return correct height for svg vector

bindings/python/mapnik_marker_cache.cpp

@@ -0,0 +1,99 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2006 Artem Pavlenko, Jean-Francois Doyon
+ *
+ * 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
+ *
+ *****************************************************************************/
+
+#include <mapnik/utils.hpp>
+#include <mapnik/marker.hpp>
+#include <mapnik/marker_cache.hpp>
+#include <mapnik/graphics.hpp>
+
+// boost
+#include <boost/make_shared.hpp>
+#include <boost/python.hpp>
+#include <boost/noncopyable.hpp>
+
+namespace {
+
+bool add_marker_from_image(mapnik::marker_cache & cache, std::string const& uri, mapnik::image_32 const& im)
+{
+    boost::optional<mapnik::image_ptr> imagep(boost::make_shared<mapnik::image_data_32>(im.data()));
+    return cache.insert_marker(uri,boost::make_shared<mapnik::marker>(imagep),true);
+}
+
+bool add_marker_from_svg(mapnik::marker_cache & cache, std::string const& uri, mapnik::svg_storage_type const& svg)
+{
+    mapnik::svg_path_ptr marker_path(boost::make_shared<mapnik::svg_storage_type>(svg));
+    return cache.insert_marker(uri,boost::make_shared<mapnik::marker>(marker_path),true);
+}
+
+boost::python::object get_marker(boost::shared_ptr<mapnik::marker_cache> const& cache, std::string const& uri)
+{
+    mapnik::marker_cache::iterator_type itr = cache->search(uri);
+    mapnik::marker_cache::iterator_type end = cache->end();
+    if (itr != end)
+    {
+        if (itr->second->is_bitmap())
+        {
+            mapnik::image_data_32 const& im = *itr->second->get_bitmap_data()->get();
+            return boost::python::object(boost::make_shared<mapnik::image_32>(im));
+        }
+        return boost::python::object(*(itr->second->get_vector_data()));
+    }
+    return boost::python::object();
+}
+
+boost::python::list get_keys(boost::shared_ptr<mapnik::marker_cache> const& cache)
+{
+    boost::python::list l;
+    mapnik::marker_cache::iterator_type itr = cache->begin();
+    mapnik::marker_cache::iterator_type end = cache->end();
+    for (;itr != end; ++itr)
+    {
+        l.append(itr->first);
+    }
+    return l;
+}
+
+}
+
+void export_marker_cache()
+{
+    using mapnik::marker_cache;
+    using mapnik::singleton;
+    using mapnik::CreateUsingNew;
+    using namespace boost::python;
+    class_<singleton<marker_cache,CreateUsingNew>,boost::noncopyable>("Singleton",no_init)
+        .def("instance",&singleton<marker_cache,CreateUsingNew>::instance,
+             return_value_policy<reference_existing_object>())
+        .staticmethod("instance")
+        ;
+
+    class_<marker_cache,bases<singleton<marker_cache,CreateUsingNew> >,
+        boost::noncopyable>("MarkerCache",no_init)
+        .def("clear",&marker_cache::clear)
+        .def("remove",&marker_cache::remove)
+        .def("size",&marker_cache::size)
+        .def("put",&add_marker_from_image)
+        .def("put",&add_marker_from_svg)
+        .def("get",&get_marker)
+        .def("keys",&get_keys)
+        ;
+}

bindings/python/mapnik_python.cpp

@@ -34,6 +34,7 @@ void export_envelope();
 void export_query();
 void export_geometry();
 void export_palette();
+void export_svg();
 void export_image();
 void export_image_view();
 void export_gamma_method();
@@ -64,6 +65,7 @@ void export_text_placement();
 void export_shield_symbolizer();
 void export_debug_symbolizer();
 void export_font_engine();
+void export_marker_cache();
 void export_projection();
 void export_proj_transform();
 void export_view_transform();
@@ -441,6 +443,7 @@ BOOST_PYTHON_MODULE(_mapnik)
     export_color();
     export_envelope();
     export_palette();
+    export_svg();
     export_image();
     export_image_view();
     export_gamma_method();
@@ -466,6 +469,7 @@ BOOST_PYTHON_MODULE(_mapnik)
     export_shield_symbolizer();
     export_debug_symbolizer();
     export_font_engine();
+    export_marker_cache();
     export_projection();
     export_proj_transform();
     export_view_transform();

