function getFullHeight(flagCount) {
    return timeLineHeight + (plotHeight + padding) * flagCount;
}
Spec Constants
Size Spec Diagram - https://app.diagrams.net/#G1HFoesRvNyDap95sNJswTy3nH09emDriC
NOTE: Since DPR is set on page load, changing of screen in runtime will not work well
@TODO
 - Support for color themes
 - Replace constants with functions? - Can support Zoom in and Zoom out of canvas then