Start on power applet

Cargo.lock

@@ -244,6 +244,19 @@ dependencies = [
  "zbus",
 ]
 
+[[package]]
+name = "cosmic-applet-power"
+version = "0.1.0"
+dependencies = [
+ "futures-util",
+ "gtk4",
+ "logind-zbus",
+ "once_cell",
+ "relm4-macros",
+ "tokio",
+ "zbus",
+]
+
 [[package]]
 name = "cosmic-dbus-networkmanager"
 version = "0.1.0"
@@ -939,6 +952,17 @@ dependencies = [
  "cfg-if",
 ]
 
+[[package]]
+name = "logind-zbus"
+version = "3.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c03958f20018a20963daf0c16ada4f271ae2da3e0017fb40caa8b0e3dc5b0226"
+dependencies = [
+ "serde",
+ "zbus",
+ "zvariant",
+]
+
 [[package]]
 name = "memchr"
 version = "2.4.1"

Cargo.toml

@@ -29,4 +29,4 @@ zvariant = "3"
 layer-shell = ["gdk4-wayland", "libcosmic/layer-shell"]
 
 [workspace]
-members = ["applets/cosmic-applet-graphics", "applets/cosmic-applet-network"]
+members = ["applets/cosmic-applet-graphics", "applets/cosmic-applet-network", "applets/cosmic-applet-power"]

applets/cosmic-applet-power/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "cosmic-applet-power"
+version = "0.1.0"
+edition = "2021"
+license = "LGPL-3.0-or-later"
+
+[dependencies]
+futures-util = "0.3.21"
+gtk4 = "0.4.6"
+logind-zbus = "3.0.1"
+once_cell = "1.9.0"
+relm4-macros = "0.4.1"
+tokio = { version = "1.15.0", features = ["full"] }
+zbus = "2.0.1"

applets/cosmic-applet-power/src/main.rs

@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: LGPL-3.0-or-later
+
+#[macro_use]
+extern crate relm4_macros;
+
+use gtk4::{gio::ApplicationFlags, prelude::*, Orientation, Separator};
+use once_cell::sync::Lazy;
+use tokio::runtime::Runtime;
+
+static RT: Lazy<Runtime> = Lazy::new(|| Runtime::new().expect("failed to build tokio runtime"));
+
+fn main() {
+    let application = gtk4::Application::new(
+        Some("com.system76.cosmic.applets.power"),
+        ApplicationFlags::default(),
+    );
+    application.connect_activate(build_ui);
+    application.run();
+}
+
+fn build_ui(application: &gtk4::Application) {
+    let window = gtk4::ApplicationWindow::builder()
+        .application(application)
+        .title("COSMIC Power Applet")
+        .default_width(400)
+        .default_height(300)
+        .build();
+
+    view! {
+        main_box = gtk4::Box {
+            set_orientation: Orientation::Vertical,
+            set_spacing: 10,
+            set_margin_top: 20,
+            set_margin_bottom: 20,
+            set_margin_start: 24,
+            set_margin_end: 24
+        }
+    }
+    window.set_child(Some(&main_box));
+
+    window.show();
+}