How to send signals to `zathura` externally?
I have a simple implementation of annotation (..etc) in mind, but I need a way to control
zathura externally. For example, I hope the following scrolls the document
[me@laptop] $ zathura --instance=<ID> --command="sc_scroll"
sc_scroll is the built-in function that scrolls the document.
How to send commands to zathura externally?
As a quick note,
position_set at the end of itself.
sc_scroll then calls
refresh_view(zathura) in its end. Then
g_signal_emit(zathura->ui.session->gtk.view, zathura->signals.refresh_view, 0, zathura);
which finally communicates with an external packages.