72 lines
2.4 KiB
EmacsLisp
72 lines
2.4 KiB
EmacsLisp
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;;; lsp-ui-util.el --- Utility module for Lsp-Ui -*- lexical-binding: t -*-
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;; Copyright (C) 2020 Shen, Jen-Chieh
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;; Author: Jen-Chieh Shen <jcs090218@gmail.com>
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;; URL: https://github.com/emacs-lsp/lsp-ui
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;; Keywords: languages, tools
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;; Version: 6.2
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;;; License
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;;
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;; This program 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, or (at your option)
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;; any later version.
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;; This program 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 this program; see the file COPYING. If not, write to
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;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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;; Floor, Boston, MA 02110-1301, USA.
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;;; Commentary:
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;;
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;; Utility module for Lsp-Ui.
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;;
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;;; Code:
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(require 'face-remap)
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(defun lsp-ui-util-safe-kill-timer (timer)
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"Safely kill the TIMER."
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(when (timerp timer) (cancel-timer timer)))
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(defun lsp-ui-util-safe-delete-overlay (overlay)
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"Safely delete the OVERLAY."
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(when (overlayp overlay) (delete-overlay overlay)))
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(defun lsp-ui-util-line-number-display-width ()
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"Safe way to get value from function `line-number-display-width'."
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(if (bound-and-true-p display-line-numbers-mode)
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;; For some reason, function `line-number-display-width' gave
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;; us error `args-out-of-range' even we do not pass anything towards
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;; to it function. See the following links,
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;;
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;; - https://github.com/emacs-lsp/lsp-ui/issues/294
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;; - https://github.com/emacs-lsp/lsp-ui/issues/533 (duplicate)
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(+ (or (ignore-errors (line-number-display-width)) 0) 2)
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0))
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(defun lsp-ui-util-line-string (pos)
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"Return string at POS."
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(when (integerp pos) (save-excursion (goto-char pos) (thing-at-point 'line))))
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(defun lsp-ui-util-column (&optional pos)
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"Return column at POS."
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(setq pos (or pos (point)))
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(save-excursion (goto-char pos) (current-column)))
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(defun lsp-ui-util-text-scale-factor ()
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"Return the factor effect by `text-scale-mode'."
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(or (plist-get (cdr text-scale-mode-remapping) :height) 1))
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(provide 'lsp-ui-util)
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;;; lsp-ui-util.el ends here
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