add a function that returns the center of a given normalized rect

svn path=/trunk/KDE/kdegraphics/okular/; revision=1048191

core/area.cpp

@@ -158,6 +158,11 @@ bool NormalizedRect::operator==( const NormalizedRect & r ) const
          fabs( bottom - r.bottom ) < 1e-4 );
 }
 
+NormalizedPoint NormalizedRect::center() const
+{
+    return NormalizedPoint((left+right)/2.0, (top+bottom)/2.0);
+}
+
 /*
 QDebug operator << (QDebug str , const NormalizedRect &r)
 {

core/area.h

@@ -191,6 +191,12 @@ class OKULAR_EXPORT NormalizedRect
          */
         bool operator==( const NormalizedRect &other ) const;
 
+        /**
+         * Returns the center of the rectangle
+         * @since 0.10 (KDE 4.4)
+         */
+        NormalizedPoint center() const;
+
         /**
          * Transforms the normalized rectangle with the operations defined by @p matrix.
          */