584 lines
22 KiB
C++
584 lines
22 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2012 Artem Pavlenko, Jean-Francois Doyon
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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#include "boost_std_shared_shim.hpp"
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#include <boost/python.hpp>
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#include <boost/python/stl_iterator.hpp>
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#include <boost/noncopyable.hpp>
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#include <mapnik/text/text_properties.hpp>
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#include <mapnik/text/placements/simple.hpp>
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#include <mapnik/text/placements/list.hpp>
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#include <mapnik/text/formatting/text.hpp>
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#include <mapnik/text/formatting/list.hpp>
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#include <mapnik/text/formatting/format.hpp>
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#include <mapnik/text/formatting/layout.hpp>
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#include <mapnik/text/layout.hpp>
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#include <mapnik/symbolizer.hpp>
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#include "mapnik_enumeration.hpp"
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#include "mapnik_threads.hpp"
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using namespace mapnik;
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/* Notes:
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Overriding functions in inherited classes:
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boost.python documentation doesn't really tell you how to do it.
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But this helps:
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http://www.gamedev.net/topic/446225-inheritance-in-boostpython/
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register_ptr_to_python is required for wrapped classes, but not for unwrapped.
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Functions don't have to be members of the class, but can also be
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normal functions taking a ref to the class as first parameter.
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*/
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namespace {
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using namespace boost::python;
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// This class works around a feature in boost python.
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// See http://osdir.com/ml/python.c++/2003-11/msg00158.html
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template <typename T,
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typename X1 = boost::python::detail::not_specified,
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typename X2 = boost::python::detail::not_specified,
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typename X3 = boost::python::detail::not_specified>
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class class_with_converter : public boost::python::class_<T, X1, X2, X3>
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{
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public:
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using self = class_with_converter<T,X1,X2,X3>;
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// Construct with the class name, with or without docstring, and default __init__() function
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class_with_converter(char const* name, char const* doc = 0) : boost::python::class_<T, X1, X2, X3>(name, doc) { }
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// Construct with class name, no docstring, and an uncallable __init__ function
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class_with_converter(char const* name, boost::python::no_init_t y) : boost::python::class_<T, X1, X2, X3>(name, y) { }
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// Construct with class name, docstring, and an uncallable __init__ function
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class_with_converter(char const* name, char const* doc, boost::python::no_init_t y) : boost::python::class_<T, X1, X2, X3>(name, doc, y) { }
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// Construct with class name and init<> function
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template <class DerivedT> class_with_converter(char const* name, boost::python::init_base<DerivedT> const& i)
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: boost::python::class_<T, X1, X2, X3>(name, i) { }
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// Construct with class name, docstring and init<> function
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template <class DerivedT>
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inline class_with_converter(char const* name, char const* doc, boost::python::init_base<DerivedT> const& i)
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: boost::python::class_<T, X1, X2, X3>(name, doc, i) { }
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template <class D>
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self& def_readwrite_convert(char const* name, D const& d, char const* /*doc*/=0)
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{
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this->add_property(name,
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boost::python::make_getter(d, boost::python::return_value_policy<boost::python::return_by_value>()),
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boost::python::make_setter(d, boost::python::default_call_policies()));
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return *this;
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}
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};
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boost::python::tuple get_displacement(text_layout_properties const& t)
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{
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return boost::python::make_tuple(0.0,0.0);// FIXME t.displacement.x, t.displacement.y);
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}
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void set_displacement(text_layout_properties &t, boost::python::tuple arg)
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{
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if (len(arg) != 2)
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{
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PyErr_SetObject(PyExc_ValueError,
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("expected 2-item tuple in call to set_displacement; got %s"
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% arg).ptr()
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);
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throw_error_already_set();
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}
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double x = extract<double>(arg[0]);
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double y = extract<double>(arg[1]);
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//t.displacement.set(x, y); FIXME
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}
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/*
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struct NodeWrap
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: formatting::node, wrapper<formatting::node>
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{
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NodeWrap()
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: formatting::node(), wrapper<formatting::node>() {}
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void apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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python_block_auto_unblock b;
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this->get_override("apply")(ptr(&p), ptr(&feature), ptr(&vars), ptr(&output));
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}
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virtual void add_expressions(expression_set &output) const
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{
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override o = this->get_override("add_expressions");
