| 1 | ;; Common Lisp bindings for GTK+ v2.0 |
| 2 | ;; Copyright (C) 2000-2001 Espen S. Johnsen <esj@stud.cs.uit.no> |
| 3 | ;; |
| 4 | ;; This library is free software; you can redistribute it and/or |
| 5 | ;; modify it under the terms of the GNU Lesser General Public |
| 6 | ;; License as published by the Free Software Foundation; either |
| 7 | ;; version 2 of the License, or (at your option) any later version. |
| 8 | ;; |
| 9 | ;; This library is distributed in the hope that it will be useful, |
| 10 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | ;; Lesser General Public License for more details. |
| 13 | ;; |
| 14 | ;; You should have received a copy of the GNU Lesser General Public |
| 15 | ;; License along with this library; if not, write to the Free Software |
| 16 | ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 17 | |
| 18 | ;; $Id: gtype.lisp,v 1.21 2004/11/19 13:02:51 espen Exp $ |
| 19 | |
| 20 | (in-package "GLIB") |
| 21 | |
| 22 | (use-prefix "g") |
| 23 | |
| 24 | ;; Initialize the glib type system |
| 25 | (defbinding type-init () nil) |
| 26 | (type-init) |
| 27 | |
| 28 | (deftype type-number () '(unsigned 32)) |
| 29 | |
| 30 | (deftype gtype () 'symbol) |
| 31 | |
| 32 | (defmethod alien-type ((type (eql 'gtype)) &rest args) |
| 33 | (declare (ignore type args)) |
| 34 | (alien-type 'type-number)) |
| 35 | |
| 36 | (defmethod size-of ((type (eql 'gtype)) &rest args) |
| 37 | (declare (ignore type args)) |
| 38 | (size-of 'type-number)) |
| 39 | |
| 40 | (defmethod to-alien-form (gtype (type (eql 'gtype)) &rest args) |
| 41 | (declare (ignore type args)) |
| 42 | `(find-type-number ,gtype t)) |
| 43 | |
| 44 | (defmethod to-alien-function ((type (eql 'gtype)) &rest args) |
| 45 | (declare (ignore type args)) |
| 46 | #'(lambda (gtype) |
| 47 | (find-type-number gtype t))) |
| 48 | |
| 49 | (defmethod from-alien-form (type-number (type (eql 'gtype)) &rest args) |
| 50 | (declare (ignore type args)) |
| 51 | `(type-from-number ,type-number t)) |
| 52 | |
| 53 | (defmethod from-alien-function ((type (eql 'gtype)) &rest args) |
| 54 | (declare (ignore type args)) |
| 55 | #'(lambda (type-number) |
| 56 | (type-from-number type-number t))) |
| 57 | |
| 58 | (defmethod writer-function ((type (eql 'gtype)) &rest args) |
| 59 | (declare (ignore type)) |
| 60 | (let ((writer (writer-function 'type-number))) |
| 61 | #'(lambda (gtype location &optional (offset 0)) |
| 62 | (funcall writer (find-type-number gtype t) location offset)))) |
| 63 | |
| 64 | (defmethod reader-function ((type (eql 'gtype)) &rest args) |
| 65 | (declare (ignore type)) |
| 66 | (let ((reader (reader-function 'type-number))) |
| 67 | #'(lambda (location &optional (offset 0)) |
| 68 | (type-from-number (funcall reader location offset) t)))) |
| 69 | |
| 70 | |
| 71 | (eval-when (:compile-toplevel :load-toplevel :execute) |
| 72 | (defclass type-query (struct) |
| 73 | ((type-number :allocation :alien :type type-number) |
| 74 | (name :allocation :alien :type string) |
| 75 | (class-size :allocation :alien :type unsigned-int) |
| 76 | (instance-size :allocation :alien :type unsigned-int)) |
| 77 | (:metaclass struct-class))) |
| 78 | |
| 79 | |
| 80 | (defbinding type-query (type) nil |
| 81 | ((find-type-number type t) type-number) |
| 82 | ((make-instance 'type-query) type-query :return)) |
| 83 | |
| 84 | (defun type-instance-size (type) |
| 85 | (slot-value (type-query type) 'instance-size)) |
| 86 | |
| 87 | (defun type-class-size (type) |
| 88 | (slot-value (type-query type) 'class-size)) |
| 89 | |
| 90 | (defbinding type-class-ref (type) pointer |
| 91 | ((find-type-number type t) type-number)) |
| 92 | |
| 93 | (defbinding type-class-unref (type) nil |
| 94 | ((find-type-number type t) type-number)) |
| 95 | |
| 96 | (defbinding type-class-peek (type) pointer |
