From 94f15c3c3cc7b65dd194b6c10bad3b19a3e31f53 Mon Sep 17 00:00:00 2001 Message-Id: <94f15c3c3cc7b65dd194b6c10bad3b19a3e31f53.1714636867.git.mdw@distorted.org.uk> From: Mark Wooding Date: Sun, 29 Apr 2001 20:19:25 +0000 Subject: [PATCH] Initial checkin Organization: Straylight/Edgeware From: espen --- glib/gboxed.lisp | 108 ++++++++++++ glib/genums.lisp | 190 +++++++++++++++++++++ glib/proxy.lisp | 422 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 720 insertions(+) create mode 100644 glib/gboxed.lisp create mode 100644 glib/genums.lisp create mode 100644 glib/proxy.lisp diff --git a/glib/gboxed.lisp b/glib/gboxed.lisp new file mode 100644 index 0000000..1bf2916 --- /dev/null +++ b/glib/gboxed.lisp @@ -0,0 +1,108 @@ +;; Common Lisp bindings for GTK+ v2.0 +;; Copyright (C) 2001 Espen S. Johnsen +;; +;; This library is free software; you can redistribute it and/or +;; modify it under the terms of the GNU Lesser General Public +;; License as published by the Free Software Foundation; either +;; version 2 of the License, or (at your option) any later version. +;; +;; This library is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +;; Lesser General Public License for more details. +;; +;; You should have received a copy of the GNU Lesser General Public +;; License along with this library; if not, write to the Free Software +;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +;; $Id: gboxed.lisp,v 1.1 2001-04-29 20:19:25 espen Exp $ + +(in-package "GLIB") + + +(eval-when (:compile-toplevel :load-toplevel :execute) + (defclass boxed (alien-structure) + () + (:metaclass proxy-class))) + +(defmethod initialize-proxy ((boxed boxed) &rest initargs + &key location weak-ref) + (declare (ignore initargs)) + (setf + (slot-value boxed 'location) + (if weak-ref + (%boxed-copy (find-type-number (class-of boxed)) location) + location)) + (call-next-method)) + +(defmethod instance-finalizer ((boxed boxed)) + (let ((location (proxy-location boxed)) + (type-number (find-type-number (class-of boxed)))) + (declare (type system-area-pointer location)) + #'(lambda () + (%boxed-free type-number location) + (remove-cached-instance location)))) + + +(deftype-method translate-to-alien boxed (type-spec boxed &optional weak-ref) + (if weak-ref + `(proxy-location ,boxed) + `(let ((boxed ,boxed)) + (%boxed-copy + (find-type-number type-spec) + (proxy-location boxed))))) + +(deftype-method unreference-alien boxed (type-spec c-struct) + `(%boxed-free ,(find-type-number type-spec) ,c-struct)) + + +(defbinding %boxed-copy () pointer + (type type-number) + (location pointer)) + +(defbinding %boxed-free () nil + (type type-number) + (location pointer)) + + +;;;; Metaclass for boxed classes + +(eval-when (:compile-toplevel :load-toplevel :execute) + (defclass boxed-class (proxy-class))) + + +(defmethod shared-initialize ((class boxed-class) names + &rest initargs + &key name alien-name type-init) + (declare (ignore initargs names)) + (call-next-method) + + (let* ((class-name (or name (class-name class))) + (type-number + (cond + ((and alien-name type-init) + (error + "Specify either :type-init or :alien-name for class ~A" + class-name)) + (alien-name (type-number-from-alien-name (first alien-name))) + (type-init + (funcall (alien-function (first type-init) '(unsigned 32)))) + (t + (or + (type-number-from-alien-name + (default-alien-type-name class-name) nil) + (funcall + (alien-function + (default-alien-fname (format nil "~A_get_type" class-name)) + '(unsigned 32)))))))) + (setf (find-type-number class) type-number))) + + +(defmethod validate-superclass + ((class boxed-class) (super pcl::standard-class)) + (subtypep (class-name super) 'boxed)) + + +;;;; Initializing type numbers + +(setf (alien-type-name 'boxed) "GBoxed") diff --git a/glib/genums.lisp b/glib/genums.lisp