Performance improvement for MeasureOverride - Diagramming Components

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Performance improvement for MeasureOverride (Read 2202 times)

milosa YaBB Newbies Offline I Love MindFusion! Posts: 11 Joined: Mar 16^th, 2017	Performance improvement for MeasureOverride Jul 2^nd, 2018 at 10:55am	Print Post
	Hello, I am trying to improve loading time for bigger diagrams in my project. When I do profiling I can see that 30% of the time is spent in the Mindfusion.Diagramming.Wpf.Diagram.MeasureOverride(size). Since I don't know the details of this method, I was wandering is there something that I am doing wrong since this method takes big share of the time? Is there something that I could do to make it trigger less often? (precalculate the size, add more nodes at once...)? Any idea is greatly appreciated. Regards, Milos


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Slavcho YaBB Moderator Offline tech.support Posts: 3447 Joined: Oct 19^th, 2005	Re: Performance improvement for MeasureOverride Reply #1 - Jul 3^rd, 2018 at 9:26am	Print Post
	Hi, It just calls Measure method on child elements (so all diagram items), as we believe this is required by WPF for proper rendering. You could try overriding the method in a custom diagram class and skip calling base.MeasureOverride in some situations (e.g. if some flag you set in Created/Modified/Deleted events is false), but this could leave the WPF visual tree in invalid state, not detecting clicks, clipping items, etc. If by chance you keep a lot of diagram items hidden, you can set RemoveHiddenItemsFromVisualTree property to keep the WPF visual tree smaller, which will lead to shorter loops in Measure methods. Check these older posts for other performance discussions - https://mindfusion.eu/Forum/YaBB.pl?num=1491554817 https://mindfusion.eu/Forum/YaBB.pl?num=1504143892 https://mindfusion.eu/Forum/YaBB.pl?num=1442997646 https://mindfusion.eu/Forum/YaBB.pl?num=1268995278 https://mindfusion.eu/Forum/YaBB.pl?num=1358507496 Regards, Slavcho Mindfusion


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