| 97 | ((find-type-number type t) type-number)) |
| 98 | |
| 99 | |
| 100 | ;;;; Mapping between lisp types and glib types |
| 101 | |
| 102 | (defvar *type-to-number-hash* (make-hash-table)) |
| 103 | (defvar *number-to-type-hash* (make-hash-table)) |
| 104 | |
| 105 | (defun register-type (type id) |
| 106 | (let ((type-number |
| 107 | (etypecase id |
| 108 | (integer id) |
| 109 | (string (find-type-number id t)) |
| 110 | (symbol (gethash id *type-to-number-hash*))))) |
| 111 | (setf (gethash type *type-to-number-hash*) type-number) |
| 112 | (unless (symbolp id) |
| 113 | (setf (gethash type-number *number-to-type-hash*) type)) |
| 114 | type-number)) |
| 115 | |
| 116 | (defbinding %type-from-name () type-number |
| 117 | (name string)) |
| 118 | |
| 119 | (defun find-type-number (type &optional error) |
| 120 | (etypecase type |
| 121 | (integer type) |
| 122 | (string |
| 123 | (let ((type-number (%type-from-name type))) |
| 124 | (cond |
| 125 | ((and (zerop type-number) error) |
| 126 | (error "Invalid gtype name: ~A" type)) |
| 127 | ((zerop type-number) nil) |
| 128 | (t type-number)))) |
| 129 | (symbol |
| 130 | (let ((type-number (gethash type *type-to-number-hash*))) |
| 131 | (or |
| 132 | type-number |
| 133 | (and error (error "Type not registered: ~A" type))))) |
| 134 | (pcl::class (find-type-number (class-name type) error)))) |
| 135 | |
| 136 | (defun type-from-number (type-number &optional error) |
| 137 | (multiple-value-bind (type found) |
| 138 | (gethash type-number *number-to-type-hash*) |
| 139 | (when (and error (not found)) |
| 140 | (let ((name (find-type-name type-number))) |
| 141 | (if name |
| 142 | (error "Type number not registered: ~A (~A)" type-number name) |
| 143 | (error "Invalid type number: ~A" type-number)))) |
| 144 | type)) |
| 145 | |
| 146 | (defun type-from-name (name) |
| 147 | (etypecase name |
| 148 | (string (type-from-number (find-type-number name t))))) |
| 149 | |
| 150 | (defbinding (find-type-name "g_type_name") (type) (copy-of string) |
| 151 | ((find-type-number type t) type-number)) |
| 152 | |
| 153 | (defun type-number-of (object) |
| 154 | (find-type-number (type-of object) t)) |
| 155 | |
| 156 | (defun init-type (init) |
| 157 | (mapc |
| 158 | #'(lambda (fname) |
| 159 | (funcall (mkbinding fname 'type-number))) |
| 160 | (mklist init))) |
| 161 | |
| 162 | (defun %init-types-in-library (pathname prefix ignore) |
| 163 | (let ((process (ext:run-program |
| 164 | "nm" (list "-D" (namestring (truename pathname))) |
| 165 | :output :stream :wait nil)) |
| 166 | (fnames ())) |
| 167 | (labels ((read-symbols () |
| 168 | (let ((line (read-line (ext:process-output process) nil))) |
| 169 | (when line |
| 170 | (let ((symbol (subseq line 11))) |
| 171 | (when (and |
| 172 | (> (length symbol) (length prefix)) |
| 173 | (string= prefix symbol :end2 (length prefix)) |
| 174 | (search "_get_type" symbol) |
| 175 | (not (member symbol ignore :test #'string=))) |
| 176 | (push symbol fnames))) |
| 177 | (read-symbols))))) |
| 178 | (read-symbols) |
| 179 | (ext:process-close process) |
| 180 | `(init-type ',fnames)))) |
| 181 | |
| 182 | (defmacro init-types-in-library (filename &key (prefix "") ignore) |
| 183 | (%init-types-in-library filename prefix ignore)) |
| 184 | |
| 185 | |
| 186 | |
| 187 | ;;;; Superclass for wrapping types in the glib type system |
| 188 | |
| 189 | (eval-when (:compile-toplevel :load-toplevel :execute) |
| 190 | (defclass ginstance (proxy) |
| 191 | ((class :allocation :alien :type pointer)) |
| 192 | (:metaclass proxy-class))) |
| 193 | |
| 194 | (defun %type-of-ginstance (location) |
| 195 | (let ((class (sap-ref-sap location 0))) |
| 196 | (type-from-number (sap-ref-32 class 0)))) |
| 197 | |
| 198 | (defmethod ensure-proxy-instance ((class ginstance-class) location) |
| 199 | (declare (ignore class)) |
