INTEGRATION: CWS canvas02 (1.1.2); FILE ADDED

2005/10/11 15:39:27 thb 1.1.2.2: #i54170# Corrected license headers
2005/06/29 19:16:34 thb 1.1.2.1: #i48939# Added BxIBox classes, that complement the BxIRange ones (the old right and bottom line inclusive/exclusive clash)

1 files changed, 146 insertions, 0 deletions

diff --git a/basegfx/inc/basegfx/range/basicbox.hxx b/basegfx/inc/basegfx/range/basicbox.hxx
new file mode 100644
index 000000000000..1e201ef4482e
--- /dev/null
+++ b/basegfx/inc/basegfx/range/basicbox.hxx
@@ -0,0 +1,146 @@
+/*************************************************************************
+ *
+ *  OpenOffice.org - a multi-platform office productivity suite
+ *
+ *  $RCSfile: basicbox.hxx,v $
+ *
+ *  $Revision: 1.2 $
+ *
+ *  last change: $Author: kz $ $Date: 2005-11-02 13:55:29 $
+ *
+ *  The Contents of this file are made available subject to
+ *  the terms of GNU Lesser General Public License Version 2.1.
+ *
+ *
+ *    GNU Lesser General Public License Version 2.1
+ *    =============================================
+ *    Copyright 2005 by Sun Microsystems, Inc.
+ *    901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *    This library is free software; you can redistribute it and/or
+ *    modify it under the terms of the GNU Lesser General Public
+ *    License version 2.1, as published by the Free Software Foundation.
+ *
+ *    This library 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 for more details.
+ *
+ *    You should have received a copy of the GNU Lesser General Public
+ *    License along with this library; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *    MA  02111-1307  USA
+ *
+ ************************************************************************/
+
+#ifndef _BGFX_RANGE_BASICBOX_HXX
+#define _BGFX_RANGE_BASICBOX_HXX
+
+#ifndef _BGFX_RANGE_BASICRANGE_HXX
+#include <basegfx/range/basicrange.hxx>
+#endif
+
+
+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 */