Screen scaling / zoom / dpi calculations for proper rendering

[huangli321456]

wpf:Layout exception in Viewbox
<Window ...... Height="450" Width="800"> <Viewbox> <Grid Height="450" Width="800"> <fl:VideoView x:Name="flview"> <Grid> <Image Source="NoneCCTV.png"/> </Grid> </fl:VideoView> </Grid> </Viewbox> </Window>

[SuRGeoNix]

I don't see a Layout exception, I'm not familiar with viewbox at all. Can you provide more information and the exception message?

If you use the viewbox for the image then it should be inside VideoView and not outside.

[huangli321456]

just like this,and run the application

[huangli321456]

I have solved this problem. You can refer to my practice
WPF.zip

[SuRGeoNix]

OK I see your point. Those two files are based on libvlcsharp from here and here

So the issue is with DPI? If you feel confident I will review it and I will update this to the next version.

[huangli321456]

those two files are here

not only DPI,the basic window size also affects the viewbox and indirectly the videoview
so you need to calculate the zoom ratio between the current screen and the design size of the base window
for example , your screen bound is 1920x1080,but base window size is design to 3840x2160,and system zoom layout is not 100% like this

under these circumstances,DPI and basic window size will all affect it

[SuRGeoNix]

This probably means that Renderer should also consider those factors. And I need also to ensure that doesn't brake anything else.

[SuRGeoNix]

Hey, I tried to add this on v3.2 but the fix that you suggest didn't work for me. I didn't have time to do more research on this. I will have a look at the next update

[SuRGeoNix]

@huangli321456 I'm closing this as I cannot reproduce it anymore. Please re-open if you still have issues.