bindings/python/mapnik_svg.cpp

@@ -0,0 +1,62 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2006 Artem Pavlenko, Jean-Francois Doyon
+ *
+ * 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
+ *
+ *****************************************************************************/
+
+// boost
+#include <boost/python.hpp>
+#include <boost/python/module.hpp>
+#include <boost/python/def.hpp>
+#include <boost/make_shared.hpp>
+
+// mapnik
+#include <mapnik/marker.hpp>
+
+namespace {
+
+mapnik::svg_path_ptr open_from_file(std::string const& filename)
+{
+     return mapnik::read_svg_marker(filename);
+}
+
+mapnik::svg_path_ptr fromstring(std::string const& svg)
+{
+     return mapnik::read_svg_marker(svg,true);
+}
+
+}
+
+void export_svg()
+{
+    using namespace boost::python;
+    using mapnik::svg_storage_type;
+
+    class_<svg_storage_type,boost::shared_ptr<svg_storage_type> >("SVG","This class represents an svg object.",no_init)
+        .def("width",&svg_storage_type::width)
+        .def("height",&svg_storage_type::height)
+        .def("extent",make_function(&svg_storage_type::bounding_box,
+                           return_value_policy<copy_const_reference>()))
+        .def("open",&open_from_file)
+        .staticmethod("open")
+        .def("fromstring",&fromstring)
+        .staticmethod("fromstring")
+        ;
+
+}

include/mapnik/graphics.hpp

@@ -57,6 +57,7 @@ private:
 public:
     image_32(int width,int height);
     image_32(image_32 const& rhs);
+    explicit image_32(image_data_32 const& rhs);
 #ifdef HAVE_CAIRO
     explicit image_32(cairo_surface_ptr const& surface);
 #endif

include/mapnik/image_reader.hpp

@@ -62,6 +62,19 @@ struct MAPNIK_DECL image_reader : private mapnik::noncopyable
     virtual ~image_reader() {}
 };
 
+struct image_reader_guard
+{
+    image_reader_guard(image_reader * reader)
+        : r_(reader) {}
+
+    ~image_reader_guard()
+    {
+        if (r_) delete r_;
+    }
+    image_reader * r_;
+};
+
+
 bool register_image_reader(std::string const& type,image_reader* (*)(std::string const&));
 bool register_image_reader(std::string const& type,image_reader* (*)(char const*, std::size_t));
 

include/mapnik/marker.hpp

@@ -27,18 +27,13 @@
 #include <mapnik/global.hpp>
 #include <mapnik/image_data.hpp>
 #include <mapnik/svg/svg_path_attributes.hpp>
-#include <mapnik/svg/svg_storage.hpp>
 #include <mapnik/svg/svg_path_adapter.hpp>
+#include <mapnik/svg/svg_storage.hpp>
 #include <mapnik/noncopyable.hpp>
 
-// agg
-#include "agg_path_storage.h"
-
 // boost
-#include <boost/unordered_map.hpp>
 #include <boost/shared_ptr.hpp>
 #include <boost/optional.hpp>
-#include <boost/make_shared.hpp>
 
 // stl
 #include <cassert>
@@ -51,6 +46,14 @@ typedef agg::pod_bvector<mapnik::svg::path_attributes> attr_storage;
 typedef mapnik::svg::svg_storage<mapnik::svg::svg_path_storage,attr_storage> svg_storage_type;
 typedef boost::shared_ptr<svg_storage_type> svg_path_ptr;
 typedef boost::shared_ptr<image_data_32> image_ptr;
+
+class marker;
+
+typedef boost::shared_ptr<marker> marker_ptr;
+
+mapnik::svg_path_ptr read_svg_marker(std::string const& uri, bool from_string=false);
+mapnik::image_ptr read_bitmap_marker(std::string const& uri, bool from_string=false);
+
 /**
  * A class to hold either vector or bitmap marker data. This allows these to be treated equally
  * in the image caches and most of the render paths.
@@ -58,96 +61,24 @@ typedef boost::shared_ptr<image_data_32> image_ptr;
 class marker: private mapnik::noncopyable
 {
 public:
-    marker()
-    {
-        // create default OGC 4x4 black pixel
-        bitmap_data_ = boost::optional<mapnik::image_ptr>(boost::make_shared<image_data_32>(4,4));
-        (*bitmap_data_)->set(0xff000000);
-    }
-
-    marker(boost::optional<mapnik::image_ptr> const& data)
-        : bitmap_data_(data)
-    {
-
-    }
-
-    marker(boost::optional<mapnik::svg_path_ptr> const& data)
-        : vector_data_(data)
-    {
-
-    }
-
-    marker(marker const& rhs)
-        : bitmap_data_(rhs.bitmap_data_),
-          vector_data_(rhs.vector_data_)
-    {}
-
-    box2d<double> bounding_box() const
-    {
-        if (is_vector())
-        {
-            return (*vector_data_)->bounding_box();
-        }
-        if (is_bitmap())
-        {
-            double width = (*bitmap_data_)->width();
-            double height = (*bitmap_data_)->height();
-            return box2d<double>(0, 0, width, height);
-        }
-        return box2d<double>();
-    }
-
-    inline double width() const
-    {
-        if (is_bitmap())
-        {
-            return (*bitmap_data_)->width();
-        }
-        else if (is_vector())
-        {
-            return (*vector_data_)->bounding_box().width();
-        }
-        return 0;
-    }
-    inline double height() const
-    {
-        if (is_bitmap())
-        {
-            return (*bitmap_data_)->height();
-        }
-        else if (is_vector())
-        {
-            return (*vector_data_)->bounding_box().height();
-        }
-        return 0;
-    }
-
-    inline bool is_bitmap() const
-    {
-        return bitmap_data_;
-    }
-
-    inline bool is_vector() const
-    {
-        return vector_data_;
-    }
-
-    boost::optional<mapnik::image_ptr> get_bitmap_data() const
-    {
-        return bitmap_data_;
-    }
-
-    boost::optional<mapnik::svg_path_ptr> get_vector_data() const
-    {
-        return vector_data_;
-    }
-
+    marker();
+    marker(boost::optional<mapnik::image_ptr> const& data);
+    marker(boost::optional<mapnik::svg_path_ptr> const& data);
+    marker(marker const& rhs);
+    box2d<double> bounding_box() const;
+    double width() const;
+    double height() const;
+    bool is_bitmap() const;
+    bool is_vector() const;
+    boost::optional<mapnik::image_ptr> get_bitmap_data() const;
+    boost::optional<mapnik::svg_path_ptr> get_vector_data() const;
 private:
     boost::optional<mapnik::image_ptr> bitmap_data_;
     boost::optional<mapnik::svg_path_ptr> vector_data_;
 
