On 08/07/16 08:01, Uwe Rathmann wrote:
Just to give you a silly number: every push button of Controls 1 is made of 30 QObjects - every stop of a gradient adds an additional object.I recommend to do the exercise of counting the number of QObjects below the QQuickWindow of an application to everyone. Considering QObject being something "heavy" ( QQuickItem even "heavier" ), the numbers are just terrifying. This issue will be part of Andrews presentation (https://conf.qtcon.org/ en/qtcon/public/events/428 ).
I think the question was more about measuring CPU and GPU performance than memory. Do you happen to have those numbers?
This point about memory usage however is extremely valid, and amongst other things shows that allowing styling in QML itself is hard if not impossible due to the QObject bloat (and privileging composition over vertical integration for "simple" UI elements makes you pay a lot for it.)
Cheers, -- Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Senior Software Engineer KDAB (UK) Ltd., a KDAB Group company | Tel: UK +44-1625-809908 KDAB - The Qt Experts
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