536 lines
20 KiB
C++
536 lines
20 KiB
C++
/*****************************************************************************
|
|
*
|
|
* 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/config.hpp>
|
|
|
|
#include "boost_std_shared_shim.hpp"
|
|
// boost
|
|
#include <boost/python.hpp>
|
|
#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
|
|
#include <boost/python/iterator.hpp>
|
|
#include <boost/iterator/transform_iterator.hpp>
|
|
|
|
// mapnik
|
|
#include <mapnik/rule.hpp>
|
|
#include <mapnik/layer.hpp>
|
|
#include <mapnik/map.hpp>
|
|
#include <mapnik/projection.hpp>
|
|
#include <mapnik/view_transform.hpp>
|
|
#include <mapnik/feature_type_style.hpp>
|
|
#include "mapnik_enumeration.hpp"
|
|
|
|
using mapnik::color;
|
|
using mapnik::coord;
|
|
using mapnik::box2d;
|
|
using mapnik::layer;
|
|
using mapnik::Map;
|
|
|
|
std::vector<layer>& (Map::*layers_nonconst)() = &Map::layers;
|
|
std::vector<layer> const& (Map::*layers_const)() const = &Map::layers;
|
|
mapnik::parameters& (Map::*params_nonconst)() = &Map::get_extra_parameters;
|
|
|
|
void insert_style(mapnik::Map & m, std::string const& name, mapnik::feature_type_style const& style)
|
|
{
|
|
m.insert_style(name,style);
|
|
}
|
|
|
|
void insert_fontset(mapnik::Map & m, std::string const& name, mapnik::font_set const& fontset)
|
|
{
|
|
m.insert_fontset(name,fontset);
|
|
}
|
|
|
|
mapnik::feature_type_style find_style(mapnik::Map const& m, std::string const& name)
|
|
{
|
|
boost::optional<mapnik::feature_type_style const&> style = m.find_style(name);
|
|
if (!style)
|
|
{
|
|
PyErr_SetString(PyExc_KeyError, "Invalid style name");
|
|
boost::python::throw_error_already_set();
|
|
}
|
|
return *style;
|
|
}
|
|
|
|
mapnik::font_set find_fontset(mapnik::Map const& m, std::string const& name)
|
|
{
|
|
boost::optional<mapnik::font_set const&> fontset = m.find_fontset(name);
|
|
if (!fontset)
|
|
{
|
|
PyErr_SetString(PyExc_KeyError, "Invalid font_set name");
|
|
boost::python::throw_error_already_set();
|
|
}
|
|
return *fontset;
|
|
}
|
|
|
|
// TODO - we likely should allow indexing by negative number from python
|
|
// for now, protect against negative values and kindly throw
|
|
mapnik::featureset_ptr query_point(mapnik::Map const& m, int index, double x, double y)
|
|
{
|
|
if (index < 0){
|
|
PyErr_SetString(PyExc_IndexError, "Please provide a layer index >= 0");
|
|
boost::python::throw_error_already_set();
|
|
}
|
|
unsigned idx = index;
|
|
return m.query_point(idx, x, y);
|
|
}
|
|
|
|
mapnik::featureset_ptr query_map_point(mapnik::Map const& m, int index, double x, double y)
|
|
{
|
|
if (index < 0){
|
|
PyErr_SetString(PyExc_IndexError, "Please provide a layer index >= 0");
|
|
boost::python::throw_error_already_set();
|
|
}
|
|
unsigned idx = index;
|
|
return m.query_map_point(idx, x, y);
|
|
}
|
|
|
|
void set_maximum_extent(mapnik::Map & m, boost::optional<mapnik::box2d<double> > const& box)
|
|
{
|
|
if (box)
|
|
{
|
|
m.set_maximum_extent(*box);
