Log errors via Windows notification system

Cargo.toml

@@ -6,7 +6,6 @@ members = [
     "example_tcp_client",
     "tcp_protocol",
     "windows_key_tester",
-    "win_dbg_logger",
     "simulated_input",
     "simulated_passthru",
 ]
@@ -42,6 +41,7 @@ anyhow = "1"
 clap = { version = "4", features = [ "std", "derive", "help", "suggestions" ], default_features = false }
 dirs = "5.0.1"
 indoc = { version = "2.0.4", optional = true }
+strip-ansi-escapes = { version = "0.2.0", optional = true }
 instant = { version = "0.1.12", default_features = false }
 log = { version = "0.4.8", default_features = false }
 miette = { version = "5.7.0", features = ["fancy"] }
@@ -82,6 +82,7 @@ winapi = { version = "0.3.9", features = [
     "wincon",
     "timeapi",
     "mmsystem",
+    "processthreadsapi",
 ] }
 windows-sys = { version = "0.52.0", features = [
     "Win32_Devices_DeviceAndDriverInstallation",
@@ -101,7 +102,6 @@ windows-sys = { version = "0.52.0", features = [
     "Wdk_System",
     "Wdk_System_SystemServices",
 ], optional=true }
-win_dbg_logger = { path = "win_dbg_logger", optional = true }
 native-windows-gui = { version = "1.0.13", default_features = false}
 native-windows-derive = { version = "1.0.5", default_features = false, optional = true }
 regex = { version = "1.10.4", optional = true }
@@ -126,7 +126,7 @@ simulated_output = ["indoc"]
 simulated_input = ["indoc"]
 passthru_ahk = ["simulated_input","simulated_output"]
 wasm = [ "instant/wasm-bindgen" ]
-gui = ["win_manifest","native-windows-derive","win_dbg_logger","win_dbg_logger/simple_shared","kanata-parser/gui","native-windows-gui/tray-notification","native-windows-gui/message-window","native-windows-gui/menu","native-windows-gui/cursor","native-windows-gui/high-dpi","native-windows-gui/embed-resource","native-windows-gui/image-decoder","native-windows-gui/notice","native-windows-gui/animation-timer","muldiv","dep:windows-sys","win_sendinput_send_scancodes","win_llhook_read_scancodes"]
+gui = ["win_manifest","native-windows-derive","kanata-parser/gui","native-windows-gui/tray-notification","native-windows-gui/message-window","native-windows-gui/menu","native-windows-gui/cursor","native-windows-gui/high-dpi","native-windows-gui/embed-resource","native-windows-gui/image-decoder","native-windows-gui/notice","native-windows-gui/animation-timer","muldiv","strip-ansi-escapes","dep:windows-sys","win_sendinput_send_scancodes","win_llhook_read_scancodes"]
 
 [profile.release]
 opt-level = "z"

cfg_samples/tray-icon/tray-icon.kbd

@@ -1,12 +1,16 @@
 (defcfg
-  process-unmapped-keys	yes	;;|no| enable processing of keys that are not in defsrc, useful if mapping a few keys in defsrc instead of most of the keys on your keyboard. Without this, the tap-hold-release and tap-hold-press actions will not activate for keys that are not in defsrc. Disabled because some keys may not work correctly if they are intercepted. E.g. rctl/altgr on Windows; see the windows-altgr configuration item above for context.
-  log-layer-changes    	yes	;;|no| overhead
+  process-unmapped-keys		yes	;;|no| enable processing of keys that are not in defsrc, useful if mapping a few keys in defsrc instead of most of the keys on your keyboard. Without this, the tap-hold-release and tap-hold-press actions will not activate for keys that are not in defsrc. Disabled because some keys may not work correctly if they are intercepted. E.g. rctl/altgr on Windows; see the windows-altgr configuration item above for context.
+  log-layer-changes    		yes	;;|no| overhead
   tray-icon "./_custom-icons/s.png" ;; should activate for layers without icons like '5no-icn'
-  icon-match-layer-name yes ;;|yes| match layer name to icon files even without an explicit (icon name.ico) config
-  tooltip-layer-changes	yes  	;;|false|
-  tooltip-show-blank   	yes  	;;|no|
-  tooltip-duration     	500  	;;|500|
-  tooltip-size         	24,24	;;|24 24|
+  ;;opt                   	val  	  |≝|
+  icon-match-layer-name   	yes  	;;|yes| match layer name to icon files even without an explicit (icon name.ico) config
+  tooltip-layer-changes   	yes  	;;|false|
+  tooltip-show-blank      	yes  	;;|no|
+  tooltip-duration        	500  	;;|500|
+  tooltip-size            	24,24	;;|24 24|
+  notify-cfg-reload       	yes  	;;|yes|
+  notify-cfg-reload-silent	no   	;;|no|
+  notify-error            	yes  	;;|yes|
 )
 (defalias l1 (layer-while-held 1emoji))
 (defalias l2 (layer-while-held 2icon-quote))

docs/config.adoc

@@ -2543,6 +2543,12 @@ Show system notification message on config reload. Defaults to true. Requires <<
 
 Disable sound for the system notification message on config reload. Defaults to false. Requires <<windows-only-win-tray>> gui-enabled build.
 
