How to add thumbnails rapidly

[kyo]

Dear All,
I have run into a problem of adding thumnails to panel slowly.

Recently,I have done a performance test to add a large quantity of thumbnails (C# usercontrol) to my own thumbnails pane.
But,it takes about 8s to add all the thumbnails (about 160 pages) that is quite slower than your Editor SDK thumbnails pane can do.

What an amazing that your Editor SDK thumnail pane can load large quantity of images (control) in such short time.

I have implemented my own thumbnails pane with C# FlowLayoutPanel.
Can you give me some advice or ideas about how to make the adding more rapid?or how does your Editor SDK do that?

Thanks in advance.

[Sasha - Tracker Dev Team]

Hello kyo,

For starters, we cache the thumbnails so that we don't fully draw them each time. Also, we are loading them in the different thread allowing the program to work while they are loading. By implementing this behavior you should be able to speed up the thumbnails load.

Cheers,
Alex

[kyo]

Hello,
By the way,I want to know your Editor SDK's Thumbnails pane is written by C++ or C#?

As far as I know,C# language only support the UI thread (main thread) to manipulate the UI related controls,and other sub threads need to be invoked to the main thread to do this.That is to say,in C# we could not use multiple threads to manipulate UI in a fully concurrently way(the threads would compete for the main thread) .

I guess that your Editor SDK's Thumbnails pane is probably written by C++.

Anyhow,caching the thumnails is important to improve the performance.

I will try the cache approach.

Thanks.

[Sasha - Tracker Dev Team]

Hello kyo,

The Editor itself and all of Tracker's products are written at C++ as the speed and efficiency optimization are crucial.

Cheers,
Alex