redrawText() {
    if (!this.frameState_) {
      return;
    }
    const layerStates = this.frameState_.layerStatesArray;
    for (let i = 0, ii = layerStates.length; i < ii; ++i) {
      const layer = layerStates[i].layer;
      if (layer.hasRenderer()) {
        layer.getRenderer().handleFontsChanged();
      }
    }
  }
Redraws all text after new fonts have loaded