X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=glib%2Fgobject.gvalue.lisp;h=8e9fd0512ec08ec4a70c08cbfdc4f81eb367aa54;hb=8db173e3df82074b8ca96d00304c4e63b499f598;hp=ed67c9b0c0276d7619d830b9e8ae802dd133e3e3;hpb=ddaa0292b675c0336e20dfcca1ce3c7dcfc8ccee;p=cl-gtk2.git diff --git a/glib/gobject.gvalue.lisp b/glib/gobject.gvalue.lisp index ed67c9b..8e9fd05 100644 --- a/glib/gobject.gvalue.lisp +++ b/glib/gobject.gvalue.lisp @@ -8,3 +8,154 @@ for i from 0 below (foreign-type-size 'g-value) do (setf (mem-ref g-value :uchar i) 0))) +(defun g-value-type (gvalue) + (foreign-slot-value gvalue 'g-value :type)) + +(defmacro ev-case (keyform &body clauses) + "Macro that is an analogue of CASE except that it evaluates keyforms" + (let ((value (gensym))) + `(let ((,value ,keyform)) + (cond + ,@(loop + for (key . forms) in clauses + collect + (if (eq key t) + `(t ,@forms) + `((equalp ,key ,value) ,@forms))))))) + +(defgeneric parse-g-value-for-type (gvalue-ptr type-numeric parse-kind)) + +(defmethod parse-g-value-for-type (gvalue-ptr type-numeric parse-kind) + (if (g-type= type-numeric (g-type-fundamental type-numeric)) + (call-next-method) + (parse-g-value-for-type gvalue-ptr (g-type-numeric (g-type-fundamental type-numeric)) parse-kind))) + +(defun parse-g-value (gvalue &key (parse-kind :get-property)) + "Parses the GValue structure and returns the corresponding Lisp object. + +@arg[value]{a C pointer to the GValue structure} +@return{value contained in the GValue structure. Type of value depends on GValue type}" + (let* ((type (g-type-numeric (g-value-type gvalue))) + (fundamental-type (g-type-numeric (g-type-fundamental type)))) + (ev-case fundamental-type + (+g-type-invalid+ (error "GValue is of invalid type (~A)" (g-type-name type))) + (+g-type-void+ nil) + (+g-type-char+ (g-value-get-char gvalue)) + (+g-type-uchar+ (g-value-get-uchar gvalue)) + (+g-type-boolean+ (g-value-get-boolean gvalue)) + (+g-type-int+ (g-value-get-int gvalue)) + (+g-type-uint+ (g-value-get-uint gvalue)) + (+g-type-long+ (g-value-get-long gvalue)) + (+g-type-ulong+ (g-value-get-ulong gvalue)) + (+g-type-int64+ (g-value-get-int64 gvalue)) + (+g-type-uint64+ (g-value-get-uint64 gvalue)) + (+g-type-enum+ (parse-g-value-enum gvalue)) + (+g-type-flags+ (parse-g-value-flags gvalue)) + (+g-type-float+ (g-value-get-float gvalue)) + (+g-type-double+ (g-value-get-double gvalue)) + (+g-type-string+ (g-value-get-string gvalue)) + (t (parse-g-value-for-type gvalue type parse-kind))))) + +(defmethod parse-g-value-for-type (gvalue-ptr (type-numeric (eql +g-type-pointer+)) parse-kind) + (declare (ignore parse-kind)) + (g-value-get-pointer gvalue-ptr)) + +(defmethod parse-g-value-for-type (gvalue-ptr (type-numeric (eql +g-type-param+)) parse-kind) + (declare (ignore parse-kind)) + (parse-g-param-spec (g-value-get-param gvalue-ptr))) + +(defgeneric set-gvalue-for-type (gvalue-ptr type-numeric value)) + +(defmethod set-gvalue-for-type (gvalue-ptr type-numeric value) + (if (g-type= type-numeric (g-type-fundamental type-numeric)) + (call-next-method) + (set-gvalue-for-type gvalue-ptr (g-type-numeric (g-type-fundamental type-numeric)) value))) + +(defun set-g-value (gvalue value type &key zero-g-value unset-g-value (g-value-init t)) + "Assigns the GValue structure @code{gvalue} the value @code{value} of GType @code{type}. + +@arg[gvalue]{a C pointer to the GValue structure} +@arg[value]{a Lisp object that is to be assigned} +@arg[type]{a GType that is to be assigned} +@arg[zero-g-value]{a