From 542c5fbedcba5bccd92b1b3bd9ed6dd6457cebea Mon Sep 17 00:00:00 2001
From: Robert Grant <rob@plasq.com>
Date: Thu, 26 May 2011 13:59:47 -0400
Subject: [PATCH] Cut down the amount of redrawing when simply moving the
 window around

---
 AppKit/NSWindow.m | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/AppKit/NSWindow.m b/AppKit/NSWindow.m
index b0d9cc96..0c2206cd 100755
--- a/AppKit/NSWindow.m
+++ b/AppKit/NSWindow.m
@@ -2591,11 +2591,16 @@ NSString * const NSWindowDidAnimateNotification=@"NSWindowDidAnimateNotification
    [_childWindows makeObjectsPerformSelector:@selector(_parentWindowDidChangeFrame:) withObject:self];
    [_drawers makeObjectsPerformSelector:@selector(parentWindowDidChangeFrame:) withObject:self];
 
-   [_backgroundView setFrameSize:_frame.size];
-   [_backgroundView setNeedsDisplay:YES];
+	if (didSize) {
+		// Don't redraw everything unless we really have to
+		[_backgroundView setFrameSize:_frame.size];
+		[_backgroundView setNeedsDisplay:YES];
+		
+		// And make sure the cursor rect align with the new size
+		[self resetCursorRects];
+	}
 
    [self saveFrameUsingName:_autosaveFrameName];
-   [self resetCursorRects];
    
    if(didSize){
     [self postNotificationName:NSWindowDidResizeNotification];