From 39aae34323ec2413e4535e32fff689597d36ee81 Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Thu, 13 Jun 2019 13:39:35 -0400
Subject: [PATCH] Avoids multiple calls to -[NSCursor hide] and -unhide.

Those are reference counted.
---
 OSBindings/Mac/Clock Signal/Views/CSOpenGLView.m | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/OSBindings/Mac/Clock Signal/Views/CSOpenGLView.m b/OSBindings/Mac/Clock Signal/Views/CSOpenGLView.m
index c65c813da..993deb3ff 100644
--- a/OSBindings/Mac/Clock Signal/Views/CSOpenGLView.m	
+++ b/OSBindings/Mac/Clock Signal/Views/CSOpenGLView.m	
@@ -219,9 +219,11 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeSt
 }
 
 - (void)releaseMouse {
-	_mouseIsCaptured = NO;
-	CGAssociateMouseAndMouseCursorPosition(true);
-	[NSCursor unhide];
+	if(_mouseIsCaptured) {
+		_mouseIsCaptured = NO;
+		CGAssociateMouseAndMouseCursorPosition(true);
+		[NSCursor unhide];
+	}
 }
 
 #pragma mark - Mouse motion
@@ -274,7 +276,7 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeSt
 #pragma mark - Mouse buttons
 
 - (void)applyButtonDown:(NSEvent *)event {
-	if(self.shouldCaptureMouse) {
+	if(self.shouldCaptureMouse && !_mouseIsCaptured) {
 		_mouseIsCaptured = YES;
 		[NSCursor hide];
 		CGAssociateMouseAndMouseCursorPosition(false);