From ae2b92c2876e3c0c8c8266187ad0eb4ae29fe5a8 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Sat, 20 Mar 2021 12:47:37 +0300
Subject: First part of the new chat view keyboard avoiding

---
 Juick/ViewControllers/ChatViewController.h | 1 +
 Juick/ViewControllers/ChatViewController.m | 9 +++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

(limited to 'Juick/ViewControllers')

diff --git a/Juick/ViewControllers/ChatViewController.h b/Juick/ViewControllers/ChatViewController.h
index f21eb10..f23ecc8 100644
--- a/Juick/ViewControllers/ChatViewController.h
+++ b/Juick/ViewControllers/ChatViewController.h
@@ -14,6 +14,7 @@
 @property(nonatomic, strong) NSMutableArray *messages;
 @property(nonatomic, strong) NSString *uname;
 @property (weak, nonatomic) IBOutlet UIStackView *stack;
+@property (weak, nonatomic) IBOutlet NSLayoutConstraint *stackBottomConstraint;
 @property (strong, nonatomic) IBOutlet UITableView *tableView;
 
 -(void) reloadChat;
diff --git a/Juick/ViewControllers/ChatViewController.m b/Juick/ViewControllers/ChatViewController.m
index 9493155..cfecc48 100644
--- a/Juick/ViewControllers/ChatViewController.m
+++ b/Juick/ViewControllers/ChatViewController.m
@@ -11,6 +11,8 @@
 
 #import "MessageInputView.h"
 
+#define kMessageInputInitialHeight 50
+
 @interface ChatViewController ()
 
 @property (nonatomic, readwrite, retain) MessageInputView *accessoryView;
@@ -37,6 +39,8 @@
     [self addObserver:self forKeyPath:@"uname" options:0 context:nil];
 #if TARGET_OS_MACCATALYST
     [self.stack addArrangedSubview:[self inputAccessoryView]];
+#else
+    self.stackBottomConstraint.constant = kMessageInputInitialHeight;
 #endif
 }
 
@@ -102,11 +106,12 @@
     if (userInfo) {
         CGRect beginFrame = [userInfo [UIKeyboardFrameBeginUserInfoKey] CGRectValue];
         CGRect endFrame = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
-        CGFloat delta = endFrame.origin.y - beginFrame.origin.y;
+        CGFloat keyboardHeight = endFrame.origin.y - beginFrame.origin.y;
         CGFloat duration = [userInfo[UIKeyboardAnimationDurationUserInfoKey] floatValue];
         UIViewAnimationCurve animationCurve = [userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue];
+        
         [UIView animateWithDuration:duration delay:0 options:(animationCurve << 16) animations:^{
-            self.tableView.contentOffset = CGPointMake(0, self.tableView.contentOffset.y - delta);
+            self.tableView.contentOffset = CGPointMake(0, self.tableView.contentOffset.y - keyboardHeight);
         } completion:nil];
     }
 }
-- 
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