Okular can't play animated files from ConText as seen in examples. http://dl.contextgarden.net/examples/euro-anim/ Quick look at the JavaScript from the code and I could get this: https://pastebin.com/mDVysKah As of now we can't support the field.value = "On" for FormButtons. I dug a little bit to find if this was the only problem with the PDF. Unfortunately it doesn't seem so. My problem with the FormButtons on this pdf is that they only show a check mark, when they should've rendered the full image from the button. Things that I've tried: Hiding each button when showing a new one. Debugged to see if the JavaScript code is running correctly. It is. Changing "Yes" to "On" on kjs_field.cpp, playing a little to see if I could render it. Tests were done on the latest release of Poppler with the kdesrc-build okular.
This has something to do with poppler not rendering the AP streams to checkboxes. Poppler replaces it with a grey field.
had a quick look, the Yes/On is annoying, seems like we would need to bubble up poppler's FormWidgetButton::getOnStr all the way to the JS layer, but you're right, more things need fixing besides that. I don't see any grey field, can you attach a screenshot?