|
|
}
|
|
else
|
|
{
|
|
m.reset_maximum_extent();
|
|
}
|
|
}
|
|
|
|
struct extract_style
|
|
{
|
|
using result_type = boost::python::tuple;
|
|
result_type operator() (std::map<std::string, mapnik::feature_type_style>::value_type const& val) const
|
|
{
|
|
return boost::python::make_tuple(val.first,val.second);
|
|
}
|
|
};
|
|
|
|
using style_extract_iterator = boost::transform_iterator<extract_style, Map::const_style_iterator>;
|
|
using style_range = std::pair<style_extract_iterator,style_extract_iterator>;
|
|
|
|
style_range _styles_ (mapnik::Map const& m)
|
|
{
|
|
return style_range(
|
|
boost::make_transform_iterator<extract_style>(m.begin_styles(), extract_style()),
|
|
boost::make_transform_iterator<extract_style>(m.end_styles(), extract_style()));
|
|
}
|
|
|
|
void export_map()
|
|
{
|
|
using namespace boost::python;
|
|
|
|
// aspect ratio fix modes
|
|
mapnik::enumeration_<mapnik::aspect_fix_mode_e>("aspect_fix_mode")
|
|
.value("GROW_BBOX", mapnik::Map::GROW_BBOX)
|
|
.value("GROW_CANVAS",mapnik::Map::GROW_CANVAS)
|
|
.value("SHRINK_BBOX",mapnik::Map::SHRINK_BBOX)
|
|
.value("SHRINK_CANVAS",mapnik::Map::SHRINK_CANVAS)
|
|
.value("ADJUST_BBOX_WIDTH",mapnik::Map::ADJUST_BBOX_WIDTH)
|
|
.value("ADJUST_BBOX_HEIGHT",mapnik::Map::ADJUST_BBOX_HEIGHT)
|
|
.value("ADJUST_CANVAS_WIDTH",mapnik::Map::ADJUST_CANVAS_WIDTH)
|
|
.value("ADJUST_CANVAS_HEIGHT", mapnik::Map::ADJUST_CANVAS_HEIGHT)
|
|
.value("RESPECT", mapnik::Map::RESPECT)
|
|
;
|
|
|
|
class_<std::vector<layer> >("Layers")
|
|
.def(vector_indexing_suite<std::vector<layer> >())
|
|
;
|
|
|
|
class_<style_range>("StyleRange")
|
|
.def("__iter__",
|
|
boost::python::range(&style_range::first, &style_range::second))
|
|
;
|
|
|
|
class_<Map>("Map","The map object.",init<int,int,optional<std::string const&> >(
|
|
( arg("width"),arg("height"),arg("srs") ),
|
|
"Create a Map with a width and height as integers and, optionally,\n"
|
|
"an srs string either with a Proj.4 epsg code ('+init=epsg:<code>')\n"
|
|
"or with a Proj.4 literal ('+proj=<literal>').\n"
|
|
"If no srs is specified the map will default to '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs'\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> from mapnik import Map\n"
|
|
">>> m = Map(600,400)\n"
|
|
">>> m\n"
|
|
"<mapnik._mapnik.Map object at 0x6a240>\n"
|
|
">>> m.srs\n"
|
|
"'+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs'\n"
|
|
))
|
|
|
|
.def("append_style",insert_style,
|
|
(arg("style_name"),arg("style_object")),
|
|
"Insert a Mapnik Style onto the map by appending it.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> sty\n"
|
|
"<mapnik._mapnik.Style object at 0x6a330>\n"
|
|
">>> m.append_style('Style Name', sty)\n"
|
|
"True # style object added to map by name\n"
|
|
">>> m.append_style('Style Name', sty)\n"
|
|
"False # you can only append styles with unique names\n"
|
|
)
|
|
|
|
.def("append_fontset",insert_fontset,
|
|
(arg("fontset")),
|
|
"Add a FontSet to the map."
