is it possible to run the sprocket with transparent background?

[rahmanih]

Hi,

I want to run the sprocket on a Set tob box, So one of the rquirements is to have the webpage displayed but with a transparent background,i.e the video is visible in the area not covered by HTML content.

is this possible with sprocket? do I need to modify some code?

regards

[davidsz]

Hi! Of course, it should be possible with the RenderWidgetHostView::SetBackgroundColor(...) API function. You can pass a transparent value to this and after that you can see what is behind your web view. (The color of the application window. I don't exactly know what are the system requirements of transparent windows - my current Linux desktop does not support it.)

I made a little example: https://gist.github.com/davidsz/d75947fa56540b6b38e6
It also sets a TRANSLUCENT_WINDOW flag for the app window, maybe it will work for you.

Note: Most of the web pages have background color, so I think this "feature" is not too useful by itself. (In fact only the minimal HTML documents are transparent.) WebContents::InsertCSS(...) could help you to remove predefined backgrounds from the pages.

Happy experimenting, best regards!