Android: default SDL_HINT_MOUSE_TOUCH_EVENTS to 1 as previous behaviour

WhatsNew.txt

@@ -8,7 +8,8 @@ This is a list of major changes in SDL's version history.
 
 Android:
 * Removed SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH (replaced by SDL_HINT_MOUSE_TOUCH_EVENTS and SDL_HINT_TOUCH_MOUSE_EVENTS)
-  (Changed old default behavior from hardware mouse triggering touch events to now not doing so (SDL_MOUSE_TOUCH_EVENTS=0) to match the default behavior of other platforms")
+  SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH=1, should be replaced by setting both previous hints to 0.
+  SDL_HINT_ANDROID_SEPARATE_MOUSE_AND_TOUCH=0, should be replaced by setting both previous hints to 1.
 
 
 ---------------------------------------------------------------------------

include/SDL_hints.h

@@ -323,6 +323,7 @@ extern "C" {
  *    "1"       - Mouse events will generate touch events
  *
  *  By default SDL will *not* generate touch events for mouse events
+ *  Except for Android, they are generated by default.
  */
 
 #define SDL_HINT_MOUSE_TOUCH_EVENTS    "SDL_MOUSE_TOUCH_EVENTS"

src/events/SDL_mouse.c

@@ -112,14 +112,22 @@ SDL_MouseTouchEventsChanged(void *userdata, const char *name, const char *oldVal
 {
     SDL_Mouse *mouse = (SDL_Mouse *)userdata;
 
-    if (hint && (*hint == '1' || SDL_strcasecmp(hint, "true") == 0)) {
-
-        SDL_AddTouch(SDL_MOUSE_TOUCHID, SDL_TOUCH_DEVICE_DIRECT, "mouse_input");
-
+    if (hint == NULL || *hint == '\0') {
+        /* Default */
+#if defined(__ANDROID__)
+        mouse->mouse_touch_events = SDL_TRUE;
+#else
+        mouse->mouse_touch_events = SDL_FALSE;
+#endif
+    } else if (*hint == '1' || SDL_strcasecmp(hint, "true") == 0) {
         mouse->mouse_touch_events = SDL_TRUE;
     } else {
         mouse->mouse_touch_events = SDL_FALSE;
     }
+
+    if (mouse->mouse_touch_events) {
+        SDL_AddTouch(SDL_MOUSE_TOUCHID, SDL_TOUCH_DEVICE_DIRECT, "mouse_input");
+    }
 }
 
 /* Public functions */