 };
 
+
 }
 
 #endif // MAPNIK_MARKER_HPP

include/mapnik/marker_cache.hpp

@@ -24,6 +24,7 @@
 #define MAPNIK_MARKER_CACHE_HPP
 
 // mapnik
+#include <mapnik/marker.hpp>
 #include <mapnik/utils.hpp>
 #include <mapnik/config.hpp>
 #include <mapnik/noncopyable.hpp>
@@ -36,11 +37,6 @@
 namespace mapnik
 {
 
-class marker;
-
-typedef boost::shared_ptr<marker> marker_ptr;
-
-
 class MAPNIK_DECL marker_cache :
         public singleton <marker_cache, CreateUsingNew>,
         private mapnik::noncopyable
@@ -49,15 +45,24 @@ class MAPNIK_DECL marker_cache :
 private:
     marker_cache();
     ~marker_cache();
-    bool insert_marker(std::string const& key, marker_ptr path);
     boost::unordered_map<std::string,marker_ptr> marker_cache_;
-    bool insert_svg(std::string const& name, std::string const& svg_string);
-    boost::unordered_map<std::string,std::string> svg_cache_;
 public:
+    typedef boost::unordered_map<std::string, marker_ptr>::const_iterator iterator_type;
+    typedef boost::unordered_map<std::string, marker_ptr>::size_type size_type;
+    bool insert_marker(std::string const& key, marker_ptr path, bool override=false);
     std::string known_svg_prefix_;
+    std::string known_image_prefix_;
+    void init();
     bool is_uri(std::string const& path);
-    boost::optional<marker_ptr> find(std::string const& key, bool update_cache = false);
+    bool is_svg_uri(std::string const& path);
+    bool is_image_uri(std::string const& path);
+    boost::optional<marker_ptr> find(std::string const& uri, bool update_cache = false);
+    iterator_type search(std::string const& uri) const { return marker_cache_.find(uri); }
     void clear();
+    bool remove(std::string const& uri);
+    size_type size() const { return marker_cache_.size(); }
+    iterator_type begin() const { return marker_cache_.begin(); }
+    iterator_type end() const { return marker_cache_.end(); }
 };
 
 }

include/mapnik/svg/svg_parser.hpp

@@ -24,9 +24,7 @@
 #define MAPNIK_SVG_PARSER_HPP
 
 // mapnik
-#include <mapnik/svg/svg_path_attributes.hpp>
 #include <mapnik/svg/svg_converter.hpp>
-#include <mapnik/svg/svg_path_adapter.hpp>
 #include <mapnik/gradient.hpp>
 #include <mapnik/noncopyable.hpp>
 

include/mapnik/svg/svg_storage.hpp

@@ -25,19 +25,28 @@
 
 // mapnik
 #include <mapnik/box2d.hpp>
-#include <mapnik/noncopyable.hpp>
 
 namespace mapnik {
 namespace svg {
 
-template <typename VertexSource ,typename AttributeSource>
-class svg_storage :  mapnik::noncopyable
+template <typename VertexSource,typename AttributeSource>
+class svg_storage
 {
 public:
     svg_storage() :
+      source_(),
+      attributes_(),
+      bounding_box_(),
       svg_width_(0),
       svg_height_(0) {}
 