new file mode 100644 index 0000000..d2cbe4a --- /dev/null +++ b/glib/genums.lisp @@ -0,0 +1,190 @@ +;; Common Lisp bindings for GTK+ v2.0 +;; Copyright (C) 2000-2001 Espen S. Johnsen +;; +;; This library is free software; you can redistribute it and/or +;; modify it under the terms of the GNU Lesser General Public +;; License as published by the Free Software Foundation; either +;; version 2 of the License, or (at your option) any later version. +;; +;; This library is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +;; Lesser General Public License for more details. +;; +;; You should have received a copy of the GNU Lesser General Public +;; License along with this library; if not, write to the Free Software +;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +;; $Id: genums.lisp,v 1.1 2001-04-29 20:19:25 espen Exp $ + +(in-package "GLIB") + + +(defun %map-mappings (args op) + (let ((current-value 0)) + (map + 'list + #'(lambda (mapping) + (destructuring-bind (symbol &optional (value current-value)) + (mklist mapping) + (setf current-value (1+ value)) + (case op + (:enum-int (list symbol value)) + (:flags-int (list symbol value #|(ash 1 value)|#)) + (:int-enum (list value symbol)) + (:int-flags (list value #|(ash 1 value)|# symbol)) + (:symbols symbol)))) + (if (integerp (first args)) + (rest args) + args)))) + + +;;;; Enum type + +(deftype enum (&rest args) + `(member ,@(%map-mappings args :symbols))) + +(deftype-method translate-type-spec enum (type-spec) + (let ((args (cdr (type-expand-to 'enum type-spec)))) + (if (integerp (first args)) + (translate-type-spec `(signed ,(first args))) + (translate-type-spec 'signed)))) + +(deftype-method size-of enum (type-spec) + (let ((args (cdr (type-expand-to 'enum type-spec)))) + (if (integerp (first args)) + (size-of `(signed ,(first args))) + (size-of 'signed)))) + +(deftype-method translate-to-alien enum (type-spec expr &optional weak-ref) + (declare (ignore weak-ref)) + (let ((args (cdr (type-expand-to 'enum type-spec)))) + `(ecase ,expr + ,@(%map-mappings args :enum-int)))) + +(deftype-method translate-from-alien enum (type-spec expr &optional weak-ref) + (declare (ignore weak-ref)) + (destructuring-bind (name &rest args) (type-expand-to 'enum type-spec) + (declare (ignore name)) + `(ecase ,expr + ,@(%map-mappings args :int-enum)))) + +(setf (alien-type-name 'enum) "GEnum") + +(eval-when (:compile-toplevel :load-toplevel :execute) + (defclass %enum-value (alien-structure) + ((value :allocation :alien :type int) + (name :allocation :alien :type string) + (nickname :allocation :alien :type string)) + (:metaclass proxy-class))) + +(defbinding %enum-class-values () (glist %enum-value) + (class pointer)) + +(defun %query-enum-values (type-number) + (mapcar + #'(lambda (enum-value) + (list + (intern + (substitute + #\- #\_ (string-upcase (slot-value enum-value 'nickname))) "KEYWORD") + (slot-value enum-value 'value))) + (%enum-class-values (type-class-peek type-number)))) + +(defun define-enum-by-query (init-fname &optional name) + (let ((type-number (type-init name init-fname))) + (unless (= (type-parent type-number) (find-type-number 'enum)) + (error "~A is not an enum type" (alien-type-name type-number))) + + (type-class-ref type-number) + (setf (find-type-number name) type-number) + (let ((expanded (cons 'enum (%query-enum-values type-number))) + (name (or name (default-type-name (alien-type-name type-number))))) + (lisp::%deftype + name + #'(lambda (whole) + (unless (zerop (length (cdr whole))) + (lisp::do-arg-count-error 'deftype name (cdr whole) nil 0 0)) + expanded))))) + + +;;;; Flags type + +(deftype flags (&rest args) + `(or + null + (cons + (member ,@(%map-mappings args :symbols)) + list))) + +(deftype-method translate-type-spec flags (type-spec) + (let ((args (cdr (type-expand-to 'flags type-spec)))) + (if (integerp (first args)) + (translate-type-spec `(unsigned ,(first args))) + (translate-type-spec 'unsigned)))) + +(deftype-method size-of flags (type-spec) + (let ((args (cdr (type-expand-to 'flags type-spec)))) + (if (integerp (first args)) + (size-of `(unsigned ,(first args))) + (size-of 'unsigned)))) + +(deftype-method translate-to-alien flags (type-spec expr &optional weak-ref) + (declare (ignore weak-ref)) + (destructuring-bind (name &rest args) (type-expand-to 'flags type-spec) + (declare (ignore name)) + (let ((mappings (%map-mappings args :flags-int)) + (value (make-symbol "VALUE"))) + `(let ((,value 0)) + (dolist (flag ,expr ,value) + (setq ,value (logior ,value (second (assoc flag ',mappings))))))))) + +(deftype-method translate-from-alien flags (type-spec expr &optional weak-ref) + (declare (ignore weak-ref)) + (destructuring-bind (name &rest args) (type-expand-to 'flags type-spec) + (declare (ignore name)) + (let ((mappings (%map-mappings args :int-flags)) + (result (make-symbol "RESULT"))) + `(let ((,result nil)) + (dolist (mapping ',mappings ,result) + (unless (zerop (logand ,expr (first mapping))) + (push (second mapping) ,result))))))) + +(setf (alien-type-name 'flags) "GFlags") + + +(eval-when (:compile-toplevel :load-toplevel :execute) + (defclass %flags-value (alien-structure) + ((value :allocation :alien :type unsigned-int) + (name :allocation :alien :type string) + (nickname :allocation :alien :type string)) + (:metaclass proxy-class))) + +(defbinding %flags-class-values () (glist %flags-value) + (class pointer)) + +(defun %query-flags-values (type-number) + (mapcar + #'(lambda (flags-value) + (list + (intern + (substitute + #\- #\_ (string-upcase (slot-value flags-value 'nickname))) "KEYWORD") + (slot-value flags-value 'value))) + (%flags-class-values (type-class-peek type-number)))) + +(defun define-flags-by-query (init-fname &optional name) + (let ((type-number (type-init nil init-fname))) + (unless (= (type-parent type-number) (find-type-number 'flags)) + (error "~A is not a flags type" (alien-type-name type-number))) + + (type-class-ref type-number) + (setf (find-type-number name) type-number) + (let ((expanded (cons 'flags (%query-flags-values type-number))) + (name (or name (default-type-name (alien-type-name type-number))))) + (lisp::%deftype + name + #'(lambda (whole) + (unless (zerop (length (cdr whole))) + (lisp::do-arg-count-error 'deftype name (cdr whole) nil 0 0)) + expanded))))) diff --git a/glib/proxy.lisp b/glib/proxy.lisp new file mode 100644 index 0000000..f4c5a59 --- /dev/null +++ b/glib/proxy.lisp @@ -0,0 +1,422 @@ +;; Common Lisp bindings for GTK+ v2.0 +;; Copyright (C) 2000 Espen S. Johnsen +;; +;; This library is free software; you can redistribute it and/or +;; modify it under the terms of the GNU Lesser General Public +;; License as published by the Free Software Foundation; either +;; version 2 of the License, or (at your option) any later version. +;; +;; This library is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +;; Lesser General Public License for more details. +;; +;; You should have received a copy of the GNU Lesser General Public +;; License along with this library; if not, write to the Free Software +;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +;; $Id: proxy.lisp,v 1.1 2001-04-29 20:19:25 espen Exp $ + +(in-package "GLIB") + + +;;;; Superclass for all metaclasses implementing some sort of virtual slots + +(eval-when (:compile-toplevel :load-toplevel :execute) + (defclass virtual-class (pcl::standard-class)) + + (defclass direct-virtual-slot-definition (standard-direct-slot-definition) + ((location + :reader slot-definition-location + :initarg :location))) + + (defclass effective-virtual-slot-definition + (standard-effective-slot-definition))) + + +(defmethod direct-slot-definition-class ((class virtual-class) initargs) + (if (eq (getf initargs :allocation) :virtual) + (find-class 'direct-virtual-slot-definition) + (call-next-method))) + + +(defmethod effective-slot-definition-class ((class virtual-class) initargs) + (if (eq (getf initargs :allocation) :virtual) + (find-class 'effective-virtual-slot-definition) + (call-next-method))) + + +(defun %direct-slot-definitions-slot-value (slotds slot &optional default) + (let ((slotd + (find-if + #'(lambda (slotd) + (and + (slot-exists-p slotd slot) + (slot-boundp slotd slot))) + slotds))) + (if slotd + (slot-value slotd slot) + default))) + + +(defgeneric compute-virtual-slot-location (class slotd direct-slotds)) + +(defmethod compute-virtual-slot-location + ((class virtual-class) + (slotd effective-virtual-slot-definition) + direct-slotds) + (let ((location + (%direct-slot-definitions-slot-value direct-slotds 'location))) + (if (and location (symbolp location)) + (list location `(setf ,location)) + location))) + + +(defmethod compute-effective-slot-definition + ((class virtual-class) direct-slotds) + (let ((slotd (call-next-method))) + (when (typep slotd 'effective-virtual-slot-definition) + (setf + (slot-value slotd 'pcl::location) + (compute-virtual-slot-location class slotd direct-slotds))) + slotd)) + + +(defmethod slot-value-using-class + ((class virtual-class) (object standard-object) + (slotd effective-virtual-slot-definition)) + (let ((reader (first (slot-definition-location slotd)))) + (if reader + (funcall reader object) + (slot-unbound class object (slot-definition-name slotd))))) + + +(defmethod slot-boundp-using-class + ((class virtual-class) (object standard-object) + (slotd effective-virtual-slot-definition)) + (and (first (slot-definition-location slotd)) t)) + + + +(defmethod (setf slot-value-using-class) + (value (class virtual-class) (object standard-object) + (slotd effective-virtual-slot-definition)) + (let ((writer (second (slot-definition-location slotd)))) + (cond + ((null writer) + (error + "Can't set read-only slot ~A in ~A" + (slot-definition-name slotd) + object)) + ((or (functionp writer) (symbolp writer)) + (funcall writer value object) + value) + (t + (funcall (fdefinition writer) value object) + value)))) + + +(defmethod validate-superclass + ((class virtual-class) (super pcl::standard-class)) + t) + + +;;;; Proxy cache + +(internal *instance-cache*) +(defvar *instance-cache* (make-hash-table :test #'eql)) + +(defun cache-instance (instance) + (setf + (gethash (system:sap-int (proxy-location instance)) *instance-cache*) + (ext:make-weak-pointer instance))) + +(defun find-cached-instance (location) + (let ((ref (gethash (system:sap-int location) *instance-cache*))) + (when ref + (ext:weak-pointer-value ref)))) + +(defun remove-cached-instance (location) + (remhash (system:sap-int location) *instance-cache*)) + + + +;;;; Proxy for alien instances + +(eval-when (:compile-toplevel :load-toplevel :execute) + (defclass proxy () + ((location + :reader proxy-location + :type system-area-pointer))) + + (defgeneric initialize-proxy (object &rest initargs)) + (defgeneric instance-finalizer (object))) + + +(defmethod initialize-instance :after ((instance proxy) + &rest initargs &key) + (declare (ignore initargs)) + (cache-instance instance) + (ext:finalize instance (instance-finalizer instance))) + + +(defmethod initialize-proxy ((instance proxy) + &rest initargs) + (declare (ignore initargs)) + (cache-instance instance)) + + +(defmethod instance-finalizer ((instance proxy)) + (let ((location (proxy-location instance))) + #'(lambda () + (remove-cached-instance location)))) + + +(deftype-method translate-type-spec proxy (type-spec) + (declare (ignore type-spec)) + (translate-type-spec 