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1 | ;; Common Lisp bindings for GTK+ v2.x |
2 | ;; Copyright 2004-2005 Espen S. Johnsen <espen@users.sf.net> |
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3 | ;; |
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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: |
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11 | ;; |
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12 | ;; The above copyright notice and this permission notice shall be |
13 | ;; included in all copies or substantial portions of the Software. |
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14 | ;; |
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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 | |
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23 | ;; $Id: pixbuf.lisp,v 1.9 2008-12-10 03:01:34 espen Exp $ |
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24 | |
25 | |
26 | (in-package "GDK") |
27 | |
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28 | (defbinding %pixbuf-new () pointer |
29 | colorspace |
30 | (has-alpha boolean) |
31 | (bits-per-sample int) |
32 | (width int) |
33 | (height int)) |
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34 | |
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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 |
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50 | (filename pathname) |
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51 | (nil (or null gerror) :out)) |
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52 | |
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53 | (defbinding %pixbuf-new-from-file-at-size () pointer |
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54 | (filename pathname) |
55 | (width int) |
56 | (height int) |
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57 | (nil (or null gerror) :out)) |
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58 | |
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59 | #?(pkg-exists-p "gtk+-2.0" :atleast-version "2.6.0") |
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60 | (defbinding %pixbuf-new-from-file-at-scale () pointer |
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61 | (filename pathname) |
62 | (width int) |
63 | (height int) |
64 | (preserve-aspect-ratio boolean) |
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65 | (nil (or null gerror) :out)) |
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66 | |
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67 | (defun %pixbuf-load (filename width height preserve-aspect-p) |
68 | (multiple-value-bind (location gerror) |
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69 | (cond |
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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))) |
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79 | (if gerror |
80 | (signal-gerror gerror) |
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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)) |
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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) |
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161 | (keys strings) |
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162 | (values strings) |
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163 | (nil (or null gerror) :out)) |
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164 | |
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165 | (defun %pixbuf-save-options (options) |
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166 | (let ((keys (make-array 0 :adjustable t :fill-pointer t)) |
167 | (values (make-array 0 :adjustable t :fill-pointer t))) |
168 | (loop |
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169 | for (key value) on options by #'cddr |
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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)) |
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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)))) |
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226 | |
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227 | |
228 | ;; (defbinding pixbuf-new-from-xpm-data () (referenced pixbuf) |
229 | ;; (data (vector string))) |
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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 | |
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243 | (defbinding %pixbuf-get-from-drawable () (or null (referenced pixbuf)) |
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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 | |
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266 | |
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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 | |
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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))) |
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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) |