+    svg_storage(svg_storage const& rhs)
+        : source_(rhs.source_),
+          attributes_(rhs.attributes_),
+          bounding_box_(rhs.bounding_box_),
+          svg_width_(rhs.svg_width_),
+          svg_height_(rhs.svg_height_) {}
+
     VertexSource & source() // FIXME!! make const
     {
         return source_;

src/build.py

@@ -109,6 +109,7 @@ else: # unix, non-macos
 
 source = Split(
     """
+    marker.cpp
     debug_symbolizer.cpp
     request.cpp
     well_known_srs.cpp

src/graphics.cpp

@@ -51,7 +51,13 @@ image_32::image_32(const image_32& rhs)
     :width_(rhs.width_),
      height_(rhs.height_),
      data_(rhs.data_),
-     painted_(rhs.painted_)  {}
+     painted_(rhs.painted_) {}
+
+image_32::image_32(const image_data_32& rhs)
+    :width_(rhs.width()),
+     height_(rhs.height()),
+     data_(rhs),
+     painted_(false) {}
 
 #ifdef HAVE_CAIRO
 image_32::image_32(cairo_surface_ptr const& surface)

src/marker.cpp

@@ -0,0 +1,168 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2013 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/marker.hpp>
+#include <mapnik/svg/svg_converter.hpp>
+#include <mapnik/svg/svg_path_adapter.hpp>
+#include <mapnik/svg/svg_parser.hpp>
+#include <mapnik/image_util.hpp>
+#include <mapnik/image_reader.hpp>
+
+// agg
+#include "agg_rendering_buffer.h"
+#include "agg_pixfmt_rgba.h"
+
+// boost
+#include <boost/make_shared.hpp>
+
+namespace mapnik
+{
+
+mapnik::svg_path_ptr read_svg_marker(std::string const& uri, bool from_string)
+{
+    using namespace mapnik::svg;
+    svg_path_ptr marker_path(boost::make_shared<svg_storage_type>());
+    vertex_stl_adapter<svg_path_storage> stl_storage(marker_path->source());
+    svg_path_adapter svg_path(stl_storage);
+    svg_converter_type svg(svg_path, marker_path->attributes());
+    svg_parser p(svg);
+    if (from_string)
+    {
+        p.parse_from_string(uri);
+    }
+    else
+    {
+        p.parse(uri);
+    }
+    double lox,loy,hix,hiy;
+    svg.bounding_rect(&lox, &loy, &hix, &hiy);
+    marker_path->set_bounding_box(lox,loy,hix,hiy);
+    marker_path->set_dimensions(svg.width(),svg.height());
+    return marker_path;
+}
+
+mapnik::image_ptr read_bitmap_marker(std::string const& uri, bool from_string)
+{
+    mapnik::image_reader * reader = NULL;
+    mapnik::image_reader_guard guard(reader);
+    if (from_string)
+    {
+        reader = mapnik::get_image_reader(uri.data(),uri.size());
+    }
+    else
+    {
+        reader = mapnik::get_image_reader(uri);
+    }
+    if (!reader) throw std::runtime_error("could not intialize reader for: '" + uri + "'");
+    unsigned width = reader->width();
+    unsigned height = reader->height();
+    BOOST_ASSERT(width > 0 && height > 0);
+    mapnik::image_ptr image(boost::make_shared<mapnik::image_data_32>(width,height));
+    reader->read(0,0,*image);
+    if (!reader->premultiplied_alpha())
+    {
+        agg::rendering_buffer buffer(image->getBytes(),image->width(),image->height(),image->width() * 4);
+        agg::pixfmt_rgba32 pixf(buffer);
+        pixf.premultiply();
+    }
+    return image;
+}
+
+
+marker::marker()
+{
+    // create default OGC 4x4 black pixel
+    bitmap_data_ = boost::optional<mapnik::image_ptr>(boost::make_shared<image_data_32>(4,4));
+    (*bitmap_data_)->set(0xff000000);
+}
+
+marker::marker(boost::optional<mapnik::image_ptr> const& data)
+    : bitmap_data_(data)
+{
+}
+
+marker::marker(boost::optional<mapnik::svg_path_ptr> const& data)
+    : vector_data_(data)
+{
+}
+
+marker::marker(marker const& rhs)
+    : bitmap_data_(rhs.bitmap_data_),
+      vector_data_(rhs.vector_data_)
+{}
+
+box2d<double> marker::bounding_box() const
+{
+    if (is_vector())
+    {
+        return (*vector_data_)->bounding_box();
+    }
+    if (is_bitmap())
+    {
+        double width = (*bitmap_data_)->width();
+        double height = (*bitmap_data_)->height();
+        return box2d<double>(0, 0, width, height);
+    }
+    return box2d<double>();
+}
+
+
+double marker::width() const
+{
+    if (is_bitmap())
+        return (*bitmap_data_)->width();
+    else if (is_vector())
+        return (*vector_data_)->bounding_box().width();
+    return 0;
+}
+
+double marker::height() const
+{
+    if (is_bitmap())
+        return (*bitmap_data_)->height();
+    else if (is_vector())
+        return (*vector_data_)->bounding_box().height();
+    return 0;
+}
+
+bool marker::is_bitmap() const
+{
+    return bitmap_data_;
+}
+
+bool marker::is_vector() const
+{
+    return vector_data_;
+}
+
+boost::optional<mapnik::image_ptr> marker::get_bitmap_data() const
+{
+    return bitmap_data_;
+}
+
+boost::optional<mapnik::svg_path_ptr> marker::get_vector_data() const
+{
+    return vector_data_;
+}
+
+}

