Added signals appletTransformedByUsed and appletTransformedItself to

Plasma::Applet. This makes it easier for layouts to know when applets 
are transformed (moved/resized/rotated), and know whether the change
was by the user or the applet itself.

svn path=/trunk/KDE/kdelibs/; revision=923848

applet.h

@@ -607,6 +607,16 @@ class PLASMA_EXPORT Applet : public QGraphicsWidget
          */
         void geometryChanged();
 
+        /**
+         * Emitted when the user completes a transformation of the applet.
+         */
+        void appletTransformedByUser();
+
+        /**
+         * Emitted when the applet changes its own geometry or transform.
+         */
+        void appletTransformedItself();
+
         /**
          * Emitted by Applet subclasses when they change a sizeHint and wants to announce the change
          */

popupapplet.cpp

@@ -246,6 +246,7 @@ void PopupAppletPrivate::popupConstraintsEvent(Plasma::Constraints constraints)
             //size not saved/invalid size saved
             if (oldSize.width() < q->minimumSize().width() || oldSize.height() < q->minimumSize().height()) {
                 q->resize(prefSize);
+                emit q->appletTransformedItself();
             }
 
             //FIXME: this will be automatically propagated by the qgraphicslayout in the future

private/applethandle.cpp

@@ -72,6 +72,9 @@ AppletHandle::AppletHandle(Containment *parent, Applet *applet, const QPointF &h
                              Theme::defaultTheme()->colorScheme());
     m_gradientColor = colorScheme.background(KColorScheme::NormalBackground).color();
 
+    m_originalGeom = m_applet->geometry();
+    m_originalTransform = m_applet->transform();
+
     QTransform originalMatrix = m_applet->transform();
     m_applet->resetTransform();
 
@@ -167,6 +170,10 @@ void AppletHandle::detachApplet ()
 
     m_applet->setZValue(m_zValue);
 
+    if (m_applet->geometry() != m_originalGeom || m_applet->transform() != m_originalTransform) {
+        emit m_applet->appletTransformedByUser();
+    }
+
     m_applet->update(); // re-render the background, now we've transformed the applet
 
     m_applet = 0;

private/applethandle_p.h

@@ -127,6 +127,8 @@ class AppletHandle : public QObject, public QGraphicsItem
         QPointF m_entryPos; //where the hover in event occurred
         QPointF m_pos;      //current position of applet in sceneCoords
         qreal m_zValue;     //current zValue of the applet, so it can be restored after drag.
+        QRectF m_originalGeom;
+        QTransform m_originalTransform;
 
         // used for both resize and rotate
         QPointF m_origAppletCenter;