|
|
)
|
|
|
|
.def("buffered_envelope",
|
|
&Map::get_buffered_extent,
|
|
"Get the Box2d() of the Map given\n"
|
|
"the Map.buffer_size.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m = Map(600,400)\n"
|
|
">>> m.envelope()\n"
|
|
"Box2d(-1.0,-1.0,0.0,0.0)\n"
|
|
">>> m.buffered_envelope()\n"
|
|
"Box2d(-1.0,-1.0,0.0,0.0)\n"
|
|
">>> m.buffer_size = 1\n"
|
|
">>> m.buffered_envelope()\n"
|
|
"Box2d(-1.02222222222,-1.02222222222,0.0222222222222,0.0222222222222)\n"
|
|
)
|
|
|
|
.def("envelope",
|
|
make_function(&Map::get_current_extent,
|
|
return_value_policy<copy_const_reference>()),
|
|
"Return the Map Box2d object\n"
|
|
"and print the string representation\n"
|
|
"of the current extent of the map.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.envelope()\n"
|
|
"Box2d(-0.185833333333,-0.96,0.189166666667,-0.71)\n"
|
|
">>> dir(m.envelope())\n"
|
|
"...'center', 'contains', 'expand_to_include', 'forward',\n"
|
|
"...'height', 'intersect', 'intersects', 'inverse', 'maxx',\n"
|
|
"...'maxy', 'minx', 'miny', 'width'\n"
|
|
)
|
|
|
|
.def("find_fontset",find_fontset,
|
|
(arg("name")),
|
|
"Find a fontset by name."
|
|
)
|
|
|
|
.def("find_style",
|
|
find_style,
|
|
(arg("name")),
|
|
"Query the Map for a style by name and return\n"
|
|
"a style object if found or raise KeyError\n"
|
|
"style if not found.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.find_style('Style Name')\n"
|
|
"<mapnik._mapnik.Style object at 0x654f0>\n"
|
|
)
|
|
|
|
.add_property("styles", _styles_)
|
|
|
|
.def("pan",&Map::pan,
|
|
(arg("x"),arg("y")),
|
|
"Set the Map center at a given x,y location\n"
|
|
"as integers in the coordinates of the pixmap or map surface.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m = Map(600,400)\n"
|
|
">>> m.envelope().center()\n"
|
|
"Coord(-0.5,-0.5) # default Map center\n"
|
|
">>> m.pan(-1,-1)\n"
|
|
">>> m.envelope().center()\n"
|
|
"Coord(0.00166666666667,-0.835)\n"
|
|
)
|
|
|
|
.def("pan_and_zoom",&Map::pan_and_zoom,
|
|
(arg("x"),arg("y"),arg("factor")),
|
|
"Set the Map center at a given x,y location\n"
|
|
"and zoom factor as a float.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m = Map(600,400)\n"
|
|
">>> m.envelope().center()\n"
|
|
"Coord(-0.5,-0.5) # default Map center\n"
|
|
">>> m.scale()\n"
|
|
"-0.0016666666666666668\n"
|
|
">>> m.pan_and_zoom(-1,-1,0.25)\n"
|
|
">>> m.scale()\n"
|
|
"0.00062500000000000001\n"
|
|
)
|
|
|
|
.def("query_map_point",query_map_point,
|
|
(arg("layer_idx"),arg("pixel_x"),arg("pixel_y")),
|
|
"Query a Map Layer (by layer index) for features \n"
|
|
"intersecting the given x,y location in the pixel\n"
|
|
"coordinates of the rendered map image.\n"
|
|
"Layer index starts at 0 (first layer in map).\n"
|
|
"Will return a Mapnik Featureset if successful\n"
|
|
"otherwise will return None.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> featureset = m.query_map_point(0,200,200)\n"
