NDOF: compile 3D mouse code only if WITH_INPUT_NDOF

When WITH_INPUT_NDOF is disabled, 3D mouse handling code is removed
from:

- GHOST (was mostly done, finished the job)
- window manager
- various editors
- RNA
- keymaps

The input tab of user prefs does not show 3D mouse settings. Key map
editor does not show NDOF mappings.

DNA does not change.

On my Mac the compiled binary is 42KB smaller after this change. It
runs fine WITH_INPUT_NDOF on or off.

7 files changed, 42 insertions, 7 deletions

diff --git a/source/blender/windowmanager/CMakeLists.txt b/source/blender/windowmanager/CMakeLists.txt
index 01188cb7f65..b6245a8c0d1 100644
--- a/source/blender/windowmanager/CMakeLists.txt
+++ b/source/blender/windowmanager/CMakeLists.txt
@@ -146,6 +146,10 @@ if(WITH_OPENSUBDIV)
 	add_definitions(-DWITH_OPENSUBDIV)
 endif()
 
+if(WITH_INPUT_NDOF)
+	add_definitions(-DWITH_INPUT_NDOF)
+endif()
+
 if(WIN32)
 	if(WITH_INPUT_IME)
 		add_definitions(-DWITH_INPUT_IME)
diff --git a/source/blender/windowmanager/WM_api.h b/source/blender/windowmanager/WM_api.h
index 69905fc296b..2b82f1becb3 100644
--- a/source/blender/windowmanager/WM_api.h
+++ b/source/blender/windowmanager/WM_api.h
@@ -64,7 +64,10 @@ struct wmDrag;
 struct ImBuf;
 struct ImageFormatData;
 struct ARegion;
+
+#ifdef WITH_INPUT_NDOF
 struct wmNDOFMotionData;
+#endif
 
 typedef struct wmJob wmJob;
 
@@ -186,9 +189,10 @@ void		WM_event_add_mousemove(struct bContext *C);
 bool        WM_modal_tweak_exit(const struct wmEvent *event, int tweak_event);
 bool		WM_event_is_absolute(const struct wmEvent *event);
 
+#ifdef WITH_INPUT_NDOF
 			/* 3D mouse */
 void		WM_ndof_deadzone_set(float deadzone);
-
+#endif
 			/* notifiers */
 void		WM_event_add_notifier(const struct bContext *C, unsigned int type, void *reference);
 void		WM_main_add_notifier(unsigned int type, void *reference);
@@ -498,11 +502,13 @@ bool write_crash_blend(void);
 			/* Lock the interface for any communication */
 void        WM_set_locked_interface(struct wmWindowManager *wm, bool lock);
 
+#ifdef WITH_INPUT_NDOF
 void        WM_event_ndof_pan_get(const struct wmNDOFMotionData *ndof, float r_pan[3], const bool use_zoom);
 void        WM_event_ndof_rotate_get(const struct wmNDOFMotionData *ndof, float r_rot[3]);
 
 float       WM_event_ndof_to_axis_angle(const struct wmNDOFMotionData *ndof, float axis[3]);
 void        WM_event_ndof_to_quat(const struct wmNDOFMotionData *ndof, float q[4]);
+#endif /* WITH_INPUT_NDOF */
 
 float       WM_event_tablet_data(const struct wmEvent *event, int *pen_flip, float tilt[2]);
 bool        WM_event_is_tablet(const struct wmEvent *event);
diff --git a/source/blender/windowmanager/WM_types.h b/source/blender/windowmanager/WM_types.h
index 3c0e99bddd0..0fe3e8a0fcf 100644
--- a/source/blender/windowmanager/WM_types.h
+++ b/source/blender/windowmanager/WM_types.h
@@ -485,6 +485,7 @@ typedef enum {  /* motion progress, for modal handlers */
 	P_FINISHED
 } wmProgress;
 
+#ifdef WITH_INPUT_NDOF
 typedef struct wmNDOFMotionData {
 	/* awfully similar to GHOST_TEventNDOFMotionData... */
 	/* Each component normally ranges from -1 to +1, but can exceed that.
@@ -496,6 +497,7 @@ typedef struct wmNDOFMotionData {
 	float dt; /* time since previous NDOF Motion event */
 	wmProgress progress; /* is this the first event, the last, or one of many in between? */
 } wmNDOFMotionData;
+#endif /* WITH_INPUT_NDOF */
 
 typedef struct wmTimer {
 	struct wmTimer *next, *prev;
diff --git a/source/blender/windowmanager/intern/wm_event_system.c b/source/blender/windowmanager/intern/wm_event_system.c
index 01dc77127d2..77d74399769 100644
--- a/source/blender/windowmanager/intern/wm_event_system.c
+++ b/source/blender/windowmanager/intern/wm_event_system.c
@@ -567,6 +567,7 @@ void WM_event_print(const wmEvent *event)
 		       BLI_str_utf8_size(event->utf8_buf), event->utf8_buf,
 		       event->keymap_idname, (const void *)event);
 
