Support for cairo + grid renderer.
This commit is contained in:
Hermann Kraus
parent
bdc20f766b
commit
1106dcb445
3 changed files with 38 additions and 269 deletions
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@ -87,7 +87,6 @@ text_placement_info_ptr text_symbolizer_helper<FaceManagerT, DetectorT>::get_pla
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box2d<double> dims(0, 0, width_, height_);
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// typedef coord_transform2<CoordTransform,geometry_type> path_type;
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text_placement_info_ptr placement = sym.get_placement_options()->get_placement_info();
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placement->init(scale_factor_, width_, height_);
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if (writer.first)
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@ -36,6 +36,7 @@
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#include <mapnik/svg/svg_path_adapter.hpp>
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#include <mapnik/svg/svg_path_attributes.hpp>
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#include <mapnik/segment.hpp>
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#include <mapnik/symbolizer_helpers.hpp>
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#include <mapnik/expression_evaluator.hpp>
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#include <mapnik/warp.hpp>
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#include <mapnik/config.hpp>
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@ -572,11 +573,7 @@ public:
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void add_text(text_path & path,
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cairo_face_manager & manager,
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face_set_ptr const& faces,
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unsigned text_size,
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color const& fill,
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unsigned halo_radius,
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color const& halo_fill)
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face_manager<freetype_engine> &font_manager)
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{
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double sx = path.starting_x;
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double sy = path.starting_y;
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@ -591,6 +588,10 @@ public:
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path.vertex(&c, &x, &y, &angle, &format);
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face_set_ptr faces = font_manager.get_face_set(format->face_name, format->fontset);
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float text_size = format->text_size;
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faces->set_character_sizes(text_size);
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glyph_ptr glyph = faces->get_glyph(c);
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if (glyph)
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@ -609,43 +610,11 @@ public:
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set_font_face(manager, glyph->get_face());
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glyph_path(glyph->get_index(), sx + x, sy - y);
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}
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}
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set_line_width(halo_radius);
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set_line_join(ROUND_JOIN);
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set_color(halo_fill);
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stroke();
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set_color(fill);
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path.rewind();
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for (int iii = 0; iii < path.num_nodes(); iii++)
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{
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int c;
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double x, y, angle;
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char_properties *format;
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path.vertex(&c, &x, &y, &angle, &format);
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glyph_ptr glyph = faces->get_glyph(c);
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if (glyph)
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{
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Cairo::Matrix matrix;
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matrix.xx = text_size * cos(angle);
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matrix.xy = text_size * sin(angle);
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matrix.yx = text_size * -sin(angle);
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matrix.yy = text_size * cos(angle);
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matrix.x0 = 0;
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matrix.y0 = 0;
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set_font_matrix(matrix);
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set_font_face(manager, glyph->get_face());
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set_line_width(format->halo_radius);
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set_line_join(ROUND_JOIN);
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set_color(format->halo_fill);
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stroke();
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set_color(format->fill);
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show_glyph(glyph->get_index(), sx + x, sy - y);
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}
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}
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@ -1466,122 +1435,18 @@ void cairo_renderer_base::process(text_symbolizer const& sym,
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Feature const& feature,
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proj_transform const& prj_trans)
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{
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#if 0
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typedef coord_transform2<CoordTransform,geometry_type> path_type;
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text_symbolizer_helper<face_manager<freetype_engine>, label_collision_detector4> helper(detector_.extent().width(), detector_.extent().height(), 1.0 /*scale_factor*/, t_, font_manager_, detector_);
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bool placement_found = false;
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text_placement_info_ptr placement_options = sym.get_placement_options()->get_placement_info();
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while (!placement_found && placement_options->next())
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text_placement_info_ptr placement = helper.get_placement(sym, feature, prj_trans);
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if (!placement) return;
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cairo_context context(context_);
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for (unsigned int ii = 0; ii < placement->placements.size(); ++ii)
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{
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expression_ptr name_expr = sym.get_name();
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if (!name_expr) return;
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value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature),*name_expr);
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UnicodeString text = result.to_unicode();
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if ( sym.get_text_transform() == UPPERCASE)
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{
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text = text.toUpper();
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}
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else if ( sym.get_text_transform() == LOWERCASE)
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{
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text = text.toLower();
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}
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else if ( sym.get_text_transform() == CAPITALIZE)
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{
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text = text.toTitle(NULL);
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}
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if (text.length() <= 0) continue;
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face_set_ptr faces;
