private Image getTextImage() {
    if (type == EGraph.PRIMARY_GRAPH) {
      return primaryTextImage;
    }
    if (type == EGraph.SECONDARY_GRAPH) {
      return secondaryTextImage;
    }
    return combinedTextImage;
  }
Renders the graph view background with indicators for the type of graph being shown.
java/ui/src/main/java/com/google/security/zynamics/bindiff/graph/backgroundrendering/ImageBackgroundRenderer.java