ctkExpandButton horizontal policy is fixed

The button shall never be wider than it's original width

Libs/Widgets/ctkExpandButton.cpp

@@ -54,7 +54,7 @@ void ctkExpandButtonPrivate::init()
   Q_Q(ctkExpandButton);
   q->setAutoRaise(true);
   q->setOrientation(Qt::Horizontal);
-  q->setSizePolicy(QSizePolicy::Minimum,QSizePolicy::Minimum);
+  q->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Minimum);
   q->setCheckable(true);
 }
 

Libs/Widgets/ctkExpandButton.h

@@ -40,7 +40,8 @@ class ctkExpandButtonPrivate;
 /// we can set the orientation of the icon with setOrientation()
 /// the widget can also mirror the icon on click if mirrorOnExpand is true.
 
-class CTK_WIDGETS_EXPORT  ctkExpandButton : public QToolButton
+class CTK_WIDGETS_EXPORT ctkExpandButton
+  : public QToolButton
 {
   Q_OBJECT
   Q_PROPERTY(bool mirrorOnExpand READ mirrorOnExpand WRITE setMirrorOnExpand)