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refactor symbolizer deepcopy semantics into internal structure

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This commit is contained in:
Artem Pavlenko 2011-12-19 13:30:30 +00:00
parent b62cebf9b5
commit 145362c6f7
1 changed files with 108 additions and 70 deletions
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178
include/mapnik/rule.hpp
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@ -39,6 +39,7 @@
#include <mapnik/expression_string.hpp>
// boost
#include <boost/concept_check.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/make_shared.hpp>
#include <boost/variant.hpp>
@ -125,6 +126,8 @@ typedef boost::variant<point_symbolizer,
glyph_symbolizer> symbolizer;
class rule
{
public:
@ -138,6 +141,104 @@ private:
expression_ptr filter_;
bool else_filter_;
bool also_filter_;
struct deepcopy_symbolizer : public boost::static_visitor<>
{
void operator () (markers_symbolizer & sym) const
{
copy_path_ptr(sym);
}
void operator () (point_symbolizer & sym) const
{
copy_path_ptr(sym);
}
void operator () (polygon_pattern_symbolizer & sym) const
{
copy_path_ptr(sym);
}
void operator () (line_pattern_symbolizer & sym) const
{
copy_path_ptr(sym);
}
void operator () (raster_symbolizer & sym) const
{
raster_colorizer_ptr old_colorizer = sym.get_colorizer();
raster_colorizer_ptr new_colorizer = 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 () (text_symbolizer & sym) const
{
copy_text_ptr(sym);
}
void operator () (shield_symbolizer & sym) const
{
copy_path_ptr(sym);
copy_text_ptr(sym);
}
void operator () (building_symbolizer & sym) const
{
copy_height_ptr(sym);
}
template <typename T> void operator () (T &sym) const
{
boost::ignore_unused_variable_warning(sym);
}
private:
template <class T>
void copy_path_ptr(T & sym) const
{
std::string path = path_processor_type::to_string(*sym.get_filename());
sym.set_filename( parse_path(path) );
}
template <class T>
void copy_text_ptr(T & sym) const
{
std::string name = to_expression_string(*sym.get_name());
sym.set_name( parse_expression(name) );
// FIXME - orientation doesn't appear to be initialized in constructor?
//std::string orientation = to_expression_string(*sym->get_orientation());
//sym->set_orientation( parse_expression(orientation) );
float text_size = sym.get_text_size();
position displace = sym.get_displacement();
vertical_alignment_e valign = sym.get_vertical_alignment();
horizontal_alignment_e halign = sym.get_horizontal_alignment();
justify_alignment_e jalign = sym.get_justify_alignment();
text_placements_ptr placements = text_placements_ptr(boost::make_shared<text_placements_dummy>());
sym.set_placement_options( placements );
sym.set_text_size(text_size);
sym.set_displacement(displace);
sym.set_vertical_alignment(valign);
sym.set_horizontal_alignment(halign);
sym.set_justify_alignment(jalign);
}
template <class T>
void copy_height_ptr(T & sym) const
{
std::string height_expr = to_expression_string(sym.height());
sym.set_height(parse_expression(height_expr,"utf8"));
}
};
public:
rule()
: name_(),
@ -169,48 +270,18 @@ public:
also_filter_(rhs.also_filter_)
{
if (deep_copy) {
//std::string expr = to_expression_string(rhs.filter_);
//filter_ = parse_expression(expr,"utf8");
std::string expr = to_expression_string(rhs.filter_);
filter_ = parse_expression(expr,"utf8");
symbolizers::iterator it = syms_.begin(),
end = syms_.end();
// FIXME - metawriter_ptr?
for(; it != end; ++it) {
/*if (polygon_symbolizer *sym = boost::get<polygon_symbolizer>(&(*it))) {
// no shared pointers
} else if (line_symbolizer *sym = boost::get<line_symbolizer>(&(*it))) {
// no shared pointers
} else if (building_symbolizer *sym = boost::get<building_symbolizer>(&(*it))) {
// no shared pointers
}*/
if (markers_symbolizer *sym = boost::get<markers_symbolizer>(&(*it))) {
copy_path_ptr(sym);
} else if (point_symbolizer *sym = boost::get<point_symbolizer>(&(*it))) {
copy_path_ptr(sym);
} else if (polygon_pattern_symbolizer *sym = boost::get<polygon_pattern_symbolizer>(&(*it))) {
copy_path_ptr(sym);
} else if (line_pattern_symbolizer *sym = boost::get<line_pattern_symbolizer>(&(*it))) {
copy_path_ptr(sym);
} else if (raster_symbolizer *sym = boost::get<raster_symbolizer>(&(*it))) {
raster_colorizer_ptr old_colorizer = sym->get_colorizer(),
new_colorizer = 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);
} else if (shield_symbolizer *sym = boost::get<shield_symbolizer>(&(*it))) {
copy_path_ptr(sym);
copy_text_ptr(sym);
} else if (text_symbolizer *sym = boost::get<text_symbolizer>(&(*it))) {
copy_text_ptr(sym);
}
for(; it != end; ++it)
{
boost::apply_visitor(deepcopy_symbolizer(),*it);
}
}
}
@ -340,40 +411,7 @@ private:
filter_=rhs.filter_;
else_filter_=rhs.else_filter_;
also_filter_=rhs.also_filter_;
}
template <class T>
void copy_path_ptr(T* sym)
{
std::string path = path_processor_type::to_string(*sym->get_filename());
sym->set_filename( parse_path(path) );
}
template <class T>
void copy_text_ptr(T* sym)
{
std::string name = to_expression_string(*sym->get_name());
sym->set_name( parse_expression(name) );
// FIXME - orientation doesn't appear to be initialized in constructor?
//std::string orientation = to_expression_string(*sym->get_orientation());
//sym->set_orientation( parse_expression(orientation) );
float text_size = sym->get_text_size();
position displace = sym->get_displacement();
vertical_alignment_e valign = sym->get_vertical_alignment();
horizontal_alignment_e halign = sym->get_horizontal_alignment();
justify_alignment_e jalign = sym->get_justify_alignment();
text_placements_ptr placements = text_placements_ptr(boost::make_shared<text_placements_dummy>());
sym->set_placement_options( placements );
sym->set_text_size(text_size);
sym->set_displacement(displace);
sym->set_vertical_alignment(valign);
sym->set_horizontal_alignment(halign);
sym->set_justify_alignment(jalign);
}
}
};
}