|
|
">>> featureset\n"
|
|
"<mapnik._mapnik.Featureset object at 0x23b0b0>\n"
|
|
">>> featureset.features\n"
|
|
">>> [<mapnik.Feature object at 0x3995630>]\n"
|
|
)
|
|
|
|
.def("query_point",query_point,
|
|
(arg("layer idx"),arg("x"),arg("y")),
|
|
"Query a Map Layer (by layer index) for features \n"
|
|
"intersecting the given x,y location in the coordinates\n"
|
|
"of map projection.\n"
|
|
"Layer index starts at 0 (first layer in map).\n"
|
|
"Will return a Mapnik Featureset if successful\n"
|
|
"otherwise will return None.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> featureset = m.query_point(0,-122,48)\n"
|
|
">>> featureset\n"
|
|
"<mapnik._mapnik.Featureset object at 0x23b0b0>\n"
|
|
">>> featureset.features\n"
|
|
">>> [<mapnik.Feature object at 0x3995630>]\n"
|
|
)
|
|
|
|
.def("remove_all",&Map::remove_all,
|
|
"Remove all Mapnik Styles and layers from the Map.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.remove_all()\n"
|
|
)
|
|
|
|
.def("remove_style",&Map::remove_style,
|
|
(arg("style_name")),
|
|
"Remove a Mapnik Style from the map.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.remove_style('Style Name')\n"
|
|
)
|
|
|
|
.def("resize",&Map::resize,
|
|
(arg("width"),arg("height")),
|
|
"Resize a Mapnik Map.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.resize(64,64)\n"
|
|
)
|
|
|
|
.def("scale", &Map::scale,
|
|
"Return the Map Scale.\n"
|
|
"Usage:\n"
|
|
"\n"
|
|
">>> m.scale()\n"
|
|
)
|
|
|
|
.def("scale_denominator", &Map::scale_denominator,
|
|
"Return the Map Scale Denominator.\n"
|
|
"Usage:\n"
|
|
"\n"
|
|
">>> m.scale_denominator()\n"
|
|
)
|
|
|
|
.def("view_transform",&Map::transform,
|
|
"Return the map ViewTransform object\n"
|
|
"which is used internally to convert between\n"
|
|
"geographic coordinates and screen coordinates.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.view_transform()\n"
|
|
)
|
|
|
|
.def("zoom",&Map::zoom,
|
|
(arg("factor")),
|
|
"Zoom in or out by a given factor.\n"
|
|
"Positive number zooms in, negative number\n"
|
|
"zooms out.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
"\n"
|
|
">>> m.zoom(0.25)\n"
|
|
)
|
|
|
|
.def("zoom_all",&Map::zoom_all,
|
|
"Set the geographical extent of the map\n"
|
|
"to the combined extents of all active layers.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.zoom_all()\n"
|
|
)
|
|
|
|
.def("zoom_to_box",&Map::zoom_to_box,
|
|
(arg("Boxd2")),
|
|
"Set the geographical extent of the map\n"
|
|
"by specifying a Mapnik Box2d.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> extext = Box2d(-180.0, -90.0, 180.0, 90.0)\n"
|
|
">>> m.zoom_to_box(extent)\n"
|
|
)
|
|
|
|
.add_property("parameters",make_function(params_nonconst,return_value_policy<reference_existing_object>()),"TODO")
|
|
|
|
.add_property("aspect_fix_mode",
|
|
&Map::get_aspect_fix_mode,
|
|
&Map::set_aspect_fix_mode,
|
|
// TODO - how to add arg info to properties?
