| 1 | ;; Common Lisp bindings for GTK+ v2.x |
| 2 | ;; Copyright 2004-2005 Espen S. Johnsen <espen@users.sf.net> |
| 3 | ;; |
| 4 | ;; Permission is hereby granted, free of charge, to any person obtaining |
| 5 | ;; a copy of this software and associated documentation files (the |
| 6 | ;; "Software"), to deal in the Software without restriction, including |
| 7 | ;; without limitation the rights to use, copy, modify, merge, publish, |
| 8 | ;; distribute, sublicense, and/or sell copies of the Software, and to |
| 9 | ;; permit persons to whom the Software is furnished to do so, subject to |
| 10 | ;; the following conditions: |
| 11 | ;; |
| 12 | ;; The above copyright notice and this permission notice shall be |
| 13 | ;; included in all copies or substantial portions of the Software. |
| 14 | ;; |
| 15 | ;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 16 | ;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 17 | ;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 18 | ;; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 19 | ;; CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 20 | ;; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 21 | ;; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 22 | |
| 23 | ;; $Id: pixbuf.lisp,v 1.9 2008-12-10 03:01:34 espen Exp $ |
| 24 | |
| 25 | |
| 26 | (in-package "GDK") |
| 27 | |
| 28 | (defbinding %pixbuf-new () pointer |
| 29 | colorspace |
| 30 | (has-alpha boolean) |
| 31 | (bits-per-sample int) |
| 32 | (width int) |
| 33 | (height int)) |
| 34 | |
| 35 | (defbinding %pixbuf-new-from-data () pointer |
| 36 | (data pointer) |
| 37 | colorspace |
| 38 | (has-alpha boolean) |
| 39 | (bits-per-sample int) |
| 40 | (width int) |
| 41 | (height int) |
| 42 | (rowstride int) |
| 43 | (nil null) |
| 44 | (nil null)) |
| 45 | |
| 46 | (defbinding %pixbuf-new-from-xpm-data () pointer |
| 47 | (data (vector string))) |
| 48 | |
| 49 | (defbinding %pixbuf-new-from-file () pointer |
| 50 | (filename pathname) |
| 51 | (nil (or null gerror) :out)) |
| 52 | |
| 53 | (defbinding %pixbuf-new-from-file-at-size () pointer |
| 54 | (filename pathname) |
| 55 | (width int) |
| 56 | (height int) |
| 57 | (nil (or null gerror) :out)) |
| 58 | |
| 59 | #?(pkg-exists-p "gtk+-2.0" :atleast-version "2.6.0") |
| 60 | (defbinding %pixbuf-new-from-file-at-scale () pointer |
| 61 | (filename pathname) |
| 62 | (width int) |
| 63 | (height int) |
| 64 | (preserve-aspect-ratio boolean) |
| 65 | (nil (or null gerror) :out)) |
| 66 | |
| 67 | (defun %pixbuf-load (filename width height preserve-aspect-p) |
| 68 | (multiple-value-bind (location gerror) |
| 69 | (cond |
| 70 | ((and width height) |
| 71 | (%pixbuf-new-from-file-at-size filename width height)) |
| 72 | ((or width height) |
| 73 | #?-(pkg-exists-p "gtk+-2.0" :atleast-version "2.6.0") |
| 74 | (error "Both :width and :height must be specified") |
| 75 | #?(pkg-exists-p "gtk+-2.0" :atleast-version "2.6.0") |
| 76 | (%pixbuf-new-from-file-at-scale filename |
| 77 | (or width -1) (or height -1) preserve-aspect-p)) |
| 78 | (t (%pixbuf-new-from-file filename))) |
| 79 | (if gerror |
| 80 | (signal-gerror gerror) |
| 81 | location))) |
| 82 | |
| 83 | #?(pkg-exists-p "gtk+-2.0" :atleast-version "2.14.0") |
| 84 | (progn |
| 85 | (defbinding %pixbuf-new-from-stream () pointer |
