X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=glib%2Fgobject.gvalue.lisp;h=a353c9a34ebbf6bef473d5aac417d3083de7bf56;hb=7bca05f5d857c03b74eafd7c0c85495dfe3330ff;hp=4162ee79dfc9877bde2c69a92b9da1b13f409766;hpb=af90ac5cff9dbb5f44677cc4726eee60ab88bc5d;p=cl-gtk2.git diff --git a/glib/gobject.gvalue.lisp b/glib/gobject.gvalue.lisp index 4162ee7..a353c9a 100644 --- a/glib/gobject.gvalue.lisp +++ b/glib/gobject.gvalue.lisp @@ -1,13 +1,5 @@ (in-package :gobject) -(defcfun g-value-init (:pointer g-value) - "Initializes the GValue @code{value} with the default value of @code{type} - -@arg[value]{a C pointer to the GValue structure} -@arg[type]{an integer specifying the GType}" - (value (:pointer g-value)) - (type g-type)) - (defun g-value-zero (g-value) "Initializes the GValue in \"unset\" state. @@ -16,23 +8,163 @@ for i from 0 below (foreign-type-size 'g-value) do (setf (mem-ref g-value :uchar i) 0))) -(defcfun g-value-copy :void - (src-value (:pointer g-value)) - (dst-value (:pointer g-value))) +(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 gtype parse-kind)) + +(defmethod parse-g-value-for-type :around (gvalue-ptr gtype parse-kind) + (assert (typep gtype '(or gtype nil))) + (call-next-method)) + +(defmethod parse-g-value-for-type (gvalue-ptr gtype parse-kind) + (if (eq gtype (g-type-fundamental gtype)) + (call-next-method) + (parse-g-value-for-type gvalue-ptr (g-type-fundamental gtype) 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-value-type gvalue)) + (fundamental-type (g-type-fundamental type))) + (ev-case fundamental-type + ((gtype +g-type-invalid+) (error "GValue is of invalid type (~A)" (gtype-name type))) + ((gtype +g-type-void+) nil) + ((gtype +g-type-char+) (g-value-get-char gvalue)) + ((gtype +g-type-uchar+) (g-value-get-uchar gvalue)) + ((gtype +g-type-boolean+) (g-value-get-boolean gvalue)) + ((gtype +g-type-int+) (g-value-get-int gvalue)) + ((gtype +g-type-uint+) (g-value-get-uint gvalue)) + ((gtype +g-type-long+) (g-value-get-long gvalue)) + ((gtype +g-type-ulong+) (g-value-get-ulong gvalue)) + ((gtype +g-type-int64+) (g-value-get-int64 gvalue)) + ((gtype +g-type-uint64+) (g-value-get-uint64 gvalue)) + ((gtype +g-type-enum+) (parse-g-value-enum gvalue)) + ((gtype +g-type-flags+) (parse-g-value-flags gvalue)) + ((gtype +g-type-float+) (g-value-get-float gvalue)) + ((gtype +g-type-double+) (g-value-get-double gvalue)) + ((gtype +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 (eql (gtype +g-type-pointer+))) parse-kind) + (declare (ignore parse-kind)) + (g-value-get-pointer gvalue-ptr)) + +(defmethod parse-g-value-for-type (gvalue-ptr (type (eql (gtype +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 value)) + +(defmethod set-gvalue-for-type :around (gvalue-ptr type value) + (assert (typep type '(or gtype null))) + (call-next-method)) + +(defmethod set-gvalue-for-type (gvalue-ptr type value) + (if (eq type (g-type-fundamental type)) + (call-next-method) + (set-gvalue-for-type gvalue-ptr (g-type-fundamental type) 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 (gtype 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 (g-type-fundamental type))) + (ev-case fundamental-type + ((gtype +g-type-invalid+) (error "Invalid type (~A)" type)) + ((gtype +g-type-void+) nil) + ((gtype +g-type-char+) (g-value-set-char gvalue value)) + ((gtype +g-type-uchar+) (g-value-set-uchar gvalue value)) + ((gtype +g-type-boolean+) (g-value-set-boolean gvalue value)) + ((gtype +g-type-int+) (g-value-set-int gvalue value)) + ((gtype +g-type-uint+) (g-value-set-uint gvalue value)) + ((gtype +g-type-long+) (g-value-set-long gvalue value)) + ((gtype +g-type-ulong+) (g-value-set-ulong gvalue value)) + ((gtype +g-type-int64+) (g-value-set-int64 gvalue value)) + ((gtype +g-type-uint64+) (g-value-set-uint64 gvalue value)) + ((gtype +g-type-enum+) (set-gvalue-enum gvalue value)) + ((gtype +g-type-flags+) (set-gvalue-flags gvalue value)) + ((gtype +g-type-float+) (unless (realp value) (error "~A is not a real number" value)) (g-value-set-float gvalue (coerce value 'single-float))) + ((gtype +g-type-double+) (unless (realp value) (error "~A is not a real number" value)) (g-value-set-double gvalue (coerce value 'double-float))) + ((gtype +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 (eql (gtype +g-type-pointer+))) value) + (g-value-set-pointer gvalue-ptr value)) + +(defmethod set-gvalue-for-type (gvalue-ptr (type (eql (gtype +g-type-param+))) value) + (declare (ignore gvalue-ptr 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 (gtype-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))) -(defcfun g-value-reset (:pointer g-value) - (value (:pointer g-value))) +(defun set-gvalue-enum (gvalue value) + (let* ((g-type (g-value-type gvalue)) + (type-name (gtype-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)))) -(defcfun g-value-unset (:pointer g-value) - "Clears the current value in @code{value} and \"unsets\" the type, releasing all resources associated with this GValue. An unset value is the same as an unitialized GValue. -@arg[value]{a C pointer to the GValue structure}" - (value (:pointer g-value))) +;;Flags -(defcfun g-value-set-instance :void - (value (:pointer g-value)) - (instance :pointer)) +(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*)) -(defcfun g-strdup-value-contents :string - (value (:pointer g-value))) +(defun parse-g-value-flags (gvalue) + (let* ((g-type (g-value-type gvalue)) + (type-name (gtype-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 (gtype-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))))