func CreateCGValue(tn GType, object ...unsafe.Pointer) *GValue {
var cv C.GValue
C.g_value_init(&cv, C.GType(tn))
// If no data, then return Gvalue initialized with default
if len(object) == 0 {
gv := GValue{tn, &cv}
return &gv
}
obj := object[0]
// Foundamental types are special
// TODO: Handle more cases, like creating GValue from GdkEvents
switch tn {
case G_TYPE_STRING:
C.g_value_take_string(&cv, (*C.gchar)(obj))
case G_TYPE_BOOLEAN:
C.g_value_set_boolean(&cv, *((*C.gboolean)(obj)))
case G_TYPE_CHAR:
C.g_value_set_char(&cv, *((*C.gchar)(obj)))
case G_TYPE_INT:
C.g_value_set_int(&cv, *((*C.gint)(obj)))
case G_TYPE_LONG:
C.g_value_set_long(&cv, *((*C.glong)(obj)))
case G_TYPE_INT64:
C.g_value_set_int64(&cv, *((*C.gint64)(obj)))
case G_TYPE_UCHAR:
C.g_value_set_uchar(&cv, *((*C.guchar)(obj)))
case G_TYPE_UINT:
C.g_value_set_uint(&cv, *((*C.guint)(obj)))
case G_TYPE_ULONG:
C.g_value_set_ulong(&cv, *((*C.gulong)(obj)))
case G_TYPE_UINT64:
C.g_value_set_uint64(&cv, *((*C.guint64)(obj)))
case G_TYPE_FLOAT:
C.g_value_set_float(&cv, *((*C.gfloat)(obj)))
case G_TYPE_DOUBLE:
C.g_value_set_double(&cv, *((*C.gdouble)(obj)))
default:
C.g_value_set_object(&cv, C.gpointer(obj))
}
gv := GValue{tn, &cv}
return &gv
}
// Set value to i
func (v *Value) Set(i interface{}) {
if vg, ok := i.(ValueGetter); ok {
vg.Value().Copy(v)
return
}
// Other types
r := reflect.ValueOf(i)
switch r.Kind() {
case reflect.Invalid:
C.g_value_reset(v.g())
case reflect.Bool:
C.g_value_set_boolean(v.g(), gBoolean(r.Bool()))
case reflect.Int:
if TYPE_GO_INT == TYPE_INT {
C.g_value_set_int(v.g(), C.gint(i.(int)))
} else {
C.g_value_set_long(v.g(), C.glong(i.(int)))
}
case reflect.Int8:
C.g_value_set_char(v.g(), C.gchar(i.(int8)))
case reflect.Int32:
if TYPE_GO_INT32 == TYPE_INT {
C.g_value_set_int(v.g(), C.gint(i.(int32)))
} else {
C.g_value_set_long(v.g(), C.glong(i.(int32)))
}
case reflect.Int64:
C.g_value_set_int64(v.g(), C.gint64(i.(int64)))
case reflect.Uint:
if TYPE_GO_INT == TYPE_INT {
C.g_value_set_uint(v.g(), C.guint(i.(uint)))
} else {
C.g_value_set_ulong(v.g(), C.gulong(i.(uint)))
}
case reflect.Uint8:
C.g_value_set_uchar(v.g(), C.guchar(i.(uint8)))
case reflect.Uint32:
if TYPE_GO_INT32 == TYPE_INT {
C.g_value_set_uint(v.g(), C.guint(i.(uint32)))
} else {
C.g_value_set_ulong(v.g(), C.gulong(i.(uint32)))
}
case reflect.Uint64:
C.g_value_set_uint64(v.g(), C.guint64(i.(uint64)))
case reflect.Float32:
C.g_value_set_float(v.g(), C.gfloat(i.(float32)))
case reflect.Float64:
C.g_value_set_double(v.g(), C.gdouble(i.(float64)))
case reflect.Ptr:
C.g_value_set_pointer(v.g(), C.gpointer(r.Pointer()))
case reflect.String:
C.g_value_set_static_string(v.g(), (*C.gchar)(C.CString(r.String())))
default:
panic("Can't represent Go value in Glib type system.")
}
}