src/marker_cache.cpp

@@ -24,13 +24,7 @@
 #include <mapnik/debug.hpp>
 #include <mapnik/marker.hpp>
 #include <mapnik/marker_cache.hpp>
-#include <mapnik/svg/svg_parser.hpp>
-#include <mapnik/svg/svg_storage.hpp>
-#include <mapnik/svg/svg_converter.hpp>
-#include <mapnik/svg/svg_path_adapter.hpp>
-#include <mapnik/svg/svg_path_attributes.hpp>
 #include <mapnik/image_util.hpp>
-#include <mapnik/image_reader.hpp>
 
 // boost
 #include <boost/assert.hpp>
@@ -38,36 +32,39 @@
 #include <boost/algorithm/string.hpp>
 #include <boost/make_shared.hpp>
 
-// agg
-#include "agg_rendering_buffer.h"
-#include "agg_pixfmt_rgba.h"
-
 namespace mapnik
 {
 
 marker_cache::marker_cache()
-    : known_svg_prefix_("shape://")
+    : known_svg_prefix_("shape://"),
+      known_image_prefix_("image://")
 {
-    insert_svg("ellipse",
-               "<?xml version='1.0' standalone='no'?>"
-               "<svg width='100%' height='100%' version='1.1' xmlns='http://www.w3.org/2000/svg'>"
-               "<ellipse rx='5' ry='5' fill='#0000FF' stroke='black' stroke-width='.5'/>"
-               "</svg>");
-    insert_svg("arrow",
-               "<?xml version='1.0' standalone='no'?>"
-               "<svg width='100%' height='100%' version='1.1' xmlns='http://www.w3.org/2000/svg'>"
-               "<path fill='#0000FF' stroke='black' stroke-width='.5' d='m 31.698405,7.5302648 -8.910967,-6.0263712 0.594993,4.8210971 -18.9822542,0 0,2.4105482 18.9822542,0 -0.594993,4.8210971 z'/>"
-               "</svg>");
+    init();
 }
 
 marker_cache::~marker_cache() {}
 
+void marker_cache::init()
+{
+    std::string ellipse =
+               "<?xml version='1.0' standalone='no'?>"
+               "<svg width='100%' height='100%' version='1.1' xmlns='http://www.w3.org/2000/svg'>"
+               "<ellipse rx='5' ry='5' fill='#0000FF' stroke='black' stroke-width='.5'/>"
+               "</svg>";
+    marker_cache_.insert(std::make_pair("shape://ellipse",boost::make_shared<marker>(read_svg_marker(ellipse,true))));
+    std::string arrow =
+               "<?xml version='1.0' standalone='no'?>"
+               "<svg width='100%' height='100%' version='1.1' xmlns='http://www.w3.org/2000/svg'>"
+               "<path fill='#0000FF' stroke='black' stroke-width='.5' d='m 31.698405,7.5302648 -8.910967,-6.0263712 0.594993,4.8210971 -18.9822542,0 0,2.4105482 18.9822542,0 -0.594993,4.8210971 z'/>"
+               "</svg>";
+    marker_cache_.insert(std::make_pair("shape://arrow",boost::make_shared<marker>(read_svg_marker(arrow,true))));
+}
+
 void marker_cache::clear()
 {
 #ifdef MAPNIK_THREADSAFE
     mutex::scoped_lock lock(mutex_);
 #endif
-    typedef boost::unordered_map<std::string, marker_ptr>::const_iterator iterator_type;
     iterator_type itr = marker_cache_.begin();
     while(itr != marker_cache_.end())
     {
@@ -82,147 +79,103 @@ void marker_cache::clear()
     }
 }
 
