config: allow retrieving the modes

src/compositor.rs

@@ -375,6 +375,7 @@ fn create_dummy_output(state: &Rc<State>) {
                 async_event: Default::default(),
             }),
             0,
+            Vec::new(),
             &backend::Mode {
                 width: 0,
                 height: 0,

src/config/handler.rs

@@ -27,6 +27,7 @@ use {
         _private::{
             bincode_ops,
             ipc::{ClientMessage, Response, ServerMessage},
+            WireMode,
         },
         input::{
             acceleration::{AccelProfile, ACCEL_PROFILE_ADAPTIVE, ACCEL_PROFILE_FLAT},
@@ -694,6 +695,24 @@ impl ConfigProxyHandler {
         Ok(())
     }
 
+    fn handle_connector_modes(&self, connector: Connector) -> Result<(), CphError> {
+        let connector = self.get_output(connector)?;
+        self.respond(Response::ConnectorModes {
+            modes: connector
+                .node
+                .global
+                .modes
+                .iter()
+                .map(|m| WireMode {
+                    width: m.width,
+                    height: m.height,
+                    refresh_millihz: m.refresh_rate_millihz,
+                })
+                .collect(),
+        });
+        Ok(())
+    }
+
     fn handle_set_cursor_size(&self, seat: Seat, size: i32) -> Result<(), CphError> {
         let seat = self.get_seat(seat)?;
         if size < 0 {
@@ -1369,6 +1388,9 @@ impl ConfigProxyHandler {
             ClientMessage::SetDoubleClickDistance { dist } => {
                 self.handle_set_double_click_distance(dist)
             }
+            ClientMessage::ConnectorModes { connector } => self
+                .handle_connector_modes(connector)
+                .wrn("connector_modes")?,
         }
         Ok(())
     }

src/ifs/wl_output.rs

@@ -66,6 +66,7 @@ pub struct WlOutputGlobal {
     pub pos: Cell<Rect>,
     pub output_id: Rc<OutputId>,
     pub mode: Cell<backend::Mode>,
+    pub modes: Vec<backend::Mode>,
     pub node: CloneCell<Option<Rc<OutputNode>>>,
     pub width_mm: i32,
     pub height_mm: i32,
@@ -96,6 +97,7 @@ impl WlOutputGlobal {
         state: &Rc<State>,
         connector: &Rc<ConnectorData>,
         x1: i32,
+        modes: Vec<backend::Mode>,
         mode: &backend::Mode,
         manufacturer: &str,
         product: &str,
@@ -122,6 +124,7 @@ impl WlOutputGlobal {
             pos: Cell::new(Rect::new_sized(x1, 0, width, height).unwrap()),
             output_id,
             mode: Cell::new(*mode),
+            modes,
             node: Default::default(),
             width_mm,
             height_mm,

src/tasks/connector.rs

@@ -94,6 +94,7 @@ impl ConnectorHandler {
             &self.state,
             &self.data,
             x1,
+            info.modes.clone(),
             &info.initial_mode,
             &info.manufacturer,
             &info.product,