From 7fd48a6bec2ddc3d8b75fc49e76e9e77d2029da6 Mon Sep 17 00:00:00 2001
From: "pierre%netscape.com" <pierre%netscape.com>
Date: Tue, 19 Jan 1999 19:29:43 +0000
Subject: [PATCH] fixed Scroll() in case the caller passes a null clipRect

---
 widget/src/mac/nsWindow.cpp | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/widget/src/mac/nsWindow.cpp b/widget/src/mac/nsWindow.cpp
index 75fb3fe4ba8..f835ca18368 100644
--- a/widget/src/mac/nsWindow.cpp
+++ b/widget/src/mac/nsWindow.cpp
@@ -785,8 +785,17 @@ NS_IMETHODIMP nsWindow::Scroll(PRInt32 aDx, PRInt32 aDy, nsRect *aClipRect)
 {
 	// scroll the rect
 	StartDraw();
+		nsRect scrollRect;
+		if (aClipRect)
+			scrollRect = *aClipRect;
+		else
+		{
+			scrollRect = mBounds;
+			scrollRect.x = scrollRect.y = 0;
+		}
+
 		Rect macRect;
-		nsRectToMacRect(*aClipRect, macRect);
+		nsRectToMacRect(scrollRect, macRect);
 
 		RgnHandle updateRgn = ::NewRgn();
 		if (updateRgn == nil)