fix view lift not working on first keyboard invoke.

Limelight/Input/CustomTapGestureRecognizer.h

@@ -15,7 +15,7 @@
 
 @property (nonatomic, assign) uint8_t numberOfTouchesRequired;
 @property (nonatomic, assign) double tapDownTimeThreshold;
-@property (nonatomic, readonly) CGFloat lowestTouchPointHeight;
+@property (atomic, readonly) CGFloat lowestTouchPointHeight;
 
 
 @end

Limelight/Input/CustomTapGestureRecognizer.m

@@ -32,14 +32,12 @@ static CGFloat lowestTouchPointYCoord = 0.0;
         for(UITouch *touch in [event allTouches]){
             if(lowestTouchPointYCoord < [touch locationInView:self.view].y) lowestTouchPointYCoord = [touch locationInView:self.view].y;
         }
-        //NSLog(@"lowestTouchPointYCoord: %f ", lowestTouchPointYCoord);
         _lowestTouchPointHeight = screenHeightInPoints - lowestTouchPointYCoord;
         self.state = UIGestureRecognizerStatePossible;
     }
 }
 
 - (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
-    
     // [super touchesEnded:touches withEvent:event];
     if(multiFingerDown && [[event allTouches] count] == [touches count]){
         multiFingerDown = false;
@@ -50,4 +48,10 @@ static CGFloat lowestTouchPointYCoord = 0.0;
     }
 }
 
++ (CGFloat)lowestTouchPointHeight{
+    @synchronized (self){
+        return self.lowestTouchPointHeight;
+    }
+}
+
 @end

Limelight/Input/StreamView.m

@@ -51,7 +51,7 @@ static const double X1_MOUSE_SPEED_DIVISOR = 2.5;
     
     NSDictionary<NSString *, NSNumber *> *dictCodes;
     CustomTapGestureRecognizer *keyboardToggleRecognizer;
-    CGFloat liftViewToHeight;
+    CGFloat HeightViewLiftedTo;
 }
 
 - (void) setupStreamView:(ControllerSupport*)controllerSupport
@@ -156,34 +156,32 @@ static const double X1_MOUSE_SPEED_DIVISOR = 2.5;
     [self becomeFirstResponder];
 }
 
-
 - (void)keyboardWillShow:(NSNotification *)notification{
     if(settings.liftStreamViewForKeyboard && !isInputingText){
         NSDictionary *userInfo = notification.userInfo;
         // Get the keyboard size from the notification
         CGRect keyboardFrame = [userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
-        liftViewToHeight = keyboardFrame.size.height - keyboardToggleRecognizer.lowestTouchPointHeight + CGRectGetHeight([[UIScreen mainScreen] bounds]) * 0.1; // lift the StreamView to the height of lowest touch point of multi-finger tap gesture, while reserving the view of 1/10 screen height for remote typing.
-        if(liftViewToHeight < 0) liftViewToHeight = 0;  // set liftViewtoHeight to 0 if it is high enough and not going to be covered by keyboard.
+        // NSLog(@"keyboard height %f, lowest point height %f", keyboardFrame.size.height, keyboardToggleRecognizer.lowestTouchPointHeight);
+        if(keyboardFrame.size.height < CGRectGetHeight([[UIScreen mainScreen] bounds]) * 0.25) return; // return in case of abnormal keyboard height
+        HeightViewLiftedTo = keyboardFrame.size.height - keyboardToggleRecognizer.lowestTouchPointHeight + CGRectGetHeight([[UIScreen mainScreen] bounds]) * 0.1; // lift the StreamView to the height of lowest touch point of multi-finger tap gesture, while reserving the view of 1/10 screen height for remote typing.
+        if(HeightViewLiftedTo < 0) HeightViewLiftedTo = 0;  // set HeightViewLiftedTo to 0 if it is high enough and not going to be covered by keyboard.
         CGRect liftedStreamFrame = self.frame;
-        liftedStreamFrame.origin.y -= liftViewToHeight;
+        liftedStreamFrame.origin.y -= HeightViewLiftedTo;
         self.frame = liftedStreamFrame;
-    }
-
-    
         isInputingText = true;
+    }
     // NSLog(@"keyboard will show");
 }
 
 - (void)keyboardWillHide:(NSNotification *)notification{
     
-    if(settings.liftStreamViewForKeyboard && isInputingText){
+    if(isInputingText){
         CGRect liftedStreamFrame = self.frame;
         // recover view position in keyboard hiding.
-        liftedStreamFrame.origin.y += liftViewToHeight;
+        liftedStreamFrame.origin.y += HeightViewLiftedTo;
         self.frame = liftedStreamFrame;
-    }
-    
         isInputingText = false;
+    }
     // NSLog(@"keyboard will hide");
 }
 
@@ -191,12 +189,8 @@ static const double X1_MOUSE_SPEED_DIVISOR = 2.5;
 - (void)toggleKeyboard{
     if (isInputingText) {
         Log(LOG_D, @"Closing the keyboard");
-        // NSLog(@"Closing the keyboard");
         [keyInputField resignFirstResponder];
-        isInputingText = false;
     } else {
-
-        // NSLog(@"Opening the keyboard");
         Log(LOG_D, @"Opening the keyboard");
         // Prepare the textbox used to capture keyboard events.
         keyInputField.delegate = self;
@@ -223,7 +217,6 @@ static const double X1_MOUSE_SPEED_DIVISOR = 2.5;
         [keyInputField addTarget:self action:@selector(onKeyboardPressed:) forControlEvents:UIControlEventEditingChanged];
         // Undo causes issues for our state management, so turn it off
         [keyInputField.undoManager disableUndoRegistration];
-    //isInputingText = true;
     }
 }