From cda447745819cfa5fadf7350ec6707447a47b5f6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lubo=C5=A1=20Lu=C5=88=C3=A1k?= <l.lunak@kde.org>
Date: Sun, 9 Mar 2008 20:06:11 +0000
Subject: [PATCH] Add a hack that somewhat improves screen repaint after X
 session switch with drivers that have a problem with this. CCBUG: 154825

svn path=/trunk/KDE/kdebase/workspace/; revision=783860
---
 events.cpp  | 7 ++++++-
 workspace.h | 2 +-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/events.cpp b/events.cpp
index 39d9d99739..f43fc4134d 100644
--- a/events.cpp
+++ b/events.cpp
@@ -477,8 +477,13 @@ bool Workspace::workspaceEvent( XEvent * e )
         case VisibilityNotify:
             if( compositing() && overlay != None && e->xvisibility.window == overlay )
                 {
+                bool was_visible = overlay_visible;
                 overlay_visible = ( e->xvisibility.state != VisibilityFullyObscured );
-                addRepaintFull();
+                if( !was_visible && overlay_visible )
+                    { // hack for #154825
+                    addRepaintFull();
+                    QTimer::singleShot( 2000, this, SLOT( addRepaintFull()));
+                    }
                 }
             break;
         default:
diff --git a/workspace.h b/workspace.h
index 0fa62776ff..6d7155ebca 100644
--- a/workspace.h
+++ b/workspace.h
@@ -314,7 +314,6 @@ class Workspace : public QObject, public KDecorationDefines
         // either Toplevel::addRepaint() or Toplevel::addWorkspaceRepaint()
         void addRepaint( const QRect& r );
         void addRepaint( int x, int y, int w, int h );
-        void addRepaintFull();
         // creates XComposite overlay window, call initOverlay() afterwards
         bool createOverlay();
         // init overlay and the destination window in it
@@ -324,6 +323,7 @@ class Workspace : public QObject, public KDecorationDefines
         Window overlayWindow();
 
     public slots:
+        void addRepaintFull();
         void refresh();
     // keybindings
         void slotSwitchDesktopNext();