+#ifdef WITH_INPUT_NDOF
 		if (ISNDOF(event->type)) {
 			const wmNDOFMotionData *ndof = event->customdata;
 			if (event->type == NDOF_MOTION) {
@@ -577,6 +578,7 @@ void WM_event_print(const wmEvent *event)
 				/* ndof buttons printed already */
 			}
 		}
+#endif /* WITH_INPUT_NDOF */
 
 		if (event->tablet_data) {
 			const wmTabletData *wmtab = event->tablet_data;
@@ -613,10 +615,12 @@ bool WM_event_is_absolute(const wmEvent *event)
 	return (event->tablet_data != NULL);
 }
 
+#ifdef WITH_INPUT_NDOF
 void WM_ndof_deadzone_set(float deadzone)
 {
 	GHOST_setNDOFDeadZone(deadzone);
 }
+#endif
 
 static void wm_add_reports(ReportList *reports)
 {
@@ -2423,9 +2427,11 @@ void wm_event_do_handlers(bContext *C)
 					/* for regions having custom cursors */
 					wm_paintcursor_test(C, event);
 				}
+#ifdef WITH_INPUT_NDOF
 				else if (event->type == NDOF_MOTION) {
 					win->addmousemove = true;
 				}
+#endif
 
 				for (sa = win->screen->areabase.first; sa; sa = sa->next) {
 					/* after restoring a screen from SCREENMAXIMIZED we have to wait
@@ -3026,6 +3032,7 @@ static void update_tablet_data(wmWindow *win, wmEvent *event)
 	}
 }
 
+#ifdef WITH_INPUT_NDOF
 /* adds customdata to event */
 static void attach_ndof_data(wmEvent *event, const GHOST_TEventNDOFMotionData *ghost)
 {
@@ -3052,6 +3059,7 @@ static void attach_ndof_data(wmEvent *event, const GHOST_TEventNDOFMotionData *g
 	event->customdata = data;
 	event->customdatafree = 1;
 }
+#endif /* WITH_INPUT_NDOF */
 
 /* imperfect but probably usable... draw/enable drags to other windows */
 static wmWindow *wm_event_cursor_other_windows(wmWindowManager *wm, wmWindow *win, wmEvent *event)
@@ -3439,6 +3447,7 @@ void wm_event_add_ghostevent(wmWindowManager *wm, wmWindow *win, int type, int U
 			break;
 		}
 
+#ifdef WITH_INPUT_NDOF
 		case GHOST_kEventNDOFMotion:
 		{
 			event.type = NDOF_MOTION;
@@ -3474,6 +3483,7 @@ void wm_event_add_ghostevent(wmWindowManager *wm, wmWindow *win, int type, int U
 
 			break;
 		}
+#endif /* WITH_INPUT_NDOF */
 
 		case GHOST_kEventUnknown:
 		case GHOST_kNumEventTypes:
@@ -3545,6 +3555,7 @@ void WM_set_locked_interface(wmWindowManager *wm, bool lock)
 }
 
 
+#ifdef WITH_INPUT_NDOF
 /* -------------------------------------------------------------------- */
 /* NDOF */
 
@@ -3587,6 +3598,7 @@ void WM_event_ndof_to_quat(const struct wmNDOFMotionData *ndof, float q[4])
 	angle = WM_event_ndof_to_axis_angle(ndof, axis);
 	axis_angle_to_quat(q, axis, angle);
 }
+#endif /* WITH_INPUT_NDOF */
 
 /* if this is a tablet event, return tablet pressure and set *pen_flip
  * to 1 if the eraser tool is being used, 0 otherwise */
diff --git a/source/blender/windowmanager/intern/wm_init_exit.c b/source/blender/windowmanager/intern/wm_init_exit.c
index 3022d865460..73622cda483 100644
--- a/source/blender/windowmanager/intern/wm_init_exit.c
+++ b/source/blender/windowmanager/intern/wm_init_exit.c
@@ -198,8 +198,11 @@ void WM_init(bContext *C, int argc, const char **argv)
 	BLT_lang_set(NULL);
 
 	if (!G.background) {
+
+#ifdef WITH_INPUT_NDOF
 		/* sets 3D mouse deadzone */
 		WM_ndof_deadzone_set(U.ndof_deadzone);
+#endif
 
