Added example

iced_layershell/README.md

@@ -468,4 +468,83 @@ impl Counter {
 
 ```
 
+### Dynamically set input region
+```rust, no_run
+
+use iced::widget::{button, row, Space};
+use iced::{Color, Element, Length, Task as Command, Theme};
+use iced_layershell::settings::{LayerShellSettings, Settings};
+use iced_layershell::to_layer_message;
+use iced_layershell::Application;
+
+pub fn main() -> Result<(), iced_layershell::Error> {
+    InputRegionExample::run(Settings {
+        layer_settings: LayerShellSettings {
+            size: Some((400, 400)),
+            ..Default::default()
+        },
+        ..Default::default()
+    })
+}
+
+struct InputRegionExample;
+
+#[to_layer_message]
+#[derive(Debug, Clone)]
+#[doc = "Some docs"]
+enum Message {
+    SetRegion,
+    UnsetRegion,
+}
+
+impl Application for InputRegionExample {
+    type Message = Message;
+    type Flags = ();
+    type Theme = Theme;
+    type Executor = iced::executor::Default;
+
+    fn new(_flags: ()) -> (Self, Command<Message>) {
+        (Self, Command::none())
+    }
+
+    fn namespace(&self) -> String {
+        String::from("Counter - Iced")
+    }
+
+    fn update(&mut self, message: Message) -> Command<Message> {
+        match message {
+            Message::SetRegion => Command::done(Message::SetInputRegion(|region| {
+                // Only the buttons!
+                region.add(0, 0, 400, 70);
+            })),
+            Message::UnsetRegion => Command::done(Message::SetInputRegion(|region| {
+                // Entire window!
+                region.add(0, 0, 400, 400);
+            })),
+            _ => unreachable!(),
+        }
+    }
+
+    fn view(&self) -> Element<Message> {
+        // Create the top row with two buttons
+        row![
+            button("Set region").on_press(Message::SetRegion),
+            Space::with_width(Length::Fill),
+            button("Reset region").on_press(Message::UnsetRegion),
+        ]
+        .padding(20)
+        .spacing(10)
+        .width(Length::Fill)
+        .into()
+    }
+
+    fn style(&self, theme: &Self::Theme) -> iced_layershell::Appearance {
+        use iced_layershell::Appearance;
+        Appearance {
+            background_color: Color::from_rgba(0.3, 0.3, 0.3, 0.3),
+            text_color: theme.palette().text,
+        }
+    }
+}
+```
 For more example, please take a look at [exwlshelleventloop](https://github.com/waycrate/exwlshelleventloop)

iced_layershell/src/application.rs

@@ -278,18 +278,15 @@ where
                     LayershellCustomActions::SetInputRegion(set_region) => {
                         let window = ev.main_window();
 
-                        if let Some(region) = &wl_input_region {
-                            let window_size = window.get_size();
-                            let width: i32 = window_size.0.try_into().unwrap_or_default();
-                            let height: i32 = window_size.1.try_into().unwrap_or_default();
+                        let region = wl_input_region.as_ref().expect("region not found");
+                        let window_size = window.get_size();
+                        let width: i32 = window_size.0.try_into().unwrap_or_default();
+                        let height: i32 = window_size.1.try_into().unwrap_or_default();
 
-                            region.subtract(0, 0, width, height);
-                            set_region(region);
-                        }
+                        region.subtract(0, 0, width, height);
+                        set_region(&region);
 
-                        window
-                            .get_wlsurface()
-                            .set_input_region(wl_input_region.as_ref());
+                        window.get_wlsurface().set_input_region(Some(&region));
                     }
                     LayershellCustomActions::MarginChange(margin) => {
                         ev.main_window().set_margin(margin);