From bd1407b7c512006509fd9aa09627cef4108decf8 Mon Sep 17 00:00:00 2001
From: Dane Springmeyer <dane@dbsgeo.com>
Date: Sun, 24 May 2009 05:45:07 +0000
Subject: [PATCH] +add pickle support for pattern symbolizers - see #345

---
 .../python/mapnik_line_pattern_symbolizer.cpp   | 13 +++++++++++++
 .../mapnik_polygon_pattern_symbolizer.cpp       | 17 +++++++++++++++--
 2 files changed, 28 insertions(+), 2 deletions(-)

diff --git a/bindings/python/mapnik_line_pattern_symbolizer.cpp b/bindings/python/mapnik_line_pattern_symbolizer.cpp
index f0de960c2..3e0265834 100644
--- a/bindings/python/mapnik_line_pattern_symbolizer.cpp
+++ b/bindings/python/mapnik_line_pattern_symbolizer.cpp
@@ -22,10 +22,22 @@
 //$Id$
 
 #include <boost/python.hpp>
+#include <mapnik/image_util.hpp>
 #include <mapnik/line_pattern_symbolizer.hpp>
 
 using mapnik::line_pattern_symbolizer;
 
+struct line_pattern_symbolizer_pickle_suite : boost::python::pickle_suite
+{
+   static boost::python::tuple
+   getinitargs(const line_pattern_symbolizer& l)
+   {
+      boost::shared_ptr<mapnik::ImageData32> img = l.get_image();
+      const std::string & filename = l.get_filename();
+      return boost::python::make_tuple(filename,mapnik::guess_type(filename),img->width(),img->height());
+   }
+};
+
 void export_line_pattern_symbolizer()
 {
     using namespace boost::python;
@@ -33,5 +45,6 @@ void export_line_pattern_symbolizer()
     class_<line_pattern_symbolizer>("LinePatternSymbolizer",
 				    init<std::string const&,
 				    std::string const&,unsigned,unsigned>("TODO"))
+        .def_pickle(line_pattern_symbolizer_pickle_suite())
 	;    
 }
diff --git a/bindings/python/mapnik_polygon_pattern_symbolizer.cpp b/bindings/python/mapnik_polygon_pattern_symbolizer.cpp
index e76081b54..0d731a4c7 100644
--- a/bindings/python/mapnik_polygon_pattern_symbolizer.cpp
+++ b/bindings/python/mapnik_polygon_pattern_symbolizer.cpp
@@ -22,16 +22,29 @@
 //$Id$
 
 #include <boost/python.hpp>
+#include <mapnik/image_util.hpp>
 #include <mapnik/polygon_pattern_symbolizer.hpp>
 
+using mapnik::polygon_pattern_symbolizer;
+
+struct polygon_pattern_symbolizer_pickle_suite : boost::python::pickle_suite
+{
+   static boost::python::tuple
+   getinitargs(const polygon_pattern_symbolizer& p)
+   {
+      boost::shared_ptr<mapnik::ImageData32> img = p.get_image();
+      const std::string & filename = p.get_filename();
+      return boost::python::make_tuple(filename,mapnik::guess_type(filename),img->width(),img->height());
+   }
+};
+
 void export_polygon_pattern_symbolizer()
 {
     using namespace boost::python;
-    using mapnik::polygon_pattern_symbolizer;
     
     class_<polygon_pattern_symbolizer>("PolygonPatternSymbolizer",
 				       init<std::string const&,
 				       std::string const&,
 				       unsigned,unsigned>("TODO"))
-	;    
+        .def_pickle(polygon_pattern_symbolizer_pickle_suite())	;    
 }