SDL3: mouse+key: runtime fixes

Author: ankith26

buildconfig/stubs/pygame/mouse.pyi

@@ -292,4 +292,6 @@ def set_relative_mode(enable: bool, /) -> None:
     ``True`` will exit relative mouse mode.
 
     .. versionadded:: 2.4.0
+    .. versionchanged:: 2.5.6 calling this function before calling
+        :func:`pygame.display.set_mode` is deprecated and may error in the future.
     """

src_c/key.c

@@ -389,7 +389,11 @@ static const struct {
     {1073742054, "right alt"},       /* K_RALT */
     {1073742055, "right meta"},      /* K_RGUI, K_RMETA, K_RSUPER */
     {1073742081, "alt gr"},          /* K_MODE */
-    {1073742094, "AC Back"},         /* K_AC_BACK */
+#if SDL_VERSION_ATLEAST(3, 0, 0)
+    {1073742106, "AC Back"}, /* K_AC_BACK */
+#else
+    {1073742094, "AC Back"}, /* K_AC_BACK */
+#endif
 };
 
 /* Get name from keycode using pygame compat table */

src_c/mouse.c

@@ -324,8 +324,9 @@ mouse_get_visible(PyObject *self, PyObject *_null)
 
 #if SDL_VERSION_ATLEAST(3, 0, 0)
     SDL_Window *win = pg_GetDefaultWindow();
-    result =
-        win ? (PG_CursorVisible() && !SDL_GetWindowRelativeMouseMode(win)) : 0;
+
+    /* If win is NULL, SDL_GetWindowRelativeMouseMode returns false */
+    result = (PG_CursorVisible() && !SDL_GetWindowRelativeMouseMode(win));
 #else
     result = (PG_CursorVisible() && !SDL_GetRelativeMouseMode());
 #endif
@@ -618,8 +619,8 @@ mouse_set_relative_mode(PyObject *self, PyObject *arg)
     if (mode == -1) {
         return NULL;
     }
-#if SDL_VERSION_ATLEAST(3, 0, 0)
     SDL_Window *win = pg_GetDefaultWindow();
+#if SDL_VERSION_ATLEAST(3, 0, 0)
     if (!win) {
         return RAISE(pgExc_SDLError,
                      "display.set_mode has not been called yet.");
@@ -628,6 +629,15 @@ mouse_set_relative_mode(PyObject *self, PyObject *arg)
         return RAISE(pgExc_SDLError, SDL_GetError());
     }
 #else
+    if (!win) {
+        if (PyErr_WarnEx(PyExc_DeprecationWarning,
+                         "Calling mouse.set_relative_mode before calling "
+                         "display.set_mode has been deprecated and may raise "
+                         "errors in the future.",
+                         1) == -1) {
+            return NULL;
+        }
+    }
     if (SDL_SetRelativeMouseMode((SDL_bool)mode)) {
         return RAISE(pgExc_SDLError, SDL_GetError());
     }

test/key_test.py

@@ -8,6 +8,7 @@
 
 # keys that are not tested for const-name match
 SKIPPED_KEYS = {"K_UNKNOWN"}
+SKIPPED_KEYS_NEW = {"K_MODE"}
 
 # This is the expected compat output
 KEY_NAME_COMPAT = {
@@ -286,7 +287,8 @@ def test_name_and_key_code(self):
             # This is a test for an implementation detail of name with use_compat=False
             # If this test breaks in the future for any key, it is safe to put skips on
             # failing keys (the implementation detail is documented as being unreliable)
-            self.assertEqual(pygame.key.key_code(alt_name), const_val)
+            if const_name not in SKIPPED_KEYS_NEW:
+                self.assertEqual(pygame.key.key_code(alt_name), const_val)
 
         self.assertRaises(TypeError, pygame.key.name, "fizzbuzz")
         self.assertRaises(TypeError, pygame.key.key_code, pygame.K_a)

test/mouse_test.py

@@ -384,6 +384,15 @@ def test_set_visible__invalid_value(self):
     )
     def test_set_relative_mode(self):
         """Tests that set_relative_mode hides the cursor."""
+        for val in (True, False):
+            if pygame.version.SDL >= (3, 0, 0):
+                with self.assertRaises(pygame.error):
+                    pygame.mouse.set_relative_mode(val)
+            else:
+                with self.assertWarns(DeprecationWarning):
+                    pygame.mouse.set_relative_mode(val)
+
+        pygame.display.set_mode((100, 100))
         pygame.mouse.set_visible(True)
         pygame.mouse.set_relative_mode(True)  # sets the mouse invisible
         visible = pygame.mouse.get_visible()
@@ -398,6 +407,7 @@ def test_set_relative_mode(self):
     )
     def test_get_relative_mode(self):
         """Tests that get_relative_mode correctly reports the relative mode"""
+        pygame.display.set_mode((100, 100))
         pygame.mouse.set_relative_mode(True)
         self.assertEqual(pygame.mouse.get_relative_mode(), True)
         pygame.mouse.set_relative_mode(False)