move displacement_evaluator_ initialisation

c++ style fixes

include/mapnik/text/text_properties.hpp

@@ -93,7 +93,12 @@ struct MAPNIK_DECL text_layout_properties
     horizontal_alignment_e halign;
     justify_alignment_e jalign;
     vertical_alignment_e valign;
-    std::function<pixel_position(feature_impl const& feature, attributes const& attrs)> displacement_evaluator_;
+    std::function<pixel_position(feature_impl const& feature, attributes const& attrs)> displacement_evaluator_ =
+        [this](feature_impl const& feature, attributes const& attrs)
+        { double dx_ = boost::apply_visitor(extract_value<value_double>(feature,attrs), dx);
+          double dy_ = boost::apply_visitor(extract_value<value_double>(feature,attrs), dy);
+          return pixel_position(dx_,dy_);};
+;
 };
 
 using text_layout_properties_ptr = std::shared_ptr<text_layout_properties>;
@@ -107,9 +112,9 @@ struct MAPNIK_DECL text_symbolizer_properties
     // Load only placement related values from XML ptree.
     void placement_properties_from_xml(xml_node const& sym);
     // Load all values from XML ptree.
-    void from_xml(xml_node const &sym, fontset_map const& fontsets);
+    void from_xml(xml_node const& node, fontset_map const& fontsets);
     // Save all values to XML ptree (but does not create a new parent node!).
-    void to_xml(boost::property_tree::ptree &node, bool explicit_defaults,
+    void to_xml(boost::property_tree::ptree & node, bool explicit_defaults,
                 text_symbolizer_properties const& dfl = text_symbolizer_properties()) const;
 
     // Takes a feature and produces formated text as output.
@@ -123,7 +128,7 @@ struct MAPNIK_DECL text_symbolizer_properties
     formatting::node_ptr format_tree() const;
     // Get a list of all expressions used in any placement.
     // This function is used to collect attributes.
-    void add_expressions(expression_set &output) const;
+    void add_expressions(expression_set & output) const;
 
     // Per symbolizer options
     label_placement_e label_placement;

src/text/layout.cpp

@@ -92,7 +92,6 @@ void text_layout::layout()
     init_alignment();
 
     // Find text origin.
-    std::cerr << displacement_.x << "," << displacement_.y << " " << this << std::endl;
     displacement_ = scale_factor_ * displacement_ + alignment_offset();
     if (rotate_displacement_) displacement_ = displacement_.rotate(!orientation_);
     // Find layout bounds, expanded for rotation

src/text/placement_finder.cpp

@@ -354,12 +354,8 @@ bool placement_finder::single_line_placement(vertex_cache &pp, text_upright_e or
 
 void placement_finder::path_move_dx(vertex_cache & pp, double dx)
 {
-    //double dx = 0.0;// FIXME info_.properties.layout_defaults.displacement.x * scale_factor_;
-//    if (dx != 0.0)
-    //  {
-        vertex_cache::state state = pp.save_state();
-        if (!pp.move(dx)) pp.restore_state(state);
-        //}
+    vertex_cache::state state = pp.save_state();
+    if (!pp.move(dx)) pp.restore_state(state);
 }
 
 double placement_finder::normalize_angle(double angle)

src/text/placements/list.cpp

@@ -32,11 +32,22 @@ namespace mapnik
 
 bool text_placement_info_list::next()
 {
-    if (state == 0) {
+    if (state == 0)
+    {
         properties = parent_->defaults;
-    } else {
-        if (state >= parent_->list_.size() + 1) return false;
+    }
+    else
+    {
+        if (state  >= parent_->list_.size() + 1) return false;
         properties = parent_->list_[state-1];
+        properties.layout_defaults.displacement_evaluator_ = [this](feature_impl const& feature, attributes const& attrs)
+            {
+                double dx = boost::apply_visitor(extract_value<value_double>(feature,attrs),
+                                                 parent_->list_[state-1].layout_defaults.dx);
+                double dy = boost::apply_visitor(extract_value<value_double>(feature,attrs),
+                                                 parent_->list_[state-1].layout_defaults.dy);
+                return pixel_position(dx,dy);
+            };
     }
     ++state;
     return true;
@@ -71,11 +82,9 @@ text_placements_list::text_placements_list()
 void text_placements_list::add_expressions(expression_set & output) const
 {
     defaults.add_expressions(output);
-
-    std::vector<text_symbolizer_properties>::const_iterator it;
-    for (it=list_.begin(); it != list_.end(); it++)
+    for (auto & prop : list_)
     {
-        it->add_expressions(output);
+        prop.add_expressions(output);
     }
 }
 
