// 只计算设备布局，不保存接口数据。
function getLayout() {
  var info = {};
  try { info = wx.getWindowInfo ? wx.getWindowInfo() : wx.getSystemInfoSync(); } catch (e) {}
  var status = info.statusBarHeight || 20;
  var capsule;
  try { capsule = wx.getMenuButtonBoundingClientRect(); } catch (e) {}
  var bar = capsule && capsule.height > 0 && capsule.top >= status
    ? capsule.height + (capsule.top - status) * 2 : 44;
  var height = status + bar;
  var width = info.windowWidth || 375;
  var side = capsule && capsule.left > width / 2 ? width - capsule.left + 12 : 100;
  return { statusBarHeight: status, barHeight: bar, navHeight: height, navSide: side,
    layoutStyle: '--nav-height:' + height + 'px;--status-height:' + status + 'px;' };
}
module.exports = { getLayout };