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svg_parser - store unresolved gradient nodes for deferred initalisation.

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artemp 2017-05-26 12:14:13 +02:00 committed by Artem Pavlenko
parent 0301399d40
commit 6da83bc986
2 changed files with 88 additions and 20 deletions
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3
include/mapnik/svg/svg_parser.hpp
View file

@ -30,7 +30,7 @@
#include <mapnik/svg/svg_path_adapter.hpp>
#include <mapnik/gradient.hpp>
#include <mapnik/util/noncopyable.hpp>
#include <boost/property_tree/detail/xml_parser_read_rapidxml.hpp>
// stl
#include <map>
@ -72,6 +72,7 @@ public:
bool is_defs_;
bool strict_;
std::map<std::string, gradient> gradient_map_;
std::map<std::string, boost::property_tree::detail::rapidxml::xml_node<char> const*> unresolved_gradient_map_;
std::pair<std::string, gradient> temporary_gradient_;
error_handler err_handler_;

105
src/svg/svg_parser.cpp
View file

@ -45,7 +45,6 @@
#include <boost/fusion/adapted/struct.hpp>
#include <boost/fusion/include/std_pair.hpp>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/property_tree/detail/xml_parser_read_rapidxml.hpp>
#pragma GCC diagnostic pop
#include <string>
@ -243,10 +242,10 @@ bool traverse_tree(svg_parser & parser, rapidxml::xml_node<char> const* node)
{
parse_radial_gradient(parser, node);
}
else if (std::strcmp(name, "stop") == 0)
{
parse_gradient_stop(parser, node);
}
//else if (std::strcmp(name, "stop") == 0)
//{
// parse_gradient_stop(parser, node);
//}
if (!parser.is_defs_) // FIXME
{
@ -355,10 +354,10 @@ void end_element(svg_parser & parser, rapidxml::xml_node<char> const* node)
parser.is_defs_ = false;
}
}
else if (std::strcmp(name, "linearGradient") == 0 || std::strcmp(name, "radialGradient") == 0)
{
parser.gradient_map_[parser.temporary_gradient_.first] = parser.temporary_gradient_.second;
}
//else if (std::strcmp(name, "linearGradient") == 0 || std::strcmp(name, "radialGradient") == 0)
//{
// parser.gradient_map_[parser.temporary_gradient_.first] = parser.temporary_gradient_.second;
//}
}
void parse_attr(svg_parser & parser, char const* name, char const* value )
@ -383,6 +382,32 @@ void parse_attr(svg_parser & parser, char const* name, char const* value )
{
parser.path_.add_fill_gradient(parser.gradient_map_[id]);
}
else if (parser.unresolved_gradient_map_.count(id) > 0)
{
// try parsing again
auto const* gradient_node = parser.unresolved_gradient_map_[id];
traverse_tree(parser, gradient_node);
//if (std::strcmp(gradient_node->name(), "linearGradient"))
//{
// parse_linear_gradient(parser, gradient_node);
//}
//else if (std::strcmp(gradient_node->name(), "radialGradient"))
//{
// parse_radial_gradient(parser, gradient_node);
//}
if (parser.gradient_map_.count(id) > 0)
{
parser.path_.add_stroke_gradient(parser.gradient_map_[id]);
}
else
{
std::stringstream ss;
ss << "Failed to find gradient fill: " << id;
parser.err_handler().on_error(ss.str());
}
}
else
{
std::stringstream ss;
@ -420,6 +445,31 @@ void parse_attr(svg_parser & parser, char const* name, char const* value )
{
parser.path_.add_stroke_gradient(parser.gradient_map_[id]);
}
else if (parser.unresolved_gradient_map_.count(id) > 0)
{
// try parsing again
auto const* gradient_node = parser.unresolved_gradient_map_[id];
traverse_tree(parser, gradient_node);
//if (std::strcmp(gradient_node->name(), "linearGradient"))
//{
// parse_linear_gradient(parser, gradient_node);
//}
//else if (std::strcmp(gradient_node->name(), "radialGradient"))
//{
// parse_radial_gradient(parser, gradient_node);
//}
if (parser.gradient_map_.count(id) > 0)
{
parser.path_.add_stroke_gradient(parser.gradient_map_[id]);
}
else
{
std::stringstream ss;
ss << "Failed to find gradient stroke: " << id;
parser.err_handler().on_error(ss.str());
}
}
else
{
std::stringstream ss;
@ -919,9 +969,9 @@ bool parse_common_gradient(svg_parser & parser, rapidxml::xml_node<char> const*
}
else
{
std::stringstream ss;
ss << "Failed to find linked gradient " << linkid;
parser.err_handler().on_error(ss.str());
// save node for later
std::cerr << "Unresolved Gradient: " << parser.temporary_gradient_.first << std::endl;
parser.unresolved_gradient_map_.emplace(parser.temporary_gradient_.first, node);
return false;
}
}
@ -952,7 +1002,7 @@ bool parse_common_gradient(svg_parser & parser, rapidxml::xml_node<char> const*
void parse_radial_gradient(svg_parser & parser, rapidxml::xml_node<char> const* node)
{
parse_common_gradient(parser, node);
if (!parse_common_gradient(parser, node)) return;
double cx = 0.5;
double cy = 0.5;
double fx = 0.0;
@ -999,16 +1049,24 @@ void parse_radial_gradient(svg_parser & parser, rapidxml::xml_node<char> const*
}
parser.temporary_gradient_.second.set_gradient_type(RADIAL);
parser.temporary_gradient_.second.set_control_points(fx,fy,cx,cy,r);
// add this here in case we have no end tag, will be replaced if we do
parser.gradient_map_[parser.temporary_gradient_.first] = parser.temporary_gradient_.second;
parser.temporary_gradient_.second.set_control_points(fx, fy, cx, cy, r);
// parse stops
for (auto const* child = node->first_node();
child; child = child->next_sibling())
{
if (std::strcmp(child->name(), "stop") == 0)
{
parse_gradient_stop(parser, child);
}
}
parser.gradient_map_[parser.temporary_gradient_.first] = parser.temporary_gradient_.second;
//MAPNIK_LOG_DEBUG(svg_parser) << "Found Radial Gradient: " << " " << cx << " " << cy << " " << fx << " " << fy << " " << r;
}
void parse_linear_gradient(svg_parser & parser, rapidxml::xml_node<char> const* node)
{
parse_common_gradient(parser, node);
if (!parse_common_gradient(parser, node)) return;
double x1 = 0.0;
double x2 = 1.0;
@ -1046,8 +1104,17 @@ void parse_linear_gradient(svg_parser & parser, rapidxml::xml_node<char> const*
}
parser.temporary_gradient_.second.set_gradient_type(LINEAR);
parser.temporary_gradient_.second.set_control_points(x1,y1,x2,y2);
// add this here in case we have no end tag, will be replaced if we do
parser.temporary_gradient_.second.set_control_points(x1, y1, x2, y2);
// parse stops
for (auto const* child = node->first_node();
child; child = child->next_sibling())
{
if (std::strcmp(child->name(), "stop") == 0)
{
parse_gradient_stop(parser, child);
}
}
parser.gradient_map_[parser.temporary_gradient_.first] = parser.temporary_gradient_.second;
}