// Close() is a wrapper around gdk_pixbuf_loader_close().
func (v *PixbufLoader) Close() error {
var cerr *C.GError
if ok := gobool(C.gdk_pixbuf_loader_close(v.Native(), &cerr)); !ok {
defer C.g_error_free(cerr)
return errors.New(C.GoString((*C.char)(C.error_get_message(cerr))))
}
return nil
}
// PixbufNewFromFileAtScale() is a wrapper around gdk_pixbuf_new_from_file_at_scale().
func PixbufNewFromFileAtScale(fileName string, width, height int, preserveAspectRatio bool) (*Pixbuf, error) {
var cerr *C.GError
cstr := C.CString(fileName)
defer C.free(unsafe.Pointer(cstr))
c := C.gdk_pixbuf_new_from_file_at_scale(cstr, C.int(width), C.int(height), gbool(preserveAspectRatio), &cerr)
if c == nil {
defer C.g_error_free(cerr)
return nil, errors.New(C.GoString((*C.char)(C.error_get_message(cerr))))
}
obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
p := wrapPixbuf(obj)
runtime.SetFinalizer(obj, (*glib.Object).Unref)
return p, nil
}
// PixbufNewFromFile() is a wrapper around gdk_pixbuf_new_from_file().
func PixbufNewFromFile(fileName string) (*Pixbuf, error) {
var cerr *C.GError
cstr := C.CString(fileName)
defer C.free(unsafe.Pointer(cstr))
c := C.gdk_pixbuf_new_from_file(cstr, &cerr)
if c == nil {
defer C.g_error_free(cerr)
return nil, errors.New(C.GoString((*C.char)(C.error_get_message(cerr))))
}
obj := &glib.Object{glib.ToGObject(unsafe.Pointer(c))}
p := wrapPixbuf(obj)
runtime.SetFinalizer(obj, (*glib.Object).Unref)
return p, nil
}
// Write() is a wrapper around gdk_pixbuf_loader_write().
func (v *PixbufLoader) Write(data []byte) (n int, err error) {
// n is set to 0 on error, and set to len(data) otherwise.
// This is a tiny hacky to satisfy io.Writer and io.WriteCloser,
// which would allow access to all io and ioutil goodies,
// and play along nice with go environment.
if len(data) == 0 {
return 0, nil
}
var cerr *C.GError
ok := gobool(C.gdk_pixbuf_loader_write(v.Native(), (*C.guchar)(unsafe.Pointer(&data[0])), C.gsize(len(data)), &cerr))
if !ok {
defer C.g_error_free(cerr)
return 0, errors.New(C.GoString((*C.char)(C.error_get_message(cerr))))
}
return len(data), nil
}