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if (sym.get_fontset().size() > 0)
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{
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faces = font_manager_.get_face_set(sym.get_fontset());
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}
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else
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{
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faces = font_manager_.get_face_set(sym.get_face_name());
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}
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if (faces->size() == 0)
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{
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throw config_error("Unable to find specified font face '" + sym.get_face_name() + "'");
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}
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cairo_context context(context_);
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string_info info(text);
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faces->set_character_sizes(placement_options->text_size);
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faces->get_string_info(info, text, 0);
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placement_finder<label_collision_detector4> finder(detector_);
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metawriter_with_properties writer = sym.get_metawriter();
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unsigned num_geom = feature.num_geometries();
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for (unsigned i=0; i<num_geom; ++i)
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{
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geometry_type const& geom = feature.get_geometry(i);
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if (geom.num_points() == 0) continue;// don't bother with empty geometries
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while (!placement_found && placement_options->next_position_only())
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{
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placement text_placement(info, sym, 1.0);
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text_placement.avoid_edges = sym.get_avoid_edges();
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if (writer.first)
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text_placement.collect_extents = true; // needed for inmem metawriter
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if (sym.get_label_placement() == POINT_PLACEMENT ||
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sym.get_label_placement() == INTERIOR_PLACEMENT)
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{
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double label_x, label_y, z=0.0;
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if (sym.get_label_placement() == POINT_PLACEMENT)
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geom.label_position(&label_x, &label_y);
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else
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geom.label_interior_position(&label_x, &label_y);
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prj_trans.backward(label_x,label_y, z);
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t_.forward(&label_x,&label_y);
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double angle = 0.0;
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expression_ptr angle_expr = sym.get_orientation();
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if (angle_expr)
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{
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// apply rotation
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value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature),*angle_expr);
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angle = result.to_double();
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}
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finder.find_point_placement(text_placement, placement_options,
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label_x, label_y,
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angle, sym.get_line_spacing(),
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sym.get_character_spacing());
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finder.update_detector(text_placement);
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}
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else if ( geom.num_points() > 1 && sym.get_label_placement() == LINE_PLACEMENT)
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{
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path_type path(t_, geom, prj_trans);
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finder.find_line_placements<path_type>(text_placement, placement_options, path);
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}
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if (!text_placement.placements.size()) continue;
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placement_found = true;
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for (unsigned int ii = 0; ii < text_placement.placements.size(); ++ii)
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{
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context.add_text(text_placement.placements[ii],
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face_manager_,
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faces,
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placement_options->text_size,
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sym.get_fill(),
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sym.get_halo_radius(),
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sym.get_halo_fill()
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);
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}
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if (writer.first) writer.first->add_text(text_placement, faces, feature, t_, writer.second);
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}
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}
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context.add_text(placement->placements[ii], face_manager_, font_manager_);
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}
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#endif
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}
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template class cairo_renderer<Cairo::Surface>;
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@ -25,6 +25,7 @@
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#include <mapnik/grid/grid_renderer.hpp>
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#include <mapnik/font_engine_freetype.hpp>
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#include <mapnik/expression_evaluator.hpp>
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#include <mapnik/symbolizer_helpers.hpp>
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namespace mapnik {
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@ -33,122 +34,26 @@ void grid_renderer<T>::process(text_symbolizer const& sym,
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Feature const& feature,
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proj_transform const& prj_trans)
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{
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#if 0
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typedef coord_transform2<CoordTransform,geometry_type> path_type;
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text_symbolizer_helper<face_manager<freetype_engine>,
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label_collision_detector4> helper(
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width_, height_,
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scale_factor_ * (1.0/pixmap_.get_resolution()),
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t_, font_manager_, detector_);
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bool placement_found = false;
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text_placement_info_ptr placement_options = sym.get_placement_options()->get_placement_info();
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while (!placement_found && placement_options->next())
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text_placement_info_ptr placement = helper.get_placement(sym, feature, prj_trans);
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if (!placement) return;
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text_renderer<T> ren(pixmap_, font_manager_, *(font_manager_.get_stroker()));
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for (unsigned int ii = 0; ii < placement->placements.size(); ++ii)