| 200 | (let ((class (find-class (%type-of-ginstance location)))) |
| 201 | (if class |
| 202 | (make-instance class :location (reference-foreign class location)) |
| 203 | ;; TODO: (make-instance 'ginstance ...) |
| 204 | location))) |
| 205 | |
| 206 | (defmethod copy-from-alien-form (location (class ginstance-class) &rest args) |
| 207 | (declare (ignore location class args)) |
| 208 | (error "Doing copy-from-alien on a ref. counted class is most certainly an error, but if it really is what you want you should use REFERENCE-FOREIGN on the returned instance instead.")) |
| 209 | |
| 210 | (defmethod copy-from-alien-function ((class ginstance-class) &rest args) |
| 211 | (declare (ignore class args)) |
| 212 | (error "Doing copy-from-alien on a ref. counted class is most certainly an error, but if it really is what you want you should use REFERENCE-FOREIGN on the returned instance instead.")) |
| 213 | |
| 214 | (defmethod reader-function ((class ginstance-class) &rest args) |
| 215 | (declare (ignore args)) |
| 216 | #'(lambda (location &optional (offset 0)) |
| 217 | (ensure-proxy-instance class (sap-ref-sap location offset)))) |
| 218 | |
| 219 | |
| 220 | ;;;; Metaclass for subclasses of ginstance |
| 221 | |
| 222 | (eval-when (:compile-toplevel :load-toplevel :execute) |
| 223 | (defclass ginstance-class (proxy-class) |
| 224 | ())) |
| 225 | |
| 226 | |
| 227 | (defmethod shared-initialize ((class ginstance-class) names |
| 228 | &rest initargs &key name alien-name) |
| 229 | (declare (ignore names)) |
| 230 | (let* ((class-name (or name (class-name class))) |
| 231 | (type-number |
| 232 | (find-type-number |
| 233 | (or (first alien-name) (default-alien-type-name class-name)) t))) |
| 234 | (register-type class-name type-number) |
| 235 | (if (getf initargs :size) |
| 236 | (call-next-method) |
| 237 | (let ((size (type-instance-size type-number))) |
| 238 | (apply #'call-next-method class names :size (list size) initargs))))) |
| 239 | |
| 240 | |
| 241 | (defmethod validate-superclass ((class ginstance-class) (super standard-class)) |
| 242 | (subtypep (class-name super) 'ginstance)) |
| 243 | |
| 244 | |
| 245 | ;;;; Registering fundamental types |
| 246 | |
| 247 | (register-type 'pointer "gpointer") |
| 248 | (register-type 'char "gchar") |
| 249 | (register-type 'unsigned-char "guchar") |
| 250 | (register-type 'boolean "gboolean") |
| 251 | (register-type 'fixnum "gint") |
| 252 | (register-type 'int "gint") |
| 253 | (register-type 'unsigned-int "guint") |
| 254 | (register-type 'long "glong") |
| 255 | (register-type 'unsigned-long "gulong") |
| 256 | (register-type 'single-float "gfloat") |
| 257 | (register-type 'double-float "gdouble") |
| 258 | (register-type 'string "gchararray") |
| 259 | |
| 260 | |
| 261 | ;;;; |
| 262 | |
| 263 | (defvar *derivable-type-info* (make-hash-table)) |
| 264 | |
| 265 | (defun register-derivable-type (type id expander) |
| 266 | (register-type type id) |
| 267 | (let ((type-number (register-type type id))) |
| 268 | (setf (gethash type-number *derivable-type-info*) expander))) |
| 269 | |
| 270 | (defun find-type-info (type) |
| 271 | (dolist (super (cdr (type-hierarchy type))) |
| 272 | (let ((info (gethash super *derivable-type-info*))) |
| 273 | (return-if info)))) |
| 274 | |
| 275 | (defun expand-type-definition (type options) |
| 276 | (let ((expander (find-type-info type))) |
| 277 | (funcall expander (find-type-number type t) options))) |
| 278 | |
| 279 | (defbinding type-parent (type) type-number |
| 280 | ((find-type-number type t) type-number)) |
| 281 | |
| 282 | (defun supertype (type) |
| 283 | (type-from-number (type-parent type))) |
| 284 | |
| 285 | (defbinding %type-interfaces (type) pointer |
| 286 | ((find-type-number type t) type-number) |
| 287 | (n-interfaces unsigned-int :out)) |
| 288 | |
| 289 | (defun type-interfaces (type) |
