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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _BGFX_RANGE_BASICBOX_HXX
+#define _BGFX_RANGE_BASICBOX_HXX
+
+#include <basegfx/range/basicrange.hxx>
+
+
+namespace basegfx
+{
+ /** Specialization of BasicRange, handling the inside predicates
+ differently.
+
+ This template considers the rightmost and bottommost border as
+ <em>outside</em> of the range, in contrast to BasicRange,
+ which considers them inside.
+ */
+ class BasicBox : public BasicRange< sal_Int32, Int32Traits >
+ {
+ typedef BasicRange< sal_Int32, Int32Traits > Base;
+ public:
+ BasicBox() :
+ Base()
+ {
+ }
+
+ BasicBox( sal_Int32 nValue ) :
+ Base( nValue )
+ {
+ }
+
+ BasicBox(const BasicBox& rBox) :
+ Base( rBox )
+ {
+ }
+
+ double getCenter() const
+ {
+ if(isEmpty())
+ {
+ return 0.0;
+ }
+ else
+ {
+ return ((mnMaximum + mnMinimum - 1.0) / 2.0);
+ }
+ }
+
+ using Base::isInside;
+
+ bool isInside(sal_Int32 nValue) const
+ {
+ if(isEmpty())
+ {
+ return false;
+ }
+ else
+ {
+ return (nValue >= mnMinimum) && (nValue < mnMaximum);
+ }
+ }
+
+ using Base::overlaps;
+
+ bool overlaps(const BasicBox& rBox) const
+ {
+ if(isEmpty())
+ {
+ return false;
+ }
+ else
+ {
+ if(rBox.isEmpty())
+ {
+ return false;
+ }
+ else
+ {
+ return !((rBox.mnMaximum <= mnMinimum) || (rBox.mnMinimum >= mnMaximum));
+ }
+ }
+ }
+
+ void grow(sal_Int32 nValue)
+ {
+ if(!isEmpty())
+ {
+ bool bLessThanZero(nValue < 0);
+
+ if(nValue > 0 || bLessThanZero)
+ {
+ mnMinimum -= nValue;
+ mnMaximum += nValue;
+
+ if(bLessThanZero)
+ {
+ // test if range did collapse
+ if(mnMinimum > mnMaximum)
+ {
+ // if yes, collapse to center
+ mnMinimum = mnMaximum = ((mnMaximum + mnMinimum - 1) / 2);
+ }
+ }
+ }
+ }
+ }
+ };
+
+} // end of namespace basegfx
+
+#endif /* _BGFX_RANGE_BASICBOX_HXX */