File: iunknown_python.cpp

package info (click to toggle)
k3d 0.8.0.6-1
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 46,148 kB
  • ctags: 27,246
  • sloc: cpp: 166,490; xml: 6,995; python: 5,997; ansic: 4,978; makefile: 32; sh: 21
file content (172 lines) | stat: -rw-r--r-- 5,612 bytes parent folder | download | duplicates (3)
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
// K-3D
// Copyright (c) 1995-2006, Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This program 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

/** \file
	\author Timothy M. Shead (tshead@k-3d.com)
*/

#include <boost/python.hpp>

#include <k3dsdk/python/any_python.h>
#include <k3dsdk/python/offscreen_context_factory_gl_python.h>
#include <k3dsdk/python/idocument_exporter_python.h>
#include <k3dsdk/python/idocument_importer_python.h>
#include <k3dsdk/python/ifile_change_notifier_python.h>
#include <k3dsdk/python/ikeyframer_python.h>
#include <k3dsdk/python/imesh_storage_python.h>
#include <k3dsdk/python/imeta_object_python.h>
#include <k3dsdk/python/imetadata_python.h>
#include <k3dsdk/python/inode_python.h>
#include <k3dsdk/python/inode_selection_python.h>
#include <k3dsdk/python/iplugin_factory_python.h>
#include <k3dsdk/python/iproperty_collection_python.h>
#include <k3dsdk/python/iproperty_python.h>
#include <k3dsdk/python/irender_camera_frame_python.h>
#include <k3dsdk/python/irender_camera_preview_python.h>
#include <k3dsdk/python/isnappable_python.h>
#include <k3dsdk/python/iunknown_python.h>
#include <k3dsdk/python/iuser_interface_python.h>

#include <k3dsdk/iproperty_collection.h>
#include <k3dsdk/iproperty.h>
#include <k3dsdk/iwritable_property.h>
#include <k3dsdk/log.h>
#include <k3dsdk/property.h>
#include <k3dsdk/types.h>

using namespace boost::python;

namespace k3d
{

namespace python
{

object wrap_unknown(iunknown* Unknown)
{
	return Unknown ? wrap_unknown(*Unknown) : object();
}

object wrap_unknown(iunknown& Unknown)
{
	object result = object(iunknown_wrapper(Unknown));

	define_methods_imeta_object(Unknown, result);
	define_methods_offscreen_context_factory_gl(Unknown, result);
	define_methods_idocument_exporter(Unknown, result);
	define_methods_idocument_importer(Unknown, result);
	define_methods_ifile_change_notifier(Unknown, result);
	define_methods_ikeyframer(Unknown, result);
	define_methods_imesh_storage(Unknown, result);
	define_methods_imetadata(Unknown, result);
	define_methods_inode(Unknown, result);
	define_methods_inode_selection(Unknown, result);
	define_methods_iplugin_factory(Unknown, result);
	define_methods_iproperty(Unknown, result);
	define_methods_iproperty_collection(Unknown, result);
	define_methods_irender_camera_frame(Unknown, result);
	define_methods_irender_camera_preview(Unknown, result);
	define_methods_isnappable(Unknown, result);
	define_methods_iuser_interface(Unknown, result);
	
	return result;
}

// This rightfully belongs with the rest of the iproperty_collection code, but for some reason __getattr__
// doesn't seem to work with our dynamically-added instance methods.
static object getattr(iunknown_wrapper& Self, const string_t& Name)
{
	// Return K-3D properties as attributes whenever they're available ...
	if(k3d::iproperty_collection* const property_collection = Self.wrapped_ptr<k3d::iproperty_collection>())
	{
		if(k3d::iproperty* property = k3d::property::get(*property_collection, Name))
			return any_to_python(k3d::property::pipeline_value(*property));

		throw std::invalid_argument("unknown property: " + Name);
	}

	return object();
}

// This rightfully belongs with the rest of the iproperty_collection code, but for some reason __getattr__
// doesn't seem to work with our dynamically-added instance methods.
static void setattr(object& Self, const string_t& Name, const object& Value)
{
	// If this is a K-3D property, set its internal value ...
	extract<iunknown_wrapper> unknown(Self);
	if(unknown.check())
	{
		if(k3d::iproperty_collection* const property_collection = unknown().wrapped_ptr<k3d::iproperty_collection>())
		{
			if(k3d::iproperty* const property = k3d::property::get(*property_collection, Name))
			{
				if(k3d::iwritable_property* const writable = dynamic_cast<k3d::iwritable_property*>(property))
				{
					writable->property_set_value(python_to_any(Value, property->property_type()));
					return;
				}

				throw std::invalid_argument("read-only property: " + Name);
			}
		}
	}

	// Otherwise, fallback on default behavior ...
	Self.attr("__dict__")[Name] = Value;
}

static bool eq(const object& Self, const object& Other)
{
	if(Other == boost::python::object())
		return false;

	extract<iunknown_wrapper> self(Self);
	extract<iunknown_wrapper> other(Other);

	return self == other;
}

static bool ne(const object& Self, const object& Other)
{
	if(Other == boost::python::object())
		return false;

	extract<iunknown_wrapper> self(Self);
	extract<iunknown_wrapper> other(Other);

	return !(self == other);
}

void define_class_iunknown()
{
	class_<iunknown_wrapper>("iunknown", 
		"Abstract interface that represents an object with unknown capabilities.\n\n"
		"Methods for other implemented interfaces are added dynamically at runtime.",
		no_init)
		.def("__getattr__", getattr)
		.def("__setattr__", setattr)
		.def("__eq__", eq)
		.def("__ne__", ne)
		;
}

} // namespace python

} // namespace k3d