| 86 | gio:input-stream-designator |
| 87 | (nil (or null gio:cancellable)) |
| 88 | (nil (or null gerror) :out)) |
| 89 | |
| 90 | (defbinding %pixbuf-new-from-stream-at-scale () pointer |
| 91 | gio:input-stream-designator |
| 92 | (width int) |
| 93 | (height int) |
| 94 | (preserve-aspect-ratio boolean) |
| 95 | (nil (or null gio:cancellable)) |
| 96 | (nil (or null gerror) :out)) |
| 97 | |
| 98 | (defun %load-from-stream (stream width height preserve-aspect-p) |
| 99 | (multiple-value-bind (location gerror) |
| 100 | (cond |
| 101 | ((or width height) |
| 102 | (%pixbuf-new-from-stream-at-scale stream |
| 103 | (or width -1) (or height -1) preserve-aspect-p)) |
| 104 | (t (%pixbuf-new-from-stream stream))) |
| 105 | (if gerror |
| 106 | (signal-gerror gerror) |
| 107 | location)))) |
| 108 | |
| 109 | (defmethod allocate-foreign ((pixbuf pixbuf) &key source (bits-per-sample 8) |
| 110 | (colorspace :rgb) (has-alpha t) width height |
| 111 | (preserve-aspect-ratio t) destroy stride) |
| 112 | (cond |
| 113 | ((not source) |
| 114 | (%pixbuf-new colorspace has-alpha bits-per-sample width height)) |
| 115 | ((typep source 'pointer) |
| 116 | ;; TODO: destory |
| 117 | (%pixbuf-new-from-data source colorspace has-alpha bits-per-sample width height (or stride (* width (if has-alpha 4 3))))) |
| 118 | ((and (vectorp source) (stringp (aref source 0))) |
| 119 | (%pixbuf-new-from-xpm-data source)) |
| 120 | ((typep source 'vector) |
| 121 | |
| 122 | ) |
| 123 | ((or (pathnamep source) (stringp source)) |
| 124 | #?-(pkg-exists-p "gtk+-2.0" :atleast-version "2.6.0") |
| 125 | (unless preserve-aspect-ratio |
| 126 | (warn ":preserve-aspect-ratio not supported with this version of Gtk")) |
| 127 | (%pixbuf-load source width height preserve-aspect-ratio)) |
| 128 | #?(pkg-exists-p "gtk+-2.0" :atleast-version "2.14.0") |
| 129 | ((typep source 'gio:input-stream-designator) |
| 130 | (%load-from-stream source width height preserve-aspect-ratio)) |
| 131 | ((call-next-method)))) |
| 132 | |
| 133 | |
| 134 | (defbinding (pixbuf-subpixbuf "gdk_pixbuf_new_subpixbuf") () |
| 135 | (or null (referenced pixbuf)) |
| 136 | pixbuf (src-x int) (src-y int) (width int) (height int)) |
| 137 | |
| 138 | (defbinding pixbuf-copy () (or null (referenced pixbuf)) |
| 139 | pixbuf) |
| 140 | |
| 141 | |
| 142 | (defbinding pixbuf-get-option () (copy-of string) |
| 143 | (pixbuf pixbuf) |
| 144 | (key string)) |
| 145 | |
| 146 | (defun pixbuf-load (filename &key width height size (preserve-aspect-ratio t)) |
| 147 | (make-instance 'pixbuf :source filename |
| 148 | :width (or size width) :height (or size height) |
| 149 | :preserve-aspect-ratio preserve-aspect-ratio)) |
| 150 | |
| 151 | |
| 152 | ;; (defbinding pixbuf-get-file-info () (copy-of pixbuf-format) |
| 153 | ;; (filename pathname) |
| 154 | ;; (width int :out) |
| 155 | ;; (height int :out)) |
| 156 | |
| 157 | (defbinding %pixbuf-savev () boolean |
| 158 | (pixbuf pixbuf) |
| 159 | (filename pathname) |
| 160 | (type string) |
| 161 | (keys strings) |
| 162 | (values strings) |
| 163 | (nil (or null gerror) :out)) |
| 164 | |
| 165 | (defun %pixbuf-save-options (options) |
| 166 | (let ((keys (make-array 0 :adjustable t :fill-pointer t)) |
| 167 | (values (make-array 0 :adjustable t :fill-pointer t))) |
| 168 | (loop |
| 169 | for (key value) on options by #'cddr |
