View source for Disabling NC, CC and Home gestures

In iOS 9-11, we have the class <code>SBSystemGestureManager</code> which helps a great deal. It has a method <code>_isGestureWithTypeAllowed:</code> which is called early in the gestures and can be used to see which ones are being invoked.

    %hook SBSystemGestureManager
    
    -(BOOL)_isGestureWithTypeAllowed:(NSUInteger)type {
        NSLog(@"_isGestureWithTypeAllowed [%u]", type);
    
        // iOS 11 - Normal device (11.0.3)
        // ===============================================================
        // 1 = Notification center
        // 2 = Control center OR Home gesture? 
        //     This method is called twice, first with '2' then with '6'. I 
        //     am currently assuming that this '2' is related to home gesture
        //     and the '6' is the proper control center. Only using '2' did
        //     not prevent the CC showing up, which is why I use '6' instead.
        // 6 = Control center 2 - This method is called twice, second with '2'
        
        // iOS 11 - iPhone X (testing with 'fake iPhoneX' tweak 'LittleX')
        //          only on an iPhone SE (11.0.3)
        // ===============================================================
        // 1 = A) Notification center (swipe down on left side of 'notch')
        //     B) Control center (swipe down on right side of 'notch')
        // 2 = From bottom, after '20'
        // 6 = Control center - This method is called after '1' when swiping
        //     on the right side of the notch.
        // 20 = Home gesture AND Horizontal left/right swipe on the new 
        //      grabber to switch between apps easily
        //
        // Note: With LittleX neither '1 B' nor '6' works, however since
        //       the CC still comes up from the bottom, since it's not a
        //       real iPhone X, I think this might be a bug so I will ignore
        //       it for now and hope it works on real X devices.
        
        // iOS 10 (Tested on 10.2 only)
        // ===============================================================
        // 1 = Notification center
        // 3 = Control center
        
        // iOS 9 - iPhone (9.0.2)
        // ===============================================================
        // 1 = Notification center
        // 3 = Control center
        
        // iOS 9 - iPad (9.3.3)
        // ===============================================================
        // 1 = Notification center
        // 3 = Control center
        // 6 = Related to the 4/5 finger swipe to change apps I think.
        // 7 = Pre-Notification center + Pre-Control center + 4 finger touch?
        //     7 is both called before the NC and the CC. In the case of the CC, the 
        //     order this method is called in is 7-7-3. Still not sure what the '7' is.
        //     This is also appearing a lot when we do 4 finger touch to fast-switch apps.
        //     A possibility is that this is just "any touch". Since it appears multiple 
        //     times when doing the 4/5 finger swipe (see '6'). But who knows.
        // 8 = Pre-Notification center
        //     When swiping from the top area in iOS 9 (maybe others) this method is
        //     called 3 times before finally calling the '1' (NC). In this order:
        //     7-7-8-1. I am not sure what they are, but to prevent the NC from 
        //     appearing we can simply just look for the '1' which is more or less
        //     confirmed to be the NC.
        
        // iOS 8 and below
        // ===============================================================
        // This class does not exist in iOS 8 and below.
        // TODO: Make sure iOS 6, 7 and 8 also can prevent CC/NC
        
        if (type == 1 || type == 6 || type == 3 || type == 20) {
                return NO;
        }
        
        return %orig();
    }
    
    %end

Here are some enums that the numbers actually mean. 

    SBSystemGestureTypeNone = 0,
    SBSystemGestureTypeShowNotificationCenter,
    SBSystemGestureTypeDismissBanner,
    SBSystemGestureTypeShowControlCenter,
    SBSystemGestureTypeSuspendApp,
    SBSystemGestureTypeSwitcherSlideUp,
    SBSystemGestureTypeSwitchApp,
    SBSystemGestureTypeSceneResize,
    SBSystemGestureTypeSideAppReveal,
    SBSystemGestureTypeSideAppGrabberReveal,
    SBSystemGestureTypeSideAppOverlayDismiss,
    SBSystemGestureTypeSideSwitcherReveal,
    SBSystemGestureTypeSideSwitcherGrabberPress,
    SBSystemGestureTypeSwitcherForcePress,
    SBSystemGestureTypeDismissCarPlayBanner

Quote regarding iOS 7/8

    "and for iOS 7/8 this stuff lived in SBUIController https://github.com/thomasfinch/iOS-7-SpringBoard-Headers/blob/master/SBUIController.h#L166 (edited)" 


Again for iOS 7/8 you could use the below one as well. If you don't use the one from the GitHub link.

Someone should confirm this, but it is what I use in 'Snapper 2' and it didn't show the CC NC so..

    %hook SBUIController
    
    // I guess this one prevents the CC and NC from appearing in iOS 8? (and 7?)
    // But for above, we need to do the (see below)
    - (BOOL)shouldSendTouchesToSystemGestures {
            return NO;
    }
    
    %end

Alternative ways to prevent the Home gesture in iOS 11 on iPhone X are

    //
    // Disables the 'Home Gesture' on iPhone X (starting at iOS 11)
    // NOTE: If we have issues with the horizontal iPhone X app switching gesture
    // maybe look into "_handleDeckSwitcherPanGesture:" in "SBFluidSwitcherGestureManager"
    // which the -[SBGrabber shouldBeginTouch] (?) needs to be off from.
    //
    %hook SBHomeGestureSettings
    
    - (BOOL)isHomeGestureEnabled {
         return NO;
    }
    
    %end 

And
    
    %hook SBFluidSwitcherGestureManager
    
    - (BOOL)_shouldBeginBottomEdgePanGesture:(id)arg1 {
        return NO;
    }
    
    %end