From b21b03c137fd919658d96eef310fbb8b14bec1b4 Mon Sep 17 00:00:00 2001
From: Sergey Stepanov <sergystepanov@gmail.com>
Date: Mon, 4 Mar 2024 22:07:45 +0300
Subject: [PATCH] Add numlock, capslock, and scrollock

---
 web/js/api/api.js | 48 +++++++++++++++++++++++------------------------
 1 file changed, 23 insertions(+), 25 deletions(-)

diff --git a/web/js/api/api.js b/web/js/api/api.js
index 5f4f0db02..6371ba480 100644
--- a/web/js/api/api.js
+++ b/web/js/api/api.js
@@ -41,27 +41,29 @@ const api = (() => {
 
     const decodeBytes = (b) => String.fromCharCode.apply(null, new Uint8Array(b))
 
-    const keyboardPress = (pressed = false, e) => {
+    const keyboardPress = (() => {
+        // 0 1 2 3 4 5 6
+        // [CODE ] P MOD
         const buffer = new ArrayBuffer(7);
         const dv = new DataView(buffer);
 
-        // 0 1 2 3 4 5 6
-        dv.setUint8(4, pressed ? 1 : 0)
-        const k = libretro.map('', e.code);
-        dv.setUint32(0, k)
-
-        // meta keys
-        let mod = 0;
-
-        e.altKey && (mod |= libretro.mod.ALT)
-        e.ctrlKey && (mod |= libretro.mod.CTRL)
-        e.metaKey && (mod |= libretro.mod.META)
-        e.shiftKey && (mod |= libretro.mod.SHIFT)
-
-        dv.setUint16(5, mod)
-
-        webrtc.keyboard(buffer);
-    }
+        return (pressed = false, e) => {
+            const key = libretro.mod;
+            const code = libretro.map('', e.code);
+            const mod = 0
+                | (e.altKey && key.ALT)
+                | (e.ctrlKey && key.CTRL)
+                | (e.metaKey && key.META)
+                | (e.shiftKey && key.SHIFT)
+                | (e.getModifierState('NumLock') && key.NUMLOCK)
+                | (e.getModifierState('CapsLock') && key.CAPSLOCK)
+                | (e.getModifierState('ScrollLock') && key.SCROLLOCK)
+            dv.setUint32(0, code);
+            dv.setUint8(4, +pressed);
+            dv.setUint16(5, mod)
+            webrtc.keyboard(buffer);
+        }
+    })();
 
     const mouseMove = (() => {
         // 0 1 2 3 4
@@ -310,17 +312,13 @@ libretro = function () {// RETRO_KEYBOARD
 
     const retroMod = {
         NONE: 0x0000,
-
         SHIFT: 0x01,
         CTRL: 0x02,
         ALT: 0x04,
         META: 0x08,
-
-        // RETROKMOD_NUMLOCK    = 0x10,
-        // RETROKMOD_CAPSLOCK   = 0x20,
-        // RETROKMOD_SCROLLOCK  = 0x40,
-
-        // RETROKMOD_DUMMY = INT_MAX /* Ensure sizeof(enum) == sizeof(int) */
+        NUMLOCK: 0x10,
+        CAPSLOCK: 0x20,
+        SCROLLOCK: 0x40,
     };
 
     const _map = (key = '', code = '') => {