added setTrackContainmentChanges to view. necesarry for improved drag&drop visualisation.

svn path=/trunk/KDE/kdebase/workspace/libs/plasma/; revision=802187

view.cpp

@@ -35,6 +35,7 @@ class View::Private
 public:
     Private(View *view, int uniqueId)
         : drawWallpaper(true),
+          trackChanges(true),
           desktop(-1),
           containment(0),
           q(view)
@@ -54,7 +55,7 @@ public:
 
     void updateSceneRect()
     {
-        if (!containment) {
+        if (!containment || !trackChanges) {
             return;
         }
 
@@ -81,6 +82,7 @@ public:
     }
 
     bool drawWallpaper;
+    bool trackChanges;
     int desktop;
     int viewId;
     Plasma::Containment *containment;

view.h

@@ -124,6 +124,17 @@ public:
      */
     Containment* containment() const;
 
+    /**
+     * Surpress the default behavior where the view tracks changes to the
+     * containment, and adapts itself to it.
+     */
+    void setTrackContainmentChanges(bool trackChanges);
+
+    /**
+     * @return whether or not the view tracks changes to the containment
+     */
+    bool trackContainmentChanges();
+
     /**
      * @return the id of the View set in the constructor
      */