static boost::python::tuple getstate(const text_symbolizer& t) { boost::python::list disp = get_displacement_list(t); boost::python::list anchor = get_anchor_list(t); // so we do not exceed max args accepted by make_tuple, // lets put the increasing list of parameters in a list boost::python::list extras; extras.append(t.get_wrap_char_string()); extras.append(t.get_line_spacing()); extras.append(t.get_character_spacing()); extras.append(t.get_text_convert()); return boost::python::make_tuple(disp,t.get_label_placement(), t.get_vertical_alignment(),t.get_halo_radius(),t.get_halo_fill(),t.get_text_ratio(), t.get_wrap_width(),t.get_label_spacing(),t.get_minimum_distance(),t.get_allow_overlap(), anchor,t.get_force_odd_labels(),t.get_max_char_angle_delta(),extras ); }
void grid_renderer<T>::process(text_symbolizer const& sym, Feature const& feature, proj_transform const& prj_trans) { typedef coord_transform2<CoordTransform,geometry_type> path_type; bool placement_found = false; text_placement_info_ptr placement_options = sym.get_placement_options()->get_placement_info(); while (!placement_found && placement_options->next()) { expression_ptr name_expr = sym.get_name(); if (!name_expr) return; value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature),*name_expr); UnicodeString text = result.to_unicode(); if ( sym.get_text_transform() == UPPERCASE) { text = text.toUpper(); } else if ( sym.get_text_transform() == LOWERCASE) { text = text.toLower(); } else if ( sym.get_text_transform() == CAPITALIZE) { text = text.toTitle(NULL); } if ( text.length() <= 0 ) continue; color const& fill = sym.get_fill(); face_set_ptr faces; if (sym.get_fontset().size() > 0) { faces = font_manager_.get_face_set(sym.get_fontset()); } else { faces = font_manager_.get_face_set(sym.get_face_name()); } stroker_ptr strk = font_manager_.get_stroker(); if (!(faces->size() > 0 && strk)) { throw config_error("Unable to find specified font face '" + sym.get_face_name() + "'"); } text_renderer<T> ren(pixmap_, faces, *strk); ren.set_pixel_size(placement_options->text_size * (scale_factor_ * (1.0/pixmap_.get_resolution()))); ren.set_fill(fill); ren.set_halo_fill(sym.get_halo_fill()); ren.set_halo_radius(sym.get_halo_radius() * scale_factor_); ren.set_opacity(sym.get_text_opacity()); // /pixmap_.get_resolution() ? box2d<double> dims(0,0,width_,height_); placement_finder<label_collision_detector4> finder(detector_,dims); string_info info(text); faces->get_string_info(info); unsigned num_geom = feature.num_geometries(); for (unsigned i=0; i<num_geom; ++i) { geometry_type const& geom = feature.get_geometry(i); if (geom.num_points() == 0) continue; // don't bother with empty geometries while (!placement_found && placement_options->next_position_only()) { placement text_placement(info, sym, scale_factor_); text_placement.avoid_edges = sym.get_avoid_edges(); if (sym.get_label_placement() == POINT_PLACEMENT || sym.get_label_placement() == INTERIOR_PLACEMENT) { double label_x, label_y, z=0.0; if (sym.get_label_placement() == POINT_PLACEMENT) geom.label_position(&label_x, &label_y); else geom.label_interior_position(&label_x, &label_y); prj_trans.backward(label_x,label_y, z); t_.forward(&label_x,&label_y); double angle = 0.0; expression_ptr angle_expr = sym.get_orientation(); if (angle_expr) { // apply rotation value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature),*angle_expr); angle = result.to_double(); } finder.find_point_placement(text_placement, placement_options, label_x, label_y, angle, sym.get_line_spacing(), sym.get_character_spacing()); finder.update_detector(text_placement); } else if ( geom.num_points() > 1 && sym.get_label_placement() == LINE_PLACEMENT) { path_type path(t_,geom,prj_trans); finder.find_line_placements<path_type>(text_placement, placement_options, path); } if (!text_placement.placements.size()) continue; placement_found = true; for (unsigned int ii = 0; ii < text_placement.placements.size(); ++ii) { double x = text_placement.placements[ii].starting_x; double y = text_placement.placements[ii].starting_y; ren.prepare_glyphs(&text_placement.placements[ii]); ren.render_id(feature.id(),x,y,2); } } } } if (placement_found) pixmap_.add_feature(feature); }