Add an option to reverse the direction of the quick zoom gesture (maplibre#3587)

Author: petrjanda72

platform/ios/src/MLNMapView.h

@@ -768,6 +768,15 @@ MLN_EXPORT
  */
 @property (nonatomic, getter=isZoomEnabled) BOOL zoomEnabled;
 
+/**
+ A boolean value that reverses the direction of the quick zoom gesture.
+
+ When this property is set, the zoom-in and zoom-out behavior during the quick
+ zoom gesture (also called one-finger zoom) is reversed, aligning with the
+ behavior in Apple Maps. The default value is `NO`.
+ */
+@property (nonatomic, getter=isQuickZoomReversed) BOOL quickZoomReversed;
+
 /**
  A Boolean value that determines whether the user may scroll around the map,
  changing the center coordinate.

platform/ios/src/MLNMapView.mm

@@ -861,6 +861,7 @@ - (void)commonInitWithOptions:(MLNMapOptions*)mlnMapoptions
     _pinch.delegate = self;
     [self addGestureRecognizer:_pinch];
     _zoomEnabled = YES;
+    _quickZoomReversed = NO;
 
 #if TARGET_IPHONE_SIMULATOR & (TARGET_CPU_X86 | TARGET_CPU_X86_64)
     if (isM1Simulator) {
@@ -2667,6 +2668,8 @@ - (void)handleQuickZoomGesture:(UILongPressGestureRecognizer *)quickZoom
     {
         CGFloat distance = [quickZoom locationInView:quickZoom.view].y - self.quickZoomStart;
 
+        if (self.isQuickZoomReversed) distance = - distance;
+
         CGFloat newZoom = MAX(log2f(self.scale) + (distance / 75), *self.mbglMap.getBounds().minZoom);
 
         if ([self zoomLevel] == newZoom) return;
@@ -3183,6 +3186,12 @@ - (void)setZoomEnabled:(BOOL)zoomEnabled
     self.twoFingerTap.enabled = zoomEnabled;
 }
 
+- (void)setQuickZoomReversed:(BOOL)quickZoomReversed
+{
+    MLNLogDebug(@"Setting quickZoomReversed: %@", MLNStringFromBOOL(quickZoomReversed));
+    _quickZoomReversed = quickZoomReversed;
+}
+
 - (void)setScrollEnabled:(BOOL)scrollEnabled
 {
     MLNLogDebug(@"Setting scrollEnabled: %@", MLNStringFromBOOL(scrollEnabled));