add dbus debug "activeEffects"

REVIEW: 103572
CCBUG: 288948
CCBUG: 290025
(cherry picked from commit 089aeee91b807d13c0c2b86fa18d05776bef5190)

composite.cpp

@@ -275,6 +275,13 @@ void Workspace::toggleCompositing()
     }
 }
 
+QStringList Workspace::activeEffects() const
+{
+    if (effects)
+        return static_cast< EffectsHandlerImpl* >(effects)->activeEffects();
+    return QStringList();
+}
+
 void Workspace::updateCompositeBlocking(Client *c)
 {
     if (c) { // if c == 0 we just check if we can resume

effects.cpp

@@ -1253,6 +1253,18 @@ void EffectsHandlerImpl::effectsChanged()
     }
 }
 
+QStringList EffectsHandlerImpl::activeEffects() const
+{
+    QStringList ret;
+    for(QVector< KWin::EffectPair >::const_iterator it = loaded_effects.constBegin(),
+                                                    end = loaded_effects.constEnd(); it != end; ++it) {
+            if (it->second->isActive()) {
+                ret << it->first;
+            }
+        }
+    return ret;
+}
+
 EffectFrame* EffectsHandlerImpl::effectFrame(EffectFrameStyle style, bool staticSize, const QPoint& position, Qt::Alignment alignment) const
 {
     return new EffectFrameImpl(style, staticSize, position, alignment);

effects.h

@@ -170,6 +170,7 @@ public:
     QStringList listOfEffects() const;
 
     QList<EffectWindow*> elevatedWindows() const;
+    QStringList activeEffects() const;
 
 public Q_SLOTS:
     void slotClientGroupItemSwitched(EffectWindow* from, EffectWindow* to);

org.kde.KWin.xml

@@ -81,5 +81,8 @@
       <arg type="s" direction="in"/>
       <arg type="b" direction="out"/>
     </method>
+    <method name="activeEffects">
+      <arg type="as" direction="out"/>
+    </method>
   </interface>
 </node>

workspace.h

@@ -459,6 +459,7 @@ public:
     void previousTileLayout();
     bool stopActivity(const QString &id);
     bool startActivity(const QString &id);
+    QStringList activeEffects() const;
 
     void setCurrentScreen(int new_screen);