From d8f18ce4e425ac009fa3edc8df4b3eb5f4776a54 Mon Sep 17 00:00:00 2001
From: "michaelp%netscape.com"
 <michaelp%netscape.com@18797224-902f-48f8-a5cc-f745e15eee43>
Date: Tue, 3 Nov 1998 01:49:30 +0000
Subject: [PATCH] fixed bug where changing view opacity or transparency would
 not trigger a refresh.

git-svn-id: svn://10.0.0.236/trunk@13948 18797224-902f-48f8-a5cc-f745e15eee43
---
 mozilla/view/src/nsViewManager.cpp | 28 ++++++++++++++++++++++------
 1 file changed, 22 insertions(+), 6 deletions(-)

diff --git a/mozilla/view/src/nsViewManager.cpp b/mozilla/view/src/nsViewManager.cpp
index 925f0ebb77b..8c914a6be17 100644
--- a/mozilla/view/src/nsViewManager.cpp
+++ b/mozilla/view/src/nsViewManager.cpp
@@ -1068,18 +1068,34 @@ NS_IMETHODIMP nsViewManager :: GetViewClipAbsolute(nsIView *aView, nsRect *rect,
 
 NS_IMETHODIMP nsViewManager :: SetViewContentTransparency(nsIView *aView, PRBool aTransparent)
 {
-  UpdateTransCnt(aView, nsnull);
-  aView->SetContentTransparency(aTransparent);
-  UpdateTransCnt(nsnull, aView);
+  PRBool trans;
+
+  aView->HasTransparency(trans);
+
+  if (trans != aTransparent)
+  {
+    UpdateTransCnt(aView, nsnull);
+    aView->SetContentTransparency(aTransparent);
+    UpdateTransCnt(nsnull, aView);
+    UpdateView(aView, nsnull, 0);
+  }
 
   return NS_OK;
 }
 
 NS_IMETHODIMP nsViewManager :: SetViewOpacity(nsIView *aView, float aOpacity)
 {
-  UpdateTransCnt(aView, nsnull);
-  aView->SetOpacity(aOpacity);
-  UpdateTransCnt(nsnull, aView);
+  float opacity;
+
+  aView->GetOpacity(opacity);
+
+  if (opacity != aOpacity)
+  {
+    UpdateTransCnt(aView, nsnull);
+    aView->SetOpacity(aOpacity);
+    UpdateTransCnt(nsnull, aView);
+    UpdateView(aView, nsnull, 0);
+  }
 
   return NS_OK;
 }