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if (o)
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{
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python_block_auto_unblock b;
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o(ptr(&output));
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} else
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{
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formatting::node::add_expressions(output);
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}
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}
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void default_add_expressions(expression_set &output) const
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{
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formatting::node::add_expressions(output);
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}
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};
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*/
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/*
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struct TextNodeWrap
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: formatting::text_node, wrapper<formatting::text_node>
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{
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TextNodeWrap(expression_ptr expr)
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: formatting::text_node(expr), wrapper<formatting::text_node>() {}
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TextNodeWrap(std::string expr_text)
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: formatting::text_node(expr_text), wrapper<formatting::text_node>() {}
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virtual void apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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if(override o = this->get_override("apply"))
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{
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python_block_auto_unblock b;
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o(ptr(&p), ptr(&feature), ptr(&vars), ptr(&output));
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}
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else
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{
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formatting::text_node::apply(p, feature, vars, output);
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}
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}
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void default_apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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formatting::text_node::apply(p, feature, vars, output);
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}
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};
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*/
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/*
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struct FormatNodeWrap
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: formatting::format_node, wrapper<formatting::format_node>
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{
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virtual void apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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if(override o = this->get_override("apply"))
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{
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python_block_auto_unblock b;
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o(ptr(&p), ptr(&feature), ptr(&vars), ptr(&output));
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}
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else
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{
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formatting::format_node::apply(p, feature, vars ,output);
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}
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}
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void default_apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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formatting::format_node::apply(p, feature, vars, output);
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}
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};
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struct ExprFormatWrap: formatting::expression_format, wrapper<formatting::expression_format>
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{
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virtual void apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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if(override o = this->get_override("apply"))
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{
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python_block_auto_unblock b;
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o(ptr(&p), ptr(&feature), ptr(&vars), ptr(&output));
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}
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else
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{
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formatting::expression_format::apply(p, feature, vars, output);
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}
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}
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void default_apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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formatting::expression_format::apply(p, feature, vars, output);
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}
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};
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struct LayoutNodeWrap: formatting::layout_node, wrapper<formatting::layout_node>
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{
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virtual void apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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if(override o = this->get_override("apply"))
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{
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python_block_auto_unblock b;
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o(ptr(&p), ptr(&feature), ptr(&vars), ptr(&output));
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}
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else
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{
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formatting::layout_node::apply(p, feature, vars, output);
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}
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}
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void default_apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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formatting::layout_node::apply(p, feature, vars, output);
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}
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};
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struct ListNodeWrap: formatting::list_node, wrapper<formatting::list_node>
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{
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//Default constructor
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ListNodeWrap() : formatting::list_node(), wrapper<formatting::list_node>()
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{
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}
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//Special constructor: Takes a python sequence as its argument
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ListNodeWrap(object l) : formatting::list_node(), wrapper<formatting::list_node>()
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{
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stl_input_iterator<formatting::node_ptr> begin(l), end;
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while (begin != end)
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{
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children_.push_back(*begin);
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++begin;
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}
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}
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// TODO: Add constructor taking variable number of arguments.