'pointer)) + +(deftype-method size-of proxy (type-spec) + (declare (ignore type-spec)) + (size-of 'pointer)) + +(deftype-method translate-from-alien + proxy (type-spec location &optional weak-ref) + `(let ((location ,location)) + (unless (null-pointer-p location) + (ensure-proxy-instance ',type-spec location ,weak-ref)))) + + + +;;;; Metaclass used for subclasses of proxy + +(eval-when (:compile-toplevel :load-toplevel :execute) + (defclass proxy-class (virtual-class) + ((size :reader proxy-class-instance-size))) + + (defclass direct-alien-slot-definition (direct-virtual-slot-definition) + ((allocation + :initform :alien) + (offset + :reader slot-definition-offset + :initarg :offset + :initform 0))) + + (defclass effective-alien-slot-definition (effective-virtual-slot-definition) + ((offset :reader slot-definition-offset))) + + (defclass effective-virtual-alien-slot-definition + (effective-virtual-slot-definition)) + + + (defmethod most-specific-proxy-superclass ((class proxy-class)) + (find-if + #'(lambda (class) + (subtypep (class-name class) 'proxy)) + (cdr (pcl::compute-class-precedence-list class)))) + + + (defmethod shared-initialize ((class proxy-class) names + &rest initargs &key size name) + (declare (ignore initargs)) + (call-next-method) + (when size + (setf (slot-value class 'size) (first size)))) + + + (defmethod shared-initialize :after ((class proxy-class) names + &rest initargs &key) + (declare (ignore initargs names)) + (let* ((super (most-specific-proxy-superclass class)) + (actual-size + (if (eq (class-name super) 'proxy) + 0 + (proxy-class-instance-size super)))) + (dolist (slotd (class-slots class)) + (when (eq (slot-definition-allocation slotd) :alien) + (with-slots (offset type) slotd + (setq actual-size (max actual-size (+ offset (size-of type))))))) + (cond + ((not (slot-boundp class 'size)) + (setf (slot-value class 'size) actual-size)) + ((> actual-size (slot-value class 'size)) + (warn "The actual size of class ~A is lager than specified" class))))) + + + (defmethod direct-slot-definition-class ((class proxy-class) initargs) + (case (getf initargs :allocation) + ((nil :alien) (find-class 'direct-alien-slot-definition)) +; (:instance (error "Allocation :instance not allowed in class ~A" class)) + (t (call-next-method)))) + + + (defmethod effective-slot-definition-class ((class proxy-class) initargs) + (case (getf initargs :allocation) + (:alien (find-class 'effective-alien-slot-definition)) + (:virtual (find-class 'effective-virtual-alien-slot-definition)) + (t (call-next-method)))) + + + (defmethod compute-virtual-slot-location + ((class proxy-class) (slotd effective-alien-slot-definition) + direct-slotds) + (with-slots (offset type) slotd + (setf offset (%direct-slot-definitions-slot-value direct-slotds 'offset)) + (let ((reader (intern-reader-function type)) + (writer (intern-writer-function type)) + (destroy (intern-destroy-function type))) + (list + #'(lambda (object) + (funcall reader (proxy-location object) offset)) + #'(lambda (value object) + (let ((location (proxy-location object))) + (funcall destroy location offset) + (funcall writer value location offset))))))) + + + (defmethod compute-virtual-slot-location + ((class proxy-class) + (slotd effective-virtual-alien-slot-definition) + direct-slotds) + (let ((location (call-next-method))) + (if (or (stringp location) (consp location)) + (destructuring-bind (reader &optional writer) (mklist location) + (with-slots (type) slotd + (list + (if (stringp reader) + (let* ((alien-type (translate-type-spec type)) + (alien + (alien::%heap-alien + (alien::make-heap-alien-info + :type (alien::parse-alien-type + `(function ,alien-type system-area-pointer)) + :sap-form (system:foreign-symbol-address reader)))) + (translate-return-value + (intern-return-value-translator