3 (defun gvalue-type (gvalue)
4 (foreign-slot-value gvalue 'g-value :type))
6 (defmacro ev-case (keyform &body clauses)
7 "Macro that is an analogue of CASE except that it evaluates keyforms"
8 (let ((value (gensym)))
9 `(let ((,value ,keyform))
12 for (key . forms) in clauses
16 `((equalp ,key ,value) ,@forms)))))))
18 (defun parse-gvalue (gvalue)
19 "Parses the GValue structure and returns the corresponding Lisp object.
21 @arg[value]{a C pointer to the GValue structure}
22 @return{value contained in the GValue structure. Type of value depends on GValue type}"
23 (let* ((type (ensure-g-type (gvalue-type gvalue)))
24 (fundamental-type (ensure-g-type (g-type-fundamental type))))
26 ((= type (ensure-g-type (g-strv-get-type))) (convert-from-foreign (g-value-get-boxed gvalue) '(glib:gstrv :free-from-foreign nil)))
27 (t (ev-case fundamental-type
28 (+g-type-invalid+ (error "GValue is of invalid type (~A)" (g-type-name type)))
30 (+g-type-char+ (g-value-get-char gvalue))
31 (+g-type-uchar+ (g-value-get-uchar gvalue))
32 (+g-type-boolean+ (g-value-get-boolean gvalue))
33 (+g-type-int+ (g-value-get-int gvalue))
34 (+g-type-uint+ (g-value-get-uint gvalue))
35 (+g-type-long+ (g-value-get-long gvalue))
36 (+g-type-ulong+ (g-value-get-ulong gvalue))
37 (+g-type-int64+ (g-value-get-int64 gvalue))
38 (+g-type-uint64+ (g-value-get-uint64 gvalue))
39 (+g-type-enum+ (parse-gvalue-enum gvalue))
40 (+g-type-flags+ (parse-gvalue-flags gvalue))
41 (+g-type-float+ (g-value-get-float gvalue))
42 (+g-type-double+ (g-value-get-double gvalue))
43 (+g-type-string+ (g-value-get-string gvalue))
44 (+g-type-pointer+ (g-value-get-pointer gvalue))
45 (+g-type-boxed+ (parse-gvalue-boxed gvalue))
46 (+g-type-param+ (parse-g-param-spec (g-value-get-param gvalue)))
47 (+g-type-object+ (parse-gvalue-object gvalue))
48 (+g-type-interface+ (parse-gvalue-object gvalue))
49 (t (error "Unknown type: ~A (~A)" type (g-type-name type))))))))
51 (defun set-g-value (gvalue value type &key zero-g-value unset-g-value (g-value-init t))
52 "Assigns the GValue structure @code{gvalue} the value @code{value} of GType @code{type}.
54 @arg[gvalue]{a C pointer to the GValue structure}
55 @arg[value]{a Lisp object that is to be assigned}
56 @arg[type]{a GType that is to be assigned}
57 @arg[zero-g-value]{a boolean specifying whether GValue should be zero-initialized before assigning. See @fun{g-value-zero}}
58 @arg[unset-g-value]{a boolean specifying whether GValue should be \"unset\" before assigning. See @fun{g-value-unset}. The \"true\" value should not be passed to both @code{zero-g-value} and @code{unset-g-value} arguments}
59 @arg[g-value-init]{a boolean specifying where GValue should be initialized}"
60 (setf type (ensure-g-type type))
62 (zero-g-value (g-value-zero gvalue))
63 (unset-g-value (g-value-unset gvalue)))
64 (when g-value-init (g-value-init gvalue type))
65 (let ((fundamental-type (ensure-g-type (g-type-fundamental type))))
67 ((= type (ensure-g-type (g-strv-get-type))) (g-value-set-boxed gvalue (convert-to-foreign value 'glib:gstrv)))
68 (t (ev-case fundamental-type
69 (+g-type-invalid+ (error "Invalid type (~A)" type))
71 (+g-type-char+ (g-value-set-char gvalue value))
72 (+g-type-uchar+ (g-value-set-uchar gvalue value))
73 (+g-type-boolean+ (g-value-set-boolean gvalue value))
74 (+g-type-int+ (g-value-set-int gvalue value))
75 (+g-type-uint+ (g-value-set-uint gvalue value))
76 (+g-type-long+ (g-value-set-long gvalue value))
77 (+g-type-ulong+ (g-value-set-ulong gvalue value))
78 (+g-type-int64+ (g-value-set-int64 gvalue value))
79 (+g-type-uint64+ (g-value-set-uint64 gvalue value))
80 (+g-type-enum+ (set-gvalue-enum gvalue value))
81 (+g-type-flags+ (set-gvalue-flags gvalue value))
82 (+g-type-float+ (unless (realp value) (error "~A is not a real number" value)) (g-value-set-float gvalue (coerce value 'single-float)))
83 (+g-type-double+ (unless (realp value) (error "~A is not a real number" value)) (g-value-set-double gvalue (coerce value 'double-float)))
84 (+g-type-string+ (g-value-set-string gvalue value))
85 (+g-type-pointer+ (g-value-set-pointer gvalue value))
86 (+g-type-boxed+ (set-gvalue-boxed gvalue value))
87 ;(+g-type-param+ (set-gvalue-param gvalue value))
88 (+g-type-object+ (set-gvalue-object gvalue value))
89 (+g-type-interface+ (set-gvalue-object gvalue value))
90 (t (error "Unknown type: ~A (~A)" type (g-type-name type))))))))
94 (defvar *registered-enum-types* (make-hash-table :test 'equal))
95 (defun register-enum-type (name type)
96 (setf (gethash name *registered-enum-types*) type))
97 (defun registered-enum-type (name)
98 (gethash name *registered-enum-types*))
100 (defun parse-gvalue-enum (gvalue)
101 (let* ((g-type (gvalue-type gvalue))
102 (type-name (g-type-name g-type))
103 (enum-type (registered-enum-type type-name)))
105 (error "Enum ~A is not registered" type-name))
106 (convert-from-foreign (g-value-get-enum gvalue) enum-type)))
108 (defun set-gvalue-enum (gvalue value)
109 (let* ((g-type (gvalue-type gvalue))
110 (type-name (g-type-name g-type))
111 (enum-type (registered-enum-type type-name)))
113 (error "Enum ~A is not registered" type-name))
114 (g-value-set-enum gvalue (convert-to-foreign value enum-type))))
119 (defvar *registered-flags-types* (make-hash-table :test 'equal))
120 (defun register-flags-type (name type)
121 (setf (gethash name *registered-flags-types*) type))
122 (defun registered-flags-type (name)
123 (gethash name *registered-flags-types*))
125 (defun parse-gvalue-flags (gvalue)
126 (let* ((g-type (gvalue-type gvalue))
127 (type-name (g-type-name g-type))
128 (flags-type (registered-flags-type type-name)))
130 (error "Flags ~A is not registered" type-name))
131 (convert-from-foreign (g-value-get-flags gvalue) flags-type)))
133 (defun set-gvalue-flags (gvalue value)
134 (let* ((g-type (gvalue-type gvalue))
135 (type-name (g-type-name g-type))
136 (flags-type (registered-flags-type type-name)))
138 (error "Flags ~A is not registered" type-name))
139 (g-value-set-flags gvalue (convert-to-foreign value flags-type))))
143 (defun parse-gvalue-object (gvalue)
144 (get-g-object-for-pointer (g-value-get-object gvalue)))
146 (defun set-gvalue-object (gvalue value)
147 (g-value-set-object gvalue (if value (pointer value) (null-pointer))))