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http://wiki.python.org/moin/boost.python/HowTo#A.22Raw.22_function
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virtual void apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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if(override o = this->get_override("apply"))
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{
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python_block_auto_unblock b;
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o(ptr(&p), ptr(&feature), ptr(&vars), ptr(&output));
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}
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else
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{
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formatting::list_node::apply(p, feature, vars, output);
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}
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}
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void default_apply(char_properties_ptr p, feature_impl const& feature, attributes const& vars, text_layout &output) const
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{
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formatting::list_node::apply(p, feature, vars, output);
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}
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inline void IndexError(){
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PyErr_SetString(PyExc_IndexError, "Index out of range");
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throw_error_already_set();
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}
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unsigned get_length()
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{
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return children_.size();
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}
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formatting::node_ptr get_item(int i)
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{
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if (i < 0) i+= children_.size();
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if (i < static_cast<int>(children_.size())) return children_[i];
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IndexError();
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return formatting::node_ptr(); //Avoid compiler warning
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}
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void set_item(int i, formatting::node_ptr ptr)
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{
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if (i < 0) i+= children_.size();
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if (i < static_cast<int>(children_.size())) children_[i] = ptr;
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IndexError();
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}
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void append(formatting::node_ptr ptr)
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{
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children_.push_back(ptr);
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}
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};
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*/
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struct TextPlacementsWrap: text_placements, wrapper<text_placements>
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{
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text_placement_info_ptr get_placement_info(double scale_factor_) const
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{
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python_block_auto_unblock b;
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//return this->get_override("get_placement_info")();
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return text_placement_info_ptr();
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}
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};
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struct TextPlacementInfoWrap: text_placement_info, wrapper<text_placement_info>
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{
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TextPlacementInfoWrap(text_placements const* parent,
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double scale_factor_)
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: text_placement_info(parent, scale_factor_)
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{
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}
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bool next()
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{
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python_block_auto_unblock b;
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return this->get_override("next")();
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}
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};
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void insert_expression(expression_set *set, expression_ptr p)
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{
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set->insert(p);
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}
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/*
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char_properties_ptr get_format(text_symbolizer const& sym)
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{
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return sym.get_placement_options()->defaults.format;
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}
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void set_format(text_symbolizer const& sym, char_properties_ptr format)
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{
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sym.get_placement_options()->defaults.format = format;
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}
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text_symbolizer_properties & get_properties(text_symbolizer const& sym)
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{
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return sym.get_placement_options()->defaults;
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}
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void set_properties(text_symbolizer const& sym, text_symbolizer_properties & defaults)
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{
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sym.get_placement_options()->defaults = defaults;
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}
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*/
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}
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void export_text_placement()
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{
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using namespace boost::python;
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enumeration_<label_placement_e>("label_placement")
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.value("LINE_PLACEMENT",LINE_PLACEMENT)
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.value("POINT_PLACEMENT",POINT_PLACEMENT)
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.value("VERTEX_PLACEMENT",VERTEX_PLACEMENT)
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.value("INTERIOR_PLACEMENT",INTERIOR_PLACEMENT)
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;
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enumeration_<vertical_alignment_e>("vertical_alignment")
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.value("TOP",V_TOP)
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.value("MIDDLE",V_MIDDLE)
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.value("BOTTOM",V_BOTTOM)
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.value("AUTO",V_AUTO)
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;
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enumeration_<horizontal_alignment_e>("horizontal_alignment")
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.value("LEFT",H_LEFT)
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.value("MIDDLE",H_MIDDLE)
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.value("RIGHT",H_RIGHT)
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.value("AUTO",H_AUTO)
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;
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enumeration_<justify_alignment_e>("justify_alignment")
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.value("LEFT",J_LEFT)
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.value("MIDDLE",J_MIDDLE)
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.value("RIGHT",J_RIGHT)
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.value("AUTO", J_AUTO)
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;
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enumeration_<text_transform_e>("text_transform")
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.value("NONE",NONE)
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.value("UPPERCASE",UPPERCASE)
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.value("LOWERCASE",LOWERCASE)
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.value("CAPITALIZE",CAPITALIZE)
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;
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enumeration_<halo_rasterizer_e>("halo_rasterizer")
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.value("FULL",HALO_RASTERIZER_FULL)
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.value("FAST",HALO_RASTERIZER_FAST)
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;
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class_<text_symbolizer>("TextSymbolizer",
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init<>())
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;
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class_with_converter<text_symbolizer_properties>
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("TextSymbolizerProperties")
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.def_readwrite_convert("label_placement", &text_symbolizer_properties::label_placement)
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.def_readwrite_convert("upright", &text_symbolizer_properties::upright)
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.def_readwrite("label_spacing", &text_symbolizer_properties::label_spacing)
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.def_readwrite("label_position_tolerance", &text_symbolizer_properties::label_position_tolerance)
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.def_readwrite("avoid_edges", &text_symbolizer_properties::avoid_edges)
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.def_readwrite("minimum_distance", &text_symbolizer_properties::minimum_distance)
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.def_readwrite("minimum_padding", &text_symbolizer_properties::minimum_padding)
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.def_readwrite("minimum_path_length", &text_symbolizer_properties::minimum_path_length)
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.def_readwrite("maximum_angle_char_delta", &text_symbolizer_properties::max_char_angle_delta)
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.def_readwrite("force_odd_labels", &text_symbolizer_properties::force_odd_labels)
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.def_readwrite("allow_overlap", &text_symbolizer_properties::allow_overlap)
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.def_readwrite("largest_bbox_only", &text_symbolizer_properties::largest_bbox_only)
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.def_readwrite("layout_defaults", &text_symbolizer_properties::layout_defaults)
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//.def_readwrite("format", &text_symbolizer_properties::format)
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.add_property ("format_tree",
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&text_symbolizer_properties::format_tree,
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&text_symbolizer_properties::set_format_tree);
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/* from_xml, to_xml operate on mapnik's internal XML tree and don't make sense in python.