+[[windows-only-notify-error]]
+=== Windows only: notify-error
+<<table-of-contents,Back to ToC>>
+
+Show system notification message on kanata errors. Defaults to true. Requires <<windows-only-win-tray>> gui-enabled build.
+
 [[using-multiple-defcfg-options]]
 === Using multiple defcfg options
 <<table-of-contents,Back to ToC>>

parser/src/cfg/defcfg.rs

@@ -32,6 +32,9 @@ pub struct CfgOptionsGui {
     /// Disable sound for the system notification message on config reload
     #[cfg(all(target_os = "windows", feature = "gui"))]
     pub notify_cfg_reload_silent: bool,
+    /// Show system notification message on errors
+    #[cfg(all(target_os = "windows", feature = "gui"))]
+    pub notify_error: bool,
     /// Set tooltip size (width, height)
     #[cfg(all(target_os = "windows", feature = "gui"))]
     pub tooltip_size: (u16, u16),
@@ -48,6 +51,7 @@ impl Default for CfgOptionsGui {
             tooltip_duration: 500,
             notify_cfg_reload: true,
             notify_cfg_reload_silent: false,
+            notify_error: true,
             tooltip_size: (24, 24),
         }
     }
@@ -527,6 +531,15 @@ pub fn parse_defcfg(expr: &[SExpr]) -> Result<CfgOptions> {
                                 parse_defcfg_val_bool(val, label)?
                         }
                     }
+                    "notify-error" => {
+                        #[cfg(all(
+                            any(target_os = "windows", target_os = "unknown"),
+                            feature = "gui"
+                        ))]
+                        {
+                            cfg.gui_opts.notify_error = parse_defcfg_val_bool(val, label)?
+                        }
+                    }
                     "tooltip-size" => {
                         #[cfg(all(
                             any(target_os = "windows", target_os = "unknown"),

parser/src/cfg/tests.rs

@@ -1297,6 +1297,7 @@ fn parse_all_defcfg() {
   tooltip-size 24,24
   notify-cfg-reload yes
   notify-cfg-reload-silent no
+  notify-error yes
   windows-altgr add-lctl-release
   windows-interception-mouse-hwid "70, 0, 60, 0"
   windows-interception-mouse-hwids ("0, 0, 0" "1, 1, 1")

src/gui/mod.rs

@@ -1,13 +1,17 @@
 pub mod win;
 pub use win::*;
+pub mod win_dbg_logger;
 pub mod win_nwg_ext;
 pub use win_dbg_logger as log_win;
 pub use win_dbg_logger::WINDBG_LOGGER;
 pub use win_nwg_ext::*;
 
 use crate::*;
 use parking_lot::Mutex;
+use std::sync::mpsc::Sender as ASender;
 use std::sync::{Arc, OnceLock};
 pub static CFG: OnceLock<Arc<Mutex<Kanata>>> = OnceLock::new();
 pub static GUI_TX: OnceLock<native_windows_gui::NoticeSender> = OnceLock::new();
 pub static GUI_CFG_TX: OnceLock<native_windows_gui::NoticeSender> = OnceLock::new();
+pub static GUI_ERR_TX: OnceLock<native_windows_gui::NoticeSender> = OnceLock::new();
+pub static GUI_ERR_MSG_TX: OnceLock<ASender<(String, String)>> = OnceLock::new();

src/gui/win.rs

@@ -96,7 +96,12 @@ pub struct SystemTray {
     win_tt_timer: nwg::AnimationTimer,
     pub layer_notice: nwg::Notice,
     pub cfg_notice: nwg::Notice,
+    pub err_notice: nwg::Notice,
     pub tt_notice: nwg::Notice,
+    /// Receiver of error message content sent from other threads
+    /// (e.g., from key event thread via WinDbgLogger that will also notify our GUI
+    /// (but not pass data) after sending data to this receiver)
+    pub err_recv: Option<Receiver<(String, String)>>,
     pub tt2m_channel: Option<(ASender<bool>, Receiver<bool>)>,
     // receiver will be created before a thread is spawned and moved there
     pub m2tt_sender: RefCell<Option<ASender<bool>>>,
@@ -125,7 +130,7 @@ const ASSET_FD: [&str; 4] = ["", "icon", "img", "icons"];
 const IMG_EXT: [&str; 7] = ["ico", "jpg", "jpeg", "png", "bmp", "dds", "tiff"];
 const PRE_LAYER: &str = "\n🗍: "; // : invalid path marker, so should be safe to use as a separator
 const TTTIMER_L: u16 = 9; // lifetime delta to duration for a tooltip timer
-use crate::gui::{CFG, GUI_CFG_TX, GUI_TX};
+use crate::gui::{CFG, GUI_CFG_TX, GUI_ERR_MSG_TX, GUI_ERR_TX, GUI_TX};
 
