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[Tim Peeters <1277227@xxxxxxxxxxxxxxxxxx>]

** Also affects: ubuntu-ui-toolkit
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1277227

Title:
  LabelVisual.isInsideOverlay() performance issue

Status in Ubuntu UI Toolkit:
  New
Status in ubuntu-ui-toolkit package in Ubuntu:
  Confirmed

Bug description:
  I ran my app (lp:ureadit) in the QtCreator analyzer and the following
  code accounted for 30% of the rendering time:

  http://bazaar.launchpad.net/~ubuntu-sdk-team/ubuntu-ui-
  toolkit/trunk/view/head:/modules/Ubuntu/Components/ListItems/LabelVisual.qml#L28

      // FIXME: very ugly hack to detect whether the list item is inside a Popover
      property bool overlay: isInsideOverlay(label)
      function isInsideOverlay(item) {
          if (!item.parent) return false;
          return item.parent.hasOwnProperty("pointerTarget") || label.isInsideOverlay(item.parent)
      }

  Location	Type	Time in Percent	Total Time	Calls	Mean Time	Median Time	Longest Time	Shortest Time	Details
  LabelVisual.qml:27	Binding	8.10 %	125.849 ms	152	827.955 µs	894.083 µs	2.305 ms	466.326 µs	property bool overlay: isInsideOverlay(label)

  Location	Time in Percent	Total Time	Self Time in Percent	Self Time	Details
  LabelVisual.qml:28	158.82 %	885.349 ms	27.91 %	88.852 ms	isInsideOverlay

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