Initial checkin

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9933 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-11-12 02:02:58 +00:00
parent 5344cdf47b
commit 39241fe228
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+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.2
+// Copyright (C) 2002-2004 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software 
+// is granted provided this copyright notice appears in all copies. 
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: [email protected]
+//          [email protected]
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+
+#ifndef AGG_SPAN_ALLOCATOR_INCLUDED
+#define AGG_SPAN_ALLOCATOR_INCLUDED
+
+#include "agg_basics.h"
+
+namespace agg
+{
+    //----------------------------------------------------------span_allocator
+    template<class ColorT> class span_allocator
+    {
+    public:
+        typedef ColorT color_type;
+
+        //--------------------------------------------------------------------
+        ~span_allocator()
+        {
+            delete [] m_span;
+        }
+
+        //--------------------------------------------------------------------
+        span_allocator() :
+            m_max_span_len(0),
+            m_span(0)
+        {
+        }
+
+        //--------------------------------------------------------------------
+        color_type* allocate(unsigned max_span_len)
+        {
+            if(max_span_len > m_max_span_len)
+            {
+                delete [] m_span;
+                m_span = new color_type[m_max_span_len = max_span_len];
+            }
+            return m_span;
+        }
+
+        //--------------------------------------------------------------------
+        color_type* span()
+        { 
+            return m_span; 
+        }
+
+    private:
+        //--------------------------------------------------------------------
+        span_allocator(const span_allocator<ColorT>&);
+        const span_allocator<ColorT>& operator = (const span_allocator<ColorT>&);
+
+        unsigned    m_max_span_len;
+        color_type* m_span;
+    };
+}
+
+
+#endif
+
+