From 7b3c58280b13ec0ba052ad7c3f2751d22fb9f08a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20L=C3=BCbking?= <thomas.luebking@gmail.com>
Date: Tue, 24 Jan 2012 16:58:33 +0100
Subject: [PATCH] Support withdrawal of shadows

The Oxygen deco uses this to remove built-in shadows from decorated windows when adding (legacy...) decoration shadows

CCBUG: 291774
REVIEW: 103751
(cherry picked from commit a97bdc64fa2a676f99738abd371a99126fb8e93d)
---
 shadow.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/shadow.cpp b/shadow.cpp
index b5a7e08cef..de989c7955 100644
--- a/shadow.cpp
+++ b/shadow.cpp
@@ -206,6 +206,9 @@ bool Shadow::updateShadow()
 {
     QVector<long> data = Shadow::readX11ShadowProperty(m_topLevel->window());
     if (data.isEmpty()) {
+        if (m_topLevel && m_topLevel->effectWindow() && m_topLevel->effectWindow()->sceneWindow())
+            m_topLevel->effectWindow()->sceneWindow()->updateShadow(0);
+        deleteLater();
         return false;
     }
     init(data);