text_placements_ptr text_placements_simple::from_xml(xml_node const& xml, fontset_map const& fontsets, bool is_shield)
{
// TODO - handle X cleaner
std::string placements_string = xml.get_attr<std::string>("placements", "X");
// like set_property_from_xml in properties_util.hpp
if (!placements_string.empty())
{
if (placements_string == "X")
{
text_placements_ptr ptr = std::make_shared<text_placements_simple>(placements_string);
ptr->defaults.from_xml(xml, fontsets, is_shield);
return ptr;
}
else
{
try
{
// we don't use parse_expression(placements_string) directly here to benefit from the cache in the xml_node
boost::optional<expression_ptr> val = xml.get_opt_attr<expression_ptr>("placements");
if (val)
{
text_placements_ptr ptr = std::make_shared<text_placements_simple>(*val);
ptr->defaults.from_xml(xml, fontsets, is_shield);
return ptr;
}
}
catch (std::exception const& ex)
{
// otherwise ensure it is valid
std::vector<directions_e> direction;
std::vector<int> text_sizes;
if (!parse_positions(placements_string,direction,text_sizes))
{
MAPNIK_LOG_ERROR(text_placements) << "Could not parse text_placement_simple placement string ('" << placements_string << "')";
if (direction.size() == 0)
{
MAPNIK_LOG_ERROR(text_placements) << "text_placements_simple with no valid placements! ('"<< placements_string <<"')";
}
return text_placements_ptr();
}
else
{
text_placements_ptr ptr = std::make_shared<text_placements_simple>(placements_string,std::move(direction),std::move(text_sizes));
ptr->defaults.from_xml(xml, fontsets, is_shield);
return ptr;
}
}
text_placements_ptr ptr = std::make_shared<text_placements_simple>(placements_string);
ptr->defaults.from_xml(xml, fontsets, is_shield);
return ptr;
}
}
return text_placements_ptr();
}
text_placements_ptr text_placements_reverse_combined::from_xml(xml_node const& xml, fontset_map const& fontsets, bool is_shield)
{
text_placements_ptr simple_placement_ptr = text_placements_simple::from_xml(xml, fontsets, is_shield);
text_placements_ptr list_placement_ptr = text_placements_list::from_xml(xml, fontsets, is_shield);
if(simple_placement_ptr && list_placement_ptr)
{
text_placements_ptr ptr = std::make_shared<text_placements_reverse_combined>(simple_placement_ptr, list_placement_ptr);
ptr->defaults.from_xml(xml, fontsets, is_shield);
return ptr;
}
return text_placements_ptr();
}
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);
}