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add_expressions isn't useful in python either. The result is only needed by
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attribute_collector (which isn't exposed in python) and
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it just calls add_expressions of the associated formatting tree.
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set_old_style expression is just a compatibility wrapper and doesn't need to be exposed in python. */
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;
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class_with_converter<text_layout_properties>
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("TextLayoutProperties")
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.def_readwrite_convert("horizontal_alignment", &text_layout_properties::halign)
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.def_readwrite_convert("justify_alignment", &text_layout_properties::jalign)
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.def_readwrite_convert("vertical_alignment", &text_layout_properties::valign)
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.def_readwrite("text_ratio", &text_layout_properties::text_ratio)
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.def_readwrite("wrap_width", &text_layout_properties::wrap_width)
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.def_readwrite("wrap_before", &text_layout_properties::wrap_before)
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.def_readwrite("orientation", &text_layout_properties::orientation)
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.def_readwrite("rotate_displacement", &text_layout_properties::rotate_displacement)
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.add_property("displacement", &get_displacement, &set_displacement);
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class_with_converter<char_properties>
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("CharProperties")
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.def_readwrite_convert("text_transform", &char_properties::text_transform)
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.def_readwrite_convert("fontset", &char_properties::fontset)
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.def(init<char_properties const&>()) //Copy constructor
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.def_readwrite("face_name", &char_properties::face_name)
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.def_readwrite("text_size", &char_properties::text_size)
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.def_readwrite("character_spacing", &char_properties::character_spacing)
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.def_readwrite("line_spacing", &char_properties::line_spacing)
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.def_readwrite("text_opacity", &char_properties::text_opacity)
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.def_readwrite("wrap_char", &char_properties::wrap_char)
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.def_readwrite("wrap_character", &char_properties::wrap_char)
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.def_readwrite("fill", &char_properties::fill)
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.def_readwrite("halo_fill", &char_properties::halo_fill)
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.def_readwrite("halo_radius", &char_properties::halo_radius)
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/* from_xml, to_xml operate on mapnik's internal XML tree and don't make sense in python.*/
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;
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|
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class_<TextPlacementsWrap,
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std::shared_ptr<TextPlacementsWrap>,
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boost::noncopyable>
|
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("TextPlacements")
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.def_readwrite("defaults", &text_placements::defaults)
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//.def("get_placement_info", pure_virtual(&text_placements::get_placement_info))
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/* TODO: add_expressions() */
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;
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register_ptr_to_python<std::shared_ptr<text_placements> >();
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|
|
|