| 170 | do (vector-push-extend (string-downcase key) keys) |
| 171 | (vector-push-extend |
| 172 | (etypecase value |
| 173 | (string value) |
| 174 | (symbol (string-downcase value)) |
| 175 | (number (format nil "~A" value))) |
| 176 | values)) |
| 177 | (values keys values))) |
| 178 | |
| 179 | (defgeneric pixbuf-save (pixbuf dest type &rest options)) |
| 180 | |
| 181 | (defmethod pixbuf-save (pixbuf (filename string) type &rest options) |
| 182 | (multiple-value-bind (ok-p gerror) |
| 183 | (multiple-value-call #'%pixbuf-savev |
| 184 | pixbuf filename (string-downcase type) |
| 185 | (%pixbuf-save-options options)) |
| 186 | (unless ok-p |
| 187 | (signal-gerror gerror)))) |
| 188 | |
| 189 | (defmethod pixbuf-save (pixbuf (pathname pathname) type &rest options) |
| 190 | (apply #'pixbuf-save pixbuf (namestring (translate-logical-pathname pathname)) |
| 191 | type options)) |
| 192 | |
| 193 | (define-callback stream-write-func boolean |
| 194 | ((data pointer) (length gsize) (gerror pointer) (stream-id pointer-data)) |
| 195 | (block stream-write |
| 196 | (handler-case |
| 197 | (let ((stream (find-user-data stream-id))) |
| 198 | (write-sequence |
| 199 | (map-c-vector 'vector 'identity data '(unsigned-byte 8) length) |
| 200 | stream)) |
| 201 | (serious-condition (condition) |
| 202 | (gerror-set-in-callback gerror (file-error-domain) |
| 203 | (enum-int :failed 'file-error-enum) (princ-to-string condition)) |
| 204 | (return-from stream-write nil))) |
| 205 | t)) |
| 206 | |
| 207 | (defbinding %pixbuf-save-to-callbackv (pixbuf stream type keys values) boolean |
| 208 | (pixbuf pixbuf) |
| 209 | (stream-write-func callback) |
| 210 | (stream pointer-data) |
| 211 | (type string) |
| 212 | (keys strings) |
| 213 | (values strings) |
| 214 | (nil (or null gerror) :out)) |
| 215 | |
| 216 | (defmethod pixbuf-save (pixbuf (stream stream) type &rest options) |
| 217 | (let ((stream-id (register-user-data stream))) |
| 218 | (unwind-protect |
| 219 | (multiple-value-bind (ok-p gerror) |
| 220 | (multiple-value-call #'%pixbuf-save-to-callbackv |
| 221 | pixbuf stream-id (string-downcase type) |
| 222 | (%pixbuf-save-options options)) |
| 223 | (unless ok-p |
| 224 | (signal-gerror gerror))) |
| 225 | (destroy-user-data stream-id)))) |
| 226 | |
| 227 | |
| 228 | ;; (defbinding pixbuf-new-from-xpm-data () (referenced pixbuf) |
| 229 | ;; (data (vector string))) |
| 230 | |
| 231 | (defbinding %pixbuf-new-subpixbuf () pixbuf ;; or (referenced pixbuf)? |
| 232 | (pixbuf pixbuf) |
| 233 | (x int) (y int) (width int) (height int)) |
| 234 | |
| 235 | (defbinding %pixbuf-copy () (referenced pixbuf) |
| 236 | (pixbuf pixbuf)) |
| 237 | |
| 238 | (defun copy-pixbuf (pixbuf &optional x y width height) |
| 239 | (if (and (not x) (not y) (not width) (not height)) |
| 240 | (%pixbuf-copy pixbuf) |
| 241 | (%pixbuf-new-subpixbuf pixbuf x y width height))) |
| 242 | |
| 243 | (defbinding %pixbuf-get-from-drawable () (or null (referenced pixbuf)) |
| 244 | (dest (or null pixbuf)) |
| 245 | (drawable drawable) |
| 246 | (colormap (or null colormap)) |
| 247 | (src-x int) |
| 248 | (src-y int) |
| 249 | (dest-x int) |
| 250 | (dest-y int) |
| 251 | (width int) |
| 252 | (height int)) |
| 253 | |
| 254 | (defun pixbuf-get-from-drawable (drawable &key (src-x 0) (src-y 0) (dest-x 0) (dest-y 0) width height colormap dest) |