| 290 | (multiple-value-bind (array length) (%type-interfaces type) |
| 291 | (unwind-protect |
| 292 | (map-c-vector 'list #'identity array 'type-number length) |
| 293 | (deallocate-memory array)))) |
| 294 | |
| 295 | (defun implements (type) |
| 296 | (mapcar #'type-from-number (type-interfaces type))) |
| 297 | |
| 298 | (defun type-hierarchy (type) |
| 299 | (let ((type-number (find-type-number type t))) |
| 300 | (unless (= type-number 0) |
| 301 | (cons type-number (type-hierarchy (type-parent type-number)))))) |
| 302 | |
| 303 | (defbinding (type-is-p "g_type_is_a") (type super) boolean |
| 304 | ((find-type-number type) type-number) |
| 305 | ((find-type-number super) type-number)) |
| 306 | |
| 307 | (defbinding %type-children () pointer |
| 308 | (type-number type-number) |
| 309 | (num-children unsigned-int :out)) |
| 310 | |
| 311 | (defun map-subtypes (function type &optional prefix) |
| 312 | (let ((type-number (find-type-number type t))) |
| 313 | (multiple-value-bind (array length) (%type-children type-number) |
| 314 | (unwind-protect |
| 315 | (map-c-vector |
| 316 | 'nil |
| 317 | #'(lambda (type-number) |
| 318 | (when (or |
| 319 | (not prefix) |
| 320 | (string-prefix-p prefix (find-type-name type-number))) |
| 321 | (funcall function type-number)) |
| 322 | (map-subtypes function type-number prefix)) |
| 323 | array 'type-number length) |
| 324 | (deallocate-memory array))))) |
| 325 | |
| 326 | (defun find-types (prefix) |
| 327 | (let ((type-list nil)) |
| 328 | (maphash |
| 329 | #'(lambda (type-number expander) |
| 330 | (declare (ignore expander)) |
| 331 | (map-subtypes |
| 332 | #'(lambda (type-number) |
| 333 | (pushnew type-number type-list)) |
| 334 | type-number prefix)) |
| 335 | *derivable-type-info*) |
| 336 | type-list)) |
| 337 | |
| 338 | (defun %sort-types-topologicaly (unsorted) |
| 339 | (let ((sorted ())) |
| 340 | (loop while unsorted do |
| 341 | (dolist (type unsorted) |
| 342 | (let ((dependencies |
| 343 | (append (rest (type-hierarchy type)) (type-interfaces type)))) |
| 344 | (cond |
| 345 | ((null dependencies) |
| 346 | (push type sorted) |
| 347 | (setq unsorted (delete type unsorted))) |
| 348 | (t |
| 349 | (unless (dolist (dep dependencies) |
| 350 | (when (find type (rest (type-hierarchy dep))) |
| 351 | (error "Cyclic type dependencie")) |
| 352 | (return-if (find dep unsorted))) |
| 353 | (push type sorted) |
| 354 | (setq unsorted (delete type unsorted)))))))) |
| 355 | (nreverse sorted))) |
| 356 | |
| 357 | |
| 358 | (defun expand-type-definitions (prefix &optional args) |
| 359 | (flet ((type-options (type-number) |
| 360 | (let ((name (find-type-name type-number))) |
| 361 | (cdr (assoc name args :test #'string=))))) |
| 362 | |
| 363 | (let ((type-list |
| 364 | (delete-if |
| 365 | #'(lambda (type-number) |
| 366 | (let ((name (find-type-name type-number))) |
| 367 | (or |
| 368 | (getf (type-options type-number) :ignore) |
| 369 | (find-if |
| 370 | #'(lambda (options) |
| 371 | (and |
| 372 | (string-prefix-p (first options) name) |
| 373 | (getf (cdr options) :ignore-prefix) |
| 374 | (not (some |
| 375 | #'(lambda (exception) |
| 376 | (string= name exception)) |
| 377 | (getf (cdr options) :except))))) |
| 378 | args)))) |
| 379 | (find-types prefix)))) |
| 380 | |
| 381 | (dolist (type-number type-list) |
| 382 | (let ((name (find-type-name type-number))) |
| 383 | (register-type |
| 384 | (getf (type-options type-number) :type (default-type-name name)) |
| 385 | type-number))) |
| 386 | |
| 387 | `(progn |
| 388 | ,@(mapcar |
| 389 | #'(lambda (type) |
| 390 | (expand-type-definition type (type-options type))) |
| 391 | (%sort-types-topologicaly type-list)))))) |
| 392 | |
| 393 | (defmacro define-types-by-introspection (prefix &rest args) |
| 394 | (expand-type-definitions prefix args)) |
| 395 | |
| 396 | |
| 397 | |