-bool marker_cache::is_uri(std::string const& path)
-{
-    return boost::algorithm::starts_with(path,known_svg_prefix_);
-}
-
-bool marker_cache::insert_svg(std::string const& name, std::string const& svg_string)
-{
-    std::string key = known_svg_prefix_ + name;
-    typedef boost::unordered_map<std::string, std::string>::const_iterator iterator_type;
-    iterator_type itr = svg_cache_.find(key);
-    if (itr == svg_cache_.end())
-    {
-        return svg_cache_.insert(std::make_pair(key,svg_string)).second;
-    }
-    return false;
-}
-
-bool marker_cache::insert_marker(std::string const& uri, marker_ptr path)
+bool marker_cache::remove(std::string const& uri)
 {
 #ifdef MAPNIK_THREADSAFE
     mutex::scoped_lock lock(mutex_);
 #endif
-    return marker_cache_.insert(std::make_pair(uri,path)).second;
+    iterator_type itr = marker_cache_.find(uri);
+    if (itr != marker_cache_.end())
+    {
+        marker_cache_.erase(itr);
+        return true;
+    }
+    return false;
+}
+
+bool marker_cache::is_uri(std::string const& uri)
+{
+    return is_svg_uri(uri) || is_image_uri(uri);
+}
+
+bool marker_cache::is_svg_uri(std::string const& uri)
+{
+    return boost::algorithm::starts_with(uri,known_svg_prefix_);
+}
+
+bool marker_cache::is_image_uri(std::string const& uri)
+{
+    return boost::algorithm::starts_with(uri,known_image_prefix_);
+}
+
+bool marker_cache::insert_marker(std::string const& uri, marker_ptr path, bool override)
+{
+#ifdef MAPNIK_THREADSAFE
+    mutex::scoped_lock lock(mutex_);
+#endif
+    if (!override)
+    {
+        return marker_cache_.insert(std::make_pair(uri,path)).second;
+    }
+    else
+    {
+        typedef boost::unordered_map<std::string, marker_ptr>::iterator non_const_iterator_type;
+        std::pair<non_const_iterator_type,bool> result = marker_cache_.insert(std::make_pair(uri,path));
+        if (!result.second)
+        {
+            result.first->second = path;
+        }
+        return result.second;
+    }
 }
 
 boost::optional<marker_ptr> marker_cache::find(std::string const& uri,
                                                bool update_cache)
 {
-
     boost::optional<marker_ptr> result;
     if (uri.empty())
     {
         return result;
     }
-
 #ifdef MAPNIK_THREADSAFE
     mutex::scoped_lock lock(mutex_);
 #endif
-    typedef boost::unordered_map<std::string, marker_ptr>::const_iterator iterator_type;
     iterator_type itr = marker_cache_.find(uri);
     if (itr != marker_cache_.end())
     {
         result.reset(itr->second);
         return result;
     }
-
     try
     {
-        // if uri references a built-in marker
-        if (is_uri(uri))
+        if (boost::filesystem::exists(boost::filesystem::path(uri)))
         {
-            boost::unordered_map<std::string, std::string>::const_iterator mark_itr = svg_cache_.find(uri);
-            if (mark_itr == svg_cache_.end())
+            if (is_svg(uri))
             {
-                MAPNIK_LOG_ERROR(marker_cache) << "Marker does not exist: " << uri;
-                return result;
+                result.reset(boost::make_shared<marker>(read_svg_marker(uri)));
             }
-            std::string known_svg_string = mark_itr->second;
-            using namespace mapnik::svg;
-            svg_path_ptr marker_path(boost::make_shared<svg_storage_type>());
-            vertex_stl_adapter<svg_path_storage> stl_storage(marker_path->source());
-            svg_path_adapter svg_path(stl_storage);
-            svg_converter_type svg(svg_path, marker_path->attributes());
-            svg_parser p(svg);
-            p.parse_from_string(known_svg_string);
-            //svg.arrange_orientations();
-            double lox,loy,hix,hiy;
-            svg.bounding_rect(&lox, &loy, &hix, &hiy);
-            marker_path->set_bounding_box(lox,loy,hix,hiy);
-            marker_path->set_dimensions(svg.width(),svg.height());
-            marker_ptr mark(boost::make_shared<marker>(marker_path));
-            result.reset(mark);
+            else
+            {
+                result.reset(boost::make_shared<marker>(read_bitmap_marker(uri)));
+            }
+        }
+        if (result)
+        {
             if (update_cache)
             {
                 marker_cache_.insert(std::make_pair(uri,*result));
             }
+            return result;
         }
-        // otherwise assume file-based
         else
         {
-            boost::filesystem::path path(uri);
-            if (!exists(path))
-            {
-                MAPNIK_LOG_ERROR(marker_cache) << "Marker does not exist: " << uri;
-                return result;
-            }
-            if (is_svg(uri))
-            {
-                using namespace mapnik::svg;
-                svg_path_ptr marker_path(boost::make_shared<svg_storage_type>());
-                vertex_stl_adapter<svg_path_storage> stl_storage(marker_path->source());
-                svg_path_adapter svg_path(stl_storage);
-                svg_converter_type svg(svg_path, marker_path->attributes());
-                svg_parser p(svg);
-                p.parse(uri);
-                //svg.arrange_orientations();
-                double lox,loy,hix,hiy;
-                svg.bounding_rect(&lox, &loy, &hix, &hiy);
-                marker_path->set_bounding_box(lox,loy,hix,hiy);
-                marker_path->set_dimensions(svg.width(),svg.height());
-                marker_ptr mark(boost::make_shared<marker>(marker_path));
-                result.reset(mark);
-                if (update_cache)
-                {
-                    marker_cache_.insert(std::make_pair(uri,*result));
-                }
-            }
-            else
-            {
-                // TODO - support reading images from string
-                std::auto_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(uri));
-                if (reader.get())
-                {
-                    unsigned width = reader->width();
-                    unsigned height = reader->height();
-                    BOOST_ASSERT(width > 0 && height > 0);
-                    mapnik::image_ptr image(boost::make_shared<mapnik::image_data_32>(width,height));
-                    reader->read(0,0,*image);
-                    if (!reader->premultiplied_alpha())
-                    {
-                        agg::rendering_buffer buffer(image->getBytes(),image->width(),image->height(),image->width() * 4);
-                        agg::pixfmt_rgba32 pixf(buffer);
-                        pixf.premultiply();
-                    }
-                    marker_ptr mark(boost::make_shared<marker>(image));
-                    result.reset(mark);
-                    if (update_cache)
-                    {
-                        marker_cache_.insert(std::make_pair(uri,*result));
-                    }
-                }
-                else
-                {
-                    MAPNIK_LOG_ERROR(marker_cache) << "could not intialize reader for: '" << uri << "'";
-                }
-            }
+            MAPNIK_LOG_ERROR(marker_cache) << "Marker does not exist: " << uri;
+            return result;
         }
     }
     catch (std::exception const& ex)
     {
-        MAPNIK_LOG_ERROR(marker_cache) << "Exception caught while loading: '" << uri << "' (" << ex.what() << ")";
+        MAPNIK_LOG_ERROR(marker_cache) << ex.what();
     }
     return result;
 }

