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mapnik/src/text_properties.cpp
Hermann Kraus 2b68cea0a1 Merge branch 'new-xml' 
Conflicts:
	include/mapnik/config_error.hpp
	include/mapnik/ptree_helpers.hpp
	src/formatting/text.cpp
	src/libxml2_loader.cpp
	src/load_map.cpp
	src/metawriter_factory.cpp
	src/text_placements/registry.cpp
	src/text_placements/simple.cpp
2012-03-13 11:11:28 +01:00

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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/text_properties.hpp>
#include <mapnik/processed_text.hpp>
#include <mapnik/ptree_helpers.hpp>
#include <mapnik/expression_string.hpp>
#include <mapnik/formatting/text.hpp>
#include <mapnik/xml_node.hpp>
#include <mapnik/config_error.hpp>
// boost
#include <boost/make_shared.hpp>
namespace mapnik
{
using boost::optional;
text_symbolizer_properties::text_symbolizer_properties() :
orientation(),
displacement(0,0),
label_placement(POINT_PLACEMENT),
halign(H_AUTO),
jalign(J_MIDDLE),
valign(V_AUTO),
label_spacing(0),
label_position_tolerance(0),
avoid_edges(false),
minimum_distance(0.0),
minimum_padding(0.0),
minimum_path_length(0.0),
max_char_angle_delta(22.5 * M_PI/180.0),
force_odd_labels(false),
allow_overlap(false),
text_ratio(0),
wrap_width(0),
format(),
tree_()
{
}
void text_symbolizer_properties::process(processed_text &output, Feature const& feature) const
{
output.clear();
if (tree_) {
tree_->apply(format, feature, output);
} else {
#ifdef MAPNIK_DEBUG
std::cerr << "Warning: text_symbolizer_properties can't produce text: No formatting tree!\n";
#endif
}
}
void text_symbolizer_properties::set_format_tree(formatting::node_ptr tree)
{
tree_ = tree;
}
formatting::node_ptr text_symbolizer_properties::format_tree() const
{
return tree_;
}
void text_symbolizer_properties::from_xml(xml_node const &sym, fontset_map const & fontsets)
{
optional<label_placement_e> placement_ = sym.get_opt_attr<label_placement_e>("placement");
if (placement_) label_placement = *placement_;
optional<vertical_alignment_e> valign_ = sym.get_opt_attr<vertical_alignment_e>("vertical-alignment");
if (valign_) valign = *valign_;
optional<unsigned> text_ratio_ = sym.get_opt_attr<unsigned>("text-ratio");
if (text_ratio_) text_ratio = *text_ratio_;
optional<unsigned> wrap_width_ = sym.get_opt_attr<unsigned>("wrap-width");
if (wrap_width_) wrap_width = *wrap_width_;
optional<unsigned> label_position_tolerance_ = sym.get_opt_attr<unsigned>("label-position-tolerance");
if (label_position_tolerance_) label_position_tolerance = *label_position_tolerance_;
optional<unsigned> spacing_ = sym.get_opt_attr<unsigned>("spacing");
if (spacing_) label_spacing = *spacing_;
optional<unsigned> minimum_distance_ = sym.get_opt_attr<unsigned>("minimum-distance");
if (minimum_distance_) minimum_distance = *minimum_distance_;
optional<unsigned> min_padding_ = sym.get_opt_attr<unsigned>("minimum-padding");
if (min_padding_) minimum_padding = *min_padding_;
optional<unsigned> min_path_length_ = sym.get_opt_attr<unsigned>("minimum-path-length");
if (min_path_length_) minimum_path_length = *min_path_length_;
optional<boolean> avoid_edges_ = sym.get_opt_attr<boolean>("avoid-edges");
if (avoid_edges_) avoid_edges = *avoid_edges_;
optional<boolean> allow_overlap_ = sym.get_opt_attr<boolean>("allow-overlap");
if (allow_overlap_) allow_overlap = *allow_overlap_;
optional<horizontal_alignment_e> halign_ = sym.get_opt_attr<horizontal_alignment_e>("horizontal-alignment");
if (halign_) halign = *halign_;
optional<justify_alignment_e> jalign_ = sym.get_opt_attr<justify_alignment_e>("justify-alignment");
if (jalign_) jalign = *jalign_;
/* Attributes needing special care */
optional<std::string> orientation_ = sym.get_opt_attr<std::string>("orientation");
