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feat: back gesture with full screen swipe #705
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troZee
merged 3 commits into
callstack:master
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intergalacticspacehighway:fix/full-swipe-back-gesture
Mar 24, 2023
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Original file line number | Diff line number | Diff line change |
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@@ -15,7 +15,10 @@ | |
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using namespace facebook::react; | ||
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@interface RNCPagerViewComponentView () <RCTRNCViewPagerViewProtocol, UIPageViewControllerDataSource, UIPageViewControllerDelegate, UIScrollViewDelegate> | ||
@interface RNCPagerViewComponentView () <RCTRNCViewPagerViewProtocol, UIPageViewControllerDataSource, UIPageViewControllerDelegate, UIScrollViewDelegate, UIGestureRecognizerDelegate> | ||
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@property(nonatomic, assign) UIPanGestureRecognizer* panGestureRecognizer; | ||
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@end | ||
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@implementation RNCPagerViewComponentView { | ||
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@@ -63,6 +66,11 @@ - (instancetype)initWithFrame:(CGRect)frame | |
_destinationIndex = -1; | ||
_layoutDirection = @"ltr"; | ||
_overdrag = NO; | ||
UIPanGestureRecognizer* panGestureRecognizer = [UIPanGestureRecognizer new]; | ||
self.panGestureRecognizer = panGestureRecognizer; | ||
panGestureRecognizer.delegate = self; | ||
[self addGestureRecognizer: panGestureRecognizer]; | ||
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} | ||
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return self; | ||
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@@ -398,6 +406,29 @@ + (ComponentDescriptorProvider)componentDescriptorProvider | |
} | ||
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- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer { | ||
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// Recognize simultaneously only if the other gesture is RN Screen's pan gesture (one that is used to perform fullScreenGestureEnabled) | ||
if (gestureRecognizer == self.panGestureRecognizer && [NSStringFromClass([otherGestureRecognizer class]) isEqual: @"RNSPanGestureRecognizer"]) { | ||
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UIPanGestureRecognizer* panGestureRecognizer = (UIPanGestureRecognizer*) gestureRecognizer; | ||
CGPoint velocity = [panGestureRecognizer velocityInView:self]; | ||
BOOL isLTR = [self isLtrLayout]; | ||
BOOL isBackGesture = (isLTR && velocity.x > 0) || (!isLTR && velocity.x < 0); | ||
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if (self.currentIndex == 0 && isBackGesture) { | ||
scrollView.panGestureRecognizer.enabled = false; | ||
} else { | ||
const auto &viewProps = *std::static_pointer_cast<const RNCViewPagerProps>(_props); | ||
scrollView.panGestureRecognizer.enabled = viewProps.scrollEnabled; | ||
} | ||
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return YES; | ||
} | ||
const auto &viewProps = *std::static_pointer_cast<const RNCViewPagerProps>(_props); | ||
scrollView.panGestureRecognizer.enabled = viewProps.scrollEnabled; | ||
return NO; | ||
} | ||
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@end | ||
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Class<RCTComponentViewProtocol> RNCViewPagerCls(void) | ||
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Upgrade is required as
fullScreenGestureEnabled
requires newRNScreen
version. Looks like it shouldn't break anything. https://reactnavigation.org/docs/upgrading-from-5.x/