From f00ec6ccd546134fe5e762df8fbb55835648bcd3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Thomas=20L=C3=BCbking?= <thomas.luebking@gmail.com>
Date: Sat, 23 Mar 2013 20:44:10 +0100
Subject: [PATCH] block screenswitch if active screen follows mouse

also inform the user about this

BUG: 183410
FIXED-IN: 4.11
REVIEW: 109678
---
 useractions.cpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/useractions.cpp b/useractions.cpp
index 67e726ae8e..7ccdbddaf3 100755
--- a/useractions.cpp
+++ b/useractions.cpp
@@ -1292,8 +1292,21 @@ void Workspace::slotWindowToDesktop()
     }
 }
 
+static bool screenSwitchImpossible()
+{
+    if (!options->isActiveMouseScreen())
+        return false;
+    QStringList args;
+    args << "--passivepopup" << i18n("The window manager is confgured to consider the screen with the mouse on it as active one.\n"
+                                     "Therefore it is not possible to switch to a screen explicitly.") << "20";
+    KProcess::startDetached("kdialog", args);
+    return true;
+}
+
 void Workspace::slotSwitchToScreen()
 {
+    if (screenSwitchImpossible())
+        return;
     const int i = senderValue(sender());
     if (i > -1)
         setCurrentScreen(i);
@@ -1301,6 +1314,8 @@ void Workspace::slotSwitchToScreen()
 
 void Workspace::slotSwitchToNextScreen()
 {
+    if (screenSwitchImpossible())
+        return;
     setCurrentScreen((activeScreen() + 1) % numScreens());
 }