rcl/devices.lisp

   1 ;; Copyright (c) 2006-2007 Carlos Ungil
   2
   3 ;; Permission is hereby granted, free of charge, to any person obtaining
   4 ;; a copy of this software and associated documentation files (the
   5 ;; "Software"), to deal in the Software without restriction, including
   6 ;; without limitation the rights to use, copy, modify, merge, publish,
   7 ;; distribute, sublicense, and/or sell copies of the Software, and to
   8 ;; permit persons to whom the Software is furnished to do so, subject to
   9 ;; the following conditions:
  10
  11 ;; The above copyright notice and this permission notice shall be
  12 ;; included in all copies or substantial portions of the Software.
  13
  14 ;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15 ;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  16 ;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17 ;; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  18 ;; LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  19 ;; OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  20 ;; WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21
  22 (in-package :rcl)
  23
  24 (defun device-details (type)
  25   "Returns for known types :ps, :pdf, :png, :jp[e]g, :xfig, :pictex
  26 a pair function,extension"
  27   (values-list (ecase type
  28                  (:ps '("postscript" "ps"))
  29                  (:pdf '("pdf" "pdf"))
  30                  (:png '("png" "png"))
  31                  ((or :jpeg :jpg) '("jpeg" "jpg"))
  32                  (:xfig '("xfig" "fig"))
  33                  (:pictex '("pictex" "tex")))))
  34
  35 (defmacro with-device ((filename type &rest options) &body body)
  36   "Executes the body after opening a graphical device that is closed at the end;
  37 options are passed to R (known types: :ps, :pdf, :png, :jp[e]g, :xfig, :pictex)"
  38   `(multiple-value-bind (device-name device-extension) (device-details ,type)
  39     (r% device-name (concatenate 'string ,filename "." device-extension) ,@options)
  40     (let ((device (r% "dev.cur")))
  41       (unwind-protect
  42            (progn ,@body)
  43         (r% "dev.off" device)))))