XDG ScreenCast Portal utilities

This module defines an interface for interacting with the ScreenCast portal.

The general interaction pattern with the ScreenCast portal is to open a session, set which source types are of interest, and call start().

# use portal_screencast::{ScreenCast, PortalError};
# fn test() -> Result<(), PortalError> {
let screen_cast = ScreenCast::new()?.start(None)?;
# Ok(())
# }

In more complex cases you can modify the ScreenCast before starting it:

# use portal_screencast::{ScreenCast, PortalError, SourceType};
# fn test() -> Result<(), PortalError> {
let mut screen_cast = ScreenCast::new()?;
// Set which source types to allow, and enable multiple items to be shared.
screen_cast.set_source_types(SourceType::MONITOR);
screen_cast.enable_multiple();
// If you have a window handle you can tie the dialog to it
let screen_cast = screen_cast.start(Some("wayland:<window_id>"))?;
# Ok(())
# }