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Eli Zaretskii
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2004-05-11 Eli Zaretskii <eliz@gnu.org>
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* iimage.el: New file.
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2004-05-11 Juanma Barranquero <lektu@terra.es>
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* custom.el (custom-initialize-default, defcustom): Typo in docstring.
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133
lisp/iimage.el
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133
lisp/iimage.el
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;;; iimage.el --- Inline image minor mode.
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;; Copyright (C) 2004 Free Software Foundation
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;; Author: KOSEKI Yoshinori <kose@meadowy.org>
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;; Maintainer: KOSEKI Yoshinori <kose@meadowy.org>
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;; Keywords: multimedia
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; Iimage is a minor mode that display a images, when image-filename
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;; exists in buffer.
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;; http://www.netlaputa.ne.jp/~kose/Emacs/iimage.html
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;;
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;; Add to your `~/.emacs':
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;; (autoload 'iimage-mode "iimage" "SUpport Inline image minor mode." t)
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;;
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;; ** Display images in *Info* buffer.
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;;
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;; (add-hook 'info-mode-hook 'turn-on-iimage-mode)
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;;
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;; .texinfo: @file{file://foo.png}
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;; .info: `file://foo.png'
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;;
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;; ** Display images in Wiki buffer.
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;;
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;; (add-hook 'wiki-mode-hook 'turn-on-iimage-mode)
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;;
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;; wiki-file: [[foo.png]]
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;;; Code:
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(eval-when-compile
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(require 'image-file))
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(defconst iimage-version "1.0")
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(defvar iimage-mode nil)
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(defvar iimage-mode-map nil)
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;; Set up key map.
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(unless iimage-mode-map
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(setq iimage-mode-map (make-sparse-keymap))
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(define-key iimage-mode-map "\C-l" 'iimage-recenter))
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(defun iimage-recenter (&optional arg)
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"Re-draw images and recenter."
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(interactive "P")
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(iimage-mode-buffer 0)
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(iimage-mode-buffer 1)
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(recenter arg))
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(defvar iimage-mode-image-filename-regex
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(concat "[-+./_0-9a-zA-Z]+\\."
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(regexp-opt (nconc (mapcar #'upcase
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image-file-name-extensions)
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image-file-name-extensions)
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t)))
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(defvar iimage-mode-image-regex-alist
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`((,(concat "\\(`?file://\\|\\[\\[\\|<\\|`\\)?"
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"\\(" iimage-mode-image-filename-regex "\\)"
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"\\(\\]\\]\\|>\\|'\\)?") . 2))
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"*Alist of filename REGEXP vs NUM.
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Each element looks like (REGEXP . NUM).
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NUM specifies which parenthesized expression in the regexp.
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image filename regex exsamples:
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file://foo.png
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`file://foo.png'
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\\[\\[foo.gif]]
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<foo.png>
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foo.JPG
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")
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(defun turn-on-iimage-mode ()
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"Unconditionally turn on iimage mode."
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(interactive)
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(iimage-mode 1))
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(defun turn-off-iimage-mode ()
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"Unconditionally turn off iimage mode."
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(interactive)
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(iimage-mode 0))
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(defun iimage-mode-buffer (arg)
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"Display/Undisplay Images.
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With numeric ARG, display the images if and only if ARG is positive."
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(interactive)
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(let ((ing (if (numberp arg)
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(> arg 0)
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iimage-mode))
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(modp (buffer-modified-p (current-buffer)))
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file buffer-read-only)
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(save-excursion
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(goto-char (point-min))
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(dolist (pair iimage-mode-image-regex-alist)
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(while (re-search-forward (car pair) nil t)
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(if (and (setq file (match-string (cdr pair)))
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(setq file (expand-file-name file default-directory))
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(file-exists-p file))
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(if ing
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(add-text-properties (match-beginning 0) (match-end 0)
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(list 'display (create-image file)))
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(remove-text-properties (match-beginning 0) (match-end 0)
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'(display)))))))
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(set-buffer-modified-p modp)))
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(define-minor-mode iimage-mode
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"Toggle inline image minor mode."
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nil " iImg" iimage-mode-map
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(run-hooks 'iimage-mode-hook)
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(iimage-mode-buffer iimage-mode))
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(provide 'iimage)
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;;; iimage.el ends here
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