| 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 | |
| 18 | ;; $Id: pixbuf.lisp,v 1.2 2005-02-14 00:46:31 espen Exp $ |
| 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) |
| 29 | (nil gerror :out)) |
| 30 | |
| 31 | (defbinding %pixbuf-new-from-file-at-size () (referenced pixbuf) |
| 32 | (filename pathname) |
| 33 | (width int) |
| 34 | (height int) |
| 35 | (nil gerror :out)) |
| 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) |
| 43 | (nil gerror :out)) |
| 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 | |
| 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))) |
| 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) |
| 75 | (keys strings) |
| 76 | (values string) |
| 77 | (nil gerror :out)) |
| 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)) |
| 91 | (multiple-value-bind (ok-p gerror) |
| 92 | (%pixbuf-savev pixbuf filename type keys values) |
| 93 | (unless ok-p |
| 94 | (signal-gerror gerror))))) |
| 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))) |