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108 lines
3.5 KiB
EmacsLisp
108 lines
3.5 KiB
EmacsLisp
;;; sb-image --- Image management for speedbar
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;; Copyright (C) 1999-2003, 2005-2019 Free Software Foundation, Inc.
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;; Author: Eric M. Ludlam <zappo@gnu.org>
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;; Keywords: file, tags, tools
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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 3 of the License, or
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;; (at your option) 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. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;; Supporting Image display for Emacs 20 and less, Emacs 21, and XEmacs,
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;; is a challenging task, which doesn't take kindly to being byte compiled.
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;; When sharing speedbar.elc between these three applications, the Image
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;; support can get lost.
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;;
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;; By splitting out that hard part into this file, and avoiding byte
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;; compilation, one copy speedbar can support all these platforms together.
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;;
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;; This file requires the `image' package if it is available.
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(require 'ezimage)
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;;; Code:
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(defcustom speedbar-use-images ezimage-use-images
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"Non-nil if speedbar should display icons."
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:group 'speedbar
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:version "21.1"
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:type 'boolean)
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(defalias 'defimage-speedbar 'defezimage)
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(defvar speedbar-expand-image-button-alist
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'(("<+>" . ezimage-directory-plus)
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("<->" . ezimage-directory-minus)
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("< >" . ezimage-directory)
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("[+]" . ezimage-page-plus)
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("[-]" . ezimage-page-minus)
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("[?]" . ezimage-page)
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("[ ]" . ezimage-page)
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("{+}" . ezimage-box-plus)
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("{-}" . ezimage-box-minus)
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("<M>" . ezimage-mail)
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("<d>" . ezimage-document-tag)
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("<i>" . ezimage-info-tag)
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(" =>" . ezimage-tag)
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(" +>" . ezimage-tag-gt)
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(" ->" . ezimage-tag-v)
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(">" . ezimage-tag)
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("@" . ezimage-tag-type)
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(" @" . ezimage-tag-type)
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("*" . ezimage-checkout)
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("#" . ezimage-object)
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("!" . ezimage-object-out-of-date)
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("//" . ezimage-label)
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("%" . ezimage-lock)
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)
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"List of text and image associations.")
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(defun speedbar-insert-image-button-maybe (start length)
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"Insert an image button based on text starting at START for LENGTH chars.
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If buttontext is unknown, just insert that text.
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If we have an image associated with it, use that image."
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(when speedbar-use-images
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(let ((ezimage-expand-image-button-alist
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speedbar-expand-image-button-alist))
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(ezimage-insert-image-button-maybe start length))))
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(defun speedbar-image-dump ()
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"Dump out the current state of the Speedbar image alist.
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See `speedbar-expand-image-button-alist' for details."
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(interactive)
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(with-output-to-temp-buffer "*Speedbar Images*"
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(with-current-buffer "*Speedbar Images*"
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(goto-char (point-max))
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(insert "Speedbar image cache.\n\n")
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(let ((start (point)) (end nil))
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(insert "Image\tText\tImage Name")
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(setq end (point))
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(insert "\n")
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(put-text-property start end 'face 'underline))
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(let ((ia speedbar-expand-image-button-alist))
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(while ia
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(let ((start (point)))
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(insert (car (car ia)))
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(insert "\t")
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(speedbar-insert-image-button-maybe start
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(length (car (car ia))))
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(insert (car (car ia)) "\t" (format "%s" (cdr (car ia))) "\n"))
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(setq ia (cdr ia)))))))
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(provide 'sb-image)
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;;; sb-image.el ends here
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