Function getFillForNode

tensorboard/plugins/graph/tf_graph_common/node.ts:779–866

(
  templateIndex: (name: string) => number | null,
  colorBy: ColorBy,
  renderInfo: render.RenderNodeInfo,
  isExpanded: boolean,
  svgRoot?: SVGElement
)

 * for the fill inside the svgRoot when necessary.
 */
export function getFillForNode(
  templateIndex: (name: string) => number | null,
  colorBy: ColorBy,
  renderInfo: render.RenderNodeInfo,
  isExpanded: boolean,
  svgRoot?: SVGElement
): string {
  let colorParams = render.MetanodeColors;
  templateIndex = templateIndex || (() => 0);
  switch (colorBy) {
    // The 'none' mode still colors nodes, just ignores the template structural
    // colors.
    case ColorBy.NONE:
    case ColorBy.STRUCTURE:
      if (renderInfo.node.type === NodeType.META) {
        let tid = (<Metanode>renderInfo.node).templateId;
        return colorBy === ColorBy.STRUCTURE && tid !== null
          ? colorParams.STRUCTURE_PALETTE(templateIndex(tid)!, isExpanded)
          : colorParams.UNKNOWN;
      } else if (renderInfo.node.type === NodeType.SERIES) {
        // If expanded, we're showing the background rect, which we want to
        // appear gray. Otherwise we're showing a stack of ellipses which we
        // want to show white.
        return isExpanded ? colorParams.EXPANDED_COLOR : 'white';
      } else if (renderInfo.node.type === NodeType.BRIDGE) {
        return renderInfo.structural
          ? '#f0e'
          : (<BridgeNode>renderInfo.node).inbound
          ? '#0ef'
          : '#fe0';
      } else if (_.isNumber((renderInfo.node as OpNode).functionInputIndex)) {
        // This is an input of a TensorFlow function.
        return '#795548';
      } else if (_.isNumber((renderInfo.node as OpNode).functionOutputIndex)) {
        // This is an output of a TensorFlow function.
        return '#009688';
      } else {
        // Op nodes are white.
        return 'white';
      }
    case ColorBy.DEVICE:
      if (renderInfo.deviceColors == null) {
        // Return the hue for unknown device.
        return colorParams.UNKNOWN;
      }
      return isExpanded
        ? colorParams.EXPANDED_COLOR
        : getGradient(
            'device-' + renderInfo.node.name,
            renderInfo.deviceColors,
            svgRoot
          );
    case ColorBy.XLA_CLUSTER:
      if (renderInfo.xlaClusterColors == null) {
        // Return the hue for unknown xlaCluster.
        return colorParams.UNKNOWN;
      }
      return isExpanded