 pub fn send_gui_notice() {
     if let Some(gui_tx) = GUI_TX.get() {
@@ -141,6 +146,26 @@ pub fn send_gui_cfg_notice() {
         error!("no GUI_CFG_TX to notify GUI thread of layer changes");
     }
 }
+pub fn send_gui_err_notice() {
+    if let Some(gui_tx) = GUI_ERR_TX.get() {
+        gui_tx.notice();
+    } else {
+        error!("no GUI_ERR_TX to notify GUI thread of errors");
+    }
+}
+pub fn show_err_msg_nofail(title: String, msg: String) {
+    // log gets intialized before gui, so some errors might have no target to log to, ignore it
+    if let Some(gui_msg_tx) = GUI_ERR_MSG_TX.get() {
+        if gui_msg_tx.send((title, msg)).is_err() {
+            warn!("send_gui_err_msg_notice failed to use OS notifications")
+        } else {
+            // can't Error to avoid an ∞ error loop ↑
+            if let Some(gui_tx) = GUI_ERR_TX.get() {
+                gui_tx.notice();
+            } //else {warn!("no GUI_ERR_TX to notify GUI thread of errors")}
+        }
+    } //else {warn!("no GUI_ERR_MSG_TX to notify GUI thread of errors")}
+}
 
 /// Find an icon file that matches a given config icon name for a layer `lyr_icn` or a layer name
 /// `lyr_nm` (if `match_name` is `true`) or a given config icon name for the whole config `cfg_p`
@@ -921,6 +946,48 @@ impl SystemTray {
     fn reload_layer_icon(&self) {
         let _ = self.reload_cfg_or_layer_icon(false);
     }
+    /// Show OS notification message with an error coming from WinDbgLogger
+    fn notify_error(&self) {
+        let app_data = self.app_data.borrow();
+        if !app_data.gui_opts.notify_error {
+            return;
+        };
+        use nwg::TrayNotificationFlags as f_tray;
+        let mut msg_title = "".to_string();
+        let mut msg_content = "".to_string();
+        let mut flags = f_tray::empty();
+        if let Some(gsui_msg_rx) = &self.err_recv {
+            match gsui_msg_rx.try_recv() {
+                Ok((title, msg)) => {
+                    msg_title += &title;
+                    msg_content += &msg;
+                }
+                Err(TryRecvError::Empty) => {
+                    msg_title += "internal";
+                    msg_content += "channel to receive errors is Empty";
+                }
+                Err(TryRecvError::Disconnected) => {
+                    msg_title += "internal";
+                    msg_content += "channel to receive errors is Disconnected";
+                }
+            }
+        } else {
+            msg_title += "internal";
+            msg_content += "SystemTray is supposed to have a valid 'err_recv' field value"
+        }
+        flags |= f_tray::ERROR_ICON;
+        if app_data.gui_opts.notify_cfg_reload_silent {
+            flags |= f_tray::SILENT;
+        }
+        let msg_title = strip_ansi_escapes::strip_str(&msg_title);
+        let msg_content = strip_ansi_escapes::strip_str(&msg_content);
+        self.tray.show(
+            &msg_content,
+            Some(&msg_title),
+            Some(flags),
+            Some(&self.icon),
+        );
+    }
     /// Update tray icon data on config reload
     fn reload_cfg_icon(&self) {
         let _ = self.reload_cfg_or_layer_icon(true);
@@ -1227,6 +1294,11 @@ pub mod system_tray_ui {
 
             let (sndr, rcvr) = std::sync::mpsc::channel();
             d.tt2m_channel = Some((sndr, rcvr));
+            let (sndr, rcvr) = std::sync::mpsc::channel();
+            d.err_recv = Some(rcvr);
+            if GUI_ERR_MSG_TX.set(sndr).is_err() {
+                warn!("Someone else set our ‘GUI_ERR_MSG_TX’");
+            };
 
             // Controls
             nwg::MessageWindow::builder().build(&mut d.window)?;
@@ -1243,6 +1315,9 @@ pub mod system_tray_ui {
             nwg::Notice::builder()
                 .parent(&d.window)
                 .build(&mut d.tt_notice)?;
+            nwg::Notice::builder()
+                .parent(&d.window)
+                .build(&mut d.err_notice)?;
             nwg::Menu::builder()
                 .parent(&d.tray_menu)
                 .text("&F Load config") //
@@ -1442,6 +1517,8 @@ pub mod system_tray_ui {
                                 SystemTray::reload_layer_icon(&evt_ui);
                             } else if handle == evt_ui.cfg_notice {
                                 SystemTray::reload_cfg_icon(&evt_ui);
+                            } else if handle == evt_ui.err_notice {
+                                SystemTray::notify_error(&evt_ui);
                             } else if handle == evt_ui.tt_notice {
                                 SystemTray::update_tooltip_pos(&evt_ui);}
                         E::OnWindowClose =>