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//------------------------------------------------------------------------------
// This file is part of the OpenStructure project <www.openstructure.org>
//
// Copyright (C) 2008-2020 by the OpenStructure authors
//
// 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 3.0 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 Street, Fifth Floor, Boston, MA 02110-1301 USA
//------------------------------------------------------------------------------
/*
Authors: Marco Biasini, Ansgar Philippsen
*/
#include <boost/python.hpp>
#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
using namespace boost::python;
#include <ost/message.hh>
#include <ost/gfx/gradient.hh>
using namespace ost;
using namespace ost::gfx;
namespace {
Gradient* make_gradient_d(const dict& d)
{
std::unique_ptr<Gradient> grad(new Gradient);
list keys = d.keys();
for(int i=0;i<len(keys);++i) {
extract<float> fex(keys[i]);
if(!fex.check()) {
throw Error("expected floats as keys");
}
float mark = fex();
Color col;
object val = d[keys[i]];
extract<Color> cex(val);
if(cex.check()) {
// use gfx.Color
col=cex();
} else {
// try simple sequence
if(len(val)!=3) {
throw Error("expected values of gfx.Color or float triplets");
}
try {
col=gfx::Color(extract<float>(val[0]),extract<float>(val[1]),extract<float>(val[2]));
} catch (...) {
throw Error("expected values of gfx.Color or float triplets");
}
}
grad->SetColorAt(mark,col);
}
return grad.release();
}
Gradient* make_gradient_l(const list& l)
{
std::unique_ptr<Gradient> grad(new Gradient);
float mf = len(l)<2 ? 0.0 : 1.0/static_cast<float>(len(l)-1);
for(int i=0;i<len(l);++i) {
float mark = static_cast<float>(i)*mf;
Color col;
object val = l[i];
extract<Color> cex(val);
if(cex.check()) {
// use gfx.Color
col=cex();
} else {
// try simple sequence
if(len(val)!=3) {
throw Error("expected values of gfx.Color or float triplets");
}
try {
col=gfx::RGB(extract<float>(val[0]),extract<float>(val[1]),extract<float>(val[2]));
} catch (...) {
throw Error("expected values of gfx.Color float triplets");
}
}
grad->SetColorAt(mark,col);
}
return grad.release();
}
std::string sl_repr(const Gradient::StopList& sl) {
std::ostringstream m;
m << "[";
for(size_t i=0;i<sl.size();++i) {
Color c = sl[i].color;
m << "(" << sl[i].t << "," << "gfx.RGB(" << c[0] << "," << c[1] << "," << c[2] << "))";
if(i<sl.size()-1) m << ",";
}
m << "]";
return m.str();
}
}
void export_gradient()
{
class_<Gradient>("Gradient", init<>())
.def(init<const String&>())
.def("__init__", make_constructor(make_gradient_d))
.def("__init__", make_constructor(make_gradient_l))
.def("SetColorAt", &Gradient::SetColorAt)
.def("GetColorAt", &Gradient::GetColorAt)
.def("GetStops", &Gradient::GetStops)
.add_property("stops", &Gradient::GetStops)
.def("GradientToInfo", &Gradient::GradientToInfo)
.def("GradientFromInfo", &Gradient::GradientFromInfo).staticmethod("GradientFromInfo")
.add_property("hsv_mode",&Gradient::GetHSVMode,&Gradient::SetHSVMode)
;
implicitly_convertible<String, Gradient>();
class_<Gradient::StopList>("GradientStopList", init<>())
.def(vector_indexing_suite<Gradient::StopList>())
.def("__repr__",sl_repr)
;
class_<Gradient::Stop>("GradientStop", init<>())
.def("GetColor", &Gradient::Stop::GetColor)
.add_property("color", &Gradient::Stop::GetColor)
.def("GetRel", &Gradient::Stop::GetRel)
.add_property("rel", &Gradient::Stop::GetRel)
;
}
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