+ marker_cache impl

include/mapnik/svg/marker_cache.hpp

@@ -28,7 +28,7 @@
 // mapnik
 #include <mapnik/utils.hpp>
 #include <mapnik/config.hpp>
-#include <mapnik/image_data.hpp>
+#include <mapnik/svg/agg_svg_path_renderer.h>
 
 // boost
 #include <boost/utility.hpp>
@@ -40,18 +40,18 @@
 namespace mapnik
 {
 
-typedef boost::shared_ptr<image_data_32> path_ptr;
+typedef boost::shared_ptr<agg::svg::path_renderer> path_ptr;
 
-struct MAPNIK_DECL image_cache :
-	public singleton <image_cache, CreateStatic>,
+struct MAPNIK_DECL marker_cache :
+	public singleton <marker_cache, CreateStatic>,
 	private boost::noncopyable
 {
 
-    friend class CreateStatic<image_cache>;
+    friend class CreateStatic<marker_cache>;
     static boost::mutex mutex_;
-    static boost::unordered_map<std::string,image_ptr> cache_;
-    static bool insert(std::string const& key, image_ptr);
-    static boost::optional<image_ptr> find(std::string const& key, bool update_cache = false);
+    static boost::unordered_map<std::string,path_ptr> cache_;
+    static bool insert(std::string const& key, path_ptr);
+    static boost::optional<path_ptr> find(std::string const& key, bool update_cache = false);
 };
 
 }

src/SConscript

@@ -126,6 +126,7 @@ if True :
     svg_path_parser.cpp
     svg_points_parser.cpp 
     svg_transform_parser.cpp
+    marker_cache.cpp
     """ 
         )
 

src/agg_renderer.cpp

@@ -25,6 +25,7 @@
 #include <mapnik/agg_renderer.hpp>
 #include <mapnik/image_util.hpp>
 #include <mapnik/image_cache.hpp>
+#include <mapnik/svg/marker_cache.hpp>
 #include <mapnik/unicode.hpp>
 #include <mapnik/placement_finder.hpp>
 #include <mapnik/markers_converter.hpp>

src/marker_cache.cpp

@@ -0,0 +1,93 @@
+/*****************************************************************************
+ * 
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2010 Artem Pavlenko
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *****************************************************************************/
+
+//$Id$
+
+// mapnik
+#include <mapnik/svg/marker_cache.hpp>
+#include <mapnik/svg/agg_svg_parser.h>
+
+// boost
+#include <boost/assert.hpp>
+#include <boost/filesystem/operations.hpp>
+#include <boost/algorithm/string.hpp>
+
+namespace mapnik 
+{
+
+boost::unordered_map<std::string, path_ptr> marker_cache::cache_;
+
+bool marker_cache::insert (std::string const& uri, path_ptr path)
+{
+#ifdef MAPNIK_THREADSAFE
+    mutex::scoped_lock lock(mutex_);
+#endif
+    return cache_.insert(std::make_pair(uri,path)).second;
+}
+
+boost::optional<path_ptr> marker_cache::find(std::string const& uri, bool update_cache)
+{
+#ifdef MAPNIK_THREADSAFE
+    mutex::scoped_lock lock(mutex_);
+#endif
+    typedef boost::unordered_map<std::string, path_ptr>::const_iterator iterator_type;
+    boost::optional<path_ptr> result;
+    iterator_type itr = cache_.find(uri);
+    if (itr != cache_.end())
+    {
+	result.reset(itr->second);
+	return result;
+    }
+
+    // we can't find marker in cache, lets try to load it from filesystem
+    boost::filesystem::path path(uri);
+    if (exists(path))
+    {
+	try 
+	{
+	    mapnik::path_ptr marker(new agg::svg::path_renderer);
+	    agg::svg::parser p(*marker);
+	    marker->arrange_orientations();
+	    p.parse(uri.c_str());
+	    //marker->bounding_rect(&lox, &loy, &hix, &hiy);
+	    if (update_cache)
+	    {
+		cache_.insert(std::make_pair(uri,marker));
+	    }	    
+	}
+	catch (...)
+	{
+	    std::cerr << "Exception caught while loading SVG: " << uri << std::endl;
+	}
+    }
+    else
+    {
+        std::cerr << "### WARNING SVG does not exist: " << uri << std::endl;
+    }
+    return result;
+}
+
+#ifdef MAPNIK_THREADSAFE
+   boost::mutex marker_cache::mutex_;
+#endif
+
+}