From d33323be67188eac5a36496f0272ca442761c5dc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lubo=C5=A1=20Lu=C5=88=C3=A1k?= <l.lunak@kde.org>
Date: Mon, 4 Dec 2006 18:31:36 +0000
Subject: [PATCH] Paint only windows that are visible.

svn path=/branches/work/kwin_composite/; revision=610615
---
 scene.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/scene.cpp b/scene.cpp
index b61fbaeb7c..bdbfe37b0a 100644
--- a/scene.cpp
+++ b/scene.cpp
@@ -286,8 +286,10 @@ QRegion Scene::Window::shape() const
 
 bool Scene::Window::isVisible() const
     {
-    return true; // TODO there may be transformations, so always true for now
-    // TODO mapping state?
+    if( Client* c = dynamic_cast< Client* >( toplevel ))
+        return c->isShown( true ) && c->isOnCurrentDesktop();
+    return true; // Unmanaged is always visible
+    // TODO there may be transformations, so ignore this for now
     return !toplevel->geometry()
         .intersect( QRect( 0, 0, displayWidth(), displayHeight()))
         .isEmpty();