add: implement ios

.changes/badge_count.md

@@ -2,4 +2,4 @@
 "tao": patch
 ---
 
-Add **set_badge_count** for Linux; **set_badge_label** for Macos; **set_overlay_icon** for Windows
+Add **set_badge_count** for Linux, iOS; **set_badge_label** for Macos; **set_overlay_icon** for Windows

src/platform_impl/ios/badge.rs

@@ -0,0 +1,10 @@
+use objc::runtime::{Class, Object};
+use objc::{msg_send, sel, sel_impl};
+
+pub fn set_badge_count(count: i32) {
+  unsafe {
+    let ui_application = Class::get("UIApplication").expect("Failed to get UIApplication class");
+    let app: *mut Object = msg_send![ui_application, sharedApplication];
+    let _: () = msg_send![app, setApplicationIconBadgeNumber:count];
+  }
+}

src/platform_impl/ios/event_loop.rs

@@ -22,6 +22,7 @@ use crate::{
 };
 
 use crate::platform_impl::platform::{
+  set_badge_count,
   app_state,
   ffi::{
     id, kCFRunLoopAfterWaiting, kCFRunLoopBeforeWaiting, kCFRunLoopCommonModes,
@@ -94,6 +95,11 @@ impl<T: 'static> EventLoopWindowTarget<T> {
     debug!("`EventLoopWindowTarget::cursor_position` is ignored on iOS");
     Ok((0, 0).into())
   }
+
+  /// Sets badge count on iOS launcher. 0 hides the count
+  pub fn set_badge_count(&self, count: i32) {
+    set_badge_count(count);
+  }
 }
 
 #[derive(Default, Debug, Copy, Clone, PartialEq, Eq, Hash)]

src/platform_impl/ios/mod.rs

@@ -80,6 +80,7 @@ mod keycode;
 mod monitor;
 mod view;
 mod window;
+mod badge;
 
 use std::fmt;
 
@@ -90,7 +91,7 @@ pub use self::{
   monitor::{MonitorHandle, VideoMode},
   window::{PlatformSpecificWindowBuilderAttributes, Window, WindowId},
 };
-
+pub(crate) use badge::set_badge_count;
 pub(crate) use crate::icon::NoIcon as PlatformIcon;
 
 // todo: implement iOS keyboard event

src/platform_impl/ios/window.rs

@@ -17,6 +17,7 @@ use crate::{
   monitor::MonitorHandle as RootMonitorHandle,
   platform::ios::{MonitorHandleExtIOS, ScreenEdge, ValidOrientations},
   platform_impl::platform::{
+    set_badge_count,
     app_state,
     event_loop::{self, EventProxy, EventWrapper},
     ffi::{
@@ -440,6 +441,11 @@ impl Inner {
   pub fn theme(&self) -> Theme {
     Theme::Light
   }
+
+  /// Sets badge count on iOS launcher. 0 hides the count
+  pub fn set_badge_count(&self, count: i32) {
+    set_badge_count(count);
+  }
 }
 
 pub struct Window {