use std::{boxed::Box as Box_, pin::Pin, ptr};
use glib::translate::*;
use crate::{prelude::*, FontDialog, Window};
impl FontDialog {
#[doc(alias = "gtk_font_dialog_choose_font_and_features")]
#[doc(alias = "gtk_font_dialog_choose_font_and_features_finish")]
pub fn choose_font_and_features<
P: FnOnce(
Result<
(
Option<pango::FontDescription>,
glib::GString,
pango::Language,
),
glib::Error,
>,
) + 'static,
>(
&self,
parent: Option<&impl IsA<Window>>,
initial_value: Option<&pango::FontDescription>,
cancellable: Option<&impl IsA<gio::Cancellable>>,
callback: P,
) {
let main_context = glib::MainContext::ref_thread_default();
let is_main_context_owner = main_context.is_owner();
let has_acquired_main_context = (!is_main_context_owner)
.then(|| main_context.acquire().ok())
.flatten();
assert!(
is_main_context_owner || has_acquired_main_context.is_some(),
"Async operations only allowed if the thread is owning the MainContext"
);
let user_data: Box_<glib::thread_guard::ThreadGuard<P>> =
Box_::new(glib::thread_guard::ThreadGuard::new(callback));
unsafe extern "C" fn choose_font_and_features_trampoline<
P: FnOnce(
Result<
(
Option<pango::FontDescription>,
glib::GString,
pango::Language,
),
glib::Error,
>,
) + 'static,
>(
_source_object: *mut glib::gobject_ffi::GObject,
res: *mut gio::ffi::GAsyncResult,
user_data: glib::ffi::gpointer,
) {
let mut error = ptr::null_mut();
let mut font_desc = ptr::null_mut();
let mut font_features = ptr::null_mut();
let mut language = ptr::null_mut();
let _ = ffi::gtk_font_dialog_choose_font_and_features_finish(
_source_object as *mut _,
res,
&mut font_desc,
&mut font_features,
&mut language,
&mut error,
);
let result = if error.is_null() {
Ok((
from_glib_full(font_desc),
from_glib_full(font_features),
from_glib_full(language),
))
} else {
Err(from_glib_full(error))
};
let callback: Box_<glib::thread_guard::ThreadGuard<P>> =
Box_::from_raw(user_data as *mut _);
let callback: P = callback.into_inner();
callback(result);
}
let callback = choose_font_and_features_trampoline::<P>;
unsafe {
ffi::gtk_font_dialog_choose_font_and_features(
self.to_glib_none().0,
parent.map(|p| p.as_ref()).to_glib_none().0,
mut_override(initial_value.to_glib_none().0),
cancellable.map(|p| p.as_ref()).to_glib_none().0,
Some(callback),
Box_::into_raw(user_data) as *mut _,
);
}
}
#[allow(clippy::type_complexity)]
pub fn choose_font_and_features_future(
&self,
parent: Option<&(impl IsA<Window> + Clone + 'static)>,
initial_value: Option<&pango::FontDescription>,
) -> Pin<
Box_<
dyn std::future::Future<
Output = Result<
(
Option<pango::FontDescription>,
glib::GString,
pango::Language,
),
glib::Error,
>,
> + 'static,
>,
> {
let parent = parent.map(ToOwned::to_owned);
let initial_value = initial_value.map(ToOwned::to_owned);
Box_::pin(gio::GioFuture::new(self, move |obj, cancellable, send| {
obj.choose_font_and_features(
parent.as_ref().map(::std::borrow::Borrow::borrow),
initial_value.as_ref().map(::std::borrow::Borrow::borrow),
Some(cancellable),
move |res| {
send.resolve(res);
},
);
}))
}
}