GimpUi.Preview.prototype.invalidate
function invalidate(): void {
// Gjs wrapper for gimp_preview_invalidate()
}
This function starts or renews a short low-priority timeout. When the timeout expires, the GimpPreview::invalidated signal is emitted which will usually cause the preview to be updated.
This function does nothing unless the "Preview" button is checked.
During the emission of the signal a busy cursor is set on the toplevel window containing the preview and on the preview area itself.
Since 2.2