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1 | ;; Common Lisp bindings for GTK+ v2.0 |
2 | ;; Copyright (C) 2004 Espen S. Johnsen <espen@users.sf.net> |
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 | |
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18 | ;; $Id: pixbuf.lisp,v 1.2 2005-02-14 00:46:31 espen Exp $ |
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19 | |
20 | |
21 | (in-package "GDK") |
22 | |
23 | (defbinding pixbuf-get-option () (copy-of string) |
24 | (pixbuf pixbuf) |
25 | (key string)) |
26 | |
27 | (defbinding %pixbuf-new-from-file () (referenced pixbuf) |
28 | (filename pathname) |
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29 | (nil gerror :out)) |
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30 | |
31 | (defbinding %pixbuf-new-from-file-at-size () (referenced pixbuf) |
32 | (filename pathname) |
33 | (width int) |
34 | (height int) |
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35 | (nil gerror :out)) |
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36 | |
37 | #+gtk2.6 |
38 | (defbinding %pixbuf-new-from-file-at-scale () (referenced pixbuf) |
39 | (filename pathname) |
40 | (width int) |
41 | (height int) |
42 | (preserve-aspect-ratio boolean) |
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43 | (nil gerror :out)) |
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44 | |
45 | (defun pixbuf-load (filename &key width height size (preserve-aspect-ratio t)) |
46 | #-gtk2.6 |
47 | (unless preserve-aspect-ratio |
48 | (warn ":preserve-aspect-ratio not supported with this version of Gtk")) |
49 | |
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50 | (multiple-value-bind (pixbuf gerror) |
51 | (cond |
52 | (size |
53 | #-gtk2.6(%pixbuf-new-from-file-at-size filename size size) |
54 | #+gtk2.6(%pixbuf-new-from-file-at-scale filename size size preserve-aspect-ratio)) |
55 | ((and width height) |
56 | #-gtk2.6(%pixbuf-new-from-file-at-size filename width height) |
57 | #+gtk2.6(%pixbuf-new-from-file-at-scale filename width height preserve-aspect-ratio)) |
58 | ((or width height) |
59 | (error "Both :width and :height must be specified")) |
60 | (t (%pixbuf-new-from-file filename))) |
61 | (if gerror |
62 | (signal-gerror gerror) |
63 | pixbuf))) |
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64 | |
65 | |
66 | ;; (defbinding pixbuf-get-file-info () (copy-of pixbuf-format) |
67 | ;; (filename pathname) |
68 | ;; (width int :out) |
69 | ;; (height int :out)) |
70 | |
71 | (defbinding %pixbuf-savev () boolean |
72 | (pixbuf pixbuf) |
73 | (filename pathname) |
74 | (type string) |
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75 | (keys strings) |
76 | (values string) |
77 | (nil gerror :out)) |
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78 | |
79 | (defun pixbuf-save (pixbuf filename type &rest options) |
80 | (let ((keys (make-array 0 :adjustable t :fill-pointer t)) |
81 | (values (make-array 0 :adjustable t :fill-pointer t))) |
82 | (loop |
83 | as (key value . rest) = options then rest |
84 | do (vector-push-extend (string-downcase key) keys) |
85 | (vector-push-extend |
86 | (etypecase value |
87 | (string value) |
88 | (symbol (string-downcase value)) |
89 | (number (format nil "~A" value))) |
90 | values)) |
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91 | (multiple-value-bind (ok-p gerror) |
92 | (%pixbuf-savev pixbuf filename type keys values) |
93 | (unless ok-p |
94 | (signal-gerror gerror))))) |
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95 | |
96 | (defbinding pixbuf-new-from-xpm-data () (referenced pixbuf) |
97 | (data (vector string))) |
98 | |
99 | (defbinding %pixbuf-new-subpixbuf () pixbuf ;; or (referenced pixbuf)? |
100 | (pixbuf pixbuf) |
101 | (x int) (y int) (width int) (height int)) |
102 | |
103 | (defbinding %pixbuf-copy () (referenced pixbuf) |
104 | (pixbuf pixbuf)) |
105 | |
106 | (defun copy-pixbuf (pixbuf &optional x y width height) |
107 | (if (and (not x) (not y) (not width) (not height)) |
108 | (%pixbuf-copy pixbuf) |
109 | (%pixbuf-new-subpixbuf pixbuf x y width height))) |
110 | |
111 | |
112 | ;;; Utilities |
113 | |
114 | (defbinding pixbuf-add-alpha |
115 | (pixbuf &optional substitute-color (red 255) (green 255) (blue 255)) |
116 | (referenced pixbuf) |
117 | (pixbuf pixbuf) |
118 | (substitute-color boolean) |
119 | (red (unsigned 8)) |
120 | (green (unsigned 8)) |
121 | (blue (unsigned 8))) |