react-native-navigation的迁移库

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  1. //
  2. // RNNSwizzles.m
  3. // ReactNativeNavigation
  4. //
  5. // Created by Leo Natan (Wix) on 1/17/18.
  6. // Copyright © 2018 Wix. All rights reserved.
  7. //
  8. #import "RNNSwizzles.h"
  9. @import ObjectiveC;
  10. @import UIKit;
  11. static id (*__SWZ_initWithEventDispatcher_orig)(id self, SEL _cmd, id eventDispatcher);
  12. static void (*__SWZ_setFrame_orig)(id self, SEL _cmd, CGRect frame);
  13. static void __RNN_setFrame_orig(UIScrollView* self, SEL _cmd, CGRect frame)
  14. {
  15. CGPoint originalOffset = self.contentOffset;
  16. __SWZ_setFrame_orig(self, _cmd, frame);
  17. UIEdgeInsets contentInset;
  18. if (@available(iOS 11.0, *)) {
  19. contentInset = self.adjustedContentInset;
  20. } else {
  21. contentInset = self.contentInset;
  22. }
  23. CGSize contentSize = self.contentSize;
  24. // If contentSize has not been measured yet we can't check bounds.
  25. if (CGSizeEqualToSize(contentSize, CGSizeZero))
  26. {
  27. self.contentOffset = originalOffset;
  28. }
  29. else
  30. {
  31. // Make sure offset don't exceed bounds. This could happen on screen rotation.
  32. CGSize boundsSize = self.bounds.size;
  33. self.contentOffset = CGPointMake(MAX(-contentInset.left, MIN(contentSize.width - boundsSize.width + contentInset.right, originalOffset.x)),
  34. MAX(-contentInset.top, MIN(contentSize.height - boundsSize.height + contentInset.bottom, originalOffset.y)));
  35. }
  36. }
  37. @implementation RNNSwizzles
  38. #if __IPHONE_OS_VERSION_MAX_ALLOWED > __IPHONE_10_3
  39. - (id)__swz_initWithEventDispatcher:(id)eventDispatcher
  40. {
  41. id returnValue = __SWZ_initWithEventDispatcher_orig(self, _cmd, eventDispatcher);
  42. if (@available(iOS 11.0, *)) {
  43. [(UIScrollView*)[returnValue valueForKey:@"scrollView"] setContentInsetAdjustmentBehavior:UIScrollViewContentInsetAdjustmentAlways];
  44. }
  45. return returnValue;
  46. }
  47. + (void)load
  48. {
  49. Class cls = NSClassFromString(@"RCTScrollView");
  50. if(cls == NULL)
  51. {
  52. return;
  53. }
  54. Method m1 = class_getInstanceMethod(cls, NSSelectorFromString(@"initWithEventDispatcher:"));
  55. if(m1 == NULL)
  56. {
  57. return;
  58. }
  59. __SWZ_initWithEventDispatcher_orig = (void*)method_getImplementation(m1);
  60. Method m2 = class_getInstanceMethod([RNNSwizzles class], NSSelectorFromString(@"__swz_initWithEventDispatcher:"));
  61. method_exchangeImplementations(m1, m2);
  62. if (@available(iOS 11.0, *)) {
  63. cls = NSClassFromString(@"RCTCustomScrollView");
  64. if(cls == NULL)
  65. {
  66. return;
  67. }
  68. m1 = class_getInstanceMethod(cls, @selector(setFrame:));
  69. __SWZ_setFrame_orig = (void*)method_getImplementation(m1);
  70. method_setImplementation(m1, (IMP)__RNN_setFrame_orig);
  71. }
  72. }
  73. #endif
  74. @end
  75. #if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 110000 /* __IPHONE_11_0 */
  76. @interface UIView (OS10SafeAreaSupport) @end
  77. @implementation UIView (OS10SafeAreaSupport)
  78. - (UIEdgeInsets)_ln_safeAreaInsets
  79. {
  80. static NSString* const b64 = @"X3ZpZXdDb250cm9sbGVyRm9yQW5jZXN0b3I=";
  81. UIViewController* vc = [self valueForKey:[[NSString alloc] initWithData:[[NSData alloc] initWithBase64EncodedString:b64 options:0] encoding:NSUTF8StringEncoding]];
  82. if(vc == nil)
  83. {
  84. return UIEdgeInsetsZero;
  85. }
  86. CGRect myFrameInVCView = [vc.view convertRect:self.bounds fromView:self];
