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
157 changed files with 50650 additions and 0 deletions
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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_PATTERN_RGBA32_INCLUDED
+#define AGG_SPAN_PATTERN_RGBA32_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_pixfmt_rgba32.h"
+#include "agg_span_pattern.h"
+
+namespace agg
+{
+
+    //======================================================span_pattern_rgba32
+    template<class Order, class Allocator = span_allocator<rgba8> >
+    class span_pattern_rgba32 : public span_pattern<rgba8, int8u, Allocator>
+    {
+    public:
+        typedef Allocator alloc_type;
+        typedef rgba8 color_type;
+        typedef span_pattern<color_type, int8u, alloc_type> base_type;
+
+        //--------------------------------------------------------------------
+        span_pattern_rgba32(alloc_type& alloc) : base_type(alloc) {}
+
+        //----------------------------------------------------------------
+        span_pattern_rgba32(alloc_type& alloc,
+                            const rendering_buffer& src, 
+                            unsigned offset_x, unsigned offset_y) :
+            base_type(alloc, src, offset_x, offset_y, 0)
+        {}
+
+        //--------------------------------------------------------------------
+        color_type* generate(int x, int y, unsigned len)
+        {   
+            color_type* span = base_type::allocator().span();
+            unsigned sx = (base_type::offset_x() + x) % base_type::source_image().width();
+            unsigned wp = base_type::source_image().width() << 2;
+            const int8u* p = base_type::source_image().row((base_type::offset_y() + y) % base_type::source_image().height());
+            p += sx << 2;
+            do
+            {
+                span->r = p[Order::R];
+                span->g = p[Order::G];
+                span->b = p[Order::B];
+                span->a = p[Order::A];
+                p += 4;
+                ++sx;
+                ++span;
+                if(sx >= base_type::source_image().width())
+                {
+                    sx -= base_type::source_image().width();
+                    p -= wp;
+                }
+            }
+            while(--len);
+            return base_type::allocator().span();
+        }
+    };
+
+}
+
+#endif
+