changed checkbox name and simplified code for swapDisplayScreens

resources/forms/preferences.ui

@@ -134,7 +134,7 @@
           <item row="2" column="3">
            <widget class="QCheckBox" name="swapDisplayScreensCheckBox">
             <property name="text">
-             <string>Swap first and second displays</string>
+             <string>Swap first and second view displays</string>
             </property>
            </widget>
           </item>

src/core/UBDisplayManager.cpp

@@ -109,46 +109,7 @@ void UBDisplayManager::initScreenIndexes()
 
 void UBDisplayManager::swapDisplayScreens(bool swap)
 {
-    int screenCount = numScreens();
+    initScreenIndexes();
-
-    mScreenIndexesRoles.clear();
-
-    if (screenCount > 0)
-    {
-        mControlScreenIndex = mDesktop->primaryScreen();
-        if (screenCount > 1 && UBSettings::settings()->swapControlAndDisplayScreens->get().toBool())
-        {
-            mControlScreenIndex = mControlScreenIndex^1;
-        }
-        mScreenIndexesRoles << Control;
-    }
-    else
-    {
-        mControlScreenIndex = -1;
-    }
-
-    if (screenCount > 1 && mUseMultiScreen)
-    {
-        mDisplayScreenIndex = mControlScreenIndex != 0 ? 0 : 1;
-        mScreenIndexesRoles << Display;
-    }
-    else
-    {
-        mDisplayScreenIndex = -1;
-    }
-
-    mPreviousScreenIndexes.clear();
-
-    if (screenCount > 2)
-    {
-        for(int i = 2; i < screenCount; i++)
-        {
-            if(mControlScreenIndex == i)
-                mPreviousScreenIndexes.append(1);
-            else
-                mPreviousScreenIndexes.append(i);
-        }
-    }
 
     if (swap)
     {