1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*****************************************************************************
*
* 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 <boost/python.hpp>
#include <mapnik/image_data.hpp>
#include <mapnik/image_view.hpp>
#include <mapnik/image_util.hpp>
#include <mapnik/palette.hpp>
#include <mapnik/image_view.hpp>
#include <sstream>
using mapnik::image_data_32;
using mapnik::image_view;
using mapnik::save_to_file;
// output 'raw' pixels
PyObject* view_tostring1(image_view<image_data_32> const& view)
{
std::ostringstream ss(std::ios::out|std::ios::binary);
for (unsigned i=0;i<view.height();i++)
{
ss.write(reinterpret_cast<const char*>(view.getRow(i)),
view.width() * sizeof(image_view<image_data_32>::pixel_type));
}
return
#if PY_VERSION_HEX >= 0x03000000
::PyBytes_FromStringAndSize
#else
::PyString_FromStringAndSize
#endif
((const char*)ss.str().c_str(),ss.str().size());
}
// encode (png,jpeg)
PyObject* view_tostring2(image_view<image_data_32> const & view, std::string const& format)
{
std::string s = save_to_string(view, format);
return
#if PY_VERSION_HEX >= 0x03000000
::PyBytes_FromStringAndSize
#else
::PyString_FromStringAndSize
#endif
(s.data(),s.size());
}
PyObject* view_tostring3(image_view<image_data_32> const & view, std::string const& format, mapnik::rgba_palette const& pal)
{
std::string s = save_to_string(view, format, pal);
return
#if PY_VERSION_HEX >= 0x03000000
::PyBytes_FromStringAndSize
#else
::PyString_FromStringAndSize
#endif
(s.data(),s.size());
}
bool is_solid(image_view<image_data_32> const& view)
{
if (view.width() > 0 && view.height() > 0)
{
mapnik::image_view<image_data_32>::pixel_type const* first_row = view.getRow(0);
mapnik::image_view<image_data_32>::pixel_type const first_pixel = first_row[0];
for (unsigned y = 0; y < view.height(); ++y)
{
mapnik::image_view<image_data_32>::pixel_type const * row = view.getRow(y);
for (unsigned x = 0; x < view.width(); ++x)
{
if (first_pixel != row[x])
{
return false;
}
}
}
}
return true;
}
void save_view1(image_view<image_data_32> const& view,
std::string const& filename)
{
save_to_file(view,filename);
}
void save_view2(image_view<image_data_32> const& view,
std::string const& filename,
std::string const& type)
{
save_to_file(view,filename,type);
}
void save_view3(image_view<image_data_32> const& view,
std::string const& filename,
std::string const& type,
mapnik::rgba_palette const& pal)
{
save_to_file(view,filename,type,pal);
}
void export_image_view()
{
using namespace boost::python;
class_<image_view<image_data_32> >("ImageView","A view into an image.",no_init)
.def("width",&image_view<image_data_32>::width)
.def("height",&image_view<image_data_32>::height)
.def("is_solid",&is_solid)
.def("tostring",&view_tostring1)
.def("tostring",&view_tostring2)
.def("tostring",&view_tostring3)
.def("save",&save_view1)
.def("save",&save_view2)
.def("save",&save_view3)
;
}
|
