No longer pass changed mask from KWin core to the decorations

The changed mask is going to be replaced by more specific signals so
we don't need to calculate the change mask in KWin core anymore.

We still need to call reset in the decoration plugin to check whether
a new decoration library needs to be loaded.

libkdecorations/kdecoration_plugins_p.cpp

@@ -69,21 +69,12 @@ QString KDecorationPlugins::currentPlugin()
     return pluginStr;
 }
 
-bool KDecorationPlugins::reset(unsigned long changed)
+bool KDecorationPlugins::reset()
 {
     QString oldPlugin = pluginStr;
     config->reparseConfiguration();
-    bool ret = false;
-    if ((!loadPlugin(QString()) && library)     // "" = read the one in cfg file
-            || oldPlugin == pluginStr) {
-        // no new plugin loaded, reset the old one
-//       assert( fact != NULL );
-        if (fact != NULL) {
-            ret = fact->reset(changed);
-        }
-
-    }
-    return ret || oldPlugin != pluginStr;
+    loadPlugin(QString()); // "" = read the one in cfg file
+    return oldPlugin != pluginStr;
 }
 
 KDecorationFactory* KDecorationPlugins::factory()

libkdecorations/kdecoration_plugins_p.h

@@ -58,7 +58,7 @@ public:
     const KDecorationFactory* factory() const;
     KDecoration* createDecoration(KDecorationBridge*);
     QString currentPlugin();
-    bool reset(unsigned long changed);   // returns true if decorations need to be recreated
+    bool reset();   // returns true if decorations need to be recreated
 protected:
     virtual void error(const QString& error_msg);
     QString defaultPlugin; // FRAME normalne protected?

options.cpp

@@ -775,9 +775,9 @@ void Options::reparseConfiguration()
     m_settings->config()->reparseConfiguration();
 }
 
-unsigned long Options::updateSettings()
+void Options::updateSettings()
 {
-    unsigned long changed = loadConfig();
+    loadConfig();
     // Read button tooltip animation effect from kdeglobals
     // Since we want to allow users to enable window decoration tooltips
     // and not kstyle tooltips and vise-versa, we don't read the
@@ -792,15 +792,12 @@ unsigned long Options::updateSettings()
     reloadCompositingSettings();
 
     emit configChanged();
-
-    return changed;
 }
 
-unsigned long Options::loadConfig()
+void Options::loadConfig()
 {
     m_settings->readConfig();
-    unsigned long changed = 0;
-    changed |= KDecorationOptions::updateSettings(m_settings->config());   // read decoration settings
+    KDecorationOptions::updateSettings(m_settings->config());   // read decoration settings
 
     syncFromKcfgc();
 
@@ -836,8 +833,6 @@ unsigned long Options::loadConfig()
     setMaxFpsInterval(1 * 1000 * 1000 * 1000 / config.readEntry("MaxFPS", Options::defaultMaxFps()));
     setRefreshRate(config.readEntry("RefreshRate", Options::defaultRefreshRate()));
     setVBlankTime(config.readEntry("VBlankTime", Options::defaultVBlankTime()) * 1000); // config in micro, value in nano resolution
-
-    return changed;
 }
 
 void Options::syncFromKcfgc()

options.h

@@ -199,7 +199,7 @@ public:
     explicit Options(QObject *parent = NULL);
     ~Options();
 
-    virtual unsigned long updateSettings();
+    void updateSettings();
 
     /*!
       Different focus policies:
@@ -735,7 +735,7 @@ public:
     /**
      * Performs loading all settings except compositing related.
      **/
-    unsigned long loadConfig();
+    void loadConfig();
     /**
      * Performs loading of compositing settings which do not depend on OpenGL.
      **/

workspace.cpp

@@ -804,22 +804,15 @@ void Workspace::slotReconfigure()
     bool borderlessMaximizedWindows = options->borderlessMaximizedWindows();
 
     KSharedConfig::openConfig()->reparseConfiguration();
-    unsigned long changed = options->updateSettings();
+    options->updateSettings();
 
     emit configChanged();
     m_userActionsMenu->discard();
     updateToolWindows(true);
 
     DecorationPlugin *deco = DecorationPlugin::self();
-    if (!deco->isDisabled() && deco->reset(changed)) {
+    if (!deco->isDisabled() && deco->reset()) {
         // Decorations need to be recreated
-
-        // This actually seems to make things worse now
-        //QWidget curtain;
-        //curtain.setBackgroundMode( NoBackground );
-        //curtain.setGeometry( Kephal::ScreenUtils::desktopGeometry() );
-        //curtain.show();
-
         for (ClientList::ConstIterator it = clients.constBegin(); it != clients.constEnd(); ++it)
             (*it)->updateDecoration(true, true);
         // If the new decoration doesn't supports tabs then ungroup clients