| 255 | (unless (or (and width height) (not (typep drawable 'window))) |
| 256 | (error "Width and height must be specified for windows")) |
| 257 | (or |
| 258 | (%pixbuf-get-from-drawable dest drawable |
| 259 | (cond |
| 260 | (colormap) |
| 261 | ((slot-boundp drawable 'colormap) nil) |
| 262 | ((colormap-get-system))) |
| 263 | src-x src-y dest-x dest-y (or width -1) (or height -1)) |
| 264 | (error "Couldn't get pixbuf from drawable"))) |
| 265 | |
| 266 | |
| 267 | ;;; Pixbuf Loader |
| 268 | |
| 269 | (defbinding %pixbuf-loader-new-with-type () pointer |
| 270 | (type string) |
| 271 | (nil gerror-signal :out)) |
| 272 | |
| 273 | (defbinding %pixbuf-loader-new-with-mime-type () pointer |
| 274 | (mime-type string) |
| 275 | (nil gerror-signal :out)) |
| 276 | |
| 277 | (defmethod allocate-foreign ((loader pixbuf-loader) &key type mime-type) |
| 278 | (cond |
| 279 | ((and type mime-type) |
| 280 | (error "Only one of the keyword arguments :TYPE and :MIME-TYPE can be specified")) |
| 281 | (type (%pixbuf-loader-new-with-type type)) |
| 282 | (mime-type (%pixbuf-loader-new-with-mime-type mime-type)) |
| 283 | ((call-next-method)))) |
| 284 | |
| 285 | (defbinding pixbuf-loader-write (loader buffer &optional (length (length buffer))) boolean |
| 286 | (loader pixbuf-loader) |
| 287 | (buffer (unboxed-vector (unsigned-byte 8))) |
| 288 | (length integer) |
| 289 | (nil gerror-signal :out)) |
| 290 | |
| 291 | (defbinding pixbuf-loader-close () boolean |
| 292 | (loader pixbuf-loader) |
| 293 | (nil gerror-signal :out)) |
| 294 | |
| 295 | (defbinding pixbuf-loader-get-pixbuf () (or null pixbuf) |
| 296 | (loader pixbuf-loader)) |
| 297 | |
| 298 | (defbinding pixbuf-loader-get-animation () (or null pixbuf-animation) |
| 299 | (loader pixbuf-loader)) |
| 300 | |
| 301 | (defbinding pixbuf-loader-set-size () nil |
| 302 | (loader pixbuf-loader) |
| 303 | (width integer) |
| 304 | (height integer)) |
| 305 | |
| 306 | |
| 307 | ;;; Utilities |
| 308 | |
| 309 | (defbinding pixbuf-add-alpha |
| 310 | (pixbuf &optional substitute-color (red 255) (green 255) (blue 255)) |
| 311 | (referenced pixbuf) |
| 312 | (pixbuf pixbuf) |
| 313 | (substitute-color boolean) |
| 314 | (red (unsigned 8)) |
| 315 | (green (unsigned 8)) |
| 316 | (blue (unsigned 8))) |
| 317 | |
| 318 | ;; The purpose of this function is to be able to share pixel data |
| 319 | ;; between GdkPixbufs and Cairo image surfaces. |
| 320 | #+nil |
| 321 | (defun pixbuf-swap-rgb (pixbuf) |
| 322 | (assert (= (pixbuf-bits-per-sample pixbuf) 8)) |
| 323 | (assert (= (pixbuf-n-channels pixbuf) 4)) |
| 324 | (assert (pixbuf-has-alpha-p pixbuf)) |
| 325 | (let ((pixels (pixbuf-pixels pixbuf)) |
| 326 | (stride (pixbuf-rowstride pixbuf)) |
| 327 | (n-channels (pixbuf-n-channels pixbuf))) |
| 328 | (loop for y from 0 below (pixbuf-height pixbuf) do |
| 329 | (let ((row-offset (* y stride))) |
| 330 | (loop for x from 0 below (pixbuf-width pixbuf) do |
| 331 | (let* ((offset (+ row-offset (* n-channels x))) |
| 332 | (p0 (ref-uint-8 pixels offset)) |
| 333 | (p2 (ref-uint-8 pixels (+ offset 2)))) |
| 334 | (setf (ref-uint-8 pixels offset) p2) |
| 335 | (setf (ref-uint-8 pixels (+ offset 2)) p0))))))) |
| 336 | |
| 337 | (defbinding (pixbuf-swap-rgb "clg_gdk_pixbuf_swap_rgb") () nil |
| 338 | pixbuf) |