src/svg/svg_parser.cpp

@@ -1060,11 +1060,11 @@ void svg_parser::parse(std::string const& filename)
     xmlTextReaderPtr reader = xmlNewTextReaderFilename(filename.c_str());
     if (reader == NULL)
     {
-        MAPNIK_LOG_ERROR(svg_parser) << "Unable to open '" << filename << "'";
+        throw std::runtime_error("Unable to open '" + filename + "'");
     }
     else if (!parse_reader(*this,reader))
     {
-        MAPNIK_LOG_ERROR(svg_parser) << "Unable to parse '" << filename << "'";
+        throw std::runtime_error("Unable to parse '" + filename + "'");
     }
 }
 
@@ -1074,11 +1074,11 @@ void svg_parser::parse_from_string(std::string const& svg)
         (XML_PARSE_NOBLANKS | XML_PARSE_NOCDATA | XML_PARSE_NOERROR | XML_PARSE_NOWARNING));
     if (reader == NULL)
     {
-        MAPNIK_LOG_ERROR(svg_parser) << "Unable to parse '" << svg << "'";
+        throw std::runtime_error("Unable to parse '" + svg + "'");
     }
     else if (!parse_reader(*this,reader))
     {
-        MAPNIK_LOG_ERROR(svg_parser) << "Unable to parse '" << svg << "'";
+        throw std::runtime_error("Unable to parse '" + svg + "'");
     }
 }
 