class_<TextPlacementInfoWrap,
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|
std::shared_ptr<TextPlacementInfoWrap>,
|
|
boost::noncopyable>
|
|
("TextPlacementInfo",
|
|
init<text_placements const*, double>())
|
|
.def("next", pure_virtual(&text_placement_info::next))
|
|
.def_readwrite("properties", &text_placement_info::properties)
|
|
.def_readwrite("scale_factor", &text_placement_info::scale_factor)
|
|
;
|
|
register_ptr_to_python<std::shared_ptr<text_placement_info> >();
|
|
|
|
|
|
class_<expression_set,std::shared_ptr<expression_set>,
|
|
boost::noncopyable>("ExpressionSet")
|
|
.def("insert", &insert_expression);
|
|
;
|
|
|
|
/*
|
|
class_<formatting::node,std::shared_ptr<formatting::node>,
|
|
boost::noncopyable>("FormattingNode")
|
|
.def("apply", pure_virtual(&formatting::node::apply))
|
|
.def("add_expressions", pure_virtual(&formatting::node::add_expressions))
|
|
.def("to_xml", pure_virtual(&formatting::node::to_xml))
|
|
;
|
|
|
|
register_ptr_to_python<std::shared_ptr<formatting::node> >();
|
|
|
|
class_<formatting::text_node,
|
|
std::shared_ptr<formatting::text_node>,
|
|
bases<formatting::node>,boost::noncopyable>("FormattingText", init<expression_ptr>())
|
|
.def(init<std::string>())
|
|
.def("apply", &formatting::text_node::apply)//, &TextNodeWrap::default_apply)
|
|
.add_property("text",&formatting::text_node::get_text, &formatting::text_node::set_text)
|
|
;
|
|
|
|
register_ptr_to_python<std::shared_ptr<formatting::text_node> >();
|
|
|
|
class_with_converter<FormatNodeWrap,
|
|
std::shared_ptr<FormatNodeWrap>,
|
|
bases<formatting::node>,
|
|
boost::noncopyable>
|
|
("FormattingFormat")
|
|
.def_readwrite_convert("text_size", &formatting::format_node::text_size)
|
|
.def_readwrite_convert("face_name", &formatting::format_node::face_name)
|
|
.def_readwrite_convert("character_spacing", &formatting::format_node::character_spacing)
|
|
.def_readwrite_convert("line_spacing", &formatting::format_node::line_spacing)
|
|
.def_readwrite_convert("text_opacity", &formatting::format_node::text_opacity)
|
|
.def_readwrite_convert("wrap_char", &formatting::format_node::wrap_char)
|
|
.def_readwrite_convert("wrap_character", &formatting::format_node::wrap_char)
|
|
.def_readwrite_convert("text_transform", &formatting::format_node::text_transform)
|
|
.def_readwrite_convert("fill", &formatting::format_node::fill)
|
|
.def_readwrite_convert("halo_fill", &formatting::format_node::halo_fill)
|
|
.def_readwrite_convert("halo_radius", &formatting::format_node::halo_radius)
|
|
.def("apply", &formatting::format_node::apply, &FormatNodeWrap::default_apply)
|
|
.add_property("child",
|
|
&formatting::format_node::get_child,
|
|
&formatting::format_node::set_child)
|
|
;
|
|
register_ptr_to_python<std::shared_ptr<formatting::format_node> >();
|
|
|
|
class_<ListNodeWrap,
|
|
std::shared_ptr<ListNodeWrap>,
|
|
bases<formatting::node>,
|
|
boost::noncopyable>
|
|
("FormattingList", init<>())
|
|
.def(init<list>())
|
|
.def("append", &formatting::list_node::push_back)
|
|
.def("apply", &formatting::list_node::apply, &ListNodeWrap::default_apply)
|
|
.def("__len__", &ListNodeWrap::get_length)
|
|
.def("__getitem__", &ListNodeWrap::get_item)
|
|
.def("__setitem__", &ListNodeWrap::set_item)
|
|
.def("append", &ListNodeWrap::append)
|
|
;
|
|
|
|
register_ptr_to_python<std::shared_ptr<formatting::list_node> >();
|
|
|
|
class_<ExprFormatWrap,
|
|
std::shared_ptr<ExprFormatWrap>,
|
|
bases<formatting::node>,
|
|
boost::noncopyable>
|
|
("FormattingExpressionFormat")
|
|
.def_readwrite("text_size", &formatting::expression_format::text_size)
|
|
.def_readwrite("face_name", &formatting::expression_format::face_name)
|
|
.def_readwrite("character_spacing", &formatting::expression_format::character_spacing)
|
|
.def_readwrite("line_spacing", &formatting::expression_format::line_spacing)
|
|
.def_readwrite("text_opacity", &formatting::expression_format::text_opacity)
|
|
.def_readwrite("wrap_char", &formatting::expression_format::wrap_char)
|
|
.def_readwrite("wrap_character", &formatting::expression_format::wrap_char)
|
|
.def_readwrite("fill", &formatting::expression_format::fill)
|
|
.def_readwrite("halo_fill", &formatting::expression_format::halo_fill)
|
|
.def_readwrite("halo_radius", &formatting::expression_format::halo_radius)
|
|
.def("apply", &formatting::expression_format::apply, &ExprFormatWrap::default_apply)
|
|
.add_property("child",
|
|
&formatting::expression_format::get_child,
|
|
&formatting::expression_format::set_child)
|
|
;
|
|
register_ptr_to_python<std::shared_ptr<formatting::expression_format> >();
|
|
*/
|
|
//TODO: registry
|
|
}
|