Provide HotkeyState on Global Shortcut Events (#3822)

* Only react to hotkeys that are pressed

The global shortcuts are otherwise also triggering when the hotkey is
being released. This affects at least Windows.

* Provide `HotkeyState` on Global Shortcut Events

Instead of ignoring the events where the shortcut is released, the state
is now provided as an argument to the event handler.

examples/overlay.rs

@@ -6,7 +6,7 @@
 //! We also add a global shortcut to toggle the overlay on and off, so you could build a raycast-type app with this.
 
 use dioxus::desktop::{
-    tao::dpi::PhysicalPosition, use_global_shortcut, LogicalSize, WindowBuilder,
+    tao::dpi::PhysicalPosition, use_global_shortcut, HotKeyState, LogicalSize, WindowBuilder,
 };
 use dioxus::prelude::*;
 
@@ -19,7 +19,11 @@ fn main() {
 fn app() -> Element {
     let mut show_overlay = use_signal(|| true);
 
-    _ = use_global_shortcut("cmd+g", move || show_overlay.toggle());
+    _ = use_global_shortcut("cmd+g", move |state| {
+        if state == HotKeyState::Pressed {
+            show_overlay.toggle();
+        }
+    });
 
     rsx! {
         document::Link {

examples/shortcut.rs

@@ -5,7 +5,7 @@
 //!
 //! These are *global* shortcuts, so they will work even if your app is not in focus.
 
-use dioxus::desktop::use_global_shortcut;
+use dioxus::desktop::{use_global_shortcut, HotKeyState};
 use dioxus::prelude::*;
 
 fn main() {
@@ -15,7 +15,11 @@ fn main() {
 fn app() -> Element {
     let mut toggled = use_signal(|| false);
 
-    _ = use_global_shortcut("ctrl+s", move || toggled.toggle());
+    _ = use_global_shortcut("ctrl+s", move |state| {
+        if state == HotKeyState::Pressed {
+            toggled.toggle();
+        }
+    });
 
     rsx!("toggle: {toggled}")
 }