// 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:
C.g_value_set_long(v.g(), C.glong(i.(int)))
case reflect.Int8:
C.g_value_set_schar(v.g(), C.gint8(i.(int8)))
case reflect.Int32:
C.g_value_set_int(v.g(), C.gint(i.(int32)))
case reflect.Int64:
C.g_value_set_int64(v.g(), C.gint64(i.(int64)))
case reflect.Uint:
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:
C.g_value_set_uint(v.g(), C.guint(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.")
}
}
// pointerVal attempts to return an unsafe.Pointer for value.
// Not all types are understood, in which case a nil Pointer
// is returned.
func pointerVal(value interface{}) unsafe.Pointer {
var p unsafe.Pointer
switch v := value.(type) {
case bool:
c := gbool(v)
p = unsafe.Pointer(&c)
case int8:
c := C.gint8(v)
p = unsafe.Pointer(&c)
case int16:
c := C.gint16(v)
p = unsafe.Pointer(&c)
case int32:
c := C.gint32(v)
p = unsafe.Pointer(&c)
case int64:
c := C.gint64(v)
p = unsafe.Pointer(&c)
case int:
c := C.gint(v)
p = unsafe.Pointer(&c)
case uint8:
c := C.guchar(v)
p = unsafe.Pointer(&c)
case uint16:
c := C.guint16(v)
p = unsafe.Pointer(&c)
case uint32:
c := C.guint32(v)
p = unsafe.Pointer(&c)
case uint64:
c := C.guint64(v)
p = unsafe.Pointer(&c)
case uint:
c := C.guint(v)
p = unsafe.Pointer(&c)
case uintptr:
p = unsafe.Pointer(C.gpointer(v))
case float32:
c := C.gfloat(v)
p = unsafe.Pointer(&c)
case float64:
c := C.gdouble(v)
p = unsafe.Pointer(&c)
case string:
cstr := C.CString(v)
defer C.free(unsafe.Pointer(cstr))
p = unsafe.Pointer(cstr)
default:
if pv, ok := value.(unsafe.Pointer); ok {
p = pv
} else {
val := reflect.ValueOf(value)
switch val.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16,
reflect.Int32, reflect.Int64:
c := C.int(val.Int())
p = unsafe.Pointer(&c)
case reflect.Uintptr, reflect.Ptr, reflect.UnsafePointer:
p = unsafe.Pointer(C.gpointer(val.Pointer()))
}
}
}
return p
}
// Set() is a wrapper around g_object_set(). However, unlike
// g_object_set(), this function only sets one name value pair. Make
// multiple calls to this function to set multiple properties.
func (v *Object) Set(name string, value interface{}) error {
cstr := C.CString(name)
defer C.free(unsafe.Pointer(cstr))
if _, ok := value.(Object); ok {
value = value.(Object).GObject
}
var p unsafe.Pointer = nil
switch value.(type) {
case bool:
c := gbool(value.(bool))
p = unsafe.Pointer(&c)
case int8:
c := C.gint8(value.(int8))
p = unsafe.Pointer(&c)
case int16:
c := C.gint16(value.(int16))
p = unsafe.Pointer(&c)
case int32:
c := C.gint32(value.(int32))
p = unsafe.Pointer(&c)
case int64:
c := C.gint64(value.(int64))
p = unsafe.Pointer(&c)
case int:
c := C.gint(value.(int))
p = unsafe.Pointer(&c)
case uint8:
c := C.guchar(value.(uint8))
p = unsafe.Pointer(&c)
case uint16:
c := C.guint16(value.(uint16))
p = unsafe.Pointer(&c)
case uint32:
c := C.guint32(value.(uint32))
p = unsafe.Pointer(&c)
case uint64:
c := C.guint64(value.(uint64))
p = unsafe.Pointer(&c)
case uint:
c := C.guint(value.(uint))
p = unsafe.Pointer(&c)
case uintptr:
p = unsafe.Pointer(C.gpointer(value.(uintptr)))
case float32:
c := C.gfloat(value.(float32))
p = unsafe.Pointer(&c)
case float64:
c := C.gdouble(value.(float64))
p = unsafe.Pointer(&c)
case string:
cstr := C.CString(value.(string))
defer C.free(unsafe.Pointer(cstr))
p = unsafe.Pointer(cstr)
default:
if pv, ok := value.(unsafe.Pointer); ok {
p = pv
} else {
// Constants with separate types are not type asserted
// above, so do a runtime check here instead.
val := reflect.ValueOf(value)
switch val.Kind() {
case reflect.Int, reflect.Int8, reflect.Int16,
reflect.Int32, reflect.Int64:
c := C.int(val.Int())
p = unsafe.Pointer(&c)
case reflect.Uintptr:
p = unsafe.Pointer(C.gpointer(val.Pointer()))
}
}
}
// Can't call g_object_set() as it uses a variable arg list, use a
// wrapper instead
if p != nil {
C._g_object_set_one(C.gpointer(v.GObject), (*C.gchar)(cstr), p)
return nil
} else {
return errors.New("Unable to perform type conversion")
}
}
// SetSChar is a wrapper around g_value_set_schar().
func (v *Value) SetSChar(val int8) {
C.g_value_set_schar(v.native(), C.gint8(val))
}
func GlibInt8(i int8) C.gint8 {
return C.gint8(i)
}