private void fadeOutBranches() {
    fadeOutLayer(PLACEHOLDER_IMAGE_INDEX);
    fadeOutLayer(ACTUAL_IMAGE_INDEX);
    fadeOutLayer(PROGRESS_BAR_IMAGE_INDEX);
    fadeOutLayer(RETRY_IMAGE_INDEX);
    fadeOutLayer(FAILURE_IMAGE_INDEX);
  }
Applies scale type and rounding (both if specified).
drawee/src/main/java/com/facebook/drawee/generic/GenericDraweeHierarchy.java