Holding down shift while moving the mouse's scrollwheel on MacOS X ma…

…kes the OS report these are "horizontal scrollwheel" events, which confuses gaming apps in several legitimate conditions. Now all scrollwheel events are made to look vertical when passed to the app. Patch by John Knottenbelt. http://www.libsdl.org/pipermail/sdl/2005-March/067978.html
libsdl-org · Apr 17, 2005 · 2b55f06 · 2b55f06
1 parent b439b7a
commit 2b55f06
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/video/quartz/SDL_QuartzEvents.m b/src/video/quartz/SDL_QuartzEvents.m
@@ -900,10 +900,11 @@ but not as a result of the warp (so it's in the right direction).
                     break;
                 case NSScrollWheel:
                     if ( isInGameWin ) {
-                        float dy;
+                        float dy, dx;
                         Uint8 button;
                         dy = [ event deltaY ];
-                        if ( dy > 0.0 ) /* Scroll up */
+                        dx = [ event deltaX ];
+                        if ( dy > 0.0 || dx > 0.0 ) /* Scroll up */
                             button = SDL_BUTTON_WHEELUP;
                         else /* Scroll down */
                             button = SDL_BUTTON_WHEELDOWN;