From e1885853ac46f4e84af9e4a50203d50b773f1a27 Mon Sep 17 00:00:00 2001
From: Soumyajit Behera <ashish454570@gmail.com>
Date: Wed, 22 Mar 2023 05:32:09 -0700
Subject: [PATCH] reduce cursor size for multiline(TextInput) (#36484)

Summary:
Currently in multiline input the cursor touches the previous line.
So this reduces its height sets its position so that I does not touch previous line.
This PR will also fix the issue https://github.com/facebook/react-native/issues/28012 (Problem with TextInput lineHeight on iOS)
## Changelog

[IOS] [ADDED] - Fixed cursor height on multiline text input
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Pull Request resolved: https://github.com/facebook/react-native/pull/36484

Test Plan:
UI Before the change
<img width="379" alt="Screenshot 2023-03-15 at 10 16 07 PM" src="https://user-images.githubusercontent.com/46092576/225380938-23b9b8a4-4b8a-45e1-bbf1-4af8ac8d9183.png">

UI After the change
<img width="509" alt="Screenshot 2023-03-14 at 1 57 27 AM" src="https://user-images.githubusercontent.com/46092576/225380930-77ca853c-fae5-4bfa-82cf-03b2e22bf8da.png">

Reviewed By: dmytrorykun

Differential Revision: D44130814

Pulled By: javache

fbshipit-source-id: 09d53ecee6812e9a875dc5364bd91b76cc2bc1f5
---
 .../Libraries/Text/TextInput/Multiline/RCTUITextView.m      | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/react-native/Libraries/Text/TextInput/Multiline/RCTUITextView.m b/packages/react-native/Libraries/Text/TextInput/Multiline/RCTUITextView.m
index 5d5d3085879ba2..21cadf2c89f770 100644
--- a/packages/react-native/Libraries/Text/TextInput/Multiline/RCTUITextView.m
+++ b/packages/react-native/Libraries/Text/TextInput/Multiline/RCTUITextView.m
@@ -298,7 +298,11 @@ - (CGRect)caretRectForPosition:(UITextPosition *)position
     return CGRectZero;
   }
 
-  return [super caretRectForPosition:position];
+  CGRect rect = [super caretRectForPosition:position];
+  UIFont *font = self.font;
+  rect.size.height = font.pointSize - font.descender;
+  rect.origin.y -= font.descender;
+  return rect;
 }
 
 #pragma mark - Utility Methods