-
Notifications
You must be signed in to change notification settings - Fork 826
/
mapnik_python.cpp
635 lines (576 loc) · 19.2 KB
/
mapnik_python.cpp
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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
/*****************************************************************************
*
* 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 <boost/get_pointer.hpp>
#include <boost/python/detail/api_placeholder.hpp>
#include <boost/python/exception_translator.hpp>
void register_cairo();
void export_color();
void export_coord();
void export_layer();
void export_parameters();
void export_envelope();
void export_query();
void export_geometry();
void export_palette();
void export_image();
void export_image_view();
void export_gamma_method();
void export_scaling_method();
void export_grid();
void export_grid_view();
void export_map();
void export_python();
void export_expression();
void export_rule();
void export_style();
void export_stroke();
void export_feature();
void export_featureset();
void export_fontset();
void export_datasource();
void export_datasource_cache();
void export_symbolizer();
void export_markers_symbolizer();
void export_point_symbolizer();
void export_line_symbolizer();
void export_line_pattern_symbolizer();
void export_polygon_symbolizer();
void export_building_symbolizer();
void export_polygon_pattern_symbolizer();
void export_raster_symbolizer();
void export_text_placement();
void export_shield_symbolizer();
void export_font_engine();
void export_projection();
void export_proj_transform();
void export_view_transform();
void export_raster_colorizer();
void export_label_collision_detector();
void export_logger();
#include <mapnik/version.hpp>
#include <mapnik/value_error.hpp>
#include <mapnik/layer.hpp>
#include <mapnik/map.hpp>
#include <mapnik/agg_renderer.hpp>
#ifdef HAVE_CAIRO
#include <mapnik/cairo_renderer.hpp>
#endif
#include <mapnik/graphics.hpp>
#include <mapnik/image_util.hpp>
#include <mapnik/load_map.hpp>
#include <mapnik/config_error.hpp>
#include <mapnik/scale_denominator.hpp>
#include <mapnik/value_error.hpp>
#include <mapnik/save_map.hpp>
#include <mapnik/scale_denominator.hpp>
#include "python_grid_utils.hpp"
#include "mapnik_value_converter.hpp"
#include "mapnik_threads.hpp"
#include "python_optional.hpp"
#include <mapnik/marker_cache.hpp>
#include <mapnik/mapped_memory_cache.hpp>
void clear_cache()
{
mapnik::marker_cache::instance().clear();
mapnik::mapped_memory_cache::instance().clear();
}
#if defined(HAVE_CAIRO) && defined(HAVE_PYCAIRO)
#include <pycairo.h>
static Pycairo_CAPI_t *Pycairo_CAPI;
#endif
using mapnik::python_thread;
using mapnik::python_unblock_auto_block;
#ifdef MAPNIK_DEBUG
bool python_thread::thread_support = true;
#endif
boost::thread_specific_ptr<PyThreadState> python_thread::state;
void render(const mapnik::Map& map,
mapnik::image_32& image,
double scale_factor = 1.0,
unsigned offset_x = 0u,
unsigned offset_y = 0u)
{
python_unblock_auto_block b;
mapnik::agg_renderer<mapnik::image_32> ren(map,image,scale_factor,offset_x, offset_y);
ren.apply();
}
void render_with_detector(
const mapnik::Map &map,
mapnik::image_32 &image,
boost::shared_ptr<mapnik::label_collision_detector4> detector,
double scale_factor = 1.0,
unsigned offset_x = 0u,
unsigned offset_y = 0u)
{
python_unblock_auto_block b;
mapnik::agg_renderer<mapnik::image_32> ren(map,image,detector);
ren.apply();
}
void render_layer2(const mapnik::Map& map,
mapnik::image_32& image,
unsigned layer_idx)
{
std::vector<mapnik::layer> const& layers = map.layers();
std::size_t layer_num = layers.size();
if (layer_idx >= layer_num) {
std::ostringstream s;
s << "Zero-based layer index '" << layer_idx << "' not valid, only '"
<< layer_num << "' layers are in map\n";
throw std::runtime_error(s.str());
}
python_unblock_auto_block b;
mapnik::layer const& layer = layers[layer_idx];
mapnik::agg_renderer<mapnik::image_32> ren(map,image,1.0,0,0);
std::set<std::string> names;
ren.apply(layer,names);
}
#if defined(HAVE_CAIRO) && defined(HAVE_PYCAIRO)
void render3(const mapnik::Map& map,
