82 lines
2.9 KiB
EmacsLisp
82 lines
2.9 KiB
EmacsLisp
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;;; ring-bell-fns.el --- Collection of functions for ring-bell -*- lexical-binding: t; -*-
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;; Copyright (C) 2025 Free Software Foundation, Inc.
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;; Author: Elijah Gabe Pérez <eg642616@gmail.com>
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;; Keywords: faces
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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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;; Collection of functions intended to be used with `ring-bell-function'.
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;; as alternatives to `visible-bell'
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;;; Code:
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(require 'pulse)
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(defgroup ring-bell nil
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"Customization options for ring bell."
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:version "31.1"
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:group 'emacs)
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(defcustom flash-face-attributes
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'(:background "red" :foreground "white")
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"Face attributes to use in any function from `ring-bell-fns'.
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This is intended to be used in any function from `ring-bell-fns' such as
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`flash-face-bell-function' and `flash-echo-area-bell-function' to make
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the flash face more noticeable."
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:type 'plist
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:version "31.1")
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(defcustom flash-face-faces
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'(mode-line-active)
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"A list of faces to be flashed by `flash-face-bell-function'."
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:type '(repeat face)
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:version "31.1")
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;;;###autoload
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(defun flash-face-bell-function ()
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"Indicate ringing the bell by flashing some faces.
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Intended to be used in `ring-bell-function'."
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(pulse-faces flash-face-faces flash-face-attributes))
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;;;###autoload
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(defun flash-echo-area-bell-function ()
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"Indicate ringing the bell by flashing the echo area.
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Intended to be used in `ring-bell-function'."
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;; pulse-faces uses run-with-timer if `pulse-face-duration'
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;; is long, which makes the flashing in the echo area not visible.
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;; for fix this then apply the flashing to *Echo Area 0*
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;; and minibuffer buffer for the `run-with-timer',
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;; and fallback to minibuffer buffer due performance.
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(if (> pulse-face-duration 0.1)
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(dolist (buf `(,(window-buffer (minibuffer-window))
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;; get or create the echo area for flash it too.
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,(get-buffer-create" *Echo Area 0*")))
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(redisplay)
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(with-current-buffer buf
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(pulse-faces '(default) flash-face-attributes)))
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(with-current-buffer (window-buffer (minibuffer-window))
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;; For make the flash effect take effect in the
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;; minibuffer/echo area, insert a space only if it is empty.
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(if (= (buffer-size) 0)
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(insert ?\s))
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(pulse-faces '(default) flash-face-attributes))))
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(provide 'ring-bell-fns)
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;;; ring-bell-fns.el ends here
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