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/*****************************************************************************
*
* 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
*
*****************************************************************************/
// boost
#include <boost/python.hpp>
#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
// mapnik
#include <mapnik/raster_colorizer.hpp>
using mapnik::raster_colorizer;
using mapnik::raster_colorizer_ptr;
using mapnik::colorizer_stop;
using mapnik::colorizer_stops;
using mapnik::colorizer_mode_enum;
using mapnik::color;
using mapnik::COLORIZER_INHERIT;
using mapnik::COLORIZER_LINEAR;
using mapnik::COLORIZER_DISCRETE;
using mapnik::COLORIZER_EXACT;
namespace {
void add_stop(raster_colorizer_ptr & rc, colorizer_stop & stop)
{
rc->add_stop(stop);
}
void add_stop2(raster_colorizer_ptr & rc, float v) {
colorizer_stop stop(v, rc->get_default_mode(), rc->get_default_color());
rc->add_stop(stop);
}
void add_stop3(raster_colorizer_ptr &rc, float v, color c) {
colorizer_stop stop(v, rc->get_default_mode(), c);
rc->add_stop(stop);
}
void add_stop4(raster_colorizer_ptr &rc, float v, colorizer_mode_enum m) {
colorizer_stop stop(v, m, rc->get_default_color());
rc->add_stop(stop);
}
void add_stop5(raster_colorizer_ptr &rc, float v, colorizer_mode_enum m, color c) {
colorizer_stop stop(v, m, c);
rc->add_stop(stop);
}
colorizer_stops const& get_stops(raster_colorizer_ptr & rc)
{
return rc->get_stops();
}
}
void export_raster_colorizer()
{
using namespace boost::python;
class_<raster_colorizer,raster_colorizer_ptr>("RasterColorizer",
"A Raster Colorizer object.",
init<colorizer_mode_enum, color>(args("default_mode","default_color"))
)
.def(init<>())
.add_property("default_color",
make_function(&raster_colorizer::get_default_color, return_value_policy<reference_existing_object>()),
&raster_colorizer::set_default_color,
"The default color for stops added without a color (mapnik.Color).\n")
.add_property("default_mode",
&raster_colorizer::get_default_mode_enum,
&raster_colorizer::set_default_mode_enum,
"The default mode (mapnik.ColorizerMode).\n"
"\n"
"If a stop is added without a mode, then it will inherit this default mode\n")
.add_property("stops",
make_function(get_stops,return_value_policy<reference_existing_object>()),
"The list of stops this RasterColorizer contains\n")
.add_property("epsilon",
&raster_colorizer::get_epsilon,
&raster_colorizer::set_epsilon,
"Comparison epsilon value for exact mode\n"
"\n"
"When comparing values in exact mode, values need only be within epsilon to match.\n")
.def("add_stop", add_stop,
(arg("ColorizerStop")),
"Add a colorizer stop to the raster colorizer.\n"
"\n"
"Usage:\n"
">>> colorizer = mapnik.RasterColorizer()\n"
">>> color = mapnik.Color(\"#0044cc\")\n"
">>> stop = mapnik.ColorizerStop(3, mapnik.COLORIZER_INHERIT, color)\n"
">>> colorizer.add_stop(stop)\n"
)
.def("add_stop", add_stop2,
(arg("value")),
"Add a colorizer stop to the raster colorizer, using the default mode and color.\n"
"\n"
"Usage:\n"
">>> default_color = mapnik.Color(\"#0044cc\")\n"
">>> colorizer = mapnik.RasterColorizer(mapnik.COLORIZER_LINEAR, default_color)\n"
">>> colorizer.add_stop(100)\n"
)
.def("add_stop", add_stop3,
(arg("value")),
"Add a colorizer stop to the raster colorizer, using the default mode.\n"
"\n"
"Usage:\n"
">>> default_color = mapnik.Color(\"#0044cc\")\n"
">>> colorizer = mapnik.RasterColorizer(mapnik.COLORIZER_LINEAR, default_color)\n"
">>> colorizer.add_stop(100, mapnik.Color(\"#123456\"))\n"
)
.def("add_stop", add_stop4,
(arg("value")),
"Add a colorizer stop to the raster colorizer, using the default color.\n"
"\n"
"Usage:\n"
">>> default_color = mapnik.Color(\"#0044cc\")\n"
">>> colorizer = mapnik.RasterColorizer(mapnik.COLORIZER_LINEAR, default_color)\n"
">>> colorizer.add_stop(100, mapnik.COLORIZER_EXACT)\n"
)
.def("add_stop", add_stop5,
(arg("value")),
"Add a colorizer stop to the raster colorizer.\n"
"\n"
"Usage:\n"
">>> default_color = mapnik.Color(\"#0044cc\")\n"
">>> colorizer = mapnik.RasterColorizer(mapnik.COLORIZER_LINEAR, default_color)\n"
">>> colorizer.add_stop(100, mapnik.COLORIZER_DISCRETE, mapnik.Color(\"#112233\"))\n"
)
.def("get_color", &raster_colorizer::get_color,
"Get the color assigned to a certain value in raster data.\n"
"\n"
"Usage:\n"
">>> colorizer = mapnik.RasterColorizer()\n"
">>> color = mapnik.Color(\"#0044cc\")\n"
">>> colorizer.add_stop(0, mapnik.COLORIZER_DISCRETE, mapnik.Color(\"#000000\"))\n"
">>> colorizer.add_stop(100, mapnik.COLORIZER_DISCRETE, mapnik.Color(\"#0E0A06\"))\n"
">>> colorizer.get_color(50)\n"
"Color('#070503')\n"
)
;
class_<colorizer_stops>("ColorizerStops",
"A RasterColorizer's collection of ordered color stops.\n"
"This class is not meant to be instantiated from python. However, "
"it can be accessed at a RasterColorizer's \"stops\" attribute for "
"introspection purposes",
no_init)
.def(vector_indexing_suite<colorizer_stops>())
;
enum_<colorizer_mode_enum>("ColorizerMode")
.value("COLORIZER_INHERIT", COLORIZER_INHERIT)
.value("COLORIZER_LINEAR", COLORIZER_LINEAR)
.value("COLORIZER_DISCRETE", COLORIZER_DISCRETE)
.value("COLORIZER_EXACT", COLORIZER_EXACT)
.export_values()
;
class_<colorizer_stop>("ColorizerStop",init<float, colorizer_mode_enum, color const&>(
"A Colorizer Stop object.\n"
"Create with a value, ColorizerMode, and Color\n"
"\n"
"Usage:"
">>> color = mapnik.Color(\"#fff000\")\n"
">>> stop= mapnik.ColorizerStop(42.42, mapnik.COLORIZER_LINEAR, color)\n"
))
.add_property("color",
make_function(&colorizer_stop::get_color, return_value_policy<reference_existing_object>()),
&colorizer_stop::set_color,
"The stop color (mapnik.Color).\n")
.add_property("value",
&colorizer_stop::get_value,
&colorizer_stop::set_value,
"The stop value.\n")
.add_property("label",
make_function(&colorizer_stop::get_label, return_value_policy<copy_const_reference>()),
&colorizer_stop::set_label,
"The stop label.\n")
.add_property("mode",
&colorizer_stop::get_mode_enum,
&colorizer_stop::set_mode_enum,
"The stop mode (mapnik.ColorizerMode).\n"
"\n"
"If this is COLORIZER_INHERIT then it will inherit the default mode\n"
" from the RasterColorizer it is added to.\n")
.def(self == self)
.def("__str__",&colorizer_stop::to_string)
;
}
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