  87. UIEdgeInsets rv = UIEdgeInsetsZero;
  88. rv.top = CGRectIntersection(myFrameInVCView, CGRectMake(0, 0, vc.view.bounds.size.width, vc.topLayoutGuide.length)).size.height;
  89. rv.bottom = CGRectIntersection(myFrameInVCView, CGRectMake(0, vc.view.bounds.size.height - vc.bottomLayoutGuide.length, vc.view.bounds.size.width, vc.bottomLayoutGuide.length)).size.height;
  90. return rv;
  91. }
  92. - (void)_ln_triggerSafeAreaInsetsDidChange
  93. {
  94. if([self respondsToSelector:@selector(safeAreaInsetsDidChange)])
  95. {
  96. [self performSelector:@selector(safeAreaInsetsDidChange)];
  97. }
  98. }
  99. - (void)_ln_layoutSubviews
  100. {
  101. [self _ln_triggerSafeAreaInsetsDidChange];
  102. struct objc_super super = {.receiver = self, .super_class = class_getSuperclass(object_getClass(self))};
  103. void (*super_class)(struct objc_super*, SEL) = (void*)objc_msgSendSuper;
  104. super_class(&super, _cmd);
  105. }
  106. - (void)_ln_setFrame:(CGRect)frame
  107. {
  108. [self _ln_triggerSafeAreaInsetsDidChange];
  109. struct objc_super super = {.receiver = self, .super_class = class_getSuperclass(object_getClass(self))};
  110. void (*super_class)(struct objc_super*, SEL, CGRect) = (void*)objc_msgSendSuper;
  111. super_class(&super, _cmd, frame);
  112. }
  113. - (void)_ln_setCenter:(CGPoint)center
  114. {
  115. [self _ln_triggerSafeAreaInsetsDidChange];
  116. struct objc_super super = {.receiver = self, .super_class = class_getSuperclass(object_getClass(self))};
  117. void (*super_class)(struct objc_super*, SEL, CGPoint) = (void*)objc_msgSendSuper;
  118. super_class(&super, _cmd, center);
  119. }
  120. - (void)_ln_setBounds:(CGRect)bounds
  121. {
  122. [self _ln_triggerSafeAreaInsetsDidChange];
  123. struct objc_super super = {.receiver = self, .super_class = class_getSuperclass(object_getClass(self))};
  124. void (*super_class)(struct objc_super*, SEL, CGRect) = (void*)objc_msgSendSuper;
  125. super_class(&super, _cmd, bounds);
  126. }
  127. + (void)load
  128. {
  129. static dispatch_once_t onceToken;
  130. dispatch_once(&onceToken, ^{
  131. if(NSProcessInfo.processInfo.operatingSystemVersion.majorVersion < 11)
  132. {
  133. Class cls = NSClassFromString(@"RCTSafeAreaView");
  134. if(cls == NULL)
  135. {
  136. return;
  137. }
  138. Method m = class_getInstanceMethod([UIView class], @selector(_ln_safeAreaInsets));
  139. if(NO == class_addMethod(cls, @selector(safeAreaInsets), method_getImplementation(m), method_getTypeEncoding(m)))
  140. {
  141. return;
  142. }
  143. m = class_getInstanceMethod([UIView class], @selector(_ln_layoutSubviews));
  144. if(NO == class_addMethod(cls, @selector(layoutSubviews), method_getImplementation(m), method_getTypeEncoding(m)))
  145. {
  146. return;
  147. }
  148. m = class_getInstanceMethod([UIView class], @selector(_ln_setFrame:));
  149. if(NO == class_addMethod(cls, @selector(setFrame:), method_getImplementation(m), method_getTypeEncoding(m)))
  150. {
  151. return;
  152. }
  153. m = class_getInstanceMethod([UIView class], @selector(_ln_setCenter:));
  154. if(NO == class_addMethod(cls, @selector(setCenter:), method_getImplementation(m), method_getTypeEncoding(m)))
  155. {
  156. return;
  157. }
  158. m = class_getInstanceMethod([UIView class], @selector(_ln_setBounds:));
  159. if(NO == class_addMethod(cls, @selector(setBounds:), method_getImplementation(m), method_getTypeEncoding(m)))
  160. {
  161. return;
  162. }
  163. }
  164. });
  165. }
  166. @end
  167. #endif