MediaQueryData.fromWindow(Window window)

Creates data for a media query based on the given window.

Source 

MediaQueryData.fromWindow(ui.Window window)
  : size = window.physicalSize / window.devicePixelRatio,
    devicePixelRatio = window.devicePixelRatio,
    textScaleFactor = 1.0, // TODO(abarth): Read this value from window.
    padding = new EdgeInsets.fromWindowPadding(window.padding, window.devicePixelRatio);