Re-added SDL_GetScancodeFromKey()

include/SDL3/SDL_keyboard.h

@@ -199,9 +199,29 @@ extern SDL_DECLSPEC void SDLCALL SDL_SetModState(SDL_Keymod modstate);
  * \since This function is available since SDL 3.0.0.
  *
  * \sa SDL_GetKeyName
+ * \sa SDL_GetScancodeFromKey
  */
 extern SDL_DECLSPEC SDL_Keycode SDLCALL SDL_GetKeyFromScancode(SDL_Scancode scancode, SDL_Keymod modstate, SDL_bool key_event);
 
+/**
+ * Get the scancode corresponding to the given key code according to the
+ * current keyboard layout.
+ *
+ * Note that there may be multiple scancode+modifier states that can generate
+ * this keycode, this will just return the first one found.
+ *
+ * \param key the desired SDL_Keycode to query.
+ * \param modstate a pointer to the modifier state that would be used when the
+ *                 scancode generates this key, may be NULL.
+ * \returns the SDL_Scancode that corresponds to the given SDL_Keycode.
+ *
+ * \since This function is available since SDL 3.0.0.
+ *
+ * \sa SDL_GetKeyFromScancode
+ * \sa SDL_GetScancodeName
+ */
+extern SDL_DECLSPEC SDL_Scancode SDLCALL SDL_GetScancodeFromKey(SDL_Keycode key, SDL_Keymod *modstate);
+
 /**
  * Set a human-readable name for a scancode.
  *

src/dynapi/SDL_dynapi.sym

@@ -411,6 +411,7 @@ SDL3_0.0.0 {
     SDL_GetRendererProperties;
     SDL_GetRevision;
     SDL_GetSIMDAlignment;
+    SDL_GetScancodeFromKey;
     SDL_GetScancodeFromName;
     SDL_GetScancodeName;
     SDL_GetSemaphoreValue;

src/dynapi/SDL_dynapi_overrides.h

@@ -436,6 +436,7 @@
 #define SDL_GetRendererProperties SDL_GetRendererProperties_REAL
 #define SDL_GetRevision SDL_GetRevision_REAL
 #define SDL_GetSIMDAlignment SDL_GetSIMDAlignment_REAL
+#define SDL_GetScancodeFromKey SDL_GetScancodeFromKey_REAL
 #define SDL_GetScancodeFromName SDL_GetScancodeFromName_REAL
 #define SDL_GetScancodeName SDL_GetScancodeName_REAL
 #define SDL_GetSemaphoreValue SDL_GetSemaphoreValue_REAL

src/dynapi/SDL_dynapi_procs.h

@@ -456,6 +456,7 @@ SDL_DYNAPI_PROC(const char *,SDL_GetRendererName,(SDL_Renderer *a),(a),return)
 SDL_DYNAPI_PROC(SDL_PropertiesID,SDL_GetRendererProperties,(SDL_Renderer *a),(a),return)
 SDL_DYNAPI_PROC(const char*,SDL_GetRevision,(void),(),return)
 SDL_DYNAPI_PROC(size_t,SDL_GetSIMDAlignment,(void),(),return)
+SDL_DYNAPI_PROC(SDL_Scancode,SDL_GetScancodeFromKey,(SDL_Keycode a, SDL_Keymod *b),(a,b),return)
 SDL_DYNAPI_PROC(SDL_Scancode,SDL_GetScancodeFromName,(const char *a),(a),return)
 SDL_DYNAPI_PROC(const char*,SDL_GetScancodeName,(SDL_Scancode a),(a),return)
 SDL_DYNAPI_PROC(Uint32,SDL_GetSemaphoreValue,(SDL_Semaphore *a),(a),return)

src/events/SDL_keyboard.c

@@ -453,11 +453,11 @@ static SDL_Keycode SDL_ConvertNumpadKeycode(SDL_Keycode keycode, SDL_bool numloc
 SDL_Keycode SDL_GetKeyFromScancode(SDL_Scancode scancode, SDL_Keymod modstate, SDL_bool key_event)
 {
     SDL_Keyboard *keyboard = &SDL_keyboard;
-    SDL_Keycode keycode;
 
     if (key_event) {
         SDL_Keymap *keymap = SDL_GetCurrentKeymap();
         SDL_bool numlock = (modstate & SDL_KMOD_NUM) != 0;
+        SDL_Keycode keycode;
 
         // We won't be applying any modifiers by default
         modstate = SDL_KMOD_NONE;
@@ -474,15 +474,19 @@ SDL_Keycode SDL_GetKeyFromScancode(SDL_Scancode scancode, SDL_Keymod modstate, S
         if (keyboard->keycode_options & KEYCODE_OPTION_HIDE_NUMPAD) {
             keycode = SDL_ConvertNumpadKeycode(keycode, numlock);
         }
-    } else {
-        // Use the real keymap
-        SDL_Keymap *keymap = keyboard->keymap;
-
-        keycode = SDL_GetKeymapKeycode(keymap, scancode, modstate);
-    }
         return keycode;
     }
 
+    return SDL_GetKeymapKeycode(keyboard->keymap, scancode, modstate);
+}
+
+SDL_Scancode SDL_GetScancodeFromKey(SDL_Keycode key, SDL_Keymod *modstate)
+{
+    SDL_Keyboard *keyboard = &SDL_keyboard;
+
+    return SDL_GetKeymapScancode(keyboard->keymap, key, modstate);
+}
+
 static int SDL_SendKeyboardKeyInternal(Uint64 timestamp, Uint32 flags, SDL_KeyboardID keyboardID, int rawcode, SDL_Scancode scancode, Uint8 state)
 {
     SDL_Keyboard *keyboard = &SDL_keyboard;