mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-04 08:47:11 +00:00
274 lines
9.3 KiB
EmacsLisp
274 lines
9.3 KiB
EmacsLisp
;;; ezimage --- Generalized Image management
|
|
|
|
;; Copyright (C) 1999-2020 Free Software Foundation, Inc.
|
|
|
|
;; Author: Eric M. Ludlam <zappo@gnu.org>
|
|
;; Keywords: file, tags, tools
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs 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 of the License, or
|
|
;; (at your option) any later version.
|
|
|
|
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
|
|
|
|
;;; Commentary:
|
|
;;
|
|
;; A few routines for placing an image over text that will work for any
|
|
;; Emacs implementation without error. When images are not supported, then
|
|
;; they are just not displayed.
|
|
;;
|
|
;; The idea is that gui buffers (trees, buttons, etc) will have text
|
|
;; representations of the GUI elements. These routines will replace the text
|
|
;; with an image when images are available.
|
|
|
|
;;; Code:
|
|
|
|
(require 'image)
|
|
|
|
(defcustom ezimage-use-images (and (display-images-p)
|
|
(image-type-available-p 'xpm))
|
|
"Non-nil means ezimage should display icons."
|
|
:group 'ezimage
|
|
:version "21.1"
|
|
:type 'boolean)
|
|
|
|
;;; Create our own version of defimage
|
|
(defmacro defezimage (variable imagespec docstring)
|
|
"Define VARIABLE as an image if `defimage' is not available.
|
|
IMAGESPEC is the image data, and DOCSTRING is documentation for the image."
|
|
`(progn
|
|
(defimage ,variable ,imagespec ,docstring)
|
|
(put (quote ,variable) 'ezimage t)))
|
|
|
|
(defezimage ezimage-directory
|
|
((:type xpm :file "ezimage/dir.xpm" :ascent center))
|
|
"Image used for empty directories.")
|
|
|
|
(defezimage ezimage-directory-plus
|
|
((:type xpm :file "ezimage/dir-plus.xpm" :ascent center))
|
|
"Image used for closed directories with stuff in them.")
|
|
|
|
(defezimage ezimage-directory-minus
|
|
((:type xpm :file "ezimage/dir-minus.xpm" :ascent center))
|
|
"Image used for open directories with stuff in them.")
|
|
|
|
(defezimage ezimage-page-plus
|
|
((:type xpm :file "ezimage/page-plus.xpm" :ascent center))
|
|
"Image used for closed files with stuff in them.")
|
|
|
|
(defezimage ezimage-page-minus
|
|
((:type xpm :file "ezimage/page-minus.xpm" :ascent center))
|
|
"Image used for open files with stuff in them.")
|
|
|
|
(defezimage ezimage-page
|
|
((:type xpm :file "ezimage/page.xpm" :ascent center))
|
|
"Image used for files with nothing interesting in it.")
|
|
|
|
(defezimage ezimage-tag
|
|
((:type xpm :file "ezimage/tag.xpm" :ascent center))
|
|
"Image used for tags.")
|
|
|
|
(defezimage ezimage-tag-plus
|
|
((:type xpm :file "ezimage/tag-plus.xpm" :ascent center))
|
|
"Image used for closed tag groups.")
|
|
|
|
(defezimage ezimage-tag-minus
|
|
((:type xpm :file "ezimage/tag-minus.xpm" :ascent center))
|
|
"Image used for open tags.")
|
|
|
|
(defezimage ezimage-tag-gt
|
|
((:type xpm :file "ezimage/tag-gt.xpm" :ascent center))
|
|
"Image used for closed tags (with twist arrow).")
|
|
|
|
(defezimage ezimage-tag-v
|
|
((:type xpm :file "ezimage/tag-v.xpm" :ascent center))
|
|
"Image used for open tags (with twist arrow).")
|
|
|
|
(defezimage ezimage-tag-type
|
|
((:type xpm :file "ezimage/tag-type.xpm" :ascent center))
|
|
"Image used for tags that represent a data type.")
