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/*****************************************************************************
*
* This file is part of Mapnik (c+mapping toolkit)
*
* Copyright (C) 2006 Artem Pavlenko, Jean-Francois Doyon
*
* 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
*
*****************************************************************************/
//$Id$
// boost
#include <boost/python.hpp>
// mapnik
#include <mapnik/stroke.hpp>
#include "mapnik_enumeration.hpp"
using namespace mapnik;
namespace {
using namespace boost::python;
list get_dashes_list(const stroke& stroke)
{
list l;
if (stroke.has_dash()) {
mapnik::dash_array const& dash = stroke.get_dash_array();
mapnik::dash_array::const_iterator iter = dash.begin();
mapnik::dash_array::const_iterator end = dash.end();
for (; iter != end; ++iter) {
l.append(make_tuple(iter->first, iter->second));
}
}
return l;
}
}
struct stroke_pickle_suite : boost::python::pickle_suite
{
static boost::python::tuple
getinitargs(const stroke& s)
{
return boost::python::make_tuple(s.get_color(),s.get_width());
}
static boost::python::tuple
getstate(const stroke& s)
{
boost::python::list dashes = get_dashes_list(s);
return boost::python::make_tuple(s.get_opacity(),
dashes,
s.get_line_cap(),
s.get_line_join(),
s.get_gamma());
}
static void
setstate (stroke& s, boost::python::tuple state)
{
using namespace boost::python;
if (len(state) != 5)
{
PyErr_SetObject(PyExc_ValueError,
("expected 5-item tuple in call to __setstate__; got %s"
% state).ptr()
);
throw_error_already_set();
}
s.set_opacity(extract<float>(state[0]));
if (state[1])
{
list dashes = extract<list>(state[1]);
for(boost::python::ssize_t i=0; i<len(dashes); i++) {
double ds1 = extract<double>(dashes[i][0]);
double ds2 = extract<double>(dashes[i][1]);
s.add_dash(ds1,ds2);
}
}
s.set_line_cap(extract<line_cap_e>(state[2]));
s.set_line_join(extract<line_join_e>(state[3]));
s.set_gamma(extract<double>(state[4]));
}
};
void export_stroke ()
{
using namespace boost::python;
enumeration_<line_cap_e>("line_cap",
"The possible values for a line cap used when drawing\n"
"with a stroke.\n")
.value("BUTT_CAP",BUTT_CAP)
.value("SQUARE_CAP",SQUARE_CAP)
.value("ROUND_CAP",ROUND_CAP)
;
enumeration_<line_join_e>("line_join",
"The possible values for the line joining mode\n"
"when drawing with a stroke.\n")
.value("MITER_JOIN",MITER_JOIN)
.value("MITER_REVERT_JOIN",MITER_REVERT_JOIN)
.value("ROUND_JOIN",ROUND_JOIN)
.value("BEVEL_JOIN",BEVEL_JOIN)
;
class_<stroke>("Stroke",init<>(
"Creates a new default black stroke with the width of 1.\n"))
.def(init<color,float>(
(arg("color"),arg("width")),
"Creates a new stroke object with a specified color and width.\n")
)
.def_pickle(stroke_pickle_suite())
.add_property("color",make_function
(&stroke::get_color,return_value_policy<copy_const_reference>()),
&stroke::set_color,
"Gets or sets the stroke color.\n"
"Returns a new Color object on retrieval.\n")
.add_property("width",
&stroke::get_width,
&stroke::set_width,
"Gets or sets the stroke width in pixels.\n")
.add_property("opacity",
&stroke::get_opacity,
&stroke::set_opacity,
"Gets or sets the opacity of this stroke.\n"
"The value is a float between 0 and 1.\n")
.add_property("gamma",
&stroke::get_gamma,
&stroke::set_gamma,
"Gets or sets the gamma of this stroke.\n"
"The value is a float between 0 and 1.\n")
.add_property("line_cap",
&stroke::get_line_cap,
&stroke::set_line_cap,
"Gets or sets the line cap of this stroke.\n")
.add_property("line_join",
&stroke::get_line_join,
&stroke::set_line_join,
"Returns the line join mode of this stroke.\n")
// todo consider providing a single get/set property
.def("add_dash",&stroke::add_dash,
(arg("length"),arg("gap")),
"Adds a dash segment to the dash patterns of this stroke.\n")
.def("get_dashes", get_dashes_list,
"Returns the list of dash segments for this stroke.\n")
.add_property("dash_offset",
&stroke::dash_offset,
&stroke::set_dash_offset,
"Gets or sets dash offset of this stroke.\n")
;
}
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