resource_object.h
1 /*
2 ** ClanLib SDK
3 ** Copyright (c) 1997-2015 The ClanLib Team
4 **
5 ** This software is provided 'as-is', without any express or implied
6 ** warranty. In no event will the authors be held liable for any damages
7 ** arising from the use of this software.
8 **
9 ** Permission is granted to anyone to use this software for any purpose,
10 ** including commercial applications, and to alter it and redistribute it
11 ** freely, subject to the following restrictions:
12 **
13 ** 1. The origin of this software must not be misrepresented; you must not
14 ** claim that you wrote the original software. If you use this software
15 ** in a product, an acknowledgment in the product documentation would be
16 ** appreciated but is not required.
17 ** 2. Altered source versions must be plainly marked as such, and must not be
18 ** misrepresented as being the original software.
19 ** 3. This notice may not be removed or altered from any source distribution.
20 **
21 ** Note: Some of the libraries ClanLib may link to may have additional
22 ** requirements or restrictions.
23 **
24 ** File Author(s):
25 **
26 ** Magnus Norddahl
27 */
28
29
30 #pragma once
31
32 #include "resource.h"
33
34 namespace clan
35 {
38
40 class ResourceObject
41 {
42 public:
43 ResourceObject()
44 {
45 }
46
47 template<typename Type>
48 ResourceObject(const Resource<Type> &resource)
49 : object(resource.handle())
50 {
51 }
52
53 bool is_null() const { return !object; }
54
55 template<typename Type>
56 Resource<Type> cast()
57 {
58 if (object)
59 {
60 std::shared_ptr<Resource_Impl<Type> > resource = std::dynamic_pointer_cast<Resource_Impl<Type> >(object);
61 if (!resource)
62 throw Exception("ResourceObject type mismatch");
63 return Resource<Type>(resource);
64 }
65 else
66 {
67 throw Exception("ResourceObject is null");
68 }
69 }
70
71 bool operator<(const ResourceObject &other) const { return object < other.object; }
72 bool operator<=(const ResourceObject &other) const { return object <= other.object; }
73 bool operator>(const ResourceObject &other) const { return object > other.object; }
74 bool operator>=(const ResourceObject &other) const { return object >= other.object; }
75 bool operator==(const ResourceObject &other) const { return object == other.object; }
76 bool operator!=(const ResourceObject &other) const { return object != other.object; }
77
78 private:
79 std::shared_ptr<Resource_BaseImpl> object;
80 };
81
82 }
83
clan::ResourceObject
Resource proxy of any type.
Definition: resource_object.h:40
clan
Definition: clanapp.h:35
clan::Resource
Resource proxy of a specific type.
Definition: resource.h:58
clan::ResourceObject::operator==
bool operator==(const ResourceObject &other) const
Definition: resource_object.h:75
clan::ResourceObject::cast
Resource< Type > cast()
Definition: resource_object.h:56
clan::ResourceObject::operator<=
bool operator<=(const ResourceObject &other) const
Definition: resource_object.h:72
clan::Exception
Top-level exception class.
Definition: exception.h:42
clan::ResourceObject::operator>=
bool operator>=(const ResourceObject &other) const
Definition: resource_object.h:74
clan::ResourceObject::ResourceObject
ResourceObject(const Resource< Type > &resource)
Definition: resource_object.h:48
clan::ResourceObject::operator!=
bool operator!=(const ResourceObject &other) const
Definition: resource_object.h:76
clan::ResourceObject::operator>
bool operator>(const ResourceObject &other) const
Definition: resource_object.h:73
clan::ResourceObject::operator<
bool operator<(const ResourceObject &other) const
Definition: resource_object.h:71
clan::ResourceObject::is_null
bool is_null() const
Definition: resource_object.h:53
clan::Resource_Impl
Definition: resource.h:47
clan::ResourceObject::ResourceObject
ResourceObject()
Definition: resource_object.h:43