if (orientation_) orientation = parse_expression(*orientation_, "utf8");
optional<double> dx = sym.get_opt_attr<double>("dx");
if (dx) displacement.first = *dx;
optional<double> dy = sym.get_opt_attr<double>("dy");
if (dy) displacement.second = *dy;
optional<double> max_char_angle_delta_ = sym.get_opt_attr<double>("max-char-angle-delta");
if (max_char_angle_delta_) max_char_angle_delta=(*max_char_angle_delta_)*(M_PI/180);
optional<std::string> name_ = sym.get_opt_attr<std::string>("name");
if (name_) {
std::clog << "### WARNING: Using 'name' in TextSymbolizer/ShieldSymbolizer is deprecated!\n";
set_old_style_expression(parse_expression(*name_, "utf8"));
}
format.from_xml(sym, fontsets);
formatting::node_ptr n(formatting::node::from_xml(sym));
if (n) set_format_tree(n);
}
void text_symbolizer_properties::to_xml(boost::property_tree::ptree &node,
bool explicit_defaults,
text_symbolizer_properties const& dfl) const
{
if (orientation)
{
std::string const& orientationstr = to_expression_string(*orientation);
if (!dfl.orientation || orientationstr != to_expression_string(*(dfl.orientation)) || explicit_defaults) {
set_attr(node, "orientation", orientationstr);
}
}
if (displacement.first != dfl.displacement.first || explicit_defaults)
{
set_attr(node, "dx", displacement.first);
}
if (displacement.second != dfl.displacement.second || explicit_defaults)
{
set_attr(node, "dy", displacement.second);
}
if (label_placement != dfl.label_placement || explicit_defaults)
{
set_attr(node, "placement", label_placement);
}
if (valign != dfl.valign || explicit_defaults)
{
set_attr(node, "vertical-alignment", valign);
}
if (text_ratio != dfl.text_ratio || explicit_defaults)
{
set_attr(node, "text-ratio", text_ratio);
}
if (wrap_width != dfl.wrap_width || explicit_defaults)
{
set_attr(node, "wrap-width", wrap_width);
}
if (label_position_tolerance != dfl.label_position_tolerance || explicit_defaults)
{
set_attr(node, "label-position-tolerance", label_position_tolerance);
}
if (label_spacing != dfl.label_spacing || explicit_defaults)
{
set_attr(node, "spacing", label_spacing);
}
if (minimum_distance != dfl.minimum_distance || explicit_defaults)
{
set_attr(node, "minimum-distance", minimum_distance);
}
if (minimum_padding != dfl.minimum_padding || explicit_defaults)
{
set_attr(node, "minimum-padding", minimum_padding);
}
if (minimum_path_length != dfl.minimum_path_length || explicit_defaults)
{
set_attr(node, "minimum-path-length", minimum_path_length);
}
if (allow_overlap != dfl.allow_overlap || explicit_defaults)
{
set_attr(node, "allow-overlap", allow_overlap);
}
if (avoid_edges != dfl.avoid_edges || explicit_defaults)
{
set_attr(node, "avoid-edges", avoid_edges);
}
if (max_char_angle_delta != dfl.max_char_angle_delta || explicit_defaults)
{
set_attr(node, "max-char-angle-delta", max_char_angle_delta);
}
if (halign != dfl.halign || explicit_defaults)
{
set_attr(node, "horizontal-alignment", halign);
}
if (jalign != dfl.jalign || explicit_defaults)
{
set_attr(node, "justify-alignment", jalign);
}
if (valign != dfl.valign || explicit_defaults)
{
set_attr(node, "vertical-alignment", valign);
}
format.to_xml(node, explicit_defaults, dfl.format);
if (tree_) tree_->to_xml(node);
}
void text_symbolizer_properties::add_expressions(expression_set &output) const
{
output.insert(orientation);
if (tree_) tree_->add_expressions(output);
}
void text_symbolizer_properties::set_old_style_expression(expression_ptr expr)
{
tree_ = boost::make_shared<formatting::text_node>(expr);
}
char_properties::char_properties() :
face_name(),
fontset(),
text_size(10.0),
character_spacing(0),
line_spacing(0),
text_opacity(1.0),
wrap_before(false),
wrap_char(' '),
