Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

240 lines (201 sloc) 5.654 kb
/*****************************************************************************
*
* 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/rule.hpp>
#include <mapnik/raster_colorizer.hpp>
namespace {
struct deepcopy_symbolizer : public boost::static_visitor<>
{
void operator () (mapnik::raster_symbolizer & sym) const
{
mapnik::raster_colorizer_ptr old_colorizer = sym.get_colorizer();
mapnik::raster_colorizer_ptr new_colorizer = mapnik::raster_colorizer_ptr();
new_colorizer->set_stops(old_colorizer->get_stops());
new_colorizer->set_default_mode(old_colorizer->get_default_mode());
new_colorizer->set_default_color(old_colorizer->get_default_color());
new_colorizer->set_epsilon(old_colorizer->get_epsilon());
sym.set_colorizer(new_colorizer);
}
void operator () (mapnik::text_symbolizer & sym) const
{
copy_text_ptr(sym);
}
void operator () (mapnik::shield_symbolizer & sym) const
{
copy_text_ptr(sym);
}
void operator () (mapnik::building_symbolizer & sym) const
{
copy_height_ptr(sym);
}
template <typename T> void operator () (T &sym) const
{
boost::ignore_unused_variable_warning(sym);
}
template <class T>
void copy_text_ptr(T & sym) const
{
boost::ignore_unused_variable_warning(sym);
MAPNIK_LOG_WARN(rule) << "rule: deep copying TextSymbolizers is broken!";
}
template <class T>
void copy_height_ptr(T & sym) const
{
std::string height_expr = mapnik::to_expression_string(*sym.height());
sym.set_height(mapnik::parse_expression(height_expr,"utf8"));
}
};
}
namespace mapnik
{
rule::rule()
: name_(),
min_scale_(0),
max_scale_(std::numeric_limits<double>::infinity()),
syms_(),
filter_(boost::make_shared<mapnik::expr_node>(true)),
else_filter_(false),
also_filter_(false) {}
rule::rule(std::string const& name,
double min_scale_denominator,
double max_scale_denominator)
: name_(name),
min_scale_(min_scale_denominator),
max_scale_(max_scale_denominator),
syms_(),
filter_(boost::make_shared<mapnik::expr_node>(true)),
else_filter_(false),
also_filter_(false) {}
rule::rule(const rule& rhs, bool deep_copy)
: name_(rhs.name_),
min_scale_(rhs.min_scale_),
max_scale_(rhs.max_scale_),
syms_(rhs.syms_),
filter_(rhs.filter_),
else_filter_(rhs.else_filter_),
also_filter_(rhs.also_filter_)
{
if (deep_copy) {
std::string expr = to_expression_string(*filter_);
filter_ = parse_expression(expr,"utf8");
symbolizers::const_iterator it = syms_.begin();
symbolizers::const_iterator end = syms_.end();
for(; it != end; ++it)
{
boost::apply_visitor(deepcopy_symbolizer(),*it);
}
}
}
rule& rule::operator=(rule const& rhs)
{
rule tmp(rhs);
swap(tmp);
return *this;
}
bool rule::operator==(rule const& other)
{
return (this == &other);
}
void rule::set_max_scale(double scale)
{
max_scale_=scale;
}
double rule::get_max_scale() const
{
return max_scale_;
}
void rule::set_min_scale(double scale)
{
min_scale_=scale;
}
double rule::get_min_scale() const
{
return min_scale_;
}
void rule::set_name(std::string const& name)
{
name_=name;
}
std::string const& rule::get_name() const
{
return name_;
}
void rule::append(symbolizer const& sym)
{
syms_.push_back(sym);
}
void rule::remove_at(size_t index)
{
if (index < syms_.size())
{
syms_.erase(syms_.begin()+index);
}
}
rule::symbolizers const& rule::get_symbolizers() const
{
return syms_;
}
rule::symbolizers::const_iterator rule::begin() const
{
return syms_.begin();
}
rule::symbolizers::const_iterator rule::end() const
{
return syms_.end();
}
rule::symbolizers::iterator rule::begin()
{
return syms_.begin();
}
rule::symbolizers::iterator rule::end()
{
return syms_.end();
}
void rule::set_filter(expression_ptr const& filter)
{
filter_=filter;
}
expression_ptr const& rule::get_filter() const
{
return filter_;
}
void rule::set_else(bool else_filter)
{
else_filter_=else_filter;
}
bool rule::has_else_filter() const
{
return else_filter_;
}
void rule::set_also(bool also_filter)
{
also_filter_=also_filter;
}
bool rule::has_also_filter() const
{
return also_filter_;
}
bool rule::active(double scale) const
{
return ( scale >= min_scale_ - 1e-6 && scale < max_scale_ + 1e-6);
}
}
Jump to Line
Something went wrong with that request. Please try again.