyInfo() != null)
{
// if this type did not declare the property, the we know
// we are overriding a property from a base class or interface
var namePtr = GMarshal.StringToUtf8Ptr(name);
g_object_class_override_property(classPtr, propId, namePtr);
GMarshal.Free(namePtr);
}
else
{
g_object_class_install_property(classPtr, propId, pspec.Handle);
GC.KeepAlive(pspec);
}
propId++;
}
foreach (var eventInfo in type.GetEvents())
{
if (eventInfo.DeclaringType != type)
{
// only register events declared in this type
continue;
}
var signalAttr = eventInfo.GetCustomAttribute <GSignalAttribute>(true);
if (signalAttr == null)
{
// events without SignalAttribute are not installed
continue;
}
// figure out the name
var name = signalAttr.Name ?? eventInfo.Name;
Signal.ValidateName(name);
// figure out the flags
var flags = default(SignalFlags);
switch (signalAttr.When)
{
case EmissionStage.First:
flags |= SignalFlags.RunFirst;
break;
case EmissionStage.Last:
default:
flags |= SignalFlags.RunLast;
break;
case EmissionStage.Cleanup:
flags |= SignalFlags.RunCleanup;
break;
}
if (signalAttr.NoRecurse)
{
flags |= SignalFlags.NoRecurse;
}
if (signalAttr.Detailed)
{
flags |= SignalFlags.Detailed;
}
if (signalAttr.Action)
{
flags |= SignalFlags.Action;
}
if (signalAttr.NoHooks)
{
flags |= SignalFlags.NoHooks;
}
if (eventInfo.GetCustomAttribute <ObsoleteAttribute> (true) != null)
{
flags |= SignalFlags.Deprecated;
}
// figure out the parameter types
var methodInfo = eventInfo.EventHandlerType.GetMethod("Invoke");
var returnGType = methodInfo.ReturnType.GetGType();
var parameters = methodInfo.GetParameters();
var parameterGTypes = new GType[parameters.Length];
for (int i = 0; i < parameters.Length; i++)
{
parameterGTypes[i] = parameters[i].ParameterType.GetGType();
}
// create a closure that will be called when the signal is emitted
var fieldInfo = type.GetField(eventInfo.Name,
System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
var closure = new Closure((p) => {
var eventDelegate = (MulticastDelegate)fieldInfo.GetValue(p[0]);
return(eventDelegate?.DynamicInvoke(p.Skip(1).ToArray()));
});
// register the signal
var namePtr = GMarshal.StringToUtf8Ptr(name);
var parameterGTypesPtr = GMarshal.CArrayToPtr <GType> (parameterGTypes, false);
Signal.g_signal_newv(namePtr, gtype, flags, closure.Handle,
null, IntPtr.Zero, null, returnGType,
(uint)parameterGTypes.Length, parameterGTypesPtr);
}
}
catch (Exception ex) {
ex.LogUnhandledException();
}
}
/// <summary>
/// This function is meant to be called from the complete_type_info()
/// function of a #GTypePlugin implementation, see the example for
/// g_enum_complete_type_info() above.
/// </summary>
/// <param name="gFlagsType">
/// the type identifier of the type being completed
/// </param>
/// <param name="info">
/// the #GTypeInfo struct to be filled in
/// </param>
/// <param name="constValues">
/// An array of #GFlagsValue structs for the possible
/// enumeration values.
/// </param>
public static void CompleteTypeInfo(GType gFlagsType, out TypeInfo info, FlagsValue[] constValues)
{
var constValues_ = GMarshal.CArrayToPtr <FlagsValue> (constValues, nullTerminated: true);
g_flags_complete_type_info(gFlagsType, out info, constValues_);
}
/// <summary>
/// This function is meant to be called from the `complete_type_info`
/// function of a #GTypePlugin implementation, as in the following
/// example:
/// </summary>
/// <remarks>
/// |[<!-- language="C" -->
/// static void
/// my_enum_complete_type_info (GTypePlugin *plugin,
/// GType g_type,
/// GTypeInfo *info,
/// GTypeValueTable *value_table)
/// {
/// static const GEnumValue values[] = {
/// { MY_ENUM_FOO, "MY_ENUM_FOO", "foo" },
/// { MY_ENUM_BAR, "MY_ENUM_BAR", "bar" },
/// { 0, NULL, NULL }
/// };
///
/// g_enum_complete_type_info (type, info, values);
/// }
/// ]|
/// </remarks>
/// <param name="gEnumType">
/// the type identifier of the type being completed
/// </param>
/// <param name="info">
/// the #GTypeInfo struct to be filled in
/// </param>
/// <param name="constValues">
/// An array of #GEnumValue structs for the possible
/// enumeration values. The array is terminated by a struct with all
/// members being 0.
/// </param>
static void CompleteTypeInfo(GType gEnumType, out TypeInfo info, EnumValue[] constValues)
{
var constValues_ = GMarshal.CArrayToPtr <EnumValue> (constValues, nullTerminated: true);
g_enum_complete_type_info(gEnumType, out info, constValues_);
}
