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mapnik_style.cpp
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109 lines (96 loc) · 3.87 KB
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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2024 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
*
*****************************************************************************/
// mapnik
#include <mapnik/config.hpp>
#include <mapnik/value/error.hpp>
#include <mapnik/rule.hpp>
#include <mapnik/feature_type_style.hpp>
#include <mapnik/image_filter_types.hpp> // generate_image_filters
//pybind11
#include <pybind11/pybind11.h>
#include <pybind11/stl.h>
#include <pybind11/stl_bind.h>
namespace py = pybind11;
using mapnik::feature_type_style;
using mapnik::filter_mode_enum;
using mapnik::rules;
using mapnik::rule;
PYBIND11_MAKE_OPAQUE(rules);
std::string get_image_filters(feature_type_style & style)
{
std::string filters_str;
std::back_insert_iterator<std::string> sink(filters_str);
generate_image_filters(sink, style.image_filters());
return filters_str;
}
void set_image_filters(feature_type_style & style, std::string const& filters)
{
std::vector<mapnik::filter::filter_type> new_filters;
bool result = parse_image_filters(filters, new_filters);
if (!result)
{
throw mapnik::value_error("failed to parse image-filters: '" + filters + "'");
}
style.image_filters() = std::move(new_filters);
}
py::object get_filter_mode(feature_type_style const& style)
{
return py::cast(filter_mode_enum(style.get_filter_mode()));
}
void set_filter_mode(feature_type_style& style, filter_mode_enum mode)
{
style.set_filter_mode(mapnik::filter_mode_e(mode));
}
void export_style(py::module const& m)
{
py::enum_<mapnik::filter_mode_enum>(m, "filter_mode")
.value("ALL",mapnik::filter_mode_enum::FILTER_ALL)
.value("FIRST",mapnik::filter_mode_enum::FILTER_FIRST)
;
py::bind_vector<rules>(m, "Rules", py::module_local());
py::class_<feature_type_style>(m, "Style")
.def(py::init<>(), "default style constructor")
.def_property_readonly("rules",
&feature_type_style::get_rules,
"Rules assigned to this style.\n")
.def_property("filter_mode",
&get_filter_mode,
&set_filter_mode,
"Set/get the filter mode of the style")
.def_property("opacity",
&feature_type_style::get_opacity,
&feature_type_style::set_opacity,
"Set/get the opacity of the style")
.def_property("comp_op",
&feature_type_style::comp_op,
&feature_type_style::set_comp_op,
"Set/get the comp-op (composite operation) of the style")
.def_property("image_filters_inflate",
&feature_type_style::image_filters_inflate,
&feature_type_style::image_filters_inflate,
"Set/get the image_filters_inflate property of the style")
.def_property("image_filters",
get_image_filters,
set_image_filters,
"Set/get image filters for the style")
;
}