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{
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expression_ptr name_expr = sym.get_name();
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if (!name_expr) return;
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value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature),*name_expr);
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UnicodeString text = result.to_unicode();
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if ( sym.get_text_transform() == UPPERCASE)
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{
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text = text.toUpper();
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}
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else if ( sym.get_text_transform() == LOWERCASE)
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{
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text = text.toLower();
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}
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else if ( sym.get_text_transform() == CAPITALIZE)
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{
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text = text.toTitle(NULL);
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}
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if ( text.length() <= 0 ) continue;
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color const& fill = sym.get_fill();
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face_set_ptr faces;
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if (sym.get_fontset().size() > 0)
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{
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faces = font_manager_.get_face_set(sym.get_fontset());
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}
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else
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{
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faces = font_manager_.get_face_set(sym.get_face_name());
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}
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stroker_ptr strk = font_manager_.get_stroker();
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if (!(faces->size() > 0 && strk))
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{
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throw config_error("Unable to find specified font face '" + sym.get_face_name() + "'");
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}
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text_renderer<T> ren(pixmap_, faces, *strk);
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ren.set_character_size(placement_options->text_size * (scale_factor_ * (1.0/pixmap_.get_resolution())));
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ren.set_fill(fill);
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ren.set_halo_fill(sym.get_halo_fill());
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ren.set_halo_radius(sym.get_halo_radius() * scale_factor_);
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ren.set_opacity(sym.get_text_opacity());
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// /pixmap_.get_resolution() ?
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box2d<double> dims(0,0,width_,height_);
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placement_finder<label_collision_detector4> finder(detector_,dims);
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string_info info(text);
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faces->get_string_info(info, text, 0);
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unsigned num_geom = feature.num_geometries();
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for (unsigned i=0; i<num_geom; ++i)
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{
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geometry_type const& geom = feature.get_geometry(i);
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if (geom.num_points() == 0) continue; // don't bother with empty geometries
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while (!placement_found && placement_options->next_position_only())
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{
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placement text_placement(info, sym, scale_factor_);
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text_placement.avoid_edges = sym.get_avoid_edges();
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if (sym.get_label_placement() == POINT_PLACEMENT ||
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sym.get_label_placement() == INTERIOR_PLACEMENT)
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{
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double label_x, label_y, z=0.0;
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if (sym.get_label_placement() == POINT_PLACEMENT)
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geom.label_position(&label_x, &label_y);
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else
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geom.label_interior_position(&label_x, &label_y);
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prj_trans.backward(label_x,label_y, z);
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t_.forward(&label_x,&label_y);
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double angle = 0.0;
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expression_ptr angle_expr = sym.get_orientation();
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if (angle_expr)
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{
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// apply rotation
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value_type result = boost::apply_visitor(evaluate<Feature,value_type>(feature),*angle_expr);
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angle = result.to_double();
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}
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finder.find_point_placement(text_placement, placement_options,
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label_x, label_y,
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angle, sym.get_line_spacing(),
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sym.get_character_spacing());
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finder.update_detector(text_placement);
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}
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else if ( geom.num_points() > 1 && sym.get_label_placement() == LINE_PLACEMENT)
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{
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path_type path(t_,geom,prj_trans);
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finder.find_line_placements<path_type>(text_placement, placement_options, path);
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}
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if (!text_placement.placements.size()) continue;
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placement_found = true;
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for (unsigned int ii = 0; ii < text_placement.placements.size(); ++ii)
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{
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double x = text_placement.placements[ii].starting_x;
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double y = text_placement.placements[ii].starting_y;
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ren.prepare_glyphs(&text_placement.placements[ii]);
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ren.render_id(feature.id(),x,y,2);
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}
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}
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}
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double x = placement->placements[ii].starting_x;
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double y = placement->placements[ii].starting_y;
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ren.prepare_glyphs(&(placement->placements[ii]));
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ren.render_id(feature.id(),x,y,2);
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}
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if (placement_found)
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pixmap_.add_feature(feature);
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#endif
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pixmap_.add_feature(feature);
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}
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template void grid_renderer<grid>::process(text_symbolizer const&,
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