initial commit taken from gitlab.lrz.de

node_modules/react-native/React/UIUtils/RCTUIUtils.h

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+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import <CoreGraphics/CoreGraphics.h>
+#import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Get window and screen dimensions
+typedef struct {
+  struct {
+    CGFloat width, height, scale, fontScale;
+  } window, screen;
+} RCTDimensions;
+extern __attribute__((visibility("default")))
+RCTDimensions RCTGetDimensions(CGFloat fontScale);
+
+// Get font size multiplier for font base size (Large) by content size category
+extern __attribute__((visibility("default")))
+CGFloat RCTGetMultiplierForContentSizeCategory(UIContentSizeCategory category);
+
+#ifdef __cplusplus
+}
+#endif
+
+NS_ASSUME_NONNULL_END

node_modules/react-native/React/UIUtils/RCTUIUtils.m

@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+#import "RCTUIUtils.h"
+
+RCTDimensions RCTGetDimensions(CGFloat fontScale)
+{
+  UIScreen *mainScreen = UIScreen.mainScreen;
+  CGSize screenSize = mainScreen.bounds.size;
+  RCTDimensions result;
+  typeof (result.window) dims = {
+    .width = screenSize.width,
+    .height = screenSize.height,
+    .scale = mainScreen.scale,
+    .fontScale = fontScale
+  };
+  result.window = dims;
+  result.screen = dims;
+
+  return result;
+}
+
+CGFloat RCTGetMultiplierForContentSizeCategory(UIContentSizeCategory category)
+{
+  static NSDictionary<NSString *, NSNumber *> *multipliers = nil;
+  static dispatch_once_t token;
+  dispatch_once(&token, ^{
+    multipliers = @{
+        UIContentSizeCategoryExtraSmall: @0.823,
+        UIContentSizeCategorySmall: @0.882,
+        UIContentSizeCategoryMedium: @0.941,
+        UIContentSizeCategoryLarge: @1.0,
+        UIContentSizeCategoryExtraLarge: @1.118,
+        UIContentSizeCategoryExtraExtraLarge: @1.235,
+        UIContentSizeCategoryExtraExtraExtraLarge: @1.353,
+        UIContentSizeCategoryAccessibilityMedium: @1.786,
+        UIContentSizeCategoryAccessibilityLarge: @2.143,
+        UIContentSizeCategoryAccessibilityExtraLarge: @2.643,
+        UIContentSizeCategoryAccessibilityExtraExtraLarge: @3.143,
+        UIContentSizeCategoryAccessibilityExtraExtraExtraLarge: @3.571
+    };
+  });
+
+  double value = multipliers[category].doubleValue;
+  return value > 0.0 ? value : 1.0;
+}