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  1. Qt
  2. QTBUG-6408

QFontEngineS60::QFontEngineS60 called hundreds of times, taking up to 1ms each call

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    • Suggestion
    • Resolution: Done
    • P1: Critical
    • 4.6.1
    • 4.6.0
    • None
    • None

    Description

      Traces of Orbit app start up show that QFontEngineS60::QFontEngineS60 is called many times. In each construction it calls CFbsBitmap::Create, CFbsBitmapDevice::NewL and CFbsDevice::GetNearestFontInPixels, each of which is expensive.

      Does it really need to create a new CFbsBitmap and CFbsBitmapDevice each time? It might be more efficient if a common one was shared, or perhaps a pool.

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              jhautaka Jani Hautakangas
              mread Murray Read
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