1 files changed, 117 insertions, 0 deletions
diff --git a/basegfx/inc/basegfx/range/b2dmultirange.hxx b/basegfx/inc/basegfx/range/b2dmultirange.hxx
new file mode 100644
index 000000000000..d3a0259f0d27
--- /dev/null
+++ b/basegfx/inc/basegfx/range/b2dmultirange.hxx
@@ -0,0 +1,117 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2008 by Sun Microsystems, Inc.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: b2dmultirange.hxx,v $
+ * $Revision: 1.6 $
+ *
+ * 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_B2DMULTIRANGE_HXX
+#define _BGFX_RANGE_B2DMULTIRANGE_HXX
+
+#include <o3tl/cow_wrapper.hxx>
+#include <memory>
+
+
+namespace basegfx
+{
+    class B2DTuple;
+    class B2DRange;
+    class B2DPolyPolygon;
+    class ImplB2DMultiRange;
+
+    /** Multiple ranges in one object.
+
+        This class combines multiple ranges in one object, providing a
+        total, enclosing range for it.
+
+        You can use this class e.g. when updating views containing
+        rectangular objects. Add each modified object to a
+        B2DMultiRange, then test each viewable object against
+        intersection with the multi range.
+     */
+    class B2DMultiRange
+    {
+    public:
+        B2DMultiRange();
+        ~B2DMultiRange();
+
+        /** Create a multi range with exactly one containing range
+         */
+        explicit B2DMultiRange( const B2DRange& rRange );
+
+        B2DMultiRange( const B2DMultiRange& );
+        B2DMultiRange& operator=( const B2DMultiRange& );
+
+        /** Check whether range is empty.
+
+            @return true, if this object either contains no ranges at
+            all, or all contained ranges are empty.
+         */
+        bool            isEmpty() const;
+
+        /** Reset to empty.
+
+            After this call, the object will not contain any ranges,
+            and isEmpty() will return true.
+         */
+        void            reset();
+
+        /** Test whether given tuple is inside one or more of the
+            included ranges.
+         */
+        bool            isInside( const B2DTuple& rTuple ) const;
+
+        /** Test whether given range is inside one or more of the
+            included ranges.
+         */
+        bool            isInside( const B2DRange& rRange ) const;
+
+        /** Test whether given range overlaps one or more of the
+            included ranges.
+         */
+        bool            overlaps( const B2DRange& rRange ) const;
+
+        /** Add given range to the number of contained ranges.
+         */
+        void            addRange( const B2DRange& rRange );
+
+        /** Get overall bound rect for all included ranges.
+         */
+        B2DRange        getBounds() const;
+
+        /** Request poly-polygon representing the added ranges.
+
+            This method creates a poly-polygon, consisting exactly out
+            of the contained ranges.
+         */
+        B2DPolyPolygon  getPolyPolygon() const;
+
+    private:
+        o3tl::cow_wrapper< ImplB2DMultiRange > mpImpl;
+    };
+}
+
+#endif /* _BGFX_RANGE_B2DMULTIRANGE_HXX */