|
|
|
|
(defezimage ezimage-box-plus
|
|
((:type xpm :file "ezimage/box-plus.xpm" :ascent center))
|
|
"Image of a closed box.")
|
|
|
|
(defezimage ezimage-box-minus
|
|
((:type xpm :file "ezimage/box-minus.xpm" :ascent center))
|
|
"Image of an open box.")
|
|
|
|
(defezimage ezimage-mail
|
|
((:type xpm :file "ezimage/mail.xpm" :ascent center))
|
|
"Image of an envelope.")
|
|
|
|
(defezimage ezimage-checkout
|
|
((:type xpm :file "ezimage/checkmark.xpm" :ascent center))
|
|
"Image representing a checkmark. For files checked out of a VC.")
|
|
|
|
(defezimage ezimage-object
|
|
((:type xpm :file "ezimage/bits.xpm" :ascent center))
|
|
"Image representing bits (an object file.)")
|
|
|
|
(defezimage ezimage-object-out-of-date
|
|
((:type xpm :file "ezimage/bitsbang.xpm" :ascent center))
|
|
"Image representing bits with a ! in it. (An out of data object file.)")
|
|
|
|
(defezimage ezimage-label
|
|
((:type xpm :file "ezimage/label.xpm" :ascent center))
|
|
"Image used for label prefix.")
|
|
|
|
(defezimage ezimage-lock
|
|
((:type xpm :file "ezimage/lock.xpm" :ascent center))
|
|
"Image of a lock. Used for Read Only, or private.")
|
|
|
|
(defezimage ezimage-unlock
|
|
((:type xpm :file "ezimage/unlock.xpm" :ascent center))
|
|
"Image of an unlocked lock.")
|
|
|
|
(defezimage ezimage-key
|
|
((:type xpm :file "ezimage/key.xpm" :ascent center))
|
|
"Image of a key.")
|
|
|
|
(defezimage ezimage-document-tag
|
|
((:type xpm :file "ezimage/doc.xpm" :ascent center))
|
|
"Image used to indicate documentation available.")
|
|
|
|
(defezimage ezimage-document-plus
|
|
((:type xpm :file "ezimage/doc-plus.xpm" :ascent center))
|
|
"Image used to indicate closed documentation.")
|
|
|
|
(defezimage ezimage-document-minus
|
|
((:type xpm :file "ezimage/doc-minus.xpm" :ascent center))
|
|
"Image used to indicate open documentation.")
|
|
|
|
(defezimage ezimage-info-tag
|
|
((:type xpm :file "ezimage/info.xpm" :ascent center))
|
|
"Image used to indicate more information available.")
|
|
|
|
(defvar ezimage-expand-image-button-alist
|
|
'(
|
|
;; here are some standard representations
|
|
("<+>" . ezimage-directory-plus)
|
|
("<->" . ezimage-directory-minus)
|
|
("< >" . ezimage-directory)
|
|
("[+]" . ezimage-page-plus)
|
|
("[-]" . ezimage-page-minus)
|
|
("[?]" . ezimage-page)
|
|
("[ ]" . ezimage-page)
|
|
("{+}" . ezimage-box-plus)
|
|
("{-}" . ezimage-box-minus)
|
|
;; Some vaguely representative entries
|
|
("*" . ezimage-checkout)
|
|
("#" . ezimage-object)
|
|
("!" . ezimage-object-out-of-date)
|
|
("%" . ezimage-lock)
|
|
)
|
|
"List of text and image associations.")
|
|
|
|
(defun ezimage-insert-image-button-maybe (start length &optional string)
|
|
"Insert an image button based on text starting at START for LENGTH chars.
|
|
If buttontext is unknown, just insert that text.
|
|
If we have an image associated with it, use that image.
|
|
Optional argument STRING is a string upon which to add text properties."
|
|
(when ezimage-use-images
|
|
(let* ((bt (buffer-substring start (+ length start)))
|
|
(a (assoc bt ezimage-expand-image-button-alist)))
|
|
;; Regular images (created with `insert-image' are intangible
|
|
;; which (I suppose) make them more compatible with XEmacs 21.