@@ -87,24 +96,24 @@ unsigned text_placements_list::size() const
 text_placements_ptr text_placements_list::from_xml(xml_node const& xml, fontset_map const & fontsets)
 {
     using boost::property_tree::ptree;
-    text_placements_list *list = new text_placements_list;
-    text_placements_ptr ptr = text_placements_ptr(list);
+    auto list = std::make_shared<text_placements_list>();
+
     list->defaults.from_xml(xml, fontsets);
-    xml_node::const_iterator itr = xml.begin();
-    xml_node::const_iterator end = xml.end();
-    for( ;itr != end; ++itr)
+    for (auto const& node : xml)
     {
-        if (itr->is_text() || !itr->is("Placement")) continue;
+        if (node.is_text() || !node.is("Placement")) continue;
         text_symbolizer_properties & p = list->add();
-        p.format = std::make_shared<char_properties>(*(p.format)); //Make a deep copy
+        p.format = std::make_shared<char_properties>(*(p.format)); //Make a deep copy <-- FIXME
+
         //p.layout_defaults = std::make_shared<text_layout_properties>(*(p.layout_defaults));
         //TODO: This needs a real copy constructor for text_symbolizer_properties
-        p.from_xml(*itr, fontsets);
-//TODO:        if (strict_ &&
+        p.from_xml(node, fontsets);
+
+//TODO: if (strict_ &&
 //                !p.format.fontset.size())
 //            ensure_font_face(p.format.face_name);
     }
-    return ptr;
+    return list;
 }
 
 } //ns mapnik

src/text/text_properties.cpp

@@ -200,7 +200,6 @@ void set_property_from_xml(symbolizer_base::value_type & val, char const* name,
     try
     {
         optional<target_type> val_ = node.get_opt_attr<target_type>(name);
-        if (val_) std::cerr << std::string(name) << ":" << *val_ << std::endl;
         if (val_) val = *val_;
     }
     catch (config_error const& ex)
@@ -218,31 +217,24 @@ text_layout_properties::text_layout_properties()
     : halign(H_AUTO),
       jalign(J_AUTO),
       valign(V_AUTO)
-{
-    displacement_evaluator_ = [this](feature_impl const& feature, attributes const& attrs)
-        { double dx_ = boost::apply_visitor(extract_value<value_double>(feature,attrs), this->dx);
-          double dy_ = boost::apply_visitor(extract_value<value_double>(feature,attrs), this->dy);
-          std::cerr << dx_ << "," << dy_ << std::endl;
-          return pixel_position(dx_,dy_);};
-
-}
+{}
 
 void text_layout_properties::from_xml(xml_node const &node)
 {
     set_property_from_xml<double>(dx, "dx", node);
     set_property_from_xml<double>(dy, "dy", node);
+    set_property_from_xml<double>(text_ratio, "text-ratio", node);
+    set_property_from_xml<double>(wrap_width, "wrap-width", node);
+    set_property_from_xml<boolean>(wrap_before, "wrap-before", node);
+    set_property_from_xml<boolean>(rotate_displacement, "rotate-displacement", node);
+    set_property_from_xml<double>(orientation, "orientation", node);
+    //
     optional<vertical_alignment_e> valign_ = node.get_opt_attr<vertical_alignment_e>("vertical-alignment");
     if (valign_) valign = *valign_;
     optional<horizontal_alignment_e> halign_ = node.get_opt_attr<horizontal_alignment_e>("horizontal-alignment");
     if (halign_) halign = *halign_;
     optional<justify_alignment_e> jalign_ = node.get_opt_attr<justify_alignment_e>("justify-alignment");
     if (jalign_) jalign = *jalign_;
-
-    set_property_from_xml<double>(text_ratio, "text-ratio", node);
-    set_property_from_xml<double>(wrap_width, "wrap-width", node);
-    set_property_from_xml<boolean>(wrap_before, "wrap-before", node);
-    set_property_from_xml<boolean>(rotate_displacement, "rotate-displacement", node);
-    set_property_from_xml<double>(orientation, "orientation", node);
 }
 
 void text_layout_properties::to_xml(boost::property_tree::ptree & node,