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layer.cpp
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layer.cpp
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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 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/layer.hpp>
#include <mapnik/datasource.hpp>
#include <mapnik/datasource_cache.hpp>
// stl
#include <string>
#include <iostream>
namespace mapnik
{
layer::layer(std::string const& name, std::string const& srs)
: name_(name),
srs_(srs),
min_zoom_(0),
max_zoom_(std::numeric_limits<double>::max()),
active_(true),
queryable_(false),
clear_label_cache_(false),
cache_features_(false),
group_by_(""),
ds_() {}
layer::layer(const layer& rhs)
: name_(rhs.name_),
srs_(rhs.srs_),
min_zoom_(rhs.min_zoom_),
max_zoom_(rhs.max_zoom_),
active_(rhs.active_),
queryable_(rhs.queryable_),
clear_label_cache_(rhs.clear_label_cache_),
cache_features_(rhs.cache_features_),
group_by_(rhs.group_by_),
styles_(rhs.styles_),
ds_(rhs.ds_) {}
layer& layer::operator=(const layer& rhs)
{
layer tmp(rhs);
swap(tmp);
return *this;
}
bool layer::operator==(layer const& other) const
{
return (this == &other);
}
void layer::swap(const layer& rhs)
{
name_=rhs.name_;
srs_ = rhs.srs_;
min_zoom_=rhs.min_zoom_;
max_zoom_=rhs.max_zoom_;
active_=rhs.active_;
queryable_=rhs.queryable_;
clear_label_cache_ = rhs.clear_label_cache_;
cache_features_ = rhs.cache_features_;
group_by_ = rhs.group_by_;
styles_=rhs.styles_;
ds_=rhs.ds_;
}
layer::~layer() {}
void layer::set_name( std::string const& name)
{
name_ = name;
}
std::string const& layer::name() const
{
return name_;
}
void layer::set_srs(std::string const& srs)
{
srs_ = srs;
}
std::string const& layer::srs() const
{
return srs_;
}
void layer::add_style(std::string const& stylename)
{
styles_.push_back(stylename);
}
std::vector<std::string> const& layer::styles() const
{
return styles_;
}
std::vector<std::string> & layer::styles()
{
return styles_;
}
void layer::set_min_zoom(double min_zoom)
{
min_zoom_=min_zoom;
}
void layer::set_max_zoom(double max_zoom)
{
max_zoom_=max_zoom;
}
double layer::min_zoom() const
{
return min_zoom_;
}
double layer::max_zoom() const
{
return max_zoom_;
}
void layer::set_active(bool active)
{
active_=active;
}
bool layer::active() const
{
return active_;
}
bool layer::visible(double scale) const
{
return active() && scale >= min_zoom_ - 1e-6 && scale < max_zoom_ + 1e-6;
}
void layer::set_queryable(bool queryable)
{
queryable_=queryable;
}
bool layer::queryable() const
{
return queryable_;
}
datasource_ptr layer::datasource() const
{
return ds_;
}
void layer::set_datasource(datasource_ptr const& ds)
{
ds_ = ds;
}
box2d<double> layer::envelope() const
{
if (ds_) return ds_->envelope();
return box2d<double>();
}
void layer::set_clear_label_cache(bool clear)
{
clear_label_cache_ = clear;
}
bool layer::clear_label_cache() const
{
return clear_label_cache_;
}
void layer::set_cache_features(bool cache_features)
{
cache_features_ = cache_features;
}
bool layer::cache_features() const
{
return cache_features_;
}
void layer::set_group_by(std::string column)
{
group_by_ = column;
}
std::string layer::group_by() const
{
return group_by_;
}
}