feat(headerbar): double click to maximize

iced

@@ -1 +1 @@
-Subproject commit cb315f66b8f1372d6b96c0e99abb8d2f79063a4e
+Subproject commit fa817c704dd815cc5723470c49459ad8f81c78f8

src/app/mod.rs

@@ -708,7 +708,8 @@ impl<App: Application> ApplicationExt for App {
                         .title(&core.window.header_title)
                         .on_drag(Message::Cosmic(cosmic::Message::Drag))
                         .on_close(Message::Cosmic(cosmic::Message::Close))
-                        .on_right_click(Message::Cosmic(cosmic::Message::ShowWindowMenu));
+                        .on_right_click(Message::Cosmic(cosmic::Message::ShowWindowMenu))
+                        .on_double_click(Message::Cosmic(cosmic::Message::Maximize));
 
                     if self.nav_model().is_some() {
                         let toggle = crate::widget::nav_bar_toggle()

src/widget/header_bar.rs

@@ -23,6 +23,7 @@ pub fn header_bar<'a, Message>() -> HeaderBar<'a, Message> {
         end: Vec::new(),
         density: None,
         focused: false,
+        on_double_click: None,
     }
 }
 
@@ -48,6 +49,11 @@ pub struct HeaderBar<'a, Message> {
     #[setters(strip_option)]
     on_minimize: Option<Message>,
 
+    /// A message emitted when the header is double clicked,
+    /// usually used to maximize the window.
+    #[setters(strip_option)]
+    on_double_click: Option<Message>,
+
     /// A message emitted when the header is right clicked.
     #[setters(strip_option)]
     on_right_click: Option<Message>,
@@ -327,7 +333,9 @@ impl<'a, Message: Clone + 'static> HeaderBar<'a, Message> {
         if let Some(message) = self.on_maximize.clone() {
             widget = widget.on_release(message);
         }
-
+        if let Some(message) = self.on_double_click.clone() {
+            widget = widget.on_double_press(message);
+        }
         if let Some(message) = self.on_right_click.clone() {
             widget = widget.on_right_press(message);
         }