Add window pointer enter and leave signals

api/lua/pinnacle/output.lua

@@ -164,6 +164,10 @@ function output.connect_for_all(callback)
     })
 end
 
+local signal_name_to_SignalName = {
+    connect = "OutputConnect",
+}
+
 ---@class OutputSignal
 ---@field connect fun(output: OutputHandle)?
 
@@ -174,12 +178,10 @@ function output.connect_signal(signals)
     local handles = require("pinnacle.signal").handles.new({})
 
     for signal, callback in pairs(signals) do
-        if signal == "connect" then
-            require("pinnacle.signal").add_callback("OutputConnect", callback)
-            ---@diagnostic disable-next-line: invisible
-            local handle = require("pinnacle.signal").handle.new("OutputConnect", callback)
-            handles[signal] = handle
-        end
+        require("pinnacle.signal").add_callback(signal_name_to_SignalName[signal], callback)
+        ---@diagnostic disable-next-line: invisible
+        local handle = require("pinnacle.signal").handle.new(signal_name_to_SignalName[signal], callback)
+        handles[signal] = handle
     end
 
     return handles

api/lua/pinnacle/signal.lua

@@ -70,7 +70,7 @@ local signals = {
     WindowPointerEnter = {
         ---@type H2Stream?
         sender = nil,
-        ---@type (fun(output: OutputHandle))[]
+        ---@type (fun(window: WindowHandle))[]
         callbacks = {},
         ---@type fun(response: table)
         on_response = nil,
@@ -78,7 +78,7 @@ local signals = {
     WindowPointerLeave = {
         ---@type H2Stream?
         sender = nil,
-        ---@type (fun(output: OutputHandle))[]
+        ---@type (fun(window: WindowHandle))[]
         callbacks = {},
         ---@type fun(response: table)
         on_response = nil,
@@ -104,6 +104,24 @@ signals.Layout.on_response = function(response)
     end
 end
 
+signals.WindowPointerEnter.on_response = function(response)
+    ---@diagnostic disable-next-line: invisible
+    local window_handle = require("pinnacle.window").handle.new(response.window_id)
+
+    for _, callback in ipairs(signals.WindowPointerEnter.callbacks) do
+        callback(window_handle)
+    end
+end
+
+signals.WindowPointerLeave.on_response = function(response)
+    ---@diagnostic disable-next-line: invisible
+    local window_handle = require("pinnacle.window").handle.new(response.window_id)
+
+    for _, callback in ipairs(signals.WindowPointerLeave.callbacks) do
+        callback(window_handle)
+    end
+end
+
 -----------------------------------------------------------------------------
 
 ---@class SignalHandleModule

api/lua/pinnacle/tag.lua

@@ -319,6 +319,10 @@ function tag.new_layout_cycler(layouts)
     }
 end
 
+local signal_name_to_SignalName = {
+    layout = "Layout",
+}
+
 ---@class TagSignal
 ---@field layout fun(tag: TagHandle, windows: WindowHandle[])?
 
@@ -329,12 +333,10 @@ function tag.connect_signal(signals)
     local handles = require("pinnacle.signal").handles.new({})
 
     for signal, callback in pairs(signals) do
-        if signal == "layout" then
-            require("pinnacle.signal").add_callback("Layout", callback)
-            ---@diagnostic disable-next-line: invisible
-            local handle = require("pinnacle.signal").handle.new("Layout", callback)
-            handles[signal] = handle
-        end
+        require("pinnacle.signal").add_callback(signal_name_to_SignalName[signal], callback)
+        ---@diagnostic disable-next-line: invisible
+        local handle = require("pinnacle.signal").handle.new(signal_name_to_SignalName[signal], callback)
+        handles[signal] = handle
     end
 
     return handles

api/lua/pinnacle/window.lua

@@ -311,6 +311,33 @@ function window.add_window_rule(rule)
     }))
 end
 
+local signal_name_to_SignalName = {
+    pointer_enter = "WindowPointerEnter",
+    pointer_leave = "WindowPointerLeave",
+}
+
+---@class WindowSignal
+---@field pointer_enter fun(window: WindowHandle)?
+---@field pointer_leave fun(window: WindowHandle)?
+
+---@param signals WindowSignal
+---@return SignalHandles
+function window.connect_signal(signals)
+    ---@diagnostic disable-next-line: invisible
+    local handles = require("pinnacle.signal").handles.new({})
+
+    for signal, callback in pairs(signals) do
+        require("pinnacle.signal").add_callback(signal_name_to_SignalName[signal], callback)
+        ---@diagnostic disable-next-line: invisible
+        local handle = require("pinnacle.signal").handle.new(signal_name_to_SignalName[signal], callback)
+        handles[signal] = handle
+    end
+
+    return handles
+end
+
+------------------------------------------------------------------------
+
 ---Send a close request to this window.
 ---
 ---### Example

src/api/signal.rs

@@ -22,6 +22,15 @@ pub struct SignalState {
         SignalData<WindowPointerLeaveResponse, VecDeque<WindowPointerLeaveResponse>>,
 }
 
+impl SignalState {
+    pub fn clear(&mut self) {
+        self.output_connect.disconnect();
+        self.layout.disconnect();
+        self.window_pointer_enter.disconnect();
+        self.window_pointer_leave.disconnect();
+    }
+}
+
 #[derive(Debug, Default)]
 #[allow(private_bounds)]
 pub struct SignalData<T, B: SignalBuffer<T>> {

src/config.rs

@@ -265,6 +265,8 @@ impl State {
 
         self.config.clear(&self.loop_handle);
 
+        self.signal_state.clear();
+
         // Because the grpc server is implemented to only start once,
         // any updates to `socket_dir` won't be applied until restart.
         if self.grpc_server_join_handle.is_none() {