Du kan inte välja fler än 25 ämnen
Ämnen måste starta med en bokstav eller siffra, kan innehålla bindestreck ('-') och vara max 35 tecken långa.
66 rader
2.2 KiB
66 rader
2.2 KiB
;;; haskell-svg.el --- SVG Rendering -*- lexical-binding: t -*-
|
|
|
|
;; Copyright (c) 2018 Federico Beffa. All rights reserved.
|
|
|
|
;; This file is free software; you can redistribute it and/or modify
|
|
;; it under the terms of the GNU General Public License as published by
|
|
;; the Free Software Foundation; either version 3, or (at your option)
|
|
;; any later version.
|
|
|
|
;; This file is distributed in the hope that it will be useful,
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;; GNU General Public License for more details.
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
;;; Code:
|
|
|
|
(defcustom haskell-svg-render-images nil
|
|
"Replace SVG image text with actual images."
|
|
:group 'haskell-interactive
|
|
:type 'boolean)
|
|
|
|
(defconst haskell-svg-supported (image-type-available-p 'svg)
|
|
"Defines if SVG images are supported by this instance of Emacs.")
|
|
|
|
|
|
|
|
(defun haskell-svg-render-images-p ()
|
|
"Shall we render SVG images?"
|
|
(and haskell-svg-supported (display-images-p) haskell-svg-render-images))
|
|
|
|
(defun haskell-svg-maybe-render-images (text)
|
|
"Render SVG images if desired and supported, or terurn the
|
|
input unmodified."
|
|
(if (haskell-svg-render-images-p)
|
|
(haskell-svg-render-images text)
|
|
text))
|
|
|
|
(defun haskell-svg-render-images (text)
|
|
"Replace an SVG image text with an actual image."
|
|
(with-temp-buffer
|
|
(insert text)
|
|
(goto-char (point-min))
|
|
(when (re-search-forward
|
|
"\"?<\\?xml\\(.\\|\n\\|\r\\)* PUBLIC \"-//W3C//DTD SVG [0-9]\.[0-9]//EN\\(.\\|\n\\|\r\\)*</svg>\"?"
|
|
nil t)
|
|
(let ((svg-string (match-string 0))
|
|
(begin (match-beginning 0))
|
|
(end (match-end 0)))
|
|
(delete-region begin end)
|
|
(goto-char begin)
|
|
(insert-image (create-image svg-string nil t) "SVG image")))
|
|
(buffer-substring (point-min) (point-max))))
|
|
|
|
(defun haskell-svg-toggle-render-images ()
|
|
"Toggle rendering of SVG images at the REPL output."
|
|
(interactive)
|
|
(setq haskell-svg-render-images (not haskell-svg-render-images)))
|
|
|
|
|
|
|
|
(provide 'haskell-svg)
|
|
|
|
;;; haskell-svg.el ends here
|