Add debug symbolizer.

include/mapnik/agg_renderer.hpp

@@ -106,6 +106,9 @@ public:
     void process(markers_symbolizer const& sym,
                  mapnik::feature_impl & feature,
                  proj_transform const& prj_trans);
+    void process(debug_symbolizer const& sym,
+                 feature_impl & feature,
+                 proj_transform const& prj_trans);
 
     inline bool process(rule::symbolizers const& /*syms*/,
                         mapnik::feature_impl & /*feature*/,

include/mapnik/debug_symbolizer.hpp

@@ -0,0 +1,39 @@
+/*****************************************************************************
+ *
+ * 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
+ *
+ *****************************************************************************/
+
+#ifndef MAPNIK_DEBUG_SYMBOLIZER_HPP
+#define MAPNIK_DEBUG_SYMBOLIZER_HPP
+
+#include <mapnik/config.hpp>
+#include <mapnik/symbolizer.hpp>
+
+namespace mapnik
+{
+
+struct MAPNIK_DECL debug_symbolizer :
+        public symbolizer_base
+{
+    debug_symbolizer() : symbolizer_base() {}
+};
+}
+
+#endif // DEBUG_SYMBOLIZER_HPP

include/mapnik/rule.hpp

@@ -34,6 +34,7 @@
 #include <mapnik/shield_symbolizer.hpp>
 #include <mapnik/text_symbolizer.hpp>
 #include <mapnik/markers_symbolizer.hpp>
+#include <mapnik/debug_symbolizer.hpp>
 #include <mapnik/feature.hpp>
 #include <mapnik/expression.hpp>
 #include <mapnik/expression_string.hpp>
@@ -108,6 +109,12 @@ inline bool operator==(markers_symbolizer const& lhs,
     return (&lhs == &rhs);
 }
 
+inline bool operator==(debug_symbolizer const& lhs,
+                       debug_symbolizer const& rhs)
+{
+    return (&lhs == &rhs);
+}
+
 typedef boost::variant<point_symbolizer,
                        line_symbolizer,
                        line_pattern_symbolizer,
@@ -117,7 +124,8 @@ typedef boost::variant<point_symbolizer,
                        shield_symbolizer,
                        text_symbolizer,
                        building_symbolizer,
-                       markers_symbolizer> symbolizer;
+                       markers_symbolizer,
+                       debug_symbolizer> symbolizer;
 
 class rule
 {

src/agg/process_debug_symbolizer.cpp

@@ -0,0 +1,66 @@
+/*****************************************************************************
+ *
+ * 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/agg_renderer.hpp>
+#include <mapnik/agg_rasterizer.hpp>
+#include <mapnik/graphics.hpp>
+#include "agg_renderer_primitives.h"
+
+namespace mapnik {
+
+void draw_rect(image_32 &pixmap, box2d<double> const& box)
+{
+    double x0 = box.minx();
+    double x1 = box.maxx();
+    double y0 = box.miny();
+    double y1 = box.maxy();
+    unsigned color1 = 0xff0000ff;
+    for (double x=x0; x<x1; x++)
+    {
+        pixmap.setPixel(x, y0, color1);
+        pixmap.setPixel(x, y1, color1);
+    }
+    for (double y=y0; y<y1; y++)
+    {
+        pixmap.setPixel(x0, y, color1);
+        pixmap.setPixel(x1, y, color1);
+    }
+}
+
+template <typename T>
+void agg_renderer<T>::process(debug_symbolizer const& sym,
+                              mapnik::feature_impl & feature,
+                              proj_transform const& prj_trans)
+{
+    label_collision_detector4::query_iterator itr = detector_->begin(), end = detector_->end();
+    for (;itr!=end; itr++)
+    {
+        draw_rect(pixmap_, itr->box);
+    }
+}
+
+template void agg_renderer<image_32>::process(debug_symbolizer const&,
+                                              mapnik::feature_impl &,
+                                              proj_transform const&);
+}
+

src/build.py

@@ -258,6 +258,7 @@ source += Split(
     agg/process_raster_symbolizer.cpp
     agg/process_shield_symbolizer.cpp
     agg/process_markers_symbolizer.cpp
+    agg/process_debug_symbolizer.cpp
     """
     )
 

src/load_map.cpp

@@ -109,6 +109,7 @@ private:
     void parse_building_symbolizer(rule & rule, xml_node const& sym);
     void parse_raster_symbolizer(rule & rule, xml_node const& sym);
     void parse_markers_symbolizer(rule & rule, xml_node const& sym);
+    void parse_debug_symbolizer(rule & rule, xml_node const& sym);
 
     void parse_raster_colorizer(raster_colorizer_ptr const& rc, xml_node const& node);
     bool parse_stroke(stroke & strk, xml_node const & sym);
@@ -806,6 +807,10 @@ void map_parser::parse_rule(feature_type_style & style, xml_node const& r)
             {
                 parse_markers_symbolizer(rule, *symIter);
             }
+            else if (symIter->is("DebugSymbolizer"))
+            {
+                parse_debug_symbolizer(rule, *symIter);
+            }
         }
         style.add_rule(rule);
 
@@ -1536,6 +1541,14 @@ void map_parser::parse_raster_symbolizer(rule & rule, xml_node const & sym)
     }
 }
 
+void map_parser::parse_debug_symbolizer(rule & rule, xml_node const & sym)
+{
+    debug_symbolizer symbol;
+
+    parse_symbolizer_base(symbol, sym);
+    rule.append(symbol);
+}
+
 void map_parser::parse_raster_colorizer(raster_colorizer_ptr const& rc,
                                         xml_node const& node)
 {