boolean specifying whether GValue should be zero-initialized before assigning. See @fun{g-value-zero}} +@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} +@arg[g-value-init]{a boolean specifying where GValue should be initialized}" + (setf type (g-type-numeric type)) + (cond + (zero-g-value (g-value-zero gvalue)) + (unset-g-value (g-value-unset gvalue))) + (when g-value-init (g-value-init gvalue type)) + (let ((fundamental-type (ensure-g-type (g-type-fundamental type)))) + (ev-case fundamental-type + (+g-type-invalid+ (error "Invalid type (~A)" type)) + (+g-type-void+ nil) + (+g-type-char+ (g-value-set-char gvalue value)) + (+g-type-uchar+ (g-value-set-uchar gvalue value)) + (+g-type-boolean+ (g-value-set-boolean gvalue value)) + (+g-type-int+ (g-value-set-int gvalue value)) + (+g-type-uint+ (g-value-set-uint gvalue value)) + (+g-type-long+ (g-value-set-long gvalue value)) + (+g-type-ulong+ (g-value-set-ulong gvalue value)) + (+g-type-int64+ (g-value-set-int64 gvalue value)) + (+g-type-uint64+ (g-value-set-uint64 gvalue value)) + (+g-type-enum+ (set-gvalue-enum gvalue value)) + (+g-type-flags+ (set-gvalue-flags gvalue value)) + (+g-type-float+ (unless (realp value) (error "~A is not a real number" value)) (g-value-set-float gvalue (coerce value 'single-float))) + (+g-type-double+ (unless (realp value) (error "~A is not a real number" value)) (g-value-set-double gvalue (coerce value 'double-float))) + (+g-type-string+ (g-value-set-string gvalue value)) + (t (set-gvalue-for-type gvalue type value))))) + +(defmethod set-gvalue-for-type (gvalue-ptr (type-numeric (eql +g-type-pointer+)) value) + (g-value-set-pointer gvalue-ptr value)) + +(defmethod set-gvalue-for-type (gvalue-ptr (type-numeric (eql +g-type-param+)) value) + (error "Setting of GParam is not implemented")) + +;;Enums + +(defvar *registered-enum-types* (make-hash-table :test 'equal)) +(defun register-enum-type (name type) + (setf (gethash name *registered-enum-types*) type)) +(defun registered-enum-type (name) + (gethash name *registered-enum-types*)) + +(defun parse-g-value-enum (gvalue) + (let* ((g-type (g-value-type gvalue)) + (type-name (g-type-name g-type)) + (enum-type (registered-enum-type type-name))) + (unless enum-type + (error "Enum ~A is not registered" type-name)) + (convert-from-foreign (g-value-get-enum gvalue) enum-type))) + +(defun set-gvalue-enum (gvalue value) + (let* ((g-type (g-value-type gvalue)) + (type-name (g-type-name g-type)) + (enum-type (registered-enum-type type-name))) + (unless enum-type + (error "Enum ~A is not registered" type-name)) + (g-value-set-enum gvalue (convert-to-foreign value enum-type)))) + + +;;Flags + +(defvar *registered-flags-types* (make-hash-table :test 'equal)) +(defun register-flags-type (name type) + (setf (gethash name *registered-flags-types*) type)) +(defun registered-flags-type (name) + (gethash name *registered-flags-types*)) + +(defun parse-g-value-flags (gvalue) + (let* ((g-type (g-value-type gvalue)) + (type-name (g-type-name g-type)) + (flags-type (registered-flags-type type-name))) + (unless flags-type + (error "Flags ~A is not registered" type-name)) + (convert-from-foreign (g-value-get-flags gvalue) flags-type))) + +(defun set-gvalue-flags (gvalue value) + (let* ((g-type (g-value-type gvalue)) + (type-name (g-type-name g-type)) + (flags-type (registered-flags-type type-name))) + (unless flags-type + (error "Flags ~A is not registered" type-name)) + (g-value-set-flags gvalue (convert-to-foreign value flags-type))))