|
|
;; Unfortunately, there is a giant pile of code dependent on the
|
|
;; underlying text. This means if we leave it tangible, then I
|
|
;; don't have to change said giant piles of code.
|
|
(if (and a (symbol-value (cdr a)))
|
|
(ezimage-insert-over-text (symbol-value (cdr a))
|
|
start
|
|
(+ start (length bt))))))
|
|
string)
|
|
|
|
(defun ezimage-image-over-string (string &optional alist)
|
|
"Insert over the text in STRING an image found in ALIST.
|
|
Return STRING with properties applied."
|
|
(if ezimage-use-images
|
|
(let ((a (assoc string alist)))
|
|
(if (and a (symbol-value (cdr a)))
|
|
(ezimage-insert-over-text (symbol-value (cdr a))
|
|
0 (length string)
|
|
string)
|
|
string))
|
|
string))
|
|
|
|
(defun ezimage-insert-over-text (image start end &optional string)
|
|
"Place IMAGE over the text between START and END.
|
|
Assumes the image is part of a GUI and can be clicked on.
|
|
Optional argument STRING is a string upon which to add text properties."
|
|
(when ezimage-use-images
|
|
(add-text-properties start end
|
|
(list 'display image
|
|
'rear-nonsticky (list 'display))
|
|
string))
|
|
string)
|
|
|
|
(defun ezimage-image-association-dump ()
|
|
"Dump out the current state of the Ezimage image alist.
|
|
See `ezimage-expand-image-button-alist' for details."
|
|
(interactive)
|
|
(with-output-to-temp-buffer "*Ezimage Images*"
|
|
(with-current-buffer "*Ezimage Images*"
|
|
(goto-char (point-max))
|
|
(insert "Ezimage image cache.\n\n")
|
|
(let ((start (point)) (end nil))
|
|
(insert "Image\tText\tImage Name")
|
|
(setq end (point))
|
|
(insert "\n")
|
|
(put-text-property start end 'face 'underline))
|
|
(let ((ia ezimage-expand-image-button-alist))
|
|
(while ia
|
|
(let ((start (point)))
|
|
(insert (car (car ia)))
|
|
(insert "\t")
|
|
(ezimage-insert-image-button-maybe start
|
|
(length (car (car ia))))
|
|
(insert (car (car ia)) "\t" (format "%s" (cdr (car ia))) "\n"))
|
|
(setq ia (cdr ia)))))))
|
|
|
|
(defun ezimage-image-dump ()
|
|
"Dump out the current state of the Ezimage image alist.
|
|
See `ezimage-expand-image-button-alist' for details."
|
|
(interactive)
|
|
(with-output-to-temp-buffer "*Ezimage Images*"
|
|
(with-current-buffer "*Ezimage Images*"
|
|
(goto-char (point-max))
|
|
(insert "Ezimage image cache.\n\n")
|
|
(let ((start (point)) (end nil))
|
|
(insert "Image\tImage Name")
|
|
(setq end (point))
|
|
(insert "\n")
|
|
(put-text-property start end 'face 'underline))
|
|
(let ((ia (ezimage-all-images)))
|
|
(while ia
|
|
(let ((start (point)))
|
|
(insert "cm")
|
|
(ezimage-insert-over-text (symbol-value (car ia)) start (point))
|
|
(insert "\t" (format "%s" (car ia)) "\n"))
|
|
(setq ia (cdr ia)))))))
|
|
|
|
(defun ezimage-all-images ()
|
|
"Return a list of all variables containing ez images."
|
|
(let ((ans nil))
|
|
(mapatoms (lambda (sym)
|
|
(if (get sym 'ezimage) (setq ans (cons sym ans)))))
|
|
(setq ans (sort ans (lambda (a b)
|
|
(string< (symbol-name a) (symbol-name b)))))
|
|
ans))
|
|
|
|
(provide 'ezimage)
|
|
|
|
;;; ezimage.el ends here
|