PycairoSurface* surface,
double scale_factor = 1.0,
unsigned offset_x = 0,
unsigned offset_y = 0)
{
python_unblock_auto_block b;
Cairo::RefPtr<Cairo::Surface> s(new Cairo::Surface(surface->surface));
mapnik::cairo_renderer<Cairo::Surface> ren(map,s,scale_factor,offset_x,offset_y);
ren.apply();
}
void render4(const mapnik::Map& map, PycairoSurface* surface)
{
python_unblock_auto_block b;
Cairo::RefPtr<Cairo::Surface> s(new Cairo::Surface(surface->surface));
mapnik::cairo_renderer<Cairo::Surface> ren(map,s);
ren.apply();
}
void render5(const mapnik::Map& map,
PycairoContext* context,
double scale_factor = 1.0,
unsigned offset_x = 0,
unsigned offset_y = 0)
{
python_unblock_auto_block b;
Cairo::RefPtr<Cairo::Context> c(new Cairo::Context(context->ctx));
mapnik::cairo_renderer<Cairo::Context> ren(map,c,scale_factor,offset_x, offset_y);
ren.apply();
}
void render6(const mapnik::Map& map, PycairoContext* context)
{
python_unblock_auto_block b;
Cairo::RefPtr<Cairo::Context> c(new Cairo::Context(context->ctx));
mapnik::cairo_renderer<Cairo::Context> ren(map,c);
ren.apply();
}
#endif
void render_tile_to_file(const mapnik::Map& map,
unsigned offset_x, unsigned offset_y,
unsigned width, unsigned height,
std::string const& file,
std::string const& format)
{
mapnik::image_32 image(width,height);
render(map,image,1.0,offset_x, offset_y);
mapnik::save_to_file(image.data(),file,format);
}
void render_to_file1(const mapnik::Map& map,
std::string const& filename,
std::string const& format)
{
if (format == "pdf" || format == "svg" || format =="ps" || format == "ARGB32" || format == "RGB24")
{
#if defined(HAVE_CAIRO)
mapnik::save_to_cairo_file(map,filename,format,1.0);
#else
throw mapnik::ImageWriterException("Cairo backend not available, cannot write to format: " + format);
#endif
}
else
{
mapnik::image_32 image(map.width(),map.height());
render(map,image,1.0,0,0);
mapnik::save_to_file(image,filename,format);
}
}
void render_to_file2(const mapnik::Map& map,std::string const& filename)
{
std::string format = mapnik::guess_type(filename);
if (format == "pdf" || format == "svg" || format =="ps")
{
#if defined(HAVE_CAIRO)
mapnik::save_to_cairo_file(map,filename,format,1.0);
#else
throw mapnik::ImageWriterException("Cairo backend not available, cannot write to format: " + format);
#endif
}
else
{
mapnik::image_32 image(map.width(),map.height());
render(map,image,1.0,0,0);
mapnik::save_to_file(image,filename);
}
}
void render_to_file3(const mapnik::Map& map,
std::string const& filename,
std::string const& format,
double scale_factor = 1.0
)
{
if (format == "pdf" || format == "svg" || format =="ps" || format == "ARGB32" || format == "RGB24")
{
#if defined(HAVE_CAIRO)
mapnik::save_to_cairo_file(map,filename,format,scale_factor);
#else
throw mapnik::ImageWriterException("Cairo backend not available, cannot write to format: " + format);
#endif
}
else
{
mapnik::image_32 image(map.width(),map.height());
render(map,image,scale_factor,0,0);
mapnik::save_to_file(image,filename,format);
}
}
double scale_denominator(mapnik::Map const &map, bool geographic)
{
return mapnik::scale_denominator(map, geographic);
}
// http://docs.python.org/c-api/exceptions.html#standard-exceptions
void config_error_translator(mapnik::config_error const & ex)
{
PyErr_SetString(PyExc_RuntimeError, ex.what());
}
void value_error_translator(mapnik::value_error const & ex)
{
PyErr_SetString(PyExc_ValueError, ex.what());
}
void runtime_error_translator(std::runtime_error const & ex)
{
PyErr_SetString(PyExc_RuntimeError, ex.what());
}
unsigned mapnik_version()
{
return MAPNIK_VERSION;
}
std::string mapnik_version_string()
{
return MAPNIK_VERSION_STRING;
}
// indicator for jpeg read/write support within libmapnik
bool has_jpeg()
{
#if defined(HAVE_JPEG)
return true;
#else
return false;
#endif
}
// indicator for cairo rendering support inside libmapnik
bool has_cairo()
{
#if defined(HAVE_CAIRO)
return true;
#else
return false;
#endif
}
// indicator for pycairo support in the python bindings
bool has_pycairo()
{
#if defined(HAVE_CAIRO) && defined(HAVE_PYCAIRO)
