Mmmm yes and no. I tried to compile a real app to showcase but apart from gtk3, they have several dependencies that are and are not on the depot (more porting required), so i stopped on the sample already compiled apps.
Also looked on Darktable (read about it on this forum), and I think that once gtk3 recipe is up, and the other dependencies are met (missing ones are one or two libs), it could be run on a browser. Unless some things like file opening fail or so.
I am already working on the recipe so other software can find the libraries and go on compiling 
But found some issues that need to be solved and yadayadayada.