[fractal] notify: Use GBytesIcon

[Daniel Garcia Moreno <danigm src gnome org>]

commit af742af0ba480aa710a5b3fbc472da494015b324
Author: Christopher Davis <brainblasted disroot org>
Date:   Thu May 9 14:21:05 2019 -0400

    notify: Use GBytesIcon
    
    Previously we sent a GFileIcon for notifications, but the
    flatpak portal does not support GFileIcon (https://github.com/flatpak/xdg-desktop-portal/issues/317).
    Because of this notifications from the flatpak were
    being dropped.
    
    Now we create a GBytesIcon by loading a GFile and reading
    the bytes, and set that as the icon for notifications.
    
    Closes https://gitlab.gnome.org/GNOME/fractal/issues/490

 fractal-gtk/Cargo.toml          |  5 ++++-
 fractal-gtk/src/appop/notify.rs | 11 +++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)
---
diff --git a/fractal-gtk/Cargo.toml b/fractal-gtk/Cargo.toml
index 2fec22a8..7c4f0987 100644
--- a/fractal-gtk/Cargo.toml
+++ b/fractal-gtk/Cargo.toml
@@ -16,7 +16,6 @@ gdk = "0.9.0"
 gdk-pixbuf = "0.5.0"
 gdk-pixbuf-sys = "0.7.0"
 gstreamer-editing-services = "0.12.2"
-gio = "0.5.1"
 glib = "0.6.1"
 itertools = "0.8.0"
 lazy_static = "1.2.0"
@@ -72,3 +71,7 @@ features = ["v3_22"]
 [dependencies.serde]
 version = "1.0.82"
 features = ["derive"]
+
+[dependencies.gio]
+version = "0.5.1"
+features = ["v2_56"]
diff --git a/fractal-gtk/src/appop/notify.rs b/fractal-gtk/src/appop/notify.rs
index ceec8b5c..82f61a1e 100644
--- a/fractal-gtk/src/appop/notify.rs
+++ b/fractal-gtk/src/appop/notify.rs
@@ -1,8 +1,10 @@
 use gio::ApplicationExt;
+use gio::FileExt;
 use gio::Notification;
 use gio::NotificationExt;
 use gtk;
 use gtk::prelude::*;
+use log::info;
 use std::sync::mpsc::channel;
 use std::sync::mpsc::TryRecvError;
 use std::sync::mpsc::{Receiver, Sender};
@@ -87,8 +89,13 @@ fn create_notification(room_id: &str, title: &str, body: &str, avatar: &str) ->
     let notification = Notification::new(title);
     notification.set_body(body);
     notification.set_priority(gio::NotificationPriority::High);
-    let avatar = gio::FileIcon::new(&gio::File::new_for_path(avatar));
-    notification.set_icon(&avatar);
+    info!("Creating notification with avatar: {}", avatar);
+    let cancellable: Option<&gio::Cancellable> = None;
+    let file = gio::File::new_for_path(avatar);
+    let _ = file.load_bytes(cancellable).map(|(b, _)| {
+        let avatar = gio::BytesIcon::new(&b);
+        notification.set_icon(&avatar);
+    });
     let data = glib::Variant::from(room_id);
     notification.set_default_action_and_target_value("app.open-room", Some(&data));
     notification