Pycairo_CAPI = (Pycairo_CAPI_t*) PyCObject_Import(const_cast<char *>("cairo"), const_cast<char *>("CAPI"));
if (Pycairo_CAPI == NULL){
/*
Case where pycairo support has been compiled into
mapnik but at runtime the cairo python module
is unable to be imported and therefore Pycairo surfaces
and contexts cannot be passed to mapnik.render()
*/
return false;
}
return true;
#else
return false;
#endif
}
BOOST_PYTHON_FUNCTION_OVERLOADS(load_map_overloads, load_map, 2, 3)
BOOST_PYTHON_FUNCTION_OVERLOADS(load_map_string_overloads, load_map_string, 2, 4)
BOOST_PYTHON_FUNCTION_OVERLOADS(save_map_overloads, save_map, 2, 3)
BOOST_PYTHON_FUNCTION_OVERLOADS(save_map_to_string_overloads, save_map_to_string, 1, 2)
BOOST_PYTHON_FUNCTION_OVERLOADS(render_overloads, render, 2, 5)
BOOST_PYTHON_FUNCTION_OVERLOADS(render_with_detector_overloads, render_with_detector, 3, 6)
BOOST_PYTHON_MODULE(_mapnik)
{
using namespace boost::python;
using mapnik::load_map;
using mapnik::load_map_string;
using mapnik::save_map;
using mapnik::save_map_to_string;
using mapnik::render_grid;
register_exception_translator<mapnik::config_error>(&config_error_translator);
register_exception_translator<mapnik::value_error>(&value_error_translator);
register_exception_translator<std::runtime_error>(&runtime_error_translator);
register_cairo();
export_query();
export_geometry();
export_feature();
export_featureset();
export_fontset();
export_datasource();
export_parameters();
export_color();
export_envelope();
export_palette();
export_image();
export_image_view();
export_gamma_method();
export_scaling_method();
export_grid();
export_grid_view();
export_expression();
export_rule();
export_style();
export_layer();
export_stroke();
export_datasource_cache();
export_symbolizer();
export_markers_symbolizer();
export_point_symbolizer();
export_line_symbolizer();
export_line_pattern_symbolizer();
export_polygon_symbolizer();
export_building_symbolizer();
export_polygon_pattern_symbolizer();
export_raster_symbolizer();
export_text_placement();
export_shield_symbolizer();
export_font_engine();
export_projection();
export_proj_transform();
export_view_transform();
export_coord();
export_map();
export_raster_colorizer();
export_label_collision_detector();
export_logger();
def("clear_cache", &clear_cache,
"\n"
"Clear all global caches of markers and mapped memory regions.\n"
"\n"
"Usage:\n"
">>> from mapnik import clear_cache\n"
">>> clear_cache()\n"
);
def("render_grid",&render_grid,
( arg("map"),
arg("layer"),
args("key")="__id__",
arg("resolution")=4,
arg("fields")=boost::python::list()
)
);
def("render_to_file",&render_to_file1,
"\n"
"Render Map to file using explicit image type.\n"
"\n"
"Usage:\n"
">>> from mapnik import Map, render_to_file, load_map\n"
">>> m = Map(256,256)\n"
">>> load_map(m,'mapfile.xml')\n"
">>> render_to_file(m,'image32bit.png','png')\n"
"\n"
"8 bit (paletted) PNG can be requested with 'png256':\n"
">>> render_to_file(m,'8bit_image.png','png256')\n"
"\n"
"JPEG quality can be controlled by adding a suffix to\n"
"'jpeg' between 0 and 100 (default is 85):\n"
">>> render_to_file(m,'top_quality.jpeg','jpeg100')\n"
">>> render_to_file(m,'medium_quality.jpeg','jpeg50')\n"
);
def("render_to_file",&render_to_file2,
"\n"
"Render Map to file (type taken from file extension)\n"
"\n"
"Usage:\n"
">>> from mapnik import Map, render_to_file, load_map\n"
">>> m = Map(256,256)\n"
">>> render_to_file(m,'image.jpeg')\n"
"\n"
);
def("render_to_file",&render_to_file3,
"\n"
"Render Map to file using explicit image type and scale factor.\n"
"\n"
"Usage:\n"
">>> from mapnik import Map, render_to_file, load_map\n"
">>> m = Map(256,256)\n"
">>> scale_factor = 4\n"
">>> render_to_file(m,'image.jpeg',scale_factor)\n"
"\n"
);
def("render_tile_to_file",&render_tile_to_file,
"\n"
"TODO\n"
"\n"
);
def("render", &render, render_overloads(
"\n"
"Render Map to an AGG image_32 using offsets\n"
"\n"
"Usage:\n"
">>> from mapnik import Map, Image, render, load_map\n"
">>> m = Map(256,256)\n"
">>> load_map(m,'mapfile.xml')\n"
">>> im = Image(m.width,m.height)\n"
">>> scale_factor=2.0\n"
">>> offset = [100,50]\n"