tests/python_tests/marker_cache_test.py

@@ -0,0 +1,125 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import os
+from utilities import execution_path
+from nose.tools import *
+import mapnik
+import threading
+
+def setup():
+    # All of the paths used are relative, if we run the tests
+    # from another directory we need to chdir()
+    os.chdir(execution_path('.'))
+
+def test_svg_put_to_marker_cache():
+    cache = mapnik.MarkerCache.instance()
+    cache.clear()
+    eq_(cache.size(),2)
+    svg_file = '../data/svg/octocat.svg'
+    svg = mapnik.SVG.open(svg_file)
+    cache.put(svg_file,svg)
+    eq_(cache.size(),3)
+    eq_(svg_file in cache.keys(),True)
+
+def test_svg_put_and_clear_marker_cache():
+    cache = mapnik.MarkerCache.instance()
+    cache.clear()
+    eq_(cache.size(),2)
+    svg_file = '../data/svg/octocat.svg'
+    svg = mapnik.SVG.open(svg_file)
+    cache.put(svg_file,svg)
+    eq_(cache.size(),3)
+    eq_(svg_file in cache.keys(),True)
+    cache.clear()
+    eq_(svg_file in cache.keys(),False)
+    eq_(cache.size(),2)
+
+def test_svg_put_and_remove_marker_cache():
+    cache = mapnik.MarkerCache.instance()
+    cache.clear()
+    eq_(cache.size(),2)
+    svg_file = '../data/svg/octocat.svg'
+    svg = mapnik.SVG.open(svg_file)
+    cache.put(svg_file,svg)
+    eq_(cache.size(),3)
+    eq_(svg_file in cache.keys(),True)
+    cache.remove(svg_file)
+    eq_(svg_file in cache.keys(),False)
+    eq_(cache.size(),2)
+
+def test_image_put_and_clear_marker_cache():
+    cache = mapnik.MarkerCache.instance()
+    cache.clear()
+    eq_(cache.size(),2)
+    image_file = '../data/images/marker.png'
+    image = mapnik.Image.open(image_file)
+    cache.put(image_file,image)
+    eq_(cache.size(),3)
+    eq_(image_file in cache.keys(),True)
+    cache.clear()
+    eq_(image_file in cache.keys(),False)
+    eq_(cache.size(),2)
+
+def test_image_put_and_clear_marker_cache():
+    cache = mapnik.MarkerCache.instance()
+    cache.clear()
+    eq_(cache.size(),2)
+    image_file = '../data/images/marker.png'
+    image = mapnik.Image.open(image_file)
+    cache.put(image_file,image)
+    eq_(cache.size(),3)
+    eq_(image_file in cache.keys(),True)
+    eq_(cache.remove(image_file),True)
+    # removing twice should return False for no successful removal
+    eq_(cache.remove(image_file),False)
+    eq_(image_file in cache.keys(),False)
+    eq_(cache.size(),2)
+
+def test_image_put_and_get_image_in_marker_cache():
+    cache = mapnik.MarkerCache.instance()
+    cache.clear()
+    eq_(cache.size(),2)
+    image_file = '../data/images/marker.png'
+    image = mapnik.Image.open(image_file)
+    cache.put(image_file,image)
+    new_im = cache.get(image_file)
+    eq_(image.tostring(),new_im.tostring())
+
+def test_image_put_and_get_svg_in_marker_cache():
+    cache = mapnik.MarkerCache.instance()
+    cache.clear()
+    eq_(cache.size(),2)
+    image_file = '../data/svg/rect.svg'
+    image = mapnik.SVG.open(image_file)
+    cache.put(image_file,image)
+    new_im = cache.get(image_file)
+    eq_(image.width(),new_im.width())
+
+def test_marker_cache_override():
+    cache = mapnik.MarkerCache.instance()
+    cache.clear()
+    eq_(cache.size(),2)
+    image_file = '../data/images/marker.png'
+    image = mapnik.Image.open(image_file)
+    cache.put(image_file,image)
+    alt_im = mapnik.Image(4,4)
+    result = cache.put(image_file,alt_im)
+    # putting a item for which a key already exists should return False
+    eq_(result,False)
+    alt_im_copy = cache.get(image_file)
+    eq_(alt_im.tostring(),alt_im_copy.tostring())
+
+
+def test_threaded_reads_and_writes():
+    threads = []
+    for i in range(100):
+        t = threading.Thread(target=test_image_put_and_clear_marker_cache)
+        t.start()
+        threads.append(t)
+    for t in threads:
+        t.join()
+
+if __name__ == "__main__":
+    setup()
+    [eval(run)() for run in dir() if 'test_' in run]

tests/python_tests/svg_test.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import os
+from utilities import execution_path
+from nose.tools import *
+import mapnik
+import threading
+
+def setup():
+    # All of the paths used are relative, if we run the tests
+    # from another directory we need to chdir()
+    os.chdir(execution_path('.'))
+
+def test_svg_loading_from_file():
+    svg_file = '../data/svg/octocat.svg'
+    svg = mapnik.SVG.open(svg_file)
+    # TODO - invalid numbers
+    eq_(svg.width(),0)
+    eq_(svg.height(),0)
+    expected = mapnik.Box2d(0.00700000000001,-4.339,378.46,332.606)
+    actual = svg.extent()
+    assert_almost_equal(expected.minx,actual.minx, places=7)
+    assert_almost_equal(expected.miny,actual.miny, places=7)
+    assert_almost_equal(expected.maxx,actual.maxx, places=7)
+    assert_almost_equal(expected.maxy,actual.maxy, places=7)
+
+def test_svg_loading_from_string():
+    svg_file = '../data/svg/octocat.svg'
+    svg = mapnik.SVG.fromstring(open(svg_file,'rb').read())
+    # TODO - invalid numbers
+    eq_(svg.width(),0)
+    eq_(svg.height(),0)
+    expected = mapnik.Box2d(0.00700000000001,-4.339,378.46,332.606)
+    actual = svg.extent()
+    assert_almost_equal(expected.minx,actual.minx, places=7)
+    assert_almost_equal(expected.miny,actual.miny, places=7)
+    assert_almost_equal(expected.maxx,actual.maxx, places=7)
+    assert_almost_equal(expected.maxy,actual.maxy, places=7)
+
+if __name__ == "__main__":
+    setup()
+    [eval(run)() for run in dir() if 'test_' in run]