x11: Use XC_top_left_corner/XC_top_right_corner instead of XC_fleur. On Gnome (and hopefully others!), this produces something that actually matches SDL_SYSTEM_CURSOR_SIZENWSE/SDL_SYSTEM_CURSOR_SIZENESW. On other desktop enviroments, it probably fits the spirit better than XC_fleur in any case. Reference Issue #2123.
diff --git a/src/video/x11/SDL_x11mouse.c b/src/video/x11/SDL_x11mouse.c
index 4d741ac..5803a39 100644
--- a/src/video/x11/SDL_x11mouse.c
+++ b/src/video/x11/SDL_x11mouse.c
@@ -244,8 +244,8 @@ X11_CreateSystemCursor(SDL_SystemCursor id)
case SDL_SYSTEM_CURSOR_WAIT: shape = XC_watch; break;
case SDL_SYSTEM_CURSOR_CROSSHAIR: shape = XC_tcross; break;
case SDL_SYSTEM_CURSOR_WAITARROW: shape = XC_watch; break;
- case SDL_SYSTEM_CURSOR_SIZENWSE: shape = XC_fleur; break;
- case SDL_SYSTEM_CURSOR_SIZENESW: shape = XC_fleur; break;
+ case SDL_SYSTEM_CURSOR_SIZENWSE: shape = XC_top_left_corner; break;
+ case SDL_SYSTEM_CURSOR_SIZENESW: shape = XC_top_right_corner; break;
case SDL_SYSTEM_CURSOR_SIZEWE: shape = XC_sb_h_double_arrow; break;
case SDL_SYSTEM_CURSOR_SIZENS: shape = XC_sb_v_double_arrow; break;
case SDL_SYSTEM_CURSOR_SIZEALL: shape = XC_fleur; break;