">>> render(m,im)\n"
">>> render(m,im,scale_factor)\n"
">>> render(m,im,scale_factor,offset[0],offset[1])\n"
"\n"
));
def("render_with_detector", &render_with_detector, render_with_detector_overloads(
"\n"
"Render Map to an AGG image_32 using a pre-constructed detector.\n"
"\n"
"Usage:\n"
">>> from mapnik import Map, Image, LabelCollisionDetector, render_with_detector, load_map\n"
">>> m = Map(256,256)\n"
">>> load_map(m,'mapfile.xml')\n"
">>> im = Image(m.width,m.height)\n"
">>> detector = LabelCollisionDetector(m)\n"
">>> render_with_detector(m, im, detector)\n"
));
def("render_layer", &render_layer2,
(arg("map"),arg("image"),args("layer"))
);
def("render_layer", &mapnik::render_layer_for_grid,
(arg("map"),arg("grid"),args("layer"),arg("fields")=boost::python::list())
);
#if defined(HAVE_CAIRO) && defined(HAVE_PYCAIRO)
def("render",&render3,
"\n"
"Render Map to Cairo Surface using offsets\n"
"\n"
"Usage:\n"
">>> from mapnik import Map, render, load_map\n"
">>> from cairo import SVGSurface\n"
">>> m = Map(256,256)\n"
">>> load_map(m,'mapfile.xml')\n"
">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
">>> render(m,surface,1,1)\n"
"\n"
);
def("render",&render4,
"\n"
"Render Map to Cairo Surface\n"
"\n"
"Usage:\n"
">>> from mapnik import Map, render, load_map\n"
">>> from cairo import SVGSurface\n"
">>> m = Map(256,256)\n"
">>> load_map(m,'mapfile.xml')\n"
">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
">>> render(m,surface)\n"
"\n"
);
def("render",&render5,
"\n"
"Render Map to Cairo Context using offsets\n"
"\n"
"Usage:\n"
">>> from mapnik import Map, render, load_map\n"
">>> from cairo import SVGSurface, Context\n"
">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
">>> ctx = Context(surface)\n"
">>> load_map(m,'mapfile.xml')\n"
">>> render(m,context,1,1)\n"
"\n"
);
def("render",&render6,
"\n"
"Render Map to Cairo Context\n"
"\n"
"Usage:\n"
">>> from mapnik import Map, render, load_map\n"
">>> from cairo import SVGSurface, Context\n"
">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
">>> ctx = Context(surface)\n"
">>> load_map(m,'mapfile.xml')\n"
">>> render(m,context)\n"
"\n"
);
#endif
def("scale_denominator", &scale_denominator,
"\n"
"Return the Map Scale Denominator.\n"
"Also available as Map.scale_denominator()\n"
"\n"
"Usage:\n"
"\n"
">>> from mapnik import Map, Projection, scale_denominator, load_map\n"
">>> m = Map(256,256)\n"
">>> load_map(m,'mapfile.xml')\n"
">>> scale_denominator(m,Projection(m.srs).geographic)\n"
"\n"
);
def("load_map", &load_map, load_map_overloads());
def("load_map_from_string", &load_map_string, load_map_string_overloads());
def("save_map", &save_map, save_map_overloads());
/*
"\n"
"Save Map object to XML file\n"
"\n"
"Usage:\n"
">>> from mapnik import Map, load_map, save_map\n"
">>> m = Map(256,256)\n"
">>> load_map(m,'mapfile_wgs84.xml')\n"
">>> m.srs\n"
"'+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs'\n"
">>> m.srs = '+init=espg:3395'\n"
">>> save_map(m,'mapfile_mercator.xml')\n"
"\n"
);
*/
def("save_map_to_string", &save_map_to_string, save_map_to_string_overloads());
def("mapnik_version", &mapnik_version,"Get the Mapnik version number");
def("mapnik_version_string", &mapnik_version_string,"Get the Mapnik version string");
def("has_jpeg", &has_jpeg, "Get jpeg read/write support status");
def("has_cairo", &has_cairo, "Get cairo library status");
def("has_pycairo", &has_pycairo, "Get pycairo module status");
python_optional<mapnik::stroke>();
python_optional<mapnik::font_set>();
python_optional<mapnik::color>();
python_optional<mapnik::box2d<double> >();
python_optional<mapnik::composite_mode_e>();
python_optional<mapnik::datasource::geometry_t>();
python_optional<std::string>();
python_optional<unsigned>();
python_optional<double>();
python_optional<float>();
python_optional<bool>();
python_optional<mapnik::text_transform_e>();
register_ptr_to_python<mapnik::expression_ptr>();
register_ptr_to_python<mapnik::path_expression_ptr>();
to_python_converter<mapnik::value_holder,mapnik_param_to_python>();
to_python_converter<mapnik::value,mapnik_value_to_python>();
}