1 (in-package :gobject.ffi)
3 (defctype g-type gsize)
5 (defstruct gtype name %id)
7 (defvar *name-to-gtype* (make-hash-table :test 'equal))
8 (defvar *id-to-gtype* (make-hash-table))
9 (defvar *gtype-lock* (bt:make-lock "gtype lock"))
11 (defun invalidate-gtypes ()
12 (bt:with-lock-held (*gtype-lock*)
13 (clrhash *id-to-gtype*)
14 (iter (for (name gtype) in-hashtable *name-to-gtype*)
15 (setf (gtype-%id gtype) nil))))
17 (at-finalize () (invalidate-gtypes))
19 (defcfun (%g-type-from-name "g_type_from_name") g-type
22 (defcfun (%g-type-name "g_type_name") (:string :free-from-foreign nil)
25 (defun gtype-from-name (name)
26 (when (null name) (return-from gtype-from-name nil))
27 (bt:with-lock-held (*gtype-lock*)
28 (let ((type (gethash name *name-to-gtype*)))
30 (when (null (gtype-%id type))
31 (let ((n (%g-type-from-name name)))
33 (warn "GType ~A is not known to GObject" name)
35 (setf (gtype-%id type) n
36 (gethash n *id-to-gtype*) type)))))
37 (return-from gtype-from-name type)))
38 (let ((n (%g-type-from-name name)))
40 (warn "GType ~A is not known to GObject" name)
42 (let ((type (make-gtype :name (copy-seq name) :%id n)))
43 (setf (gethash n *id-to-gtype*) type
44 (gethash name *name-to-gtype*) type)
45 (return-from gtype-from-name type)))))
47 (defun gtype-from-id (id)
48 (when (zerop id) (return-from gtype-from-id nil))
49 (bt:with-lock-held (*gtype-lock*)
50 (let ((type (gethash id *id-to-gtype*)))
52 (return-from gtype-from-id type)))
53 (let ((name (%g-type-name id)))
55 (error "GType with ~A is not known to GObject" id))
56 (let ((type (gethash name *name-to-gtype*)))
58 (setf (gtype-%id type) id
59 (gethash id *id-to-gtype*) type)
60 (return-from gtype-from-id type))
61 (let ((type (make-gtype :name name :%id id)))
62 (setf (gethash id *id-to-gtype*) type
63 (gethash name *name-to-gtype*) type)
64 (return-from gtype-from-id type))))))
66 (defun gtype-id (gtype)
67 (when (null gtype) (return-from gtype-id 0))
68 (when (gtype-%id gtype) (return-from gtype-id (gtype-%id gtype)))
69 (bt:with-lock-held (*gtype-lock*)
70 (let ((n (%g-type-from-name (gtype-name gtype))))
72 (warn "GType ~A is not known to GObject" (gtype-name gtype))
73 (return-from gtype-id 0))
74 (setf (gtype-%id gtype) n
75 (gethash n *id-to-gtype*) gtype)
82 (string (gtype-from-name thing))
83 (integer (gtype-from-id thing))))
85 (define-foreign-type g-type-designator ()
86 ((mangled-p :initarg :mangled-p
87 :reader g-type-designator-mangled-p
89 :documentation "Whether the type designator is mangled with G_SIGNAL_TYPE_STATIC_SCOPE flag"))
90 (:documentation "Values of this CFFI foreign type identify the GType. GType is designated by a its name (a string) or a numeric identifier. Functions accept GType designators as a string or integer and return them as a string. Functions @fun{g-type-name} and @fun{g-type-from-name} are used to convert between name and numeric identifier.
92 Numeric identifier of GType may be different between different program runs. But string identifier of GType does not change.")
94 (:simple-parser g-type-designator))
96 (defun unmangle-g-type (g-type)
97 (logxor g-type (ldb (byte 1 0) g-type)));;subtract the G_SIGNAL_TYPE_STATIC_SCOPE
99 (defmethod translate-from-foreign (value (type g-type-designator))
100 (g-type-name (if (g-type-designator-mangled-p type)
101 (unmangle-g-type value)
104 (defmethod translate-to-foreign (value (type g-type-designator))
106 (string (g-type-from-name value))
110 (defun g-type-numeric (g-type-designator)
111 (etypecase g-type-designator
112 (string (g-type-from-name g-type-designator))
113 (integer g-type-designator)
116 (defun g-type-string (g-type-designator)
117 (etypecase g-type-designator
118 (string (g-type-name g-type-designator))
119 (integer (g-type-name g-type-designator))
122 (defcfun (g-type-name "g_type_name") :string
123 "Returns the name of a GType.@see{g-type-from-name}
127 \(g-type-from-name \"GtkLabel\")
129 \(g-type-name 7151952)
132 @arg[type]{GType designator (see @class{g-type-designator})}
134 (type g-type-designator))
136 (defcfun (g-type-from-name "g_type_from_name") g-type
137 "Returns the numeric identifier of a GType by its name. @see{g-type-name}
141 \(g-type-from-name \"GtkLabel\")
143 \(g-type-name 7151952)
146 @arg[name]{a string - name of GType}
150 (defun g-type= (type-1 type-2)
151 (= (g-type-numeric type-1)
152 (g-type-numeric type-2)))
154 (defun g-type/= (type-1 type-2)
155 (/= (g-type-numeric type-1)
156 (g-type-numeric type-2)))