I'm also building a canvas app these days. Thank you very much for sharing the code. I'm very curious to know your tricks to make the canvas efficient. for my

I'm also building a canvas app these days. Thank you very much for sharing the code. I'm very curious to know your tricks to make the canvas efficient. for my project, I use virtualization/windowing to only draw what's visible. but mine doesn't draw complex widgets like a code editor. I will dig the code to find out.