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implemented Image open method :

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im = Image.open("map.png")
This commit is contained in:
Artem Pavlenko 2008-02-19 11:28:20 +00:00
parent b54aa9091b
commit 1625c760db
1 changed files with 20 additions and 1 deletions
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21
bindings/python/mapnik_image.cpp
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@ -35,9 +35,13 @@ extern "C"
#include <mapnik/image_util.hpp>
#include <mapnik/jpeg_io.hpp>
#include <mapnik/png_io.hpp>
#include <mapnik/image_reader.hpp>
#include <sstream>
using mapnik::Image32;
using mapnik::ImageReader;
using mapnik::get_image_reader;
using mapnik::type_from_filename;
using namespace boost::python;
using mapnik::save_to_file;
@ -62,6 +66,18 @@ PyObject* tostring2(Image32 const & im, std::string const& format)
void (*save_to_file1)( mapnik::Image32 const&, std::string const&,std::string const&) = mapnik::save_to_file;
void (*save_to_file2)( mapnik::Image32 const&, std::string const&) = mapnik::save_to_file;
boost::shared_ptr<Image32> open_from_file(std::string const& filename)
{
std::auto_ptr<ImageReader> reader(get_image_reader(filename,type_from_filename(filename)));
if (reader.get())
{
boost::shared_ptr<Image32> image_ptr(new Image32(reader->width(),reader->height()));
reader->read(0,0,image_ptr->data());
return image_ptr;
}
throw mapnik::ImageReaderException("FIXME: " + filename);
}
void blend (Image32 & im, unsigned x, unsigned y, Image32 const& im2, float opacity)
{
im.set_rectangle_alpha2(im2.data(),x,y,opacity);
@ -70,7 +86,7 @@ void blend (Image32 & im, unsigned x, unsigned y, Image32 const& im2, float opac
void export_image()
{
using namespace boost::python;
class_<Image32>("Image","This class represents a 32 bit RGBA image.",init<int,int>())
class_<Image32,boost::shared_ptr<Image32> >("Image","This class represents a 32 bit RGBA image.",init<int,int>())
.def("width",&Image32::width)
.def("height",&Image32::height)
.def("view",&Image32::get_view)
@ -82,5 +98,8 @@ void export_image()
.def("tostring",&tostring2)
.def("save", save_to_file1)
.def("save", save_to_file2)
.def("open",open_from_file)
.staticmethod("open")
;
}