type))) + #'(lambda (object) + (funcall + translate-return-value + (alien-funcall + alien (proxy-location object))))) + reader) + (if (stringp writer) + (let* ((alien-type (translate-type-spec type)) + (alien + (alien::%heap-alien + (alien::make-heap-alien-info + :type (alien::parse-alien-type + `(function + void system-area-pointer ,alien-type)) + :sap-form (system:foreign-symbol-address writer)))) + (translate-argument (intern-argument-translator type)) + (cleanup (intern-cleanup-function type))) + #'(lambda (value object) + (let ((tmp (funcall translate-argument value)) + (location (proxy-location object))) + (alien-funcall alien location tmp) + (funcall cleanup tmp)))) + writer)))) + location))) + + + (defmethod compute-slots ((class proxy-class)) + ;; Translating the user supplied relative (to previous slot) offsets + ;; to absolute offsets. + ;; This code is broken and have to be fixed. + (with-slots (direct-slots) class + (let* ((super (most-specific-proxy-superclass class)) + (slot-offset + (if (eq (class-name super) 'proxy) + 0 + (proxy-class-instance-size super)))) + (dolist (slotd direct-slots) + (when (eq (slot-definition-allocation slotd) :alien) + (with-slots (offset type) slotd + (setf + offset (+ slot-offset offset) + slot-offset (+ offset (size-of type))))))) + + ;; Reverse the direct slot definitions so the effective slots + ;; will be in correct order. + (setf direct-slots (reverse direct-slots)) + ;; This nreverse caused me so much frustration that I leave it + ;; here just as a reminder of what not to do. +; (setf direct-slots (nreverse direct-slots)) + ) + (call-next-method)) + + + (defmethod validate-superclass ((class proxy-class) + (super pcl::standard-class)) + (subtypep (class-name super) 'proxy)) + + (defgeneric make-proxy-instance (class location weak-ref &rest initargs &key))) + + +(defmethod make-proxy-instance ((class symbol) location weak-ref + &rest initargs &key) + (apply #'make-proxy-instance (find-class class) location weak-ref initargs)) + +(defmethod make-proxy-instance ((class proxy-class) location weak-ref + &rest initargs &key) + (let ((instance (allocate-instance class))) + (apply + #'initialize-proxy + instance :location location :weak-ref weak-ref initargs) + instance)) + +(defun ensure-proxy-instance (class location weak-ref &rest initargs) + (or + (find-cached-instance location) + (apply #'make-proxy-instance class location weak-ref initargs))) + + +;;;; Superclass for wrapping of C structures + +(eval-when (:compile-toplevel :load-toplevel :execute) + (defclass alien-structure (proxy) + () + (:metaclass proxy-class) + (:size 0))) + + +(defmethod initialize-instance ((structure alien-structure) + &rest initargs) + (declare (ignore initargs)) + (setf + (slot-value structure 'location) + (allocate-memory (proxy-class-instance-size (class-of structure)))) + (call-next-method)) + + +(defmethod initialize-proxy ((structure alien-structure) + &rest initargs &key location weak-ref) + (declare (ignore initargs)) + (setf + (slot-value structure 'location) + (if weak-ref + (copy-memory location (proxy-class-instance-size (class-of structure))) + location)) + (call-next-method)) + + +(defmethod instance-finalizer ((structure alien-structure)) + (let ((location (proxy-location structure))) + (declare (type system-area-pointer location)) + #'(lambda () + (deallocate-memory location) + (remove-cached-instance location)))) + + +(deftype-method translate-to-alien + alien-structure (type-spec object &optional weak-ref) + (if weak-ref + `(proxy-location ,object) + `(copy-memory + (proxy-location ,object) + ,(proxy-class-instance-size (find-class type-spec))))) + + +(deftype-method unreference-alien alien-structure (type-spec c-struct) + (declare (ignore type-spec)) + `(deallocate-memory ,c-struct)) -- [mdw]