 		GPU_init();
 
diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index 78273615602..fcdab746d57 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -4348,7 +4348,6 @@ void wm_window_keymap(wmKeyConfig *keyconf)
 {
 	wmKeyMap *keymap = WM_keymap_find(keyconf, "Window", 0, 0);
 	wmKeyMapItem *kmi;
-	const char *data_path;
 	
 	/* note, this doesn't replace existing keymap items */
 	WM_keymap_verify_item(keymap, "WM_OT_window_duplicate", WKEY, KM_PRESS, KM_CTRL | KM_ALT, 0);
@@ -4386,7 +4385,9 @@ void wm_window_keymap(wmKeyConfig *keyconf)
 
 	/* menus that can be accessed anywhere in blender */
 	WM_keymap_verify_item(keymap, "WM_OT_search_menu", SPACEKEY, KM_PRESS, 0, 0);
+#ifdef WITH_INPUT_NDOF
 	WM_keymap_add_menu(keymap, "USERPREF_MT_ndof_settings", NDOF_BUTTON_MENU, KM_PRESS, 0, 0);
+#endif
 
 	/* Space switching */
 	kmi = WM_keymap_add_item(keymap, "WM_OT_context_set_enum", F2KEY, KM_PRESS, KM_SHIFT, 0); /* new in 2.5x, was DXF export */
@@ -4433,8 +4434,9 @@ void wm_window_keymap(wmKeyConfig *keyconf)
 	RNA_string_set(kmi->ptr, "data_path", "area.type");
 	RNA_string_set(kmi->ptr, "value", "DOPESHEET_EDITOR");
 	
+#ifdef WITH_INPUT_NDOF
 	/* ndof speed */
-	data_path = "user_preferences.inputs.ndof_sensitivity";
+	const char *data_path = "user_preferences.inputs.ndof_sensitivity";
 	kmi = WM_keymap_add_item(keymap, "WM_OT_context_scale_float", NDOF_BUTTON_PLUS, KM_PRESS, 0, 0);
 	RNA_string_set(kmi->ptr, "data_path", data_path);
 	RNA_float_set(kmi->ptr, "value", 1.1f);
@@ -4450,9 +4452,7 @@ void wm_window_keymap(wmKeyConfig *keyconf)
 	kmi = WM_keymap_add_item(keymap, "WM_OT_context_scale_float", NDOF_BUTTON_MINUS, KM_PRESS, KM_SHIFT, 0);
 	RNA_string_set(kmi->ptr, "data_path", data_path);
 	RNA_float_set(kmi->ptr, "value", 1.0f / 1.5f);
-	data_path = NULL;
-	(void)data_path;
-
+#endif /* WITH_INPUT_NDOF */
 
 	gesture_circle_modal_keymap(keyconf);
 	gesture_border_modal_keymap(keyconf);
diff --git a/source/blender/windowmanager/wm_event_types.h b/source/blender/windowmanager/wm_event_types.h
index 3085f138846..0936b294d1b 100644
--- a/source/blender/windowmanager/wm_event_types.h
+++ b/source/blender/windowmanager/wm_event_types.h
@@ -40,7 +40,9 @@ enum {
 	EVT_DATA_GESTURE     = 1,
 	EVT_DATA_TIMER       = 2,
 	EVT_DATA_DRAGDROP    = 3,
+#ifdef WITH_INPUT_NDOF
 	EVT_DATA_NDOF_MOTION = 4,
+#endif
 };
 
 /* tablet active, matches GHOST_TTabletMode */
@@ -236,6 +238,7 @@ enum {
 
 	/* *** End of keyboard codes. *** */
 
+#ifdef WITH_INPUT_NDOF
 	/* NDOF (from SpaceNavigator & friends)
 	 * These should be kept in sync with GHOST_NDOFManager.h
 	 * Ordering matters, exact values do not. */
@@ -290,6 +293,7 @@ enum {
 	NDOF_BUTTON_C,
 	/* the end */
 	NDOF_LAST,
+#endif /* WITH_INPUT_NDOF */
 
 	/* ********** End of Input devices. ********** */
 
@@ -369,8 +373,12 @@ enum {
 /* test whether the event is tweak event */
 #define ISTWEAK(event_type)  ((event_type) >= EVT_TWEAK_L && (event_type) <= EVT_GESTURE)
 
+#ifdef WITH_INPUT_NDOF
 /* test whether the event is a NDOF event */
-#define ISNDOF(event_type)  ((event_type) >= NDOF_MOTION && (event_type) < NDOF_LAST)
+#  define ISNDOF(event_type)  ((event_type) >= NDOF_MOTION && (event_type) < NDOF_LAST)
+#else
+#  define ISNDOF(event_type)  false
+#endif
 
 /* test whether event type is acceptable as hotkey, excluding modifiers */
 #define ISHOTKEY(event_type)                                                  \