text_transform(NONE),
fill(color(0,0,0)),
halo_fill(color(255,255,255)),
halo_radius(0)
{
}
void char_properties::from_xml(xml_node const& sym, fontset_map const& fontsets)
{
optional<double> text_size_ = sym.get_opt_attr<double>("size");
if (text_size_) text_size = *text_size_;
optional<double> character_spacing_ = sym.get_opt_attr<double>("character-spacing");
if (character_spacing_) character_spacing = *character_spacing_;
optional<color> fill_ = sym.get_opt_attr<color>("fill");
if (fill_) fill = *fill_;
optional<color> halo_fill_ = sym.get_opt_attr<color>("halo-fill");
if (halo_fill_) halo_fill = *halo_fill_;
optional<double> halo_radius_ = sym.get_opt_attr<double>("halo-radius");
if (halo_radius_) halo_radius = *halo_radius_;
optional<boolean> wrap_before_ = sym.get_opt_attr<boolean>("wrap-before");
if (wrap_before_) wrap_before = *wrap_before_;
optional<text_transform_e> tconvert_ = sym.get_opt_attr<text_transform_e>("text-transform");
if (tconvert_) text_transform = *tconvert_;
optional<double> line_spacing_ = sym.get_opt_attr<double>("line-spacing");
if (line_spacing_) line_spacing = *line_spacing_;
optional<double> opacity_ = sym.get_opt_attr<double>("opacity");
if (opacity_) text_opacity = *opacity_;
optional<std::string> wrap_char_ = sym.get_opt_attr<std::string>("wrap-character");
if (wrap_char_ && (*wrap_char_).size() > 0) wrap_char = ((*wrap_char_)[0]);
optional<std::string> face_name_ = sym.get_opt_attr<std::string>("face-name");
if (face_name_)
{
face_name = *face_name_;
}
optional<std::string> fontset_name_ = sym.get_opt_attr<std::string>("fontset-name");
if (fontset_name_) {
std::map<std::string,font_set>::const_iterator itr = fontsets.find(*fontset_name_);
if (itr != fontsets.end())
{
fontset = itr->second;
}
else
{
throw config_error("Unable to find any fontset named '" + *fontset_name_ + "'", sym);
}
}
if (!face_name.empty() && !fontset.get_name().empty())
{
throw config_error("Can't have both face-name and fontset-name", sym);
}
if (face_name.empty() && fontset.get_name().empty())
{
throw config_error("Must have face-name or fontset-name", sym);
}
}
void char_properties::to_xml(boost::property_tree::ptree &node, bool explicit_defaults, char_properties const &dfl) const
{
std::string const& fontset_name = fontset.get_name();
std::string const& dfl_fontset_name = dfl.fontset.get_name();
if (fontset_name != dfl_fontset_name || explicit_defaults)
{
set_attr(node, "fontset-name", fontset_name);
}
if (face_name != dfl.face_name || explicit_defaults)
{
set_attr(node, "face-name", face_name);
}
if (text_size != dfl.text_size || explicit_defaults)
{
set_attr(node, "size", text_size);
}
if (fill != dfl.fill || explicit_defaults)
{
set_attr(node, "fill", fill);
}
if (halo_radius != dfl.halo_radius || explicit_defaults)
{
set_attr(node, "halo-radius", halo_radius);
}
if (halo_fill != dfl.halo_fill || explicit_defaults)
{
set_attr(node, "halo-fill", halo_fill);
}
if (wrap_before != dfl.wrap_before || explicit_defaults)
{
set_attr(node, "wrap-before", wrap_before);
}
if (wrap_char != dfl.wrap_char || explicit_defaults)
{
set_attr(node, "wrap-character", std::string(1, wrap_char));
}
if (text_transform != dfl.text_transform || explicit_defaults)
{
set_attr(node, "text-transform", text_transform);
}
if (line_spacing != dfl.line_spacing || explicit_defaults)
{
set_attr(node, "line-spacing", line_spacing);
}
if (character_spacing != dfl.character_spacing || explicit_defaults)
{
set_attr(node, "character-spacing", character_spacing);
}
// for shield_symbolizer this is later overridden
if (text_opacity != dfl.text_opacity || explicit_defaults)
{
set_attr(node, "opacity", text_opacity);
}
}
} //ns mapnik
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