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+add pickle support for raster_symbolizer - see #345

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This commit is contained in:
Dane Springmeyer 2009-05-24 05:34:18 +00:00
parent a45a434f65
commit ff36980723
1 changed files with 40 additions and 1 deletions
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41
bindings/python/mapnik_raster_symbolizer.cpp
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@ -24,13 +24,52 @@
#include <boost/python.hpp>
#include <mapnik/raster_symbolizer.hpp>
using mapnik::raster_symbolizer;
struct raster_symbolizer_pickle_suite : boost::python::pickle_suite
{
/*
static boost::python::tuple
getinitargs(const raster_symbolizer& r)
{
return boost::python::make_tuple();
}
*/
static boost::python::tuple
getstate(const raster_symbolizer& r)
{
return boost::python::make_tuple(r.get_mode(),r.get_scaling(),r.get_opacity());
}
static void
setstate (raster_symbolizer& r, boost::python::tuple state)
{
using namespace boost::python;
if (len(state) != 3)
{
PyErr_SetObject(PyExc_ValueError,
("expected 3-item tuple in call to __setstate__; got %s"
% state).ptr()
);
throw_error_already_set();
}
r.set_mode(extract<std::string>(state[0]));
r.set_scaling(extract<std::string>(state[1]));
r.set_opacity(extract<float>(state[2]));
}
};
void export_raster_symbolizer()
{
using namespace boost::python;
using mapnik::raster_symbolizer;
class_<raster_symbolizer>("RasterSymbolizer",
init<>("Default ctor"))
.def_pickle(raster_symbolizer_pickle_suite())
.add_property("mode",
make_function(&raster_symbolizer::get_mode,return_value_policy<copy_const_reference>()),