|
|
//(arg("aspect_fix_mode")),
|
|
"Get/Set aspect fix mode.\n"
|
|
"Usage:\n"
|
|
"\n"
|
|
">>> m.aspect_fix_mode = aspect_fix_mode.GROW_BBOX\n"
|
|
)
|
|
|
|
.add_property("background",make_function
|
|
(&Map::background,return_value_policy<copy_const_reference>()),
|
|
&Map::set_background,
|
|
"The background color of the map (same as background_color property).\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.background = Color('steelblue')\n"
|
|
)
|
|
|
|
.add_property("background_color",make_function
|
|
(&Map::background,return_value_policy<copy_const_reference>()),
|
|
&Map::set_background,
|
|
"The background color of the map.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.background_color = Color('steelblue')\n"
|
|
)
|
|
|
|
.add_property("background_image",make_function
|
|
(&Map::background_image,return_value_policy<copy_const_reference>()),
|
|
&Map::set_background_image,
|
|
"The optional background image of the map.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.background_image = '/path/to/image.png'\n"
|
|
)
|
|
|
|
.add_property("background_image_comp_op",&Map::background_image_comp_op,
|
|
&Map::set_background_image_comp_op,
|
|
"The background image compositing operation.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.background_image_comp_op = mapnik.CompositeOp.src_over\n"
|
|
)
|
|
|
|
.add_property("background_image_opacity",&Map::background_image_opacity,
|
|
&Map::set_background_image_opacity,
|
|
"The background image opacity.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.background_image_opacity = 1.0\n"
|
|
)
|
|
|
|
.add_property("base",
|
|
make_function(&Map::base_path,return_value_policy<copy_const_reference>()),
|
|
&Map::set_base_path,
|
|
"The base path of the map where any files using relative \n"
|
|
"paths will be interpreted as relative to.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.base_path = '.'\n"
|
|
)
|
|
|
|
.add_property("buffer_size",
|
|
&Map::buffer_size,
|
|
&Map::set_buffer_size,
|
|
"Get/Set the size of buffer around map in pixels.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.buffer_size\n"
|
|
"0 # zero by default\n"
|
|
">>> m.buffer_size = 2\n"
|
|
">>> m.buffer_size\n"
|
|
"2\n"
|
|
)
|
|
|
|
.add_property("height",
|
|
&Map::height,
|
|
&Map::set_height,
|
|
"Get/Set the height of the map in pixels.\n"
|
|
"Minimum settable size is 16 pixels.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.height\n"
|
|
"400\n"
|
|
">>> m.height = 600\n"
|
|
">>> m.height\n"
|
|
"600\n"
|
|
)
|
|
|
|
.add_property("layers",make_function
|
|
(layers_nonconst,return_value_policy<reference_existing_object>()),
|
|
"The list of map layers.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.layers\n"
|
|
"<mapnik._mapnik.layers object at 0x6d458>"
|
|
">>> m.layers[0]\n"
|
|
"<mapnik._mapnik.layer object at 0x5fe130>\n"
|
|
)
|
|
|
|
.add_property("maximum_extent",make_function
|
|
(&Map::maximum_extent,return_value_policy<copy_const_reference>()),
|
|
&set_maximum_extent,
|
|
"The maximum extent of the map.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.maximum_extent = Box2d(-180,-90,180,90)\n"
|
|
)
|
|
|
|
.add_property("srs",
|
|
make_function(&Map::srs,return_value_policy<copy_const_reference>()),
|
|
&Map::set_srs,
|
|
"Spatial reference in Proj.4 format.\n"
|
|
"Either an epsg code or proj literal.\n"
|
|
"For example, a proj literal:\n"
|
|
"\t'+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs'\n"
|
|
"and a proj epsg code:\n"
|
|
"\t'+init=epsg:4326'\n"
|
|
"\n"
|
|
"Note: using epsg codes requires the installation of\n"
|
|
"the Proj.4 'epsg' data file normally found in '/usr/local/share/proj'\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.srs\n"
|
|
"'+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs' # The default srs if not initialized with custom srs\n"
|
|
">>> # set to google mercator with Proj.4 literal\n"
|
|
"... \n"
|
|
">>> m.srs = '+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0.0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs +over'\n"
|
|
)
|
|
|
|
.add_property("width",
|
|
&Map::width,
|
|
&Map::set_width,
|
|
"Get/Set the width of the map in pixels.\n"
|
|
"Minimum settable size is 16 pixels.\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> m.width\n"
|
|
"600\n"
|
|
">>> m.width = 800\n"
|
|
">>> m.width\n"
|
|
"800\n"
|
|
)
|
|
// comparison
|
|
.def(self == self)
|
|
;
|
|
}
|